National Library of Energy BETA

Sample records for light trucks model

  1. Cummins Next Generation Tier 2, Bin 2 Light Truck Diesel engine...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Next Generation Tier 2, Bin 2 Light Truck Diesel engine Cummins Next Generation Tier 2, Bin 2 Light Truck Diesel engine Discusses plan, baselining, and modeling, for new light ...

  2. Diesel Engine Light Truck Application

    SciTech Connect (OSTI)

    2007-12-31

    The Diesel Engine Light Truck Application (DELTA) program consists of two major contracts with the Department of Energy (DOE). The first one under DE-FC05-97-OR22606, starting from 1997, was completed in 2001, and consequently, a final report was submitted to DOE in 2003. The second part of the contract was under DE-FC05-02OR22909, covering the program progress from 2002 to 2007. This report is the final report of the second part of the program under contract DE-FC05-02OR22909. During the course of this contract, the program work scope and objectives were significantly changed. From 2002 to 2004, the DELTA program continued working on light-duty engine development with the 4.0L V6 DELTA engine, following the accomplishments made from the first part of the program under DE-FC05-97-OR22606. The program work scope in 2005-2007 was changed to the Diesel Particulate Filter (DPF) soot layer characterization and substrate material assessment. This final report will cover two major technical tasks. (1) Continuation of the DELTA engine development to demonstrate production-viable diesel engine technologies and to demonstrate emissions compliance with significant fuel economy advantages, covering progress made from 2002 to 2004. (2) DPF soot layer characterization and substrate material assessment from 2005-2007.

  3. Cummins Light Truck Clean Diesel | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Light Truck Clean Diesel Cummins Light Truck Clean Diesel 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation 2004_deer_stang2.pdf (257.78 KB) More Documents & Publications Cummins/DOE Light Truck Clean Diesel Engine Progress Report Cummins Work Toward Successful Introduction of Light-Duty Clean Diesel Engines in US Cummins/DOE Light Truck Diesel Engine Progress Report

  4. Progress in Thermoelectrical Energy Recovery from a Light Truck...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    of an Exhaust Thermoelectric Generator of a GM Sierra Pickup Truck Thermoelectrical Energy Recovery From the Exhaust of a Light Truck Automotive Thermoelectric Generators and HVAC

  5. Caterpillar Light Truck Clean Diesel Program

    SciTech Connect (OSTI)

    Robert L. Miller; Kevin P. Duffy; Michael A. Flinn; Steve A. Faulkner; Mike A. Graham

    1999-04-26

    In 1998, light trucks accounted for over 48% of new vehicle sales in the U.S. and well over half the new Light Duty vehicle fuel consumption. The Light Truck Clean Diesel (LTCD) program seeks to introduce large numbers of advanced technology diesel engines in light-duty trucks that would improve their fuel economy (mpg) by at least 50% and reduce our nation's dependence on foreign oil. Incorporating diesel engines in this application represents a high-risk technical and economic challenge. To meet the challenge, a government-industry partnership (Department of Energy, diesel engine manufacturers, and the automotive original equipment manufacturers) is applying joint resources to meet specific goals that will provide benefits to the nation. [1] Caterpillar initially teamed with Ford Motor Company on a 5 year program (1997-2002) to develop prototype vehicles that demonstrate a 50% fuel economy improvement over the current 1997 gasoline powered light truck vehicle in this class while complying with EPA's Tier II emissions regulations. The light truck vehicle selected for the demonstration is a 1999 Ford F150 SuperCab. To meet the goals of the program, the 4.6 L V-8 gasoline engine in this vehicle will be replaced by an advanced compression ignition direct injection (CIDI) engine. Key elements of the Caterpillar LTCD program plan to develop the advanced CIDI engine are presented in this paper.

  6. Fact #571: May 18, 2009 Light Truck CAFE Standards - 2006 Reformation |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy 1: May 18, 2009 Light Truck CAFE Standards - 2006 Reformation Fact #571: May 18, 2009 Light Truck CAFE Standards - 2006 Reformation In 2006 the National Highway Traffic Safety Administration (NHTSA) established new requirements for the light truck Corporate Average Fuel Economy (CAFE) standards. In the new rule, there are Unreformed CAFE standards for model years (MY) 2008 through 2010 using the same CAFE calculations as in the past, and there are Reformed CAFE standards

  7. Progress in Thermoelectrical Energy Recovery from a Light Truck Exhaust |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy in Thermoelectrical Energy Recovery from a Light Truck Exhaust Progress in Thermoelectrical Energy Recovery from a Light Truck Exhaust Presentation given at DEER 2006, August 20-24, 2006, Detroit, Michigan. Sponsored by the U.S. DOE's EERE FreedomCar and Fuel Partnership and 21st Century Truck Programs. 2006_deer_thacher.pdf (780.57 KB) More Documents & Publications The Effects of an Exhaust Thermoelectric Generator of a GM Sierra Pickup Truck Thermoelectrical Energy

  8. Cummins Next Generation Tier 2, Bin 2 Light Truck Diesel engine

    Broader source: Energy.gov [DOE]

    Discusses plan, baselining, and modeling, for new light truck 4-cylinder turbocharged diesel meeting Tier 2, Bin 2 emissions and 40 percent better fuel economy than the V-8 gasoline engine it will replace

  9. Proposed Revisions to Light Truck Fuel Economy Standard (released in AEO2006)

    Reports and Publications (EIA)

    2006-01-01

    In August 2005, the National Highway Traffic Safety Administration (NHTSA) published proposed reforms to the structure of CAFE standards for light trucks and increases in light truck Corporate Average Fuel Economy (CAFE) standards for model years 2008 through 201. Under the proposed new structure, NHTSA would establish minimum fuel economy levels for six size categories defined by the vehicle footprint (wheelbase multiplied by track width), as summarized in Table 3. For model years 2008 through 2010, the new CAFE standards would provide manufacturers the option of complying with either the standards defined for each individual footprint category or a proposed average light truck fleet standard of 22.5 miles per gallon in 2008, 23.1 miles per gallon in 2009, and 23.5 miles per gallon in 2010. All light truck manufacturers would be required to meet an overall standard based on sales within each individual footprint category after model year 2010.

  10. Ten Years of Development Experience with Advanced Light Truck Diesel

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Engines | Department of Energy Ten Years of Development Experience with Advanced Light Truck Diesel Engines Ten Years of Development Experience with Advanced Light Truck Diesel Engines 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Cummins Engines 2004_deer_stang1.pdf (49.18 KB) More Documents & Publications The California Demonstration Program for Control of PM from Diesel Backup Generators = Demonstrated Petroleum Reduction Using Oil Bypass Filter Technology on

  11. DOE Light Truck Clean Diesel (LTCD) Program Final Caterpillar Public Report Light Truck Clean Diesel Program

    SciTech Connect (OSTI)

    Eric Fluga

    2004-09-30

    The US Department of Energy and Caterpillar entered a Cooperative Agreement to develop compression ignition engine technology suitable for the light truck/SUV market. Caterpillar, in collaboration with a suitable commercialization partner, developed a new Compression Ignition Direct Injection (CIDI) engine technology to dramatically improve the emissions and performance of light truck engines. The overall program objective was to demonstrate engine prototypes by 2004, with an order of magnitude emission reduction while meeting challenging fuel consumption goals. Program emphasis was placed on developing and incorporating cutting edge technologies that could remove the current impediments to commercialization of CIDI power sources in light truck applications. The major obstacle to commercialization is emissions regulations with secondary concerns of driveability and NVH (noise, vibration and harshness). The target emissions levels were 0.05 g/mile NOx and 0.01 g/mile PM to be compliant with the EPA Tier 2 fleet average requirements of 0.07 g/mile and the CARB LEV 2 of 0.05 g/mile for NOx, both have a PM requirement of 0.01 g/mile. The program team developed a combustion process that fundamentally shifted the classic NOx vs. PM behavior of CIDI engines. The NOx vs. PM shift was accomplished with a form of Homogeneous Charge Compression Ignition (HCCI). The HCCI concept centers on appropriate mixing of air and fuel in the compression process and controlling the inception and rate of combustion through various means such as variable valve timing, inlet charge temperature and pressure control. Caterpillar has adapted an existing Caterpillar design of a single injector that: (1) creates the appropriate fuel and air mixture for HCCI, (2) is capable of a more conventional injection to overcome the low power density problems of current HCCI implementations, (3) provides a mixed mode where both the HCCI and conventional combustion are functioning in the same combustion cycle

  12. Design and Development of e-Turbo for SUV and Light Truck Applications...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Development of e-Turbo for SUV and Light Truck Applications Design and Development of ... More Documents & Publications Design & Development of e-TurboTM for SUV and Light Truck ...

  13. Design & Development of e-TurboTM for SUV and Light Truck Applications...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Design & Development of e-TurboTM for SUV and Light Truck Applications 2003 DEER ... More Documents & Publications Design and Development of e-Turbo for SUV and Light Truck ...

  14. Fact #720: March 26, 2012 Eleven Percent of New Light Trucks...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    0: March 26, 2012 Eleven Percent of New Light Trucks Sold have Gasoline Direct Injection Fact 720: March 26, 2012 Eleven Percent of New Light Trucks Sold have Gasoline Direct Injection ...

  15. Cummins/DOE Light Truck Diesel Engine Progress Report | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Energy Diesel Engine Progress Report Cummins/DOE Light Truck Diesel Engine Progress Report 2002 DEER Conference Presentation: Cummins 2002_deer_stang.pdf (2.47 MB) More Documents & Publications Cummins/DOE Light Truck Clean Diesel Engine Progress Report Cummins' Next Generation Tier 2, Bin 2 Light Truck Diesel Engine Thermodynamic Systems for Tier 2 Bin 2 Diesel Engines

  16. Cummins/DOE Light Truck Clean Diesel Engine Progress Report | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Energy Clean Diesel Engine Progress Report Cummins/DOE Light Truck Clean Diesel Engine Progress Report 2003 DEER Conference Presentation: Cummins Inc. 2003_deer_stang.pdf (168.78 KB) More Documents & Publications Cummins Light Truck Clean Diesel Cummins/DOE Light Truck Diesel Engine Progress Report Cummins Work Toward Successful Introduction of Light-Duty Clean Diesel Engines in US

  17. Fact #553: January 12, 2009 Market Share of New Cars vs. Light Trucks |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy 3: January 12, 2009 Market Share of New Cars vs. Light Trucks Fact #553: January 12, 2009 Market Share of New Cars vs. Light Trucks The market share of new light trucks climbed steadily through the 1980's and most of the 1990's, much of it due to the rising popularity of the minivan and the sport utility vehicle. In 2004, light trucks outsold cars. In recent years, however, consumers have shifted purchasing preferences back toward cars. Market Share of Cars and Light

  18. Design & Development of e-TurboTM for SUV and Light Truck Applications |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy & Development of e-TurboTM for SUV and Light Truck Applications Design & Development of e-TurboTM for SUV and Light Truck Applications 2003 DEER Conference Presentation: Garrett Engine Boosting Systems 2003_deer_shahed.pdf (477.34 KB) More Documents & Publications Design and Development of e-Turbo for SUV and Light Truck Applications The Potential of Elelcltric Exhaust Gas Turbocharging for HD DIesel Engines SuperTurbocharger

  19. Design and Development of e-Turbo for SUV and Light Truck Applications |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy Development of e-Turbo for SUV and Light Truck Applications Design and Development of e-Turbo for SUV and Light Truck Applications 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Honeywell Corporation 2004_deer_shahed.pdf (427.61 KB) More Documents & Publications Design & Development of e-TurboTM for SUV and Light Truck Applications SuperTurbocharger Electric Turbo Compounding...A Technology Who's Time Has Come

  20. Fact #611: February 22, 2010 Top Ten Best Selling Cars and Light Trucks |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy 1: February 22, 2010 Top Ten Best Selling Cars and Light Trucks Fact #611: February 22, 2010 Top Ten Best Selling Cars and Light Trucks The top ten lists of best selling cars and light trucks in 2009 show that the Toyota Camry was the best selling car, while the Ford F-Series pickup was the best selling light truck. The F-Series outsold the Camry by about 50,000 units. The hybrid Toyota Prius was the tenth bestselling car in 2009. Top Ten Best Selling Cars, 2009 Graph

  1. Cummins' Next Generation Tier 2, Bin 2 Light Truck Diesel Engine...

    Broader source: Energy.gov (indexed) [DOE]

    Development of a new light truck, in-line 4-cylinder turbocharged diesel engine that will ... Passive Catalytic Approach to Low Temperature NOx Emission Abatement Cummins Next ...

  2. Urea SCR Durability Assessment for Tier 2 Light-Duty Truck

    Broader source: Energy.gov [DOE]

    Summarizes progress toward development of a durable urea SCR system to meet Tier 2 Bin 5 on 3780 lb light truck

  3. Fact #757: December 10, 2012 The U.S. Manufactures More Light Trucks than Cars

    Broader source: Energy.gov [DOE]

    Most of the 16 States that manufacture light vehicles dedicated at least two-thirds of total production to light trucks in 2011. Kansas, Mississippi, and Tennessee are the only States that produced...

  4. Fact #647: November 1, 2010 Sales Shifting from Light Trucks to Cars |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy 7: November 1, 2010 Sales Shifting from Light Trucks to Cars Fact #647: November 1, 2010 Sales Shifting from Light Trucks to Cars From 2005 to 2009 light vehicle sales have gradually shifted toward cars over light trucks. The graph below shows this trend broken down by the major manufacturers. This trend is more evident among the major import brands than the domestic brands. Share of Car Sales by Selected Manufacturer Graph showing share of car sales from 2005 to 2009

  5. Cummins' Next Generation Tier 2, Bin 2 Light Truck Diesel Engine

    Broader source: Energy.gov [DOE]

    Development of a new light truck, in-line 4-cylinder turbocharged diesel engine that will meet Tier 2, Bin 2 emissions and at least a 40% fuel economy benefit over the V-8 gasoline engine it could replace

  6. Urea SCR and DPF System for Tier 2 Diesel Light-Duty Trucks | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Energy Tier 2 Diesel Light-Duty Trucks Urea SCR and DPF System for Tier 2 Diesel Light-Duty Trucks Presentation given at DEER 2006, August 20-24, 2006, Detroit, Michigan. Sponsored by the U.S. DOE's EERE FreedomCar and Fuel Partnership and 21st Century Truck Programs. 2006_deer_lambert.pdf (460.97 KB) More Documents & Publications Urea SCR and DPF System for Diesel Sport Utility Vehicle Meeting Tier II Bin 5 Urea SCR and DPF System for Diesel Sport Utility Vehicle Meeting Tier II Bin 5

  7. Fuel Economy Standards for New Light Trucks (released in AEO2007)

    Reports and Publications (EIA)

    2007-01-01

    In March 2006, the National Highway Traffic Safety Administration (NHTSA) finalized Corporate Average Fuel Economy (CAFE) standards requiring higher fuel economy performance for light-duty trucks in model year (MY) 2008 through 2011. Unlike the proposed CAFE standards discussed in Annual Energy Outlook 2006, which would have established minimum fuel economy requirements by six footprint size classes, the final reformed CAFE standards specify a continuous mathematical function that determines minimum fuel economy requirements by vehicle footprint, defined as the wheelbase (the distance from the front axle to the center of the rear axle) times the average track width (the distance between the center lines of the tires) of the vehicle in square feet.

  8. Electric Boosting System for Light Truck/SUV Application

    SciTech Connect (OSTI)

    Steve Arnold, Craig Balis, Pierre Barthelet, Etienne Poix, Tariq Samad, Greg Hampson, S.M. Shahed

    2005-06-22

    Turbo diesel engine use in passenger cars in Europe has resulted in 30-50% improvement in fuel economy. Diesel engine application is particularly suitable for US because of vehicle size and duty cycle patterns. Adopting this technology for use in the US presents two issues--emissions and driveability. Emissions reduction technology is being well addressed with advanced turbocharging, fuel injection and catalytic aftertreatment systems. One way to address driveability is to eliminate turbo lag and increase low speed torque. Electrically assisted turbocharging concepts incorporated in e-TurboTM designs do both. The purpose of this project is to design and develop an electrically assisted turbocharger, e-TurboTM, for diesel engine use in the US. In this report, early design and development of electrical assist technology is described together with issues and potential benefits. In this early phase a mathematical model was developed and verified. The model was used in a sensitivity study. The results of the sensitivity study together with the design and test of first generation hardware was fed into second generation designs. In order to fully realize the benefits of electrical assist technology it was necessary to expand the scope of work to include technology on the compressor side as well as electronic controls concepts. The results of the expanded scope of work are also reported here. In the first instance, designs and hardware were developed for a small engine to quantify and demonstrate benefits. The turbo size was such that it could be applied in a bi-turbo configuration to an SUV sized V engine. Mathematical simulation was used to quantify the possible benefits in an SUV application. It is shown that low speed torque can be increased to get the high performance expected in US, automatic transmission vehicles. It is also shown that e-TurboTM can be used to generate modest amounts of electrical power and supplement the alternator under most load-speed conditions

  9. Selection of Light Duty Truck Engine Air Systems Using Virtual Lab Tests

    SciTech Connect (OSTI)

    Zhang, Houshun

    2000-08-20

    An integrated development approach using seasoned engine technology methodologies, virtual lab parametric investigations, and selected hardware verification tests reflects today's state-of-the-art R&D trends. This presentation will outline such a strategy. The use of this ''Wired'' approach results in substantial reduction in the development cycle time and hardware iterations. An example showing the virtual lab application for a viable design of the air-exhaust-turbocharger system of a light duty truck engine for personal transportation will be presented.

  10. Fact #923: May 2, 2016 Cylinder Deactivation was Used in More than a Quarter of New Light Trucks Produced in 2015- Dataset

    Broader source: Energy.gov [DOE]

    Excel file and dataset for Cylinder Deactivation was Used in More than a Quarter of New Light Trucks Produced in 2015

  11. DESIGN & DEVELOPMENT OF E-TURBO FOR SUV AND LIGHT TRUCK APPLICATIONS

    SciTech Connect (OSTI)

    Balis, C; Middlemass, C; Shahed, SM

    2003-08-24

    The purpose of the project is to develop an electronically controlled, electrically assisted turbocharging system, e-Turbo, for application to SUV and light truck class of passenger vehicles. Earlier simulation work had shown the benefits of e-Turbo system on increasing low-end torque and improving fuel economy. This paper will present further data from the literature to show that advanced turbocharging can enable diesel engine downsizing of 10-30% with 6-17% improvement in fuel economy. This is in addition to the fuel economy benefit that a turbocharged diesel engine offers over conventional gasoline engines. E-Turbo is necessary to get acceptable driving characteristics with downsized diesel engines. As a first step towards the development of this technology for SUV/light truck sized diesel engines (4-6 litre displacement), design concepts and hardware were evaluated for a smaller engine (2 litre displacement). It was felt that design and developments issues could be minimized, the concept proven progressively on the bench, on a small engine and then applied to a large Vee engine (one on each bank). After successful demonstration of the concept, large turbomachinery could be designed and built specifically for larger SUV sized diesel engines. This paper presents the results of development of e-Turbo for a 2 litre diesel engine. A detailed comparison of several electric assist technologies including permanent magnet, six-phase induction and conventional induction motor/generator technology was done. A comparison of switched reluctance motor technology was also done although detailed design was not carried out.

  12. The Detroit Diesel DELTA Engine for Light Trucks and SUVs - Year 2000 Update

    SciTech Connect (OSTI)

    Nabil S. Hakim; Charles E. Freese; Stanley P. Miller

    2000-06-19

    Detroit Diesel Corporation (DDC) is developing the DELTA 4.0L V6 engine, specifically for the North American light truck market. This market poses unique requirements for a diesel engine, necessitating a clean sheet engine design. DELTA was developed from a clean sheet of paper, with the first engine firing just 228 days later. The process began with a Quality Function Deployment (QFD) analysis, which prioritized the development criteria. The development process integrated a co-located, fully cross-functional team. Suppliers were fully integrated and maintained on-site representation. The first demonstration vehicle moved under its own power 12 weeks after the first engine fired. It was demonstrated to the automotive press 18 days later. DELTA has repeatedly demonstrated its ability to disprove historical North American diesel perceptions and compete directly with gasoline engines. This paper outlines the Generation 0.0 development process and briefly defines the engine. A brief indication of the Generation 0.5 development status is given.

  13. DELTA-DIESEL ENGINE LIGHT TRUCK APPLICATION Contract DE-FC05-97OR22606 Final Report

    SciTech Connect (OSTI)

    Hakim, Nabil Balnaves, Mike

    2003-05-27

    DELTA Diesel Engine Light Truck Application End of Contract Report DE-FC05-97-OR22606 EXECUTIVE SUMMARY This report is the final technical report of the Diesel Engine Light Truck Application (DELTA) program under contract DE-FC05-97-OR22606. During the course of this contract, Detroit Diesel Corporation analyzed, designed, tooled, developed and applied the ''Proof of Concept'' (Generation 0) 4.0L V-6 DELTA engine and designed the successor ''Production Technology Demonstration'' (Generation 1) 4.0L V-6 DELTA engine. The objectives of DELTA Program contract DE-FC05-97-OR22606 were to: Demonstrate production-viable diesel engine technologies, specifically intended for the North American LDT and SUV markets; Demonstrate emissions compliance with significant fuel economy advantages. With a clean sheet design, DDC produced the DELTA engine concept promising the following attributes: 30-50% improved fuel economy; Low cost; Good durability and reliability; Acceptable noise, vibration and harshness (NVH); State-of-the-art features; Even firing, 4 valves per cylinder; High pressure common rail fuel system; Electronically controlled; Turbocharged, intercooled, cooled EGR; Extremely low emissions via CLEAN Combustion{copyright} technology. To demonstrate the engine technology in the SUV market, DDC repowered a 1999 Dodge Durango with the DELTA Generation 0 engine. Fuel economy improvements were approximately 50% better than the gasoline engine replaced in the vehicle.

  14. Light-duty vehicle mpg and market shares report, model year 1988

    SciTech Connect (OSTI)

    Hu, P.S.; Williams, L.S.; Beal, D.J.

    1989-04-01

    This issue of Light-Duty Vehicle MPG and Market Shares Report: Model Year 1988 reports the estimated sales-weighted fuel economies, sales, market shares, and other vehicle characteristics of automobiles and light trucks. The estimates are made on a make and model basis, from model year 1976 to model year 1988. Vehicle sales data are used as weighting factors in the sales-weighted estimation procedure. Thus, the estimates represent averages of the overall new vehicle fleet, reflecting the composition of the fleet. Highlights are provided on the trends in the vehicle characteristics from one model year to the next. Analyses are also made on the fuel economy changes to determine the factors which caused the changes. The sales-weighted fuel economy for the new car fleet in model year 1988 showed an improvement of 0.1 mpg from model year 1987, while light trucks showed a 0.2 mpg loss. The 0.2 mpg loss by the light trucks can be attributed to the fact that every light truck size class experienced either losses or no change in their fuel economies from the previous model year, except for the large van size class. Overall, the sales-weighted fuel economy of the entire light-duty vehicle fleet (automobiles and light trucks combined) has remained relatively stable since model year 1986. Domestic light-duty vehicles began to gain popularity over their import counterparts; and light trucks increased their market shares relative to automobiles. Domestic cars regained 0.3% of the automobile market, reversing the previous trend. Similar to the automobile market, domestic light trucks continued to gain popularity over their import counterparts, partly due to the increasing popularity of domestic small vans. 3 refs., 35 figs., 48 tabs.

  15. Development of Technologies for a High Efficiency, Very Low Emission, Diesel Engine for Light Trucks and Sport Utility Vehicles

    SciTech Connect (OSTI)

    Stang, John H.

    1997-12-01

    Cummins Inc., in partnership with the Department of Energy, has developed technology for a new highly efficient, very low emission, diesel engine for light trucks and sport utility vehicles. This work began in April 1997, and started with very aggressive goals for vehicles in the 5751 to 8500 pound GCW weight class. The primary program goals were as follows: (1) EMISSIONS NOx = 0.50 g/mi PM = 0.05 g/mi CO = 2.8 g/mi NMHC = 0.07 g/mi California decided to issue new and even tougher LEV II light truck regulations late in 1999. EPA also issued its lower Tier 2 regulations late in 2000. The net result was that the targets for this diesel engine project were lowered, and these goals were eventually modified by the publication of Federal Tier 2 emission standards early in 2000 to the following: NOx = 0.07 g/mi PM = 0.01 g/mi (2) FUEL ECONOMY The fuel economy goal was 50 percent MPG improvement (combined city/highway) over the 1997 gasoline powered light truck or sport utility vehicle in the vehicle class for which this diesel engine is being designed to replace. The goal for fuel economy remained at 50 percent MPG improvement, even with the emissions goal revisions. (3) COOPERATIVE DEVELOPMENT Regular design reviews of the engine program will be conducted with a vehicle manufacturer to insure that the concepts and design specifics are commercially feasible. (DaimlerChrysler has provided Cummins with this design review input.) Cummins has essentially completed a demonstration of proof-of-principle for a diesel engine platform using advanced combustion and fuel system technologies. Cummins reported very early progress in this project, evidence that new diesel engine technology had been developed that demonstrated the feasibility of the above emissions goals. Emissions levels of NOx = 0.4 g/mi and PM = 0.06 g/mi were demonstrated for a 5250 lb. test weight vehicle with passive aftertreatment only. These results were achieved using the full chassis dynamometer FTP-75 test

  16. Development of Technologies for a High Efficiency, Very Low Emission, Diesel Engine for Light Trucks and Sport Utility Vehicles

    SciTech Connect (OSTI)

    Stang, John H.

    2005-12-19

    Cummins Inc., in partnership with the Department of Energy, has developed technology for a new highly efficient, very low emission, diesel engine for light trucks and sport utility vehicles. This work began in April 1997, and started with very aggressive goals for vehicles in the 5751 to 8500 pound GCW weight class. The primary program goals were as follows: (1) EMISSIONS -- NOx = 0.50 g/mi; PM = 0.05 g/mi; CO = 2.8 g/mi; and NMHC = 0.07 g/mi. California decided to issue new and even tougher LEV II light truck regulations late in 1999. EPA also issued its lower Tier 2 regulations late in 2000. The net result was that the targets for this diesel engine project were lowered, and these goals were eventually modified by the publication of Federal Tier 2 emission standards early in 2000 to the following: NOx = 0.07 g/mi; and PM = 0.01 g/mi. (2) FUEL ECONOMY -- The fuel economy goal was 50 percent MPG improvement (combined city/highway) over the 1997 gasoline powered light truck or sport utility vehicle in the vehicle class for which this diesel engine is being designed to replace. The goal for fuel economy remained at 50 percent MPG improvement, even with the emissions goal revisions. (3) COOPERATIVE DEVELOPMENT -- Regular design reviews of the engine program will be conducted with a vehicle manufacturer to insure that the concepts and design specifics are commercially feasible. (DaimlerChrysler has provided Cummins with this design review input.) Cummins has essentially completed a demonstration of proof-of-principle for a diesel engine platform using advanced combustion and fuel system technologies. Cummins reported very early progress in this project, evidence that new diesel engine technology had been developed that demonstrated the feasibility of the above emissions goals. Emissions levels of NOx = 0.4 g/mi and PM = 0.06 g/mi were demonstrated for a 5250 lb. test weight vehicle with passive aftertreatment only. These results were achieved using the full chassis

  17. Development of Technologies for a High Efficiency, Very Low Emission, Diesel Engine for Light Trucks and Sport Utility Vehicles

    SciTech Connect (OSTI)

    John H. Stang

    2005-12-31

    Cummins Inc., in partnership with the Department of Energy, has developed technology for a new highly efficient, very low emission, diesel engine for light trucks and sport utility vehicles. This work began in April 1997, and started with very aggressive goals for vehicles in the 5751 to 8500 pound GCW weight class. The primary program goals were as follows: (1) EMISSIONS--NO{sub x} = 0.50 g/mi; PM = 0.05 g/mi; CO = 2.8 g/mi; and NMHC = 0.07 g/mi. California decided to issue new and even tougher LEV II light truck regulations late in 1999. EPA also issued its lower Tier 2 regulations late in 2000. The net result was that the targets for this diesel engine project were lowered, and these goals were eventually modified by the publication of Federal Tier 2 emission standards early in 2000 to the following: NO{sub x} = 0.07 g/mi; and PM = 0.01 g/mi. (2) FUEL ECONOMY--The fuel economy goal was 50 percent MPG improvement (combined city/highway) over the 1997 gasoline powered light truck or sport utility vehicle in the vehicle class for which this diesel engine is being designed to replace. The goal for fuel economy remained at 50 percent MPG improvement, even with the emissions goal revisions. (3) COOPERATIVE DEVELOPMENT--Regular design reviews of the engine program will be conducted with a vehicle manufacturer to insure that the concepts and design specifics are commercially feasible. (DaimlerChrysler has provided Cummins with this design review input.) Cummins has essentially completed a demonstration of proof-of-principle for a diesel engine platform using advanced combustion and fuel system technologies. Cummins reported very early progress in this project, evidence that new diesel engine technology had been developed that demonstrated the feasibility of the above emissions goals. Emissions levels of NOx = 0.4 g/mi and PM = 0.06 g/mi were demonstrated for a 5250 lb. test weight vehicle with passive aftertreatment only. These results were achieved using the full

  18. Technologies and policies for controlling greenhouse gas emissions from the U. S. automobile and light truck fleet.

    SciTech Connect (OSTI)

    Plotkin, S.

    1999-01-01

    The message conveyed by the above discussion is that there are no shortages of technologies available to improve the fuel efficiency of the U.S. fleet of autos and light trucks. It clearly is technically feasible to improve greatly the fuel economy of the average new light-duty vehicle. Many of these technologies require tradeoffs, however, that manufacturers are unwilling or (as yet) unable to make in today's market and regulatory environment. These tradeoffs involve higher costs (that might be reduced substantially over time with learning and economies of scale), technical risk and added complexity, emissions concerns (especially for direct injection engines, and especially with respect to diesel engine technology), and customer acceptance issues. Even with current low U.S. oil prices, however, many of these technologies may find their way into the U.S. market, or increase their market share, as a consequence of their penetration of European and Japanese markets with their high gasoline prices. Automotive technology is ''fungible'' that is, it can be easily transported from one market to another. Nevertheless, it probably is unrealistic to expect substantial increases in the average fuel economy of the U.S. light-duty fleet without significant changes in the market. Without such changes, the technologies that do penetrate the U.S. market are more likely to be used to increase acceleration performance or vehicle structures or enable four wheel drive to be included in vehicles without a net mpg penalty. In other words, technology by itself is not likely to be enough to raise fleet fuel economy levels - this was the conclusion of the 1995 Ailomar Conference on Energy and Sustainable Transportation, organized by the Transportation Research Board's Committees on Energy and Alternative Fuels, and it is one I share.

  19. Fact #692: September 12, 2011 Fuel Economy Distribution for New Cars and Light Trucks

    Broader source: Energy.gov [DOE]

    Nearly 64% of new cars sold in model year (MY) 1975 had combined highway/city fuel economy of 15 miles per gallon (mpg) or less [blue shading]. By 2010, 63% of cars had fuel economy of 25 mpg or...

  20. Light-duty vehicle MPG (miles per gallon) and market shares report, Model year 1989

    SciTech Connect (OSTI)

    Williams, L.S. ); Hu, P.S. )

    1990-04-01

    This issue of Light-Duty Vehicle MPG and Market Shares Report: Model Year 1989 reports the estimated sales-weighted fuel economies, sales, market shares, and other vehicle characteristics of automobiles and light trucks. The estimates are made on a make and model basis (e.g., Chevrolet is a make and Corsica is a model), from model year 1976 to model year 1989. Vehicle sales data are used as weighting factors in the sales-weighted estimation procedure. Thus, the estimates represent averages of the overall new vehicle fleet, reflecting the composition of the fleet. Highlights are provided on the trends in the vehicle characteristics from one model year to the next. Analyses are also made on fuel economy changes to determine what caused the changes. Both new automobile and new light truck fleets experienced fuel economy losses of 0.5 mpg from the previous model year, dropping to 28.0 mpg for automobiles and 20.2 mpg for light trucks. This is the first observed decline in fuel economy of new automobiles since model year 1983 and the largest decline since model year 1976. The main reason for the fuel economy decline in automobiles was that every automobile size class showed either losses or no change in their fuel economies. The fuel economy decline in light trucks was primarily due to the fact that two popular size classes, large pickup and small utility vehicle, both experienced losses in their fuel economies. Overall, the sales-weighted fuel economy of the entire light-duty vehicle fleet (automobiles and light trucks) dropped to 25.0 mpg, a reduction of 0.5 mpg from model year 1988. 9 refs., 32 figs., 50 tabs.

  1. Vehicle Technologies Office Merit Review 2014: Modeling for Market Analysis: HTEB, TRUCK, and LVChoice

    Broader source: Energy.gov [DOE]

    Presentation given by TA Engineering, Inc. at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about HTEB, TRUCK, and...

  2. Lift truck safety review

    SciTech Connect (OSTI)

    Cadwallader, L.C.

    1997-03-01

    This report presents safety information about powered industrial trucks. The basic lift truck, the counterbalanced sit down rider truck, is the primary focus of the report. Lift truck engineering is briefly described, then a hazard analysis is performed on the lift truck. Case histories and accident statistics are also given. Rules and regulations about lift trucks, such as the US Occupational Safety an Health Administration laws and the Underwriter`s Laboratories standards, are discussed. Safety issues with lift trucks are reviewed, and lift truck safety and reliability are discussed. Some quantitative reliability values are given.

  3. Evaluations of 1997 Fuel Consumption Patterns of Heavy Duty Trucks

    SciTech Connect (OSTI)

    Santini, Danilo

    2001-08-05

    The proposed 21st Century Truck program selected three truck classes for focused analysis. On the basis of gross vehicle weight (GVW) classification, these were Class 8 (representing heavy), Class 6 (representing medium), and Class 2b (representing light). To develop and verify these selections, an evaluation of fuel use of commercial trucks was conducted, using data from the 1997 Vehicle Inventory and Use Survey (VIUS). Truck fuel use was analyzed by registered GVW class, and by body type.

  4. The new Mercedes-Benz OM 904 LA light heavy-duty diesel engine for class 6 trucks

    SciTech Connect (OSTI)

    Schittler, M.; Bergmann, H.; Flathmann, K.

    1996-09-01

    As part of a comprehensive strategic product initiative the most important commercial vehicle manufacturer--Mercedes-Benz AG--is step by step renewing its entire product range. This primarily refers to the heart of the vehicles--the engine. After the OM 457 LA, which was developed together with DDC for the special American market demands and which is produced and sold in the US by DDC under the label Series 55, has had its premiere in Freightliner`s Century Class, the OM 904 LA will now follow in the light commercial vehicle class. This engine has a completely new concept of a direct-injection, highly sophisticated turbocharged four-cylinder in-line engine with air-to-air intercooler, whose main characteristics can be outlined by the terms multi-valve technology, high-pressure injection via unit pumps and electronic engine control. This small engine has several interesting features, which--up to now--were only known from class 8 engines. In addition to fulfilling increased customer demands with regard to long service life, easy maintenance, reliability and economy, great attention was paid during the design of the engine to not only fulfill the global regulations, but also account for sufficient potential to comply with further aggravations to be expected. The most important design features and the attained engine ratings are indicated and explained in detail.

  5. Barge Truck Total

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    Barge Truck Total delivered cost per short ton Shipments with transportation rates over total shipments Total delivered cost per short ton Shipments with transportation rates over...

  6. Truck Duty Cycle and Performance Data Collection and Analysis...

    Broader source: Energy.gov (indexed) [DOE]

    Collection and Analysis Program Heavy Duty & Medium Duty Drive Cycle Data Collection for Modeling Expansion Roadmap and Technical White Papers for 21st Century Truck Partnership

  7. Truck Duty Cycle and Performance Data Collection and Analysis...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    More Documents & Publications Heavy Duty & Medium Duty Drive Cycle Data Collection for Modeling Expansion Truck Duty Cycle and Performance Data Collection and Analysis Program 2010 ...

  8. Fact #806: December 2, 2013 Light Vehicle Market Shares, Model Years 1975–2012

    Broader source: Energy.gov [DOE]

    In 1975, cars were by far the dominant vehicle style among new light vehicle sales, with a few vans and pickup trucks. Sport Utility Vehicles (SUVs) accounted for less than 2% of the market at that...

  9. Road to Fuel Savings: Clean Diesel Trucks Gain Momentum with...

    Office of Environmental Management (EM)

    ... Plus, it's compliant with new emissions standards -- an important element in cutting our air pollution in the U.S. If all light trucks and SUVs used an engine like this, Americans ...

  10. Heavy Truck Clean Diesel (HTCD) Program: 2007 Demonstration Truck |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy Heavy Truck Clean Diesel (HTCD) Program: 2007 Demonstration Truck Heavy Truck Clean Diesel (HTCD) Program: 2007 Demonstration Truck 2003 DEER Conference Presentation: Caterpillar Incorporated 2003_deer_milam.pdf (10.59 MB) More Documents & Publications Transient Simulation of a 2007 Prototype Heavy-Duty Engine Diesel Aftertreatment Systems development Demonstration of a 50% Thermal Efficient Diesel Engine - Including HTCD Program Overview

  11. Empty WIPP truck overturns

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Washington TRU Solutions (505) 234-7204 www.wipp.energy.gov U.S. Department of Energy Carlsbad Field Office Waste Isolation Pilot Plant P.O. Box 3090 Carlsbad, New Mexico 88221 DOENews For Immediate Release Empty WIPP truck overturns CARLSBAD, N.M., December 27, 2005 - The U.S. Department of Energy (DOE) Carlsbad Field Office reports that a Waste Isolation Pilot Plant (WIPP) truck carrying three empty TRUPACT-II shipping containers overturned on Interstate 15 near Blackfoot, Idaho, at

  12. Light-duty vehicle summary

    SciTech Connect (OSTI)

    Williams, L.S. ); Hu, P.S. )

    1990-07-01

    This document brings you up to date on the most recent fuel economy and market share data for the new light-duty vehicle fleet. Model year 1990 fuel economies are weighted based on the sales of the first six months of model year 1990 (from September 1989 to March 1990). Sales-weighted fuel economy of all new automobiles decreased in the first six months of model year 1990, from 28.0 mpg in model year 1989 to 27.7 mpg. The compact, midsize, and large size classes, which together claimed 75% of the new automobile market, each showed fuel economy declines of 0.4 mpg or more. Unlike automobiles, new 1990 light trucks showed an overall 0.4 mpg gain from model year 1989. This increase was primarily due to the increased fuel economy of the small van size class. In the first half of model year 1990, small van replaced small pickup as the second most popular light truck size class. Although the fuel economy of light trucks improved, the larger market share of automobiles in the light-duty vehicle market (automobiles and light trucks combined) and the decreased fuel economy in automobiles resulted in an overall reduction of 0.2 mpg for the entire light-duty vehicle fleet in the first half of model year 1990. Also, in the first half of model year 1990, light trucks claimed more than 33% of the light-duty vehicle market--a considerable increase from the 19.8% share in 1976. 9 figs., 18 tabs.

  13. LANL debuts hybrid garbage truck

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Hybrid garbage truck LANL debuts hybrid garbage truck The truck employs a system that stores energy from braking and uses that pressure to help the truck accelerate after each stop. November 19, 2010 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los Alamos National Laboratory sits

  14. Truckstop -- and Truck!-- Electrification

    SciTech Connect (OSTI)

    Skip Yeakel

    2001-12-13

    The conclusions of this paper are: 0.5-1.5 G/H and/or BUSG/Y--how much time and money will it take to quantify and WHY BOTHER TO DO SO? No shortage of things to do re truckstop--+ truck!-- electrification; Better that government and industry should put many eggs in lots of baskets vs. all in one or few; Best concepts will surface as most viable; Economic appeal better than regulation or brute force; Launch Ground Freight Partnership and give it a chance to work; Demonstration is an effective means to educate, and learn from, customers--learning is a two way street; Research, Development, Demonstration, and Deployment (RD 3) are all important but only deployment gets results; TSE can start small in numbers of spaces to accommodate economically inspired growth but upfront plans should be made for expansion if meaningful idle reduction is to follow via TE; 110VAC 15A service/ parking space is minimal--if infrastructure starts like this, upfront plans must be made to increase capacity; Increased electrification of truckstop and truck alike will result in much better life on the road; Improved sleep will improve driver alertness and safety; Reduced idling will significantly reduce fuel use and emissions; Universal appeal for DOD, DOE, DOT, EPA, OEMs, and users alike; Clean coal, gas, hydro, nuclear, or wind energy sources are all distinctly American means by which to generate electricity; Nothing can compete with diesel fuel to serve mobile truck needs; stationary trucks are like power plants--they don't move and should NOT be powered by petroleum products whenever possible; Use American fueled power plants--electricity--to serve truck idling needs wherever practical to do so; encourage economic aspect; Create and reward industry initiatives to reduce fuel use; Eliminate FET on new trucks, provide tax credits (non highway fuel use and investment), provide incentives based on results; Encourage newer/ cleaner truck use; solicit BAAs with mandatory OEM/ fleet

  15. Thermoelectrical Energy Recovery From the Exhaust of a Light...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    More Documents & Publications The Effects of an Exhaust Thermoelectric Generator of a GM Sierra Pickup Truck Progress in Thermoelectrical Energy Recovery from a Light Truck Exhaust ...

  16. Fact #653: December 13, 2010 Import Cars and Trucks Gaining Ground |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy 3: December 13, 2010 Import Cars and Trucks Gaining Ground Fact #653: December 13, 2010 Import Cars and Trucks Gaining Ground The market share for import cars and light trucks has been growing nearly every year since the mid-1990's. Import car market share more than doubled in that time -- from 14.9% in 1996 to 33.7% in 2009. Imports cars have a larger share of the market than import trucks, but import truck market share has nearly tripled since the mid-1990's. Import

  17. Fact #710: January 16, 2012 Engine Energy Use for Heavy Trucks: Where Does

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    the Energy Go? | Department of Energy 10: January 16, 2012 Engine Energy Use for Heavy Trucks: Where Does the Energy Go? Fact #710: January 16, 2012 Engine Energy Use for Heavy Trucks: Where Does the Energy Go? As with light vehicles, heavy trucks also have significant energy losses. The losses shown below are for a typical combination tractor-trailer, but these losses will vary depending on the weight, shape, and size of the truck, and the type of driving (the truck's duty cycle). On the

  18. CoolCab: Reducing Thermal Loads in Long-Haul Trucks (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2010-02-01

    This fact sheet describes how the National Renewable Energy Laboratory's CoolCab project tested and modeled the effects of several thermal-load reduction strategies applied to long-haul truck cabs. NREL partnered with two major truck manufacturers to evaluate three long-haul trucks at NREL's outdoor test facility in Golden, Colorado.

  19. Improving haul truck productivity

    SciTech Connect (OSTI)

    Fiscor, S.

    2007-06-15

    The paper reviews developments in payload management and cycle times. These were discussed at a roundtable held at the Haulage and Loading 2007 conference held in May in Phoenix, AZ, USA. Several original equipment manufacturers (OEMs) explaind what their companies were doing to improve cycle times for trucks, shovels and excavators used in surface coal mining. Quotations are given from Dion Domaschenz of Liebherr and Steve Plott of Cat Global Mining. 4 figs.

  20. FUEL ASSEMBLY SHAKER AND TRUCK TEST SIMULATION

    SciTech Connect (OSTI)

    Klymyshyn, Nicholas A.; Jensen, Philip J.; Sanborn, Scott E.; Hanson, Brady D.

    2014-09-25

    This study continues the modeling support of the SNL shaker table task from 2013 and includes analysis of the SNL 2014 truck test campaign. Detailed finite element models of the fuel assembly surrogate used by SNL during testing form the basis of the modeling effort. Additional analysis was performed to characterize and filter the accelerometer data collected during the SNL testing. The detailed fuel assembly finite element model was modified to improve the performance and accuracy of the original surrogate fuel assembly model in an attempt to achieve a closer agreement with the low strains measured during testing. The revised model was used to recalculate the shaker table load response from the 2013 test campaign. As it happened, the results remained comparable to the values calculated with the original fuel assembly model. From this it is concluded that the original model was suitable for the task and the improvements to the model were not able to bring the calculated strain values down to the extremely low level recorded during testing. The model needs more precision to calculate strains that are so close to zero. The truck test load case had an even lower magnitude than the shaker table case. Strain gage data from the test was compared directly to locations on the model. Truck test strains were lower than the shaker table case, but the model achieved a better relative agreement of 100-200 microstrains (or 0.0001-0.0002 mm/mm). The truck test data included a number of accelerometers at various locations on the truck bed, surrogate basket, and surrogate fuel assembly. This set of accelerometers allowed an evaluation of the dynamics of the conveyance system used in testing. It was discovered that the dynamic load transference through the conveyance has a strong frequency-range dependency. This suggests that different conveyance configurations could behave differently and transmit different magnitudes of loads to the fuel even when travelling down the same road at

  1. WORKSHOP REPORT: Trucks and Heavy-Duty Vehicles Technical Requirements and

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Gaps for Lightweight and Propulsion Materials | Department of Energy Trucks and Heavy-Duty Vehicles Technical Requirements and Gaps for Lightweight and Propulsion Materials WORKSHOP REPORT: Trucks and Heavy-Duty Vehicles Technical Requirements and Gaps for Lightweight and Propulsion Materials wr_trucks_hdvehicles.pdf (811.37 KB) More Documents & Publications WORKSHOP REPORT:Light-Duty Vehicles Technical Requirements and Gaps for Lightweight and Propulsion Materials Summary of the Output

  2. Road to Fuel Savings: Clean Diesel Trucks Gain Momentum with Nissan and

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Cummins Collaboration | Department of Energy Road to Fuel Savings: Clean Diesel Trucks Gain Momentum with Nissan and Cummins Collaboration Road to Fuel Savings: Clean Diesel Trucks Gain Momentum with Nissan and Cummins Collaboration August 28, 2014 - 9:51am Addthis Pictured here is a clean diesel engine for light trucks that was part of Cummins research and development effort from 1997-2004. Supported with funding by the Energy Department, this engine is as clean and quiet as a gasoline

  3. Volvo Trucks North America | Open Energy Information

    Open Energy Info (EERE)

    Volvo Trucks North America Jump to: navigation, search Name: Volvo Trucks North America Place: Dublin, VA Information About Partnership with NREL Partnership with NREL Yes...

  4. Fact #929: June 13, 2016 Heavy Truck Speed Limits Are Inconsistent -

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Dataset | Department of Energy 9: June 13, 2016 Heavy Truck Speed Limits Are Inconsistent - Dataset Fact #929: June 13, 2016 Heavy Truck Speed Limits Are Inconsistent - Dataset Excel file and dataset for Heavy Truck Speed Limits Are Inconsistent fotw#929_web.xlsx (87.51 KB) More Documents & Publications Fact #932: July 4, 2016 Longer Combination Trucks Are Only Permitted on Some Routes - Dataset Fact #923: May 2, 2016 Cylinder Deactivation was Used in More than a Quarter of New Light

  5. Vehicle Technologies Office - AVTA: All Electric Delivery Trucks |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy Delivery Trucks Vehicle Technologies Office - AVTA: All Electric Delivery Trucks The Vehicle Technologies Office's Advanced Vehicle Testing Activity carries out testing on a wide range of advanced vehicles and technologies on dynamometers, closed test tracks, and on-the-road. These results provide benchmark data that researchers can use to develop technology models and guide future research and development. The following set of reports (part of the medium and heavy-duty

  6. NOx Adsorbers for Heavy Duty Truck Engines - Testing and Simulation |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy Adsorbers for Heavy Duty Truck Engines - Testing and Simulation NOx Adsorbers for Heavy Duty Truck Engines - Testing and Simulation This report provides the results of an analytical and experimental sA 2002_deer_hakim.pdf (669.56 KB) More Documents & Publications Use of a Diesel Fuel Processor for Rapid and Efficient Regeneration of Single Leg NOx Adsorber Systems Design, Modeling, and Validation of a Flame Reformer for LNT External Bypass Regeneration Cleaner

  7. Class 8 Truck Freight Efficiency Improvement Project

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Daimler Trucks and Buses 1 Super Truck Program: Vehicle Project Review Recovery Act -Class 8 Truck Freight Efficiency Improvement Project Project ID: ARRAVT080 This presentation does not contain any proprietary, confidential, or otherwise restricted information Derek Rotz (PI & Presenter) Dr. Maik Ziegler Daimler Truck North America LLC June 19 th , 2014 Daimler Trucks and Buses 2 Overview * Project start: April 2010 * Project end: March 2015 * Percent complete: 80% * Resolve thermal &

  8. APBF-DEC NOx Adsorber/DPF Project: SUV / Pick-up Truck Platform

    SciTech Connect (OSTI)

    Webb, C; Weber, P; Thornton,M

    2003-08-24

    The objective of this project is to determine the influence of diesel fuel composition on the ability of NOX adsorber catalyst (NAC) technology, in conjunction with diesel particle filters (DPFs), to achieve stringent emissions levels with a minimal fuel economy impact. The test bed for this project was intended to be a light-duty sport utility vehicle (SUV) with a goal of achieving light-duty Tier 2-Bin 5 tail pipe emission levels (0.07 g/mi. NOX and 0.01 g/mi. PM). However, with the current US market share of light-duty diesel applications being so low, no US 2002 model year (MY) light-duty truck (LDT) or SUV platforms equipped with a diesel engine and having a gross vehicle weight rating (GVWR) less than 8500 lb exist. While the current level of diesel engine use is relatively small in the light-duty class, there exists considerable potential for the diesel engine to gain a much larger market share in the future as manufacturers of heavy light-duty trucks (HLDTs) attempt to offset the negative impact on cooperate average fuel economy (CAFE) that the recent rise in market share of the SUVs and LDTs has caused. The US EPA Tier 2 emission standards also contain regulation to prevent the migration of heavy light-duty trucks and SUV's to the medium duty class. This preventive measure requires that all medium duty trucks, SUV's and vans in the 8,500 to 10,000 lb GVWR range being used as passenger vehicles, meet light-duty Tier 2 standards. In meeting the Tier 2 emission standards, the HLDTs and medium-duty passenger vehicles (MDPVs) will face the greatest technological challenges. Because the MDPV is the closest weight class and application relative to the potential upcoming HLDTs and SUV's, a weight class compromise was made in this program to allow the examination of using a diesel engine with a NAC-DPF system on a 2002 production vehicle. The test bed for this project is a 2500 series Chevrolet Silverado equipped with a 6.6L Duramax diesel engine certified to 2002

  9. French intensive truck garden

    SciTech Connect (OSTI)

    Edwards, T D

    1983-01-01

    The French Intensive approach to truck gardening has the potential to provide substantially higher yields and lower per acre costs than do conventional farming techniques. It was the intent of this grant to show that there is the potential to accomplish the gains that the French Intensive method has to offer. It is obvious that locally grown food can greatly reduce transportation energy costs but when there is the consideration of higher efficiencies there will also be energy cost reductions due to lower fertilizer and pesticide useage. As with any farming technique, there is a substantial time interval for complete soil recovery after there have been made substantial soil modifications. There were major crop improvements even though there was such a short time since the soil had been greatly disturbed. It was also the intent of this grant to accomplish two other major objectives: first, the garden was managed under organic techniques which meant that there were no chemical fertilizers or synthetic pesticides to be used. Second, the garden was constructed so that a handicapped person in a wheelchair could manage and have a higher degree of self sufficiency with the garden. As an overall result, I would say that the garden has taken the first step of success and each year should become better.

  10. Fact #718: March 12, 2012 Number of Flex-Fuel Models Offered Increased in 2011

    Broader source: Energy.gov [DOE]

    General Motors (GM), Ford, and Chrysler have produced many different models of flex-fuel vehicles (cars and light trucks) over the last five years. In 2011, the number of models offered by those...

  11. Dynamical model for light composite fermions

    SciTech Connect (OSTI)

    Derman, E.

    1981-04-01

    A simple dynamical model for the internal structure of the three light lepton and quark generations (..nu../sub e/,e,u,d), (..nu../sub ..mu../,..mu..,c,s), and (..nu../sub tau/,tau,t,b) is proposed. Each generation is constructed of only one fundamental massive generation F=(L-italic/sup 0/,L/sup -/,U,D) with the same (SU/sub 3/)/sub c/ x SU/sub 2/ x U/sub 1/ quantum numbers as the light generations, bound to a core of one or more massive Higgs bosons H, where H is the single physical Higgs boson necessary for spontaneous symmetry breaking in the standard model. For example, e/sup -/=L/sup -/H), ..mu../sup -/=L/sup -/HH), tau/sup -/=L/sup -/HHH). It is shown that the known binding force due to H exchange is attractive and strong enough to produce light bound states. Dynamical calculations for the bound-state composite fermions using the Bethe-Salpeter equation, together with some phenomenological imput, suggest M/sub H/approx.16 TeV and M/sub F/approx.100 GeV. It is likely that such bound states can have properties compatible with the up to now apparently elementary appearance of known fermions, for example, their Dirac magnetic moments and absence of intergeneration radiative decays (such as ..mu -->..e..gamma..). Phenomenological consequences and tests of the model are discussed.

  12. Heavy Truck Engine Program

    SciTech Connect (OSTI)

    Nelson, Christopher

    2009-01-08

    The Heavy Duty Truck Engine Program at Cummins embodied three significant development phases. All phases of work strove to demonstrate a high level of diesel engine efficiency in the face of increasingly stringent emission requirements. Concurrently, aftertreatment system development and refinement was pursued in support of these efficiency demonstrations. The program's first phase focused on the demonstration in-vehicle of a high level of heavy duty diesel engine efficiency (45% Brake Thermal Efficiency) at a typical cruise condition while achieving composite emissions results which met the 2004 U.S. EPA legislated standards. With a combination of engine combustion calibration tuning and the development and application of Urea-based SCR and particulate aftertreatment, these demonstrations were successfully performed by Q4 of 2002. The second phase of the program directed efforts towards an in-vehicle demonstration of an engine system capable of meeting 2007 U.S. EPA legislated emissions requirements while achieving 45% Brake Thermal Efficiency at cruise conditions. Through further combustion optimization, the refinement of Cummins Cooled EGR architecture, the application of a high pressure common rail fuel system and the incorporation of optimized engine parasitics, Cummins Inc. successfully demonstrated these deliverables in Q2 of 2004. The program's final phase set a stretch goal of demonstrating 50% Brake Thermal Efficiency from a heavy duty diesel engine system capable of meeting 2010 U.S. EPA legislated emissions requirements. Cummins chose to pursue this goal through further combustion development and refinement of the Cooled EGR system architecture and also applied a Rankine cycle Waste Heat Recovery technique to convert otherwise wasted thermal energy to useful power. The engine and heat recovery system was demonstrated to achieve 50% Brake Thermal Efficiency while operating at a torque peak condition in second quarter, 2006. The 50% efficient engine

  13. Fuel economy and emissions reduction of HD hybrid truck over transient

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    driving cycles and interstate roads | Department of Energy economy and emissions reduction of HD hybrid truck over transient driving cycles and interstate roads Fuel economy and emissions reduction of HD hybrid truck over transient driving cycles and interstate roads Compares simulated fuel economy and emissions fro conventional and hybrid Class 8 heavy trucks p-12_gao.pdf (345.05 KB) More Documents & Publications Advanced HD Engine Systems and Emissions Control Modeling and Analysis

  14. State-of-the-Art and Emergin Truck Engine Technologies | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Energy State-of-the-Art and Emergin Truck Engine Technologies State-of-the-Art and Emergin Truck Engine Technologies 2003 DEER Conference Presentation: DaimlerChrysler Powersystems 2003_deer_schittler.pdf (940.29 KB) More Documents & Publications SCR Systems for Heavy Duty Trucks: Progress Towards Meeting Euro 4 Emission Standards in 2005 Aftertreatment Modeling Status, Futur Potential, and Application Issues Diesel Emission Control Technology Review

  15. Raley's LNG Truck Site Final Data Report

    SciTech Connect (OSTI)

    Battelle

    1999-07-01

    Raley's is a 120-store grocery chain with headquarters in Sacramento, California, that has been operating eight heavy-duty LNG trucks (Kenworth T800 trucks with Cummins L10-300G engines) and two LNG yard tractors (Ottawa trucks with Cummins B5.9G engines) since April 1997. This report describes the results of data collection and evaluation of the eight heavy-duty LNG trucks compared to similar heavy-duty diesel trucks operating at Raley's. The data collection and evaluation are a part of the U.S. Department of Energy (DOE)/National Renewable Energy Laboratory (NREL) Alternative Fuel Truck Evaluation Project.

  16. Light front NJL model at finite temperature

    SciTech Connect (OSTI)

    Strauss, S.; Beyer, M.; Mattiello, S.

    2005-06-14

    We investigate the properties of qq and qq-bar states in hot and dense quark matter in the framework of light-front finite temperature field theory. Presently we consider the Nambu Jona-Lasinio (NJL) model and derive the gap equation at finite temperature and density. We study pionic and scalar diquark dynamics in quark matter and compute the two-body masses and the Mott dissociation using a t-matrix approach. For the scalar diquark we determine the critical temperature of color superconductivity.

  17. Truck acoustic data analyzer system

    DOE Patents [OSTI]

    Haynes, Howard D.; Akerman, Alfred; Ayers, Curtis W.

    2006-07-04

    A passive vehicle acoustic data analyzer system having at least one microphone disposed in the acoustic field of a moving vehicle and a computer in electronic communication the microphone(s). The computer detects and measures the frequency shift in the acoustic signature emitted by the vehicle as it approaches and passes the microphone(s). The acoustic signature of a truck driving by a microphone can provide enough information to estimate the truck speed in miles-per-hour (mph), engine speed in rotations-per-minute (RPM), turbocharger speed in RPM, and vehicle weight.

  18. HAND TRUCK FOR HANDLING EQUIPMENT

    DOE Patents [OSTI]

    King, D.W.

    1959-02-24

    A truck is described for the handling of large and relatively heavy pieces of equipment and particularly for the handling of ion source units for use in calutrons. The truck includes a chassis and a frame pivoted to the chassis so as to be operable to swing in the manner of a boom. The frame has spaced members so arranged that the device to be handled can be suspended between or passed between these spaced members and also rotated with respect to the frame when the device is secured to the spaced members.

  19. Class 8 Truck Freight Efficiency Improvement Project

    Broader source: Energy.gov (indexed) [DOE]

    least 20% improvement through a heavy-duty diesel engine capable of ... Tractor Trailer 16.5% 2.4% (incl. hybrid) NEXT STEP: build the truck Approach Daimler Trucks and Buses ...

  20. Norcal Prototype LNG Truck Fleet: Final Results

    SciTech Connect (OSTI)

    Not Available

    2004-07-01

    U.S. DOE and National Renewable Energy Laboratory evaluated Norcal Waste Systems liquefied natural gas (LNG) waste transfer trucks. Trucks had prototype Cummins Westport ISXG engines. Report gives final evaluation results.

  1. EERE Success Story-SuperTruck Initiative Partner Improves Class 8 Truck

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Efficiency by 115% | Department of Energy SuperTruck Initiative Partner Improves Class 8 Truck Efficiency by 115% EERE Success Story-SuperTruck Initiative Partner Improves Class 8 Truck Efficiency by 115% June 23, 2015 - 3:21pm Addthis EERE Success Story—SuperTruck Initiative Partner Improves Class 8 Truck Efficiency by 115% With help from the Energy Department, Class 8 trucks recently hit a record of 12 miles per gallon (mpg) freight efficiency. This milestone is actually a 115%

  2. Truck Thermoacoustic Generator and Chiller

    SciTech Connect (OSTI)

    Keolian, Robert

    2011-03-31

    This Final Report describes the accomplishments of the US Department of Energy (DOE) cooperative agreement project DE-FC26-04NT42113 - Truck Thermoacoustic Generator and Chiller - whose goal is to design, fabricate and test a thermoacoustic piezoelectric generator and chiller system for use on over-the-road heavy-duty-diesel trucks, driven alternatively by the waste heat of the main diesel engine exhaust or by a burner integrated into the thermoacoustic system. The thermoacoustic system would utilize engine exhaust waste heat to generate electricity and cab air conditioning, and would also function as an auxiliary power unit (APU) for idle reduction. The unit was to be tested in Volvo engine performance and endurance test cells and then integrated onto a Class 8 over-the-road heavy-duty-diesel truck for further testing on the road. The project has been a collaboration of The Pennsylvania State University Applied Research Laboratory, Los Alamos National Laboratory, Clean Power Resources Inc., and Volvo Powertrain (Mack Trucks Inc.). Cost share funding was provided by Applied Research Laboratory, and by Clean Power Resources Inc via its grant from Innovation Works - funding that was derived from the Commonwealth of Pennsylvania. Los Alamos received its funding separately through DOE Field Work Proposal 04EE09.

  3. EERE Success Story-Uncle Sam Turns to SAM for Solar Modeling...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Addthis Related Articles President Barack Obama delivers remarks on fuel efficiency standards for 2017-2025 model year cars and light-duty trucks during an event at the Washington ...

  4. Analysis of liquid natural gas as a truck fuel: a system dynamics approach

    SciTech Connect (OSTI)

    Bray, M.A.; Sebo, D.E.; Mason, T.L.; Mills, J.I.; Rice, R.E.

    1996-10-01

    The purpose of this analysis is to evaluate the potential for growth in use of liquid natural gas (LNG) fueled trucks. . A system dynamics model was constructed for the analysis and a variety of scenarios were investigated. The analysis considers the economics of LNG fuel in the context of the trucking industry to identify barriers to the increased use of LNG trucks and potential interventions or leverage points which may overcome these barriers. The study showed that today, LNG use in trucks is not yet economically viable. A large change in the savings from fuel cost or capital cost is needed for the technology to take off. Fleet owners have no way now to benefit from the environmental benefits of LNG fuel nor do they benefit from the clean burning nature of the fuel. Changes in the fuel cost differential between diesel and LNG are not a research issue. However, quantifying the improvements in reliability and wear from the use of clean fuel could support increased maintenance and warranty periods. Many people involved in the use of LNG for trucks believe that LNG has the potential to occupy a niche within the larger diesel truck business. But if LNG in trucks can become economic, the spread of fuel stations and technology improvements could lead to LNG trucks becoming the dominant technology. An assumption in our simulation work is that LNG trucks will be purchased when economically attractive. None of the simulation results show LNG becoming economic but then only to the level of a niche market.

  5. UPS CNG Truck Fleet Final Report

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    ® ® ® ® ® ® ® Clean Air Natural Gas Vehicle This is a Clean Air Natural Gas Vehicle This is a UPS CNG Truck Fleet UPS CNG Truck Fleet UPS CNG Truck Fleet Final results Final Results Produced for the U.S. Department of Energy (DOE) by the National Renewable Energy Laboratory (NREL), a DOE national laboratory Alternative Fuel Trucks DOE/NREL Truck Evaluation Project By Kevin Chandler, Battelle Kevin Walkowicz, National Renewable Energy Laboratory Nigel Clark, West Virginia University

  6. Model Specification for Networked Outdoor Lighting Control Systems

    Broader source: Energy.gov [DOE]

    The DOE Municipal Solid-State Street Lighting Consortium's Model Specification for Networked Outdoor Lighting Control Systems is a tool designed to help cities, utilities, and other local agencies...

  7. Solar hydrogen for urban trucks

    SciTech Connect (OSTI)

    Provenzano, J.: Scott, P.B.; Zweig, R.

    1997-12-31

    The Clean Air Now (CAN) Solar Hydrogen Project, located at Xerox Corp., El Segundo, California, includes solar photovoltaic powered hydrogen generation, compression, storage and end use. Three modified Ford Ranger trucks use the hydrogen fuel. The stand-alone electrolyzer and hydrogen dispensing system are solely powered by a photovoltaic array. A variable frequency DC-AC converter steps up the voltage to drive the 15 horsepower compressor motor. On site storage is available for up to 14,000 standard cubic feet (SCF) of solar hydrogen, and up to 80,000 SCF of commercial hydrogen. The project is 3 miles from Los Angeles International airport. The engine conversions are bored to 2.9 liter displacement and are supercharged. Performance is similar to that of the Ranger gasoline powered truck. Fuel is stored in carbon composite tanks (just behind the driver`s cab) at pressures up to 3600 psi. Truck range is 144 miles, given 3600 psi of hydrogen. The engine operates in lean burn mode, with nil CO and HC emissions. NO{sub x} emissions vary with load and rpm in the range from 10 to 100 ppm, yielding total emissions at a small fraction of the ULEV standard. Two trucks have been converted for the Xerox fleet, and one for the City of West Hollywood. A public outreach program, done in conjunction with the local public schools and the Department of Energy, introduces the local public to the advantages of hydrogen fuel technologies. The Clean Air Now program demonstrates that hydrogen powered fleet development is an appropriate, safe, and effective strategy for improvement of urban air quality, energy security and avoidance of global warming impact. Continued technology development and cost reduction promises to make such implementation market competitive.

  8. NREL: Transportation Research - Truck Stop Electrification Testing

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Truck drivers typically idle their vehicles during mandated rest periods to maintain access to air conditioning, heat, and electricity. TSE sites allow truckers to enjoy these ...

  9. POST 10/Truck Inspection Station (Map 3

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Station (Map 3) Changes Effective January 11, 2010 Pajarito Corridor Deliveries: Drivers of commercial delivery trucks headed to the Pajarito Corridor (Pajarito Road bounded...

  10. Class 8 Truck Freight Efficiency Improvement Project

    Broader source: Energy.gov (indexed) [DOE]

    Derek Rotz (PI & Presenter) Dr. Maik Ziegler Daimler Truck ... controls integration (aux, hybrid, powertrain, waste heat, ... 20% improvement through a heavy-duty diesel engine capable ...

  11. Vehicle Technologies Office Merit Review 2015: Volvo SuperTruck...

    Energy Savers [EERE]

    Volvo SuperTruck Vehicle Technologies Office Merit Review 2015: Volvo SuperTruck Presentation given by Volvo Trucks at 2015 DOE Hydrogen and Fuel Cells Program and Vehicle ...

  12. Underground Salt Haul Truck Fire at the Waste Isolation Pilot...

    Office of Environmental Management (EM)

    Underground Salt Haul Truck Fire at the Waste Isolation Pilot Plant February 5, 2014 March 2014 Salt Haul Truck Fire at the Waste Isolation Pilot Plant Salt Haul Truck Fire at the ...

  13. Fuel Cell Powered Lift Truck

    SciTech Connect (OSTI)

    Moulden, Steve

    2015-08-20

    This project, entitled “Recovery Act: Fuel Cell-Powered Lift Truck Sysco (Houston) Fleet Deployment”, was in response to DOE funding opportunity announcement DE-PS36-08GO98009, Topic 7B, which promotes the deployment of fuel cell powered material handling equipment in large, multi-shift distribution centers. This project promoted large-volume commercialdeployments and helped to create a market pull for material handling equipment (MHE) powered fuel cell systems. Specific outcomes and benefits involved the proliferation of fuel cell systems in 5-to 20-kW lift trucks at a high-profile, real-world site that demonstrated the benefits of fuel cell technology and served as a focal point for other nascent customers. The project allowed for the creation of expertise in providing service and support for MHE fuel cell powered systems, growth of existing product manufacturing expertise, and promoted existing fuel cell system and component companies. The project also stimulated other MHE fleet conversions helping to speed the adoption of fuel cell systems and hydrogen fueling technology. This document also contains the lessons learned during the project in order to communicate the successes and difficulties experienced, which could potentially assist others planning similar projects.

  14. Hydrogen Industrial Trucks | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Industrial Trucks Hydrogen Industrial Trucks Slides from the U.S. Department of Energy Hydrogen Component and System Qualification Workshop held November 4, 2010 in Livermore, CA. csqw_harris.pdf (1.5 MB) More Documents & Publications Non-Metals Workshop Fuel Cell Technologies Program Overview: 2012 IEA HIA Hydrogen Safety Stakeholder Workshop US DRIVE Hydrogen Codes and Standards Technical Team Roadmap

  15. Waste Management's LNG Truck Fleet: Final Results

    SciTech Connect (OSTI)

    Chandler, K.; Norton, P.; Clark, N.

    2001-01-25

    Waste Management, Inc., began operating a fleet of heavy-duty LNG refuse trucks at its Washington, Pennsylvania, facility. The objective of the project was to provide transportation professionals with quantitative, unbiased information on the cost, maintenance, operational, and emissions characteristics of LNG as one alternative to conventional diesel for heavy-duty trucking applications.

  16. Fact #726: May 7, 2012 SUVs: Are They Cars or Trucks? | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Fact 726: May 7, 2012 SUVs: Are They Cars or Trucks? The Corporate Average Fuel Economy (CAFE) Standards set for model years (MY) 2011 through 2016 include small, 2-wheel drive ...

  17. Vehicle Technologies Office Merit Review 2015: Class 8 Truck...

    Office of Environmental Management (EM)

    Vehicle Technologies Office Merit Review 2015: SuperTruck Program: Engine Project Review Vehicle Technologies Office Merit Review 2014: SuperTruck Program: Engine Project Review

  18. Cummins SuperTruck Program - Technology and System Level Demonstration...

    Broader source: Energy.gov (indexed) [DOE]

    More Documents & Publications Cummins SuperTruck Program - Technology and System Level Demonstration of Highly Efficient and Clean, Diesel Powered Class 8 Trucks Supertruck ...

  19. Volvo SuperTruck - Powertrain Technologies for Efficiency Improvement...

    Broader source: Energy.gov (indexed) [DOE]

    More Documents & Publications Volvo SuperTruck - Powertrain Technologies for Efficiency Improvement Vehicle Technologies Office Merit Review 2015: Volvo SuperTruck - Powertrain ...

  20. Vehicle Technologies Office Merit Review 2015: Cummins SuperTruck...

    Broader source: Energy.gov (indexed) [DOE]

    Peer Evaluation Meeting about Cummins SuperTruck program technology and system level ... Vehicle Technologies Office Merit Review 2015: Volvo SuperTruck - Powertrain Technologies ...

  1. Normal Conditions of Transport Truck Test of a Surrogate Fuel...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Normal Conditions of Transport Truck Test of a Surrogate Fuel Assembly. Citation Details In-Document Search Title: Normal Conditions of Transport Truck Test of a Surrogate Fuel...

  2. Energy Department, Volvo Partnership Builds More Efficient Trucks...

    Energy Savers [EERE]

    Department, Volvo Partnership Builds More Efficient Trucks and Manufacturing Plants Energy Department, Volvo Partnership Builds More Efficient Trucks and Manufacturing Plants ...

  3. Boondocks Truck Stop Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    In Service Owner Boondocks Truck Stop Energy Purchaser Boondocks Truck Stop Location IA Coordinates 42.4703, -93.5624 Show Map Loading map... "minzoom":false,"mappingservi...

  4. SuperTruck Team Achieves 115% Freight Efficiency Improvement...

    Broader source: Energy.gov (indexed) [DOE]

    While the original SuperTruck goal was to improve freight efficiency by 50 percent compared to a baseline vehicle, Daimler Trucks North America (DTNA) announced that their ...

  5. DOE Seeks Trucking Services for Transuranic Waste Shipments ...

    Office of Environmental Management (EM)

    Seeks Trucking Services for Transuranic Waste Shipments DOE Seeks Trucking Services for Transuranic Waste Shipments March 30, 2011 - 12:00pm Addthis Media Contact Bill Taylor ...

  6. Vehicle Technologies Office Merit Review 2014: Class 8 Truck...

    Energy Savers [EERE]

    Vehicle Technologies Office Merit Review 2014: Class 8 Truck Freight Efficiency Improvement Project Presentation given by Daimler Truck North America LLC at 2014 DOE Hydrogen and ...

  7. Solid SCR Demonstration Truck Application | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    SCR Demonstration Truck Application Solid SCR Demonstration Truck Application Demonstrate the feasibility and performance of the FEV Solid SCR (Ammonium Carbamate) Technology ...

  8. Hydrogen Fuel Cells and Electric Forklift Trucks | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Fuel Cells and Electric Forklift Trucks Hydrogen Fuel Cells and Electric Forklift Trucks Presentation for Dec. 17, 2008 hydrogen bimonthly informational call and meeting series for ...

  9. WORKSHOP REPORT: Trucks and Heavy-Duty Vehicles Technical Requirements...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Trucks and Heavy-Duty Vehicles Technical Requirements and Gaps for Lightweight and Propulsion Materials WORKSHOP REPORT: Trucks and Heavy-Duty Vehicles Technical Requirements and ...

  10. Volvo Truck Headquarters in North Carolina to Host Event With...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Volvo Truck Headquarters in North Carolina to Host Event With Acting Under Secretary of Energy Majumdar Volvo Truck Headquarters in North Carolina to Host Event With Acting Under ...

  11. Vehicle Technologies Office: 21st Century Truck Technical Goals

    Broader source: Energy.gov [DOE]

    The 21st Century Truck Partnership aims to improve fuel efficiency in heavy trucks through improvements in engine efficiency, aerodynamics, and rolling resistance.

  12. Vehicle Technologies Office Merit Review 2015: Volvo SuperTruck...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    SuperTruck - Powertrain Technologies for Efficiency Improvement Vehicle Technologies Office Merit Review 2015: Volvo SuperTruck - Powertrain Technologies for Efficiency Improvement...

  13. NJ Compressed Natural Gas Refuse Trucks, Shuttle Buses and Infrastruct...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    NJ Compressed Natural Gas Refuse Trucks, Shuttle Buses and Infrastructure NJ Compressed Natural Gas Refuse Trucks, Shuttle Buses and Infrastructure 2012 DOE Hydrogen and Fuel Cells ...

  14. SANBAG Natural Gas Truck Project | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    SANBAG Natural Gas Truck Project SANBAG Natural Gas Truck Project 2010 DOE Vehicle Technologies and Hydrogen Programs Annual Merit Review and Peer Evaluation Meeting, June 7-11, ...

  15. INFOGRAPHIC: How SuperTruck is Making Heavy Duty Vehicles More Efficient

    Broader source: Energy.gov [DOE]

    How the Energy Department's SuperTruck initiative is making America's heavy duty trucks more sustainable.

  16. Effect of Weight and Roadway Grade on the Fuel Economy of Class-8 Frieght Trucks

    SciTech Connect (OSTI)

    Franzese, Oscar; Davidson, Diane

    2011-11-01

    In 2006-08, the Oak Ridge National Laboratory, in collaboration with several industry partners, collected real-world performance and situational data for long-haul operations of Class-8 trucks from a fleet engaged in normal freight operations. Such data and information are useful to support Class-8 modeling of combination truck performance, technology evaluation efforts for energy efficiency, and to provide a means of accounting for real-world driving performance within combination truck research and analyses. The present study used the real-world information collected in that project to analyze the effects that vehicle speed and vehicle weight have on the fuel efficiency of Class-8 trucks. The analysis focused on two type of terrains, flat (roadway grades ranging from -1% to 1%) and mild uphill terrains (roadway grades ranging from 1% to 3%), which together covered more than 70% of the miles logged in the 2006-08 project (note: almost 2/3 of the distance traveled on mild uphill terrains was on terrains with 1% to 2% grades). In the flat-terrain case, the results of the study showed that for light and medium loads, fuel efficiency decreases considerably as speed increases. For medium-heavy and heavy loads (total vehicle weight larger than 65,000 lb), fuel efficiency tends to increase as the vehicle speed increases from 55 mph up to about 58-60 mph. For speeds higher than 60 mph, fuel efficiency decreases at an almost constant rate with increasing speed. At any given speed, fuel efficiency decreases and vehicle weight increases, although the relationship between fuel efficiency and vehicle weight is not linear, especially for vehicle weights above 65,000 lb. The analysis of the information collected while the vehicles were traveling on mild upslope terrains showed that the fuel efficiency of Class-8 trucks decreases abruptly with vehicle weight ranging from light loads up to medium-heavy loads. After that, increases in the vehicle weight only decrease fuel

  17. Powertrain Controls Optimization for HD Hybrid Line Haul Trucks - FY2014 Annual Report

    SciTech Connect (OSTI)

    Smith, David E.

    2014-12-01

    This is a vehicle system level project, encompassing analytical modeling and supervisory controls development as well as experimental verification/validation testing at the component, powertrain, and full vehicle system level. This project supports the goal of petroleum consumption reduction for medium and heavy trucks through the development of advanced hybrid technologies and control systems. VSST has invested previously in R&D to support hybrid energy storage systems (Li-ion plus ultra-caps) for light duty, passenger car applications. This research will be extended to the MD and HD sector where current battery technology is not mature enough to handle the substantial regenerative braking power levels these trucks are capable of producing. With this hybrid energy storage system, substantial gains in overall vehicle efficiency are possible. In addition, advanced combustion technologies, such as RCCI, will be implemented into an advanced hybrid powertrain for a Class 8 line haul application. This powertrain, leveraged from other VSST work (Meritor, a current ORNL/VSST partner), is ideal for taking advantage of the benefits of RCCI operation due to its series hybrid mode of operation. Emissions control is also a focus of this project, especially due to the fact that RCCI creates a low temperature exhaust stream that must addressed.

  18. Comparative Study of Hybrid Powertrains on Fuel Saving, Emissions, and Component Energy Loss in HD Trucks

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Gao, Zhiming; Finney, Charles; Daw, Charles; LaClair, Tim J.; Smith, David

    2014-09-30

    We compared parallel and series hybrid powertrains on fuel economy, component energy loss, and emissions control in Class 8 trucks over both city and highway driving. A comprehensive set of component models describing battery energy, engine fuel efficiency, emissions control, and power demand interactions for heavy duty (HD) hybrids has been integrated with parallel and series hybrid Class 8 trucks in order to identify the technical barriers of these hybrid powertrain technologies. The results show that series hybrid is absolutely negative for fuel economy benefit of long-haul trucks due to an efficiency penalty associated with the dual-step conversions of energymore » (i.e. mechanical to electric to mechanical). The current parallel hybrid technology combined with 50% auxiliary load reduction could elevate 5-7% fuel economy of long-haul trucks, but a profound improvement of long-haul truck fuel economy requires additional innovative technologies for reducing aerodynamic drag and rolling resistance losses. The simulated emissions control indicates that hybrid trucks reduce more CO and HC emissions than conventional trucks. The simulated results further indicate that the catalyzed DPF played an important role in CO oxidations. Limited NH3 emissions could be slipped from the Urea SCR, but the average NH3 emissions are below 20 ppm. Meanwhile our estimations show 1.5-1.9% of equivalent fuel-cost penalty due to urea consumption in the simulated SCR cases.« less

  19. Comparative Study of Hybrid Powertrains on Fuel Saving, Emissions, and Component Energy Loss in HD Trucks

    SciTech Connect (OSTI)

    Gao, Zhiming; Finney, Charles; Daw, Charles; LaClair, Tim J.; Smith, David

    2014-09-30

    We compared parallel and series hybrid powertrains on fuel economy, component energy loss, and emissions control in Class 8 trucks over both city and highway driving. A comprehensive set of component models describing battery energy, engine fuel efficiency, emissions control, and power demand interactions for heavy duty (HD) hybrids has been integrated with parallel and series hybrid Class 8 trucks in order to identify the technical barriers of these hybrid powertrain technologies. The results show that series hybrid is absolutely negative for fuel economy benefit of long-haul trucks due to an efficiency penalty associated with the dual-step conversions of energy (i.e. mechanical to electric to mechanical). The current parallel hybrid technology combined with 50% auxiliary load reduction could elevate 5-7% fuel economy of long-haul trucks, but a profound improvement of long-haul truck fuel economy requires additional innovative technologies for reducing aerodynamic drag and rolling resistance losses. The simulated emissions control indicates that hybrid trucks reduce more CO and HC emissions than conventional trucks. The simulated results further indicate that the catalyzed DPF played an important role in CO oxidations. Limited NH3 emissions could be slipped from the Urea SCR, but the average NH3 emissions are below 20 ppm. Meanwhile our estimations show 1.5-1.9% of equivalent fuel-cost penalty due to urea consumption in the simulated SCR cases.

  20. Comparative Study of Hybrid Powertrains on Fuel Saving, Emissions, and Component Energy Loss in HD Trucks

    SciTech Connect (OSTI)

    Gao, Zhiming; FINNEY, Charles E A; Daw, C Stuart; LaClair, Tim J; Smith, David E

    2014-01-01

    We compared parallel and series hybrid powertrains on fuel economy, component energy loss, and emissions control in Class 8 trucks over both city and highway driving. A comprehensive set of component models describing battery energy, engine fuel efficiency, emissions control, and power demand interactions for heavy duty (HD) hybrids has been integrated with parallel and series hybrid Class 8 trucks in order to identify the technical barriers of these hybrid powertrain technologies. The results show that series hybrid is absolutely negative for fuel economy benefit of long-haul trucks due to an efficiency penalty associated with the dual-step conversions of energy (i.e. mechanical to electric to mechanical). The current parallel hybrid technology combined with 50% auxiliary load reduction could elevate 5-7% fuel economy of long-haul trucks, but a profound improvement of long-haul truck fuel economy requires additional innovative technologies for reducing aerodynamic drag and rolling resistance losses. The simulated emissions control indicates that hybrid trucks reduce more CO and HC emissions than conventional trucks. The simulated results further indicate that the catalyzed DPF played an important role in CO oxidations. Limited NH3 emissions could be slipped from the Urea SCR, but the average NH3 emissions are below 20 ppm. Meanwhile our estimations show 1.5-1.9% of equivalent fuel-cost penalty due to urea consumption in the simulated SCR cases.

  1. EERE Success Story-Cummins Improving Pick-Up Truck Engine Efficiency with

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    DOE and Nissan | Department of Energy Cummins Improving Pick-Up Truck Engine Efficiency with DOE and Nissan EERE Success Story-Cummins Improving Pick-Up Truck Engine Efficiency with DOE and Nissan April 8, 2015 - 12:00am Addthis Cummins, the world's largest diesel engine manufacturer, has long partnered with the Vehicle Technologies Office's (VTO) advanced combustion program to develop high-efficiency, advanced engines for heavy and light-duty vehicles. While one major light-duty technology

  2. Mathematical Models Shed New Light on Cancer Mutations

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mathematical Models Shed New Light on Cancer Mutations Mathematical Models Shed New Light on Cancer Mutations Calculations Run at NERSC Pinpoint Rare Mutants More Quickly November 3, 2014 Contact: David Cameron, 617.432.0441, david_cameron@hms.harvard.edu cancermutations3 Heat map of the average magnitude of interaction energies projected onto a structural representation of SH2 domains (white) in complex with phosphopeptide (green). SH2 (Src Homology 2) is a protein domain found in many

  3. Modeling Feat Sheds Light on Protein Channel's Function

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Modeling Feat Sheds Light on Protein Channel's Function Modeling Feat Sheds Light on Protein Channel's Function November 1, 2012 NERSC Contact: Linda Vu, lvu@lbl.gov, +1 510 495 2402 nerscweb.png The ribosome (red-blue) in complex with the translocon channel (green), which is embedded in the cell membrane (yellow, white). Proteins that are inserted via the ribosome into the channel can either be laterally integrated into the cell membrane or secreted across the cell membrane (inset). (Image

  4. Running Line-Haul Trucks on Ethanol

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    I magine driving a 55,000-pound tractor- trailer that runs on corn! If you find it difficult to imagine, you can ask the truck drivers for Archer Daniels Midland (ADM) what it's like. For the past 4 years, they have been piloting four trucks powered by ethyl alcohol, or "ethanol," derived from corn. Several advantages to operating trucks on ethanol rather than on conventional petro- leum diesel fuel present themselves. Because ethanol can be produced domestically, unlike most of our

  5. Vehicle Technologies Office: 21st Century Truck Partnership | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Energy 21st Century Truck Partnership Vehicle Technologies Office: 21st Century Truck Partnership Logo for 21st Century Truck Partnership. Partial outline of three various size medium to heavy-duty trucks followed by the words, 21st Century Truck Partnership. Medium-duty and heavy-duty trucks play a vital role in moving freight and passengers, serving as the backbone of America's economy. These trucks also play essential roles in other parts of society, such as maintaining our electricity

  6. In-Cab Air Quality of Trucks Air Conditioned and Kept in Electrified Truck Stop

    SciTech Connect (OSTI)

    Lee, Doh-Won; Zietsman, Josias; Farzaneh, Mohamadreza; Li, Wen-Whai; Olvera, Hector; Storey, John Morse; Kranendonk, Laura

    2009-01-01

    At night, long-haul truck drivers rest inside the cabins of their vehicles. Therefore, the in-cab air quality while air conditioning (A/C) is being provided can be a great concern to the drivers health. The effect of using different A/C methods [truck's A/C, auxiliary power unit (APU), and truck stop electrification (TSE) unit] on in-cab air quality of a heavy-duty diesel vehicle was investigated at an electrified truck stop in the El Paso, Texas, area. The research team measured the in-cabin and the ambient air quality adjacent to the parked diesel truck as well as emissions from the truck and an APU while it was providing A/C. The measured results were compared and analyzed. On the basis of these results, it was concluded that the TSE unit provided better in-cab air quality while supplying A/C. Furthermore, the truck and APU exhaust emissions were measured, and fuel consumption of the truck (while idling) and the APU (during operation) were compared. The results led to the finding that emissions from the APU were less than those from the truck's engine idling, but the APU consumed more fuel than the engine while providing A/C under given conditions.

  7. Slow speed object detection for haul trucks

    SciTech Connect (OSTI)

    2009-09-15

    Caterpillar integrates radar technology with its current camera based system. Caterpillar has developed the Integrated Object Detection System, a slow speed object detection system for mining haul trucks. Object detection is a system that aids the truck operator's awareness of their surroundings. The system consists of a color touch screen display along with medium- and short-range radar as well as cameras, harnesses and mounting hardware. It is integrated into the truck's Work Area Vision System (WAVS). After field testing in 2007, system commercialization began in 2008. Prototype systems are in operation in Australia, Utah and Arizona and the Integrated Object Detection System will be available in the fourth quarter of 2009 and on production trucks 785C, 789C, 793D and 797B. The article is adapted from a presentation by Mark Richards of Caterpillar to the Haulage & Loading 2009 conference, May, held in Phoenix, AZ. 1 fig., 5 photos.

  8. NREL: Transportation Research - Truck Platooning Testing

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    vehicles to accelerate or brake simultaneously. Track Testing of Platooned Tractor-Trailer Trucks In 2014, the team conducted track testing of three SmartWay tractors-two...

  9. Raley's LNG Truck Fleet: Final Results

    SciTech Connect (OSTI)

    Chandler, K.; Norton, P.; Clark, N.

    2000-05-03

    Raley's, a large retail grocery company based in Northern California, began operating heavy-duty trucks powered by liquefied natural gas (LNG) in 1997, in cooperation with the Sacramento Metropolitan Air Quality Management District (SMAQMD). The US Department of Energy (DOE) Office of Heavy Vehicle Technologies (OHVT) sponsored a research project to collect and analyze data on the performance and operation costs of eight of Raley's LNG trucks in the field. Their performance was compared with that of three diesel trucks operating in comparable commercial service. The objective of the DOE research project, which was managed by the National Renewable Energy Laboratory (NREL), was to provide transportation professionals with quantitative, unbiased information on the cost, maintenance, operational, and emissions characteristics of LNG as one alternative to conventional diesel fuel for heavy-duty trucking applications.

  10. Alternative Fuels Data Center: Kentucky Trucking Company Adds CNG Vehicles

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    to Its Fleet Kentucky Trucking Company Adds CNG Vehicles to Its Fleet to someone by E-mail Share Alternative Fuels Data Center: Kentucky Trucking Company Adds CNG Vehicles to Its Fleet on Facebook Tweet about Alternative Fuels Data Center: Kentucky Trucking Company Adds CNG Vehicles to Its Fleet on Twitter Bookmark Alternative Fuels Data Center: Kentucky Trucking Company Adds CNG Vehicles to Its Fleet on Google Bookmark Alternative Fuels Data Center: Kentucky Trucking Company Adds CNG

  11. Alternative Fuels Data Center: Liquefied Natural Gas Powers Trucks in

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    Connecticut Liquefied Natural Gas Powers Trucks in Connecticut to someone by E-mail Share Alternative Fuels Data Center: Liquefied Natural Gas Powers Trucks in Connecticut on Facebook Tweet about Alternative Fuels Data Center: Liquefied Natural Gas Powers Trucks in Connecticut on Twitter Bookmark Alternative Fuels Data Center: Liquefied Natural Gas Powers Trucks in Connecticut on Google Bookmark Alternative Fuels Data Center: Liquefied Natural Gas Powers Trucks in Connecticut on Delicious

  12. Super Truck -- 50% Improvement In Class 8 Freight Efficiency | Department

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    of Energy Super Truck -- 50% Improvement In Class 8 Freight Efficiency Super Truck -- 50% Improvement In Class 8 Freight Efficiency Presents first year highlights from Detroit Diesel Corporation and Daimler Trucks, NA joint SuperTruck engine and vehicle project to demonstrate a 50 percent freight efficiency improvement deer11_sisken.pdf (2.17 MB) More Documents & Publications Super Truck Program: Engine Project Review High-Efficiency Engine Technologies Session Introduction Roadmapping

  13. Volvo Super Truck Overview and Approach | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Volvo Super Truck Overview and Approach Volvo Super Truck Overview and Approach Provides overview and discusses approach of the Volvo Super Truck Team to develop a number of advanced technologies to significantly improve freight efficiency of long-haul trucks deer11_amar.pdf (936.68 KB) More Documents & Publications Impact of Vehicle Efficiency Improvements on Powertrain Design Vehicle Technologies Office Merit Review 2016: Volvo SuperTruck - Powertrain Technologies for Efficiency

  14. Test, Evaluation, and Demonstration of Practical Devices/Systems to Reduce Aerodynamic Drag of Tractor/Semitrailer Combination Unit Trucks

    SciTech Connect (OSTI)

    Scott Smith; Karla Younessi; Matt Markstaller; Dan Schlesinger; Bhaskar Bhatnagar; Donald Smith; Bruno Banceu; Ron Schoon; V.K. Sharma; Mark Kachmarsky; Srikant Ghantae; Michael Sorrels; Conal Deedy; Justin Clark; Skip Yeakel; Michael D. Laughlin; Charlotte Seigler; Sidney Diamond

    2007-04-30

    Class 8 heavy-duty trucks account for over three-quarters of the total diesel fuel used by commercial trucks (trucks with GVWRs more than 10,000 pounds) in the United States each year. At the highway speeds at which these trucks travel (i.e., 60 mph or greater), aerodynamic drag is a major part of total horsepower needed to move the truck down the highway, Reductions in aerodynamic drag can yield measurable benefits in fuel economy through the use of relatively inexpensive and simple devices. The goal of this project was to examine a number of aerodynamic drag reduction devices and systems and determine their effectiveness in reducing aerodynamic drag of Class 8 tractor/semitrailer combination-units, thus contributing to DOE's goal of reducing transportation petroleum use. The project team included major heavy truck manufacturers in the United States, along with the management and industry expertise of the Truck Manufacturers Association as the lead investigative organization. The Truck Manufacturers Association (TMA) is the national trade association representing the major North American manufacturers of Class 6-8 trucks (GVWRs over 19,500 lbs). Four major truck manufacturers participated in this project with TMA: Freightliner LLC; International Truck and Engine Corporation; Mack Trucks Inc.; and Volvo Trucks North America, Inc. Together, these manufacturers represent over three-quarters of total Class 8 truck sales in the United States. These four manufacturers pursued complementary research efforts as part of this project. The project work was separated into two phases conducted over a two-year period. In Phase I, candidate aerodynamic devices and systems were screened to focus research and development attention on devices that offered the most potential. This was accomplished using full-size vehicle tests, scale model tests, and computational fluid dynamics analyses. In Phase II, the most promising devices were installed on full-size trucks and their effect on

  15. Lighting

    Broader source: Energy.gov [DOE]

    One of the simplest ways to save energy and money is to switch to energy-efficient lights. Learn about your lighting choices that can save you money.

  16. Cummins Work Toward Successful Introduction of Light-Duty Clean Diesel

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Engines in US | Department of Energy Work Toward Successful Introduction of Light-Duty Clean Diesel Engines in US Cummins Work Toward Successful Introduction of Light-Duty Clean Diesel Engines in US 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_stang.pdf (109.08 KB) More Documents & Publications Cummins Light Truck Clean Diesel Cummins/DOE Light Truck Clean Diesel Engine Progress Report Cummins/DOE Light Truck Diesel Engine Progress Repor

  17. Fact #744: September 10, 2012 Average New Light Vehicle Price...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    light trucks. Source: Used vehicles - Ward's Automotive, New cars - Bureau of Economic Analysis, National Income and Product Accounts (NIPA) Underlying Detail Tables, Table 7.2.5S

  18. Heavy Truck Clean Diesel Cooperative Research Program

    SciTech Connect (OSTI)

    Milam, David

    2006-12-31

    This report is the final report for the Department of Energy on the Heavy Truck Engine Program (Contract No. DE-FC05-00OR22806) also known as Heavy Truck Clean Diesel (HTCD) Program. Originally, this was scoped to be a $38M project over 5 years, to be 50/50 co-funded by DOE and Caterpillar. The program started in June 2000. During the program the timeline was extended to a sixth year. The program completed in December 2006. The program goal was to develop and demonstrate the technologies required to enable compliance with the 2007 and 2010 (0.2g/bhph NOx, 0.01g/bhph PM) on-highway emission standards for Heavy Duty Trucks in the US with improvements in fuel efficiency compared to today's engines. Thermal efficiency improvement from a baseline of 43% to 50% was targeted.

  19. Volvo SuperTruck - Powertrain Technologies for Efficiency Improvement |

    Broader source: Energy.gov (indexed) [DOE]

    | Department of Energy Presentation given at DEER 2006, August 20-24, 2006, Detroit, Michigan. Sponsored by the U.S. DOE's EERE FreedomCar and Fuel Partnership and 21st Century Truck Programs. 2006_deer_musculus.pdf (9.8 MB) More Documents & Publications In-Cylinder Processes of EGR-Diluted Low-Load, Low-Temperature Diesel Combustion A Conceptual Model for Partially PremixedLow-Temperature Diesel Combustion Based onIn-Cylinder Laser Diagnostics and Chemical Kinetics Modeling Heavy-Duty

  20. Fuel Cell Lift Trucks: A Grocer's Best Friend | Department of...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Lift Trucks: A Grocer's Best Friend Fuel Cell Lift Trucks: A Grocer's Best Friend December 1, 2011 - 3:21pm Addthis Baldor Specialty Foods relies on fuel cell technology from Oorja ...

  1. Fact #707: December 26, 2011 Illustration of Truck Classes

    Broader source: Energy.gov [DOE]

    There are eight truck classes, categorized by the gross vehicle weight rating (GVWR) that the vehicle is assigned when it is manufactured. These categories are used by the trucking industry and...

  2. EERE Success Story-SuperTruck Initiative Partner Improves Class...

    Office of Environmental Management (EM)

    ... INFOGRAPHIC: How SuperTruck is Making Heavy Duty Vehicles More Efficient As part of the 21st Century Truck Partnership, the Army will demonstrate technology that converts waste ...

  3. Vehicle Technologies Office Merit Review 2014: SuperTruck Program...

    Broader source: Energy.gov (indexed) [DOE]

    about SuperTruck Program: Engine Project Review. ace058singh2014o.pdf (1.9 MB) More Documents & Publications Vehicle Technologies Office Merit Review 2015: SuperTruck ...

  4. Vehicle Technologies Office Merit Review 2015: SuperTruck Program...

    Broader source: Energy.gov (indexed) [DOE]

    about SuperTruck program: engine project review. ace058singh2015o.pdf (2.57 MB) More Documents & Publications Vehicle Technologies Office Merit Review 2014: SuperTruck ...

  5. NREL: Transportation Research - NREL's Complete-Cab Truck Climate...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Long-haul Class 8 trucks use approximately 7% of their fuel for rest period idling, ... 774 gallons of fuel used per truck for rest period air conditioning, with the ...

  6. SCR Systems for Heavy Duty Trucks: Progress Towards Meeting Euro...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Systems for Heavy Duty Trucks: Progress Towards Meeting Euro 4 Emission Standards in 2005 SCR Systems for Heavy Duty Trucks: Progress Towards Meeting Euro 4 Emission Standards in 2005 ...

  7. California: SQAMD Replaces Drayage Trucks with CNG | Department...

    Energy Savers [EERE]

    California: SQAMD Replaces Drayage Trucks with CNG California: SQAMD Replaces Drayage Trucks with CNG November 6, 2013 - 12:00am Addthis In 2008, the South Coast Air Quality ...

  8. Vehicle Technologies Office: 21st Century Truck Partners

    Office of Energy Efficiency and Renewable Energy (EERE)

    The 21st Century Truck Partnership is an industry-government collaboration among heavy-duty engine manufacturers, medium-duty and heavy-duty truck and bus manufacturers, heavy-duty hybrid...

  9. Manhattan Project Truck Unearthed in Recovery Act Cleanup

    Office of Environmental Management (EM)

    April 20, 2011 Remnants of 1940s military truck buried in a Manhattan Project-era landfill ... uncovered the remnants of a 1940s military truck buried in a Manhattan Project landfill. ...

  10. 21st Century Truck Partnership - Roadmap and Technical White...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    ... Electric Truck (document) 21CTP-003-A FreedomCAR and ... (DOE), the life of a diesel engine in long-haul trucks ... of a highly integrated system specifically designed to ...

  11. Norcal Prototype LNG Truck Fleet: Final Data Report

    SciTech Connect (OSTI)

    Chandler, K.; Proc, K.

    2005-02-01

    U.S. DOE and National Renewable Energy Laboratory evaluated Norcal Waste Systems liquefied natural gas (LNG) waste transfer trucks. Trucks had prototype Cummins Westport ISXG engines. Report gives final data.

  12. Nuclear Waste Partnership (NWP) Corrective Action Plan - Truck Fire and

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Radiological Release Phase I | Department of Energy - Truck Fire and Radiological Release Phase I Nuclear Waste Partnership (NWP) Corrective Action Plan - Truck Fire and Radiological Release Phase I Submittal of the Underground Salt Haul Truck Fire Corrective Action Plan and the Radiological Release Event Corrective Action Plan under Nuclear Waste Partnership LLC Contract DE-EM0001971. Nuclear Waste Partnership (NWP) Corrective Action Plan - Truck Fire and Radiological Release Phase I (4.46

  13. Alternative Fuels Data Center: Delaware Reduces Truck Idling With

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    Electrified Parking Areas Delaware Reduces Truck Idling With Electrified Parking Areas to someone by E-mail Share Alternative Fuels Data Center: Delaware Reduces Truck Idling With Electrified Parking Areas on Facebook Tweet about Alternative Fuels Data Center: Delaware Reduces Truck Idling With Electrified Parking Areas on Twitter Bookmark Alternative Fuels Data Center: Delaware Reduces Truck Idling With Electrified Parking Areas on Google Bookmark Alternative Fuels Data Center: Delaware

  14. Vehicle Technologies Office Merit Review 2014: Class 8 Truck Freight

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Efficiency Improvement Project | Department of Energy Class 8 Truck Freight Efficiency Improvement Project Vehicle Technologies Office Merit Review 2014: Class 8 Truck Freight Efficiency Improvement Project Presentation given by Daimler Truck North America LLC at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about Class 8 Truck Freight Efficiency Improvement Project. arravt080_vss_rotz_2014_o.pdf (1.59 MB) More

  15. The 21st Century Truck Partnership | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    The 21st Century Truck Partnership The 21st Century Truck Partnership 2002 DEER Conference Presentation: 2002_deer_howden.pdf (268.3 KB) More Documents & Publications 21st Century Truck Partnership Roadmap Roadmap and Technical White Papers - 21CTP-0003, December 2006 Roadmap and Technical White Papers for 21st Century Truck Partnership Vehicle Technologies Office Merit Review 2016: Annual Merit Review and Peer Evaluation Meeting

  16. Cummins SuperTruck Program - Technology Demonstration of Highly Efficient

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Clean, Diesel Powered Class 8 Trucks | Department of Energy Demonstration of Highly Efficient Clean, Diesel Powered Class 8 Trucks Cummins SuperTruck Program - Technology Demonstration of Highly Efficient Clean, Diesel Powered Class 8 Trucks Low temperature combustion at part load combined with diffusion controlled combustion at higher loads, and robust control system dynamically adjusting engine operation, maximize engine efficiency while meeting tailpipe emissions standards

  17. Other Exports by Truck out of the U.S. | Department of Energy

    Office of Environmental Management (EM)

    Truck out of the U.S. Other Exports by Truck out of the U.S. Other Exports by Truck Form (Excel) (40.5 KB) Other Exports by Truck Form (pdf) (10.88 KB) More Documents & Publications Other Exports by Rail out of the U.S. CNG Imports by Truck into the U.S. Other Imports by Truck

  18. EERE: VTO - UPS Truck PNG Image | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    EERE: VTO - UPS Truck PNG Image EERE: VTO - UPS Truck PNG Image ups_truck_18187.png (33.15 MB) More Documents & Publications EERE: VTO - Red Leaf PNG Image EERE: VTO - Hybrid Bus PNG Image Research Site Locations for Current EERE Postdoctoral Awards

  19. High Temperature Chemical Kinetic Combustion Modeling of Lightly Methylated Alkanes

    SciTech Connect (OSTI)

    Sarathy, S M; Westbrook, C K; Pitz, W J; Mehl, M

    2011-03-01

    Conventional petroleum jet and diesel fuels, as well as alternative Fischer-Tropsch (FT) fuels and hydrotreated renewable jet (HRJ) fuels, contain high molecular weight lightly branched alkanes (i.e., methylalkanes) and straight chain alkanes (n-alkanes). Improving the combustion of these fuels in practical applications requires a fundamental understanding of large hydrocarbon combustion chemistry. This research project presents a detailed high temperature chemical kinetic mechanism for n-octane and three lightly branched isomers octane (i.e., 2-methylheptane, 3-methylheptane, and 2,5-dimethylhexane). The model is validated against experimental data from a variety of fundamental combustion devices. This new model is used to show how the location and number of methyl branches affects fuel reactivity including laminar flame speed and species formation.

  20. UPS CNG Truck Fleet Final Results: Alternative Fuel Truck Evaluation Project (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2002-08-01

    This report provides transportation professionals with quantitative, unbiased information on the cost, maintenance, operational and emissions characteristics of CNG as one alternative to conventional diesel fuel for heavy-duty trucking applications.

  1. SuperTruck Initiative Partner Improves Class 8 Truck Efficiency by 115%

    Broader source: Energy.gov [DOE]

    With help from the Energy Department, Class 8 trucks recently hit a record of 12 miles per gallon (mpg) freight efficiency. This milestone is actually a 115% increase in freight efficiency (which...

  2. Volvo Trucks Manufacturing Plant in Virginia

    Broader source: Energy.gov [DOE]

    Volvo Group North America’s 1.6-million-square-foot New River Valley Plant in Dublin, Virginia, is the company’s largest truck manufacturing plant in the world. The company has implemented many energy savings solutions as part of the Better Buildings, Better Plants Challenge.

  3. System Reliability Model for Solid-State Lighting Luminaires | Department

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    of Energy Lead Performer: RTI International - Research Triangle Park, NC Partner: Auburn University - Auburn, AL DOE Total Funding: $2,848,942 Cost Share: $712,234 Project Term: September 16, 2011 - September 30, 2016 Funding Opportunity: Solid State Lighting Core Technology Funding Opportunity Announcement (DE-FOA- 0000329) Project Objective The primary objectives of the proposed work will be to develop and validate a reliability model and accelerated life testing (ALT) methodologies for

  4. Manhattan Project truck unearthed at landfill cleanup site

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Manhattan project truck Manhattan Project truck unearthed at landfill cleanup site A LANL excavation crew working on a Recovery Act cleanup project has uncovered the remnants of a 1940s military truck buried in a Manhattan Project-era landfill. April 8, 2011 image description Excavator operator Kevin Miller looks at the remnants of a 1940s military truck buried in a Manhattan Project-era landfill. Contact Fred deSousa Communications Office (505) 665-3430 Email Remnants of a 1940s military truck

  5. Vehicle Technologies Office Merit Review 2015: Volvo SuperTruck |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy SuperTruck Vehicle Technologies Office Merit Review 2015: Volvo SuperTruck Presentation given by Volvo Trucks at 2015 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about Volvo SuperTruck. vss081_amar_2015_o.pdf (2.12 MB) More Documents & Publications SuperTruck … Development and Demonstration of a Fuel-Efficient Class 8 Tractor & Trailer Vehicle Technologies Office Merit Review 2015: Volvo

  6. Fuel Economy of the Light-Duty Vehicle Fleet (released in AEO2005)

    Reports and Publications (EIA)

    2005-01-01

    The U.S. fleet of light-duty vehicles consists of cars and light trucks, including minivans, sport utility vehicles (SUVs) and trucks with gross vehicle weight less than 8,500 pounds. The fuel economy of light-duty vehicles is regulated by the (Corporate Average Fuel Economy) CAFE standards set by the National Highway Traffic Safety Administration. Currently, the CAFE standard is 27.5 miles per gallon (mpg) for cars and 20.7 mpg for light trucks. The most recent increase in the CAFE standard for cars was in 1990, and the most recent increase in the CAFE standard for light trucks was in 1996.

  7. Light self-focusing in the atmosphere: Thin window model

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Vaseva, Irina A.; Fedoruk, Mikhail P.; Rubenchik, Alexander M.; Turitsyn, Sergei K.

    2016-08-02

    Ultra-high power (exceeding the self-focusing threshold by more than three orders of magnitude) light beams from ground-based laser systems may find applications in space-debris cleaning. The propagation of such powerful laser beams through the atmosphere reveals many novel interesting features compared to traditional light self-focusing. It is demonstrated here that for the relevant laser parameters, when the thickness of the atmosphere is much shorter than the focusing length (that is, of the orbit scale), the beam transit through the atmosphere in lowest order produces phase distortion only. This means that by using adaptive optics it may be possible to eliminatemore » the impact of self-focusing in the atmosphere on the laser beam. Furthermore, the area of applicability of the proposed “thin window” model is broader than the specific physical problem considered here. For instance, it might find applications in femtosecond laser material processing.« less

  8. Two-singlet model for light cold dark matter

    SciTech Connect (OSTI)

    Abada, Abdessamad; Ghaffor, Djamal; Nasri, Salah

    2011-05-01

    We extend the standard model by adding two gauge-singlet Z{sub 2}-symmetric scalar fields that interact with visible matter only through the Higgs particle. One is a stable dark matter WIMP, and the other one undergoes a spontaneous breaking of the symmetry that opens new channels for the dark matter annihilation, hence lowering the mass of the WIMP. We study the effects of the observed dark matter relic abundance on the WIMP annihilation cross section and find that in most regions of the parameters' space, light dark matter is viable. We also compare the elastic-scattering cross section of our dark matter candidate off a nucleus with existing (CDMSII and XENON100) and projected (SuperCDMS and XENON1T) experimental exclusion bounds. We find that most of the allowed mass range for light dark matter will be probed by the projected sensitivity of the XENON1T experiment.

  9. Highway vehicle MPG and market shares report: Model year 1990

    SciTech Connect (OSTI)

    Williams, L.S. ); Hu, P.S. )

    1991-04-01

    This issue of Highway Vehicle MPG and Market Shares Report: Model Year 1990 reports the estimated sales-weighted fuel economies, sales, market shares, and other vehicle characteristics of new automobiles and light trucks. The estimates are made on a make and model basis (e.g., Chevrolet is a make and Corsica is a model), from model year 1976 to model year 1990. Vehicle sales data are used as weighting factors in the sales-weighted estimation procedure. Thus, the estimates represent averages of the overall new vehicle fleet, reflecting the composition of the fleet. Highlights are provided on the trends in the vehicle characteristics from one model year to the next. Analyses are also made on fuel economy changes to determine what caused the changes. The new automobile fleet experienced a fuel economy loss of 0.4 mpg from the previous model year, dropping to 27.6 mpg. This is the second consecutive decline in the fuel economy of new automobiles since model year 1983. The main reason for the fuel economy decline in automobiles was that the compact, midsize, and large size classes, which together claimed more than 75% of the new automobile market, each experienced fuel economy declines of 0.4 mpg or more. In contrast, the new light truck fleet showed an increase of 0.3 mpg from the previous year to a current mpg of 20.5. The fuel economy increase in light trucks was primarily due to the fact that the large pickup class, which represents 35.0% of the new 1990 light truck market experienced a gain of 0.7 mpg in its fuel economy. Overall, the sales-weighted fuel economy of the new light-duty vehicle fleet (automobiles and light trucks) dropped to 24.8 mpg in model year 1990, a reduction of 0.2 mpg from model year 1989. 9 refs., 29 figs., 55 tabs.

  10. ADOPT: A Historically Validated Light Duty Vehicle Consumer Choice Model

    SciTech Connect (OSTI)

    Brooker, A.; Gonder, J.; Lopp, S.; Ward, J.

    2015-05-04

    The Automotive Deployment Option Projection Tool (ADOPT) is a light-duty vehicle consumer choice and stock model supported by the U.S. Department of Energy’s Vehicle Technologies Office. It estimates technology improvement impacts on U.S. light-duty vehicles sales, petroleum use, and greenhouse gas emissions. ADOPT uses techniques from the multinomial logit method and the mixed logit method estimate sales. Specifically, it estimates sales based on the weighted value of key attributes including vehicle price, fuel cost, acceleration, range and usable volume. The average importance of several attributes changes nonlinearly across its range and changes with income. For several attributes, a distribution of importance around the average value is used to represent consumer heterogeneity. The majority of existing vehicle makes, models, and trims are included to fully represent the market. The Corporate Average Fuel Economy regulations are enforced. The sales feed into the ADOPT stock model. It captures key aspects for summing petroleum use and greenhouse gas emissions This includes capturing the change in vehicle miles traveled by vehicle age, the creation of new model options based on the success of existing vehicles, new vehicle option introduction rate limits, and survival rates by vehicle age. ADOPT has been extensively validated with historical sales data. It matches in key dimensions including sales by fuel economy, acceleration, price, vehicle size class, and powertrain across multiple years. A graphical user interface provides easy and efficient use. It manages the inputs, simulation, and results.

  11. DOE Requires Westinghouse to Cease Sales of Two Light Bulb Models and Allows Sale of Another

    Broader source: Energy.gov [DOE]

    As a part of DOE's continuing enforcement action against Westinghouse Lighting Corporation, the company must cease sales of two light bulb models - medium based CFL basic model 15GLOBE/65/2 ...

  12. Hydrogen Fuel Cells and Electric Forklift Trucks

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Fuel Cells and Electric Forklift Trucks Steve Medwin The Raymond Corporation December 10, 2008 Value Proposition and Fuel Cell Tax Credit * Federal fuel cell tax credit increased in "Bailout Bill" - $3000/kW or 30% of unit price whichever is less * Tax credits extended to 2016 * Has a significant impact on financial viability Sample Financial Analysis * Illustrate impact of key factors on value proposition - Tax credit - Labor rate - Battery change time - Productivity improvement *

  13. Application of Sleeper Cab Thermal Management Technologies to Reduce Idle Climate Control Loads in Long-Haul Trucks

    SciTech Connect (OSTI)

    Lustbader, J. A.; Venson, T.; Adelman, S.; Dehart, C.; Yeakel, S.; Castillo, M. S.

    2012-10-01

    Each intercity long-haul truck in the U.S. idles approximately 1,800 hrs per year, primarily for sleeper cab hotel loads. Including workday idling, over 2 billion gallons of fuel are used annually for truck idling. NREL's CoolCab project works closely with industry to design efficient thermal management systems for long-haul trucks that keep the cab comfortable with minimized engine idling and fuel use. The impact of thermal load reduction technologies on idle reduction systems were characterized by conducting thermal soak tests, overall heat transfer tests, and 10-hour rest period A/C tests. Technologies evaluated include advanced insulation packages, a solar reflective film applied to the vehicle's opaque exterior surfaces, a truck featuring both film and insulation, and a battery-powered A/C system. Opportunities were identified to reduce heating and cooling loads for long-haul truck idling by 36% and 34%, respectively, which yielded a 23% reduction in battery pack capacity of the idle-reduction system. Data were also collected for development and validation of a CoolCalc HVAC truck cab model. CoolCalc is an easy-to-use, simplified, physics-based HVAC load estimation tool that requires no meshing, has flexible geometry, excludes unnecessary detail, and is less time-intensive than more detailed computer-aided engineering modeling approaches.

  14. Solid Oxide Fuel Cell Successfully Powers Truck Cab and Sleeper in DOE-Sponsored Test

    Broader source: Energy.gov [DOE]

    In a test sponsored by the U.S. Department of Energy, a Delphi auxiliary power unit employing a solid oxide fuel cell (SOFC) successfully operated the electrical system and air conditioning of a Peterbilt Model 386 truck under conditions simulating idling conditions for 10 hours.

  15. CNG Imports by Truck into the U.S. | Department of Energy

    Office of Environmental Management (EM)

    Truck into the U.S. CNG Imports by Truck into the U.S. CNG Imports by Truck Form (Excel) (41 KB) CNG Imports by Truck Form (pdf) (14.11 KB) More Documents & Publications Other Exports by Rail out of the U.S. Other Imports by Truck into the U.S. CNG Imports by Rail

  16. Ten Years of Development Experience with Advanced Light Truck...

    Broader source: Energy.gov (indexed) [DOE]

    4 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Cummins Engines PDF icon 2004deerstang1.pdf More Documents & Publications The California Demonstration Program ...

  17. Advanced Technology Light Duty Diesel Aftertreatment System ...

    Broader source: Energy.gov (indexed) [DOE]

    Passive Catalytic Approach to Low Temperature NOx Emission Abatement Cummins' Next Generation Tier 2, Bin 2 Light Truck Diesel Engine ATP-LD; Cummins Next Generation Tier 2 Bin 2 ...

  18. Class 8 Truck Freight Efficiency Improvement Project | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    2 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting arravt080_vss_rotz_2012_o.pdf (2.58 MB) More Documents & Publications Vehicle Technologies Office Merit Review 2014: Class 8 Truck Freight Efficiency Improvement Project Class 8 Truck Freight Efficiency Improvement Project Vehicle Technologies Office Merit Review 2015: Class 8 Truck Freight Efficiency

  19. Class 8 Truck Freight Efficiency Improvement Project | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    3 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting arravt080_vss_rotz_2013_o.pdf (1.46 MB) More Documents & Publications Vehicle Technologies Office Merit Review 2015: Class 8 Truck Freight Efficiency Improvement Project Vehicle Technologies Office Merit Review 2014: Class 8 Truck Freight Efficiency Improvement Project Class 8 Truck Freight Efficiency

  20. Energy Secretary Bodman Showcases Advanced Clean Diesel and Hybrid Trucks,

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Buses | Department of Energy Showcases Advanced Clean Diesel and Hybrid Trucks, Buses Energy Secretary Bodman Showcases Advanced Clean Diesel and Hybrid Trucks, Buses May 10, 2005 - 12:45pm Addthis Says Energy Bill Essential to Develop Clean Diesel Technology WASHINGTON, D.C. - Highlighting the promise of alternative fuel trucks and buses, Secretary of Energy Samuel W. Bodman today opened an exhibition of energy-efficient, clean diesel and advanced hybrid commercial vehicles at a press

  1. Environmental Management Headquarters Corrective Action Plan - Truck Fire |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy Truck Fire Environmental Management Headquarters Corrective Action Plan - Truck Fire The purpose of this Corrective Action Plan (CAP) is to specify U.S. Department of Energy (DOE) actions for addressing Office of Environmental Management (EM) Headquarters (HQ) issues identified in the Accident Investigation Report for the Underground Salt Haul Truck Fire at the Waste Isolation Pilot Plant (WIPP) February 5, 2014. The report identified 22 Conclusions and 35 Judgments of

  2. Energy Department, Volvo Partnership Builds More Efficient Trucks and

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Manufacturing Plants | Department of Energy Department, Volvo Partnership Builds More Efficient Trucks and Manufacturing Plants Energy Department, Volvo Partnership Builds More Efficient Trucks and Manufacturing Plants January 27, 2012 - 3:00pm Addthis Washington, D.C. -Today, Acting Under Secretary of Energy Arun Majumdar joined with North Carolina Congressman Howard Coble (NC-6) to tour the Volvo Group's truck headquarters in Greensboro, North Carolina, and highlight the blueprint for an

  3. DOE Expands International Effort to Develop Fuel-Efficient Trucks |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy Expands International Effort to Develop Fuel-Efficient Trucks DOE Expands International Effort to Develop Fuel-Efficient Trucks June 30, 2008 - 2:15pm Addthis GOTHENBURG, SWEDEN - U.S. Department of Energy's (DOE) Assistant Secretary for Energy Efficiency and Renewable Energy Alexander Karsner and Volvo Group CEO Leif Johansson today agreed to expand cooperation to develop more fuel-efficient trucks. Once contractual negotiations are complete later this year, the

  4. Super Duty Diesel Truck with NOx Aftertreatment | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Super Duty Diesel Truck with NOx Aftertreatment Super Duty Diesel Truck with NOx Aftertreatment A profile of a Ford-Energy Department program to develop a three-stage aftertreatment technology, which cleans the vehicle exhaust emissions. This profile is part of the U.S. Drive 2011 Accomplishment Report. U.S. DRIVE Highlights of Technical Accomplishments 2011: Super Duty Diesel Truck with NOx Aftertreatment (246.82 KB) More Documents & Publications Development of the 2011MY Ford Super Duty

  5. Sysco Deploys Hydrogen Powered Pallet Trucks | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Sysco Deploys Hydrogen Powered Pallet Trucks Sysco Deploys Hydrogen Powered Pallet Trucks July 12, 2010 - 2:50pm Addthis Food service distribution company Sysco celebrated the grand opening of its highly efficient distribution center in June in Houston. As part of Sysco's efforts to reduce its carbon footprint, the company deployed almost 100 pallet trucks powered by fuel cells that create only water and heat as by-products. The hydrogen fuel cell project's cost was partially covered by funding

  6. Super Truck Program: Engine Project Review | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    of Energy Presents first year highlights from Detroit Diesel Corporation and Daimler Trucks, NA joint SuperTruck engine and vehicle project to demonstrate a 50 percent freight efficiency improvement deer11_sisken.pdf (2.17 MB) More Documents & Publications Super Truck Program: Engine Project Review High-Efficiency Engine Technologies Session Introduction Roadmapping Engine Technology for Post-2020 Heavy Duty Vehicles

    1 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies

  7. Vehicle Technologies Office Merit Review 2015: Class 8 Truck Freight

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Efficiency Improvement Project | Department of Energy Class 8 Truck Freight Efficiency Improvement Project Vehicle Technologies Office Merit Review 2015: Class 8 Truck Freight Efficiency Improvement Project Presentation given by DTNA at 2015 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about class 8 truck freight efficiency improvement project. arravt080_vss_rotz_2015_o.pdf (2.28 MB) More Documents & Publications

  8. Vehicle Technologies Office Merit Review 2015: Volvo SuperTruck -

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Powertrain Technologies for Efficiency Improvement | Department of Energy SuperTruck - Powertrain Technologies for Efficiency Improvement Vehicle Technologies Office Merit Review 2015: Volvo SuperTruck - Powertrain Technologies for Efficiency Improvement Presentation given by Volvo at 2015 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about Volvo SuperTruck - powertrain technologies for efficiency improvement.

  9. California Policy Stimulates Carbon Negative CNG for Heavy Duty Trucks |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy California Policy Stimulates Carbon Negative CNG for Heavy Duty Trucks California Policy Stimulates Carbon Negative CNG for Heavy Duty Trucks Describes system for fueling truck fleet with biomethane generated from anaerobic digestion of organic waste it collects p-10_edgar.pdf (364.34 KB) More Documents & Publications Advanced Natural Gas Engine Technology for Heavy Duty Vehicles Technical Workshop: Annual Merit Review Lessons Learned on Alternative Transportation

  10. Carlsbad Field Office (CBFO) Corrective Action Plan - Truck Fire and

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Radiological Release | Department of Energy Carlsbad Field Office (CBFO) Corrective Action Plan - Truck Fire and Radiological Release Carlsbad Field Office (CBFO) Corrective Action Plan - Truck Fire and Radiological Release The purpose of this Corrective Action Plan (CAP) is to specify U.S. Department of Energy (DOE) Carlsbad Field Office (CBFO) actions for addressing issues identified in the March 2014, accident investigation report for the Underground Salt Haul Truck Fire at the Waste

  11. Truck Essential Power Systems Efficiency Improvements for Medium-Duty Trucks

    SciTech Connect (OSTI)

    Larry Slone; Jeffery Birkel

    2007-12-31

    With a variety of hybrid vehicles available in the passenger car market, electric technologies and components of that scale are becoming readily available. Commercial vehicle segments have lagged behind passenger car markets, leaving opportunities for component and system development. Escalating fuel prices impact all markets and provide motivation for OEMs, suppliers, customers, and end-users to seek new techniques and technologies to deliver reduced fuel consumption. The research presented here specifically targets the medium-duty (MD), Class 4-7, truck market with technologies aimed at reducing fuel consumption. These technologies could facilitate not only idle, but also parasitic load reductions. The development efforts here build upon the success of the More Electric Truck (MET) demonstration program at Caterpillar Inc. Employing a variety of electric accessories, the MET demonstrated the improvement seen with such technologies on a Class 8 truck. The Truck Essential Power Systems Efficiency Improvements for Medium-Duty Trucks (TEPS) team scaled the concepts and successes of MET to a MD chassis. The team designed an integrated starter/generator (ISG) package and energy storage system (ESS), explored ways to replace belt and gear-driven accessory systems, and developed supervisory control algorithms to direct the usage of the generated electricity and system behavior on the vehicle. All of these systems needed to fit within the footprint of a MD vehicle and be compatible with the existing conventional systems to the largest extent possible. The overall goal of this effort was to demonstrate a reduction in fuel consumption across the drive cycle, including during idle periods, through truck electrification. Furthermore, the team sought to evaluate the benefits of charging the energy storage system during vehicle braking. The vehicle features an array of electric accessories facilitating on-demand, variable actuation. Removal of these accessories from the belt or

  12. Fabrication of A Quantum Well Based System for Truck HVAC

    Broader source: Energy.gov [DOE]

    Discusses performance differences between conventional modules and quantum well modules and details a conventional HZ-14 device, using bulk bismuth-telluride advantageous for truck HVAC applications.

  13. CoolCab Truck Testing Project Update (Presentation)

    SciTech Connect (OSTI)

    Proc, K.

    2007-10-31

    Presentation describes the CoolCab project, a DOE/NREL initiative to design efficient thermal management systems in heavy trucks to eliminate idling and reduce petroleum consumption.

  14. Emissions from Idling Trucks for Extended Time Periods | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    More Documents & Publications 21st Century Truck Partnership - Roadmap and Technical White Papers Appendix of Supporting Information - 21CTP-0003, December 2006 Technical ...

  15. HD Truck and Engine Fuel Efficiency Opportunities and Challenges...

    Broader source: Energy.gov (indexed) [DOE]

    More Documents & Publications Supertruck - Development and Demonstration of a Fuel-Efficient Class 8 Tractor & Trailer Comments of Tendril Networks Inc SuperTruck Development ...

  16. Normal Conditions of Transport Truck Test of a Surrogate Fuel...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Normal Conditions of Transport Truck Test of a Surrogate Fuel Assembly. McConnell, Paul E.; Wauneka, Robert; Saltzstein, Sylvia J.; Sorenson, Ken B. Abstract not provided. Sandia...

  17. Truck fire Corrective Action Plan submitted to Carlsbad Field...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    fire Accident Investigation Board report. On February 5, an underground mine fire involving a salt haul truck occurred in WIPP's underground mine. The DOE-appointed Accident ...

  18. NJ Compressed Natural Gas Refuse Trucks, Shuttle Buses and Infrastruct...

    Broader source: Energy.gov (indexed) [DOE]

    icon arravt051tifeinberg2011p.pdf More Documents & Publications NJ Compressed Natural Gas Refuse Trucks, Shuttle Buses and Infrastructure NJ Compressed Natural Gas Refuse ...

  19. The Role of Batteries in Auxiliary Power for Heavy Trucks

    SciTech Connect (OSTI)

    D. Crouch

    2001-12-12

    The problem that this paper deals with is that Heavy trucks leave their engines on while they are stopped and the driver is sleeping, eating, etc.

  20. Vehicle Technologies Office Merit Review 2016: Volvo SuperTruck

    Broader source: Energy.gov [DOE]

    Presentation given by Volvo Trucks at the 2016 DOE Vehicle Technologies Office and Hydrogen and Fuel Cells Program Annual Merit Review and Peer Evaluation Meeting about Vehicle Systems

  1. Vehicle Technologies Office Merit Review 2014: Cummins SuperTruck...

    Energy Savers [EERE]

    Cummins SuperTruck Program Technology and System Level Demonstration of Highly Efficient ... Program Technology and System Level Demonstration of Highly Efficient and Clean, Diesel ...

  2. NREL to Host Demonstration of Ford's Electric Ranger PU Truck

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Renewable Energy Laboratory to Host Demonstration of Ford's Electric Ranger Pickup Truck ... Media are invited to cover Ford's demonstration of the Electric Ranger at the National ...

  3. New Truck Stop Electrification Station Maps Help Truckers Reduce...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    capabilities because reducing heavy-duty truck idling is an important step in reducing ... fuels and vehicles, fuel blends, fuel economy, hybrid vehicles, and idle reduction

  4. Manhattan Project Truck Unearthed in Recovery Act Cleanup | Department...

    Broader source: Energy.gov (indexed) [DOE]

    A Los Alamos National Laboratory (LANL) excavation crew working on an American Recovery and Reinvestment Act cleanup project has uncovered the remnants of a 1940s military truck ...

  5. Nuclear Waste Partnership (NWP) Corrective Action Plan - Truck...

    Office of Environmental Management (EM)

    Nuclear Waste Partnership (NWP) Corrective Action Plan - Truck Fire and Radiological ... Corrective Action Plan under Nuclear Waste Partnership LLC Contract DE-EM0001971. ...

  6. 21st Century Truck Partnership Roadmap Roadmap and Technical...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Roadmap Roadmap and Technical White Papers - 21CTP-0003, December 2006 21st Century Truck Partnership Roadmap Roadmap and Technical White Papers - 21CTP-0003, December 2006 Report ...

  7. 21st Century Truck Partnership - Roadmap and Technical White...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    - Roadmap and Technical White Papers Appendix of Supporting Information - 21CTP-0003, December 2006 21st Century Truck Partnership - Roadmap and Technical White Papers Appendix of ...

  8. Vehicle Technologies Office - AVTA: All Electric Delivery Trucks...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    from Smith Newton all-electric delivery trucks in a variety of fleets. This research was conducted by the National Renewable Energy Laboratory (NREL). Smith Newton Vehicle ...

  9. Fact #847: November 17, 2014 Cars were Over 50% of Light Vehicle Production in 2014

    Broader source: Energy.gov [DOE]

    In 1975, cars were just over 80% of light vehicle production. From the early 1980s to 2005, light trucks were an increasing share of the light vehicles produced. The share of sport utility vehicles...

  10. UPS CNG Truck Fleet Start Up Experience: Alternative Fuel Truck Evaluation Project

    SciTech Connect (OSTI)

    Walkowicz, K.

    2001-08-14

    UPS operates 140 Freightliner Custom Chassis compressed natural gas (CNG)-powered vehicles with Cummins B5.9G engines. Fifteen are participating in the Alternative Fuel Truck Evaluation Project being funded by DOE's Office of Transportation Technologies and the Office of Heavy Vehicle Technologies.

  11. Truck Roll Stability Data Collection and Analysis

    SciTech Connect (OSTI)

    Stevens, SS

    2001-07-02

    The principal objective of this project was to collect and analyze vehicle and highway data that are relevant to the problem of truck rollover crashes, and in particular to the subset of rollover crashes that are caused by the driver error of entering a curve at a speed too great to allow safe completion of the turn. The data are of two sorts--vehicle dynamic performance data, and highway geometry data as revealed by vehicle behavior in normal driving. Vehicle dynamic performance data are relevant because the roll stability of a tractor trailer depends both on inherent physical characteristics of the vehicle and on the weight and distribution of the particular cargo that is being carried. Highway geometric data are relevant because the set of crashes of primary interest to this study are caused by lateral acceleration demand in a curve that exceeds the instantaneous roll stability of the vehicle. An analysis of data quality requires an evaluation of the equipment used to collect the data because the reliability and accuracy of both the equipment and the data could profoundly affect the safety of the driver and other highway users. Therefore, a concomitant objective was an evaluation of the performance of the set of data-collection equipment on the truck and trailer. The objective concerning evaluation of the equipment was accomplished, but the results were not entirely positive. Significant engineering apparently remains to be done before a reliable system can be fielded. Problems were identified with the trailer to tractor fiber optic connector used for this test. In an over-the-road environment, the communication between the trailer instrumentation and the tractor must be dependable. In addition, the computer in the truck must be able to withstand the rigors of the road. The major objective--data collection and analysis--was also accomplished. Using data collected by instruments on the truck, a ''bad-curve'' database can be generated. Using this database

  12. Fact #620: April 26, 2010 Class 8 Truck Tractor Weight by Component...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    0: April 26, 2010 Class 8 Truck Tractor Weight by Component Fact 620: April 26, 2010 Class 8 Truck Tractor Weight by Component A typical class 8 truck tractor weighs about 17,000 ...

  13. Fact #899: November 16, 2015 World Production of Cars and Trucks...

    Energy Savers [EERE]

    Trucks - Dataset Fact 899: November 16, 2015 World Production of Cars and Trucks - Dataset Excel file and dataset for World Production of Cars and Trucks fotw899web.xlsx More...

  14. Roadmap and Technical White Papers for 21st Century Truck Partnership...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Roadmap and Technical White Papers for 21st Century Truck Partnership Roadmap and Technical White Papers for 21st Century Truck Partnership Roadmap document for 21st Century Truck ...

  15. Rail versus truck fuel efficiency: The relative fuel efficiency of truck-competitive rail freight and truck operations compared in a range of corridors. Final report

    SciTech Connect (OSTI)

    Not Available

    1991-04-01

    The report summarizes the findings of a study to evaluate the fuel efficiency of rail freight operations relative to competing truckload service. The objective of the study was to identify the circumstances in which rail freight service offers a fuel efficiency advantage over alternative truckload options, and to estimate the fuel savings associated with using rail service. The findings are based on computer simulations of rail and truck freight movements between the same origins and destinations. The simulation input assumptions and data are based on actual rail and truck operations. Input data was provided by U.S. regional and Class I railroads and by large truck fleet operators.

  16. LNG Exports by Truck out of the U.S. Form | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Exports by Truck out of the U.S. Form LNG Exports by Truck out of the U.S. Form LNG Exports by Truck Form (Excel) (40.5 KB) LNG Exports by Truck Form (pdf) (11 KB) More Documents & Publications LNG Exports by Vessel out of the U.S. Form CNG Exports by Truck out of the U.S. Form LNG Imports by Truck into the U.S. Form

  17. Fact #671: April 18, 2011 Average Truck Speeds | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    1: April 18, 2011 Average Truck Speeds Fact #671: April 18, 2011 Average Truck Speeds The Federal Highway Administration studies traffic volume and flow on major truck routes by tracking more than 500,000 trucks. The average speed of trucks on selected interstate highways is between 50 and 60 miles per hour (mph). The average operating speed of trucks is typically below 55 mph in major urban areas, border crossings, and in mountainous terrain. The difference in average speed between peak traffic

  18. Anti-Idling Battery for Truck Applications

    SciTech Connect (OSTI)

    Keith Kelly

    2011-09-30

    In accordance to the Assistance Agreement DE-EE0001036, the objective of this project was to develop an advanced high voltage lithium-ion battery for use in an all-electric HVAC system for Class-7-8 heavy duty trucks. This system will help heavy duty truck drivers meet the tough new anti-idling laws being implemented by over 23 states. Quallion will be partnering with a major OEM supplier of HVAC systems to develop this system. The major OEM supplier will provide Quallion the necessary interface requirements and HVAC hardware to ensure successful testing of the all-electric system. At the end of the program, Quallion will deliver test data on three (3) batteries as well as test data for the prototype HVAC system. The objectives of the program are: (1) Battery Development - Objective 1 - Define battery and electronics specifications in preparation for building the prototype module. (Completed - summary included in report) and Objective 2 - Establish a functional prototype battery and characterize three batteries in-house. (Completed - photos and data included in report); (2) HVAC Development - Objective 1 - Collaborate with manufacturers to define HVAC components, layout, and electronics in preparation for establishing the prototype system. (Completed - photos and data included in report) and Objective 2 - Acquire components for three functional prototypes for use by Quallion. (Completed - photos and data included in report).

  19. CoolCalc: A Long-Haul Truck Thermal Load Estimation Tool: Preprint

    SciTech Connect (OSTI)

    Lustbader, J. A.; Rugh, J. P.; Rister, B. R.; Venson, T. S.

    2011-05-01

    In the United States, intercity long-haul trucks idle approximately 1,800 hrs annually for sleeper cab hotel loads, consuming 838 million gallons of diesel fuel per year. The objective of the CoolCab project is to work closely with industry to design efficient thermal management systems for long-haul trucks that keep the cab comfortable with minimized engine idling. Truck engine idling is primarily done to heat or cool the cab/sleeper, keep the fuel warm in cold weather, and keep the engine warm for cold temperature startup. Reducing the thermal load on the cab/sleeper will decrease air conditioning system requirements, improve efficiency, and help reduce fuel use. CoolCalc is an easy-to-use, simplified, physics-based HVAC load estimation tool that requires no meshing, has flexible geometry, excludes unnecessary detail, and is less time-intensive than more detailed computer-aided engineering modeling approaches. It is intended for rapid trade-off studies, technology impact estimation, and preliminary HVAC sizing design and to complement more detailed and expensive CAE tools by exploring and identifying regions of interest in the design space. This paper describes the CoolCalc tool, provides outdoor long-haul truck thermal testing results, shows validation using these test results, and discusses future applications of the tool.

  20. Heavy-Truck Clean Diesel (HTCD) Program | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Heavy-Truck Clean Diesel (HTCD) Program Heavy-Truck Clean Diesel (HTCD) Program 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Caterpillar 2004_deer_duffy.pdf (1.36 MB) More Documents & Publications Diesel HCCI Results at Caterpillar Diesel HCCI Results at Caterpillar Heavy-Duty HCCI Development Activities

  1. Downspeeding a Heavy-Duty Pickup Truck with a Combined Supercharger and Turbocharger Boosting System to Improve Drive Cycle Fuel Economy

    Broader source: Energy.gov [DOE]

    Discusses forward looking dynamic models developed for 6.6L diesel engine and a ¾ ton pickup truck with 8500 lb. curb weight, and validation against in-house engine and vehicle data library

  2. SuperTruck Team Achieves 115% Freight Efficiency Improvement in Class 8

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Long-Haul Truck | Department of Energy SuperTruck Team Achieves 115% Freight Efficiency Improvement in Class 8 Long-Haul Truck SuperTruck Team Achieves 115% Freight Efficiency Improvement in Class 8 Long-Haul Truck April 2, 2015 - 10:49am Addthis SuperTruck Team Achieves 115% Freight Efficiency Improvement in Class 8 Long-Haul Truck Last week, the Vehicle Technologies Office's (VTO) SuperTruck project broke another record in efficiency for Class 8 tractor-trailers. While the original

  3. SuperTruck … Development and Demonstration of a Fuel-Efficient...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    More Documents & Publications SuperTruck Development and Demonstration of a Fuel-Efficient Class 8 Tractor & Trailer SuperTruck Development and Demonstration of a ...

  4. System Reliability Model for Solid-State Lighting Luminaires...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    712,234 Project Term: 9162011 - 9302016 Funding Opportunity: Solid State Lighting Core Technology Funding Opportunity Announcement (DE-FOA- 0000329) Project Objective The ...

  5. Assessing Potential Exposure from Truck Transport of Low-level Radioactive Waste to the Nevada Test Site

    SciTech Connect (OSTI)

    J. Miller; D. Shafer; K. Gray; B. Church; S.Campbell; B. Holz

    2005-08-15

    This study has shown that, based upon measurements from industry standard radiation detection instruments, such as the RS model RSS-131 PICs in a controlled configuration, a person may be exposed to gamma radiation above background when in close proximity to some LLW trucks. However, in approximately half (47.7 percent) the population of trucks measured in this study, a person would receive no exposure above background at a distance of 1.0 m (3.3 ft) away from a LLW truck. An additional 206 trucks had net exposures greater than zero, but equal to or less than 1 {micro}R/h. Finally, nearly 80 percent of the population of trucks (802 of 1,012) had net exposures less than or equal to 10 {micro}R/h. Although there are no shipping or exposure standards at 1.0 m (3.3 ft) distance, one relevant point of comparison is the DOT shipping standard of 10 mrem/h at 2.0 m (6.6 ft) distance. Assuming a one-to-one correspondence between Roentgens and Rems, then 903 trucks (89.2 percent of the trucks measured) were no greater than one percent of the DOT standard at 1.0 m (3.3 ft). Had the distance at which the trucks been measured increased to 2.0 m (6.6 ft), the net exposure would be even less because of the increase in distance between the truck and the receptor. However, based on the empirical data from this study, the rate of decrease may be slower than for either a point or line source as was done for previous studies (Gertz, 2001; Davis et al., 2001). The highest net exposure value at 1.0 m (3.3 ft) distance, 11.9 mR/h, came from the only truck with a value greater than 10 mR/h at 1.0 m (3.3 ft) distance.

  6. Impact of Paint Color on Rest Period Climate Control Loads in Long-Haul Trucks: Preprint

    SciTech Connect (OSTI)

    Lustbader, J.; Kreutzer, C.; Jeffers, M.; Adelman, S.; Yeakel, S.; Brontz, P.; Olson, K.; Ohlinger, J.

    2014-02-01

    Cab climate conditioning is one of the primary reasons for operating the main engine in a long-haul truck during driver rest periods. In the United States, sleeper cab trucks use approximately 667 million gallons of fuel annually for rest period idling. The U.S. Department of Energy's National Renewable Energy Laboratory's (NREL) CoolCab Project works closely with industry to design efficient thermal management systems for long-haul trucks that minimize engine idling and fuel use while maintaining occupant comfort. Heat transfer to the vehicle interior from opaque exterior surfaces is one of the major heat pathways that contribute to air conditioning loads during long-haul truck daytime rest period idling. To quantify the impact of paint color and the opportunity for advanced paints, NREL collaborated with Volvo Group North America, PPG Industries, and Dometic Environmental Corporation. Initial screening simulations using CoolCalc, NREL's rapid HVAC load estimation tool, showed promising air-conditioning load reductions due to paint color selection. Tests conducted at NREL's Vehicle Testing and Integration Facility using long-haul truck cab sections, 'test bucks,' showed a 31.1% of maximum possible reduction in rise over ambient temperature and a 20.8% reduction in daily electric air conditioning energy use by switching from black to white paint. Additionally, changing from blue to an advanced color-matched solar reflective blue paint resulted in a 7.3% reduction in daily electric air conditioning energy use for weather conditions tested in Colorado. National-level modeling results using weather data from major U.S. cities indicated that the increase in heating loads due to lighter paint colors is much smaller than the reduction in cooling loads.

  7. Motor vehicle MPG and market shares report: model year 1985

    SciTech Connect (OSTI)

    Hu, P.S.

    1986-02-01

    Sales of automobiles jumped dramatically from 10,211,058 units in model year 1984 to 10,968,515 units in model year 1985, an incease of 7.4%. Light trucks had an even more striking increase in sales, rising 17.2% from the previous model year. The sales-weighted fuel economy for the entire automobile fleet continued to climb in model year 1985, from 26.3 mpg in model year 1984 to 27.0 mpg in this model year. The sales-weighted fuel economies in light trucks have remained relatively constant since model year 1979. The trends of various vehicle characteristics from model year 1978 through 1985 are illustrated. 34 figs., 45 tabs.

  8. Like no other, Kemmerer keeps on trucking

    SciTech Connect (OSTI)

    Buchsbaum, L.

    2008-03-15

    Despite its unique challenges, production at Chevron Mining's western Wyoming mine is increasing. The 1,200 foot deep pits consecutively terrace down (more similar to the open pits used in hard rock mining), exposing multiple splitting seams of varying coal qualities. The seams dip from 17 to 22{sup o} and vary in thickness from five to 80 feet or more. Generally three different pits, all of changing coal properties, are worked. The coal is blended to meet specific specifications. The article describes operations at the mine and its transport, once blended, to the nearby Naughton power station or by haul truck to the Elkol tipple. Employment at the mine, with its good safety record, is discussed.

  9. System Reliability Model for Solid-State Lighting Luminaires | Department

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    of Energy Presenter: Lynn Davis, RTI International This project is developing and validating a probabilistic reliability prediction tool, and accelerated life testing methodologies, to help lighting manufacturers and stakeholders answer two questions: (1) How can the promised reliability for a rapidly changing technology platform be ensured?, and (2) What will the usage and maintenance profiles be for a product that lasts 15 years? Solid-state lighting (SSL) is described as being highly

  10. Long-Haul Truck Idling Burns Up Profits

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    Long-Haul Truck Idling Burns Up Profits Long-haul truck drivers perform a vitally important service. In the course of their work, they must take rest periods as required by federal law. Most drivers remain in their trucks, which they keep running to provide power for heating, cooling, and other necessities. Such idling, however, comes at a cost; it is an expensive and polluting way to keep drivers safe and comfortable. Increasingly affordable alternatives to idling not only save money and reduce

  11. Fact #626: June 7, 2010 Fuel Economy for Light and Heavy Vehicles |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy 6: June 7, 2010 Fuel Economy for Light and Heavy Vehicles Fact #626: June 7, 2010 Fuel Economy for Light and Heavy Vehicles In the next few years it is expected that fuel economy standards will be imposed on new medium and heavy trucks sold in the U.S. Currently, the estimates of the medium and heavy truck population range from a high of 15 miles per gallon (mpg) for class 2b trucks to a low of 2.5 mpg for class 8a trucks. The chart below shows the range of fuel economy

  12. Heavy-Duty Truck Engine: 2007 Emissions with Excellent Fuel Economy

    Broader source: Energy.gov [DOE]

    2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Cummins Inc. Heavy-Duty Truck Engine Program

  13. Heavy standard model-like Higgs boson and a light stop fromYukawa...

    Office of Scientific and Technical Information (OSTI)

    Heavy standard model-like Higgs boson and a light stop from Yukawa-deflected gauge mediation Citation Details In-Document Search Title: Heavy standard model-like Higgs boson and a ...

  14. The Increasing Role of Diesel Trucks in National Petroleum Use...

    Broader source: Energy.gov (indexed) [DOE]

    Presentation given at DEER 2006, August 20-24, 2006, Detroit, Michigan. Sponsored by the U.S. DOE's EERE FreedomCar and Fuel Partnership and 21st Century Truck Programs. ...

  15. Emission Controls for Heavy-Duty Trucks | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    Presentation given at DEER 2006, August 20-24, 2006, Detroit, Michigan. Sponsored by the U.S. DOE's EERE FreedomCar and Fuel Partnership and 21st Century Truck Programs. ...

  16. NREL Highlight: Truck Platooning Testing; NREL (National Renewable Energy Laboratory)

    SciTech Connect (OSTI)

    2015-05-21

    NREL's fleet test and evaluation team assesses the fuel savings potential of semi-automated truck platooning of line-haul sleeper cabs with modern aerodynamics. Platooning reduces aerodynamic drag by grouping vehicles together and safely decreasing the distance between them via electronic coupling, which allows multiple vehicles to accelerate or brake simultaneously. In 2014, the team conducted track testing of three SmartWay tractor - two platooned tractors and one control tractor—at varying steady-state speeds, following distances, and gross vehicle weights. While platooning improved fuel economy at all speeds, travel at 55 mph resulted in the best overall miles per gallon. The lead truck demonstrated fuel savings up to 5.3% while the trailing truck saved up to 9.7%. A number of conditions impact the savings attainable, including ambient temperature, distance between lead and trailing truck, and payload weight. Future studies may look at ways to optimize system fuel efficiency and emissions reductions.

  17. Dual-Fuel Truck Fleet: Start-Up Experience

    SciTech Connect (OSTI)

    NREL

    1998-09-30

    Although dual-fuel engine technology has been in development and limited use for several years, it has only recently moved toward full-scale operational capability for heavy-duty truck applications. Unlike a bifuel engine, which has two separate fuel systems that are used one at a time, a dual-fuel engine uses two fuel systems simultaneously. One of California's South Coast Air Quality Management District (SCAQMD) current programs is a demonstration of dual-fuel engine technology in heavy-duty trucks. These trucks are being studied as part of the National Renewable Energy Laboratory's (NREL's) Alternative Fuel Truck Program. This report describes the start-up experience from the program.

  18. ATVM Loans Help Boost Pickup Truck Efficiency | Department of...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    "The pickup truck is very much a part of Americana," says Ed Kim, vice president of industry analysis at the research firm AutoPacific. "It's connected with the idea of a man going ...

  19. Fuel economy and emissions reduction of HD hybrid truck over...

    Broader source: Energy.gov (indexed) [DOE]

    Compares simulated fuel economy and emissions fro conventional and hybrid Class 8 heavy trucks p-12gao.pdf (345.05 KB) More Documents & Publications Advanced HD Engine Systems and ...

  20. National Academy of Sciences Reviews 21st Century Truck Partnership...

    Broader source: Energy.gov (indexed) [DOE]

    For more than 15 years, the 21st Century Truck Partnership ... America's medium and heavy-duty vehicles to safely and ... proposed expansion of the hybrid team's scope to "lead to ...

  1. Company Adds Commercial Trucks to List of Hybrids

    Broader source: Energy.gov [DOE]

    Allison's bus hybrid drive unit for transit buses can be found in 164 cities around the world. The company will use similar technology in the commercial truck hybrid system.

  2. Alternative Fuels Data Center: Electric Trucks Deliver at Kansas...

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    ... Regional Heavy-Duty LNG Fueling Station March 21, 2015 Photo of a street sweeper New Hampshire Fleet Revs up With Natural Gas March 7, 2015 Photo of a truck pulling into a CNG ...

  3. EERE Success Story-California: SQAMD Replaces Drayage Trucks...

    Energy Savers [EERE]

    ... converted its fleet of heavy-duty trucks to run on liquefied natural gas (LNG) and built the first LNG station east of the Mississippi River with help from the Energy Department's ...

  4. Volvo Trucks Achieves Lofty Energy and Carbon Goals

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    facility achieves plant-wide targets that surpass both corporate and Save Energy Now goals; leverages company and ITP resources The New River Valley (NRV) plant is Volvo Trucks'-a ...

  5. Alternative Fuels Data Center: Natural Gas Powers Milk Delivery Trucks in

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    Indiana Natural Gas Powers Milk Delivery Trucks in Indiana to someone by E-mail Share Alternative Fuels Data Center: Natural Gas Powers Milk Delivery Trucks in Indiana on Facebook Tweet about Alternative Fuels Data Center: Natural Gas Powers Milk Delivery Trucks in Indiana on Twitter Bookmark Alternative Fuels Data Center: Natural Gas Powers Milk Delivery Trucks in Indiana on Google Bookmark Alternative Fuels Data Center: Natural Gas Powers Milk Delivery Trucks in Indiana on Delicious Rank

  6. Six Manufacturers to Offer Natural-Gas-Powered Trucks in 1996

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    ix truck manufacturers will offer natural-gas-powered versions of their medium- and heavy-duty trucks in 1996, according to the Gas Research Institute (GRI). The trucks will be the first fully dedicated natural gas vehicles (NGVs) offered in U.S. medium- and heavy-duty markets by original equipment manufacturers (OEMs). Four manufacturers will design trucks to operate on liquefied natural gas (LNG), and one manufacturer will design trucks to run on compressed natural gas (CNG). These

  7. Vehicle Technologies Office Merit Review 2014: Cummins SuperTruck Program

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Technology and System Level Demonstration of Highly Efficient and Clean, Diesel Powered Class 8 Trucks | Department of Energy Cummins SuperTruck Program Technology and System Level Demonstration of Highly Efficient and Clean, Diesel Powered Class 8 Trucks Vehicle Technologies Office Merit Review 2014: Cummins SuperTruck Program Technology and System Level Demonstration of Highly Efficient and Clean, Diesel Powered Class 8 Trucks Presentation given by Cummins Inc. at 2014 DOE Hydrogen and

  8. LNG Imports by Truck into the U.S. Form | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Imports by Truck into the U.S. Form LNG Imports by Truck into the U.S. Form LNG Imports by Truck Form (Excel) (41 KB) LNG Imports by Truck Form (pdf) (14.14 KB) More Documents & Publications LNG Imports by Vessel into the U.S. Form LNG Exports by Truck out of the U.S. Form LNG Imports by Rail into the U.S.

  9. Normal Conditions of Transport Truck Test of a Surrogate Fuel Assembly |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy Normal Conditions of Transport Truck Test of a Surrogate Fuel Assembly Normal Conditions of Transport Truck Test of a Surrogate Fuel Assembly This report describes a test of an instrumented surrogate PWR fuel assembly on a truck trailer conducted to simulate normal conditions of truck transport. The purpose of the test was to measure strains and accelerations on a Zircaloy-4 fuel rod during the transport of the assembly on the truck. This test complements tests conducted

  10. Vehicle Technologies Office Merit Review 2015: Cummins SuperTruck Program

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Technology and System Level Demonstration of Highly Efficient and Clean, Diesel Powered Class 8 Trucks | Department of Energy Cummins SuperTruck Program Technology and System Level Demonstration of Highly Efficient and Clean, Diesel Powered Class 8 Trucks Vehicle Technologies Office Merit Review 2015: Cummins SuperTruck Program Technology and System Level Demonstration of Highly Efficient and Clean, Diesel Powered Class 8 Trucks Presentation given by Cummins at 2015 DOE Hydrogen and Fuel

  11. CNG Exports by Truck out of the U.S. Form | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    CNG Exports by Truck out of the U.S. Form CNG Exports by Truck out of the U.S. Form CNG Exports by Truck Form (Excel) (40.5 KB) CNG Exports by Truck Form (pdf) (10.89 KB) More Documents & Publications LNG Exports by Truck out of the U.S. Form LNG Exports by Vessel out of the U.S. Form LNG Exports by Vessel in ISO Containers out of the U.S. Form

  12. High Fuel Economy Heavy-Duty Truck Engine | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Fuel Economy Heavy-Duty Truck Engine High Fuel Economy Heavy-Duty Truck Engine 2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation ace060_tai_2011_o.pdf (434.09 KB) More Documents & Publications Volvo SuperTruck - Powertrain Technologies for Efficiency Improvement Vehicle Technologies Office Merit Review 2016: Volvo SuperTruck - Powertrain Technologies for Efficiency Improvement SuperTruck Program: Engine Project Review

  13. CoolCab Truck Thermal Load Reduction | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Truck Thermal Load Reduction CoolCab Truck Thermal Load Reduction 2009 DOE Hydrogen Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting, May 18-22, 2009 -- Washington D.C. vssp_09_proc.pdf (2.28 MB) More Documents & Publications CoolCab Test and Evaluation CoolCab Thermal Load Reduction Project: CoolCalc HVAC Tool Development CoolCab Test and Evaluation and

  14. Vehicle Technologies Office: Lightweight Materials for Cars and Trucks |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy Lightweight Materials for Cars and Trucks Vehicle Technologies Office: Lightweight Materials for Cars and Trucks PBS's Motorweek highlights the research and development on lightweight materials supported by the Vehicle Technologies Office at Oak Ridge National Laboratory. Read the text version. Advanced materials are essential for boosting the fuel economy of modern automobiles while maintaining safety and performance. Because it takes less energy to accelerate a lighter

  15. Shorepower Truck Electrification Project (STEP) - Cumulative through June 2014

    SciTech Connect (OSTI)

    2014-08-01

    The Fleet Test and Evaluation Team at the U.S. Department of Energy's National Renewable Energy Laboratory is evaluating and documenting the use of shorepower at 50 planned American Recovery and Reinvestment Act (ARRA)-funded truck stop electrification (TSE) sites across the nation. Trucks participating in the study have idle-reduction equipment installed that was purchased with rebates through the ARRA. A total of 5,000 rebates will be approved.

  16. Shorepower Truck Electrification Project (STEP) - Cumulative through February 2015

    SciTech Connect (OSTI)

    2015-02-01

    The Fleet Test and Evaluation Team at the U.S. Department of Energy's National Renewable Energy Laboratory is evaluating and documenting the use of shorepower at 50 planned American Recovery and Reinvestment Act (ARRA)-funded truck stop electrification sites across the nation. Trucks participating in the study have idle-reduction equipment installed that was purchased with rebates through the ARRA. A total of 5,000 rebates will be approved.

  17. Shorepower Truck Electrification Project (STEP) - 2013 (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2014-01-01

    The Fleet Test and Evaluation Team at the U.S. Department of Energy's National Renewable Energy Laboratory (NREL) is evaluating and documenting the use of shorepower at 50 planned American Recovery and Reinvestment Act (ARRA)-funded truck stop electrification sites across the nation. Trucks participating in the study have idle-reduction equipment installed that was purchased with rebates through the ARRA. A total of 5,000 rebates will be approved.

  18. Parametric study of radiation dose rates from rail and truck spent fuel transport casks

    SciTech Connect (OSTI)

    Parks, C.V.; Hermann, O.W.; Knight, J.R.

    1985-08-01

    Neutron and gamma dose rates from typical rail and truck spent fuel transport casks are reported for a variety of spent PWR fuel sources and cask conditions. The IF 300 rail cask and NLI 1/2 truck cask were selected for use as appropriate cask models. All calculations (cross section preparation, generation of spent fuel source terms, radiation transport calculations, and dose evaluation) were performed using various modules of the SCALE computational system. Conditions or parameters for which there were variations between cases include: detector distance from cask, spent fuel cooling time, the setting of fuel or neutron shielding cavities to either wet or dry, the cobalt content of assembly materials, normal fuel assemblies and consolidated cannisters, the geometry mesh interval size, and the order of the angular quadrature set. 13 refs., 6 figs., 9 tabs.

  19. Liquefied Natural Gas for Trucks and Buses

    SciTech Connect (OSTI)

    James Wegrzyn; Michael Gurevich

    2000-06-19

    Liquefied natural gas (LNG) is being developed as a heavy vehicle fuel. The reason for developing LNG is to reduce our dependency on imported oil by eliminating technical and costs barriers associated with its usage. The U.S. Department of Energy (DOE) has a program, currently in its third year, to develop and advance cost-effective technologies for operating and refueling natural gas-fueled heavy vehicles (Class 7-8 trucks). The objectives of the DOE Natural Gas Vehicle Systems Program are to achieve market penetration by reducing vehicle conversion and fuel costs, to increase consumer acceptance by improving the reliability and efficiency, and to improve air quality by reducing tailpipe emissions. One way to reduce fuel costs is to develop new supplies of cheap natural gas. Significant progress is being made towards developing more energy-efficient, low-cost, small-scale natural gas liquefiers for exploiting alternative sources of natural gas such as from landfill and remote gas sites. In particular, the DOE program provides funds for research and development in the areas of; natural gas clean up, LNG production, advanced vehicle onboard storage tanks, improved fuel delivery systems and LNG market strategies. In general, the program seeks to integrate the individual components being developed into complete systems, and then demonstrate the technology to establish technical and economic feasibility. The paper also reviews the importance of cryogenics in designing LNG fuel delivery systems.

  20. Sleeper Cab Climate Control Load Reduction for Long-Haul Truck Rest Period Idling

    SciTech Connect (OSTI)

    Lustbader, J. A.; Kreutzer, C.; Adelman, S.; Yeakel, S.; Zehme, J.

    2015-04-29

    Annual fuel use for long-haul truck rest period idling is estimated at 667 million gallons in the United States. The U.S. Department of Energy’s National Renewable Energy Laboratory’s CoolCab project aims to reduce heating, ventilating, and air conditioning (HVAC) loads and resulting fuel use from rest period idling by working closely with industry to design efficient long-haul truck climate control systems while maintaining occupant comfort. Enhancing the thermal performance of cab/sleepers will enable smaller, lighter, and more cost-effective idle reduction solutions. In order for candidate idle reduction technologies to be implemented at the original equipment manufacturer and fleet level, their effectiveness must be quantified. To address this need, a number of promising candidate technologies were evaluated through experimentation and modeling to determine their effectiveness in reducing rest period HVAC loads. For this study, load reduction strategies were grouped into the focus areas of solar envelope, occupant environment, and conductive pathways. The technologies selected for a complete-cab package of technologies were “ultra-white” paint, advanced insulation, and advanced curtains. To measure the impact of these technologies, a nationally-averaged solar-weighted reflectivity long-haul truck paint color was determined and applied to the baseline test vehicle. Using the complete-cab package of technologies, electrical energy consumption for long-haul truck daytime rest period air conditioning was reduced by at least 35% for summer weather conditions in Colorado. The National Renewable Energy Laboratory's CoolCalc model was then used to extrapolate the performance of the thermal load reduction technologies nationally for 161 major U.S. cities using typical weather conditions for each location over an entire year.

  1. Medium Truck Duty Cycle Data from Real-World Driving Environments: Final Report

    SciTech Connect (OSTI)

    Lascurain, Mary Beth; Franzese, Oscar; Capps, Gary J; Siekmann, Adam; Thomas, Neil; LaClair, Tim J; Barker, Alan M; Knee, Helmut E

    2012-11-01

    Since the early part of the 20th century, the US trucking industry has provided a safe and economical means of moving commodities across the country. At present, nearly 80% of US domestic freight movement involves the use of trucks. The US Department of Energy (DOE) is spearheading a number of research efforts to improve heavy vehicle fuel efficiencies. This includes research in engine technologies (including hybrid and fuel cell technologies), lightweight materials, advanced fuels, and parasitic loss reductions. In addition, DOE is developing advanced tools and models to support heavy vehicle research and is leading the 21st Century Truck Partnership and the SuperTruck development effort. Both of these efforts have the common goal of decreasing the fuel consumption of heavy vehicles. In the case of SuperTruck, a goal of improving the overall freight efficiency of a combination tractor-trailer has been established. This Medium Truck Duty Cycle (MTDC) project is a critical element in DOE s vision for improved heavy vehicle energy efficiency; it is unique in that there is no other existing national database of characteristic duty cycles for medium trucks based on collecting data from Class 6 and 7 vehicles. It involves the collection of real-world data on medium trucks for various situational characteristics (e.g., rural/urban, freeway/arterial, congested/free-flowing, good/bad weather) and looks at the unique nature of medium trucks drive cycles (stop-and-go delivery, power takeoff, idle time, short-radius trips). This research provides a rich source of data that can contribute to the development of new tools for FE and modeling, provide DOE a sound basis upon which to make technology investment decisions, and provide a national archive of real-world-based medium-truck operational data to support energy efficiency research. The MTDC project involved a two-part field operational test (FOT). For the Part-1 FOT, three vehicles each from two vocations (urban transit and

  2. Assessment of the risk of transporting propane by truck and train

    SciTech Connect (OSTI)

    Geffen, C.A.

    1980-03-01

    The risk of shipping propane is discussed and the risk assessment methodology is summarized. The risk assessment model has been constructed as a series of separate analysis steps to allow the risk to be readily reevaluated as additional data becomes available or as postulated system characteristics change. The transportation system and accident environment, the responses of the shipping system to forces in transportation accidents, and release sequences are evaluated to determine both the likelihood and possible consequences of a release. Supportive data and analyses are given in the appendices. The risk assessment results are related to the year 1985 to allow a comparison with other reports in this series. Based on the information presented, accidents involving tank truck shipments of propane will be expected to occur at a rate of 320 every year; accidents involving bobtails would be expected at a rate of 250 every year. Train accidents involving propane shipments would be expected to occur at a rate of about 60 every year. A release of any amount of material from propane trucks, under both normal transportation and transport accident conditions, is to be expected at a rate of about 110 per year. Releases from propane rail tank cars would occur about 40 times a year. However, only those releases that occur during a transportation accident or involve a major tank defect will include sufficient propane to present the potential for danger to the public. These significant releases can be expected at the lower rate of about fourteen events per year for truck transport and about one event every two years for rail tank car transport. The estimated number of public fatalities resulting from these significant releases in 1985 is fifteen. About eleven fatalities per year result from tank truck operation, and approximately half a death per year stems from the movement of propane in rail tank cars.

  3. Modeling of coherent ultrafast magneto-optical experiments: Light-induced molecular mean-field model

    SciTech Connect (OSTI)

    Hinschberger, Y.; Hervieux, P.-A.

    2015-12-28

    We present calculations which aim to describe coherent ultrafast magneto-optical effects observed in time-resolved pump-probe experiments. Our approach is based on a nonlinear semi-classical Drude-Voigt model and is used to interpret experiments performed on nickel ferromagnetic thin film. Within this framework, a phenomenological light-induced coherent molecular mean-field depending on the polarizations of the pump and probe pulses is proposed whose microscopic origin is related to a spin-orbit coupling involving the electron spins of the material sample and the electric field of the laser pulses. Theoretical predictions are compared to available experimental data. The model successfully reproduces the observed experimental trends and gives meaningful insight into the understanding of magneto-optical rotation behavior in the ultrafast regime. Theoretical predictions for further experimental studies are also proposed.

  4. Vehicle Technologies Office Merit Review 2015: Modeling for Light and Heavy Vehicle Market Analysis

    Office of Energy Efficiency and Renewable Energy (EERE)

    Presentation given by Energetics at 2015 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about modeling for light and heavy...

  5. Gamma-ray burst prompt emission light curves and power density spectra in the ICMART model

    SciTech Connect (OSTI)

    Zhang, Bo [School of Astronomy and Space Science, Nanjing University, Nanjing 210093 (China); Zhang, Bing, E-mail: bozhang@physics.unlv.edu, E-mail: zhang@physics.unlv.edu [Department of Physics and Astronomy, University of Nevada Las Vegas, Las Vegas, NV 89154 (United States)

    2014-02-20

    In this paper, we simulate the prompt emission light curves of gamma-ray bursts (GRBs) within the framework of the Internal-Collision-induced MAgnetic Reconnection and Turbulence (ICMART) model. This model applies to GRBs with a moderately high magnetization parameter ? in the emission region. We show that this model can produce highly variable light curves with both fast and slow components. The rapid variability is caused by many locally Doppler-boosted mini-emitters due to turbulent magnetic reconnection in a moderately high ? flow. The runaway growth and subsequent depletion of these mini-emitters as a function of time define a broad slow component for each ICMART event. A GRB light curve is usually composed of multiple ICMART events that are fundamentally driven by the erratic GRB central engine activity. Allowing variations of the model parameters, one is able to reproduce a variety of light curves and the power density spectra as observed.

  6. Municipal Consortium Releases Updated Model Specification for Networked Outdoor Lighting Control Systems

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy's Municipal Solid-State Street Lighting Consortium (MSSLC) has released an update to its Model Specification for Adaptive Control and Remote Monitoring of LED Roadway...

  7. Motor vehicle MPG and market shares report: model year 1984

    SciTech Connect (OSTI)

    Hu, P.S.; Holcomb, M.C.

    1985-01-01

    This issue of the publication reports the sales, market shares, estimated sales-weighted fuel economies, and other estimated sales-weighted vehicle characteristics of automobiles and light trucks for the model year 1984 and for the previous five model years. Comparisons and observations are made on the trends in these vehicles from one model year to the next. An improved methodology is used to allocate the yearly MPG changes among eight components, rather than the four reported in the previous reports. Sales of automobiles showed an increase of 16.6% from model year 1983. An even more striking increase was observed in the sales of light trucks: 30.5% from model year 1983. The 1984 model year experienced a gain of 0.23 mpg in sales-weighted automobile fuel economy. In contrast, light trucks experienced a loss of 0.59 mpg in fuel economy, from 20.50 mpg in model year 1983 to 19.91 mpg in model year 1984.

  8. World's First Fuel Cell Cargo Trucks Deployed at U.S. Airport | Department

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    of Energy World's First Fuel Cell Cargo Trucks Deployed at U.S. Airport World's First Fuel Cell Cargo Trucks Deployed at U.S. Airport June 10, 2015 - 1:30pm Addthis World's First Fuel Cell Cargo Trucks Deployed at U.S. Airport World's First Fuel Cell Cargo Trucks Deployed at U.S. Airport World's First Fuel Cell Cargo Trucks Deployed at U.S. Airport World's First Fuel Cell Cargo Trucks Deployed at U.S. Airport Sunita Satyapal Director, Fuel Cell Technologies Office What looks like a golf cart

  9. Acceptance test report for core sample trucks 3 and 4

    SciTech Connect (OSTI)

    Corbett, J.E.

    1996-04-10

    The purpose of this Acceptance Test Report is to provide documentation for the acceptance testing of the rotary mode core sample trucks 3 and 4, designated as HO-68K-4600 and HO-68K-4647, respectively. This report conforms to the guidelines established in WHC-IP-1026, ``Engineering Practice Guidelines,`` Appendix M, ``Acceptance Test Procedures and Reports.`` Rotary mode core sample trucks 3 and 4 were based upon the design of the second core sample truck (HO-68K-4345) which was constructed to implement rotary mode sampling of the waste tanks at Hanford. Successful completion of acceptance testing on June 30, 1995 verified that all design requirements were met. This report is divided into four sections, beginning with general information. Acceptance testing was performed on trucks 3 and 4 during the months of March through June, 1995. All testing was performed at the ``Rock Slinger`` test site in the 200 West area. The sequence of testing was determined by equipment availability, and the initial revision of the Acceptance Test Procedure (ATP) was used for both trucks. Testing was directed by ICF-KH, with the support of WHC Characterization Equipment Engineering and Characterization Project Operations. Testing was completed per the ATP without discrepancies or deviations, except as noted.

  10. Current Transportation Models Used in the Vehicle Technologies Program

    SciTech Connect (OSTI)

    2009-04-06

    A summary of various transportation models (VISION, TRUCK, GREET, Oil Peaking Model, Feebate Model, Oil Security Metrics Model, ORNL PHEV Choice Model: Version 1, PSAT, PSAT-PRO,

  11. Shorepower Truck Electrification Project (STEP) - 1Q - 2Q 2013

    SciTech Connect (OSTI)

    2014-02-01

    The Fleet Test and Evaluation Team at the U.S. Department of Energy's National Renewable Energy Laboratory is evaluating and documenting the use of shorepower at 50 planned American Recovery and Reinvestment Act (ARRA)-funded truck stop electrification (TSE) sites across the nation. Trucks participating in the study have idle-reduction equipment installed that was purchased with rebates through the ARRA. A total of 5,000 rebates will be approved. the ARRA. A total of 5,000 rebates will be approved.

  12. Long-Haul Truck Idling Burns Up Profits

    SciTech Connect (OSTI)

    2015-08-12

    Long-haul truck drivers perform a vitally important service. In the course of their work, they must take rest periods as required by federal law. Most drivers remain in their trucks, which they keep running to provide power for heating, cooling, and other necessities. Such idling, however, comes at a cost; it is an expensive and polluting way to keep drivers safe and comfortable. Increasingly affordable alternatives to idling not only save money and reduce pollution, but also help drivers get a better night's rest.

  13. A rigorous treatment of a follow-the-leader traffic model with traffic lights present

    SciTech Connect (OSTI)

    Argall, Brenna; Cheleshkin, Eugene; Greenberg, J.M.; Hinde, Colin; Lin, Pei-Jen

    2003-07-16

    Traffic flow on a unidirectional roadway in the presence of traffic lights is modeled. Individual car responses to green, yellow, and red lights are postulated and these result in rules governing the acceleration and deceleration of individual cars. The essence of the model is that only specific cars are directly affected by the lights. The other cars behave according to simple follow-the-leader rules which limit their speed by the spacing between it and the car directly ahead. The model has a number of desirable properties; namely cars do not run red lights, cars do not smash into one another, and cars exhibit no velocity reversals. In a situation with multiple lights operating in-phase we get, after an initial startup period, a constant number of cars through each light during any green-yellow period. Moreover, this flux is less by one or two cars per period than the flux obtained in discretized versions of the idealized Lighthill, Whitham, Richards model which allows for infinite accelerations.

  14. Roadmap and technical white papers for the 21st century truck partnership

    SciTech Connect (OSTI)

    None, None

    2006-12-01

    21st Century Truck Partnership will support the development and implementation of technologies that will cut fuel use and emissions and enhance safety, affordability, and performance of trucks and buses.

  15. Fuels of the Future for Cars and Trucks | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    of the Future for Cars and Trucks Fuels of the Future for Cars and Trucks 2002 DEER Conference Presentation: U.S. Department of Energy PDF icon 2002deereberhardt.pdf More...

  16. Non-uniform Aging on Super Duty Diesel Truck Aged Urea Cu/Zeolite...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Aging on Super Duty Diesel Truck Aged Urea CuZeolite SCR Catalysts Non-uniform Aging on Super Duty Diesel Truck Aged Urea CuZeolite SCR Catalysts CuZeolite SCR catalysts aged ...

  17. Real-World Greenhouse Gas Emissions from a MY2010 Diesel Truck...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Real-World Greenhouse Gas Emissions from a MY2010 Diesel Truck Traveling Across the Continental United States Real-World Greenhouse Gas Emissions from a MY2010 Diesel Truck ...

  18. SuperTruck … Development and Demonstration of a Fuel-Efficient...

    Energy Savers [EERE]

    SuperTruck Development and Demonstration of a Fuel-Efficient Class 8 Tractor & Trailer SuperTruck Development and Demonstration of a Fuel-Efficient Class 8 Tractor & Trailer ...

  19. Alternative Fuels Data Center: Saving Fuel in the Garden State with Truck

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    Stop Electrification Saving Fuel in the Garden State with Truck Stop Electrification to someone by E-mail Share Alternative Fuels Data Center: Saving Fuel in the Garden State with Truck Stop Electrification on Facebook Tweet about Alternative Fuels Data Center: Saving Fuel in the Garden State with Truck Stop Electrification on Twitter Bookmark Alternative Fuels Data Center: Saving Fuel in the Garden State with Truck Stop Electrification on Google Bookmark Alternative Fuels Data Center:

  20. Daimler's SuperTruck Program; 50% Brake Thermal Efficiency | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Energy Daimler's SuperTruck Program; 50% Brake Thermal Efficiency Daimler's SuperTruck Program; 50% Brake Thermal Efficiency Presents highlights of engine and vehicle advances made, and progress towards achieving aggressive goals deer12_sisken.pdf (2.38 MB) More Documents & Publications Vehicle Technologies Office Merit Review 2015: SuperTruck Program: Engine Project Review SuperTruck Program: Engine Project Review Supertruck - Improving Transportation Efficiency through Integrated

  1. Firm Uses DOE's Fastest Supercomputer to Streamline Long-Haul Trucks

    DOE R&D Accomplishments [OSTI]

    2011-03-28

    Sophisticated simulation on the world's fastest computer for science makes trucks more aerodynamic, saves fuel, helps environment.

  2. Appendix of Supporting Information for the 21st Century Truck Technology Partnership

    SciTech Connect (OSTI)

    2009-01-18

    Appendix contains supporting information to the 21st Century Truck Partnership's Roadmap and Technical White Papers (21CTP-003)

  3. Fact #932: July 4, 2016 Longer Combination Trucks Are Only Permitted on

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Some Routes - Dataset | Department of Energy 2: July 4, 2016 Longer Combination Trucks Are Only Permitted on Some Routes - Dataset Fact #932: July 4, 2016 Longer Combination Trucks Are Only Permitted on Some Routes - Dataset Excel file and dataset for Longer Combination Trucks Are Only Permitted on Some Routes fotw#932_web.xlsx (198.09 KB) More Documents & Publications Fact #929: June 13, 2016 Heavy Truck Speed Limits Are Inconsistent - Dataset Fact #923: May 2, 2016 Cylinder

  4. Project Startup: Evaluating Coca-Cola's Class 8 Hybrid-Electric Delivery Trucks (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2011-03-01

    Fact sheet describing the project startup for evaluating Coca-Cola's Class 8 hybrid-electric delivery trucks.

  5. DOE Announces $80 Million in Funding to Increase SuperTruck Efficiency |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy Announces $80 Million in Funding to Increase SuperTruck Efficiency DOE Announces $80 Million in Funding to Increase SuperTruck Efficiency March 1, 2016 - 2:59pm Addthis News release from the Department of Energy WASHINGTON - Building on the notable successes of the SuperTruck initiative, Deputy Assistant Secretary for Transportation Reuben Sarkar today announced SuperTruck II, an $80 million funding opportunity, subject to congressional appropriations, for research,

  6. Volvo Trucks Achieves Lofty Energy and Carbon Goals | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Volvo Trucks Achieves Lofty Energy and Carbon Goals Volvo Trucks Achieves Lofty Energy and Carbon Goals This case study describes how Volvo Truck's New River Valley facility in Dublin, Virgina, was able to achieve plant-wide targets that surpassed both corporate and DOE program energy and carbon goals. Volvo Trucks Achieves Lofty Energy and Carbon Goals (March 2011) (2.9 MB) More Documents & Publications Volvo: Certification of an Integrated ISO 14001 and ISO 50001/SEP System Metal and Glass

  7. Heavy-Duty Natural Gas Drayage Truck Replacement Program | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Energy Natural Gas Drayage Truck Replacement Program Heavy-Duty Natural Gas Drayage Truck Replacement Program 2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting arravt045_ti_white_2012_o.pdf (517.25 KB) More Documents & Publications Heavy-Duty Natural Gas Drayage Truck Replacement Program Heavy-Duty Natural Gas Drayage Truck Replacement Program UPS Ontario - Las Vegas LNG Corridor Extension Project: Bridging the Gap

  8. High Efficient Clean Combustion for SuperTruck | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    High Efficient Clean Combustion for SuperTruck High Efficient Clean Combustion for SuperTruck Presentation given at the 16th Directions in Engine-Efficiency and Emissions Research (DEER) Conference in Detroit, MI, September 27-30, 2010. deer10_stanton.pdf (1.76 MB) More Documents & Publications Supertruck technologies for 55% thermal efficiency and 68% freight efficiency Cummins SuperTruck Program - Technology Demonstration of Highly Efficient Clean, Diesel Powered Class 8 Trucks Technology

  9. Cummins SuperTruck Program Technology and System Level Demonstration of Highly Efficient and Clean, Diesel Powered Class 8 Trucks

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Innovation You Can Depend On David Koeberlein- Principal Investigator Cummins Inc. Cummins SuperTruck Program Technology and System Level Demonstration of Highly Efficient and Clean, Diesel Powered Class 8 Trucks June 20, 2014 This presentation does not contain any proprietary, confidential, or otherwise restricted information Project ID: ACE057 Innovation You Can Depend On Overview Budget: * Total: $77,662,230 * DoE share* $36,335,608 * CMI share* $36,335,608 * actuals as of 12/31/2013 Today

  10. Thermoelectric Generator Development at Renault Trucks-Volvo Group |

    Broader source: Energy.gov (indexed) [DOE]

    Department of Energy Reviews project to study the potential of thermoelectricity for diesel engines of trucks and passenger cars, where relatively low exhaust temperature is challenging for waste heat recovery systems aixala.pdf (2.28 MB) More Documents & Publications RENOTER Project RENOTER Project Integrated Design and Manufacturing of Thermoelectric Generator Using Thermal Spray

  11. Light Water Reactor Sustainability Program Advanced Seismic Soil Structure Modeling

    SciTech Connect (OSTI)

    Bolisetti, Chandrakanth; Coleman, Justin Leigh

    2015-06-01

    of interest. The specific nonlinear soil behavior included in the NLSSI calculation presented in this report is gapping and sliding. Other NLSSI effects are not included in the calculation. The results presented in this report document initial model runs in the linear and nonlinear analysis process. Final comparisons between traditional and advanced SPRA will be presented in the September 30th deliverable.

  12. Motor vehicle mpg and market shares report: first six months of model year 1984

    SciTech Connect (OSTI)

    Hu, P.S.; Greene, D.L.; Till, L.E.

    1984-10-01

    This issue of the publication reports the sales, market shares, estimated sales-weighted fuel economies, and other estimated sales-weighted vehicle characteristics of automobiles and light trucks for the first six months of model year 1984 and for the previous five model years. Comparisons and observations are made on the trends in these vehicles from one model year to the next. An improved methodology is used to allocate the yearly mpg changes among eight components, rather than the four reported in the previous reports. Sales of automobiles showed an increase of 21.8% from the first half of model year 1983. An even more striking increase was observed in the sales of light trucks: 42.2% from the first half of model year 1983. The first six months of model year 1984 experienced a gain of 0.21 mpg in sales-weighted automobile fuel economy. In contrast, light trucks experienced a loss of 0.83 mpg in fuel economy, from 20.52 mpg in model year 1983 to 19.69 mpg in the first half of model year 1984.

  13. Impact of Pilot Light Modeling on the Predicted Annual Performance of Residential Gas Water Heaters: Preprint

    SciTech Connect (OSTI)

    Maguire, J.; Burch, J.

    2013-08-01

    Modeling residential water heaters with dynamic simulation models can provide accurate estimates of their annual energy consumption, if the units? characteristics and use conditions are known. Most gas storage water heaters (GSWHs) include a standing pilot light. It is generally assumed that the pilot light energy will help make up standby losses and have no impact on the predicted annual energy consumption. However, that is not always the case. The gas input rate and conversion efficiency of a pilot light for a GSWH were determined from laboratory data. The data were used in simulations of a typical GSWH with and without a pilot light, for two cases: 1) the GSWH is used alone; and 2) the GSWH is the second tank in a solar water heating (SWH) system. The sensitivity of wasted pilot light energy to annual hot water use, climate, and installation location was examined. The GSWH used alone in unconditioned space in a hot climate had a slight increase in energy consumption. The GSWH with a pilot light used as a backup to an SWH used up to 80% more auxiliary energy than one without in hot, sunny locations, from increased tank losses.

  14. Simulated fuel economy and emissions performance during city and interstate driving for a heavy-duty hybrid truck

    SciTech Connect (OSTI)

    Daw, C Stuart; Gao, Zhiming; Smith, David E; LaClair, Tim J; Pihl, Josh A; Edwards, Kevin Dean

    2013-01-01

    We compare simulated fuel economy and emissions for both conventional and hybrid class 8 heavy-duty diesel trucks operating over multiple urban and highway driving cycles. Both light and heavy freight loads were considered, and all simulations included full aftertreatment for NOx and particulate emissions controls. The aftertreatment components included a diesel oxidation catalyst (DOC), urea-selective catalytic NOx reduction (SCR), and a catalyzed diesel particulate filter (DPF). Our simulated hybrid powertrain was configured with a pre-transmission parallel drive, with a single electric motor between the clutch and gearbox. A conventional HD truck with equivalent diesel engine and aftertreatment was also simulated for comparison. Our results indicate that hybridization can significantly increase HD fuel economy and improve emissions control in city driving. However, there is less potential hybridization benefit for HD highway driving. A major factor behind the reduced hybridization benefit for highway driving is that there are fewer opportunities to utilize regenerative breaking. Our aftertreatment simulations indicate that opportunities for passive DPF regeneration are much greater for both hybrid and conventional trucks during highway driving due to higher sustained exhaust temperatures. When passive DPF regeneration is extensively utilized, the fuel penalty for particulate control is virtually eliminated, except for the 0.4%-0.9% fuel penalty associated with the slightly higher exhaust backpressure.

  15. Fact #917: March 21, 2016 Work Truck Daily Idle Time by Industry |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy 7: March 21, 2016 Work Truck Daily Idle Time by Industry Fact #917: March 21, 2016 Work Truck Daily Idle Time by Industry SUBSCRIBE to the Fact of the Week Results of the 2015 Work Truck Electrification and Idle Management Study showed the daily idle time for work truck fleets. Daily idle times by industry show that the truck fleets in the utility/telecommunications industry had the longest idle times. Thirty-nine percent of respondents indicated that their fleets idled

  16. Video: SuperTruck Barreling Down the Road of Sustainability | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Energy SuperTruck Barreling Down the Road of Sustainability Video: SuperTruck Barreling Down the Road of Sustainability May 14, 2015 - 4:30pm Addthis New Energy 101 video shows how the Energy Department's SuperTruck initiative is making Class 8 trucks more fuel efficient and less expensive to operate. | Office of Energy Efficiency and Renewable Energy video. Paul Lester Paul Lester Digital Content Specialist, Office of Public Affairs KEY FACTS SuperTruck initiative helping make Class 8

  17. SuperTruck Making Leaps in Fuel Efficiency | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    SuperTruck Making Leaps in Fuel Efficiency SuperTruck Making Leaps in Fuel Efficiency February 26, 2014 - 12:00am Addthis Pedestrians passing by the Energy Department headquarters in Washington, D.C., on February 19 saw quite a strange sight - an ultra-modern 18-wheeler, Class 8 tractor-trailer parked outside the headquarters building. This is no ordinary truck - €it' s called a SuperTruck, a demonstration vehicle that is part of the Energy Department's SuperTruck initiative. This program's

  18. Registrations and vehicle miles of travel of light duty vehicles, 1985--1995

    SciTech Connect (OSTI)

    Hu, P.S.; Davis, S.C.; Schmoyer, R.L.

    1998-02-01

    To obtain vehicle registration data that consistently and accurately reflect the distinction between automobiles and light-duty trucks, Oak Ridge National Laboratory (ORNL) was asked by FHWA to estimate the current and historical vehicle registration numbers of automobiles and of other two-axle four-tire vehicles (i.e., light-duty trucks), and their associated travel. The term automobile is synonymous with passenger car. Passenger cars are defined as all sedans, coupes, and station wagons manufactured primarily for the purpose of carrying passengers. This includes taxicabs, rental cars, and ambulances and hearses on an automobile chassis. Light-duty trucks refer to all two-axle four-tire vehicles other than passenger cars. They include pickup trucks, panel trucks, delivery and passenger vans, and other vehicles such as campers, motor homes, ambulances on a truck chassis, hearses on a truck chassis, and carryalls. In this study, light-duty trucks include four major types: (1) pickup truck, (2) van, (3) sport utility vehicle, and (4) other 2-axle 4-tire truck. Specifically, this project re-estimates statistics that appeared in Tables MV-1 and MV-9 of the 1995 Highway Statistics. Given the complexity of the approach developed in this effort and the incompleteness and inconsistency of the state-submitted data, it is recommended that alternatives be considered by FHWA to obtain vehicle registration data. One alternative is the Polk`s NVPP data (via the US Department of Transportation`s annual subscription to Polk). The second alternative is to obtain raw registration files from individual states` Departments of Motor Vehicles and to decode individual VINs.

  19. DIESEL TRUCK IDLING EMISSIONS - MEASUREMENTS AT A PM2.5 HOT SPOT

    SciTech Connect (OSTI)

    Parks, II, James E; Miller, Terry L.; Storey, John Morse; Fu, Joshua S.; Hromis, Boris

    2007-01-01

    The University of Tennessee and Oak Ridge National Laboratory conducted a 5-month long air monitoring study at the Watt Road interchange on I-40 in Knoxville Tennessee where there are 20,000 heavy-duty trucks per day traveling the interstate. In addition, there are 3 large truck stops at this interchange where as many as 400 trucks idle engines at night. As a result, high levels of PM2.5 were measured near the interchange often exceeding National Ambient Air Quality Standards. This paper presents the results of the air monitoring study illustrating the hourly, day-of-week, and seasonal patterns of PM2.5 resulting from diesel truck emissions on the interstate and at the truck stops. Surprisingly, most of the PM2.5 concentrations occurred during the night when the largest contribution of emissions was from idling trucks rather than trucks on the interstate. A nearby background air monitoring site was used to identify the contribution of regional PM2.5 emissions which also contribute significantly to the concentrations measured at the site. The relative contributions of regional background, local truck idling and trucks on the interstate to local PM2.5 concentrations are presented and discussed in the paper. The results indicate the potential significance of diesel truck idling emissions to the occurrence of hot-spots of high PM2.5 concentrations near large truck stops, ports or border crossings.

  20. Plug-In Hybrid Urban Delivery Truck Technology Demonstration

    SciTech Connect (OSTI)

    Miyasato, Matt; Impllitti, Joseph; Pascal, Amar

    2015-07-31

    The I-710 and CA-60 highways are key transportation corridors in the Southern California region that are heavily used on a daily basis by heavy duty drayage trucks that transport the cargo from the ports to the inland transportation terminals. These terminals, which include store/warehouses, inland-railways, are anywhere from 5 to 50 miles in distance from the ports. The concentrated operation of these drayage vehicles in these corridors has had and will continue to have a significant impact on the air quality in this region whereby significantly impacting the quality of life in the communities surrounding these corridors. To reduce these negative impacts it is critical that zero and near-zero emission technologies be developed and deployed in the region. A potential local market size of up to 46,000 trucks exists in the South Coast Air Basin, based on near- dock drayage trucks and trucks operating on the I-710 freeway. The South Coast Air Quality Management District (SCAQMD), California Air Resources Board (CARB) and Southern California Association of Governments (SCAG) — the agencies responsible for preparing the State Implementation Plan required under the federal Clean Air Act — have stated that to attain federal air quality standards the region will need to transition to broad use of zero and near zero emission energy sources in cars, trucks and other equipment (Southern California Association of Governments et al, 2011). SCAQMD partnered with Volvo Trucks to develop, build and demonstrate a prototype Class 8 heavy-duty plug-in hybrid drayage truck with significantly reduced emissions and fuel use. Volvo’s approach leveraged the group’s global knowledge and experience in designing and deploying electromobility products. The proprietary hybrid driveline selected for this proof of concept was integrated with multiple enhancements to the complete vehicle in order to maximize the emission and energy impact of electrification. A detailed review of all

  1. Development of a Waste Heat Recovery System for Light Duty Diesel...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Performance of an Organic Rankine Cycle Waste Heat Recovery System for Light Duty Diesel Engines A Quantum Leap for Heavy-Duty Truck Engine Efficiency - Hybrid Power System of ...

  2. Fact #715: February 20, 2012 The Average Age of Light Vehicles Continues to Rise

    Broader source: Energy.gov [DOE]

    The average age for cars and light trucks continues to rise as consumers hold onto their vehicles longer. Between 1995 and 2011, the average age for cars increased by 32% from 8.4 years to 11.1...

  3. Advanced Fuel Performance: Modeling and Simulation Light Water Reactor Fuel Performance:

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    63 No. 8 * JOM 49 www.tms.org/jom.html Advanced Fuel Performance: Modeling and Simulation Light Water Reactor Fuel Performance: Current Status, Challenges, and Future High Fidelity Modeling K. Edsinger, C.R. Stanek, and B.D. Wirth How would you... ...describe the overall signifcance of this paper? This paper provides a concise description of the nuclear fuel used in pressurized water nuclear reactors and the most commonly observed fuel failure mechanisms. ...describe this work to a materials

  4. Los Alamos boosts light-water reactor research with advanced modeling and

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    simulation technology Los Alamos boosts light-water reactor research Los Alamos boosts light-water reactor research with advanced modeling and simulation technology As part of the consortium CASL will now be deployed to industry and academia under a new inter-institutional agreement for intellectual property. March 2, 2015 A simulation demonstrates the volume fraction of a bubble phase in the region downstream of a 3×3 rod bundle after a short burst of bubbles has been introduced into the

  5. Low-mass helium star models for type Ib supernovae - Light curves, mixing, and nucleosynthesis

    SciTech Connect (OSTI)

    Shigeyama, Toshikazu; Nomoto, Kenichi; Tsujimoto, Takuji; Hashimoto, Masaki (Tokyo Univ. (Japan) Kyushu Univ., Fukuoka (Japan))

    1990-09-01

    The applicability of theoretical models of He-star explosions to type Ib SN explosions is explored. Particular attention is given to light curves and mixing, Rayleigh-Taylor instabilities and mixing, and nucleosynthesis and the mass of Ni-56. Typical numerical results are presented in graphs, and it is concluded that the explosions of SN 1983N and SN 1983I can be accurately represented in terms of explosions of He stars with M(alpha) of 3-4 solar mass. A strong M(alpha) dependence of light-curve shape, photospheric velocity, and Ni-56 mass is found. 44 refs.

  6. Model Year 2015 Fuel Economy Guide: EPA Fuel Economy Estimates

    SciTech Connect (OSTI)

    2014-12-01

    The Fuel Economy Guide is published by the U.S. Department of Energy as an aid to consumers considering the purchase of a new vehicle. The Guide lists estimates of miles per gallon (mpg) for each vehicle available for the new model year. These estimates are provided by the U.S. Environmental Protection Agency in compliance with Federal Law. By using this Guide, consumers can estimate the average yearly fuel cost for any vehicle. The Guide is intended to help consumers compare the fuel economy of similarly sized cars, light duty trucks and special purpose vehicles. The vehicles listed have been divided into three classes of cars, three classes of light duty trucks, and three classes of special purpose vehicles.

  7. Model Year 2014 Fuel Economy Guide: EPA Fuel Economy Estimates

    SciTech Connect (OSTI)

    2013-12-01

    The Fuel Economy Guide is published by the U.S. Department of Energy as an aid to consumers considering the purchase of a new vehicle. The Guide lists estimates of miles per gallon (mpg) for each vehicle available for the new model year. These estimates are provided by the U.S. Environmental Protection Agency in compliance with Federal Law. By using this Guide, consumers can estimate the average yearly fuel cost for any vehicle. The Guide is intended to help consumers compare the fuel economy of similarly sized cars, light duty trucks and special purpose vehicles. The vehicles listed have been divided into three classes of cars, three classes of light duty trucks, and three classes of special purpose vehicles.

  8. Model Year 2016 Fuel Economy Guide: EPA Fuel Economy Estimates

    SciTech Connect (OSTI)

    2015-11-01

    The Fuel Economy Guide is published by the U.S. Department of Energy as an aid to consumers considering the purchase of a new vehicle. The Guide lists estimates of miles per gallon (mpg) for each vehicle available for the new model year. These estimates are provided by the U.S. Environmental Protection Agency in compliance with Federal Law. By using this Guide, consumers can estimate the average yearly fuel cost for any vehicle. The Guide is intended to help consumers compare the fuel economy of similarly sized cars, light duty trucks and special purpose vehicles. The vehicles listed have been divided into three classes of cars, three classes of light duty trucks, and three classes of special purpose vehicles.

  9. Model Year 2007 Fuel Economy Guide: EPA Fuel Economy Estimates

    SciTech Connect (OSTI)

    2007-10-01

    The Fuel Economy Guide is published by the U.S. Department of Energy as an aid to consumers considering the purchase of a new vehicle. The Guide lists estimates of miles per gallon (mpg) for each vehicle available for the new model year. These estimates are provided by the U.S. Environmental Protection Agency in compliance with Federal Law. By using this Guide, consumers can estimate the average yearly fuel cost for any vehicle. The Guide is intended to help consumers compare the fuel economy of similarly sized cars, light duty trucks and special purpose vehicles. The vehicles listed have been divided into three classes of cars, three classes of light duty trucks, and three classes of special purpose vehicles.

  10. Model Year 2010 Fuel Economy Guide: EPA Fuel Economy Estimates

    SciTech Connect (OSTI)

    2009-10-14

    The Fuel Economy Guide is published by the U.S. Department of Energy as an aid to consumers considering the purchase of a new vehicle. The Guide lists estimates of miles per gallon (mpg) for each vehicle available for the new model year. These estimates are provided by the U.S. Environmental Protection Agency in compliance with Federal Law. By using this Guide, consumers can estimate the average yearly fuel cost for any vehicle. The Guide is intended to help consumers compare the fuel economy of similarly sized cars, light duty trucks and special purpose vehicles. The vehicles listed have been divided into three classes of cars, three classes of light duty trucks, and three classes of special purpose vehicles.

  11. Model Year 2009 Fuel Economy Guide: EPA Fuel Economy Estimates

    SciTech Connect (OSTI)

    2008-10-01

    The Fuel Economy Guide is published by the U.S. Department of Energy as an aid to consumers considering the purchase of a new vehicle. The Guide lists estimates of miles per gallon (mpg) for each vehicle available for the new model year. These estimates are provided by the U.S. Environmental Protection Agency in compliance with Federal Law. By using this Guide, consumers can estimate the average yearly fuel cost for any vehicle. The Guide is intended to help consumers compare the fuel economy of similarly sized cars, light duty trucks and special purpose vehicles. The vehicles listed have been divided into three classes of cars, three classes of light duty trucks, and three classes of special purpose vehicles.

  12. Model Year 2005 Fuel Economy Guide: EPA Fuel Economy Estimates

    SciTech Connect (OSTI)

    2004-11-01

    The Fuel Economy Guide is published by the U.S. Department of Energy as an aid to consumers considering the purchase of a new vehicle. The Guide lists estimates of miles per gallon (mpg) for each vehicle available for the new model year. These estimates are provided by the U.S. Environmental Protection Agency in compliance with Federal Law. By using this Guide, consumers can estimate the average yearly fuel cost for any vehicle. The Guide is intended to help consumers compare the fuel economy of similarly sized cars, light duty trucks and special purpose vehicles. The vehicles listed have been divided into three classes of cars, three classes of light duty trucks, and three classes of special purpose vehicles.

  13. Model Year 2008 Fuel Economy Guide: EPA Fuel Economy Estimates

    SciTech Connect (OSTI)

    2007-10-01

    The Fuel Economy Guide is published by the U.S. Department of Energy as an aid to consumers considering the purchase of a new vehicle. The Guide lists estimates of miles per gallon (mpg) for each vehicle available for the new model year. These estimates are provided by the U.S. Environmental Protection Agency in compliance with Federal Law. By using this Guide, consumers can estimate the average yearly fuel cost for any vehicle. The Guide is intended to help consumers compare the fuel economy of similarly sized cars, light duty trucks and special purpose vehicles. The vehicles listed have been divided into three classes of cars, three classes of light duty trucks, and three classes of special purpose vehicles.

  14. Model Year 2006 Fuel Economy Guide: EPA Fuel Economy Estimates

    SciTech Connect (OSTI)

    2005-11-01

    The Fuel Economy Guide is published by the U.S. Department of Energy as an aid to consumers considering the purchase of a new vehicle. The Guide lists estimates of miles per gallon (mpg) for each vehicle available for the new model year. These estimates are provided by the U.S. Environmental Protection Agency in compliance with Federal Law. By using this Guide, consumers can estimate the average yearly fuel cost for any vehicle. The Guide is intended to help consumers compare the fuel economy of similarly sized cars, light duty trucks and special purpose vehicles. The vehicles listed have been divided into three classes of cars, three classes of light duty trucks, and three classes of special purpose vehicles.

  15. Fuel Cell Based Auxiliary Power Unit for Refrigerated Trucks

    SciTech Connect (OSTI)

    Brooks, Kriston P.

    2014-09-02

    This is the annual report for the Market Transformation project as required by DOE EERE's Fuel Cell Technologies Office. We have been provided with a specific format. It describes the work that was done in developing fuel-cell powered Transport Refrigeration Units for Reefer Trucks. It describes the progress that has been made by Nuvera and Plug Power as they develop and ultimately demonstrate this technology in real world application.

  16. 21st Century Truck Partnership - Roadmap and Technical White Papers

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Appendix of Supporting Information - 21CTP-0003, December 2006 | Department of Energy - Roadmap and Technical White Papers Appendix of Supporting Information - 21CTP-0003, December 2006 21st Century Truck Partnership - Roadmap and Technical White Papers Appendix of Supporting Information - 21CTP-0003, December 2006 Appendix containing supporting information to the 21st Century Partnership's Roadmap and Technical White Papers (21CTP-003). 21ctp_roadmap_appendix_2007.pdf (3.98 MB) More

  17. The ethanol heavy-duty truck fleet demonstration project

    SciTech Connect (OSTI)

    1997-06-01

    This project was designed to test and demonstrate the use of a high- percentage ethanol-blended fuel in a fleet of heavy-duty, over-the- road trucks, paying particular attention to emissions, performance, and repair and maintenance costs. This project also represents the first public demonstration of the use of ethanol fuels as a viable alternative to conventional diesel fuel in heavy-duty engines.

  18. Hydraulic Hybrid Parcel Delivery Truck Deployment, Testing & Demonstration

    SciTech Connect (OSTI)

    Gallo, Jean-Baptiste

    2014-03-07

    Although hydraulic hybrid systems have shown promise over the last few years, commercial deployment of these systems has primarily been limited to Class 8 refuse trucks. In 2005, the Hybrid Truck Users Forum initiated the Parcel Delivery Working Group including the largest parcel delivery fleets in North America. The goal of the working group was to evaluate and accelerate commercialization of hydraulic hybrid technology for parcel delivery vehicles. FedEx Ground, Purolator and United Parcel Service (UPS) took delivery of the world’s first commercially available hydraulic hybrid parcel delivery trucks in early 2012. The vehicle chassis includes a Parker Hannifin hydraulic hybrid drive system, integrated and assembled by Freightliner Custom Chassis Corp., with a body installed by Morgan Olson. With funding from the U.S. Department of Energy, CALSTART and its project partners assessed the performance, reliability, maintainability and fleet acceptance of three pre-production Class 6 hydraulic hybrid parcel delivery vehicles using information and data from in-use data collection and on-road testing. This document reports on the deployment of these vehicles operated by FedEx Ground, Purolator and UPS. The results presented provide a comprehensive overview of the performance of commercial hydraulic hybrid vehicles in parcel delivery applications. This project also informs fleets and manufacturers on the overall performance of hydraulic hybrid vehicles, provides insights on how the technology can be both improved and more effectively used. The key findings and recommendations of this project fall into four major categories: -Performance, -Fleet deployment, -Maintenance, -Business case. Hydraulic hybrid technology is relatively new to the market, as commercial vehicles have been introduced only in the past few years in refuse and parcel delivery applications. Successful demonstration could pave the way for additional purchases of hydraulic hybrid vehicles throughout the

  19. Fuel Cell-Powered Lift Truck Fleet Deployment Projects Final Technical Report May 2014

    SciTech Connect (OSTI)

    Klingler, James J

    2014-05-06

    The overall objectives of this project were to evaluate the performance, operability and safety of fork lift trucks powered by fuel cells in large distribution centers. This was accomplished by replacing the batteries in over 350 lift trucks with fuel cells at five distribution centers operated by GENCO. The annual cost savings of lift trucks powered by fuel cell power units was between $2,400 and $5,300 per truck compared to battery powered lift trucks, excluding DOE contributions. The greatest savings were in fueling labor costs where a fuel cell powered lift truck could be fueled in a few minutes per day compared to over an hour for battery powered lift trucks which required removal and replacement of batteries. Lift truck operators where generally very satisfied with the performance of the fuel cell power units, primarily because there was no reduction in power over the duration of a shift as experienced with battery powered lift trucks. The operators also appreciated the fast and easy fueling compared to the effort and potential risk of injury associated with switching heavy batteries in and out of lift trucks. There were no safety issues with the fueling or operation of the fuel cells. Although maintenance costs for the fuel cells were higher than for batteries, these costs are expected to decrease significantly in the next generation of fuel cells, making them even more cost effective.

  20. Emissions from Trucks using Fischer-Tropsch Diesel Fuel

    SciTech Connect (OSTI)

    Paul Norton; Keith Vertin; Brent Bailey; Nigel N. Clark; Donald W. Lyons; Stephen Goguen; James Eberhardt

    1998-10-19

    The Fischer-Tropsch (F-T) catalytic conversion process can be used to synthesize diesel fuels from a variety of feedstocks, including coal, natural gas and biomass. Synthetic diesel fuels can have very low sulfur and aromatic content, and excellent autoignition characteristics. Moreover, Fischer-Tropsch diesel fuels may also be economically competitive with California B- diesel fuel if produced in large volumes. overview of Fischer-Tropsch diesel fuel production and engine emissions testing is presented. Previous engine laboratory tests indicate that F-T diesel is a promising alternative fuel because it can be used in unmodified diesel engines, and substantial exhaust emissions reductions can be realized. The authors have performed preliminary tests to assess the real-world performance of F-T diesel fuels in heavy-duty trucks. Seven White-GMC Class 8 trucks equipped with Caterpillar 10.3 liter engines were tested using F-T diesel fuel. Vehicle emissions tests were performed using West Virginia University's unique transportable chassis dynamometer. The trucks were found to perform adequately on neat F-T diesel fuel. Compared to a California diesel fuel baseline, neat F-T diesel fuel emitted about 12% lower oxides of nitrogen (NOx) and 24% lower particulate matter over a five-mile driving cycle.

  1. FUEL CONSUMPTION AND COST SAVINGS OF CLASS 8 HEAVY-DUTY TRUCKS POWERED BY NATURAL GAS

    SciTech Connect (OSTI)

    Gao, Zhiming; LaClair, Tim J; Daw, C Stuart; Smith, David E

    2013-01-01

    We compare the fuel consumption and greenhouse gas emissions of natural gas and diesel heavy-duty (HD) class 8 trucks under consistent simulated drive cycle conditions. Our study included both conventional and hybrid HD trucks operating with either natural gas or diesel engines, and we compare the resulting simulated fuel efficiencies, fuel costs, and payback periods. While trucks powered by natural gas engines have lower fuel economy, their CO2 emissions and costs are lower than comparable diesel trucks. Both diesel and natural gas powered hybrid trucks have significantly improved fuel economy, reasonable cost savings and payback time, and lower CO2 emissions under city driving conditions. However, under freeway-dominant driving conditions, the overall benefits of hybridization are considerably less. Based on payback period alone, non-hybrid natural gas trucks appear to be the most economic option for both urban and freeway driving environments.

  2. Medium Truck Duty Cycle Data from Real-World Driving Environments: Project Interim Report

    SciTech Connect (OSTI)

    Franzese, Oscar; Lascurain, Mary Beth; Capps, Gary J

    2011-01-01

    Since the early part of the 20th century, the US trucking industry has provided a safe and economical means of moving commodities across the country. At the present time, nearly 80% of the US domestic freight movement involves the use of trucks. The US Department of Energy (DOE) is spearheading a number of research efforts to improve heavy vehicle fuel efficiencies. This includes research in engine technologies (including hybrid and fuel cell technologies), lightweight materials, advanced fuels, and parasitic loss reductions. In addition, DOE is developing advanced tools and models to support heavy vehicle truck research, and is leading the 21st Century Truck Partnership whose stretch goals involve a reduction by 50% of the fuel consumption of heavy vehicles on a ton-mile basis. This Medium Truck Duty Cycle (MTDC) Project is a critical element in DOE s vision for improved heavy vehicle energy efficiency and is unique in that there is no other national database of characteristic duty cycles for medium trucks. It involves the collection of real-world data for various situational characteristics (rural/urban, freeway/arterial, congested/free-flowing, good/bad weather, etc.) and looks at the unique nature of medium trucks drive cycles (stop-and-go delivery, power takeoff, idle time, short-radius trips), to provide a rich source of data that can contribute to the development of new tools for fuel efficiency and modeling, provide DOE a sound basis upon which to make technology investment decisions, and provide a national archive of real-world-based medium-truck operational data to support heavy vehicle energy efficiency research. The MTDC project involves a two-part field operational test (FOT). For the Part-1 FOT, three vehicles, each from two vocations (urban transit and dry-box delivery) were instrumented for one year of data collection. The Part-2 FOT will involve the towing/recovery and utility vocations. The vehicles participating in the MTDC project are doing so

  3. Simple description of light W, Os, and Pt nuclei in the interacting boson model

    SciTech Connect (OSTI)

    McCutchan, E.A.; Zamfir, N.V.

    2005-05-01

    A simple, two-parameter IBA-1 Hamiltonian is applied to light W, Os, and Pt nuclei with N {<=} 104. Equal emphasis is placed on fitting all low-lying positive parity excitations resulting in a good description of energy levels and electromagnetic transition rates. A mapping of these parameters into the IBA symmetry triangle finds that these nuclei lie rather central in the triangle and close to the phase transition region of the IBA model.

  4. Cosmological parameter uncertainties from SALT-II type Ia supernova light curve models

    SciTech Connect (OSTI)

    Mosher, J.; Sako, M. [Department of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, PA 19104 (United States); Guy, J.; Astier, P.; Betoule, M.; El-Hage, P.; Pain, R.; Regnault, N. [LPNHE, CNRS/IN2P3, Universit Pierre et Marie Curie Paris 6, Universi Denis Diderot Paris 7, 4 place Jussieu, F-75252 Paris Cedex 05 (France); Kessler, R.; Frieman, J. A. [Kavli Institute for Cosmological Physics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637 (United States); Marriner, J. [Center for Particle Astrophysics, Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510 (United States); Biswas, R.; Kuhlmann, S. [Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL 60439 (United States); Schneider, D. P., E-mail: kessler@kicp.chicago.edu [Department of Astronomy and Astrophysics, The Pennsylvania State University, University Park, PA 16802 (United States)

    2014-09-20

    We use simulated type Ia supernova (SN Ia) samples, including both photometry and spectra, to perform the first direct validation of cosmology analysis using the SALT-II light curve model. This validation includes residuals from the light curve training process, systematic biases in SN Ia distance measurements, and a bias on the dark energy equation of state parameter w. Using the SN-analysis package SNANA, we simulate and analyze realistic samples corresponding to the data samples used in the SNLS3 analysis: ?120 low-redshift (z < 0.1) SNe Ia, ?255 Sloan Digital Sky Survey SNe Ia (z < 0.4), and ?290 SNLS SNe Ia (z ? 1). To probe systematic uncertainties in detail, we vary the input spectral model, the model of intrinsic scatter, and the smoothing (i.e., regularization) parameters used during the SALT-II model training. Using realistic intrinsic scatter models results in a slight bias in the ultraviolet portion of the trained SALT-II model, and w biases (w {sub input} w {sub recovered}) ranging from 0.005 0.012 to 0.024 0.010. These biases are indistinguishable from each other within the uncertainty; the average bias on w is 0.014 0.007.

  5. Volvo Truck Headquarters in North Carolina to Host Event With Acting Under

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Secretary of Energy Majumdar | Department of Energy Volvo Truck Headquarters in North Carolina to Host Event With Acting Under Secretary of Energy Majumdar Volvo Truck Headquarters in North Carolina to Host Event With Acting Under Secretary of Energy Majumdar January 26, 2012 - 2:00pm Addthis Washington, D.C. - Tomorrow, Friday, January 27, Acting Under Secretary of Energy Arun Majumdar and North Carolina Congressman Howard Coble will visit the Volvo Group's truck headquarters in Greensboro,

  6. DOE Awards Grants to Evaluate Technologies that Reduce Truck Idling - News

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Releases | NREL DOE Awards Grants to Evaluate Technologies that Reduce Truck Idling January 29, 2004 Golden, Colo. - The U.S. Department of Energy's Advanced Vehicle Testing Activity has awarded separate project grants to Caterpillar Inc. and Schneider National Inc. to investigate technologies that reduce truck idling. According to industry experts, truck idling consumes more than 800 million gallons of fuel each year. Reducing the amount of fuel needed to support idling activities, such as

  7. EERE Success Story-World's First Fuel Cell Cargo Trucks Deployed at

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Memphis International Airport | Department of Energy Fuel Cell Cargo Trucks Deployed at Memphis International Airport EERE Success Story-World's First Fuel Cell Cargo Trucks Deployed at Memphis International Airport June 25, 2015 - 1:57pm Addthis EERE Success Story—World's First Fuel Cell Cargo Trucks Deployed at Memphis International Airport Thanks to R&D funding from the Energy Department's Fuel Cell Technologies Office (FCTO), the Federal Express Hub at the Memphis International

  8. Policy Discussion - Heavy-Duty Truck Fuel Economy | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Policy Discussion - Heavy-Duty Truck Fuel Economy Policy Discussion - Heavy-Duty Truck Fuel Economy 2004 Diesel Engine Emissions Reduction (DEER) Conference Presesntation: National Commission on Energy Policy 2004_deer_kodjak.pdf (168.97 KB) More Documents & Publications 21st Century Truck Partnership Roadmap Roadmap and Technical White Papers - 21CTP-0003, December 2006 The Energy Efficiency Potential of Global Transport to 2050 Vehicle Technologies Office Merit Review 2014: DOE's Effort to

  9. Vehicle Technologies Office: 21st Century Truck Technical Goals and Teams

    Broader source: Energy.gov [DOE]

    Fuel efficiency in heavy trucks depends on a number of factors associated with the truck and its components. The top figure shows the power use inventory for a basic Class 8 tractor-trailer combination, listing its balance of fuel input, engine output, and tractive power (losses from aerodynamics, rolling resistance, and inertia). The power use inventory in this diagram highlights areas in which research efforts can lead to major benefits in truck fuel efficiency, including engine efficiency, aerodynamics, and rolling resistance.

  10. UNCERTAINTIES OF MODELING GAMMA-RAY PULSAR LIGHT CURVES USING VACUUM DIPOLE MAGNETIC FIELD

    SciTech Connect (OSTI)

    Bai Xuening; Spitkovsky, Anatoly E-mail: anatoly@astro.princeton.ed

    2010-06-01

    Current models of pulsar gamma-ray emission use the magnetic field of a rotating dipole in vacuum as a first approximation to the shape of a plasma-filled pulsar magnetosphere. In this paper, we revisit the question of gamma-ray light curve formation in pulsars in order to ascertain the robustness of the 'two-pole caustic (TPC)' and 'outer gap (OG)' models based on the vacuum magnetic field. We point out an inconsistency in the literature on the use of the relativistic aberration formula, where in several works the shape of the vacuum field was treated as known in the instantaneous corotating frame, rather than in the laboratory frame. With the corrected formula, we find that the peaks in the light curves predicted from the TPC model using the vacuum field are less sharp. The sharpness of the peaks in the OG model is less affected by this change, but the range of magnetic inclination angles and viewing geometries resulting in double-peaked light curves is reduced. In a realistic magnetosphere, the modification of field structure near the light cylinder (LC) due to plasma effects may change the shape of the polar cap and the location of the emission zones. We study the sensitivity of the light curves to different shapes of the polar cap for static and retarded vacuum dipole fields. In particular, we consider polar caps traced by the last open field lines and compare them to circular polar caps. We find that the TPC model is very sensitive to the shape of the polar cap, and a circular polar cap can lead to four peaks of emission. The OG model is less affected by different polar cap shapes, but is subject to big uncertainties of applying the vacuum field near the LC. We conclude that deviations from the vacuum field can lead to large uncertainties in pulse shapes, and a more realistic force-free field should be applied to the study of pulsar high-energy emission.

  11. Fuel-Borne Catalyst Assisted DPF regeneration on a Renault truck...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Fuel-Borne Catalyst Assisted DPF regeneration on a Renault truck MD9 Engine Outfitted with SCR Poster presentation at the 2007 Diesel Engine-Efficiency & Emissions Research ...

  12. Vehicle Technologies Office Issues Notice of Intent for SuperTruck...

    Office of Environmental Management (EM)

    ... are "impressive" and will "significantly reduce the fuel consumption of Class 8 tractor-trailer vehicles." National Academy of Sciences Reviews 21st Century Truck Partnership

  13. SuperTruck … Development and Demonstration of a Fuel-Efficient...

    Broader source: Energy.gov (indexed) [DOE]

    More Documents & Publications SuperTruck Development and Demonstration of a Fuel-Efficient Class 8 Tractor & Trailer Supertruck - Development and Demonstration of a ...

  14. Fact #597: November 16, 2009 Median Age of Cars and Trucks Rising in 2008 |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy 7: November 16, 2009 Median Age of Cars and Trucks Rising in 2008 Fact #597: November 16, 2009 Median Age of Cars and Trucks Rising in 2008 The median age of cars and trucks in the U.S. continued to grow in 2008. Due to the economic climate and high gasoline prices that summer, consumers held onto their vehicles longer and delayed new purchases of vehicles. The median age of cars was at an all-time high in 2008, while the median age of trucks reached its highest point

  15. Heavy-Duty Truck Engine: 2007 Emissions with Excellent Fuel Economy...

    Broader source: Energy.gov (indexed) [DOE]

    Heavy-Duty Truck Engine Program PDF icon 2004deernelson.pdf More Documents & Publications High Engine Efficiency at 2010 Emissions Achieving High Efficiency at 2010 Emissions ...

  16. DOEs Effort to Reduce Truck Aerodynamic Drag through Joint...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Vehicle Technologies Office Merit Review 2014: DOE's Effort to Improve Heavy Vehicle Fuel Efficiency through Improved Aerodynamics DOEs Effort to Reduce Truck Aerodynamic Drag ...

  17. DOEs Effort to Reduce Truck Aerodynamic Drag through Joint...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Fuel Efficiency through Improved Aerodynamics DOEs Effort to Reduce Truck ... 2015: DOE's Effort to Improve Heavy Vehicle Fuel Efficiency through Improved Aerodynamics

  18. Fact #899: November 16, 2015 World Production of Cars and Trucks - Dataset

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    | Department of Energy 9: November 16, 2015 World Production of Cars and Trucks - Dataset Fact #899: November 16, 2015 World Production of Cars and Trucks - Dataset Excel file and dataset for World Production of Cars and Trucks fotw#899_web.xlsx (46.61 KB) More Documents & Publications Diesel Trucks - Then and Now Fact #848: November 24, 2014 Nearly Three-Fourths of New Cars have Fuel Economy above 25 Miles per Gallon - Dataset Fact #851: December 15, 2014 The Average Number of Gears

  19. Fact #917: March 21, 2016 Work Truck Daily Idle Time by Industry - Dataset

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    | Department of Energy 7: March 21, 2016 Work Truck Daily Idle Time by Industry - Dataset Fact #917: March 21, 2016 Work Truck Daily Idle Time by Industry - Dataset Excel file and dataset for Work Truck Daily Idle Time by Industry fotw#917_web.xlsx (15.85 KB) More Documents & Publications Fact #916: March 14, 2016 Fuel Savings/Emissions Reduction was the Top Reason Cited by Truck Fleet Management for Adopting Idle Reduction Technologies - Dataset Fact #833: August 11, 2014 Fuel Economy

  20. DOE Announces $80 Million in Funding to Increase SuperTruck Efficiency...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    to focus on research, development and demonstration of plug-in electric powertrain ... for research, development and demonstration of long-haul tractor-trailer truck technology. ...

  1. Roadmap and Technical White Papers for 21st Century Truck Partnership

    Office of Energy Efficiency and Renewable Energy (EERE)

    Roadmap document for 21st Century Truck Partnership developed to pursue detailed goals for engine systems, heavy-duty hybrids, parasitic losses, idle reduction, and safety,

  2. Secretary of Energy Bodman Remarks for 21st Century Truck Event...

    Office of Environmental Management (EM)

    Without significant technology development, our Department is forecasting that heavy truck ... are full partners in this effort, putting forth almost 90 million in cost sharing. ...

  3. DOE Announces $80 Million in Funding to Increase SuperTruck Efficiency...

    Broader source: Energy.gov (indexed) [DOE]

    and demonstrate technologies to improve heavy-truck freight efficiency by more than 100 ... plug in hybrid vehicle powertrain that reduces fuel consumption by 50 percent. ...

  4. A validated model to predict microalgae growth in outdoor pond cultures subjected to fluctuating light intensities and water temperatures

    SciTech Connect (OSTI)

    Huesemann, Michael H.; Crowe, Braden J.; Waller, Peter; Chavis, Aaron R.; Hobbs, Samuel J.; Edmundson, Scott J.; Wigmosta, Mark S.

    2015-12-11

    Here, a microalgae biomass growth model was developed for screening novel strains for their potential to exhibit high biomass productivities under nutrient-replete conditions in outdoor ponds subjected to fluctuating light intensities and water temperatures. Growth is modeled by first estimating the light attenuation by biomass according to a scatter-corrected Beer-Lambert Law, and then calculating the specific growth rate in discretized culture volume slices that receive declining light intensities due to attenuation. The model requires the following experimentally determined strain-specific input parameters: specific growth rate as a function of light intensity and temperature, biomass loss rate in the dark as a function of temperature and average light intensity during the preceding light period, and the scatter-corrected biomass light absorption coefficient. The model was successful in predicting the growth performance and biomass productivity of three different microalgae species (Chlorella sorokiniana, Nannochloropsis salina, and Picochlorum sp.) in raceway pond cultures (batch and semi-continuous) subjected to diurnal sunlight intensity and water temperature variations. Model predictions were moderately sensitive to minor deviations in input parameters. To increase the predictive power of this and other microalgae biomass growth models, a better understanding of the effects of mixing-induced rapid light dark cycles on photo-inhibition and short-term biomass losses due to dark respiration in the aphotic zone of the pond is needed.

  5. A validated model to predict microalgae growth in outdoor pond cultures subjected to fluctuating light intensities and water temperatures

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Huesemann, Michael H.; Crowe, Braden J.; Waller, Peter; Chavis, Aaron R.; Hobbs, Samuel J.; Edmundson, Scott J.; Wigmosta, Mark S.

    2015-12-11

    Here, a microalgae biomass growth model was developed for screening novel strains for their potential to exhibit high biomass productivities under nutrient-replete conditions in outdoor ponds subjected to fluctuating light intensities and water temperatures. Growth is modeled by first estimating the light attenuation by biomass according to a scatter-corrected Beer-Lambert Law, and then calculating the specific growth rate in discretized culture volume slices that receive declining light intensities due to attenuation. The model requires the following experimentally determined strain-specific input parameters: specific growth rate as a function of light intensity and temperature, biomass loss rate in the dark as amore » function of temperature and average light intensity during the preceding light period, and the scatter-corrected biomass light absorption coefficient. The model was successful in predicting the growth performance and biomass productivity of three different microalgae species (Chlorella sorokiniana, Nannochloropsis salina, and Picochlorum sp.) in raceway pond cultures (batch and semi-continuous) subjected to diurnal sunlight intensity and water temperature variations. Model predictions were moderately sensitive to minor deviations in input parameters. To increase the predictive power of this and other microalgae biomass growth models, a better understanding of the effects of mixing-induced rapid light dark cycles on photo-inhibition and short-term biomass losses due to dark respiration in the aphotic zone of the pond is needed.« less

  6. Thermal management for heavy vehicles (Class 7-8 trucks)

    SciTech Connect (OSTI)

    Wambsganss, M.W.

    2000-04-03

    Thermal management is a crosscutting technology that has an important effect on fuel economy and emissions, as well as on reliability and safety, of heavy-duty trucks. Trends toward higher-horsepower engines, along with new technologies for reducing emissions, are substantially increasing heat-rejection requirements. For example, exhaust gas recirculation (EGR), which is probably the most popular near-term strategy for reducing NO{sub x} emissions, is expected to add 20 to 50% to coolant heat-rejection requirements. There is also a need to package more cooling in a smaller space without increasing costs. These new demands have created a need for new and innovative technologies and concepts that will require research and development, which, due to its long-term and high-risk nature, would benefit from government funding. This document outlines a research program that was recommended by representatives of truck manufacturers, engine manufacturers, equipment suppliers, universities, and national laboratories. Their input was obtained through personal interviews and a plenary workshop that was sponsored by the DOE Office of Heavy Vehicle Technologies and held at Argonne National Laboratory on October 19--20, 1999. Major research areas that received a strong endorsement by industry and that are appropriate for government funding were identified and included in the following six tasks: (1) Program management/coordination and benefits/cost analyses; (2) Advanced-concept development; (3) Advanced heat exchangers and heat-transfer fluids; (4) Simulation-code development; (5) Sensors and control components development; and (6) Concept/demonstration truck sponsorship.

  7. Recovery Act--Class 8 Truck Freight Efficiency Improvement Project

    SciTech Connect (OSTI)

    Trucks, Daimler

    2015-07-26

    Daimler Trucks North America completed a five year, $79.6M project to develop and demonstrate a concept vehicle with at least 50% freight efficiency improvement over a weighted average of several drive cycles relative to a 2009 best-in-class baseline vehicle. DTNA chose a very fuel efficient baseline vehicle, the 2009 Freightliner Cascadia with a DD15 engine, yet successfully demonstrated a 115% freight efficiency improvement. DTNA learned a great deal about the various technologies that were incorporated into Super Truck and those that, through down-selection, were discarded. Some of the technologies competed with each other for efficiency, and notably some of the technologies complemented each other. For example, we found that Super Truck’s improved aerodynamic drag resulted in improved fuel savings from eCoast, relative to a similar vehicle with worse aerodynamic drag. However, some technologies were in direct competition with each other, namely the predictive technologies which use GPS and 3D digital maps to efficiently manage the vehicles kinetic energy through controls and software, versus hybrid which is a much costlier technology that essentially targets the same inefficiency. Furthermore, the benefits of a comprehensive, integrated powertrain/vehicle approach was proven, in which vast improvements in vehicle efficiency (e.g. lower aero drag and driveline losses) enabled engine strategies such as downrating and downspeeding. The joint engine and vehicle developments proved to be a multiplier-effect which resulted in large freight efficiency improvements. Although a large number of technologies made the selection process and were used on the Super Truck demonstrator vehicle, some of the technologies proved not feasible for series production.

  8. Microsoft Word - 2011sr10-fire truck donation.docx

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Monday, August 8, 2011 james-r.giusti@srs.gov Rick McLeod, SRSCRO, (803) 593-9954, Ext. 1411 rick.mcleod@srscro.org DOE's Excess Property Donation Protects Lives, Property and the Environment AIKEN, SC - The recent purchase of new fire engines at Savannah River Site resulted in the availability of two excess fire trucks under the SRS Community Reuse Organization's (SRS CRO) Asset Transition Program. The primary goal of the Department of Energy's (DOE) Asset Transition Program is to utilize

  9. Unemployed Truck Driver Trains for New Career in Weatherization |

    Broader source: Energy.gov (indexed) [DOE]

    Department of Energy Maya Payne Smart Former Writer for Energy Empowers, EERE What does this mean for me? Workers across the country are being retrained for careers in the new clean energy economy. Tyrone Bailey had been out of work for 14 months when an unemployment office staffer told him about a home-weatherization training program offered by the state of New Jersey. The former truck driver and construction worker jumped at the opportunity to acquire new skills and began training January

  10. Aftertreatment Modeling Status, Futur Potential, and Application...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Aftertreatment Modeling Status, Futur Potential, and Application Issues 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: DaimlerChrysler NAFTA Truck Business ...

  11. Technology Roadmap for the 21st Century Truck Program, a government-industry research partnership

    SciTech Connect (OSTI)

    2000-12-01

    The 21st Century Truck Program has been established as a government-industry research partnership to support the development and implementation of commercially viable technologies that will dramatically cut fuel use and emissions of commercial trucks and buses while enhancing their safety and affordability as well as maintaining or enhancing performance. The innovations resulting from this program will reduce dependence on foreign oil, improve our nation's air quality, provide advanced technology for military vehicles, and enhance the competitiveness of the U.S. truck and bus industry while ensuring safe and affordable freight and bus transportation for the nation's economy. This Technology Roadmap for the 21st Century Truck Program has been prepared to guide the development of the technical advancements that will enable the needed improvements in commercial truck fuel economy, emissions, and safety.

  12. Swelling in light water reactor internal components: Insights from computational modeling

    SciTech Connect (OSTI)

    Stoller, Roger E.; Barashev, Alexander V.; Golubov, Stanislav I.

    2015-08-01

    A modern cluster dynamics model has been used to investigate the materials and irradiation parameters that control microstructural evolution under the relatively low-temperature exposure conditions that are representative of the operating environment for in-core light water reactor components. The focus is on components fabricated from austenitic stainless steel. The model accounts for the synergistic interaction between radiation-produced vacancies and the helium that is produced by nuclear transmutation reactions. Cavity nucleation rates are shown to be relatively high in this temperature regime (275 to 325°C), but are sensitive to assumptions about the fine scale microstructure produced under low-temperature irradiation. The cavity nucleation rates observed run counter to the expectation that void swelling would not occur under these conditions. This expectation was based on previous research on void swelling in austenitic steels in fast reactors. This misleading impression arose primarily from an absence of relevant data. The results of the computational modeling are generally consistent with recent data obtained by examining ex-service components. However, it has been shown that the sensitivity of the model s predictions of low-temperature swelling behavior to assumptions about the primary damage source term and specification of the mean-field sink strengths is somewhat greater that that observed at higher temperatures. Further assessment of the mathematical model is underway to meet the long-term objective of this research, which is to provide a predictive model of void swelling at relevant lifetime exposures to support extended reactor operations.

  13. Analysis of major trends in U.S. commercial trucking, 1977-2002.

    SciTech Connect (OSTI)

    Bertram, K. M.; Santini, D .J.; Vyas, A. D.

    2009-06-10

    This report focuses on various major long-range (1977-2002) and intermediate-range (1982-2002) U.S. commercial trucking trends. The primary sources of data for this period were the U.S. Bureau of the Census Vehicle Inventory and Use Survey and Truck Inventory and Use Survey. In addition, selected 1977-2002 data from the U.S. Department of Energy/Energy Information Administration and from the U.S. Department of Transportation/Federal Highway Administration's Highway Statistics were used. The report analyzes (1) overall gasoline and diesel fuel consumption patterns by passenger vehicles and trucks and (2) the population changes and fuels used by all commercial truck classes by selected truck type (single unit or combination), during specified time periods, with cargo-hauling commercial trucks given special emphasis. It also assesses trends in selected vehicle miles traveled, gallons per vehicle miles traveled, and gallons per cargo ton-mile traveled, as well as the effect of cargo tons per truck on fuel consumption. In addition, the report examines long-range trends for related factors (e.g., long-haul mileages driven by heavy trucks) and their impacts on reducing fuel consumption per cargo-ton-mile and the relative shares of total commercial fuel use among truck classes. It identifies the effects of these trends on U.S. petroleum consumption. The report also discusses basic engineering design and performance, national legislation on interstate highway construction, national demographic trends (e.g., suburbanization), and changes in U.S. corporate operations requirements, and it highlights their impacts on both the long-distance hauling and shorter-distance urban and suburban delivery markets of the commercial trucking industry.

  14. Clean Diesel Engine Component Improvement Program Diesel Truck Thermoelectric Generator

    SciTech Connect (OSTI)

    Elsner, N. B.; Bass, J. C.; Ghamaty, S.; Krommenhoek, D.; Kushch, A.; Snowden, D.; Marchetti, S.

    2005-03-16

    Hi-Z Technology, Inc. (Hi-Z) is currently developing four different auxiliary generator designs that are used to convert a portion (5 to 20%) of the waste heat from vehicle engines exhaust directly to electricity. The four designs range from 200 Watts to 10 kW. The furthest along is the 1 kW Diesel Truck Thermoelectric Generator (DTTEG) for heavy duty Class 8 Diesel trucks, which, under this program, has been subjected to 543,000 equivalent miles of bouncing and jarring on PACCAR's test track. Test experience on an earlier version of the DTTEG on the same track showed the need for design modifications incorporated in DTTEG Mod 2, such as a heavy duty shock mounting system and reinforcement of the electrical leads mounting system, the thermocouple mounting system and the thermoelectric module restraints. The conclusion of the 543,000 mile test also pointed the way for an upgrading to heavy duty hose or flex connections for the internal coolant connections for the TEG, and consideration of a separate lower temperature cooling loop with its own radiator. Fuel savings of up to $750 per year and a three to five year payback are believed to be possible with the 5 % efficiency modules. The economics are expected to improve considerably to approach a two year payback when the 5 kW to 10 kW generators make it to the market in a few years with a higher efficiency (20%) thermoelectric module system called Quantum Wells, which are currently under development by Hi-Z. Ultimately, as automation takes over to reduce material and labor costs in the high volume production of QW modules, a one year payback for the 5 kW to10 kW generator appears possible. This was one of the stated goals at the beginning of the project. At some future point in time, with the DTTEG becoming standard equipment on all trucks and automobiles, fuel savings from the 25% conversion of exhaust heat to useable electricity nationwide equates to a 10% reduction in the 12 to 15 million barrels per day of

  15. A Ball Lightning Model as a Possible Explanation of Recently Reported Cavity Lights

    SciTech Connect (OSTI)

    Fryberger, David; /SLAC

    2009-08-04

    The salient features of cavity lights, in particular, mobile luminous objects (MLO's), as have been experimentally observed in superconducting accelerator cavities, are summarized. A model based upon standard electromagnetic interactions between a small particle and the 1.5 GHz cavity excitation field is described. This model can explain some features of these data, in particular, the existence of particle orbits without wall contact. While this result is an important success for the model, it is detailed why the model as it stands is incomplete. It is argued that no avenues for a suitable extension of the model through established physics appear evident, which motivates an investigation of a model based upon a more exotic object, ball lightning. As discussed, further motivation derives from the fact that there are significant similarities in many of the qualitative features of ball lightning and MLO's, even though they appear in quite different circumstances and differ in scale by orders of magnitude. The ball lightning model, which incorporates electromagnetic charges and currents, is based on a symmetrized set of Maxwell's equations in which the electromagnetic sources and fields are characterized by a process called dyality rotation. It is shown that a consistent mathematical description of dyality rotation as a physical process can be achieved by adding suitable (phenomenological) current terms to supplement the usual current terms in the symmetrized Maxwell's equations. These currents, which enable the conservation of electric and magnetic charge, are called vacuum currents. It is shown that the proposed ball lightning model offers a good qualitative explanation of the perplexing aspects of the MLO data. Avenues for further study are indicated.

  16. SuperTruck Making Leaps in Fuel Efficiency | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    SuperTruck Making Leaps in Fuel Efficiency SuperTruck Making Leaps in Fuel Efficiency February 19, 2014 - 12:37pm Addthis This Class 8 tractor-trailer by heavy-duty manufacturers Cummins and Peterbilt reaches more than 10 miles per gallon under real world driving conditions. The truck was on display at the Energy Department today. | Photo by <a href="http://www.energy.gov/contributors/sarah-gerrity">Sarah Gerrity</a>, Energy Department This Class 8 tractor-trailer by

  17. SuperTruck … Development and Demonstration of a Fuel-Efficient Class 8

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Tractor & Trailer | Department of Energy SuperTruck … Development and Demonstration of a Fuel-Efficient Class 8 Tractor & Trailer SuperTruck … Development and Demonstration of a Fuel-Efficient Class 8 Tractor & Trailer 2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting vss064_jadin_2012_o.pdf (2.16 MB) More Documents & Publications SuperTruck … Development and Demonstration of a Fuel-Efficient Class 8

  18. SCR Systems for Heavy Duty Trucks: Progress Towards Meeting Euro 4 Emission

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Standards in 2005 | Department of Energy Systems for Heavy Duty Trucks: Progress Towards Meeting Euro 4 Emission Standards in 2005 SCR Systems for Heavy Duty Trucks: Progress Towards Meeting Euro 4 Emission Standards in 2005 2003 DEER Conference Presentation: PUREM 2003_deer_frank.pdf (716.31 KB) More Documents & Publications The PUREM SCR System with AdBlue State-of-the-Art and Emergin Truck Engine Technologies Ensuring the Availability and Reliability of Urea Dosing For On-Road and

  19. Non-uniform Aging on Super Duty Diesel Truck Aged Urea Cu/Zeolite SCR

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Catalysts | Department of Energy uniform Aging on Super Duty Diesel Truck Aged Urea Cu/Zeolite SCR Catalysts Non-uniform Aging on Super Duty Diesel Truck Aged Urea Cu/Zeolite SCR Catalysts Cu/Zeolite SCR catalysts aged for 50k miles on a Super Duty diesel truck deer10_cheng.pdf (950.84 KB) More Documents & Publications Deactivation Mechanisms of Base Metal/Zeolite Urea Selective Catalytic Reduction Materials, and Development of Zeolite-Based Hydrocarbon Adsorber Materials Deactivation

  20. Alternative-fueled truck demonstration natural gas program: Caterpillar G3406LE development and demonstration

    SciTech Connect (OSTI)

    1995-06-01

    In 1990, the California Energy Commission, the South Coast Air Quality Management District, and the Southern California Gas Company joined together to sponsor the development and demonstration of compressed natural gas engines for Class 8 heavy-duty line-haul trucking applications. This program became part of an overall Alternative-Fueled Truck Demonstration Program, with the goal of advancing the technological development of alternative-fueled engines. The demonstration showed natural gas to be a technically viable fuel for Class 8 truck engines.

  1. Fact #721: April 2, 2012 Heavy Trucks Move Freight Efficiently | Department

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    of Energy 1: April 2, 2012 Heavy Trucks Move Freight Efficiently Fact #721: April 2, 2012 Heavy Trucks Move Freight Efficiently Though discussions of vehicle efficiency are often centered on a measurement of miles per gallon, it is also important to consider how efficiently a vehicle carries its payload. Although heavy vehicles like buses or class 8 trucks get much fewer miles per gallon than cars, a greater percentage of their mass is payload which means that they are much more efficient at

  2. EERE Success Story-California: SQAMD Replaces Drayage Trucks with CNG |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy SQAMD Replaces Drayage Trucks with CNG EERE Success Story-California: SQAMD Replaces Drayage Trucks with CNG November 6, 2013 - 12:00am Addthis In 2008, the South Coast Air Quality Management District (AQMD) Heavy-Duty Natural Gas Drayage Truck Replacement Program started to address a significant need to reduce diesel emissions and associated public health risks from goods movement at the Ports of Los Angeles and Long Beach. In 2010, the two ports processed goods worth

  3. SuperTruck … Development and Demonstration of a Fuel-Efficient Class 8

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Tractor & Trailer | Department of Energy 3 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting vss064_oehlerking_2013_o.pdf (2.41 MB) More Documents & Publications SuperTruck … Development and Demonstration of a Fuel-Efficient Class 8 Tractor & Trailer SuperTruck … Development and Demonstration of a Fuel-Efficient Class 8 Tractor & Trailer Vehicle Technologies Office Merit Review 2015: SuperTruck - Development

  4. Assessment of the Emissions Behavior of Higher Mileage Class-8 Trucks and

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Engines | Department of Energy the Emissions Behavior of Higher Mileage Class-8 Trucks and Engines Assessment of the Emissions Behavior of Higher Mileage Class-8 Trucks and Engines Study of in-use emission levels of trucks near the mid-point of their regulatory useful life, including PEMS (on-road) testing as well as engine dynamometer testing p-11_smith.pdf (52.45 KB) More Documents & Publications Recent Research to Address Technical Barriers to Increased Use of Biodiesel Diesel NOx-PM

  5. Technical documentation for the 1990 Nationwide Truck Activity and Commodity Survey Public Use File

    SciTech Connect (OSTI)

    Not Available

    1992-09-01

    The Nationwide Truck Activity and Commodity Survey (NTACS) provides detailed activity data for a sample of trucks covered in the 1987 Truck Inventory and Use Survey (TIUS) for days selected at random over a 12-month period ending in 1990. The NTACS was conducted by the US Bureau of the Census for the US Department of Transportation (DOT). A Public Use File for the NTACS was developed by Oak Ridge National Laboratory (ORNL) under a reimbursable agreement with the DOT. The content of the Public Use File and the design of the NTACS are described in this document.

  6. Vehicle Technologies Office Merit Review 2014: SuperTruck Program: Engine Project Review

    Broader source: Energy.gov [DOE]

    Presentation given by Detroit Diesel Corporation at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about SuperTruck Program...

  7. Goodyear Testing Self-Inflating Tire Systems in U.S. Trucking Fleets

    Broader source: Energy.gov [DOE]

    The Goodyear Tire & Rubber Company is demonstrating its award-winning self-inflating tires by testing the Air Maintenance Technology (AMT) on U.S. trucking fleets. Goodyear has received...

  8. Vehicle Technologies Office Merit Review 2014: Volvo SuperTruck- Powertrain Technologies for Efficiency Improvement

    Broader source: Energy.gov [DOE]

    Presentation given by Volvo at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about Volvo SuperTruck powertrain...

  9. Fact #899: November 16, 2015 World Production of Cars and Trucks...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    In 2013, China was the largest producer of both cars and trucks. In 2000, Japan produced ... World Production of Cars, 1983-2013 (thousands) Year China Japan Germany U.S. Brazil India ...

  10. Fact #846: November 10, 2014 Trucks Move 70% of all Freight by...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Notes: Air transport includes truck and air. The CFS data for pipeline exclude most shipments of crude oil. Multiple modes includes data for parcel, U.S. Postal Service, or ...

  11. Vehicle Technologies Office Merit Review 2015: SuperTruck Program: Engine Project Review

    Broader source: Energy.gov [DOE]

    Presentation given by Detroit Diesel at 2015 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about SuperTruck program: engine...

  12. The Evaluation of Developing Vehicle Technologies on the Fuel Economy of Long-Haul Trucks

    SciTech Connect (OSTI)

    Gao, Zhiming; Smith, David E.; Daw, C. Stuart; Edwards, Kevin Dean; Kaul, Brian C.; Domingo, Norberto; Parks, II, James E.; Jones, Perry T.

    2015-12-01

    We present fuel savings estimates resulting from the combined implementation of multiple advanced energy management technologies in both conventional and parallel hybrid class 8 diesel trucks. The energy management technologies considered here have been specifically targeted by the 21st Century Truck Partnership (21 CTP) between the U.S. Department of Energy and U.S. industry and include advanced combustion engines, waste heat recovery, and reductions in auxiliary loads, rolling resistance, aerodynamic drag, and gross vehicle weight. Furthermore, we estimated that combined use of all these technologies in hybrid trucks has the potential to improve fuel economy by more than 60% compared to current conventional trucks, but this requires careful system integration to avoid non-optimal interactions. Major factors to be considered in system integration are discussed.

  13. The Evaluation of Developing Vehicle Technologies on the Fuel Economy of Long-Haul Trucks

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Gao, Zhiming; Smith, David E.; Daw, C. Stuart; Edwards, Kevin Dean; Kaul, Brian C.; Domingo, Norberto; Parks, II, James E.; Jones, Perry T.

    2015-12-01

    We present fuel savings estimates resulting from the combined implementation of multiple advanced energy management technologies in both conventional and parallel hybrid class 8 diesel trucks. The energy management technologies considered here have been specifically targeted by the 21st Century Truck Partnership (21 CTP) between the U.S. Department of Energy and U.S. industry and include advanced combustion engines, waste heat recovery, and reductions in auxiliary loads, rolling resistance, aerodynamic drag, and gross vehicle weight. Furthermore, we estimated that combined use of all these technologies in hybrid trucks has the potential to improve fuel economy by more than 60% compared tomore » current conventional trucks, but this requires careful system integration to avoid non-optimal interactions. Major factors to be considered in system integration are discussed.« less

  14. Fact #929: June 13, 2016 Heavy Truck Speed Limits Are Inconsistent...

    Broader source: Energy.gov (indexed) [DOE]

    Heavy Truck Speed Limits Are Inconsistent fotw929web.xlsx (87.51 KB) More Documents & Publications Fact 923: May 2, 2016 Cylinder Deactivation was Used in More than a Quarter of ...

  15. Development of an ORC system to improve HD truck fuel efficiency

    Broader source: Energy.gov [DOE]

    Describes a waste heat recovery system developed for a class 8 truck engine using an organic Rankine cycle (ORC), which promises fuel economy benefits of up to 6% at cruise conditions

  16. Price of Liquefied U.S. Natural Gas Exports by Truck to Canada...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Canada (Dollars per Thousand Cubic Feet) Price of Liquefied U.S. Natural Gas Exports by Truck to Canada (Dollars per Thousand Cubic Feet) Year Jan Feb Mar Apr May Jun Jul Aug Sep...

  17. Liquefied U.S. Natural Gas Exports by Truck to Canada (Million...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Canada (Million Cubic Feet) Liquefied U.S. Natural Gas Exports by Truck to Canada (Million Cubic Feet) Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2007 2 2008 0 0 0 0 0 0...

  18. Vehicle Technologies Office Merit Review 2015: Zero-Emission Heavy-Duty Drayage Truck Demonstration

    Office of Energy Efficiency and Renewable Energy (EERE)

    Presentation given by SCAQMD at 2015 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about zero-emission heavy-duty drayage truck...

  19. A Quantum Leap for Heavy-Duty Truck Engine Efficiency - Hybrid...

    Broader source: Energy.gov (indexed) [DOE]

    Presentation given at DEER 2006, August 20-24, 2006, Detroit, Michigan. Sponsored by the U.S. DOE's EERE FreedomCar and Fuel Partnership and 21st Century Truck Programs. ...

  20. Fact #787: July 8, 2013 Truck Stop Electrification Reduces Idle Fuel Consumption

    Office of Energy Efficiency and Renewable Energy (EERE)

    The U.S. Department of Transportation mandates that truckers rest for 10 hours after driving for 11 hours, during which time they often park at truck stops idling the engines to provide heating,...

  1. Vehicle Technologies Office Merit Review 2015: Advanced Bus and Truck Radial Materials for Fuel Efficiency

    Broader source: Energy.gov [DOE]

    Presentation given by PPG at 2015 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about advanced bus and truck radial materials...

  2. Norcal Prototype LNG Truck Fleet: Final Data Report. Advanced Technology Vehicle Evaluation: Advanced Vehicle Testing Activity

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    Data Report Norcal Prototype LNG Truck Fleet: Final Data Report By Kevin Chandler, Battelle Ken Proc, National Renewable Energy Laboratory February 2005 This report provides detailed data and analyses from the U.S. Department of Energy's evaluation of prototype liquefied natural gas (LNG) waste transfer trucks operated by Norcal Waste Systems, Inc. The final report for this evaluation, published in July 2004, is available from the Alternative Fuels Data Center at www.eere.energy.gov/afdc or by

  3. Vehicle Technologies Office Issues Notice of Intent for SuperTruck II

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Funding Opportunity Announcement | Department of Energy SuperTruck II Funding Opportunity Announcement Vehicle Technologies Office Issues Notice of Intent for SuperTruck II Funding Opportunity Announcement February 10, 2016 - 10:40am Addthis The Vehicle Technologies Office (VTO) has issued a Notice of Intent (No. DE-FOA-0001447) to make interested parties aware of its plan to issue a Funding Opportunity Announcement entitled "Advanced Systems Level Technology Development, Integration

  4. Real-World Greenhouse Gas Emissions from a MY2010 Diesel Truck Traveling

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Across the Continental United States | Department of Energy Real-World Greenhouse Gas Emissions from a MY2010 Diesel Truck Traveling Across the Continental United States Real-World Greenhouse Gas Emissions from a MY2010 Diesel Truck Traveling Across the Continental United States Data analysis from this study will provide insight into real-world performance of current emissions reduction devices, under various operating conditions, and with respect to greenhouse gas emissions. p-03_carder.pdf

  5. Development and Demonstration of a Fuel-Efficient HD Engine (DOE SuperTruck

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Program) | Department of Energy Engine (DOE SuperTruck Program) Development and Demonstration of a Fuel-Efficient HD Engine (DOE SuperTruck Program) Discusses engine efficiency contributions of enhanced fuel injection rematched to new piston geometry, improved charge air system, revised base engine components reduce friction and turbocompounding. deer11_deojeda.pdf (2.06 MB) More Documents & Publications Development and Demonstration of a Fuel-Efficient HD Engine

  6. HEAVY-DUTY TRUCK EMISSIONS AND FUEL CONSUMPTION SIMULATING REAL-WORLD

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    DRIVING IN LABORATORY CONDITIONS | Department of Energy HEAVY-DUTY TRUCK EMISSIONS AND FUEL CONSUMPTION SIMULATING REAL-WORLD DRIVING IN LABORATORY CONDITIONS HEAVY-DUTY TRUCK EMISSIONS AND FUEL CONSUMPTION SIMULATING REAL-WORLD DRIVING IN LABORATORY CONDITIONS 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_erkkila.pdf (398.95 KB) More Documents & Publications Evaluating Exhaust Emission Performance of Urban Buses Using Transient Heavy-Duty

  7. Organic Rankine Cycle Turbine for Exhaust Energy Recovery in a Heavy Truck

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Engine | Department of Energy Turbine for Exhaust Energy Recovery in a Heavy Truck Engine Organic Rankine Cycle Turbine for Exhaust Energy Recovery in a Heavy Truck Engine Presentation given at the 16th Directions in Engine-Efficiency and Emissions Research (DEER) Conference in Detroit, MI, September 27-30, 2010. deer10_baines.pdf (807.9 KB) More Documents & Publications Two-Stage Variable Compression Ratio (VCR) System to Increase Efficiency in Gasoline Powertrains Environmental Effects

  8. DOE Selects Two Small Businesses to Truck Transuranic Waste to New Mexico

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Waste Isolation Pilot Plant | Department of Energy Selects Two Small Businesses to Truck Transuranic Waste to New Mexico Waste Isolation Pilot Plant DOE Selects Two Small Businesses to Truck Transuranic Waste to New Mexico Waste Isolation Pilot Plant January 9, 2012 - 12:00pm Addthis Media Contact Bill Taylor 803-952-8564 bill.taylor@srs.gov Cincinnati - The Department of Energy (DOE) today awarded two small-business contracts to CAST Specialty Transportation, Inc. and Visionary Solutions,

  9. 21st Century Truck Partnership Roadmap Roadmap and Technical White Papers -

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    21CTP-0003, December 2006 | Department of Energy Roadmap Roadmap and Technical White Papers - 21CTP-0003, December 2006 21st Century Truck Partnership Roadmap Roadmap and Technical White Papers - 21CTP-0003, December 2006 Report on specific technology goals that will reduce fuel usage and emissions while increasing heavy vehicle safety. 21ctp_roadmap_2007.pdf (1.7 MB) More Documents & Publications Roadmap and Technical White Papers for 21st Century Truck Partnership The 21st Century

  10. At its Largest Truck Plant, Volvo Recognized for Leadership in Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Efficiency | Department of Energy At its Largest Truck Plant, Volvo Recognized for Leadership in Energy Efficiency At its Largest Truck Plant, Volvo Recognized for Leadership in Energy Efficiency April 1, 2014 - 3:37pm Addthis NEWS MEDIA CONTACT (202) 586-4940 DUBLIN, Va. - Building on President Obama's Better Buildings Initiative and the Administration's broader efforts to double energy productivity by 2030, the Department of Energy today recognized Volvo Group North America for its

  11. Analysis of Corporate Average Fuel Economy (CAFE) Standards for Light Trucks and Increased Alternative Fuel Use

    Reports and Publications (EIA)

    2002-01-01

    Sen. Frank Murkowski, the Ranking Minority Member of the Senate Committee on Energy and Natural Resources requested an analysis of selected portions of Senate Bill 1766 (S. 1766, the Energy Policy Act of 2002), House Resolution 4 (the Securing America's Future Energy Act of 2001) and Senate Bill 517 (S. 517, the Energy Policy Act of 2002). In response, the Energy Information Administration (EIA) has prepared a series of analyses showing the impacts of each of the selected provisions of the bills on energy supply, demand, and prices, macroeconomic variables where feasible, import dependence, and emissions.

  12. Vehicle Technologies Office Merit Review 2014: High Strength, Light-Weight Engines for Heavy Duty Trucks

    Broader source: Energy.gov [DOE]

    Presentation given by Oak Ridge National Laboratory at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about high strength,...

  13. Fact #714: February 13, 2012 Light Truck Sales on the Rise |...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    10.7 3.3 14.0 1980 8.9 2.2 11.2 1981 8.5 2.1 10.5 1982 8.0 2.4 10.4 1983 9.1 3.0 12.1 1984 10.3 3.9 14.2 1985 11.0 4.5 15.4 1986 11.4 4.7 16.1 1987 10.2 4.7 14.9 1988 10.5 4.9 ...

  14. Fact #693: September 19, 2011 Average Vehicle Footprint for Cars and Light Trucks

    Broader source: Energy.gov [DOE]

    A vehicle footprint is the area defined by the four points where the tires touch the ground. It is calculated as the product of the wheelbase and the average track width of the vehicle. The...

  15. Fact #725: April 30, 2012 Cylinder Deactivation is More Prevalent in Light Trucks than Cars

    Broader source: Energy.gov [DOE]

    Cylinder deactivation is a fuel-saving technology that allows a vehicle to shut down some of its cylinders when extra power is not needed like when cruising down the highway at a constant speed....

  16. Fact #720: March 26, 2012 Eleven Percent of New Light Trucks Sold have Gasoline Direct Injection

    Broader source: Energy.gov [DOE]

    Gasoline direct fuel injection (GDI) allows fuel to be injected directly into the cylinder so the timing and shape of the fuel mist can be controlled more precisely. The improved combustion and...

  17. Light output measurements and computational models of microcolumnar CsI scintillators for x-ray imaging

    SciTech Connect (OSTI)

    Nillius, Peter Klamra, Wlodek; Danielsson, Mats; Sibczynski, Pawel; Sharma, Diksha; Badano, Aldo

    2015-02-15

    Purpose: The authors report on measurements of light output and spatial resolution of microcolumnar CsI:Tl scintillator detectors for x-ray imaging. In addition, the authors discuss the results of simulations aimed at analyzing the results of synchrotron and sealed-source exposures with respect to the contributions of light transport to the total light output. Methods: The authors measured light output from a 490-?m CsI:Tl scintillator screen using two setups. First, the authors used a photomultiplier tube (PMT) to measure the response of the scintillator to sealed-source exposures. Second, the authors performed imaging experiments with a 27-keV monoenergetic synchrotron beam and a slit to calculate the total signal generated in terms of optical photons per keV. The results of both methods are compared to simulations obtained with hybridMANTIS, a coupled x-ray, electron, and optical photon Monte Carlo transport package. The authors report line response (LR) and light output for a range of linear absorption coefficients and describe a model that fits at the same time the light output and the blur measurements. Comparing the experimental results with the simulations, the authors obtained an estimate of the absorption coefficient for the model that provides good agreement with the experimentally measured LR. Finally, the authors report light output simulation results and their dependence on scintillator thickness and reflectivity of the backing surface. Results: The slit images from the synchrotron were analyzed to obtain a total light output of 48 keV{sup ?1} while measurements using the fast PMT instrument setup and sealed-sources reported a light output of 28 keV{sup ?1}. The authors attribute the difference in light output estimates between the two methods to the difference in time constants between the camera and PMT measurements. Simulation structures were designed to match the light output measured with the camera while providing good agreement with the

  18. Fact #572: May 25, 2009 CAFE Standards for Model Year 2011 | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Energy 2: May 25, 2009 CAFE Standards for Model Year 2011 Fact #572: May 25, 2009 CAFE Standards for Model Year 2011 On March 30, 2009, the National Highway Traffic Safety Administration (NHTSA) published the final rule for model year (MY) 2011 car and light truck Corporate Average Fuel Economy (CAFE) standards. In this rule, the fuel economy targets are set by taking into account the size of the vehicle as measured by the vehicle footprint [the distance between the wheels (width) multiplied

  19. Light-absorbing Particles in Snow and Ice: Measurement and Modeling of Climatic and Hydrological Impact

    SciTech Connect (OSTI)

    Qian, Yun; Yasunari, Teppei J.; Doherty, Sarah J.; Flanner, M. G.; Lau, William K.; Ming, J.; Wang, Hailong; Wang, Mo; Warren, Stephen G.; Zhang, Rudong

    2015-01-01

    Light absorbing particles (LAP, e.g., black carbon, brown carbon, and dust) influence water and energy budgets of the atmosphere and snowpack in multiple ways. In addition to their effects associated with atmospheric heating by absorption of solar radiation and interactions with clouds, LAP in snow on land and ice can reduce the surface reflectance (a.k.a., surface darkening), which is likely to accelerate the snow aging process and further reduces snow albedo and increases the speed of snowpack melt. LAP in snow and ice (LAPSI) has been identified as one of major forcings affecting climate change, e.g. in the fourth and fifth assessment reports of IPCC. However, the uncertainty level in quantifying this effect remains very high. In this review paper, we document various technical methods of measuring LAPSI and review the progress made in measuring the LAPSI in Arctic, Tibetan Plateau and other mid-latitude regions. We also report the progress in modeling the mass concentrations, albedo reduction, radiative forcing, andclimatic and hydrological impact of LAPSI at global and regional scales. Finally we identify some research needs for reducing the uncertainties in the impact of LAPSI on global and regional climate and the hydrological cycle.

  20. Modeling of the performance of weapons MOX fuel in light water reactors

    SciTech Connect (OSTI)

    Alvis, J.; Bellanger, P.; Medvedev, P.G.; Peddicord, K.L.; Gellene, G.I.

    1999-05-01

    Both the Russian Federation and the US are pursing mixed uranium-plutonium oxide (MOX) fuel in light water reactors (LWRs) for the disposition of excess plutonium from disassembled nuclear warheads. Fuel performance models are used which describe the behavior of MOX fuel during irradiation under typical power reactor conditions. The objective of this project is to perform the analysis of the thermal, mechanical, and chemical behavior of weapons MOX fuel pins under LWR conditions. If fuel performance analysis indicates potential questions, it then becomes imperative to assess the fuel pin design and the proposed operating strategies to reduce the probability of clad failure and the associated release of radioactive fission products into the primary coolant system. Applying the updated code to anticipated fuel and reactor designs, which would be used for weapons MOX fuel in the US, and analyzing the performance of the WWER-100 fuel for Russian weapons plutonium disposition are addressed in this report. The COMETHE code was found to do an excellent job in predicting fuel central temperatures. Also, despite minor predicted differences in thermo-mechanical behavior of MOX and UO{sub 2} fuels, the preliminary estimate indicated that, during normal reactor operations, these deviations remained within limits foreseen by fuel pin design.

  1. Three-dimensional finite element impact analysis of a nuclear waste truck cask

    SciTech Connect (OSTI)

    Miller, J.D.

    1985-05-01

    A three-dimensional finite element impact analysis of a hypothetical accident event for the preliminary design of a shipping cask to be used to transport radioactive waste by standard tractor-semitrailer truck is presented. The dynamic structural analysis code DYNA3D, run on Sandia's Cray-1 computer, was used to calculate the effects of the closure-end of the cask impacting a rigid, frictionless surface on an edge of its external impact limiter after a 30-foot fall. The center of gravity of the 304 stainless steel and depleted uranium cask was assumed to be directly above the impact point. An elastic-plastic material constitutive model was used to calculate the nonlinear response of the cask components to the transient loading. Results from the calculations show the cask sustained large localized deformations. However, these were almost entirely confined to the impact limiters built into the cask. The closure sections were determined to remain intact and leakage would not be expected after the event. Interactive color computer graphics were used throughout the analysis, proving to be extremely helpful for generation and verification of the geometry and boundary conditions of the finite element model and for interpretation of the analysis results. 12 refs., 29 figs., 4 tabs.

  2. Performance of Linear and Nonlinear Two-Leaf Light Use Efficiency Models at Different Temporal Scales

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Wu, Xiaocui; Ju, Weimin; Zhou, Yanlian; He, Mingzhu; Law, Beverly E.; Black, T. Andrew; Margolis, Hank A.; Cescatti, Alessandro; Gu, Lianhong; Montagni, Leonardo; et al

    2015-02-25

    The reliable simulation of gross primary productivity (GPP) at various spatial and temporal scales is of significance to quantifying the net exchange of carbon between terrestrial ecosystems and the atmosphere. This study aimed to verify the ability of a nonlinear two-leaf model (TL-LUEn), a linear two-leaf model (TL-LUE), and a big-leaf light use efficiency model (MOD17) to simulate GPP at half-hourly, daily and 8-day scales using GPP derived from 58 eddy-covariance flux sites in Asia, Europe and North America as benchmarks. Model evaluation showed that the overall performance of TL-LUEn was slightly but not significantly better than TL-LUE at half-hourlymore » and daily scale, while the overall performance of both TL-LUEn and TL-LUE were significantly better (p < 0.0001) than MOD17 at the two temporal scales. The improvement of TL-LUEn over TL-LUE was relatively small in comparison with the improvement of TL-LUE over MOD17. However, the differences between TL-LUEn and MOD17, and TL-LUE and MOD17 became less distinct at the 8-day scale. As for different vegetation types, TL-LUEn and TL-LUE performed better than MOD17 for all vegetation types except crops at the half-hourly scale. At the daily and 8-day scales, both TL-LUEn and TL-LUE outperformed MOD17 for forests. However, TL-LUEn had a mixed performance for the three non-forest types while TL-LUE outperformed MOD17 slightly for all these non-forest types at daily and 8-day scales. The better performance of TL-LUEn and TL-LUE for forests was mainly achieved by the correction of the underestimation/overestimation of GPP simulated by MOD17 under low/high solar radiation and sky clearness conditions. TL-LUEn is more applicable at individual sites at the half-hourly scale while TL-LUE could be regionally used at half-hourly, daily and 8-day scales. MOD17 is also an applicable option regionally at the 8-day scale.« less

  3. Performance of Linear and Nonlinear Two-Leaf Light Use Efficiency Models at Different Temporal Scales

    SciTech Connect (OSTI)

    Wu, Xiaocui; Ju, Weimin; Zhou, Yanlian; He, Mingzhu; Law, Beverly E.; Black, T. Andrew; Margolis, Hank A.; Cescatti, Alessandro; Gu, Lianhong; Montagni, Leonardo; Noormets, Asko; Griffis, Timothy J.; Pilegaard, Kim; Varlagin, Andrej; Valentini, Riccardo; Blanken, Peter D.; Wang, Shaoquiang; Wang, Huimin; Han, Shijie; Yan, Junhau; Li, Yingnian; Zhou, Bingbing; Liu, Yibo

    2015-02-25

    The reliable simulation of gross primary productivity (GPP) at various spatial and temporal scales is of significance to quantifying the net exchange of carbon between terrestrial ecosystems and the atmosphere. This study aimed to verify the ability of a nonlinear two-leaf model (TL-LUEn), a linear two-leaf model (TL-LUE), and a big-leaf light use efficiency model (MOD17) to simulate GPP at half-hourly, daily and 8-day scales using GPP derived from 58 eddy-covariance flux sites in Asia, Europe and North America as benchmarks. Model evaluation showed that the overall performance of TL-LUEn was slightly but not significantly better than TL-LUE at half-hourly and daily scale, while the overall performance of both TL-LUEn and TL-LUE were significantly better (p < 0.0001) than MOD17 at the two temporal scales. The improvement of TL-LUEn over TL-LUE was relatively small in comparison with the improvement of TL-LUE over MOD17. However, the differences between TL-LUEn and MOD17, and TL-LUE and MOD17 became less distinct at the 8-day scale. As for different vegetation types, TL-LUEn and TL-LUE performed better than MOD17 for all vegetation types except crops at the half-hourly scale. At the daily and 8-day scales, both TL-LUEn and TL-LUE outperformed MOD17 for forests. However, TL-LUEn had a mixed performance for the three non-forest types while TL-LUE outperformed MOD17 slightly for all these non-forest types at daily and 8-day scales. The better performance of TL-LUEn and TL-LUE for forests was mainly achieved by the correction of the underestimation/overestimation of GPP simulated by MOD17 under low/high solar radiation and sky clearness conditions. TL-LUEn is more applicable at individual sites at the half-hourly scale while TL-LUE could be regionally used at half-hourly, daily and 8-day scales. MOD17 is also an applicable option regionally at the 8-day scale.

  4. Project Results: Evaluating FedEx Express Hybrid-Electric Delivery Trucks (Fact Sheet), Vehicle Technologies Program (VTP)

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Renewable Energy Laboratory's (NREL's) Fleet Test and Evaluation Team evaluated the 12-month, in-service performance of three Class 4 gasoline hybrid-electric delivery trucks and three comparable conventional diesel trucks operated by FedEx Express in Southern California. In addition, the tailpipe emissions and fuel economy of one of the gasoline hybrid-electric vehicles (gHEVs) and one diesel truck were tested on a chassis dynamometer. The gHEVs were equipped with a parallel hybrid system

  5. Project Results: Evaluating FedEx Express Hybrid-Electric Delivery Trucks (Fact Sheet), Vehicle Technologies Program (VTP)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Renewable Energy Laboratory's (NREL's) Fleet Test and Evaluation Team evaluated the 12-month, in-service performance of three Class 4 gasoline hybrid-electric delivery trucks and three comparable conventional diesel trucks operated by FedEx Express in Southern California. In addition, the tailpipe emissions and fuel economy of one of the gasoline hybrid-electric vehicles (gHEVs) and one diesel truck were tested on a chassis dynamometer. The gHEVs were equipped with a parallel hybrid system

  6. Demonstration Project 111, ITS/CVO Technology Truck, Final Project Report

    SciTech Connect (OSTI)

    Gambrell, KP

    2002-01-11

    In 1995, the planning and building processes began to design and develop a mobile demonstration unit that could travel across the nation and be used as an effective outreach tool. In 1997, the unit was completed; and from June 1997 until December 2000, the Federal Highway Administration (FHWA)/Federal Motor Carrier Safety Administration (FMCSA) mobilized the Technology Truck, also known as Demonstration Project No. 111, ''Advanced Motor Carrier Operations and Safety Technologies.'' The project featured the latest available state-of-the-practice intelligent transportation systems (ITS) technologies designed to improve both the efficiency and safety of commercial vehicle operations (CVO). The Technology Truck was designed to inform and educate the motor carrier community and other stakeholders regarding ITS technologies, thus gaining support and buy-in for participation in the ITS program. The primary objective of the project was to demonstrate new and emerging ITS/CVO technologies and programs, showing their impact on motor carrier safety and productivity. In order to meet the objectives of the Technology Truck project, the FHWA/FMCSA formed public/private partnerships with industry and with Oak Ridge National Laboratory to demonstrate and display available ITS/CVO technologies in a cooperative effort. The mobile demonstration unit was showcased at national and regional conferences, symposiums, universities, truck shows and other venues, in an effort to reach as many potential users and decision makers as possible. By the end of the touring phase, the ITS/CVO Technology Truck had been demonstrated in 38 states, 4 Canadian provinces, 88 cities, and 114 events; been toured by 18,099 people; and traveled 115,233 miles. The market penetration for the Technology Truck exceeded 4,000,000, and the website received more than 25,000 hits. In addition to the Truck's visits, the portable ITS/CVO kiosk was demonstrated at 31 events in 23 cites in 15 states.

  7. Transportation Sector Demand Module of the National Energy Modeling...

    Gasoline and Diesel Fuel Update (EIA)

    and historic yearly values for car prices at different production levels by applying an additive adjustment to the price of a gasoline-fueled vehicle. a) Car and Light Truck at...

  8. Fuel comsumption of heavy-duty trucks : potential effect of future technologies for improving energy efficiency and emission.

    SciTech Connect (OSTI)

    Saricks, C. L.; Vyas, A. D.; Stodolsky, F.; Maples, J. D.; Energy Systems; USDOE

    2003-01-01

    The results of an analysis of heavy-duty truck (Classes 2b through 8) technologies conducted to support the Energy Information Administration's long-term projections for energy use are summarized. Several technology options that have the potential to improve the fuel economy and emissions characteristics of heavy-duty trucks are included in the analysis. The technologies are grouped as those that enhance fuel economy and those that improve emissions. Each technology's potential impact on the fuel economy of heavy-duty trucks is estimated. A rough cost projection is also presented. The extent of technology penetration is estimated on the basis of truck data analyses and technical judgment.

  9. The potential effect of future energy-efficiency and emissions-improving technologies on fuel consumption of heavy trucks.

    SciTech Connect (OSTI)

    Vyas, A.; Saricks, C.; Stodolsky, F.

    2003-03-14

    Researchers at Argonne National Laboratory analyzed heavy-duty truck technologies to support the Energy Information Administration's long-term energy use projections. Researchers conducted an analysis of several technology options that have potential to improve heavy truck fuel economy and emissions characteristics. The technologies are grouped as fuel-economy-enhancing and emissions-improving. Each technology's potential impact on heavy truck fuel economy has been estimated, as has the cost of implementation. The extent of technology penetration is estimated on the basis of truck data analyses and technical judgment.

  10. A Review of Stress Corrosion Cracking/Fatigue Modeling for Light Water Reactor Cooling System Components

    Broader source: Energy.gov [DOE]

    In the United States currently there are approximately 104 operating light water reactors. Of these, 69 are pressurized water reactors (PWRs) and 35 are boiling water reactors (BWRs). In 2007, the...

  11. Model Year 2012 Fuel Economy Guide: EPA Fuel Economy Estimates

    SciTech Connect (OSTI)

    2011-11-01

    The Fuel Economy Guide is published by the U.S. Department of Energy as an aid to consumers considering the purchase of a new vehicle. The Guide lists estimates of miles per gallon (mpg) for each vehicle available for the new model year. These estimates are provided by the U.S. Environmental Protection Agency in compliance with Federal Law. By using this Guide, consumers can estimate the average yearly fuel cost for any vehicle. The Guide is intended to help consumers compare the fuel economy of similarly sized cars, light duty trucks and special purpose vehicles.

  12. Model Year 2013 Fuel Economy Guide: EPA Fuel Economy Estimates

    SciTech Connect (OSTI)

    2012-12-01

    The Fuel Economy Guide is published by the U.S. Department of Energy as an aid to consumers considering the purchase of a new vehicle. The Guide lists estimates of miles per gallon (mpg) for each vehicle available for the new model year. These estimates are provided by the U.S. Environmental Protection Agency in compliance with Federal Law. By using this Guide, consumers can estimate the average yearly fuel cost for any vehicle. The Guide is intended to help consumers compare the fuel economy of similarly sized cars, light duty trucks and special purpose vehicles.

  13. Model Year 2011 Fuel Economy Guide: EPA Fuel Economy Estimates

    SciTech Connect (OSTI)

    2010-11-01

    The Fuel Economy Guide is published by the U.S. Department of Energy as an aid to consumers considering the purchase of a new vehicle. The Guide lists estimates of miles per gallon (mpg) for each vehicle available for the new model year. These estimates are provided by the U.S. Environmental Protection Agency in compliance with Federal Law. By using this Guide, consumers can estimate the average yearly fuel cost for any vehicle. The Guide is intended to help consumers compare the fuel economy of similarly sized cars, light duty trucks and special purpose vehicles.

  14. Exploring Fuel-Saving Potential of Long-Haul Truck Hybridization

    SciTech Connect (OSTI)

    Gao, Zhiming; LaClair, Tim J.; Smith, David E.; Daw, C. Stuart

    2015-10-01

    We report our comparisons on the simulated fuel economy for parallel, series, and dual-mode hybrid electric long-haul trucks, in addition to a conventional powertrain configuration, powered by a commercial 2010-compliant 15-L diesel engine over a freeway-dominated heavy-duty truck driving cycle. The driving cycle was obtained by measurement during normal driving conditions. The results indicated that both parallel and dual-mode hybrid powertrains were capable of improving fuel economy by 7% to 8%. But there was no significant fuel economy benefit for the series hybrid truck because of internal inefficiencies in energy exchange. When reduced aerodynamic drag and tire rolling resistance were combined with hybridization, there was a synergistic fuel economy benefit for appropriate hybrids that increased the fuel economy benefit to more than 15%. Long-haul hybrid trucks with reduced aerodynamic drag and rolling resistance offered lower peak engine loads, better kinetic energy recovery, and reduced average engine power demand. Therefore, it is expected that hybridization with load reduction technologies offers important potential fuel energy savings for future long-haul trucks.

  15. Exploring Fuel-Saving Potential of Long-Haul Truck Hybridization

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Gao, Zhiming; LaClair, Tim J.; Smith, David E.; Daw, C. Stuart

    2015-10-01

    We report our comparisons on the simulated fuel economy for parallel, series, and dual-mode hybrid electric long-haul trucks, in addition to a conventional powertrain configuration, powered by a commercial 2010-compliant 15-L diesel engine over a freeway-dominated heavy-duty truck driving cycle. The driving cycle was obtained by measurement during normal driving conditions. The results indicated that both parallel and dual-mode hybrid powertrains were capable of improving fuel economy by 7% to 8%. But there was no significant fuel economy benefit for the series hybrid truck because of internal inefficiencies in energy exchange. When reduced aerodynamic drag and tire rolling resistance weremore » combined with hybridization, there was a synergistic fuel economy benefit for appropriate hybrids that increased the fuel economy benefit to more than 15%. Long-haul hybrid trucks with reduced aerodynamic drag and rolling resistance offered lower peak engine loads, better kinetic energy recovery, and reduced average engine power demand. Therefore, it is expected that hybridization with load reduction technologies offers important potential fuel energy savings for future long-haul trucks.« less

  16. FedEx Gasoline Hybrid Electric Delivery Truck Evaluation: 6-Month Interim Report

    SciTech Connect (OSTI)

    Barnitt, R.

    2010-05-01

    This interim report presents partial (six months) results for a technology evaluation of gasoline hybrid electric parcel delivery trucks operated by FedEx in and around Los Angeles, CA. A 12 month in-use technology evaluation comparing in-use fuel economy and maintenance costs of GHEVs and comparative diesel parcel delivery trucks was started in April 2009. Comparison data was collected and analyzed for in-use fuel economy and fuel costs, maintenance costs, total operating costs, and vehicle uptime. In addition, this interim report presents results of parcel delivery drive cycle collection and analysis activities as well as emissions and fuel economy results of chassis dynamometer testing of a gHEV and a comparative diesel truck at the National Renewable Energy Laboratory's (NREL) ReFUEL laboratory. A final report will be issued when 12 months of in-use data have been collected and analyzed.

  17. Lighting Developments to 2030

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Lighting Choices to Save You Money Lighting Choices to Save You Money This Energy 101 video explores the different lighting options available to consumers. Light your home using the same amount of light for less money. An average household dedicates about 5% of its energy budget to lighting. Switching to energy-efficient lighting is one of the fastest ways to cut your energy bills. By replacing your home's five most frequently used light fixtures or bulbs with models that have earned the ENERGY

  18. NREL Collaborates with Trucking Industry to Prioritize R&D Opportunities -

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    News Feature | NREL Collaborates with Trucking Industry to Prioritize R&D Opportunities September 15, 2015 Photo of a UPS heavy-duty truck by the NREL entrance sign. NREL's fleet test and evaluation team collaborates with industry partners to conduct real-world performance evaluations of advanced medium- and heavy-duty fleet vehicles. Photo by Dennis Schroeder Six to seven seconds-that's the typical time between a pair of tractor-trailers traveling together at 65 mph. But, through the

  19. Structural safety evaluation of the K Basin railcar and truck applications

    SciTech Connect (OSTI)

    Winkel, B.V.

    1995-08-01

    There are two rail spurs in the storage/transfer areas of both the K East and K West fuel storage basins. These rail spurs both end at the west edge of the basins. To avoid accidental entry of a railcar into a basin, administrative procedures and rail control hardware have been provided. Based upon a combination of historical documentation and existing adminstrative controls, a maximum credible impact accident was established. Using this design basis accident, the existing rail control hardware was evaluated for structural adequacy. The K Basin rail spurs are embedded in concrete, which permits truck/trailer entry into the same area. Safety issues for truck applications are also addressed.

  20. Fact #625: May 31, 2010 Distribution of Trucks by On-Road Vehicle Weight |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy 5: May 31, 2010 Distribution of Trucks by On-Road Vehicle Weight Fact #625: May 31, 2010 Distribution of Trucks by On-Road Vehicle Weight According to weigh-in-motion data collected by fifteen states, the majority of 5-axle tractor-trailers on the road weigh between 33,000 and 73,000 lbs.Eleven percent of the tractor-trailers had weight recorded around 72,800 lbs and 10% around 68,300 lbs. Another 10% of tractor-trailers were on the lighter end of the scale - around

  1. Fact #932: July 4, 2016 Longer Combination Trucks Are Only Permitted on

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Some Routes | Department of Energy 2: July 4, 2016 Longer Combination Trucks Are Only Permitted on Some Routes Fact #932: July 4, 2016 Longer Combination Trucks Are Only Permitted on Some Routes SUBSCRIBE to the Fact of the Week Although all states allow the conventional combinations consisting of two 28-foot semi-trailers, only 14 states and six state turnpike authorities allow longer combination vehicles (LCVs) on some parts of their road networks. LCVs are tractors pulling a semi-trailer

  2. Predicted Impact of Idling Reduction Options for Heavy-Duty Diesel Trucks:

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    A Comparison of Full-Fuel-Cycle Emissions, Energy Use, and Proximity to Urban Populations in Five States | Department of Energy Predicted Impact of Idling Reduction Options for Heavy-Duty Diesel Trucks: A Comparison of Full-Fuel-Cycle Emissions, Energy Use, and Proximity to Urban Populations in Five States Predicted Impact of Idling Reduction Options for Heavy-Duty Diesel Trucks: A Comparison of Full-Fuel-Cycle Emissions, Energy Use, and Proximity to Urban Populations in Five States Poster

  3. Calibraton of a Directly Injected Natural Gas HD Engine for Class 8 Truck

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Applications | Department of Energy Calibraton of a Directly Injected Natural Gas HD Engine for Class 8 Truck Applications Calibraton of a Directly Injected Natural Gas HD Engine for Class 8 Truck Applications This poster offers a comparison of high-pressure direct injection (HPDI) of natural gas engines with pilot diesel ignition with diesel engines used in heavy-duty diesel engine applications deer09_munshi.pdf (69.91 KB) More Documents & Publications State of the Art and Future

  4. Rebound 2007: Analysis of U.S. Light-Duty Vehicle Travel Statistics

    SciTech Connect (OSTI)

    Greene, David L

    2010-01-01

    U.S. national time series data on vehicle travel by passenger cars and light trucks covering the period 1966 2007 are used to test for the existence, size and stability of the rebound effect for motor vehicle fuel efficiency on vehicle travel. The data show a statistically significant effect of gasoline price on vehicle travel but do not support the existence of a direct impact of fuel efficiency on vehicle travel. Additional tests indicate that fuel price effects have not been constant over time, although the hypothesis of symmetry with respect to price increases and decreases is not rejected. Small and Van Dender (2007) model of a declining rebound effect with income is tested and similar results are obtained.

  5. Accident Investigation of the February 5, 2014, Underground Salt Haul Truck Fire at the Waste Isolation Pilot Plant, Carlsbad NM

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy (DOE) Accident Prevention Investigation Board was appointed to investigate a fire at the Waste Isolation Pilot Plant that occurred on February 5, 2014. An aged EIMCO 985-T15 salt haul truck (dump truck) caught fire in an underground mine.

  6. Diesel NOx-PM Reduction with Fuel Economy Increase by IMET-OBC-DPF + Hydrated-EGRŽ System for Retrofit of In-UseŽ Trucks

    Broader source: Energy.gov [DOE]

    Reports on truck fleet emission test results obtained from retrofitting in-useŽ old class-8 trucks with IMETs GreenPower’ DPF-Hydrated-EGR system

  7. Failure Mode Classification for Life Prediction Modeling of Solid-State Lighting

    SciTech Connect (OSTI)

    Sakalaukus, Peter Joseph

    2015-08-01

    Since the passing of the Energy Independence and Security Act of 2007, the U.S. government has mandated greater energy independence which has acted as a catalyst for accelerating and facilitating research efforts toward the development and deployment of market-driven solutions for energy-saving homes, buildings and manufacturing, as well as sustainable transportation and renewable electricity generation. As part of this effort, an emphasis toward advancing solid-state lighting technology through research, development, demonstration, and commercial applications is assisting in the phase out of the common incandescent light bulb, as well as developing a more economical lighting source that is less toxic than compact fluorescent lighting. This has led lighting manufacturers to pursue SSL technologies for a wide range of consumer lighting applications. An SSL luminaire’s lifetime can be characterized in terms of lumen maintenance life. Lumen maintenance or lumen depreciation is the percentage decrease in the relative luminous flux from that of the original, pristine luminous flux value. Lumen maintenance life is the estimated operating time, in hours, when the desired failure threshold is projected to be reached at normal operating conditions. One accepted failure threshold of SSL luminaires is lumen maintenance of 70% -- a 30% reduction in the light output of the luminaire. Currently, the only approved lighting standard that puts forth a recommendation for long-term luminous flux maintenance projections towards a specified failure threshold of an SSL luminaire is the IES TM-28-14 (TM28) standard. iii TM28 was derived as a means to compare luminaires that have been tested at different facilities, research labs or companies. TM28 recommends the use of the Arrhenius equation to determine SSL device specific reaction rates from thermally driven failure mechanisms used to characterize a single failure mode – the relative change in the luminous flux output or “light

  8. REVISITING THE LIGHT CURVES OF GAMMA-RAY BURSTS IN THE RELATIVISTIC TURBULENCE MODEL

    SciTech Connect (OSTI)

    Lin, Da-Bin; Gu, Wei-Min; Hou, Shu-Jin; Liu, Tong; Sun, Mou-Yuan; Lu, Ju-Fu, E-mail: dabinlin@xmu.edu.cn, E-mail: lujf@xmu.edu.cn [Department of Astronomy and Institute of Theoretical Physics and Astrophysics, Xiamen University, Xiamen, Fujian 361005 (China)

    2013-10-10

    Rapid temporal variability has been widely observed in the light curves of gamma-ray bursts (GRBs). One possible mechanism for such variability is related to the relativistic eddies in the jet. In this paper, we include the contribution of the inter-eddy medium together with the eddies to the gamma-ray emission. We show that the gamma-ray emission can either lead or lag behind the observed synchrotron emission, where the latter originates in the inter-eddy medium and provides most of the seed photons for producing gamma-ray emission through inverse Compton scattering. As a consequence, we argue that the lead/lag found in non-stationary short-lived light curves may not reveal the intrinsic lead/lag of different emission components. In addition, our results may explain the lead of gamma-ray emission with respect to optical emission observed in GRB 080319B.

  9. Analysis of Technology Options to Reduce the Fuel Consumption of Idling Trucks

    SciTech Connect (OSTI)

    F. Stodolsky; L. Gaines; A. Vyas

    2000-06-01

    Long-haul trucks idling overnight consume more than 838 million gallons (20 million barrels) of fuel annually. Idling also emits pollutants. Truck drivers idle their engines primarily to (1) heat or cool the cab and/or sleeper, (2) keep the fuel warm in winter, and (3) keep the engine warm in the winter so that the engine is easier to start. Alternatives to overnight idling could save much of this fuel, reduce emissions, and cut operating costs. Several fuel-efficient alternatives to idling are available to provide heating and cooling: (1) direct-fired heater for cab/sleeper heating, with or without storage cooling; (2) auxiliary power units; and (3) truck stop electrification. Many of these technologies have drawbacks that limit market acceptance. Options that supply electricity are economically viable for trucks that are idled for 1,000-3,000 or more hours a year, while heater units could be used across the board. Payback times for fleets, which would receive quantity discounts on the prices, would be somewhat shorter.

  10. Development of LNG-Powered Heavy-Duty Trucks in Commercial Hauling

    SciTech Connect (OSTI)

    Detroit Diesel Corporation; Trucking Research Institute

    1998-12-03

    In support of the U.S. Department of Energy's development, deployment, and evaluation of alternative fuels, NREL and the Trucking Research Institute contracted with Detroit Diesel Corporation (DDC) to develop and operate a liquid natural gas fueled tractor powered by a DDC Series 50 prototype natural gas engine. This is the final report on the project.

  11. NOx Adsorbers for Heavy Duty Truck Engines-Testing and Simulation

    SciTech Connect (OSTI)

    Hakim, N; Hoelzer, J.; Liu, Y.

    2002-08-25

    This feasibility study of NOx adsorbers in heavy-duty diesel engines examined three configurations (dual-leg, single-leg and single-leg-bypass) in an integrated experimental setup, composed of a Detroit Diesel Class-8 truck engine, a catalyzed diesel particulate filter and the NOx absorber system. The setup also employed a reductant injection concept, sensors and advanced control strategies.

  12. Natural Gas as a Fuel for Heavy Trucks: Issues and Incentives (released in AEO2010)

    Reports and Publications (EIA)

    2010-01-01

    Environmental and energy security concerns related to petroleum use for transportation fuels, together with recent growth in U.S. proved reserves and technically recoverable natural gas resources, including shale gas, have sparked interest in policy proposals aimed at stimulating increased use of natural gas as a vehicle fuel, particularly for heavy trucks.

  13. Cummins SuperTruck Program - Technology and System Level Demonstration of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Highly Efficient and Clean, Diesel Powered Class 8 Trucks | Department of Energy 3 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting ace057_koeberlein_2013_o.pdf (3.18

  14. Cummins SuperTruck Program - Technology and System Level Demonstration of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Highly Efficient and Clean, Diesel Powered Class 8 Trucks | Department of Energy 2 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting ace057_koeberlein_2012_o.pdf (1.99

  15. VP 100: Producing Electric Truck Vehicles with a Little Something Extra

    Broader source: Energy.gov [DOE]

    Through a Recovery Act grant, that company - Smith Electric Vehicles (SEV) – is taking a different tact that could lay the foundation for the industry's future. Not only is the company manufacturing all-electric, zero-emission commercial trucks, it's collecting data on how these commercial EVs are used.

  16. Cost-Effective Fabrication Routes for the Production of Quantum Well Structures and Recovery of Waste Heat from Heavy Duty Trucks

    SciTech Connect (OSTI)

    Willigan, Rhonda

    2009-09-30

    The primary objectives of Phase I were: (a) carry out cost, performance and system level models, (b) quantify the cost benefits of cathodic arc and heterogeneous nanocomposites over sputtered material, (c) evaluate the expected power output of the proposed thermoelectric materials and predict the efficiency and power output of an integrated TE module, (d) define market acceptance criteria by engaging Caterpillar's truck OEMs, potential customers and dealers and identify high-level criteria for a waste heat thermoelectric generator (TEG), (e) identify potential TEG concepts, and (f) establish cost/kWatt targets as well as a breakdown of subsystem component cost targets for the commercially viable TEG.

  17. Emission Changes Resulting from the San Pedro Bay, California Ports Truck Retirement Program

    SciTech Connect (OSTI)

    Bishop, G. A.; Schuchmann, B. G.; Stedman, D. H.; Lawson, D. R.

    2012-01-03

    Recent U.S. Environmental Protection Agency emissions regulations have resulted in lower emissions of particulate matter and oxides of nitrogen from heavy-duty diesel trucks. To accelerate fleet turnover the State of California in 2008 along with the Ports of Los Angeles and Long Beach (San Pedro Bay Ports) in 2006 passed regulations establishing timelines forcing the retirement of older diesel trucks. On-road emissions measurements of heavy-duty diesel trucks were collected over a three-year period, beginning in 2008, at a Port of Los Angeles location and an inland weigh station on the Riverside freeway (CA SR91). At the Port location the mean fleet age decreased from 12.7 years in April of 2008 to 2.5 years in May of 2010 with significant reductions in carbon monoxide (30%), oxides of nitrogen (48%) and infrared opacity (a measure of particulate matter, 54%). We also observed a 20-fold increase in ammonia emissions as a result of new, stoichiometrically combusted, liquefied natural gas powered trucks. These results compare with changes at our inland site where the average ages were 7.9 years in April of 2008 and 8.3 years in April of 2010, with only small reductions in oxides of nitrogen (10%) being statistically significant. Both locations have experienced significant increases in nitrogen dioxide emissions from new trucks equipped with diesel particle filters; raising the mean nitrogen dioxide to oxides of nitrogen ratios from less than 10% to more than 30% at the Riverside freeway location.

  18. SCDAP/RELAP5 Modeling of Fluid Heat Transfer and Flow Losses Through Porous Debris in a Light Water Reactor

    SciTech Connect (OSTI)

    Harvego, Edwin Allan; Siefken, Larry James

    2000-04-01

    The SCDAP/RELAP5 code is being developed at the Idaho National Engineering and Environmental Laboratory under the primary sponsorship of the U.S. Nuclear Regulatory Commission (NRC) to provide best-estimate transient simulations of light water reactor coolant systems during severe accidents. This paper describes the modeling approach used in the SCDAP/RELAP5 code to calculate fluid heat transfer and flow losses through porous debris that has accumulated in the vessel lower head and core regions during the latter stages of a severe accident. The implementation of heat transfer and flow loss correlations into the code is discussed, and calculations performed to assess the validity of the modeling approach are described. The different modes of heat transfer in porous debris include: (1) forced convection to liquid, (2) forced convection to gas, (3) nucleate boiling, (4) transition boiling, (5) film boiling, and (6) transition from film boiling to convection to vapor. The correlations for flow losses in porous debris include frictional and form losses. The correlations for flow losses were integrated into the momentum equations in the RELAP5 part of the code. Since RELAP5 is a very general non-homogeneous non-equilibrium thermal-hydraulics code, the resulting modeling methodology is applicable to a wide range of debris thermal-hydraulic conditions. Assessment of the SCDAP/RELAP5 debris bed thermal-hydraulic models included comparisons with experimental measurements and other models available in the open literature. The assessment calculations, described in the paper, showed that SCDAP/RELAP5 is capable of calculating the heat transfer and flow losses occurring in porous debris regions that may develop in a light water reactor during a severe accident.

  19. SCDAP/RELAP5 modeling of fluid heat transfer and flow losses through porous debris in a light water reactor

    SciTech Connect (OSTI)

    E. A. Harvego; L. J. Siefken

    2000-04-02

    The SCDAP/RELAP5 code is being developed at the Idaho National Engineering and Environmental Laboratory under the primary sponsorship of the U.S. Nuclear Regulatory Commission (NRC) to provide best-estimate transient simulations of light water reactor coolant systems during severe accidents. This paper describes the modeling approach used in the SCDAP/RELAP5 code to calculate fluid heat transfer and flow losses through porous debris that has accumulated in the vessel lower head and core regions during the latter stages of a severe accident. The implementation of heat transfer and flow loss correlations into the code is discussed, and calculations performed to assess the validity of the modeling approach are described. The different modes of heat transfer in porous debris include: (1) forced convection to liquid, (2) forced convection to gas, (3) nucleate boiling, (4) transition boiling, (5) film boiling, and (6) transition from film boiling to convection to vapor. The correlations for flow losses in porous debris include frictional and form losses. The correlations for flow losses were integrated into the momentum equations in the RELAP5 part of the code. Since RELAP5 is a very general non-homogeneous non-equilibrium thermal-hydraulics code, the resulting modeling methodology is applicable to a wide range of debris thermal-hydraulic conditions. Assessment of the SCDAP/RELAP5 debris bed thermal-hydraulic models included comparisons with experimental measurements and other models available in the open literature. The assessment calculations, described in the paper, showed that SCDAP/RELAP5 is capable of calculating the heat transfer and flow losses occurring in porous debris regions that may develop in a light water reactor during a severe accident.

  20. Stochastic Parameterization for Light Absorption by Internally Mixed BC/dust in Snow Grains for Application to Climate Models

    SciTech Connect (OSTI)

    Liou, K. N.; Takano, Y.; He, Cenlin; Yang, P.; Leung, Lai-Yung R.; Gu, Y.; Lee, W- L.

    2014-06-27

    A stochastic approach to model the positions of BC/dust internally mixed with two snow-grain types has been developed, including hexagonal plate/column (convex) and Koch snowflake (concave). Subsequently, light absorption and scattering analysis can be followed by means of an improved geometric-optics approach coupled with Monte Carlo photon tracing to determine their single-scattering properties. For a given shape (plate, Koch snowflake, spheroid, or sphere), internal mixing absorbs more light than external mixing. The snow-grain shape effect on absorption is relatively small, but its effect on the asymmetry factor is substantial. Due to a greater probability of intercepting photons, multiple inclusions of BC/dust exhibit a larger absorption than an equal-volume single inclusion. The spectral absorption (0.2 5 um) for snow grains internally mixed with BC/dust is confined to wavelengths shorter than about 1.4 um, beyond which ice absorption predominates. Based on the single-scattering properties determined from stochastic and light absorption parameterizations and using the adding/doubling method for spectral radiative transfer, we find that internal mixing reduces snow albedo more than external mixing and that the snow-grain shape plays a critical role in snow albedo calculations through the asymmetry factor. Also, snow albedo reduces more in the case of multiple inclusion of BC/dust compared to that of an equal-volume single sphere. For application to land/snow models, we propose a two-layer spectral snow parameterization containing contaminated fresh snow on top of old snow for investigating and understanding the climatic impact of multiple BC/dust internal mixing associated with snow grain metamorphism, particularly over mountains/snow topography.

  1. Model for characterization of a vortex pair formed by shock passage over a light-gas inhomogeneity

    SciTech Connect (OSTI)

    Yang, J.; Kubota, T.; Zukoski, E.E.

    1994-01-01

    This work investigates the two-dimensional flow of a shock wave over a circular light-gas inhomogeneity in a channel with finite width. The pressure gradient from the shock wave interacts with the density gradient at the edge of the inhomogeneity to deposit vorticity around the perimeter, and the structure rolls up into a pair of counter-rotating vortices. The aim of this study is to develop an understanding of the scaling laws for the flow field produced by this interaction at times long after the passage of the shock across the inhomogeneity. Numerical simulations are performed for various initial conditions and the results are used to guide the development of relatively simple algebraic models that characterize the dynamics of the vortex pair, and that allow extrapolation of the numerical results to conditions more nearly of interest in practical situations. The models are not derived directly from the equations of motion but depend on these equations and on intuition guided by the numerical results. Agreement between simulations and models is generally good except for a vortex-spacing model which is less satisfactory. A practical application of this shock-induced vortical flow is rapid and efficient mixing of fuel and oxidizer in a SCRAMJET combustion chamber. One possible injector design uses the interaction of an oblique shock wave with a jet of light fuel to generate vorticity which stirs and mixes the two fluids and lifts the burning jet away from the combustor wall. Marble proposed an analogy between this three-dimensional steady flow and the two-dimensional unsteady problem of the present investigation. Comparison is made between closely corresponding three-dimensional steady and two-dimensional unsteady flows, and a mathematical description of Marble`s analogy is proposed. 17 refs.

  2. Alternative Fuels Data Center: Biodiesel Truck Transports Capitol...

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    Clean Cities Helps National Parks Model Sustainable Transportation July 27, 2015 Photo of a locomotive engine carrying passenger cars. New Hampshire Railway Makes Tracks With ...

  3. Post-2020 climate agreements in the major economies assessed in the light of global models

    SciTech Connect (OSTI)

    Tavoni, Massimo; Kriegler, Elmar; Riahi, Keywan; Van Vuuren, Detlef; Aboumahboub, Tino; Bowen, Alex; Calvin, Katherine V.; Campiglio, Emanuele; Kober, Tom; Jewell, Jessica; Luderer, Gunnar; Marangoni, Giacomo; McCollum, David; van Sluisveld, Mariesse; Zimmer, Anne; van der Zwaan, Bob

    2014-12-15

    Integrated assessment models can help in quantifying the implications of international climate agreements and regional climate action. This paper reviews scenario results from model intercomparison projects to explore different possible outcomes of post-2020 climate negotiations, recently announced pledges and their relation to the 2°C target. We provide key information for all the major economies, such as the year of emission peaking, regional carbon budgets and emissions allowances. We highlight the distributional consequences of climate policies, and discuss the role of carbon markets for financing clean energy investments, and achieving efficiency and equity.

  4. Economic Analysis of Commercial Idling Reduction Technologies: Which idling reduction system is most economical for truck owners?

    Office of Energy Efficiency and Renewable Energy (EERE)

    Presentation given at DEER 2006, August 20-24, 2006, Detroit, Michigan. Sponsored by the U.S. DOE's EERE FreedomCar and Fuel Partnership and 21st Century Truck Programs.

  5. A Quantum Leap for Heavy-Duty Truck Engine Efficiency- Hybrid Power System of Diesel and WHR-ORC Engines

    Broader source: Energy.gov [DOE]

    Presentation given at DEER 2006, August 20-24, 2006, Detroit, Michigan. Sponsored by the U.S. DOE's EERE FreedomCar and Fuel Partnership and 21st Century Truck Programs.

  6. Vehicle Technologies Office 2013 Merit Review: A System for Automatically Maintaining Pressure in a Commercial Truck Tire

    Broader source: Energy.gov [DOE]

    A presentation given by PPG during the 2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting on a system for automatically maintaining tire pressure in commercial truck tires.

  7. Fact #846: November 10, 2014 Trucks Move 70% of all Freight by Weight and 74% of Freight by Value

    Broader source: Energy.gov [DOE]

    According to the preliminary 2012 Commodity Flow Survey (CFS) data, trucks transport the vast majority of freight by both weight and value. The two pie charts below show the share of freight moved...

  8. Vehicle Technologies Office Merit Review 2015: Plug-In Hybrid Medium-Duty Truck Demonstration and Evaluation Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    Presentation given by SCAQMD at 2015 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about plug-in hybrid medium-duty truck...

  9. Modeling Proton- and Light Ion-Induced Reactions at Low Energies in the MARS15 Code

    SciTech Connect (OSTI)

    Rakhno, I. L.; Mokhov, N. V.; Gudima, K. K.

    2015-04-25

    An implementation of both ALICE code and TENDL evaluated nuclear data library in order to describe nuclear reactions induced by low-energy projectiles in the Monte Carlo code MARS15 is presented. Comparisons between results of modeling and experimental data on reaction cross sections and secondary particle distributions are shown.

  10. NREL: Transportation Research - Vehicle Thermal Management Models and Tools

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Models and Tools image of three models of semi truck cabs. Truck cab models drawn from CAD geometry using CoolCalc (left and center), and a model with overlay of computational fluid dynamics flow (right) indicate areas of heat absorption and loss. Illustrations by Jason Lustbader, Matt Jeffers, and Larry Chaney, NREL The National Renewable Energy Laboratory's (NREL's) vehicle thermal management modeling tools allow researchers to assess the trade-offs and calculate the potential benefits of

  11. Engineering tasl plan for the development, fabrication and installation of rotary mode core sample truck bellows

    SciTech Connect (OSTI)

    BOGER, R.M.

    1999-06-24

    The Rotary Mode Core Sampling Trucks (RMSCTs) currently use a multi-sectioned bellows between the grapple box and the quill rod to compensate for drill head motion and to provide a path for purge gas. The current bellows, which is detailed on drawing H-2-690059, is expensive to procure, has a lengthy procurement cycle, and is prone to failure. Therefore, a task has been identified to design, fabricate, and install a replacement bellows. This Engineering Task Plan (ETP) is the management plan document for accomplishing the identified tasks. Any changes in scope of the ETP shall require formal direction by the Characterization Engineering manager. This document shall also be considered the work planning document for developmental control per Development Control Requirements (HNF 1999a). This Engineering Task Plan (ETP) is the management plan document for accomplishing the design, fabrication, and installation of a replacement bellows assembly for the Rotary Mode Core Sampling Trucks 3 and 4 (RMCST).

  12. SuperTruck … Development and Demonstration of a Fuel-Efficient Class 8 Tractor & Trailer

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Technologies 1 SuperTruck - Development and Demonstration of a Fuel Efficient Class 8 Tractor & Trailer DE-EE0003303 This presentation does not contain any proprietary, confidential, or otherwise restricted information SuperTruck - Development and Demonstration of a Fuel-Efficient Class 8 Tractor & Trailer Vehicle Systems DOE Contract: DE-EE0003303 NETL Project Manager: Ralph Nine Program Investigator : Dennis W. Jadin, Navistar DOE MERIT REVIEW WASHINGTON, D.C. May 17th, 2012 National

  13. NREL Shows Heavy Duty Hybrid Trucks Deliver on Fuel Economy - News Releases

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    | NREL NREL Shows Heavy Duty Hybrid Trucks Deliver on Fuel Economy September 11, 2012 A performance evaluation of Class 8 hybrid electric tractor trailers compared with similar conventional vehicles by the U.S. Department of Energy's (DOE's) National Renewable Energy Laboratory (NREL) shows significant improvements in fuel economy. "During our 13-month study, the hybrid tractors demonstrated 13.7 percent higher fuel economy than the conventional tractors, resulting in a 12 percent

  14. NREL Highlight: Truck Platooning Testing (Fact Sheet), NREL (National Renewable Energy Laboratory)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    An NREL study found that platooning of long-haul trucks reduces fuel consumption at all tested highway speeds. Vehicle automation is a promising fuel-saving strategy; semiautomated platooning systems for heavy-duty vehicles represent a likely first step toward public acceptance. Platooning reduces aerodynamic drag by grouping vehicles and safely decreasing the distance between them via electronic coupling, which allows multiple vehicles to accelerate or brake simultaneously. Researchers at the

  15. Norcal Waste Systems, Inc. Advanced Technology Vehicles in Service, LNG Heavy-Duty Trucks Fact Sheet.

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    TRUCKS ARE EQUIPPED WITH CUMMINS WESTPORT'S ISXG HEAVY-DUT Y ENGINE. Cummins Westport Inc. is a joint venture company formed by Cummins Inc. and Westport Innovations Inc. to bring natural gas engines to market. Westport Innovations is an alternative fuel engine technology company that developed the High-Pressure Direct Injection (HPDI(tm)) system and other natural gas technologies; Cummins is a veteran diesel engine manufacturer that provides the compression ignition engines with technology for

  16. 21st Century Truck Partnership Roadmap Roadmap and Technical White Papers - 21CTP-0003, December 2006

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    ACKNOWLEDGEMENTS The 21 st Century Truck Partnership would like to acknowledge the time and resource investment that all our partners have made in developing this roadmap and technical white paper document, and in remaining committed to the goals and objectives outlined herein. We would also like to extend our appreciation to the industry and government teams that produced the individual technical white papers, and the leaders of those teams who are listed below. Engines: Ron Graves (Oak Ridge

  17. SuperTruck … Development and Demonstration of a Fuel-Efficient Class 8

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Tractor & Trailer | Department of Energy 1 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation vss064_jadin_2011_o.pdf (1020.57 KB) More Documents & Publications SuperTruck … Development and Demonstration of a Fuel-Efficient Class 8 Tractor & Trailer Supertruck - Development and Demonstration of a Fuel-Efficient Class 8 Tractor & Trailer Supertruck - Development and Demonstration of a Fuel-Efficient Class 8 Tractor

  18. Driving R&D for the Next Generation Work Truck; NREL (National Renewable Energy Laboratory)

    SciTech Connect (OSTI)

    Melendez, M.

    2015-03-04

    Improvements in medium- and heavy-duty work truck energy efficiency can dramatically reduce the use of petroleum-based fuels and the emissions of greenhouse gases. The National Renewable Energy Laboratory (NREL) is working with industry partners to develop fuel-saving, high-performance vehicle technologies, while examining fleet operational practices that can simulateneously improve fuel economy, decrease emissions, and support bottom-line goals.

  19. A novel theoretical model for broadband blue InGaN/GaN superluminescent light emitting diodes

    SciTech Connect (OSTI)

    Moslehi Milani, N.; Mohadesi, V.; Asgari, A.

    2015-02-07

    A broadband superluminescent light emitting diode with In{sub 0.2}Ga{sub 0.8}N/GaN multiple quantum wells (MQWs) active region is investigated. The investigation is based on a theoretical model which includes the calculation of electronic states of the structure, rate equations, and the spectral radiation power. Two rate equations corresponding to MQW active region and separate confinement heterostructures layer are solved self-consistently with no-k selection wavelength dependent gain and quasi-Fermi level functions. Our results show that the superluminescence started in a current of ∼120 mA (∼7.5 kA/Cm{sup 2}) at 300 K. The range of peak emission wavelengths for different currents is 423–426 nm and the emission bandwidth is ∼5 nm in the superluminescence regime. A maximum light output power of 7.59 mW is obtained at 600 mA and the peak modal gain as a function of current indicates logarithmic behavior. Also, the comparison of our calculated results with published experimental data is shown to be in good agreement.

  20. Light Water Reactor Sustainability Program: survey of models for concrete degradation

    SciTech Connect (OSTI)

    Spencer, Benjamin W; Huang, Hai

    2014-08-01

    Concrete has been used in the construction of nuclear facilities because of two primary properties: its structural strength and its ability to shield radiation. Concrete structures have been known to last for hundreds of years, but they are also known to deteriorate in very short periods of time under adverse conditions. The use of concrete in nuclear facilities for containment and shielding of radiation and radioactive materials has made its performance crucial for the safe operation of the facility. The goal of this report is to review and document the main aging mechanisms of concern for concrete structures in nuclear power plants (NPPs) and the models used in simulations of concrete aging and structural response of degraded concrete structures. This is in preparation for future work to develop and apply models for aging processes and response of aged NPP concrete structures in the Grizzly code. To that end, this report also provides recommendations for developing more robust predictive models for aging effects of performance of concrete.

  1. Plug-In Hybrid Medium-Duty Truck Demonstration and Evaluation

    SciTech Connect (OSTI)

    Miyasato, Matt; Kosowski, Mark

    2015-10-01

    The Plug-In Hybrid Medium-Duty Truck Demonstration and Evaluation Program was sponsored by the United States Department of Energy (DOE) using American Recovery and Reinvestment Act of 2009 (ARRA) funding. The purpose of the program is to develop a path to migrate plug-in hybrid electric vehicle (PHEV) technology to medium-duty vehicles by demonstrating and evaluating vehicles in diverse applications. The program also provided three production-ready PHEV systems—Odyne Systems, Inc. (Odyne) Class 6 to 8 trucks, VIA Motors, Inc. (VIA) half-ton pickup trucks, and VIA three-quarter-ton vans. The vehicles were designed, developed, validated, produced, and deployed. Data were gathered and tests were run to understand the performance improvements, allow cost reductions, and provide future design changes. A smart charging system was developed and produced during the program. The partnerships for funding included the DOE; the California Energy Commission (CEC); the South Coast Air Quality Management District (SCAQMD); the Electric Power Research Institute (EPRI); Odyne; VIA; Southern California Edison; and utility and municipal industry participants. The reference project numbers are DOE FOA-28 award number EE0002549 and SCAQMD contract number 10659.

  2. WORKSHOP REPORT:Light-Duty Vehicles Technical Requirements and Gaps for

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Lightweight and Propulsion Materials | Department of Energy Light-Duty Vehicles Technical Requirements and Gaps for Lightweight and Propulsion Materials WORKSHOP REPORT:Light-Duty Vehicles Technical Requirements and Gaps for Lightweight and Propulsion Materials wr_ldvehicles.pdf (765.43 KB) More Documents & Publications WORKSHOP REPORT: Trucks and Heavy-Duty Vehicles Technical Requirements and Gaps for Lightweight and Propulsion Materials Summary of the Output from the VTP Advanced

  3. Advanced Technologies for Light-Duty Vehicles (released in AEO2006)

    Reports and Publications (EIA)

    2006-01-01

    A fundamental concern in projecting the future attributes of light-duty vehicles-passenger cars, sport utility vehicles, pickup trucks, and minivans-is how to represent technological change and the market forces that drive it. There is always considerable uncertainty about the evolution of existing technologies, what new technologies might emerge, and how consumer preferences might influence the direction of change. Most of the new and emerging technologies expected to affect the performance and fuel use of light-duty vehicles over the next 25 years are represented in the National Energy Modeling System (NEMS); however, the potential emergence of new, unforeseen technologies makes it impossible to address all the technology options that could come into play. The previous section of Issues in Focus discussed several potential technologies that currently are not represented in NEMS. This section discusses some of the key technologies represented in NEMS that are expected to be implemented in light-duty vehicles over the next 25 years.

  4. Statistical Analysis and Modeling of Occupancy Patterns in Open-Plan Offices using Measured Lighting-Switch Data

    SciTech Connect (OSTI)

    Chang, Wen-Kuei; Hong, Tianzhen

    2013-01-01

    Occupancy profile is one of the driving factors behind discrepancies between the measured and simulated energy consumption of buildings. The frequencies of occupants leaving their offices and the corresponding durations of absences have significant impact on energy use and the operational controls of buildings. This study used statistical methods to analyze the occupancy status, based on measured lighting-switch data in five-minute intervals, for a total of 200 open-plan (cubicle) offices. Five typical occupancy patterns were identified based on the average daily 24-hour profiles of the presence of occupants in their cubicles. These statistical patterns were represented by a one-square curve, a one-valley curve, a two-valley curve, a variable curve, and a flat curve. The key parameters that define the occupancy model are the average occupancy profile together with probability distributions of absence duration, and the number of times an occupant is absent from the cubicle. The statistical results also reveal that the number of absence occurrences decreases as total daily presence hours decrease, and the duration of absence from the cubicle decreases as the frequency of absence increases. The developed occupancy model captures the stochastic nature of occupants moving in and out of cubicles, and can be used to generate a more realistic occupancy schedule. This is crucial for improving the evaluation of the energy saving potential of occupancy based technologies and controls using building simulations. Finally, to demonstrate the use of the occupancy model, weekday occupant schedules were generated and discussed.

  5. Production and decays of the light pseudoscalar boson {eta} at the CERN LHC in the simplest little Higgs model

    SciTech Connect (OSTI)

    Cheung Kingman; Yan Qishu; Song, Jeonghyeon; Tseng Poyan

    2008-09-01

    In many extensions of the standard model, the Higgs sector often contains an additional pseudoscalar boson. A good example is the SU(3) simplest little Higgs model, which accommodates a light pseudoscalar boson {eta} with quite different characteristics from those in other multi-Higgs-doublet models. We study various phenomenological signatures of the {eta} at the CERN LHC. In particular, we calculate in details both production and decays in the Drell-Yan type channel qq{yields}Z/Z{sup '}{yields}h{eta}, and in the associated production with a tt pair, gg(qq){yields}tt{eta}. We emphasize the {tau}{sup +}{tau}{sup -} decay mode of the {eta} boson when its mass is below the bb threshold. We show that tt{eta} production is in fact large enough to give a sizable number of events while suppressing the backgrounds. We also comment on the direct gluon fusion process and the indirect decay from the heavy T quark (T{yields}t{eta})

  6. American Recovery & Reinvestment Act: Fuel Cell Hybrid Power Packs and Hydrogen Refueling for Lift Trucks

    SciTech Connect (OSTI)

    Block, Gus

    2011-07-31

    HEB Grocery Company, Inc. (H-E-B) is a privately-held supermarket chain with 310 stores throughout Texas and northern Mexico. H-E-B converted 14 of its lift reach trucks to fuel cell power using Nuvera Fuel Cells’ PowerEdge™ units to verify the value proposition and environmental benefits associated with the technology. Issues associated with the increasing power requirements of the distribution center operation, along with high ambient temperature in the summer and other operating conditions (such as air quality and floor surface condition), surfaced opportunities for improving Nuvera’s PowerEdge fuel cell system design in high-throughput forklift environments. The project included on-site generation of hydrogen from a steam methane reformer, called PowerTap™ manufactured by Nuvera. The hydrogen was generated, compressed and stored in equipment located outside H-E-B’s facility, and provided to the forklifts by hydrogen dispensers located in high forklift traffic areas. The PowerEdge fuel cell units logged over 25,300 operating hours over the course of the two-year project period. The PowerTap hydrogen generator produced more than 11,100 kg of hydrogen over the same period. Hydrogen availability at the pump was 99.9%. H-E-B management has determined that fuel cell forklifts help alleviate several issues in its distribution centers, including truck operator downtime associated with battery changing, truck and battery maintenance costs, and reduction of grid electricity usage. Data collected from this initial installation demonstrated a 10% productivity improvement, which enabled H-E-B to make economic decisions on expanding the fleet of PowerEdge and PowerTap units in the fleet, which it plans to undertake upon successful demonstration of the new PowerEdge reach truck product. H-E-B has also expressed interst in other uses of hydrogen produced on site in the future, such as for APUs used in tractor trailers and refrigerated transport trucks in its fleet.

  7. Gamma-ray and radio constraints of high positron rate dark matter models annihilating into new light particles

    SciTech Connect (OSTI)

    Bergstroem, Lars; Bringmann, Torsten; Edsjoe, Joakim; Bertone, Gianfranco; Taoso, Marco

    2009-04-15

    The possibility of explaining the positron and electron excess recently found by the PAMELA and ATIC Collaborations in terms of dark matter (DM) annihilation has attracted considerable attention. Models surviving bounds from, e.g., antiproton production generally fall into two classes, where either DM annihilates directly with a large branching fraction into light leptons, or, as in the recent models of Arkani-Hamed et al., and of Nomura and Thaler, the annihilation gives low-mass (pseudo)scalars or vectors {phi} which then decay into {mu}{sup +}{mu}{sup -} or e{sup +}e{sup -}. While the constraints on the first kind of models have recently been treated by several authors, we study here specifically models of the second type which rely on an efficient Sommerfeld enhancement in order to obtain the necessary boost in the annihilation cross section. We compute the photon flux generated by QED radiative corrections to the decay of {phi} and show that this indeed gives a rather spectacular broad peak in E{sup 2}d{sigma}/dE, which for these extreme values of the cross section violates gamma-ray observations of the Galactic center for DM density profiles steeper than that of Navarro, Frenk and White. The most stringent constraint comes from the comparison of the predicted synchrotron radiation in the central part of the Galaxy with radio observations of Sgr A*. For the most commonly adopted DM profiles, the models that provide a good fit to the PAMELA and ATIC data are ruled out, unless there are physical processes that boost the local antimatter fluxes more than 1 order of magnitude, while not affecting the gamma-ray or radio fluxes.

  8. Commercial Lighting

    Broader source: Energy.gov [DOE]

    Commercial lighting accounts for more than 20 percent of total commercial building energy use. The Energy Department works to reduce lighting energy use through research and deployment.

  9. A tale of tails. Dark matter interpretations of the Fermi GeV excess in light of background model systematics

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Calore, Francesca; Cholis, Ilias; McCabe, Christopher; Weniger, Christoph

    2015-03-10

    Several groups have identified an extended excess of gamma rays over the modeled foreground and background emissions towards the Galactic center (GC) based on observations with the Fermi Large Area Telescope. This excess emission is compatible in morphology and spectrum with a telltale sign from dark matter (DM) annihilation. Here, we present a critical reassessment of DM interpretations of the GC signal in light of the foreground and background uncertainties that some of us recently outlaid in Calore et al. (2014). We find that a much larger number of DM models fits the gamma-ray data than previously noted. In particular:more(1) In the case of DM annihilation into bb, we find that even large DM masses up to m??74 GeV are allowed at p-value >0.05. (2) Surprisingly, annihilation into nonrelativistic hh gives a good fit to the data. (3) The inverse Compton emission from ?+? with m? ~ 6070 GeV can also account for the excess at higher latitudes, |b|>2, both in its spectrum and morphology. We also present novel constraints on a large number of mixed annihilation channels, including cascade annihilation involving hidden sector mediators. In conclusion, we show that the current limits from dwarf spheroidal observations are not in tension with a DM interpretation when uncertainties on the DM halo profile are accounted for.less

  10. A Tale of Tails. Dark Matter Interpretations of the Fermi GeV Excess in Light of Background Model Systematics

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Calore, Francesca; Cholis, Ilias; McCabe, Christopher; Weniger, Christoph

    2015-03-10

    Several groups have identified an extended excess of gamma rays over the modeled foreground and background emissions towards the Galactic center (GC) based on observations with the Fermi Large Area Telescope. The excess emission is compatible in morphology and spectrum with a telltale sign from dark matter (DM) annihilation. Here, we present a critical reassessment of DM interpretations of the GC signal in light of the foreground and background uncertainties that some of us recently outlaid in Calore et al. (2014). We also find that a much larger number of DM models fits the gamma-ray data than previously noted. Inmore » particular: (1) In the case of DM annihilation into b¯b, we find that even large DM masses up to mχ≃74 GeV are allowed at p-value >0.05. (2) Surprisingly, annihilation into nonrelativistic hh gives a good fit to the data. (3) The inverse Compton emission from μ+μ- with mχ~60–70 GeV can also account for the excess at higher latitudes, |b|>2°, both in its spectrum and morphology. We also present novel constraints on a large number of mixed annihilation channels, including cascade annihilation involving hidden sector mediators. Finally, we show that the current limits from dwarf spheroidal observations are not in tension with a DM interpretation when uncertainties on the DM halo profile are accounted for.« less

  11. A Tale of Tails. Dark Matter Interpretations of the Fermi GeV Excess in Light of Background Model Systematics

    SciTech Connect (OSTI)

    Calore, Francesca; Cholis, Ilias; McCabe, Christopher; Weniger, Christoph

    2015-03-10

    Several groups have identified an extended excess of gamma rays over the modeled foreground and background emissions towards the Galactic center (GC) based on observations with the Fermi Large Area Telescope. The excess emission is compatible in morphology and spectrum with a telltale sign from dark matter (DM) annihilation. Here, we present a critical reassessment of DM interpretations of the GC signal in light of the foreground and background uncertainties that some of us recently outlaid in Calore et al. (2014). We also find that a much larger number of DM models fits the gamma-ray data than previously noted. In particular: (1) In the case of DM annihilation into bb, we find that even large DM masses up to m??74 GeV are allowed at p-value >0.05. (2) Surprisingly, annihilation into nonrelativistic hh gives a good fit to the data. (3) The inverse Compton emission from ?+?- with m?~6070 GeV can also account for the excess at higher latitudes, |b|>2, both in its spectrum and morphology. We also present novel constraints on a large number of mixed annihilation channels, including cascade annihilation involving hidden sector mediators. Finally, we show that the current limits from dwarf spheroidal observations are not in tension with a DM interpretation when uncertainties on the DM halo profile are accounted for.

  12. A Tale of Tails. Dark Matter Interpretations of the Fermi GeV Excess in Light of Background Model Systematics

    SciTech Connect (OSTI)

    Calore, Francesca; Cholis, Ilias; McCabe, Christopher; Weniger, Christoph

    2015-03-10

    Several groups have identified an extended excess of gamma rays over the modeled foreground and background emissions towards the Galactic center (GC) based on observations with the Fermi Large Area Telescope. The excess emission is compatible in morphology and spectrum with a telltale sign from dark matter (DM) annihilation. Here, we present a critical reassessment of DM interpretations of the GC signal in light of the foreground and background uncertainties that some of us recently outlaid in Calore et al. (2014). We also find that a much larger number of DM models fits the gamma-ray data than previously noted. In particular: (1) In the case of DM annihilation into b¯b, we find that even large DM masses up to mχ≃74 GeV are allowed at p-value >0.05. (2) Surprisingly, annihilation into nonrelativistic hh gives a good fit to the data. (3) The inverse Compton emission from μ+μ- with mχ~60–70 GeV can also account for the excess at higher latitudes, |b|>2°, both in its spectrum and morphology. We also present novel constraints on a large number of mixed annihilation channels, including cascade annihilation involving hidden sector mediators. Finally, we show that the current limits from dwarf spheroidal observations are not in tension with a DM interpretation when uncertainties on the DM halo profile are accounted for.

  13. Motor vehicle MPG and market shares report. MPG and market share data system, model year 1983

    SciTech Connect (OSTI)

    Hu, P.S.; Roberts, G.F.

    1984-02-01

    Estimates of final model year 1983 new car and new light truck MPG are provided. ORNL has modified the procedure for calculating new car MPG. The new procedure takes into account the sales mix of engine size, engine type (gasoline or diesel), and transmission type within a nameplate (car line). For example, the new ORNL method takes into account that over 60 percent of the Chevettes in 1983 were the gasoline version (98 CID engine displacement) with a 3-speed automatic transmission. Also, the three diesel model types accounted for only about 1 percent of the Chevette sales. This new method estimated the Chevette MPG for 1983 to be 33.2, nearly 5 MPG lower than the estimate based on the old method. Since this report contains revised new car MPG estimates for every year, the fuel economy estimates in this report are not comparable to those in any previous ORNL report. The estimates of new light truck MPG have not been revised, however.

  14. Design and Commissioning of a Wind Tunnel for Integrated Physical and Chemical Measurements of PM Dispersing Plume of Heavy Duty Diesel Truck

    Broader source: Energy.gov [DOE]

    Presents plume characterization of three vehicles with different aftertreatment configuration, representative of legacy, current and future heavy-duty truck fleets

  15. Fact #846: November 10, 2014 Trucks Move 70% of all Freight by Weight and 74% of Freight by Value – Dataset

    Broader source: Energy.gov [DOE]

    Excel file with dataset for Fact #846: Trucks Move 70% of all Freight by Weight and 74% of Freight by Value

  16. Fact #916: March 14, 2016 Fuel Savings/Emissions Reduction was the Top Reason Cited by Truck Fleet Management for Adopting Idle Reduction Technologies- Dataset

    Broader source: Energy.gov [DOE]

    Excel file and dataset for Fuel Savings/Emissions Reduction was the Top Reason Cited by Truck Fleet Management for Adopting Idle Reduction Technologies

  17. Fact #660: January 31, 2011 Light Vehicle Sales Rise in 2010 | Department

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    of Energy 0: January 31, 2011 Light Vehicle Sales Rise in 2010 Fact #660: January 31, 2011 Light Vehicle Sales Rise in 2010 The total sales of light vehicles (cars and light trucks) in the U.S. have ranged between 10 million and 17 million over the course of the last 40 years. Though the sales have experienced highs and lows over this period, the recent sales plummet from 16.1 million vehicles in 2007 to 10.4 million vehicles in 2009 was the largest drop in the 40 year period with sales

  18. Fact #862 March 2, 2015 Light Vehicle Production in Mexico More than

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Doubled in Last Five Years | Department of Energy 2 March 2, 2015 Light Vehicle Production in Mexico More than Doubled in Last Five Years Fact #862 March 2, 2015 Light Vehicle Production in Mexico More than Doubled in Last Five Years Total production of light vehicles in Mexico remained nearly flat between 2004 and 2009 but in the following five-year span from 2009 to 2014, production more than doubled. In 2004, cars and light trucks made up an almost equal share of that production but since

  19. Improving the Efficiency of Light-Duty Vehicle HVAC Systems using Zonal Thermoelectric Devices and Comfort Modeling

    Office of Energy Efficiency and Renewable Energy (EERE)

    Summarizes results from a study to identify and demonstrate technical and commercial approaches necessary to accelerate the deployment of zonal TE HVAC systems in light-duty vehicles

  20. Truck and rail charges for shipping spent fuel and nuclear waste

    SciTech Connect (OSTI)

    McNair, G.W.; Cole, B.M.; Cross, R.E.; Votaw, E.F.

    1986-06-01

    The Pacific Northwest Laboratory developed techniques for calculating estimates of nuclear-waste shipping costs and compiled a listing of representative data that facilitate incorporation of reference shipping costs into varius logistics analyses. The formulas that were developed can be used to estimate costs that will be incurred for shipping spent fuel or nuclear waste by either legal-weight truck or general-freight rail. The basic data for this study were obtained from tariffs of a truck carrier licensed to serve the 48 contiguous states and from various rail freight tariff guides. Also, current transportation regulations as issued by the US Department of Transportation and the Nuclear Regulatory Commission were investigated. The costs that will be incurred for shipping spent fuel and/or nuclear waste, as addressed by the tariff guides, are based on a complex set of conditions involving the shipment origin, route, destination, weight, size, and volume and the frequency of shipments, existing competition, and the length of contracts. While the complexity of these conditions is an important factor in arriving at a ''correct'' cost, deregulation of the transportation industry means that costs are much more subject to negotiation and, thus, the actual fee that will be charged will not be determined until a shipping contract is actually signed. This study is designed to provide the baseline data necessary for making comparisons of the estimated costs of shipping spent fuel and/or nuclear wastes by truck and rail transportation modes. The scope of the work presented in this document is limited to the costs incurred for shipping, and does not include packaging, cask purchase/lease costs, or local fees placed on shipments of radioactive materials.

  1. DOE Hydrogen and Fuel Cells Program Record, Record # 13008: Industry Deployed Fuel Cell Powered Lift Trucks

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    8 Date: 10/04/2013 Title: Industry Deployed Fuel Cell Powered Lift Trucks Originators: Pete Devlin, Jim Alkire, Sara Dillich, Kristen Nawoj, Stephanie Byham Approved by: Sunita Satyapal and Rick Farmer Date: 10/15/2013 Item: Table 1: Number of fuel cell deployments (installed and on-order) for applications in material handling equipment (MHE). The successful deployment of nearly 700 U.S. Department of Energy (DOE) fuel cell material handling units has led to almost 5,400 industry installation

  2. Voluntary Truck and Bus Fuel-Economy-Program marketing plan. Final technical report, September 29, 1980-January 29, 1982

    SciTech Connect (OSTI)

    1982-01-01

    The aim of the program is to improve the utilization of fuel by commercial trucks and buses by updating and implementing specific approaches for educating and monitoring the trucking industry on methods and means of conserving fuels. The following outlines the marketing plan projects: increase use of program logo by voluntary program members and others; solicit trade publication membership and support; brief Congressional delegations on fuel conservation efforts; increase voluntary program presence before trade groups; increase voluntary program presence at truck and trade shows; create a voluntary program display for use at trade shows and in other areas; review voluntary program graphics; increase voluntary program membership; and produce placemats carrying fuel conservation messages; produce a special edition of Fuel Economy News, emphasizing the driver's involvement in fuel conservation; produce posters carrying voluntary program fuel conservation message. Project objectives, activities, and results for each project are summarized.

  3. Advanced Hybrid Propulsion and Energy Management System for High Efficiency, Off Highway, 240 Ton Class, Diesel Electric Haul Trucks

    SciTech Connect (OSTI)

    Richter, Tim; Slezak, Lee; Johnson, Chris; Young, Henry; Funcannon, Dan

    2008-12-31

    The objective of this project is to reduce the fuel consumption of off-highway vehicles, specifically large tonnage mine haul trucks. A hybrid energy storage and management system will be added to a conventional diesel-electric truck that will allow capture of braking energy normally dissipated in grid resistors as heat. The captured energy will be used during acceleration and motoring, reducing the diesel engine load, thus conserving fuel. The project will work towards a system validation of the hybrid system by first selecting an energy storage subsystem and energy management subsystem. Laboratory testing at a subscale level will evaluate these selections and then a full-scale laboratory test will be performed. After the subsystems have been proven at the full-scale lab, equipment will be mounted on a mine haul truck and integrated with the vehicle systems. The integrated hybrid components will be exercised to show functionality, capability, and fuel economy impacts in a mine setting.

  4. Observations and models of emissions of volatile terpenoid compounds from needles of ponderosa pine trees growing in situ: Controls by light, temperature and stomatal conductance

    SciTech Connect (OSTI)

    Harley, P.; Eller, Allyson; Guenther, Alex B.; Monson, Russell K.

    2014-07-14

    Terpenoid emissions from ponderosa pine (Pinus ponderosa subsp. scopulorum) were measured in Colorado, USA over two growing seasons to evaluate the role of incident light, needle temperature and stomatal conductance in controlling emissions of 2-methyl-3-buten-2-ol (MBO) and several monoterpenes. MBO was the dominant daylight terpenoid emission, comprising on average 87% of the total flux, and diurnal variations were largely determined by light and temperature. During daytime, oxygenated monoterpenes (especially linalool) comprised up to 75% of the total monoterpenoid flux from needles. A significant fraction of monoterpenoid emissions was light dependent and 13CO2 labeling studies confirmed de novo production. Thus, modeling of monoterpenoid emissions required a hybrid model in which a significant fraction of emissions was dependent on both light and temperature, while the remainder was dependent on temperature alone. Experiments in which stomata were forced to close using abscisic acid demonstrated that MBO and a large fraction of the monoterpene flux, presumably linalool, could be limited at the scale of seconds to minutes by stomatal conductance. Using a previously published model of terpenoid emissions which explicitly accounts for the physico-chemical properties of emitted compounds, we are able to simulate these observed stomatal effects, whether induced through experimentation or arising under naturally fluctuation conditions of temperature and light. This study shows unequivocally that, under naturally occurring field conditions, de novo light dependent monoterpenes can comprise a large fraction of emissions. Differences between the monoterpene composition of ambient air and needle emissions imply a significant non-needle emission source enriched in ?-3-carene.

  5. Project Startup: Evaluating Coca-Cola's Class 8 Hybrid-Electric Delivery Trucks (Fact Sheet), Vehicle Technologies Program (VTP)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Although the largest trucks-Class 8, with a gross vehicle weight rating (GVWR) above 33,000 lb-make up only 1% of the U.S. highway vehicle fleet, they are responsible for almost 20% of highway petroleum consumption. 1 Improving the efficiency of Class 8 trucks through strategies such as alternative fuels and hybridization is a high-impact way to reduce petroleum consumption and associated emissions. The National Renewable Energy Laboratory's (NREL's) Fleet Test and Evaluation Team is evaluating

  6. Transportation Sector Model of the National Energy Modeling System. Volume 2 -- Appendices: Part 2

    SciTech Connect (OSTI)

    1998-01-01

    The attachments contained within this appendix provide additional details about the model development and estimation process which do not easily lend themselves to incorporation in the main body of the model documentation report. The information provided in these attachments is not integral to the understanding of the model`s operation, but provides the reader with opportunity to gain a deeper understanding of some of the model`s underlying assumptions. There will be a slight degree of replication of materials found elsewhere in the documentation, made unavoidable by the dictates of internal consistency. Each attachment is associated with a specific component of the transportation model; the presentation follows the same sequence of modules employed in Volume 1. The following attachments are contained in Appendix F: Fuel Economy Model (FEM)--provides a discussion of the FEM vehicle demand and performance by size class models; Alternative Fuel Vehicle (AFV) Model--describes data input sources and extrapolation methodologies; Light-Duty Vehicle (LDV) Stock Model--discusses the fuel economy gap estimation methodology; Light Duty Vehicle Fleet Model--presents the data development for business, utility, and government fleet vehicles; Light Commercial Truck Model--describes the stratification methodology and data sources employed in estimating the stock and performance of LCT`s; Air Travel Demand Model--presents the derivation of the demographic index, used to modify estimates of personal travel demand; and Airborne Emissions Model--describes the derivation of emissions factors used to associate transportation measures to levels of airborne emissions of several pollutants.

  7. Copy of Forms FE-746R 2015 Edits v3 BAN (FINAL) LNG Exports - Truck.xls

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    LNG Exports (Truck) Monthly Sales and Price Report Month/Year: _______________Exporter (Authorization Holder):________________________________________________________________ E-Mail Address:_____________________________ Address:_______________________________________________________ Preparer of Report:__________________________ Telephone No.:______________________ FAX No.:____________________ Exports Made Pursuant to DOE Opinion and Order No.________, under FE Docket No._______________. (1) (2)

  8. Copy of Forms FE-746R 2015 Edits v3 BAN (FINAL) LNG Imports - Truck.xls

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    LNG Imports (Truck) Monthly Sales and Price Report Month/Year: _______________ Importer (Authorization Holder):_________________________________________________________________ E-Mail Address:_____________________________ Address:_______________________________________________________ Preparer of Report:__________________________ Telephone No.:___________________ FAX No.:____________________ Imports Made Pursuant to DOE Opinion and Order No.________, under FE Docket No._______________. (1) (2)

  9. Assessing Potential Exposure from Truck Transport of Low-level Radioactive Waste to the Nevada Test Site

    SciTech Connect (OSTI)

    J. Miller; D. Shafer; K. Gray; B. Church; S. Campbell; B. Holz

    2005-08-01

    Since 1980, over 651,558 m{sup 3} (23,000,000 ft{sup 3}) of low-level radioactive waste (LLW) have been disposed of at the Nevada Test Site (NTS) by shallow land burial. Since 1988, the majority of this waste has been generated at other United States (U.S.) Department of Energy (DOE) and Department of Defense (DoD) sites and facilities in the U.S. Between fiscal year (FY) 2002 and the publication date, the volumes of LLW being shipped by truck to the NTS increased sharply with the accelerated closure of DOE Environmental Management (EM) Program sites (DOE, 2002). The NTS is located 105 km (65 mi) northwest of Las Vegas, Nevada, in the U.S. There continue to be public concerns over the safety of LLW shipments to the NTS. They can be broadly divided into two categories: (1) the risk of accidents involving trucks traveling on public highways; and (2) whether residents along transportation routes receive cumulative exposure from individual LLW shipments that pose a long-term health risk. The DOE and U.S. Department of Transportation (DOT) regulations ensure that radiation exposure from truck shipments to members of the public is negligible. Nevertheless, particularly in rural communities along transportation routes in Utah and Nevada, there is a perceived risk from members of the public about cumulative exposure, particularly when ''Main Street'' and the routes being used by LLW trucks are one in the same. To provide an objective assessment of gamma radiation exposure to members of the public from LLW transport by truck, the Desert Research Institute (DRI) and the DOE, National Nuclear Security Administration Nevada Site Office (NNSA/NSO) established a stationary and automated array of four pressurized ion chambers (PICs) in a vehicle pullout for LLW trucks to pass through just outside the entrance to the NTS. The PICs were positioned at a distance of 1.0 m (3.3 ft) from the sides of the truck trailer and at a height of 1.5 m (5.0 ft) to simulate conditions that a

  10. Assessing Potential Exposure from Truck Transport of Low-level Radioactive Waste to the Nevada Test Site

    SciTech Connect (OSTI)

    Miller, J; Shafer, D; Gray, K; Church, B; Campbell, S; Holtz, B.

    2005-08-15

    Since 1980, over 651,558 m{sup 3} (23,000,000 ft{sup 3}) of low-level radioactive waste (LLW) have been disposed of at the Nevada Test Site (NTS) by shallow land burial. Since 1988, the majority of this waste has been generated at other United States (U.S.) Department of Energy (DOE) and Department of Defense (DoD) sites and facilities in the U.S. Between fiscal year (FY) 2002 and the publication date, the volumes of LLW being shipped by truck to the NTS increased sharply with the accelerated closure of DOE Environmental Management (EM) Program sites (DOE, 2002). The NTS is located 105 km (65 mi) northwest of Las Vegas, Nevada, in the U.S. There continue to be public concerns over the safety of LLW shipments to the NTS. They can be broadly divided into two categories: (1) the risk of accidents involving trucks traveling on public highways; and (2) whether residents along transportation routes receive cumulative exposure from individual LLW shipments that pose a long-term health risk. The DOE and U.S. Department of Transportation (DOT) regulations ensure that radiation exposure from truck shipments to members of the public is negligible. Nevertheless, particularly in rural communities along transportation routes in Utah and Nevada, there is a perceived risk from members of the public about cumulative exposure, particularly when ''Main Street'' and the routes being used by LLW trucks are one in the same. To provide an objective assessment of gamma radiation exposure to members of the public from LLW transport by truck, the Desert Research Institute (DRI) and the DOE, National Nuclear Security Administration Nevada Site Office (NNSA/NSO) established a stationary and automated array of four pressurized ion chambers (PICs) in a vehicle pullout for LLW trucks to pass through just outside the entrance to the NTS. The PICs were positioned at a distance of 1.0 m (3.3 ft) from the sides of the truck trailer and at a height of 1.5 m (5.0 ft) to simulate conditions that a

  11. EFFECT OF IMPACT LIMITER MATERIAL DEGRATION ON STRUCTURAL INTEGRITY OF 9975 PACKAGE SUBJECTED TO TWO FORKLIFT TRUCK IMPACT

    SciTech Connect (OSTI)

    Wu, T

    2007-07-09

    This paper evaluates the effect of the impact limiter material degradation on the structural integrity of the 9975 package containment vessel during a postulated accident event of forklift truck collision. The analytical results show that the primary and secondary containment vessels remain structurally intact for Celotex material degraded to 20% of the baseline value.

  12. Light Source

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    a Light Source Data and Analysis Framework at NERSC Jack Deslippe, Shane Canon, Eli Dart, Abdelilah Essiari, Alexander Hexemer, Dula Parkinson, Simon Patton, Craig Tull + Many More The ALS Data Needs September 21, 2010 - NIST (MD) Light source data volumes are growing many times faster than Moore's law. ● Light source luminosity ● Detector resolution & rep-rates ● Sample automation BES user facilities serve 10,000 scientists and engineers every year. Mostly composed of many small

  13. Lighting Renovations

    Broader source: Energy.gov [DOE]

    When undertaking a lighting renovation in a Federal building, daylighting is the primary renewable energy opportunity. Photovoltaics (PV) also present an excellent opportunity. While this guide...

  14. Cerenkov Light

    SciTech Connect (OSTI)

    Slifer, Karl

    2013-06-13

    The bright blue glow from nuclear reactors is Cerenkov light. Karl Slifer describes how nuclear physicists can use this phenomenon to study the nucleus of the atom.

  15. Cerenkov Light

    ScienceCinema (OSTI)

    Slifer, Karl

    2014-05-22

    The bright blue glow from nuclear reactors is Cerenkov light. Karl Slifer describes how nuclear physicists can use this phenomenon to study the nucleus of the atom.

  16. Residential Lighting

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    & Events Expand News & Events Skip navigation links Residential Residential Lighting Energy Star Appliances Consumer Electronics Heat Pump Water Heaters Electric Storage Water...

  17. Fuel Economy Improvement Potential of a Heavy Duty Truck using V2x Communication

    SciTech Connect (OSTI)

    LaClair, Tim J; Verma, Rajeev; Norris, Sarah; Cochran, Robert

    2014-01-01

    In this paper, we introduce an intelligent driver assistance system to reduce fuel consumption in heavy duty vehicles irrespective of the driving style of the driver. We specifically study the potential of V2I and V2V communications to reduce fuel consumption in heavy duty trucks. Most ITS communications today are oriented towards vehicle safety, with communications strategies and hardware that tend to focus on low latency. This has resulted in technologies emerging with a relatively limited range for the communications. For fuel economy, it is expected that most benefits will be derived with greater communications distances, at the scale of many hundred meters or several kilometers, due to the large inertia of heavy duty vehicles. It may therefore be necessary to employ different communications strategies for ITS applications aimed at fuel economy and other environmental benefits than what is used for safety applications in order to achieve the greatest benefits.

  18. Oxidation catalyst systems for emission control of LPG-powered forklift trucks

    SciTech Connect (OSTI)

    Majewski, W.A.; Martin, E.P.; Pietrasz, E.

    1994-10-01

    An oxidation catalyst was installed on an industrial LPG-powered forklift truck. For high conversion efficiency in an oxidation system on a rich burning engine a secondary air supply to the catalyst is necessary. Two simple and cost-effective ways of secondary air supply were tested: an air valve and a venturi type injector. The amount of secondary air supplied by both devices was measured under a variety of conditions - different engine speed, load and exhaust system pressure. Carbon monoxide emissions and the catalyst performance were measured and evaluated in terms of the secondary air flow. Advantages and drawbacks of the air valve and venturi injector systems are discussed and compared. 1 refs., 11 figs., 3 tabs.

  19. UF{sub 6} tiedowns for truck transport - right way/wrong way

    SciTech Connect (OSTI)

    Stout, F.W. Jr.

    1991-12-31

    Tiedown systems for truck transport of UF{sub 6} must be defined and controlled to assure the least risk for hauling the material over the highways. This paper and an associated poster display will present the current status of regulatory criteria for tiedowns, analyze the structural stresses involved in tiedowns for two major UF{sub 6} packaging systems, the 21PF series of overpacks and the 48 in. diameter shipping cylinders, and will present photographs showing some {open_quote}right ways{close_quotes} and some {open_quotes}wrong (or risky) ways{close_quotes} currently used for tiedown systems. Risky tiedown methods must be replaced with safer less risky methods to insure the safe transport of UF{sub 6}.

  20. Diesel Fueled SOFC for Class 7/Class 8 On-Highway Truck Auxiliary Power

    SciTech Connect (OSTI)

    Vesely, Charles John-Paul; Fuchs, Benjamin S.; Booten, Chuck W.

    2010-03-31

    The following report documents the progress of the Cummins Power Generation (CPG) Diesel Fueled SOFC for Class 7/Class 8 On-Highway Truck Auxiliary Power (SOFC APU) development and final testing under the U.S. Department of Energy (DOE) Energy Efficiency and Renewable Energy (EERE) contract DE-FC36-04GO14318. This report overviews and summarizes CPG and partner development leading to successful demonstration of the SOFC APU objectives and significant progress towards SOFC commercialization. Significant SOFC APU Milestones: Demonstrated: Operation meeting SOFC APU requirements on commercial Ultra Low Sulfur Diesel (ULSD) fuel. SOFC systems operating on dry CPOX reformate. Successful start-up and shut-down of SOFC APU system without inert gas purge. Developed: Low cost balance of plant concepts and compatible systems designs. Identified low cost, high volume components for balance of plant systems. Demonstrated efficient SOFC output power conditioning. Demonstrated SOFC control strategies and tuning methods.