National Library of Energy BETA

Sample records for aviation reciprocating engines

  1. Advanced Reciprocating Engine Systems

    Energy.gov [DOE]

    The Advanced Reciprocating Engine Systems (ARES) program is designed to promote separate but parallel engine development between the major stationary, gaseous fueled engine manufacturers in the...

  2. Advanced Reciprocating Engine Systems (ARES)

    Energy.gov [DOE]

    Advanced Natural Gas Reciprocating Engines Increase Efficiency and Reduce Emissions for Distributed Power Generation Applications

  3. Gas-Fired Reciprocating Engines

    Energy.gov [DOE]

    The reciprocating, or piston-driven, engine is a widespread and well-known technology. Also called internal combustion engines, reciprocating engines require fuel, air, compression, and a combustion source to function. Depending on the ignition source, they generally fall into two categories: (1) spark-ignited engines, typically fueled by gasoline or natural gas, and (2) compression-ignited engines, typically fueled by diesel oil fuel.

  4. Advanced Natural Gas Reciprocating Engines (ARES) - Presentation...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Cummins, Inc., June 2011 Advanced Natural Gas Reciprocating Engines (ARES) - Presentation by Cummins, Inc., June 2011 Presentation on Advanced Natural Gas Reciprocating Engines ...

  5. Rotary-reciprocal combustion engines

    SciTech Connect

    Blount, D.H.

    1992-10-06

    This patent describes an internal combustion engine of the rotary-reciprocal type. It comprises a housing formed with a peripheral wall; a rotor; and a shaft for the rotor.

  6. Advanced Natural Gas Reciprocating Engines (ARES) - Presentation...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Dresser Waukesha, June 2011 Advanced Natural Gas Reciprocating Engines (ARES) - Presentation by Dresser Waukesha, June 2011 Presentation on Advanced Natural Gas Reciprocating ...

  7. Advanced Natural Gas Reciprocating Engines (ARES) - Presentation...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Caterpillar, Inc., June 2011 Advanced Natural Gas Reciprocating Engines (ARES) - Presentation by Caterpillar, Inc., June 2011 Presentation on Advanced Natural Gas Reciprocating ...

  8. Rotary reciprocating internal combustion engine

    SciTech Connect

    Ogren, W.

    1992-06-23

    This patent describes a rotary reciprocating internal combustion engine. It comprises a housing which comprises a cylindrical head with two end and frame plates mounted on both ends of the head enclose the head, the head including a pair of fuel into ports and a pair of exhaust ports, a pair of ring gears; a rotor axially aligned in the cylindrical head and comprising a set of four radially extending cylinders and pistons reciprocable in the cylinders; a power take off shaft fixed to the crank support plates and axially aligned with the rotor; oiling means for oiling the rotary engine; and a set of eight crank gears.

  9. Advanced Reciprocating Engine Systems (ARES) R&D - Presentation...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Reciprocating Engine Systems (ARES) R&D - Presentation by Argonne National Laboratory, June 2011 Advanced Reciprocating Engine Systems (ARES) R&D - Presentation by Argonne National ...

  10. Advanced Natural Gas Reciprocating Engine(s)

    SciTech Connect

    Kwok, Doris; Boucher, Cheryl

    2009-09-30

    Energy independence and fuel savings are hallmarks of the nation’s energy strategy. The advancement of natural gas reciprocating engine power generation technology is critical to the nation’s future. A new engine platform that meets the efficiency, emissions, fuel flexibility, cost and reliability/maintainability targets will enable American manufacturers to have highly competitive products that provide substantial environmental and economic benefits in the US and in international markets. Along with Cummins and Waukesha, Caterpillar participated in a multiyear cooperative agreement with the Department of Energy to create a 50% efficiency natural gas powered reciprocating engine system with a 95% reduction in NOx emissions by the year 2013. This platform developed under this agreement will be a significant contributor to the US energy strategy and will enable gas engine technology to remain a highly competitive choice, meeting customer cost of electricity targets, and regulatory environmental standard. Engine development under the Advanced Reciprocating Engine System (ARES) program was divided into phases, with the ultimate goal being approached in a series of incremental steps. This incremental approach would promote the commercialization of ARES technologies as soon as they emerged from development and would provide a technical and commercial foundation of later-developing technologies. Demonstrations of the Phase I and Phase II technology were completed in 2004 and 2008, respectively. Program tasks in Phase III included component and system development and testing from 2009-2012. Two advanced ignition technology evaluations were investigated under the ARES program: laser ignition and distributed ignition (DIGN). In collaboration with Colorado State University (CSU), a laser ignition system was developed to provide ignition at lean burn and high boost conditions. Much work has been performed in Caterpillar’s DIGN program under the ARES program. This work

  11. Advanced Reciprocating Engine System (ARES) | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Advanced Reciprocating Engine System (ARES) Advanced Reciprocating Engine System (ARES) The ARES program is designed to promote separate, but parallel engine development among the major stationary, gaseous fueled engine manufacturers in the United States. Advanced Reciprocating Engine Systems (ARES) Brochure (2.28 MB) More Documents & Publications Advanced Natural Gas Reciprocating Engines (ARES) - Presentation by Cummins, Inc., June 2011 Advanced Natural Gas Reciprocating Engines (ARES) -

  12. Advanced Natural Gas Reciprocating Engines (ARES)

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Natural Gas Reciprocating Engines (ARES) Contract: DE-FC26-01CH11080 GE Energy, Dresser Inc. 102010 - 122013 Jim Zurlo, Principal Investigator james.zurlo@ge.com Tel. ...

  13. Advanced Natural Gas Reciprocating Engines (ARES)

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    U.S. DOE Industrial Distributed Energy Portfolio Review Meeting Washington, D.C. June 1-2, 2011 Advanced Natural Gas Reciprocating Engines (ARES) DE-FC26-01CH11079 Caterpillar, ...

  14. Reciprocating Engines in Support of Grid Modernization

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Imagination at work. Herman Wiegman PhD GE Global Research Feb 10, 2016 Reciprocating Engines in Support of Grid Modernization DOE-AMO Workshop Austin, TX Feb 2016 © 2015 General Electric Company - All rights reserved 2 Natural Gas Reciprocating Engines Lean Burn Rich Burn GE (Waukesha, Jenbacher), Caterpillar, Cummins, Cooper, Superior, .... Eff ~38%, NOx <1g/hp-hr , CHP compatible www.eren.doe.gov/deer.html Navigant - 27 GW of NG-Generators installed by 2024 © 2015 General Electric

  15. Combined Heat and Power Technology Fact Sheets Series: Reciprocating Engines

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Power Technology Fact Sheet Series Reciprocating Engines Reciprocating internal combustion engines are a mature tech- nology used for power generation, transportation, and many other purposes. Worldwide production of reciprocating internal combustion engines exceeds 200 million units per year. 1 For CHP installations, reciprocating engines have capacities that range from 10 kW to 10 MW. Multiple engines can be inte- grated to deliver capacities exceeding 10 MW in a single plant. Several

  16. A reciprocating rotating-block engine

    SciTech Connect

    O`Connor, L.

    1995-06-01

    This article describes the Newbold power plant, a lightweight, clean burning, and efficient engine that is designed to be used in a variety of small-engine applications, from ultralight planes to wheelchairs. A new turbo rotary-power engine brings together different design concepts from engine technology, including the rotary motion of a block, which is applied in a rotary engine, and the reciprocating motion of pistons. The new power plant also uses an air delivery system that operates similar to a turbojet engine. The turbo rotary-power engine, developed by Vernon Newbold, founder of Newbold and Associates, in Lyons, CO, produces power from the heat generated by combustion of most liquid or gaseous fuels. Production engines, expected to be built in August, will be optimized to operate using diesel fuel.

  17. Advanced Natural Gas Reciprocating Engine(s)

    SciTech Connect

    Pike, Edward

    2014-03-31

    The objective of the Cummins ARES program, in partnership with the US Department of Energy (DOE), is to develop advanced natural gas engine technologies that increase engine system efficiency at lower emissions levels while attaining lower cost of ownership. The goals of the project are to demonstrate engine system achieving 50% Brake Thermal Efficiency (BTE) in three phases, 44%, 47% and 50% (starting baseline efficiency at 36% BTE) and 0.1 g/bhp-hr NOx system out emissions (starting baseline NOx emissions at 2 – 4 g/bhp-hr NOx). Primary path towards above goals include high Brake Mean Effective Pressure (BMEP), improved closed cycle efficiency, increased air handling efficiency and optimized engine subsystems. Cummins has successfully demonstrated each of the phases of this program. All targets have been achieved through application of a combined set of advanced base engine technologies and Waste Heat Recovery from Charge Air and Exhaust streams, optimized and validated on the demonstration engine and other large engines. The following architectures were selected for each Phase: Phase 1: Lean Burn Spark Ignited (SI) Key Technologies: High Efficiency Turbocharging, Higher Efficiency Combustion System. In production on the 60/91L engines. Over 500MW of ARES Phase 1 technology has been sold. Phase 2: Lean Burn Technology with Exhaust Waste Heat Recovery (WHR) System Key Technologies: Advanced Ignition System, Combustion Improvement, Integrated Waste Heat Recovery System. Base engine technologies intended for production within 2 to 3 years Phase 3: Lean Burn Technology with Exhaust and Charge Air Waste Heat Recovery System Key Technologies: Lower Friction, New Cylinder Head Designs, Improved Integrated Waste Heat Recovery System. Intended for production within 5 to 6 years Cummins is committed to the launch of next generation of large advanced NG engines based on ARES technology to be commercialized worldwide.

  18. Advanced Natural Gas Reciprocating Engines (ARES) - Presentation by

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Cummins, Inc., June 2011 | Department of Energy Cummins, Inc., June 2011 Advanced Natural Gas Reciprocating Engines (ARES) - Presentation by Cummins, Inc., June 2011 Presentation on Advanced Natural Gas Reciprocating Engines (ARES), given by Edward Lyford-Pike of Cummins, Inc., at the U.S. DOE Industrial Distributed Energy Portfolio Review Meeting in Washington, D.C. on June 1-2, 2011. ares_lyford-pike.pdf (1.09 MB) More Documents & Publications Advanced Reciprocating Engine System

  19. Integrated CHP/Advanced Reciprocating Internal Combustion Engine...

    Office of Environmental Management (EM)

    to meet local air quality authority emissions restrictions. Integrated Combined Heat and PowerAdvanced Reciprocating Internal Combustion Engine System for Landfill Gas to...

  20. E-Alerts: Combustion, engines, and propellants (reciprocation and rotating combustion engines). E-mail newsletter

    SciTech Connect

    1999-04-01

    Design, performance, and testing of reciprocating and rotating engines of various configurations for all types of propulsion. Includes internal and external combustion engines; engine exhaust systems; engine air systems components; engine structures; stirling and diesel engines.

  1. Reciprocating Engines (DOE CHP Technology Fact Sheet Series) – Fact Sheet, 2016

    Office of Energy Efficiency and Renewable Energy (EERE)

    Reciprocating internal combustion engines are a mature technology used for power generation, transportation, and many other purposes. For CHP installations, reciprocating engines have capacities...

  2. Ultra Clean and Efficient Natural Gas Reciprocating Engine for CHP -

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Presentation by Dresser Waukesha, June 2011 | Department of Energy Ultra Clean and Efficient Natural Gas Reciprocating Engine for CHP - Presentation by Dresser Waukesha, June 2011 Ultra Clean and Efficient Natural Gas Reciprocating Engine for CHP - Presentation by Dresser Waukesha, June 2011 Presentation on an Ultra Clean 1.1 MW High Efficiency Natural Gas Engine Powered Combined Heat and Power (CHP) System, given by Jim Zurlo of Dresser Waukesha, at the U.S. DOE Industrial Distributed

  3. Reciprocating Engines (DOE CHP Technology Fact Sheet Series)...

    Energy.gov [DOE] (indexed site)

    For CHP installations, reciprocating engines have capacities that range from 10 kW to 10 ... generation, which are most often fueled with natural gas, are well suited for CHP service. ...

  4. Advanced Natural Gas Reciprocating Engines (ARES) - Presentation by

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Caterpillar, Inc., June 2011 | Department of Energy Caterpillar, Inc., June 2011 Advanced Natural Gas Reciprocating Engines (ARES) - Presentation by Caterpillar, Inc., June 2011 Presentation on Advanced Natural Gas Reciprocating Engines (ARES), given by Martin Willi of Caterpillar, Inc., at the U.S. DOE Industrial Distributed Energy Portfolio Review Meeting in Washington, D.C. on June 1-2, 2011. ares_willi.pdf (853.42 KB) More Documents & Publications CHP Research and Development -

  5. Technologies for Gaseous Fueled Advanced Reciprocating Engine Systems (ARES)

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Technologies for Gaseous Fueled Advanced Reciprocating Engine Systems DE-AC02-06CH 11357 Argonne National Laboratory/ ARES team FY2011 Sreenath Gupta Argonne National Laboratory sgupta@anl.gov; (630) 252 6089 U.S. DOE Industrial Distributed Energy Portfolio Review Meeting Washington, D.C. June 1-2, 2011 Develop technologies to improve efficiency and reduce emissions of reciprocating engines that use natural gas/ opportunity fuels. 1 Distributed Energy Research Center (DERC): * A user facility to

  6. Advanced Natural Gas Reciprocating Engines (ARES)

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Efficiency is key 3 State of the Art Pre-ARES Engines Characterized by the following: Limited investment in natural gas engines, based on derivatives of larger volume ...

  7. Aviation

    Directives, Delegations, and Other Requirements [Office of Management (MA)]

    1995-09-25

    To establish framework for an effective aviation program. Cancels DOE 5480.13A. Canceled by DOE O 440.2A.

  8. Aviation

    Directives, Delegations, and Other Requirements [Office of Management (MA)]

    2000-12-08

    To establish the framework for an effective aviation program, and reduce or eliminate accidental losses and injuries in Departmental and contractor aviation operations. It includes Change 1, Change 2, and Change3. (Cancels DOE 5480.13A) Canceled DOE O 440.2A.

  9. Integrating Gasifiers and Reciprocating Engine Generators to Utilize Biomass-Based Fuel

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Adapting On-site Electrical Generation Platforms for Producer Gas ADVANCED MANUFACTURING OFFICE Integrating Gasifiers and Reciprocating Engine Generators to Utilize Biomass- Based Fuel This project integrated a biomass gasifer and a reciprocating engine generator set into a combined platform, enabling electricity generation from waste biomass while reducing diesel fuel consumption and greenhouse gas (GHG) emissions. Introduction Internal combustion reciprocating engine generators (gensets) are

  10. Organic rankine cycle system for use with a reciprocating engine

    DOEpatents

    Radcliff, Thomas D.; McCormick, Duane; Brasz, Joost J.

    2006-01-17

    In a waste heat recovery system wherein an organic rankine cycle system uses waste heat from the fluids of a reciprocating engine, provision is made to continue operation of the engine even during periods when the organic rankine cycle system is inoperative, by providing an auxiliary pump and a bypass for the refrigerant flow around the turbine. Provision is also made to divert the engine exhaust gases from the evaporator during such periods of operation. In one embodiment, the auxiliary pump is made to operate simultaneously with the primary pump during normal operations, thereby allowing the primary pump to operate at lower speeds with less likelihood of cavitation.

  11. Combustion characterization of methylal in reciprocating engines

    SciTech Connect

    Dodge, L.; Naegeli, D.

    1994-06-01

    Methylal, CH{sub 3}OCH{sub 2}OCH{sub 3}, also known as dimethoxy-methane, is unique among oxygenates in that it has a low autoignition temperature, no carbon-carbon bonds, and is soluble in middle distillate fuels. Because of these properties, methylal has been shown to be a favorable fuel additive for reducing smoke in diesel engines. Recent measurements of ignition delay times indicate that methylal has a cetane number in the range of 45-50, which is compatible with diesel fuels. Engine tests have shown that adding methylal to diesel fuel significantly reduces smoke emissions. Gaseous emissions and combustion efficiencies obtained with methylal/diesel fuel blends remain essentially the same as those measured using neat diesel fuel. Lubricity measurements of methylal/diesel fuel blends with a ball on cylinder lubrication evaluator (BOCLE) show that methylal improves the lubricity of diesel fuel. Even though additions of methylal lower the fuel viscosity, the results of the BOCLE tests indicate that the methylal/diesel fuel blends cause less pump wear than neat diesel fuel. The one drawback is that methylal has a low boiling point (42{degrees}C) and a relatively high vapor pressure. As a result, it lowers the flash point of diesel fuel and causes a potential fuel tank flammability hazard. One solution to this increased volatility is to make polyoxymethylenes with the general formula of CH{sub 3}O(CH{sub 2}O){sub x}CH{sub 3} where x > 2. The molecules are similar to methylal, but have higher molecular weights and thus higher viscosities and substantially lower vapor pressures. Therefore, their flash points will be compatible with regular diesel fuel. The polyoxymethylenes are expected to have combustion properties similar to methylal. It is theorized that by analogy with hydrocarbons, the ignition quality (i.e., cetane number) of the polyoxymethylenes will be better than that of methylal.

  12. Caterpillar`s advanced reciprocating engine for distributed generation markets

    SciTech Connect

    Gerber, G.; Brandes, D.; Reinhart, M.; Nagel, G.; Wong, E.

    1999-11-01

    Competition in energy markets and federal and state policy advocating clean, advanced technologies as means to achieve environmental and global climate change goals are clear drivers to original equipment manufacturers of prime movers. Underpinning competition are the principle of consumer choice to facilitate retail competition, and the desire to improve system and grid reliability. Caterpillar`s Gas Engine Division is responding to the market`s demand for a more efficient, lower lifecycle cost engine with reduced emissions. Cat`s first generation TARGET engine will be positioned to effectively serve distributed generation and combined heat and power (CHP) applications. TARGET (The Advanced Reciprocating Gas Engine Technology) will embody Cat`s product attributes: durability, reliability, and competitively priced life cycle cost products. Further, Caterpillar`s nationwide, fully established dealer sales and service ensure continued product support subsequent to the sale and installation of the product.

  13. Advanced Reciprocating Engine Systems (ARES) R&D - Presentation by Argonne

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    National Laboratory, June 2011 | Department of Energy Reciprocating Engine Systems (ARES) R&D - Presentation by Argonne National Laboratory, June 2011 Advanced Reciprocating Engine Systems (ARES) R&D - Presentation by Argonne National Laboratory, June 2011 Presentation on Technologies for Gaseous Fueled Advanced Reciprocating Engine Systems (ARES) R&D, given by Sreenath Gupta of Argonne National Laboratory, at the U.S. DOE Industrial Distributed Energy Portfolio Review Meeting in

  14. Advanced Natural Gas Reciprocating Engines (ARES)- Presentation by Dresser Waukesha, June 2011

    Office of Energy Efficiency and Renewable Energy (EERE)

    Presentation on Advanced Natural Gas Reciprocating Engines (ARES), given by Jim Zurlo at the U.S. DOE Industrial Distributed Energy Portfolio Review Meeting in Washington, D.C. on June 1-2, 2011.

  15. Advanced Reciprocating Engine Systems (ARES): Raising the Bar on Engine Technology with Increased Efficiency and Reduced Emissions, at Attractive Costs

    SciTech Connect

    2009-02-01

    This is a fact sheet on the U.S. Department of Energy's (DOE) Advanced Reciprocating Engine Systems program (ARES), which is designed to promote separate, but parallel engine development between the major stationary, gaseous fueled engine manufacturers in the United States.

  16. LOW-ENGINE-FRICTION TECHNOLOGY FOR ADVANCED NATURAL-GAS RECIPROCATING ENGINES

    SciTech Connect

    Victor Wong; Tian Tian; Luke Moughon; Rosalind Takata; Jeffrey Jocsak

    2006-03-31

    This program aims at improving the efficiency of advanced natural-gas reciprocating engines (ANGRE) by reducing piston and piston ring assembly friction without major adverse effects on engine performance, such as increased oil consumption and wear. An iterative process of simulation, experimentation and analysis is being followed towards achieving the goal of demonstrating a complete optimized low-friction engine system. To date, a detailed set of piston and piston-ring dynamic and friction models have been developed and applied that illustrate the fundamental relationships among mechanical, surface/material and lubricant design parameters and friction losses. Demonstration of low-friction ring-pack designs in the Waukesha VGF 18GL engine confirmed total engine FEMP (friction mean effective pressure) reduction of 7-10% from the baseline configuration without significantly increasing oil consumption or blow-by flow. This represents a substantial (30-40%) reduction of the ringpack friction alone. The measured FMEP reductions were in good agreement with the model predictions. Further improvements via piston, lubricant, and surface designs offer additional opportunities. Tests of low-friction lubricants are in progress and preliminary results are very promising. The combined analysis of lubricant and surface design indicates that low-viscosity lubricants can be very effective in reducing friction, subject to component wear for extremely thin oils, which can be mitigated with further lubricant formulation and/or engineered surfaces. Hence a combined approach of lubricant design and appropriate wear reduction offers improved potential for minimum engine friction loss. Piston friction studies indicate that a flatter piston with a more flexible skirt, together with optimizing the waviness and film thickness on the piston skirt offer significant friction reduction. Combined with low-friction ring-pack, material and lubricant parameters, a total power cylinder friction

  17. LOW-ENGINE-FRICTION TECHNOLOGY FOR ADVANCED NATURAL-GAS RECIPROCATING ENGINES

    SciTech Connect

    Victor Wong; Tian Tian; Luke Moughon; Rosalind Takata; Jeffrey Jocsak

    2005-09-30

    This program aims at improving the efficiency of advanced natural-gas reciprocating engines (ANGRE) by reducing piston and piston ring assembly friction without major adverse effects on engine performance, such as increased oil consumption and wear. An iterative process of simulation, experimentation and analysis is being followed towards achieving the goal of demonstrating a complete optimized low-friction engine system. To date, a detailed set of piston and piston-ring dynamic and friction models have been developed and applied that illustrate the fundamental relationships between design parameters and friction losses. Low friction ring designs have already been recommended in a previous phase, with full-scale engine validation partially completed. Current accomplishments include the addition of several additional power cylinder design areas to the overall system analysis. These include analyses of lubricant and cylinder surface finish and a parametric study of piston design. The Waukesha engine was found to be already well optimized in the areas of lubricant, surface skewness and honing cross-hatch angle, where friction reductions of 12% for lubricant, and 5% for surface characteristics, are projected. For the piston, a friction reduction of up to 50% may be possible by controlling waviness alone, while additional friction reductions are expected when other parameters are optimized. A total power cylinder friction reduction of 30-50% is expected, translating to an engine efficiency increase of two percentage points from its current baseline towards the goal of 50% efficiency. Key elements of the continuing work include further analysis and optimization of the engine piston design, in-engine testing of recommended lubricant and surface designs, design iteration and optimization of previously recommended technologies, and full-engine testing of a complete, optimized, low-friction power cylinder system.

  18. Low-Engine-Friction Technology for Advanced Natural-Gas Reciprocating Engines

    SciTech Connect

    Victor Wong; Tian Tian; G. Smedley; L. Moughon; Rosalind Takata; J. Jocsak

    2006-11-30

    This program aims at improving the efficiency of advanced natural-gas reciprocating engines (ANGRE) by reducing piston and piston ring assembly friction without major adverse effects on engine performance, such as increased oil consumption and wear. An iterative process of simulation, experimentation and analysis has been followed towards achieving the goal of demonstrating a complete optimized low-friction engine system. In this program, a detailed set of piston and piston-ring dynamic and friction models have been adapted and applied that illustrate the fundamental relationships among mechanical, surface/material and lubricant design parameters and friction losses. Demonstration of low-friction ring-pack designs in the Waukesha VGF 18GL engine confirmed ring-pack friction reduction of 30-40%, which translates to total engine FEMP (friction mean effective pressure) reduction of 7-10% from the baseline configuration without significantly increasing oil consumption or blow-by flow. The study on surface textures, including roughness characteristics, cross hatch patterns, dimples and grooves have shown that even relatively small-scale changes can have a large effect on ring/liner friction, in some cases reducing FMEP by as much as 30% from a smooth surface case. The measured FMEP reductions were in good agreement with the model predictions. The combined analysis of lubricant and surface design indicates that low-viscosity lubricants can be very effective in reducing friction, subject to component wear for extremely thin oils, which can be mitigated with further lubricant formulation and/or engineered surfaces. Hence a combined approach of lubricant design and appropriate wear reduction offers improved potential for minimum engine friction loss. Testing of low-friction lubricants showed that total engine FMEP reduced by up to {approx}16.5% from the commercial reference oil without significantly increasing oil consumption or blow-by flow. Piston friction studies

  19. Ultra Clean and Efficient Natural Gas Reciprocating Engine for...

    Energy.gov [DOE] (indexed site)

    Presentation on an Ultra Clean 1.1 MW High Efficiency Natural Gas Engine Powered Combined Heat and Power (CHP) System, given by Jim Zurlo of Dresser Waukesha, at the U.S. DOE ...

  20. Injector spray characterization of methanol in reciprocating engines

    SciTech Connect

    Dodge, L.; Naegeli, D.

    1994-06-01

    This report covers a study that addressed cold-starting problems in alcohol-fueled, spark-ignition engines by using fine-spray port-fuel injectors to inject fuel directly into the cylinder. This task included development and characterization of some very fine-spray, port-fuel injectors for a methanol-fueled spark-ignition engine. After determining the spray characteristics, a computational study was performed to estimate the evaporation rate of the methanol fuel spray under cold-starting and steady-state conditions.

  1. Evaluation of Reformer Produced Synthesis Gas for Emissions Reductions in Natural Gas Reciprocating Engines

    SciTech Connect

    Mark Scotto

    2010-05-30

    Rolls-Royce Fuel Cell Systems (US) Inc. (RRFCS) has developed a system that produces synthesis gas from air and natural gas. A near-term application being considered for this technology is synthesis gas injection into reciprocating engines for reducing NO{sub x} emissions. A proof of concept study using bottled synthesis gas and a two-stroke reciprocating engine showed that injecting small amounts of high-flammable content synthesis gas significantly improved combustion stability and enabled leaner engine operation resulting in over 44% reduction in NO{sub x} emissions. The actual NO{sub x} reduction that could be achieved in the field is expected to be engine specific, and in many cases may be even greater. RRFCS demonstrated that its synthesis gas generator could produce synthesis gas with the flammable content that was successfully used in the engine testing. An economic analysis of the synthesis gas approach estimates that its initial capital cost and yearly operating cost are less than half that of a competing NO{sub x} reduction technology, Selective Catalytic Reduction. The next step in developing the technology is an integrated test of the synthesis gas generator with an engine to obtain reliability data for system components and to confirm operating cost. RRFCS is actively pursuing opportunities to perform the integrated test. A successful integrated test would demonstrate the technology as a low-cost option to reduce NO{sub x} emissions from approximately 6,000 existing two-stroke, natural gas-fired reciprocating engines used on natural gas pipelines in North America. NO{sub x} emissions reduction made possible at a reasonable price by this synthesis gas technology, if implemented on 25% of these engines, would be on the order of 25,000 tons/year.

  2. Evaluation of Reformer Produced Synthesis Gas for Emissions Reductions in Natural Gas Reciprocating Engines

    SciTech Connect

    Mark V. Scotto; Mark A. Perna

    2010-05-30

    Rolls-Royce Fuel Cell Systems (US) Inc. (RRFCS) has developed a system that produces synthesis gas from air and natural gas. A near-term application being considered for this technology is synthesis gas injection into reciprocating engines for reducing NOx emissions. A proof of concept study using bottled synthesis gas and a two-stroke reciprocating engine showed that injecting small amounts of highflammables content synthesis gas significantly improved combustion stability and enabled leaner engine operation resulting in over 44% reduction in NOx emissions. The actual NOx reduction that could be achieved in the field is expected to be engine specific, and in many cases may be even greater. RRFCS demonstrated that its synthesis gas generator could produce synthesis gas with the flammables content that was successfully used in the engine testing. An economic analysis of the synthesis gas approach estimates that its initial capital cost and yearly operating cost are less than half that of a competing NOx reduction technology, Selective Catalytic Reduction. The next step in developing the technology is an integrated test of the synthesis gas generator with an engine to obtain reliability data for system components and to confirm operating cost. RRFCS is actively pursuing opportunities to perform the integrated test. A successful integrated test would demonstrate the technology as a low-cost option to reduce NOx emissions from approximately 6,000 existing two-stroke, natural gas-fired reciprocating engines used on natural gas pipelines in North America. NOx emissions reduction made possible at a reasonable price by this synthesis gas technology, if implemented on 25% of these engines, would be on the order of 25,000 tons/year.

  3. Fuel-efficient cruise performance model for general aviation piston engine airplanes

    SciTech Connect

    Parkinson, R.C.H.

    1982-01-01

    The uses and limitations of typical Pilot Operating Handbook cruise performance data, for constructing cruise performance models suitable for maximizing specific range, are first examined. These data are found to be inadequate for constructing such models. A new model of General Aviation piston-prop airplane cruise performance is then developed. This model consists of two subsystem models: the airframe-propeller-atmosphere subsystem model; and the engine-atmosphere subsystem model. The new model facilitates maximizing specific range; and by virtue of its simplicity and low volume data storage requirements, appears suitable for airborne microprocessor implementation.

  4. Modeling of reciprocating internal combustion engines for power generation and heat recovery

    SciTech Connect

    Yun, Kyung Tae; Cho, Heejin; Luck, Rogelio; Mago, Pedro J.

    2013-02-01

    This paper presents a power generation and heat recovery model for reciprocating internal combustion engines (ICEs). The purpose of the proposed model is to provide realistic estimates of performance/efficiency maps for both electrical power output and useful thermal output for various capacities of engines for use in a preliminary CHP design/simulation process. The proposed model will serve as an alternative to constant engine efficiencies or empirical efficiency curves commonly used in the current literature for simulations of CHP systems. The engine performance/efficiency calculation algorithm has been coded to a publicly distributed FORTRAN Dynamic Link Library (DLL), and a user friendly tool has been developed using Visual Basic programming. Simulation results using the proposed model are validated against manufacturer’s technical data.

  5. Advanced Reciprocating Engine Systems (ARES) Research at Argonne National Laboratory. A Report

    SciTech Connect

    Gupta, Sreenath; Biruduganti, Muni; Bihari, Bipin; Sekar, Raj

    2014-08-01

    The goals of these experiments were to determine the potential of employing spectral measurements to deduce combustion metrics such as HRR, combustion temperatures, and equivalence ratios in a natural gas-fired reciprocating engine. A laser-ignited, natural gas-fired single-cylinder research engine was operated at various equivalence ratios between 0.6 and 1.0, while varying the EGR levels between 0% and maximum to thereby ensure steady combustion. Crank angle-resolved spectral signatures were collected over 266-795 nm, encompassing chemiluminescence emissions from OH*, CH*, and predominantly by CO2* species. Further, laser-induced gas breakdown spectra were recorded under various engine operating conditions.

  6. Advanced Natural Gas Reciprocating Engine: Parasitic Loss Control through Surface Modification

    SciTech Connect

    Farshid Sadeghi; Chin-Pei Wang

    2008-12-31

    This report presents results of our investigation on parasitic loss control through surface modification in reciprocating engine. In order to achieve the objectives several experimental and corresponding analytical models were designed and developed to corroborate our results. Four different test rigs were designed and developed to simulate the contact between the piston ring and cylinder liner (PRCL) contact. The Reciprocating Piston Test Rig (RPTR) is a novel suspended liner test apparatus which can be used to accurately measure the friction force and side load at the piston-cylinder interface. A mixed lubrication model for the complete ring-pack and piston skirt was developed to correlate with the experimental measurements. Comparisons between the experimental and analytical results showed good agreement. The results revealed that in the reciprocating engines higher friction occur near TDC and BDC of the stroke due to the extremely low piston speed resulting in boundary lubrication. A Small Engine Dynamometer Test Rig was also designed and developed to enable testing of cylinder liner under motored and fired conditions. Results of this study provide a baseline from which to measure the effect of surface modifications. The Pin on Disk Test Rig (POD) was used in a flat-on-flat configuration to study the friction effect of CNC machining circular pockets and laser micro-dimples. The results show that large and shallow circular pockets resulted in significant friction reduction. Deep circular pockets did not provide much load support. The Reciprocating Liner Test Rig (RLTR) was designed to simplifying the contact at the PRCL interface. Accurate measurement of friction was obtained using 3-axis piezoelectric force transducer. Two fiber optic sensors were used to measure the film thickness precisely. The results show that the friction force is reduced through the use of modified surfaces. The Shear Driven Test Rig (SDTR) was designed to simulate the mechanism of the

  7. Cost-Effective Reciprocating Engine Emissions Control and Monitoring for E&P Field and Gathering Engines

    SciTech Connect

    Kirby S. Chapman; Sarah R. Nuss-Warren

    2007-02-01

    The objective of this project is to identify, develop, test, and commercialize emissions control and monitoring technologies that can be implemented by exploration and production (E&P) operators to significantly lower the cost of environmental compliance and expedite project permitting. The project team takes considerable advantage of the emissions control research and development efforts and practices that have been underway in the gas pipeline industry for the last 12 years. These efforts and practices are expected to closely interface with the E&P industry to develop cost-effective options that apply to widely-used field and gathering engines, and which can be readily commercialized. The project is separated into two phases. Phase 1 work establishes an E&P industry liaison group, develops a frequency distribution of installed E&P field engines, and identifies and assesses commercially available and emerging engine emissions control and monitoring technologies. Current and expected E&P engine emissions and monitoring requirements are reviewed, and priority technologies are identified for further development. The identified promising technologies are tested on a laboratory engine to confirm their generic viability. In addition, a full-scale field test of prototype emissions controls will be conducted on at least ten representative field engine models with challenging emissions profiles. Emissions monitoring systems that are integrated with existing controls packages will be developed. Technology transfer/commercialization is expected to be implemented through compressor fleet leasing operators, engine component suppliers, the industry liaison group, and the Petroleum Technology Transfer Council. This topical report discusses work completed during Phase 1 of the project Cost Effective Reciprocating Engine Emissions Control and Monitoring for E&P Field and Gathering Engines. In this report information, data, and results are compiled and summarized from quarterly

  8. Cost-Effective Reciprocating Engine Emissions Control and Monitoring for E & P Field and Gathering Engines

    SciTech Connect

    Kirby S. Chapman; Sarah R. Nuss-Warren

    2006-09-30

    Continuing work in controlled testing uses a one cylinder Ajax DP-115 (a 13.25 in bore x 16 in stroke, 360 rpm engine) to assess a sequential analysis and evaluation of a series of engine upgrades. As with most of the engines used in the natural gas industry, the Ajax engine is a mature engine with widespread usage throughout the gas gathering industry. The end point is an assessment of these technologies that assigns a cost per unit reduction in NO{sub X} emissions. Technologies including one pre-combustion chamber, in-cylinder sensors, the means to adjust the air-to-fuel ratio, and modification of the air filter housing have been evaluated in previous reports. Current work tests non-production, prototype, mid-pressure fuel valves and begins analysis of these tests. This analysis reveals questions which must be answered before coming to any firm conclusions about the use of the180 psig fuel valve. The research team plans to continue with the remaining pre-combustion chamber tests in the coming quarter. By using the Ajax DP-115 these tests are completed in a low-cost and efficient manner. The various technologies can be quickly exchanged with different hardware, and it is inexpensive to run the engine. Progress in moving toward field testing is discussed, and a change in strategy is suggested. Although field engines are available to test, it is suggested that the final field testing be put on hold due to information from outside publications during this last quarter. Instead, KSU would focus on related field-testing and characterization in an outside project that will close an apparent technology gap. The results of this characterization will give a more solid footing to the field testing that will complete this project.

  9. Engine performance comparison associated with carburetor icing during aviation grade fuel and automotive grade fuel operation. Final report Jan-Jul 82

    SciTech Connect

    Cavage, W.; Newcomb, J.; Biehl, K.

    1983-05-01

    A comprehensive sea-level-static test cell data collection and evaluation effort to review operational characteristics of 'off-the-shelf' carburetor ice detection/warning devices for general aviation piston engine aircraft during operation on aviation grade fuel and automotive grade fuel. Presented herein are results, observations and conclusions drawn from over 250 hours of test cell engine operation on 100LL aviation grade fuel, unleaded premium and unleaded regular grade automotive fuel. Sea-level-static test cell engine operations were conducted utilizing a Teledyne Continental Motors 0-200A engine and a Cessna 150 fuel system to review engine operational characteristics of 100LL aviation grade fuel and various blends of automotive grade fuel as well as carburetor ice detectors/warning devices sensitivity/effectiveness during actual carburetor icing. The primary purpose of test cell engine operation was to observe real-time carburetor icing characteristics associated with possible automotive grade fuel utilization by piston-powered light general aviation aircraft. In fulfillment of this task, baseline engine operations were established with 100LL aviation grade fuel followed by various blend of automotive grade fuel prior to imposing carburetor icing conditions and assessing operational characteristics.

  10. Integrated Combined Heat and Power/Advanced Reciprocating Internal Combustion Engine System for Landfill Gas to Power Applications

    SciTech Connect

    2009-02-01

    Gas Technology Institute will collaborate with Integrated CHP Systems Corporation, West Virginia University, Vronay Engineering Services, KAR Engineering Associates, Pioneer Air Systems, and Energy Concepts Company to recover waste heat from reciprocating engines. The project will integrate waste heat recovery along with gas clean-up technology system improvements. This will address fuel quality issues that have hampered expanded use of opportunity fuels such as landfill gas, digester biogas, and coal mine methane. This will enable increased application of CHP using renewable and domestically derived opportunity fuels.

  11. On use of CO{sub 2} chemiluminescence for combustion metrics in natural gas fired reciprocating engines.

    SciTech Connect

    Gupta, S. B.; Bihari, B.; Biruduganti, M.; Sekar, R.; Zigan, J.

    2011-01-01

    Flame chemiluminescence is widely acknowledged to be an indicator of heat release rate in premixed turbulent flames that are representative of gas turbine combustion. Though heat release rate is an important metric for evaluating combustion strategies in reciprocating engine systems, its correlation with flame chemiluminescence is not well studied. To address this gap an experimental study was carried out in a single-cylinder natural gas fired reciprocating engine that could simulate turbocharged conditions with exhaust gas recirculation. Crank angle resolved spectra (266-795 nm) of flame luminosity were measured for various operational conditions by varying the ignition timing for MBT conditions and by holding the speed at 1800 rpm and Brake Mean effective Pressure (BMEP) at 12 bar. The effect of dilution on CO*{sub 2}chemiluminescence intensities was studied, by varying the global equivalence ratio (0.6-1.0) and by varying the exhaust gas recirculation rate. It was attempted to relate the measured chemiluminescence intensities to thermodynamic metrics of importance to engine research -- in-cylinder bulk gas temperature and heat release rate (HRR) calculated from measured cylinder pressure signals. The peak of the measured CO*{sub 2} chemiluminescence intensities coincided with peak pressures within {+-}2 CAD for all test conditions. For each combustion cycle, the peaks of heat release rate, spectral intensity and temperature occurred in that sequence, well separated temporally. The peak heat release rates preceded the peak chemiluminescent emissions by 3.8-9.5 CAD, whereas the peak temperatures trailed by 5.8-15.6 CAD. Such a temporal separation precludes correlations on a crank-angle resolved basis. However, the peak cycle heat release rates and to a lesser extent the peak cycle temperatures correlated well with the chemiluminescent emission from CO*{sub 2}. Such observations point towards the potential use of flame chemiluminescence to monitor peak bulk gas

  12. Direct fired reciprocating engine and bottoming high temperature fuel cell hybrid

    DOEpatents

    Geisbrecht, Rodney A.; Holcombe, Norman T.

    2006-02-07

    A system of a fuel cell bottoming an internal combustion engine. The engine exhaust gas may be combined in varying degrees with air and fed as input to a fuel cell. Reformer and oxidizers may be combined with heat exchangers to accommodate rich and lean burn conditions in the engine in peaking and base load conditions without producing high concentrations of harmful emissions.

  13. Cost-Effective Reciprocating Engine Emissions Control and Monitoring for E&P Field and Gathering Engines

    SciTech Connect

    Greg Beshouri; Kirby S. Chapman; Jim McCarthy; Sarah R. Nuss-Warren; Mike Whelan

    2006-03-01

    This quarterly report re-evaluates current market objectives in the exploration and production industry, discusses continuing progress in testing that evaluates emission control technologies applied to a two-stroke cycle natural gas-fueled engine, and presents a scheme for enacting remote monitoring and control of engines during upcoming field tests. The examination of current market objectives takes into account technological developments and changing expectations for environmental permitting which may have occurred over the last year. This demonstrates that the continuing work in controlled testing and toward field testing is on track Market pressures currently affecting the gas exploration and production industry are shown to include a push for increased production, as well as an increasing cost for environmental compliance. This cost includes the direct cost of adding control technologies to field engines as well as the indirect cost of difficulty obtaining permits. Environmental regulations continue to require lower emissions targets, and some groups of engines which had not previously been regulated will be required to obtain permits in the future. While the focus remains on NOx and CO, some permits require reporting of additional emissions chemicals. Continuing work in controlled testing uses a one cylinder Ajax DP-115 (a 13.25 in bore x 16 in stroke, 360 rpm engine) to assess a sequential analysis and evaluation of a series of engine upgrades. As with most of the engines used in the natural gas industry, the Ajax engine is a mature engine with widespread usage throughout the gas gathering industry. The end point is an assessment of these technologies that assigns a cost per unit reduction in NOx emissions. Technologies including one pre-combustion chamber, in-cylinder sensors, the means to adjust the air-to-fuel ratio, and modification of the air filter housing have been evaluated in previous reports. Current work focuses on final preparations for testing

  14. Integrated Advanced Reciprocating Internal Combustion Engine System for Increased Utilization of Gaseous Opportunity Fuels

    SciTech Connect

    Pratapas, John; Zelepouga, Serguei; Gnatenko, Vitaliy; Saveliev, Alexei; Jangale, Vilas; Li, Hailin; Getz, Timothy; Mather, Daniel

    2013-08-31

    The project is addressing barriers to or opportunities for increasing distributed generation (DG)/combined heat and power (CHP) use in industrial applications using renewable/opportunity fuels. This project brings together novel gas quality sensor (GQS) technology with engine management for opportunity fuels such as landfill gas, digester gas and coal bed methane. By providing the capability for near real-time monitoring of the composition of these opportunity fuels, the GQS output can be used to improve the performance, increase efficiency, raise system reliability, and provide improved project economics and reduced emissions for engines used in distributed generation and combined heat and power.

  15. Performance, Efficiency, and Emissions Characterization of Reciprocating Internal Combustion Engines Fueled with Hydrogen/Natural Gas Blends

    SciTech Connect

    Kirby S. Chapman; Amar Patil

    2007-06-30

    in a reciprocating four stroke cycle engine. The test matrix varied engine load and air-to-fuel ratio at throttle openings of 50% and 100% at equivalence ratios of 1.00 and 0.90 for hydrogen percentages of 10%, 20% and 30% by volume. In addition, tests were performed at 100% throttle opening, with an equivalence ratio of 0.98 and a hydrogen blend of 20% to further investigate CO emission variations. Data analysis indicated that the use of hydrogen/natural gas fuel blend penalizes the engine operation with a 1.5 to 2.0% decrease in torque, but provided up to a 36% reduction in CO, a 30% reduction in NOX, and a 5% increase in brake thermal efficiency. These results concur with previous results published in the open literature. Further reduction in emissions can be obtained by retarding the ignition timing.

  16. Cost-Effective Reciprocating Engine Emissions Control and Monitoring for E&P Field and Gathering Engines

    SciTech Connect

    Kirby S. Chapman; Allen J. Adriani

    2004-01-01

    For the period of the 8th reporting period high-impact control technologies were identified during the meeting at Cooper in Oklahoma City. The technologies that were identified will be tested on the Ajax DP-115 engine and are capable of being widely utilized by the E&P industry. Two major areas where engine controls and ignition systems, but still included were other alternatives to reduce emissions. The most exhilarating item for this quarter was when Ajax engine was delivered to the test bed at the NGML.

  17. Cost-Effective Reciprocating Engine Emissions Control and Monitoring for E&P Field and Gathering Engines

    SciTech Connect

    Kirby S. Chapman

    2004-01-01

    During the fourth reporting period, the project team investigated the Non-Selective Catalytic Reduction technologies that are in use on rich-burn four-stroke cycle engines. Several engines were instrumented and data collected to obtain a rich set of engine emissions and performance data. During the data collection, the performance of the catalyst under a variety of operating conditions was measured. This information will be necessary to specify a set of sensors that can then be used to reliably implement NSCRs as plausible technologies to reduce NOx emissions for four-stroke cycle engines used in the E&P industry. A complete summary all the technologies investigated to data is included in the report. For each technology, the summary includes a description of the process, the emission reduction that is to be expected, information on the cost of the technology, development status, practical considerations, compatibility with other air pollutant control technologies, and any references used to obtain the information.

  18. Cost-Effective Reciprocating Engine Emissions Control and Monitoring for E&P Field and Gathering Engines

    SciTech Connect

    Kirby S. Chapman; Sarah R. Nuss-Warren

    2006-07-01

    Continuing work in controlled testing uses a one cylinder Ajax DP-115 (a 13.25 in bore x 16 in stroke, 360 rpm engine) to assess a sequential analysis and evaluation of a series of engine upgrades. As with most of the engines used in the natural gas industry, the Ajax engine is a mature engine with widespread usage throughout the gas gathering industry. The end point is an assessment of these technologies that assigns a cost per unit reduction in NOX emissions. Technologies including one pre-combustion chamber, in-cylinder sensors, the means to adjust the air-to-fuel ratio, and modification of the air filter housing have been evaluated in previous reports. Current work focuses on final preparations for testing pre-combustion chambers with different characteristics and using mid-to-high-pressure fuel valves and initial runs of these tests. By using the Ajax DP-115 these tests are completed in a low-cost and efficient manner. The various technologies can be quickly exchanged with different hardware, and it is inexpensive to run the engine. Progress in moving toward field testing is discussed, and changes to the first planned field test are presented. Although changes have been made to the previous plan, it is expected that several new sites will be selected soon. Field tests will begin in the next quarter.

  19. Cost-Effective Reciprocating Engine Emissions Control and Monitoring for E&P Field and Gathering Engines

    SciTech Connect

    Kirby S. Chapman

    2005-10-01

    This quarterly report discusses the results from a testing phase of the project that evaluates emission control technologies applied to a two-stroke cycle natural gas-fueled engine. In this phase, a one cylinder Ajax DP-115 (a 13.25 in bore x 16 in stroke, 360 rpm engine) is used to assess a sequential analysis and evaluation of a series of engine upgrades. As with most of the engines used in the natural gas industry, the Ajax engine is a mature engine with widespread usage throughout gas gathering industry. The end point is an assessment of these technologies that assigns a cost per unit reduction in NO{sub x} emissions. This report describes potential emission reduction technologies followed by a battery of tests that demonstrate synergies between some of the more promising technologies. While the end-goal is a closed loop control, low cost NO{sub x} retrofit package, additional work remains. The battery of tests include pre-combustion chambers, in-cylinder sensors, the means to adjust the air-to-fuel ratio, and modification of the air filter housing. During several phases of the tests, the ignition timing also was varied to determine the optimal point for ignition timing. The results from these tests suggest that an optimum exists where fuel consumption is minimized along with NO{sub x} emissions. By using the Ajax DP-115 these tests are completed in a low-cost and efficient manner. The various technologies can be quickly exchanged with different hardware, and the cost to operate the engine is very inexpensive.

  20. Cost-Effective Reciprocating Engine Emissions Control and Monitoring for E&P Field and Gathering Engines

    SciTech Connect

    Kirby S. Chapman; Sarah R. Nuss-Warren

    2006-12-31

    This report highlights work done on a project intended to lower the cost of environmental compliance and expedite project permitting for Exploration and Production (E&P) operators by identifying, developing, testing, and commercializing emissions control and monitoring technologies. Promising technologies have already been identified and developed. Current work focuses on testing these promising technologies. Specifically, several technologies are being tested in the laboratory for application to lean-burn engines or fully characterized on-site for use with rich-burn engines. Upon completion of these tests, the most cost-effective and robust technologies will be tested in the field and commercialization will ensue. During this quarter, progress in laboratory testing for lean-burn engines was limited by maintenance issues on the KSU Ajax DP-115. The difficulties that required maintenance to be performed will likely require that the 180 psig prototype valve be tested in the future, if possible. The maintenance was performed, and it is expected that the Ajax will be available for testing in the coming quarter. Although laboratory testing was slowed as a result of maintenance issues, progress in experimental characterization of technologies has been significant. NSCR systems will be characterized as applied to rich-burn engines on-site. This characterization will ensure high-quality data in final field testing on rich-burn engines and is considered to be essential, despite that the work requires the delay of official field testing until 2008. Many preliminary and administrative tasks have been completed, including initial site selection, official proposal submittal, and beginning a process to approve necessary changes to installed field engines.

  1. Application of Hydrogen Assisted Lean Operation to Natural Gas-Fueled Reciprocating Engines (HALO)

    SciTech Connect

    Chad Smutzer

    2006-01-01

    Two key challenges facing Natural Gas Engines used for cogeneration purposes are spark plug life and high NOx emissions. Using Hydrogen Assisted Lean Operation (HALO), these two keys issues are simultaneously addressed. HALO operation, as demonstrated in this project, allows stable engine operation to be achieved at ultra-lean (relative air/fuel ratios of 2) conditions, which virtually eliminates NOx production. NOx values of 10 ppm (0.07 g/bhp-hr NO) for 8% (LHV H2/LHV CH4) supplementation at an exhaust O2 level of 10% were demonstrated, which is a 98% NOx emissions reduction compared to the leanest unsupplemented operating condition. Spark ignition energy reduction (which will increase ignition system life) was carried out at an oxygen level of 9%, leading to a NOx emission level of 28 ppm (0.13 g/bhp-hr NO). The spark ignition energy reduction testing found that spark energy could be reduced 22% (from 151 mJ supplied to the coil) with 13% (LHV H2/LHV CH4) hydrogen supplementation, and even further reduced 27% with 17% hydrogen supplementation, with no reportable effect on NOx emissions for these conditions and with stable engine torque output. Another important result is that the combustion duration was shown to be only a function of hydrogen supplementation, not a function of ignition energy (until the ignitability limit was reached). The next logical step leading from these promising results is to see how much the spark energy reduction translates into increase in spark plug life, which may be accomplished by durability testing.

  2. INTERNATIONAL UNION OF OPERATING ENGINEERS NATIONAL HAZMAT PROGRAM - DEWALT RECIPROCATING SAW OENHP{number_sign}: 2001-01, VERSION A

    SciTech Connect

    Unknown

    2002-01-31

    Florida International University's (FIU) Hemispheric Center for Environmental Technology (HCET) evaluated five saws for their effectiveness in cutting specially prepared fiberglass-reinforced plywood crates. These crates were built as surrogates for crates that presently hold radioactively contaminated glove boxes at the Department of Energy's (DOE) Los Alamos facility. The DeWalt reciprocating saw was assessed on August 13, 2001. During the FIU test of efficacy, a team from the Operating Engineers National Hazmat Program (OENHP) evaluated the occupational safety and health issues associated with this technology. The DeWalt reciprocating saw is a hand-held industrial tool used for cutting numerous materials, including wood and various types of metals depending upon the chosen blade. Its design allows for cutting close to floors, corners, and other difficult areas. An adjustable shoe sets the cut at three separate depths. During the demonstration for the dismantling of the fiberglass-reinforced plywood crate, the saw was used for extended continuous cutting, over a period of approximately two hours. The dismantling operation involved vertical and horizontal cuts, saw blade changes, and material handling. During this process, operators experienced vibration to the hand and arm in addition to a temperature rise on the handgrip. The blade of the saw is partially exposed during handling and fully exposed during blade changes. Administrative controls, such as duty time of the operators and the machine, operator training, and personal protective equipment (PPE), such as gloves, should be considered when using the saw in this application. Personal noise sampling indicated that both workers were exposed to noise levels exceeding the Occupational Safety and Health Administration's (OSHA) Action Level of 85 decibels (dBA) with time-weighted averages (TWA's) of 88.3 and 90.6 dBA. Normally, a worker would be placed in a hearing conservation program if his TWA was greater than

  3. Cost-Effective Reciprocating Engine Emissions Control and Monitoring for E&P Field and Gathering Engines

    SciTech Connect

    Keith Hohn; Sarah R. Nuss-Warren

    2011-08-31

    This final report describes a project intended to identify, develop, test, and commercialize emissions control and monitoring technologies that can be implemented by E&P operators to significantly lower their cost of environmental compliance and expedite project permitting. Technologies were installed and tested in controlled laboratory situations and then installed and tested on field engines based on the recommendations of an industry-based steering committee, analysis of installed horsepower, analysis of available emissions control and monitoring technologies, and review of technology and market gaps. The industry-recognized solution for lean-burn engines, a low-emissions-retrofit including increased airflow and pre-combustion chambers, was found to successfully control engine emissions of oxides of nitrogen (NO{sub X}) and carbon monoxide (CO). However, the standard non-selective catalytic reduction (NSCR) system recognized by the industry was found to be unable to consistently control both NO{sub X} and CO emissions. The standard NSCR system was observed to produce emissions levels that changed dramatically on a day-to-day or even hour-to-hour basis. Because difficulties with this system seemed to be the result of exhaust gas oxygen (EGO) sensors that produced identical output for very different exhaust gas conditions, models were developed to describe the behavior of the EGO sensor and an alternative, the universal exhaust gas oxygen (UEGO) sensor. Meanwhile, an integrated NSCR system using an advanced, signal-conditioned UEGO sensor was tested and found to control both NO{sub X} and CO emissions. In conjunction with this project, advanced monitoring technologies, such as Ion Sense, and improved sensors for emissions control, such as the AFM1000+ have been developed and commercialized.

  4. Training Reciprocity Achieves Greater Consistency, Saves Time...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    The reciprocity program allowed the engineers to bypass a three-day Radiological Worker Program at SNL nearly identical to training they recently completed at ICP. In addition, ...

  5. Electromagnetic Reciprocity.

    SciTech Connect

    Aldridge, David F.

    2014-11-01

    A reciprocity theorem is an explicit mathematical relationship between two different wavefields that can exist within the same space - time configuration. Reciprocity theorems provi de the theoretical underpinning for mod ern full waveform inversion solutions, and also suggest practical strategies for speed ing up large - scale numerical modeling of geophysical datasets . In the present work, several previously - developed electromagnetic r eciprocity theorems are generalized to accommodate a broader range of medi um, source , and receiver types. Reciprocity relations enabling the interchange of various types of point sources and point receivers within a three - dimensional electromagnetic model are derived. Two numerical modeling algorithms in current use are successfully tested for adherence to reciprocity. Finally, the reciprocity theorem forms the point of departure for a lengthy derivation of electromagnetic Frechet derivatives. These mathe matical objects quantify the sensitivity of geophysical electromagnetic data to variatio ns in medium parameters, and thus constitute indispensable tools for solution of the full waveform inverse problem. ACKNOWLEDGEMENTS Sandia National Labor atories is a multi - program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the US Department of Energy's National Nuclear Security Administration under contract DE - AC04 - 94AL85000. Signif icant portions of the work reported herein were conducted under a Cooperative Research and Development Agreement (CRADA) between Sandia National Laboratories (SNL) and CARBO Ceramics Incorporated. The author acknowledges Mr. Chad Cannan and Mr. Terry Pa lisch of CARBO Ceramics, and Ms. Amy Halloran, manager of SNL's Geophysics and Atmospheric Sciences Department, for their interest in and encouragement of this work. Special thanks are due to Dr . Lewis C. Bartel ( recently retired from Sandia National Labo ratories and now a

  6. Alternative Aviation Fuel Workshop | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Alternative Aviation Fuel Workshop Alternative Aviation Fuel Workshop September 14, 2016 8:00AM EDT to September 15, 2016 1:00PM EDT Macon Marriott City Center 240 Coliseum Drive, Macon, GA 31217801 The aviation industry faces significant challenges to maintain growth while enhancing environmental sustainability. Alternative energy systems such as batteries, fuel cells, and natural gas are options for on-road, off-road, and marine engine applications, but these alternative fuels are not yet

  7. Influence of autoignition delay time characteristics of different fuels on pressure waves and knock in reciprocating engines

    SciTech Connect

    Bradley, D.; Kalghatgi, G.T.

    2009-12-15

    The functional relationship of autoignition delay time with temperature and pressure is employed to derive the propagation velocities of autoignitive reaction fronts for particular reactivity gradients, once autoignition has been initiated. In the present study of a variety of premixtures, with different functional relationships, such gradients comprise fixed initial temperature gradients. The smaller is the ratio of the acoustic speed through the mixture to the localised velocity of the autoignitive front, the greater are the amplitude and frequency of the induced pressure wave. This might lead to damaging engine knock. At higher values of the ratio, the autoignition can be benign with only small over-pressures. This approach to the effects of autoignition is confirmed by its application to a variety of experimental studies involving: (i)Imposed temperature gradients in a rapid compression and expansion machine. (ii)Onset of knock in an engine with advancing spark timing. (iii)Development of autoignition at a single hot spot in an engine. (iv)Autoignition fronts initiated by several hot spots. There is much diversity in the effects that can be produced by different fuels in different ranges of temperature and pressure. Higher values of autoignitive propagation speeds lead to increasingly severe engine knock. Such effects cannot always be predicted from the Research and Motor octane numbers. (author)

  8. Aviation Management and Safety

    Directives, Delegations, and Other Requirements [Office of Management (MA)]

    2002-11-27

    This directive establishes the framework for an efficient, effective, secure, and safe aviation program in the DOE and its contractor operations. Cancels DOE O 440.2A, Aviation, dated 3-8-02.

  9. Aviation Management and Safety

    Directives, Delegations, and Other Requirements [Office of Management (MA)]

    2002-11-27

    To establish the framework for an efficient, effective, secure, and safe aviation program in the Department of Energy (DOE) and its contractor aviation operations. Cancels DOE O 440.2A. Canceled by DOE O 440.2C.

  10. Aviation Management and Safety

    Directives, Delegations, and Other Requirements [Office of Management (MA)]

    2002-03-02

    To establish the framework for an efficient, effective, secure, and safe aviation program in the Department of Energy (DOE) and its contractor aviation operations. Cancels DOE O 440.2. Canceled by DOE O 440.2B.

  11. Integrated Combined Heat and Power/Advanced Reciprocating Internal...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Combined Heat and PowerAdvanced Reciprocating Internal Combustion Engine System for Landfill Gas to Power Applications Development of an Improved Modular Landfill Gas Cleanup and...

  12. Demonstration of alcohol as an aviation fuel

    SciTech Connect

    1996-07-01

    A recently funded Southeastern Regional Biomass Energy Program (SERBEP) project with Baylor University will demonstrate the effectiveness of ethanols as an aviation fuel while providing several environmental and economic benefits. Part of this concern is caused by the petroleum industry. The basis for the petroleum industry to find an alternative aviation fuel will be dictated mainly by economic considerations. Three other facts compound the problem. First is the disposal of oil used in engines burning leaded fuel. This oil will contain too much lead to be burned in incinerators and will have to be treated as a toxic waste with relatively high disposal fees. Second, as a result of a greater demand for alkalites to be used in the automotive reformulated fuel, the costs of these components are likely to increase. Third, the Montreal Protocol will ban in 1998 the use of Ethyl-Di-Bromide, a lead scavenger used in leaded aviation fuel. Without a lead scavenger, leaded fuels cannot be used. The search for alternatives to leaded aviation fuels has been underway by different organizations for some time. As part of the search for alternatives, the Renewable Aviation Fuels Development Center (RAFDC) at Baylor University in Waco, Texas, has received a grant from the Federal Aviation Administration (FAA) to improve the efficiencies of ethanol powered aircraft engines and to test other non-petroleum alternatives to aviation fuel.

  13. A case for biofuels in aviation

    SciTech Connect

    1996-12-31

    In the last 15 years, the technical and the economic feasibility of biomass based fuels for general aviation piston engines has been proven. Exhaustive ground and flight tests performed at the Renewable Aviation Fuels Development Center (RAFDC) using ethanol, ethanol/methanol blends, and ETBE have proven these fuels to be superior to aviation gasoline (avgas) in all aspects of performance except range. Two series of Lycoming engines have been certified. Record flights, including a transatlantic flight on pure ethanol, were made to demonstrate the reliability of the fuel. Aerobatic demonstrations with aircraft powered by ethanol, ethanol/methanol, and ETBE were flown at major airshows around the world. the use of bio-based fuels for aviation will benefit energy security, improve the balance of trade, domestic economy, and environmental quality. The United States has the resources to supply the aviation community`s needs with a domestically produced fuel using current available technology. The adoption of a renewable fuel in place of conventional petroleum-based fuels for aviation piston and turbine engines is long overdue.

  14. Reciprocating pellet press

    DOEpatents

    Jones, Charles W.

    1981-04-07

    A machine for pressing loose powder into pellets using a series of reciprocating motions has an interchangeable punch and die as its only accurately machines parts. The machine reciprocates horizontally between powder receiving and pressing positions. It reciprocates vertically to press, strip and release a pellet.

  15. Federal Aviation Administration | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Aviation Administration Jump to: navigation, search Logo: Federal Aviation Administration Name: Federal Aviation Administration Address: 800 Independence Ave., SW Place:...

  16. Aviation Management and Safety

    Directives, Delegations, and Other Requirements [Office of Management (MA)]

    2011-06-15

    To establish a policy framework that will ensure safety, efficiency and effectiveness of government or contractor aviation operations. Supersedes DOE O 440.2B.

  17. Aviation Management and Safety

    Directives, Delegations, and Other Requirements [Office of Management (MA)]

    2011-06-15

    To establish a policy framework that will ensure safety, efficiency and effectiveness of government or contractor aviation operations. Cancels DOE O 440.2B.

  18. Advanced Reciprocating Engine System (ARES)

    Energy.gov [DOE] (indexed site)

    ... Oak Ridge is employing additive manufacturing (AM) for CHP systems, improving ... Projects include: development of novel heat exchangers with AM, rapid prototyping of high ...

  19. Wankel rotary engine development status and research needs

    SciTech Connect

    Martin, M.K.

    1982-11-01

    This report summarizes the status of Wankel rotary engine technology, particularly as applicable to highway vehicles. The Wankel engine was invented over 25 years ago, and has undergone continual evolutionary design refinement. The engine's perceived advantages of less weight, volume, and complexity than reciprocating engines sparked keen interest, and Wankel-powered automobiles have now been in production for almost 20 years. However, in the early 1970s interest in the Wankel engine greatly subsided because of two problems with the engine at that time: poor fuel economy and high hydrocarbon emissions. The bulk of current Wankel engine development work applicable to highway vehicles is being conducted by Toyo Kogyo (TK) and Curtiss-Wright (C-W). TK has manufactured over 1.2 million rotary engines to date, and markets them in the Mazda Luce and Cosmo in Japan and the Mazda RX-7 worldwide. State-of-the-art production rotary-powered vehicles from TK now exhibit fuel economy which appears to be competitive with many equal-performance, reciprocating-engine vehicles. C-W is focusing its efforts on direct-injection, stratified-charge designs for military and aircraft applications. The company is developing a 750-hp dual-rotor engine for the US Marine Corps, and has completed a design study for a 320-hp general aviation engine. Based on typical reciprocating engines of 1975 to 1977 vintage, and with final drive ratios adjusted to give roughly equal vehicle performance, calculated Environmental Protection Agency (EPA) city fuel economy with the C-W rotary averages 25% higher than with the reciprocating engine. The highway gain is 13%. Use of diesel fuel or a middle distillate instead of gasoline allows an additional 11% gain to be projected on a per-gallon basis. In addition, further gains of 14 to 38% are projected to result from use of a smaller turbocharged version of the engine.

  20. Aviation turbine fuels, 1980

    SciTech Connect

    Shelton, E M

    1981-03-01

    Properties of some aviation turbine fuels marketed in the United States during 1980 are presented in this report. The samples represented are typical 1980 production and were analyzed in the laboratories of 17 manufacturers of aviation turbine (jet) fuels. The data were submitted for study, calculation, and compilation under a cooperative agreement between the Department of Energy (DOE), Bartlesville Energy Technology Center (BETC), Bartlesville, Oklahoma, and the American Petroleum Institute (API). Results for the properties of 98 samples of aviation turbine fuels are included in the report for military grades JP-4 and JP-5 and commercial type Jet A.

  1. Aviation Workshop Agenda

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    ALL TOPICS AND TIMES ARE TENTATIVE AND SUBJECT TO CHANGE ALTERNATIVE AVIATION FUEL WORKSHOP U.S. Department of Energy, Bioenergy Technologies Office September 14-15, 2016  Macon, Georgia Wednesday September 14, 2016 Time Agenda Item = Auditorium = Breakout Rooms 7:30 a.m.-8:00 a.m. Registration and Coffee (Conference Center) 8:00 a.m.-8:20 a.m. Welcome and Opening Remarks, Bioenergy Technologies Office (BETO)  Jonathan Male, Director: BETO Overview  Zia Haq: Importance of Aviation

  2. PNNL Aviation Biofuels

    SciTech Connect

    Plaza, John; Holladay, John; Hallen, Rich

    2014-10-23

    Commercial airplanes really don’t have the option to move away from liquid fuels. Because of this, biofuels present an opportunity to create new clean energy jobs by developing technologies that deliver stable, long term fuel options. The Department of Energy’s Pacific Northwest National Laboratory is working with industrial partners on processes to convert biomass to aviation fuels.

  3. Aviation Fuels | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Demonstration & Market Transformation » Aviation Fuels Aviation Fuels A Navy plane in flight. The Bioenergy Technologies Office (BETO) sees the potential for biofuels produced for the aviation industry to help enable the growth of an advanced bioeconomy. Drop-in jet fuel replacements remain the only true alternative for the commercial aviation industry and the military, both facing ambitious near-term greenhouse gas reduction targets. BETO has been working with national labs, industry

  4. Aviation Management | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Management » Aviation Management Aviation Management The Department of Energy, Aviation Program is the management function for all fleet aircraft and contracted aviation services for the Department. The program and its management personnel operate world-wide. To take advantage of the best communications and information services available, we have chosen the Net as one of our mainstays. The services provided from this page are designed to support our operating personnel. Except for our licensed

  5. Memorandum, Health and Safety Training Reciprocity Program -...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Health and Safety Training Reciprocity Program - July 12, 2013 Memorandum, Health and Safety Training Reciprocity Program - July 12, 2013 July 12, 2013 The HSS reciprocity program ...

  6. DOE Training Reciprocity Program | Department of Energy

    Office of Environmental Management (EM)

    Training Reciprocity Program DOE Training Reciprocity Program June 16, 2015 Presenter: Ted Giltz (MSA)Evan Dunne (NTC) Topics Covered: Reciprocity program goals Collaboration S&H ...

  7. Lean-Burn Stationary Natural Gas Reciprocating Engine Operation with a Prototype Miniature Diode Side Pumped Passively Q-switched Laser Spark Plug

    SciTech Connect

    McIntyre, D.L.; Woodruff, S.D.; McMillian, M.H.; Richardson, S.W.; Gautam, Mridul

    2008-04-01

    To meet the ignition system needs of large bore lean burn stationary natural gas engines a laser diode side pumped passively Q-switched laser igniter was developed and used to ignite lean mixtures in a single cylinder research engine. The laser design was produced from previous work. The in-cylinder conditions and exhaust emissions produced by the miniaturized laser were compared to that produced by a laboratory scale commercial laser system used in prior engine testing. The miniaturized laser design as well as the combustion and emissions data for both laser systems was compared and discussed. It was determined that the two laser systems produced virtually identical combustion and emissions data.

  8. Alternative Aviation Fuel Workshop Presentations

    Office of Energy Efficiency and Renewable Energy (EERE)

    Presentations from the Alternative Aviation Fuel Workshop, hosted by the U.S. Department of Energy's Bioenergy Technologies Office on September 14–15, 2016.

  9. aviation | National Nuclear Security Administration

    National Nuclear Security Administration (NNSA)

    aviation | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy...

  10. FAQS Reference Guide- Aviation Manager

    Energy.gov [DOE]

    This reference guide addresses the competency statements in the January 2010 edition of DOE-STD-1164-2003 Chg 1, Aviation Safety Officer Functional Area Qualification Standard.

  11. Multicylinder compound engine

    SciTech Connect

    Paul, M.A.; Paul, A.

    1990-10-23

    This patent describes a compound, rotary-reciprocal engine. It comprises: a two-cycle reciprocator having cylinders, each cylinder having at least one piston arranged for reciprocation in the cylinder in a cycled operation with a timed air input to the cylinder and a timed exhaust from the cylinder; a compressed air intake and combustion gas exit in each cylinder of the reciprocator; fuel injection means for injecting fuel into the cylinders at appropriate times in the cycled operation; and, a rotocharger.

  12. Patricia Hagerty, Aviation Program Analyst - Bio | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Patricia Hagerty, Aviation Program Analyst - Bio HagertyPatPersonalProfile.pdf (10.55 KB) More Documents & Publications Ferrin Moore, Senior Aviation Policy Officer - Bio ...

  13. Baylor University - Renewable Aviation Fuels Development Center...

    OpenEI (Open Energy Information) [EERE & EIA]

    University - Renewable Aviation Fuels Development Center Jump to: navigation, search Name: Baylor University - Renewable Aviation Fuels Development Center Address: One Bear Place...

  14. Certification of alternative aviation fuels and blend components

    SciTech Connect

    Wilson III, George R. ); Edwards, Tim; Corporan, Edwin ); Freerks, Robert L. )

    2013-01-15

    Aviation turbine engine fuel specifications are governed by ASTM International, formerly known as the American Society for Testing and Materials (ASTM) International, and the British Ministry of Defence (MOD). ASTM D1655 Standard Specification for Aviation Turbine Fuels and MOD Defence Standard 91-91 are the guiding specifications for this fuel throughout most of the world. Both of these documents rely heavily on the vast amount of experience in production and use of turbine engine fuels from conventional sources, such as crude oil, natural gas condensates, heavy oil, shale oil, and oil sands. Turbine engine fuel derived from these resources and meeting the above specifications has properties that are generally considered acceptable for fuels to be used in turbine engines. Alternative and synthetic fuel components are approved for use to blend with conventional turbine engine fuels after considerable testing. ASTM has established a specification for fuels containing synthesized hydrocarbons under D7566, and the MOD has included additional requirements for fuels containing synthetic components under Annex D of DS91-91. New turbine engine fuel additives and blend components need to be evaluated using ASTM D4054, Standard Practice for Qualification and Approval of New Aviation Turbine Fuels and Fuel Additives. This paper discusses these specifications and testing requirements in light of recent literature claiming that some biomass-derived blend components, which have been used to blend in conventional aviation fuel, meet the requirements for aviation turbine fuels as specified by ASTM and the MOD. The 'Table 1' requirements listed in both D1655 and DS91-91 are predicated on the assumption that the feedstocks used to make fuels meeting these requirements are from approved sources. Recent papers have implied that commercial jet fuel can be blended with renewable components that are not hydrocarbons (such as fatty acid methyl esters). These are not allowed blend

  15. E-Alerts: Energy (engine studies (energy related)). E-mail newsletter

    SciTech Connect

    1999-04-01

    Operation and design of engines when related to energy conservation and energy use. Covers turbine, rotary, and reciprocating engines.

  16. Patricia Hagerty, Aviation Program Analyst

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    United States. Pat has two bachelor's degrees from the University of Montana; she is a certified general aviation private pilot and a Vietnam Era Veteran of the U.S. Coast Guard.

  17. Aviation Manager | National Nuclear Security Administration | (NNSA)

    National Nuclear Security Administration (NNSA)

    Aviation Manager Joseph Ginanni Joseph Ginanni July 2009 U.S. General Services Administration (GSA) Federal Aviation Professional Award Aviation Manager Joseph Ginanni has received the U.S. General Services Administration (GSA) Federal Aviation Professional Award. Ginanni oversees the Aviation Services Department of the NNSA/NSO Remote Sensing Laboratory at Nellis and Andrews Air Force Bases. The program provides aerial support to the NNSA Office of Emergency Response, which protects people from

  18. Advanced Natural Gas Reciprocating Engines (ARES)

    Office of Environmental Management (EM)

    Algorithms Analytical Tools Development In Cylinder Computational Fluid Dynamics Advanced Cycle Simulation 4 Transition and Deployment ARES technology ...

  19. Reciprocating Engines in Support of Grid Modernization

    Energy.gov [DOE] (indexed site)

    Non-Spin Reserves >500kW, 10 min to ramp, 30 min commitment Yes Ramping Reserves Award based on 5-min ramp capability Yes Demand Response >500kW, full capacity in 40 min, duration ...

  20. DOE Federal Aviation Professional Awards | Department of Energy

    Energy Saver

    DOE Federal Aviation Professional Awards DOE Federal Aviation Professional Awards PDF icon DOE Federal Aviation Professional Awards More Documents & Publications DOE Federal...

  1. Ferrin Moore, Senior Aviation Policy Officer

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Ferrin Moore Title: Senior Aviation Policy Officer Organization: Office of Aviation ... D.C. 20585 E-mail Address: Ferrin.Moore@hq.doe.gov Phone Number: Office: (202) ...

  2. Oregon Department of Aviation | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Aviation Jump to: navigation, search Name: Oregon Department of Aviation Abbreviation: ODA Address: 3040 25th St. SE Place: Salem, Oregon Zip: 97302 Phone Number: 503-378-4880...

  3. Low Carbon Aviation Committee Meeting

    Energy.gov [DOE]

    The first committee meeting of the Propulsion and Energy Systems to Reduce Commercial Aviation Carbon Emissions Project will be held on June 2–3, 2015 at the National Academy of Sciences. BETO Director Jonathan Male will be speaking on a Department of Energy panel at the meeting, and Lead Analyst Zia Haq will be in attendance.

  4. Launching Renewable Aviation Fuels | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Launching Renewable Aviation Fuels Launching Renewable Aviation Fuels Breakout Session 1D: Launching Renewable Aviation Fuels Launching Renewable Aviation Fuels Chris Tindal, Director for Operational Energy, U.S. Navy tindal_bioenergy_2016.pdf (1.7 MB) More Documents & Publications US Navy Tactical Fuels From Renewable Sources Program U.S. Department of the Navy: Driving Alternative Fuels Adoption Department of the Navy Bioeconomy Activity

  5. Aviation Management Professional Award Nomination for:

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Professional Nomination for Managerial/Official Award: Joseph M. Ginanni Aviation Manager US Department of Energy/National Nuclear Security Administration, Nevada Site Office Bio Joseph M. Ginanni Aviation Manager National Nuclear Security Administration Nevada Site Office Mr. Ginanni has worked for the Nevada Site Office (NSO) since 1991. For the past five years, he has served as the NSO Aviation Manager, managing and overseeing the Management and Operating contractor's aviation services

  6. Implementation of alternative bio-based fuels in aviation: The Clean Airports Program

    SciTech Connect

    Shauck, M.E.; Zanin, M.G.

    1997-12-31

    The Renewable Aviation Fuels Development Center at Baylor University in Waco, Texas, was designated, in March 1996, by the US Department of Energy (US DOE) as the national coordinator of the Clean Airports Program. This program, a spin-off of the Clean Cities Program, was initiated to increase the use of alternative fuels in aviation. There are two major fuels used in aviation today, the current piston engine aviation gasoline, and the current turbine engine fuel. The environmental impact of each of these fuels is significant. Aviation Gasoline (100LL), currently used in the General Aviation piston engine fleet, contributes 100% of the emissions containing lead in the USA today. In the case of the turbine engine fuel (Jet fuel), there are two major environmental impacts to be considered: the local, in the vicinity of the airports, and the global impact on climate change. The Clean Airports Program was established to promote the use of clean burning fuels in order to achieve and maintain clean air at and in the vicinities of airports through the use of alternative fuel-powered air and ground transportation vehicles.

  7. Hydraulic analysis of reciprocating pumps

    SciTech Connect

    Miller, J.D.; Miller, .E. [White Rock Engineering, Inc., Dallas, TX (United States)

    1994-12-31

    A general discussion is given of the factors affecting reciprocating pump hydraulics and methods of reducing the magnitude of the hydraulic pressure disturbances on the pump and the system. Pump type, speed, design, pump valves, suction conditions, and fluid being pumped affect volumetric efficiency and magnitude of hydraulic pressure disturbances. Total Cylinder Pressure (TCP) as a method of specifying minimum suction operating pressure versus Net Positive Suction Head required (NPSHR) is discussed. Diagnostic method of analyzing reciprocating pump performance is presented along with methods of controlling the hydraulic pressure disturbances with pulsation control devices. A review of types of pump pulsation dampeners is presented.

  8. Aviation security: A system's perspective

    SciTech Connect

    Martin, J.P.

    1988-01-01

    For many years the aviation industry and airports operated with security methods and equipment common to most other large industrial complexes. At that time, the security systems primarily provided asset and property protection. However, soon after the first aircraft hijacking the focus of security shifted to emphasize the security requirements necessary for protecting the traveling public and the one feature of the aviation industry that makes it unique---the airplane. The airplane and its operation offered attractive opportunities for the homesick refugee, the mentally unstable person and the terrorist wanting to make a political statement. The airport and its aircraft were the prime targets requiring enhanced security against this escalated threat. In response, the FAA, airport operators and air carriers began to develop plans for increasing security and assigning responsibilities for implementation.

  9. Health and Safety Training Reciprocity

    Directives, Delegations, and Other Requirements [Office of Management (MA)]

    2014-04-14

    Establishes a policy for reciprocity of employee health and safety training among DOE entities responsible for employee health and safety at DOE sites and facilities to increase efficiency and effectiveness of Departmental operations while meeting established health and safety requirements. Does not cancel other directives.

  10. Aviation Technology | GE Global Research

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Read More Ceramic Matrix Composites Improve Engine Efficiency Ceramic matrix composites (CMCs) are a breakthrough materials technology for jet engines that started at our Global ...

  11. Bioenergy Technologies Office Hosts Alternative Aviation Fuel...

    Energy Saver

    Related Articles Bioenergy Technologies Office Hosts Alternative Aviation Fuel Workshop Algal Biology Toolbox Workshop Brings Lead Experts to Inform Algae-Based Biofuel Strategy ...

  12. Aviation Management Professional Award Nomination for: | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Energy Aviation Management Professional Award Nomination for: Aviation Management Professional Award Nomination for: Aviation Management Professional Award Nomination for: (43.97 KB) More Documents & Publications FAQS Reference Guide - Aviation Manager FAQS Reference Guide - Aviation Safety Officer DATE:

  13. Harmonic engine

    DOEpatents

    Bennett, Charles L.

    2009-10-20

    A high efficiency harmonic engine based on a resonantly reciprocating piston expander that extracts work from heat and pressurizes working fluid in a reciprocating piston compressor. The engine preferably includes harmonic oscillator valves capable of oscillating at a resonant frequency for controlling the flow of working fluid into and out of the expander, and also preferably includes a shunt line connecting an expansion chamber of the expander to a buffer chamber of the expander for minimizing pressure variations in the fluidic circuit of the engine. The engine is especially designed to operate with very high temperature input to the expander and very low temperature input to the compressor, to produce very high thermal conversion efficiency.

  14. BLM Fire and Aviation Office | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Fire and Aviation Office Jump to: navigation, search Logo: BLM Fire and Aviation Office Name: BLM Fire and Aviation Office Address: 1849 C Street NW, Rm. 5665 Place: Washington, DC...

  15. Ferrin Moore, Senior Aviation Policy Officer - Bio | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Ferrin Moore, Senior Aviation Policy Officer - Bio Ferrin Moore, Senior Aviation Policy Officer - Bio Ferrin_MoorePersonalProfile.pdf (22.23 KB) More Documents & Publications LopezPersonalProfile.pdf Patricia Hagerty, Aviation Program Analyst - Bio - FLIGHT -

  16. Aviation Manager Functional Area Qualification Standard

    Directives, Delegations, and Other Requirements [Office of Management (MA)]

    2009-12-09

    The Aviation Manager FAQS establishes common functional area competency requirements for all DOE Aviation Manager personnel who provide assistance, direction, guidance, oversight, or evaluation of contractor technical activities that could impact the safe operation of DOE’s defense nuclear facilities.

  17. Aviation Safety Officer, Functional Area Qualification Standard

    Directives, Delegations, and Other Requirements [Office of Management (MA)]

    2010-01-20

    The Aviation Safety Officer FAQS establishes common functional area competency requirements for all DOE aviation safety personnel who provide assistance, or direction, guidance, oversight, or evaluation of contractor technical activities that could impact the safe operation of DOE’s facilities.

  18. Airlines & Aviation Alternative Fuels: Our Drive to Be Early...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Airlines & Aviation Alternative Fuels: Our Drive to Be Early Market Adopters Airlines & Aviation Alternative Fuels: Our Drive to Be Early Market Adopters Plenary III: Early Market ...

  19. ,"Aviation Gasoline Sales to End Users Refiner Sales Volumes...

    Energy Information Administration (EIA) (indexed site)

    Aviation Gasoline Sales to End Users Refiner Sales Volumes" ,"Click worksheet name or tab ... Data for" ,"Data 1","Aviation Gasoline Sales to End Users Refiner ...

  20. FAQS Reference Guide - Aviation Manager | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    FAQS Reference Guide - Aviation Manager FAQS Reference Guide - Aviation Manager This reference guide addresses the competency statements in the January 2010 edition of...

  1. Aviation Enterprises Ltd see Marine Current Turbines Ltd | Open...

    OpenEI (Open Energy Information) [EERE & EIA]

    Aviation Enterprises Ltd see Marine Current Turbines Ltd Jump to: navigation, search Name: Aviation Enterprises Ltd see Marine Current Turbines Ltd Region: United Kingdom Sector:...

  2. Reciprocal Recognition of Existing Personnel Security Clearances

    Directives, Delegations, and Other Requirements [Office of Management (MA)]

    2006-07-20

    Provides direction for implementing actions required by the Office of Management and Budget memorandum, Reciprocal Recognition of Existing Personnel Security Clearances.

  3. Engineering

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Includes Engineering Standards Manual, Master Specifications Index, Drafting Manual, Design Guides, and more. IHS Standards Expert login information Collections include ANSI,...

  4. engineering

    National Nuclear Security Administration (NNSA)

    an award last month for his 3D printing innovation. It could revolutionize additive manufacturing.

    Lawrence Livermore Lab engineer Bryan Moran wasn't necessarily...

  5. Heater head for a Stirling engine

    SciTech Connect

    Darooka, D.K.

    1988-09-06

    A heater head is described for a compound Stirling engine modules, each including a displacer cylinder coaxially aligned with the displacer cylinder of the other of the engine modules, a displacer piston mounted for reciprocation in the displacer cylinder.

  6. Draft RAD Worker Training Reciprocity Program for Work Group...

    Office of Environmental Management (EM)

    Training Reciprocity Program (TRP) Establishing DOE Radworker Training Reciprocity between DOE Contractors and Sites 2 Introduction Since 2009, the Department of Energy (DOE) ...

  7. NNSA walks away with 3 Aviation Awards | National Nuclear Security

    National Nuclear Security Administration (NNSA)

    Administration | (NNSA) walks away with 3 Aviation Awards Thursday, July 9, 2015 - 1:13pm The DOE Headquarters Office of Aviation Management (OAM) awarded the following aviation management awards for performance in 2014. The NNSA, Office of Secure Transportation, Aviation Operations Division, Albuquerque, NM, has, for the second consecutive year, won the U.S. Department of Energy Jeff Snow Aviation Program Memorial Award. The Division provides safe and secure transportation of nuclear

  8. Bioenergy Technologies Office Hosts Alternative Aviation Fuel Workshop |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy Hosts Alternative Aviation Fuel Workshop Bioenergy Technologies Office Hosts Alternative Aviation Fuel Workshop September 13, 2016 - 4:40pm Addthis Bioenergy Technologies Office Hosts Alternative Aviation Fuel Workshop The U.S. Department of Energy's Bioenergy Technologies Office (BETO) is hosting a 2-day workshop gathering lead experts in the field of aviation biofuels on September 14-15, 2016. The Alternative Aviation Fuel Workshop, which is being held in Macon,

  9. ADVANCED RECIPROCATING COMPRESSION TECHNOLOGY (ARCT)

    SciTech Connect

    Danny M. Deffenbaugh; Klaus Brun; Ralph E. Harris; J. Pete Harrell; Robert J. Mckee; J. Jeffrey Moore; Steven J. Svedeman; Anthony J. Smalley; Eugene L. Broerman; Robert A Hart; Marybeth G. Nored; Ryan S. Gernentz; Shane P. Siebenaler

    2005-12-01

    The U.S. natural gas pipeline industry is facing the twin challenges of increased flexibility and capacity expansion. To meet these challenges, the industry requires improved choices in gas compression to address new construction and enhancement of the currently installed infrastructure. The current fleet of installed reciprocating compression is primarily slow-speed integral machines. Most new reciprocating compression is and will be large, high-speed separable units. The major challenges with the fleet of slow-speed integral machines are: limited flexibility and a large range in performance. In an attempt to increase flexibility, many operators are choosing to single-act cylinders, which are causing reduced reliability and integrity. While the best performing units in the fleet exhibit thermal efficiencies between 90% and 92%, the low performers are running down to 50% with the mean at about 80%. The major cause for this large disparity is due to installation losses in the pulsation control system. In the better performers, the losses are about evenly split between installation losses and valve losses. The major challenges for high-speed machines are: cylinder nozzle pulsations, mechanical vibrations due to cylinder stretch, short valve life, and low thermal performance. To shift nozzle pulsation to higher orders, nozzles are shortened, and to dampen the amplitudes, orifices are added. The shortened nozzles result in mechanical coupling with the cylinder, thereby, causing increased vibration due to the cylinder stretch mode. Valve life is even shorter than for slow speeds and can be on the order of a few months. The thermal efficiency is 10% to 15% lower than slow-speed equipment with the best performance in the 75% to 80% range. The goal of this advanced reciprocating compression program is to develop the technology for both high speed and low speed compression that will expand unit flexibility, increase thermal efficiency, and increase reliability and integrity

  10. [Research and workshop on alternative fuels for aviation. Final report

    SciTech Connect

    1999-09-01

    The Renewable Aviation Fuels Development Center (RAFDC) at Baylor University was granted U. S. Department of Energy (US DOE) and Federal Aviation Administration (FAA) funds for research and development to improve the efficiency in ethanol powered aircraft, measure performance and compare emissions of ethanol, Ethyl Tertiary Butyl Ether (ETBE) and 100 LL aviation gasoline. The premise of the initial proposal was to use a test stand owned by Engine Components Inc. (ECI) based in San Antonio, Texas. After the grant was awarded, ECI decided to close down its test stand facility. Since there were no other test stands available at that time, RAFDC was forced to find additional support to build its own test stand. Baylor University provided initial funds for the test stand building. Other obstacles had to be overcome in order to initiate the program. The price of the emission testing equipment had increased substantially beyond the initial quote. Rosemount Analytical Inc. gave RAFDC an estimate of $120,000.00 for a basic emission testing package. RAFDC had to find additional funding to purchase this equipment. The electronic ignition unit also presented a series of time consuming problems. Since at that time there were no off-the-shelf units of this type available, one had to be specially ordered and developed. FAA funds were used to purchase a Super Flow dynamometer. Due to the many unforeseen obstacles, much more time and effort than originally anticipated had to be dedicated to the project, with much of the work done on a volunteer basis. Many people contributed their time to the program. One person, mainly responsible for the initial design of the test stand, was a retired engineer from Allison with extensive aircraft engine test stand experience. Also, many Baylor students volunteered to assemble the. test stand and continue to be involved in the current test program. Although the program presented many challenges, which resulted in delays, the RAFDC's test stand is

  11. ENGINEERING

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ENGINEERING the Future of ENERGY Regional University Alliance National Energy Technology Laboratory Office of Research and Development The Future of Energy The time to redraw America's energy blueprint is now. The challenges we face today are the most critical in decades-from the impact of energy use on global ecosystems to the difficulties of efficiently harnessing our natural resources. Because energy is fundamental to human welfare, we must develop sustainable systems that make clean,

  12. Internal combustion engine with compound air compression

    SciTech Connect

    Paul, M.A.; Paul, A.

    1991-10-15

    This patent describes an internal combustion engine in combination with a compound air compression system. It comprises: a reciprocator with at least one cylinder, at least one piston reciprocal in the cylinder and a combustion chamber formed in substantial part by portions of the piston and cylinder, the reciprocator having a drive shaft; a rotary compressor having a drive shaft mechanically coupled to the drive shaft of the reciprocator, the rotary compressor having a Wankel-type, three-lobe, epitrochiodal configuration sides having a conduit conjected to the reciprocator for supplying compressed air to the reciprocator; a turbocharged with a gas turbine and a turbocompressor, the turbocompressor having an air conduit connected to the expander side of the rotary compressor; and a bypass conduit with a valve means connecting the turbocharger to the reciprocator for supplying compressed air directly to the reciprocator wherein the drive shaft of the reciprocator and the drive shaft of the compressor have connecting means for transmitting mechanical energy to the reciprocator at mid to high operating speeds of the engine when the turbocharge supplies compressed air to the rotary compressor and, at least in part, drives the rotary compressor.

  13. Alternative Aviation Fuel Workshop Draft Agenda | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Draft Agenda Alternative Aviation Fuel Workshop Draft Agenda alternative_aviation_fuel_workshop_2016_draft_agenda (720.08 KB) More Documents & Publications Bioenergy 2015 Agenda Biomass 2013 Agenda Biomass 2014 Draft Agenda

  14. FAQS Reference Guide - Aviation Safety Officer | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Safety Officer FAQS Reference Guide - Aviation Safety Officer This reference guide addresses the competency statements in the January 2010 edition of DOE-STD-1164-2003 Chg 1, Aviation Safety Officer Functional Area Qualification Standard. Aviation Safety Officer Qualification Standard Reference Guide, March 2010 (848 KB) More Documents & Publications FAQS Reference Guide - Aviation Manager DOE-STD-1165-2003 DOE-STD-1164

  15. Aviation Manager Functional Area Qualification Standard

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    DOE-STD-1165-2003 September 2003 CHANGE NOTICE NO. 1 December 2009 DOE STANDARD AVIATION MANAGER FUNCTIONAL AREA QUALIFICATION STANDARD DOE Defense Nuclear Facilities Technical Personnel U.S. Department of Energy AREA TRNG Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. DOE-STD-1165-2003 CH-1 ii This document is available on the Department of Energy Technical Standards Program Web Site at http://www.hss.energy.gov/nuclearsafety/techstds/

  16. Aviation Safety Officer Functional Area Qualification Standard

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    64-2003 September 2003 CHANGE NOTICE NO. 1 January 2010 DOE STANDARD AVIATION SAFETY OFFICER FUNCTIONAL AREA QUALIFICATION STANDARD DOE Defense Nuclear Facilities Technical Personnel U.S. Department of Energy AREA TRNG Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. DOE-STD-1164-2003 CH-1 ii This document is available on the Department of Energy Technical Standards Program Web Site at http://www.hss.energy.gov/nuclearsafety/techstds/

  17. Stirling engine with pressurized crankcase

    DOEpatents

    Corey, John A.

    1988-01-01

    A two piston Stirling engine wherein the pistons are coupled to a common crankshaft via bearing means, the pistons include pad means to minimize friction between the pistons and the cylinders during reciprocation of the pistons, means for pressurizing the engine crankcase, and means for cooling the crankshaft and the bearing means eliminating the need for oil in the crankcase.

  18. Rotary valve internal combustion engine

    SciTech Connect

    Bunk, P.H.

    1989-03-28

    A rotary valve internal combustion engine is described, comprising: an engine block; at least one cylinder in the engine block; at least one cylinder having a top end; cylinder head means located adjacent the top end of at least one cylinder, the cylinder head means having a cylindrically shaped cavity therein, the cylindrically shaped cavity being oriented in perpendicular relation to at least one cylinder; a piston sealingly mounted in at least one cylinder for reciprocable movement therein, the reciprocable movement including an intake stroke and an exhaust stroke; engine shaft means rotatably mounted to the engine block; means within the engine block for converting the reciprocable movement of the piston into rotary motion of the engine shaft means; a cylinder port located at the top end of at least one cylinder; a rotary valve rotatably mounted in the cylindrically shaped cavity; means connected with the engine shaft means for rotating the rotary valve in a predetermined synchronization with the reciprocable movement of the piston; aspiration means in the rotary valve for selectively aspirating at least one cylinder during the intake an exhaust strokes; and a spark plug removably mounted within the rotary valve and rotatable therewith.

  19. Two piston V-type Stirling engine

    SciTech Connect

    Corey, J.A.

    1987-01-06

    This patent describes a Stirling cycle engine comprising: a compression piston reciprocal in a cold compression space and an expansion piston operated from a common crank shaft reciprocal in an expansion space out of phase with respect to each other. The pistons reciprocate along axes which are angularly disposed to one another, such that a V-configuration engine is formed. A regenerator means is positioned immediately adjacent a cooling means. The cooling means is axially aligned immediately adjacent the cold compression piston so as to minimize cold duct volume. A heating means is coupled with the regenerator and the expansion space completing the Stirling cycle.

  20. Microelectromechanical reciprocating-tooth indexing apparatus

    DOEpatents

    Allen, James J. (Albuquerque, NM)

    1999-01-01

    An indexing apparatus is disclosed that can be used to rotate a gear or move a rack in a precise, controllable manner. The indexing apparatus, based on a reciprocating shuttle driven by one or more actuators, can be formed either as a micromachine, or as a millimachine. The reciprocating shuttle of the indexing apparatus can be driven by a thermal, electrostatic or electromagnetic actuator, with one or more wedge-shaped drive teeth of the shuttle being moveable to engage and slide against indexing teeth on the gear or rack, thereby moving the gear or rack. The indexing apparatus can be formed by either surface micromachining processes or LIGA processes, depending on the size of the apparatus that is to be formed.

  1. Geographic Area Month Aviation Gasoline Kerosene-Type Jet Fuel

    Energy Information Administration (EIA) (indexed site)

    District and State (Cents per Gallon Excluding Taxes) - Continued Geographic Area Month Aviation Gasoline Kerosene-Type Jet Fuel Kerosene Sales to End Users Sales for Resale...

  2. Greenhouse Gas Emissions from Aviation and Marine Transportation...

    OpenEI (Open Energy Information) [EERE & EIA]

    and Policies Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Greenhouse Gas Emissions from Aviation and Marine Transportation: Mitigation Potentials and Policies...

  3. DOE - Office of Legacy Management -- Bendix Aviation Corporation...

    Office of Legacy Management (LM)

    Corporation Kansas City Plant - MO 06 FUSRAP Considered Sites Site: Bendix Aviation Corporation Kansas City Plant (MO.06) Designated Name: Alternate Name: Location: Evaluation ...

  4. Table 49. Prime Supplier Sales Volumes of Aviation Fuels, Propane...

    Gasoline and Diesel Fuel Update

    See footnotes at end of table. 49. Prime Supplier Sales Volumes of Aviation Fuels, Propane, and Residual Fuel Oil by PAD District and State 386 Energy Information...

  5. Table 49. Prime Supplier Sales Volumes of Aviation Fuels, Propane...

    Annual Energy Outlook

    Marketing Annual 1998 Table 49. Prime Supplier Sales Volumes of Aviation Fuels, Propane, and Residual Fuel Oil by PAD District and State (Thousand Gallons per Day) -...

  6. Table 49. Prime Supplier Sales Volumes of Aviation Fuels, Propane...

    Energy Information Administration (EIA) (indexed site)

    Marketing Annual 1995 Table 49. Prime Supplier Sales Volumes of Aviation Fuels, Propane, and Residual Fuel Oil by PAD District and State (Thousand Gallons per Day) -...

  7. Table 49. Prime Supplier Sales Volumes of Aviation Fuels, Propane...

    Gasoline and Diesel Fuel Update

    Marketing Annual 1999 Table 49. Prime Supplier Sales Volumes of Aviation Fuels, Propane, and Residual Fuel Oil by PAD District and State (Thousand Gallons per Day) -...

  8. DOE - Office of Legacy Management -- Bendix Aviation Corp Pioneer...

    Office of Legacy Management (LM)

    Corp Pioneer Div - IA 05 FUSRAP Considered Sites Site: BENDIX AVIATION CORP., PIONEER DIV. (IA.05 ) Eliminated from consideration under FUSRAP Designated Name: Not Designated...

  9. NNSA Congratulates Nevada Site Office Aviation Program for Receiving...

    National Nuclear Security Administration (NNSA)

    compliance rating awarded to NSONational Security Technologies (NSTec) by the DOE OAM audit team, confirming their flawless aviation support to NNSA's Emergency Response mission ...

  10. EERE Success Story-Aviation Biofuel Milestone Reached: 5 Gallons...

    Energy.gov [DOE] (indexed site)

    The companys innovative technology converts municipal solid waste (household trash) into low-cost, sustainable aviation biofuel. This investment adds to their agreement to ...

  11. What Do Engines Want for breakfast

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Do Engines Want for Breakfast? Charles J. Mueller Combustion Research Facility Sandia National Laboratories Sustainable Transportation Summit Walter E. Washington Convention Center July 12, 2016 2 Outline ● Classes of reciprocating engines - Spark ignition - Compression ignition - Advanced combustion ● Classes of fuel properties - Chemical and physical - Environmental and consumer acceptance - Production and distribution ● Key fuel properties from an engine perspective - Ignition quality -

  12. Thermochemical Conversion Proceeses to Aviation Fuels | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Energy Conversion Proceeses to Aviation Fuels Thermochemical Conversion Proceeses to Aviation Fuels This is a presentation from the November 27, 2012, Sustainable Alternative Fuels Cost Workshop given by John Holladay, PNNL holladay_caafi_workshop.pdf (1.68 MB) More Documents & Publications Pathways for Algal Biofuels Technology Pathway Selection Effort 2013 Peer Review Presentations-Bio-oil

  13. Memorandum, Health and Safety Training Reciprocity Program- July 12, 2013

    Energy.gov [DOE]

    The centerpiece of TRAC is HSS' voluntary training reciprocity program that has tremendous potential to bring consistency and standardization to health and safety training across DOE.

  14. ,"U.S. Sales for Resale Refiner Sales Volumes of Aviation Fuels...

    Energy Information Administration (EIA) (indexed site)

    Sales Volumes of Aviation Fuels, Kerosene, Propane, No.1 and No. 2 Distillates" ,"Click ... Volumes of Aviation Fuels, Kerosene, Propane, No.1 and No. 2 Distillates",11,"Monthly"...

  15. ,"U.S. Sales to End Users Refiner Sales Volumes of Aviation Fuels...

    Energy Information Administration (EIA) (indexed site)

    Sales Volumes of Aviation Fuels, Kerosene, Propane, No.1 and No. 2 Distillates" ,"Click ... Volumes of Aviation Fuels, Kerosene, Propane, No.1 and No. 2 Distillates",11,"Monthly"...

  16. Rotary reciprical combustion engines

    SciTech Connect

    Blount, D.H.

    1992-10-20

    This patent describes a rotary-reciprocal combustion engine having a cycle which includes the four strokes of intake, compression, expansion and exhaustion, the engine. It comprises: a housing formed with a peripheral wall with side walls, a rotor in the housing, the inner surface of the peripheral inner wall being cylindrical; a shaft; mounted in the center of the housing, passing through the rotor's hub and extending through the side walls of the housing, the hub having means to allow the rotor to reciprocate on the shaft while the shaft is rotating with the rotor; a reciprocal and rotary guide having means to guide the rotary and reciprocal motions of the rotor while keeping the rotor's piston in continuous sealing contact with the cylinder chamber walls and varying the volume of the cylinder chambers enabling a compression of a gaseous mixture to take place after aspirating a gaseous mixture; an ignition system having means for igniting compressed gaseous mixture and expansion of the cylinder chambers due to pressure of the combustion products.

  17. Biofuels in Defense, Aviation, and Marine

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    biorefineries o Cost-competitive biofuel with conventional petroleum (wo ... F2F2 13 | Bioenergy Technologies Office * Engine re-light at altitude, polar climate, in ...

  18. Harmonic engine

    DOEpatents

    Bennett, Charles L.; Sewall, Noel; Boroa, Carl

    2014-08-19

    An engine based on a reciprocating piston engine that extracts work from pressurized working fluid. The engine includes a harmonic oscillator inlet valve capable of oscillating at a resonant frequency for controlling the flow of working fluid into of the engine. In particular, the inlet valve includes an inlet valve head and a spring arranged together as a harmonic oscillator so that the inlet valve head is moveable from an unbiased equilibrium position to a biased closed position occluding an inlet. Upon releasing the inlet valve the inlet valve head undergoes a single oscillation past the equilibrium positio to a maximum open position and returns to a biased return position close to the closed position to choke the flow and produce a pressure drop across the inlet valve causing the inlet valve to close. Protrusions carried either by the inlet valve head or piston head are used to bump open the inlet valve from the closed position and initiate the single oscillation of the inlet valve head, and protrusions carried either by the outlet valve head or piston head are used to close the outlet valve ahead of the bump opening of the inlet valve.

  19. From Farm to Flight: Can Biofuels Green Aviation? | Argonne National...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    From Farm to Flight: Can Biofuels Green Aviation? July 25, 2016 8:30AM to July 29, 2016 ... In this Educational Programs workshop, teachers will explore: The problem: Can Biofuels ...

  20. DOE O 440.2C Aviation Management and Safety

    Energy.gov [DOE]

    On June 15, 2011, the Department issued a Contractor Requirements Document (CRD) to the above listed Directive. This Directive establishes a policy framework that will ensure safety, efficiency and effectiveness of government or contractor aviation operation.

  1. U.S. Aviation Gasoline Refiner Sales Volumes

    Gasoline and Diesel Fuel Update

    Product: Aviation Gasoline Kerosene-Type Jet Fuel Propane (Consumer Grade) Kerosene No. 1 Distillate No. 2 Distillate No. 2 Diesel Fuel No. 2 Diesel, Ultra Low-Sulfur No. 2 Diesel, ...

  2. Stirling cycle engine

    DOEpatents

    Lundholm, Gunnar

    1983-01-01

    In a Stirling cycle engine having a plurality of working gas charges separated by pistons reciprocating in cylinders, the total gas content is minimized and the mean pressure equalization among the serial cylinders is improved by using two piston rings axially spaced at least as much as the piston stroke and by providing a duct in the cylinder wall opening in the space between the two piston rings and leading to a source of minimum or maximum working gas pressure.

  3. Stirling cycle engine

    SciTech Connect

    Lundholm, G.

    1983-11-29

    In a Stirling cycle engine having a plurality of working gas charges separated by pistons reciprocating in cylinders, the total gas content is minimized and the mean pressure equalization among the serial cylinders is improved by using two piston rings axially spaced at least as much as the piston stroke and by providing a duct in the cylinder wall opening in the space between the two piston rings and leading to a source of minimum or maximum working gas pressure. 1 fig.

  4. Aviation Week Honors KCNSC Relocation | National Nuclear Security

    National Nuclear Security Administration (NNSA)

    Administration | (NNSA) Aviation Week Honors KCNSC Relocation Friday, November 13, 2015 - 6:15pm Kansas City National Security Campus Relocation Leader Brad Hughes, left, and NNSA Kansas City Field Office Site Manager Mark Holecek The Kansas City National Security Campus relocation project was recognized as an industry benchmark last week at the 12th annual Aviation Week Program Excellence Awards competition. Awards were presented Nov. 4 in Scottsdale, Arizona. The NSC's contractor,

  5. Application of human error analysis to aviation and space operations

    SciTech Connect

    Nelson, W.R.

    1998-03-01

    For the past several years at the Idaho National Engineering and Environmental Laboratory (INEEL) the authors have been working to apply methods of human error analysis to the design of complex systems. They have focused on adapting human reliability analysis (HRA) methods that were developed for Probabilistic Safety Assessment (PSA) for application to system design. They are developing methods so that human errors can be systematically identified during system design, the potential consequences of each error can be assessed, and potential corrective actions (e.g. changes to system design or procedures) can be identified. The primary vehicle the authors have used to develop and apply these methods has been a series of projects sponsored by the National Aeronautics and Space Administration (NASA) to apply human error analysis to aviation operations. They are currently adapting their methods and tools of human error analysis to the domain of air traffic management (ATM) systems. Under the NASA-sponsored Advanced Air Traffic Technologies (AATT) program they are working to address issues of human reliability in the design of ATM systems to support the development of a free flight environment for commercial air traffic in the US. They are also currently testing the application of their human error analysis approach for space flight operations. They have developed a simplified model of the critical habitability functions for the space station Mir, and have used this model to assess the affects of system failures and human errors that have occurred in the wake of the collision incident last year. They are developing an approach so that lessons learned from Mir operations can be systematically applied to design and operation of long-term space missions such as the International Space Station (ISS) and the manned Mars mission.

  6. Reciprocity and gyrotropism in magnetic resonance transduction

    SciTech Connect

    Tropp, James

    2006-12-15

    We give formulas for transduction in magnetic resonance - i.e., the appearance of an emf due to Larmor precession of spins - based upon the modified Lorentz reciprocity principle for gyrotropic (also called 'nonreciprocal') media, i.e., in which a susceptibility tensor is carried to its transpose by reversal of an external static field [cf., R. F. Harrington and A. T. Villeneuve IRE Trans. Microwave Theory and Technique MTT6, 308 (1958)]. Prior applications of reciprocity to magnetic resonance, despite much success, have ignored the gyrotropism which necessarily arises due to nuclear and/or unpaired electronic spins. For detection with linearly polarized fields, oscillating at the Larmor frequency, the emf is written in terms of a volume integral containing a product of two factors which we define as the antenna patterns, i.e. (H{sub 1x}{+-}iH{sub 1y}), where, e.g., for a single transceive antenna, the H's are just the spatially dependent oscillatory magnetic field strengths, per the application of some reference current at the antenna terminals, with the negative sign obtaining for transmission, and the positive for reception. Similar expressions hold for separate transmit and receive antennas; expressions are also given for circular polarization of the fields. We then exhibit a receive-only array antenna of two elements for magnetic resonance imaging of protons, which, due an intensity artifact arising from stray reactive coupling of the elements, produces, despite its own bilateral symmetry, asymmetric proton NMR images of a symmetric cylindrical phantom containing aqueous saline solution [J. Tropp and T. Schirmer, J. Magn. Reson. 151, 146 (2001)]. Modification of this two-port antenna, to function in transmit-receive mode, allows us to demonstrate highly nonreciprocal behavior: that is, to record images (of cylindrical test phantoms containing aqueous saline solution) whose appearance dramatically changes, when the roles of transmission and reception are

  7. Drift stabilizer for reciprocating free-piston devices

    DOEpatents

    Ward, William C.; Corey, John A.; Swift, Gregory W.

    2003-05-20

    A free-piston device has a stabilized piston drift. A piston having a frequency of reciprocation over a stroke length and with first and second sides facing first and second variable volumes, respectively, for containing a working fluid defining an acoustic wavelength at the frequency of reciprocation. A bypass tube waveguide connects the first and second variable volumes at all times during reciprocation of the piston. The waveguide has a relatively low impedance for steady flow and a relatively high impedance for oscillating flow at the frequency of reciprocation of the piston, so that steady flow returns fluid leakage from about the piston between the first and second volumes while oscillating flow is not diverted through the waveguide. Thus, net leakage about the piston is returned during each stroke of the piston while oscillating leakage is not allowed and pressure buildup on either the first or second side of the piston is avoided to provide a stable piston location.

  8. Engineering Technician

    Energy.gov [DOE]

    Alternate Title(s):Civil Engineering Technician; Electrical Engineering Technician; Mechanical Engineering Technician; Environmental Engineering Technician

  9. Rotary internal combustion engine

    SciTech Connect

    Murray, J.L.; Mosca, J.O.

    1992-02-25

    This patent describes a rotary internal combustion engine. It includes a housing; a cam track internally disposed within the housing and adapted to receive a cam follower; an engine block disposed within the housing, the engine block being relatively rotatable within the housing about a central axis; means connectable to an external drive member for translating the relative rotation of the engine block with respect to the housing into useful work; at least one radially arranged cylinder assembly on the block, each cylinder assembly including a cylinder having a longitudinal axis extending generally radially outwardly from the rotational axis of the block, the cylinder including means defining an end wall, a piston member disposed within the cylinder and adapted to reciprocate within the cylinder; the piston, cylinder and cylinder end wall together.

  10. Erosion-Resistant Nanocoatings for Improved Energy Efficiency in Gas Turbine Engines

    SciTech Connect

    2009-06-01

    This factsheet describes a research project whose goal is to test and substantiate erosion-resistant (ER) nanocoatings for application on compressor airfoils for gas turbine engines in both industrial gas turbines and commercial aviation.

  11. Performance of a New Lightweight Reciprocating Pump

    SciTech Connect

    Whitehead, J C

    2005-06-09

    A new four-chamber piston pump design has been fabricated and tested. The small-scale propellant pump is intended to be powered by gas at elevated temperatures, e.g. in a gas-generator cycle rocket propulsion system. Two key features are combined for the first time: leak-tight liquid-cooled seals, and a high throughput per unit hardware mass. Measured performance curves quantify flows, pressures, leakage, volumetric efficiency, and tank pressure requirements. A pair of 300-gram pumps operating with significant margin could deliver fuel and oxidizer at 5 MPa to a compact lightweight 1000-N engine, while tank pressure remains at 0.35 MPa. Pump weight is well below one percent of thrust, as is typical for launch vehicle engines. Applications include small upper stages, aggressive maneuvers in space, and miniature launch vehicles for Mars ascent.

  12. Overview of Aviation Fuel Markets for Biofuels Stakeholders

    SciTech Connect

    Davidson, C.; Newes, E.; Schwab, A.; Vimmerstedt, L.

    2014-07-01

    This report is for biofuels stakeholders interested the U.S. aviation fuel market. Jet fuel production represents about 10% of U.S. petroleum refinery production. Exxon Mobil, Chevron, and BP top producers, and Texas, Louisiana, and California are top producing states. Distribution of fuel primarily involves transport from the Gulf Coast to other regions. Fuel is transported via pipeline (60%), barges on inland waterways (30%), tanker truck (5%), and rail (5%). Airport fuel supply chain organization and fuel sourcing may involve oil companies, airlines, airline consortia, airport owners and operators, and airport service companies. Most fuel is used for domestic, commercial, civilian flights. Energy efficiency has substantially improved due to aircraft fleet upgrades and advanced flight logistic improvements. Jet fuel prices generally track prices of crude oil and other refined petroleum products, whose prices are more volatile than crude oil price. The single largest expense for airlines is jet fuel, so its prices and persistent price volatility impact industry finances. Airlines use various strategies to manage aviation fuel price uncertainty. The aviation industry has established goals to mitigate its greenhouse gas emissions, and initial estimates of biojet life cycle greenhouse gas emissions exist. Biojet fuels from Fischer-Tropsch and hydroprocessed esters and fatty acids processes have ASTM standards. The commercial aviation industry and the U.S. Department of Defense have used aviation biofuels. Additional research is needed to assess the environmental, economic, and financial potential of biojet to reduce greenhouse gas emissions and mitigate long-term upward price trends, fuel price volatility, or both.

  13. Means and method of balancing multi-cylinder reciprocating machines

    SciTech Connect

    Corey, J.A.; Walsh, M.M.

    1985-10-08

    A virtual balancing axis arrangement is described for multi-cylinder reciprocating piston machines for effectively balancing out imbalanced forces and minimizing residual imbalance moments acting on the crankshaft of such machines without requiring the use of additional parallel-arrayed balancing shafts or complex and expensive gear arrangements. The novel virtual balancing axis arrangement is capable of being designed into multi-cylinder reciprocating piston and crankshaft machines for substantially reducing vibrations induced during operation of such machines with only minimal number of additional component parts. Some of the required component parts may be available from parts already required for operation of auxiliary equipment, such as oil and water pumps used in certain types of reciprocating piston and crankshaft machine so that by appropriate location and dimensioning in accordance with the teachings of the invention, the virtual balancing axis arrangement can be built into the machine at little or no additional cost. 24 figs.

  14. Means and method of balancing multi-cylinder reciprocating machines

    DOEpatents

    Corey, John A.; Walsh, Michael M.

    1985-01-01

    A virtual balancing axis arrangement is described for multi-cylinder reciprocating piston machines for effectively balancing out imbalanced forces and minimizing residual imbalance moments acting on the crankshaft of such machines without requiring the use of additional parallel-arrayed balancing shafts or complex and expensive gear arrangements. The novel virtual balancing axis arrangement is capable of being designed into multi-cylinder reciprocating piston and crankshaft machines for substantially reducing vibrations induced during operation of such machines with only minimal number of additional component parts. Some of the required component parts may be available from parts already required for operation of auxiliary equipment, such as oil and water pumps used in certain types of reciprocating piston and crankshaft machine so that by appropriate location and dimensioning in accordance with the teachings of the invention, the virtual balancing axis arrangement can be built into the machine at little or no additional cost.

  15. Double-reed exhaust valve engine

    DOEpatents

    Bennett, Charles L.

    2015-06-30

    An engine based on a reciprocating piston engine that extracts work from pressurized working fluid. The engine includes a double reed outlet valve for controlling the flow of low-pressure working fluid out of the engine. The double reed provides a stronger force resisting closure of the outlet valve than the force tending to open the outlet valve. The double reed valve enables engine operation at relatively higher torque and lower efficiency at low speed, with lower torque, but higher efficiency at high speed.

  16. Implementation Guide - Aviation Program Performance Indicators (Metrics) for use with DOE O 440.2B, Aviation Management And Safety

    Directives, Delegations, and Other Requirements [Office of Management (MA)]

    2002-12-10

    The Guide provides information regarding Departmental expectations on provisions of DOE 440.2B, identifies acceptable methods of implementing Aviation Program Performance Indicators (Metrics) requirements in the Order, and identifies relevant principles and practices by referencing Government and non-Government standards. Canceled by DOE G 440.2B-1A.

  17. Pressurized-fluid-operated engine

    SciTech Connect

    Holleyman, J.E.

    1990-01-30

    This patent describes a pressurized-fluid-operated reciprocating engine for providing output power by use of a pressurized gas that expands within the engine without combustion. It comprises: an engine block having a plurality of cylinders within which respective pistons are reciprocatable to provide a rotary power output; gas inlet means connected with the engine block for introducing a pressurized gas into the respective cylinders in a predetermined, timed relationship to provide a smooth power output from the engine; gas outlet means connected with the engine block for conveying exhaust gas from the respective cylinders after the gas expanded to move the pistons within the cylinders; and recirculation means extending between the inlet means and the outlet means for recirculation a predetermined quantity of exhaust gas. The recirculation means including ejector means for drawing exhaust gas into the recirculation means.

  18. Harmonic uniflow engine

    DOEpatents

    Bennett, Charles L.

    2016-03-22

    A reciprocating-piston uniflow engine includes a harmonic oscillator inlet valve capable of oscillating at a resonant frequency for controlling the flow of working fluid into the engine. In particular, the inlet valve includes an inlet valve head and a spring arranged together as a harmonic oscillator so that the inlet valve head is moveable from an unbiased equilibrium position to a biased closed position occluding an inlet. When released, the inlet valve head undergoes a single oscillation past the equilibrium position to a maximum open position and returns to a biased return position close to the closed position to choke the flow and produce a pressure drop across the inlet valve causing the inlet valve to close. In other embodiments, the harmonic oscillator arrangement of the inlet valve enables the uniflow engine to be reversibly operated as a uniflow compressor.

  19. Stratified cross combustion engine

    SciTech Connect

    Rhoads, J.L.

    1981-06-23

    A piston engine is provided in which adjacent cylinder pairs share a common combustion chamber and the pistons are mounted to reciprocate substantially in phase, one of the pistons in each piston pair receiving a rich mixture which is ignited by a sparkplug in that cylinder, with the other cylinder in the cylinder pair being passive in its preferred form, and receiving through a separate intake valve either pure air or a leaner mixture into which the combusted richer mixture pours, insuring that the greatest combustion possible resulting in the greatest percentage of carbon dioxide formation as opposed to carbon monoxide is created.

  20. Process for Converting Algal Oil to Alternative Aviation Fuel - Energy

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Innovation Portal Process for Converting Algal Oil to Alternative Aviation Fuel Los Alamos National Laboratory Contact LANL About This Technology The conversion process uses a Kolbe-based method of converting the fatty acids from the algal lipid triglycerides to fuel. The conversion process uses a Kolbe-based method of converting the fatty acids from the algal lipid triglycerides to fuel. Technology Marketing Summary Conversion of triglyceride oils extracted from algae-derived lipids into

  1. Intrinsically irreversible heat engine

    DOEpatents

    Wheatley, J.C.; Swift, G.W.; Migliori, A.

    1984-01-01

    A class of heat engines based on an intrinsically irreversible heat transfer process is disclosed. In a typical embodiment the engine comprises a compressible fluid that is cyclically compressed and expanded while at the same time being driven in reciprocal motion by a positive displacement drive means. A second thermodynamic medium is maintained in imperfect thermal contact with the fluid and bears a broken thermodynamic symmetry with respect to the fluid. The second thermodynamic medium is a structure adapted to have a low fluid flow impedance with respect to the compressible fluid, and which is further adapted to be in only moderate thermal contact with the fluid. In operation, thermal energy is pumped along the second medium due to a phase lag between the cyclical heating and cooling of the fluid and the resulting heat conduction between the fluid and the medium. In a preferred embodiment the engine comprises an acoustical drive and a housing containing a gas which is driven at a resonant frequency so as to be maintained in a standing wave. Operation of the engine at acoustic frequencies improves the power density and coefficient of performance. The second thermodynamic medium can be coupled to suitable heat exchangers to utilize the engine as a simple refrigeration device having no mechanical moving parts. Alternatively, the engine is reversible in function so as to be utilizable as a prime mover by coupling it to suitable sources and sinks of heat.

  2. Intrinsically irreversible heat engine

    DOEpatents

    Wheatley, J.C.; Swift, G.W.; Migliori, A.

    1984-12-25

    A class of heat engines based on an intrinsically irreversible heat transfer process is disclosed. In a typical embodiment the engine comprises a compressible fluid that is cyclically compressed and expanded while at the same time being driven in reciprocal motion by a positive displacement drive means. A second thermodynamic medium is maintained in imperfect thermal contact with the fluid and bears a broken thermodynamic symmetry with respect to the fluid. The second thermodynamic medium is a structure adapted to have a low fluid flow impedance with respect to the compressible fluid, and which is further adapted to be in only moderate thermal contact with the fluid. In operation, thermal energy is pumped along the second medium due to a phase lag between the cyclical heating and cooling of the fluid and the resulting heat conduction between the fluid and the medium. In a preferred embodiment the engine comprises an acoustical drive and a housing containing a gas which is driven at a resonant frequency so as to be maintained in a standing wave. Operation of the engine at acoustic frequencies improves the power density and coefficient of performance. The second thermodynamic medium can be coupled to suitable heat exchangers to utilize the engine as a simple refrigeration device having no mechanical moving parts. Alternatively, the engine is reversible in function so as to be utilizable as a prime mover by coupling it to suitable sources and sinks of heat. 11 figs.

  3. Intrinsically irreversible heat engine

    DOEpatents

    Wheatley, John C.; Swift, Gregory W.; Migliori, Albert

    1984-01-01

    A class of heat engines based on an intrinsically irreversible heat transfer process is disclosed. In a typical embodiment the engine comprises a compressible fluid that is cyclically compressed and expanded while at the same time being driven in reciprocal motion by a positive displacement drive means. A second thermodynamic medium is maintained in imperfect thermal contact with the fluid and bears a broken thermodynamic symmetry with respect to the fluid. the second thermodynamic medium is a structure adapted to have a low fluid flow impedance with respect to the compressible fluid, and which is further adapted to be in only moderate thermal contact with the fluid. In operation, thermal energy is pumped along the second medium due to a phase lag between the cyclical heating and cooling of the fluid and the resulting heat conduction between the fluid and the medium. In a preferred embodiment the engine comprises an acoustical drive and a housing containing a gas which is driven at a resonant frequency so as to be maintained in a standing wave. Operation of the engine at acoustic frequencies improves the power density and coefficient of performance. The second thermodynamic medium can be coupled to suitable heat exchangers to utilize the engine as a simple refrigeration device having no mechanical moving parts. Alternatively, the engine is reversible in function so as to be utilizable as a prime mover by coupling it to suitable sources and sinks of heat.

  4. Ubiquity of Benford's law and emergence of the reciprocal distribution

    DOE PAGES [OSTI]

    Friar, James Lewis; Goldman, Terrance J.; Pérez-Mercader, J.

    2016-04-07

    In this paper, we apply the Law of Total Probability to the construction of scale-invariant probability distribution functions (pdf's), and require that probability measures be dimensionless and unitless under a continuous change of scales. If the scale-change distribution function is scale invariant then the constructed distribution will also be scale invariant. Repeated application of this construction on an arbitrary set of (normalizable) pdf's results again in scale-invariant distributions. The invariant function of this procedure is given uniquely by the reciprocal distribution, suggesting a kind of universality. Finally, we separately demonstrate that the reciprocal distribution results uniquely from requiring maximum entropymore » for size-class distributions with uniform bin sizes.« less

  5. EERE Success Story-Aviation Biofuel Milestone Reached: 5 Gallons of Jet

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Fuel Produced from Industrial Waste Gasses | Department of Energy Aviation Biofuel Milestone Reached: 5 Gallons of Jet Fuel Produced from Industrial Waste Gasses EERE Success Story-Aviation Biofuel Milestone Reached: 5 Gallons of Jet Fuel Produced from Industrial Waste Gasses August 22, 2016 - 3:22pm Addthis In June 2015, United Airlines announced a partnership with biofuel company Fulcrum BioEnergy, to invest in future commercial scale aviation biofuel plants. The company’s innovative

  6. Multiple volume compressor for hot gas engine

    SciTech Connect

    Stotts, R.E.

    1986-07-22

    An apparatus is described for pumping down a hot gas engine that includes: a multiple volume, single stage compressor having a plurality of axially aligned compression chambers, each chamber having a different capacity, piston means reciprocally mounted in each chamber, the piston means being joined together whereby they move in unison within the chambers, drive means connected to at least one of the piston means for reciprocating the piston means within the chambers, intake means for connecting an inlet in each chamber to the engine for pumping working gas from the engine, discharge means for connecting an outlet in each chamber to a gas supply reservoir for storing the gas, a bypass loop associated with each chamber for connecting the inlet and the outlet of each chamber in communication, and a positionable means in each loop selectively opening and closing the bypass loop whereby the capacity of the compressor can be changed.

  7. Airlines & Aviation Alternative Fuels: Our Drive to Be Early Market Adopters

    Energy.gov [DOE]

    Plenary III: Early Market Adopters Airlines & Aviation Alternative Fuels: Our Drive to Be Early Market Adopters Nancy N. Young, Vice President, Environmental Affairs, Airlines for America

  8. DOE-STD-1165-2003; Aviation Manager Functional Area Qualification...

    Energy.gov [DOE] (indexed site)

    APPROVAL The Federal Technical Capability Panel consists of senior Department of Energy ... of a written examination (preferred method), such as Completion of the Aviation ...

  9. DOE-STD-1164-2003; Aviation Safety Officer Functional Area Qualificati...

    Energy.gov [DOE] (indexed site)

    APPROVAL The Federal Technical Capability Panel consists of senior Department of Energy ... of a written examination (preferred method), such as Completion of the Aviation ...

  10. Table A2. Refiner/Reseller Prices of Aviation Fuels, Propane...

    Annual Energy Outlook

    Marketing Annual 1999 421 Table A2. RefinerReseller Prices of Aviation Fuels, Propane, and Kerosene, by PAD District, 1983-Present (Cents per Gallon Excluding Taxes) -...

  11. Table A2. Refiner/Reseller Prices of Aviation Fuels, Propane...

    Annual Energy Outlook

    Marketing Annual 1995 467 Table A2. RefinerReseller Prices of Aviation Fuels, Propane, and Kerosene, by PAD District, 1983-Present (Cents per Gallon Excluding Taxes) -...

  12. Capacity Utilization Study for Aviation Security Cargo Inspection Queuing System

    SciTech Connect

    Allgood, Glenn O; Olama, Mohammed M; Lake, Joe E; Brumback, Daryl L

    2010-01-01

    In this paper, we conduct performance evaluation study for an aviation security cargo inspection queuing system for material flow and accountability. The queuing model employed in our study is based on discrete-event simulation and processes various types of cargo simultaneously. Onsite measurements are collected in an airport facility to validate the queuing model. The overall performance of the aviation security cargo inspection system is computed, analyzed, and optimized for the different system dynamics. Various performance measures are considered such as system capacity, residual capacity, throughput, capacity utilization, subscribed capacity utilization, resources capacity utilization, subscribed resources capacity utilization, and number of cargo pieces (or pallets) in the different queues. These metrics are performance indicators of the system s ability to service current needs and response capacity to additional requests. We studied and analyzed different scenarios by changing various model parameters such as number of pieces per pallet, number of TSA inspectors and ATS personnel, number of forklifts, number of explosives trace detection (ETD) and explosives detection system (EDS) inspection machines, inspection modality distribution, alarm rate, and cargo closeout time. The increased physical understanding resulting from execution of the queuing model utilizing these vetted performance measures should reduce the overall cost and shipping delays associated with new inspection requirements.

  13. Engineers Named to National Academy | GE Global Research

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    3 GE Engineers Elected to National Academy of Engineering Click to email this to a friend (Opens in new window) Share on Facebook (Opens in new window) Click to share (Opens in new window) Click to share on LinkedIn (Opens in new window) Click to share on Tumblr (Opens in new window) 3 GE Engineers Elected to National Academy of Engineering GE (NYSE: GE) announced today that three distinguished engineers, one from the company's Global Research Center, and two from its Aviation business, have

  14. Implementation Guide - Aviation Management, Operations, Maintenance, Security, and Safety for Use with DOE O 440.2B, Aviation Management and Safety

    Directives, Delegations, and Other Requirements [Office of Management (MA)]

    2003-07-18

    This Guide provides detailed information to help all personnel, responsible for a part of the aviation program, understand and comply with the rules and regulations applicable to their assignments. Canceled by DOE G 440.2B-2A.

  15. Aviation fuel additives. (Latest citations from the NTIS Bibliographic database). Published Search

    SciTech Connect

    Not Available

    1993-12-01

    The bibliography contains citations concerning research and development of aviation fuel additives and their effectiveness. Articles include studies on antioxidant, antimist, antistatic, lubricity, corrosion inhibition, and icing inhibition additives. Other applications are covered in investigations of additives for vulnerability reduction, thermal stability, and storage stability of aviation fuels. (Contains a minimum of 168 citations and includes a subject term index and title list.)

  16. Lightweight piston-rod assembly for a reciprocating machine

    SciTech Connect

    Corey, J.A.; Walsh, M.M.

    1986-06-10

    In a reciprocating machine, there is provided a hollow piston including a dome portion on one end and a base portion on the opposite end. The base portion includes a central bore into which a rod is hermetically fixed in radial and angular alignment. The extending end of the rod has a reduced diameter portion adapted to fit into the central bore of a second member such as a cross-head assembly, and to be secured thereto in radial and axial alignment with the piston. 4 figs.

  17. Lightweight piston-rod assembly for a reciprocating machine

    DOEpatents

    Corey, John A.; Walsh, Michael M.

    1986-01-01

    In a reciprocating machine, there is provided a hollow piston including a dome portion on one end and a base portion on the opposite end. The base portion includes a central bore into which a rod is hermetically fixed in radial and angular alignment. The extending end of the rod has a reduced diameter portion adapted to fit into the central bore of a second member such as a cross-head assembly, and to be secured thereto in radial and axial alignment with the piston.

  18. National Training Center (NTC) Launches a New DOE-Wide Voluntary Training Reciprocity and Collaboration Initiative

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Office of Health, Safety and Security's National Training Center (NTC) recently launched an exciting new DOE-wide voluntary Training Reciprocity and Collaboration initiative. Under the...

  19. Extracting Information from Narratives: An Application to Aviation Safety Reports

    SciTech Connect

    Posse, Christian; Matzke, Brett D.; Anderson, Catherine M.; Brothers, Alan J.; Matzke, Melissa M.; Ferryman, Thomas A.

    2005-05-12

    Aviation safety reports are the best available source of information about why a flight incident happened. However, stream of consciousness permeates the narratives making difficult the automation of the information extraction task. We propose an approach and infrastructure based on a common pattern specification language to capture relevant information via normalized template expression matching in context. Template expression matching handles variants of multi-word expressions. Normalization improves the likelihood of correct hits by standardizing and cleaning the vocabulary used in narratives. Checking for the presence of negative modifiers in the proximity of a potential hit reduces the chance of false hits. We present the above approach in the context of a specific application, which is the extraction of human performance factors from NASA ASRS reports. While knowledge infusion from experts plays a critical role during the learning phase, early results show that in a production mode, the automated process provides information that is consistent with analyses by human subjects.

  20. Life-Cycle Analysis of Alternative Aviation Fuels in GREET

    SciTech Connect

    Elgowainy, A.; Han, J.; Wang, M.; Carter, N.; Stratton, R.; Hileman, J.; Malwitz, A.; Balasubramanian, S.

    2012-06-01

    The Greenhouse gases, Regulated Emissions, and Energy use in Transportation (GREET) model, developed at Argonne National Laboratory, has been expanded to include well-to-wake (WTWa) analysis of aviation fuels and aircraft. This report documents the key WTWa stages and assumptions for fuels that represent alternatives to petroleum jet fuel. The aviation module in GREET consists of three spreadsheets that present detailed characterizations of well-to-pump and pump-to-wake parameters and WTWa results. By using the expanded GREET version (GREET1_2011), we estimate WTWa results for energy use (total, fossil, and petroleum energy) and greenhouse gas (GHG) emissions (carbon dioxide, methane, and nitrous oxide) for (1) each unit of energy (lower heating value) consumed by the aircraft or(2) each unit of distance traveled/ payload carried by the aircraft. The fuel pathways considered in this analysis include petroleum-based jet fuel from conventional and unconventional sources (i.e., oil sands); Fisher-Tropsch (FT) jet fuel from natural gas, coal, and biomass; bio-jet fuel from fast pyrolysis of cellulosic biomass; and bio-jet fuel from vegetable and algal oils, which falls under the American Society for Testing and Materials category of hydroprocessed esters and fatty acids. For aircraft operation, we considered six passenger aircraft classes and four freight aircraft classes in this analysis. Our analysis revealed that, depending on the feedstock source, the fuel conversion technology, and the allocation or displacement credit methodology applied to co-products, alternative bio-jet fuel pathways have the potential to reduce life-cycle GHG emissions by 55–85 percent compared with conventional (petroleum-based) jet fuel. Although producing FT jet fuel from fossil feedstock sources — such as natural gas and coal — could greatly reduce dependence on crude oil, production from such sources (especially coal) produces greater WTWa GHG emissions compared with petroleum jet

  1. Life-cycle analysis of alternative aviation fuels in GREET

    SciTech Connect

    Elgowainy, A.; Han, J.; Wang, M.; Carter, N.; Stratton, R.; Hileman, J.; Malwitz, A.; Balasubramanian, S.

    2012-07-23

    The Greenhouse gases, Regulated Emissions, and Energy use in Transportation (GREET) model, developed at Argonne National Laboratory, has been expanded to include well-to-wake (WTWa) analysis of aviation fuels and aircraft. This report documents the key WTWa stages and assumptions for fuels that represent alternatives to petroleum jet fuel. The aviation module in GREET consists of three spreadsheets that present detailed characterizations of well-to-pump and pump-to-wake parameters and WTWa results. By using the expanded GREET version (GREET1{_}2011), we estimate WTWa results for energy use (total, fossil, and petroleum energy) and greenhouse gas (GHG) emissions (carbon dioxide, methane, and nitrous oxide) for (1) each unit of energy (lower heating value) consumed by the aircraft or (2) each unit of distance traveled/ payload carried by the aircraft. The fuel pathways considered in this analysis include petroleum-based jet fuel from conventional and unconventional sources (i.e., oil sands); Fisher-Tropsch (FT) jet fuel from natural gas, coal, and biomass; bio-jet fuel from fast pyrolysis of cellulosic biomass; and bio-jet fuel from vegetable and algal oils, which falls under the American Society for Testing and Materials category of hydroprocessed esters and fatty acids. For aircraft operation, we considered six passenger aircraft classes and four freight aircraft classes in this analysis. Our analysis revealed that, depending on the feedstock source, the fuel conversion technology, and the allocation or displacement credit methodology applied to co-products, alternative bio-jet fuel pathways have the potential to reduce life-cycle GHG emissions by 55-85 percent compared with conventional (petroleum-based) jet fuel. Although producing FT jet fuel from fossil feedstock sources - such as natural gas and coal - could greatly reduce dependence on crude oil, production from such sources (especially coal) produces greater WTWa GHG emissions compared with petroleum jet

  2. Electrical Power Grid Delivery Dynamic Analysis: Using Prime Mover Engines to Balance Dynamic Wind Turbine Output

    SciTech Connect

    Diana K. Grauer; Michael E. Reed

    2011-11-01

    This paper presents an investigation into integrated wind + combustion engine high penetration electrical generation systems. Renewable generation systems are now a reality of electrical transmission. Unfortunately, many of these renewable energy supplies are stochastic and highly dynamic. Conversely, the existing national grid has been designed for steady state operation. The research team has developed an algorithm to investigate the feasibility and relative capability of a reciprocating internal combustion engine to directly integrate with wind generation in a tightly coupled Hybrid Energy System. Utilizing the Idaho National Laboratory developed Phoenix Model Integration Platform, the research team has coupled demand data with wind turbine generation data and the Aspen Custom Modeler reciprocating engine electrical generator model to investigate the capability of reciprocating engine electrical generation to balance stochastic renewable energy.

  3. A new spin on the rotary engine

    SciTech Connect

    Ashley, S.

    1995-04-01

    This article reports on a Canadian company that is trying to develop high-power, low-weight motors based on a novel axial-vane rotary engine concept. A promising new attempt at a practical rotary engine is the Rand Cam engine now being developed by Reg Technologies Inc. The Rand Cam engine is a four-stroke, positive-displacement power plant based on an axial-vane compression/expansion mechanism with only nine moving parts (eight vanes and a rotor). The new engine design uses passive ports rather than mechanically operated valves, and it features lighter-weight reciprocating parts than customary pistons. The Rand Cam operates at lower speeds than a typical Wankel engine (less than 2,000 rpm) and at higher compression ratios. Chamber sealing is accomplished using sliding axial vanes rather than the motion of an eccentric rotor.

  4. Report of the DOE-DOE Workshop on Fuel Cells in Aviation: Workshop Summary and Action Plan

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    i of 43 Page i DOD-DOE Workshop Summary and Action Plan: Fuel Cells in Aviation Table of Contents Executive Summary .............................................................................................................................................iii Drivers for Leaner, Cleaner Energy Use in Aviation .......................................................................... iv The Opportunity for Hydrogen and Fuel Cell Technologies in Aviation

  5. Rotary internal combustion engine

    SciTech Connect

    Murray, J.L.

    1993-07-20

    A multi bank power plant is described comprising at least a first and a second rotary internal combustion engine connectable together in series, each of the engines comprising: a housing; a cam track internally disposed within the housing and adapted to receive a cam follower; an engine block disposed within the housing and rotatable about a central axis; an output shaft extending axially from each the engine block, each output shaft being coaxial with the other; means for coupling the output shafts together so that the output shafts rotate together in the same direction at the same speed; at least one radially arranged cylinder assembly on each block, each cylinder assembly including a cylinder having a longitudinal axis extending generally radially outwardly from the rotational axis of the block, the cylinder including means defining an end wall, a piston member disposed within the cylinder and adapted to reciprocate within the cylinder; a combustion chamber, means permitting periodic introduction of air and fuel into the combustion chamber, means for causing combustion of a compressed mixture of air and fuel within the combustion chamber, means permitting periodic exhaust of products of combustion of air and fuel from the combustion chamber, and means for imparting forces and motions of the piston within the cylinder to and from the cam track, the means comprising a cam follower operatively connected to the piston; wherein the cam track includes at least a first segment and at least a second segment thereof, the first segment having a generally positive slope wherein the segment has a generally increasing radial distance from the rotational axis of the engine block whereby as a piston moves outwardly in a cylinder on a power stroke while the cam follower is in radial register with the cam track segment, the reactive force of the respective cam follower against the cam track segment acts in a direction tending to impart rotation to the engine block.

  6. Advanced stratified charge rotary aircraft engine design study

    SciTech Connect

    Badgley, P.; Berkowitz, M.; Jones, C.; Myers, D.

    1982-01-01

    A technology base of new developments which offered potential benefits to a general aviation engine was compiled and ranked. Using design approaches selected from the ranked list, conceptual design studies were performed of an advanced and a highly advanced engine sized to provide 186/250 shaft Kw/HP under cruise conditions at 7620/25,000 m/ft altitude. These are turbocharged, direct-injected stratified charge engines intended for commercial introduction in the early 1990's. The engine descriptive data includes tables, curves, and drawings depicting configuration, performance, weights and sizes, heat rejection, ignition and fuel injection system descriptions, maintenance requirements, and scaling data for varying power. An engine-airframe integration study of the resulting engines in advanced airframes was performed on a comparative basis with current production type engines. The results show airplane performance, costs, noise and installation factors. The rotary-engined airplanes display substantial improvements over the baseline, including 30 to 35% lower fuel usage.

  7. Variable compression ratio device for internal combustion engine

    DOEpatents

    Maloney, Ronald P.; Faletti, James J.

    2004-03-23

    An internal combustion engine, particularly suitable for use in a work machine, is provided with a combustion cylinder, a cylinder head at an end of the combustion cylinder and a primary piston reciprocally disposed within the combustion cylinder. The cylinder head includes a secondary cylinder and a secondary piston reciprocally disposed within the secondary cylinder. An actuator is coupled with the secondary piston for controlling the position of the secondary piston dependent upon the position of the primary piston. A communication port establishes fluid flow communication between the combustion cylinder and the secondary cylinder.

  8. Advanced Reciprocating Engine Systems (ARES) R&D - Cross-Cutting Technologies Enable Efficient manufacturing

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    This presentation does not contain any proprietary, confidential, or otherwise restricted information.

  9. Advanced Reciprocating Engine Systems (ARES) R&D - Cross-Cutting...

    Energy.gov [DOE] (indexed site)

    This presentation does not contain any proprietary, confidential, or otherwise restricted information.

  10. Table A2. Refiner/Reseller Prices of Aviation Fuels, Propane...

    Gasoline and Diesel Fuel Update

    - W 73.5 See footnotes at end of table. A2. RefinerReseller Prices of Aviation Fuels, Propane, and Kerosene, by PAD District, 1983-Present Energy Information Administration ...

  11. Dynamic Analysis of Electrical Power Grid Delivery: Using Prime Mover Engines to Balance Dynamic Wind Turbine Output

    SciTech Connect

    Diana K. Grauer

    2011-10-01

    This paper presents an investigation into integrated wind + combustion engine high penetration electrical generation systems. Renewable generation systems are now a reality of electrical transmission. Unfortunately, many of these renewable energy supplies are stochastic and highly dynamic. Conversely, the existing national grid has been designed for steady state operation. The research team has developed an algorithm to investigate the feasibility and relative capability of a reciprocating internal combustion engine to directly integrate with wind generation in a tightly coupled Hybrid Energy System. Utilizing the Idaho National Laboratory developed Phoenix Model Integration Platform, the research team has coupled demand data with wind turbine generation data and the Aspen Custom Modeler reciprocating engine electrical generator model to investigate the capability of reciprocating engine electrical generation to balance stochastic renewable energy.

  12. Stirling engine with pressurized crankcase

    SciTech Connect

    Corey, J.A.

    1988-08-23

    This patent describes a Stirling cycle engine comprising an engine housing which includes compression and expansion cylinders and a crankcase area; a compression piston and an expansion piston positioned in respective cylinders in the housing and coupled to a common crankshaft via bearing means. The crankshaft being positioned in the crankcase area which is defined by the pistons and the housing. The pistons includes pad means between the pistons and their respective cylinders to minimize the friction therebetween during reciprocal movement thereof; the crankcase being pressurized to inhibit the passing of working gas past the pistons; and means for cooling the crankshaft and the bearing means eliminating the need for oil in the crankcase.

  13. Implementation Guide - Aviation Management, Operations, Maintenance, Security, and Safety for Use with DOE O 440.2B Chg 1, Aviation Management and Safety

    Directives, Delegations, and Other Requirements [Office of Management (MA)]

    2008-10-17

    This Guide provides detailed information to help all personnel, responsible for a part of the aviation program, understand and comply with the rules and regulations applicable to their assignments. Cancels DOE G 440.2B-2. Canceled by DOE N 251.110.

  14. High Temperature Superconducting Reciprocating Magnetic Separator Final Report

    SciTech Connect

    James F. Maguire

    2008-06-05

    In 2001, under DOE's Superconductivity Partnership Initiative (SPI), E. I. du Pont de Nemours & Co. (Dupont) was awarded a cost-share contract to build a fully functional full-scale model high temperature superconducting reciprocating magnet unit specifically designed for the koalin clay industry. After competitive bidding, American Superconductor (AMSC) was selected to provide the coil for the magnet. Dupont performed the statement of work until September 2004, when it stopped work, with the concurrence of DOE, due to lack of federal funds. DOE had paid all invoices to that point, and Dupont had provided all cost share. At this same time, Dupont determined that this program did not fit with its corporate strategies and notified DOE that it was not interesting in resuming the program when funding became available. AMSC expressed interest in assuming performance of the Agreement to Dupont and DOE, and in March 2005, this project was transferred to AMSC by DOE amendment to the original contract and Novation Agreement between AMSC and Dupont. Design drawings and some hardware components and subassemblies were transferred to AMSC. However, no funding was obligated by DOE and AMSC never performed work on the project. This report contains a summary of the work performed by Dupont up to the September 04 timeframe.

  15. Design and development of a reciprocating low-temperature freon expander

    SciTech Connect

    Hynek, S.J.; Demler, R.L.; Harvey, A.C.; Walker, D.H.; Fuller, H.H.

    1981-01-01

    The design and development of a 20-ton refrigeration system to be powered by 140/sup 0/F waste hot water is described. The system consists of a Rankine cycle driving a reverse-Rankine cycle, integrated in that they share a common working fluid (R-22), a common condenser, and a common crankcase housing the expander and compressor. A reciprocating single-acting counterflow expander provides a combination of high efficiency in the desired capacity range, modularity, and adaptability to existing compressors. Because the temperatures and pressures of the Rankine cycle fell within the design envelope of a standard refrigeration compressor, the compressor and expander could be housed within the same crankcase by converting some of the compressor cylinders to expander cylinders by replacing the cylinder heads. The expander heads incorporate rotary valves which offer high flow coefficients; they permit higher flow areas and more straightforward flow paths than poppet valves. Rotary valve design presents little risk considering the use of compatible oil, the low operating temperatures, and close clearances that are consistent with minimal differential thermal expansion. Valve timing was optimized by a computerized finite difference technique that performed mass and energy balances and calculated flow through the valves as the crankshaft progressed incrementally. This calculation predicted that breathing losses would amount to only 13%.Thermal losses are expected to be minimal, for temperature differences are low and thermal transport properties poor. Mechanical losses are expected to be less than those of an internal combustion engine; m.e.p. is comparable, and the expander cylinder environment is less hostile to the lubricating oil.

  16. Chemical Engineering

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ARPA-E Basic Energy Sciences Materials Sciences and Engineering Chemical Sciences ... SunShot Grand Challenge: Regional Test Centers Chemical Engineering HomeTag:Chemical ...

  17. Reliability Engineering

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    LA-UR 15-27450 This document is approved for public release; further dissemination unlimited Reliability Engineering Reliability Engineering Current practice in reliability is ...

  18. Linear hydraulic drive system for a Stirling engine

    DOEpatents

    Walsh, Michael M.

    1984-02-21

    A hydraulic drive system operating from the periodic pressure wave produced by a Stirling engine along a first axis thereof and effecting transfer of power from the Stirling engine to a load apparatus therefor and wherein the movable, or working member of the load apparatus is reciprocatingly driven along an axis substantially at right angles to the first axis to achieve an arrangement of a Stirling engine and load apparatus assembly which is much shorter and the components of the load apparatus more readily accessible.

  19. Linear hydraulic drive system for a Stirling engine

    SciTech Connect

    Walsh, M.M.

    1984-02-21

    A hydraulic drive system operating from the periodic pressure wave produced by a Stirling engine along a first axis thereof and effecting transfer of power from the Stirling engine to a load apparatus therefor and wherein the movable, or working member of the load apparatus is reciprocatingly driven along an axis substantially at right angles to the first axis to achieve an arrangement of a Stirling engine and load apparatus assembly which is much shorter and the components of the load apparatus more readily accessible. 2 figs.

  20. Engineering Institute

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Education Opportunities » Engineering Institute Engineering Institute Engineering dynamics that include flight, vibration isolation for precision manufacturing, earthquake engineering, blast loading, signal processing, and experimental model analysis. Contact Leader, Los Alamos Charles Farrar Email Leader, UCSD Michael Todd Email Los Alamos Program Administrator Jutta Kayser (505) 663-5649 Email Administrative Assistant Stacy Baker (505) 663-5233 Email Collaboration for conducting

  1. ,"U.S. Aviation Gasoline Refiner Sales Volumes"

    Energy Information Administration (EIA) (indexed site)

    Aviation Gasoline Refiner Sales Volumes" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description","# Of Series","Frequency","Latest Data for" ,"Data 1","U.S. Aviation Gasoline Refiner Sales Volumes",2,"Monthly","8/2016","1/15/1983" ,"Release Date:","11/1/2016" ,"Next Release Date:","12/1/2016" ,"Excel File

  2. Stirling engines

    SciTech Connect

    Reader, G.T.; Hooper

    1983-01-01

    The Stirling engine was invented by a Scottish clergyman in 1816, but fell into disuse with the coming of the diesel engine. Advances in materials science and the energy crisis have made a hot air engine economically attractive. Explanations are full and understandable. Includes coverage of the underlying thermodynamics and an interesting historical section. Topics include: Introduction to Stirling engine technology, Theoretical concepts--practical realities, Analysis, simulation and design, Practical aspects, Some alternative energy sources, Present research and development, Stirling engine literature.

  3. Bench wear testing of engine power cylinder components

    SciTech Connect

    Patterson, D.J.; Hill, S.H.; Tung, S.C.

    1993-02-01

    A need exists for an accurate and repeatable friction and wear bench test for engine power cylinder components that more closely relates to engine test results. Current research and development includes investigation of new engine designs, materials, coatings and surface treatments for reduced weight, longer life, higher operating temperature, and reduced friction. Alternative fuels being examined include alcohols and gaseous fuels, as well as reformulated gasolines and distillate fuels. Concurrently, new lubricants are being formulated for the new engine and fuel combinations. Because of the enormous cost and time of developing commercial engine, fuel and lubricant combinations by means of engine testing alone, much interest is being focused on more representative and repeatable bench tests. This paper examines some known bench testers employing either rotary or reciprocating motion for evaluating the friction, wear, and durability of material couples. Information is presented on experience and practice with one rotary (Falex type) and two reciprocating testers (Cameron-Plint and a new design, the EMA-L59). Some correlation with engine data is given.

  4. Two phase exhaust for internal combustion engine

    SciTech Connect

    Vuk, Carl T.

    2011-11-29

    An internal combustion engine having a reciprocating multi cylinder internal combustion engine with multiple valves. At least a pair of exhaust valves are provided and each supply a separate power extraction device. The first exhaust valves connect to a power turbine used to provide additional power to the engine either mechanically or electrically. The flow path from these exhaust valves is smaller in area and volume than a second flow path which is used to deliver products of combustion to a turbocharger turbine. The timing of the exhaust valve events is controlled to produce a higher grade of energy to the power turbine and enhance the ability to extract power from the combustion process.

  5. Value Engineering

    Directives, Delegations, and Other Requirements [Office of Management (MA)]

    2002-12-30

    To establish Department of Energy (DOE) value engineering policy that establishs and maintains cost-effective value procedures and processes.

  6. Science as Art: Jet Engine Airflow | GE Global Research

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    as Art: Jet Engine Airflow Click to email this to a friend (Opens in new window) Share on Facebook (Opens in new window) Click to share (Opens in new window) Click to share on LinkedIn (Opens in new window) Click to share on Tumblr (Opens in new window) Science as Art: Jet Engine Airflow Rick Arthur 2012.10.26 Brian Mitchell is a lab manager responsible for the development of computational fluid dynamics (CFD) codes and methods that are used heavily by GE Aviation, GE Power & Water, and GE

  7. Lean NOx Trap Catalysis for Lean Natural Gas Engine Applications

    SciTech Connect

    Parks, II, James E; Storey, John Morse; Theiss, Timothy J; Ponnusamy, Senthil; Ferguson, Harley Douglas; Williams, Aaron M; Tassitano, James B

    2007-09-01

    Distributed energy is an approach for meeting energy needs that has several advantages. Distributed energy improves energy security during natural disasters or terrorist actions, improves transmission grid reliability by reducing grid load, and enhances power quality through voltage support and reactive power. In addition, distributed energy can be efficient since transmission losses are minimized. One prime mover for distributed energy is the natural gas reciprocating engine generator set. Natural gas reciprocating engines are flexible and scalable solutions for many distributed energy needs. The engines can be run continuously or occasionally as peak demand requires, and their operation and maintenance is straightforward. Furthermore, system efficiencies can be maximized when natural gas reciprocating engines are combined with thermal energy recovery for cooling, heating, and power applications. Expansion of natural gas reciprocating engines for distributed energy is dependent on several factors, but two prominent factors are efficiency and emissions. Efficiencies must be high enough to enable low operating costs, and emissions must be low enough to permit significant operation hours, especially in non-attainment areas where emissions are stringently regulated. To address these issues the U.S. Department of Energy and the California Energy Commission launched research and development programs called Advanced Reciprocating Engine Systems (ARES) and Advanced Reciprocating Internal Combustion Engines (ARICE), respectively. Fuel efficiency and low emissions are two primary goals of these programs. The work presented here was funded by the ARES program and, thus, addresses the ARES 2010 goals of 50% thermal efficiency (fuel efficiency) and <0.1 g/bhp-hr emissions of oxides of nitrogen (NOx). A summary of the goals for the ARES program is given in Table 1-1. ARICE 2007 goals are 45% thermal efficiency and <0.015 g/bhp-hr NOx. Several approaches for improving the

  8. Training Reciprocity Achieves Greater Consistency, Saves Time and Money for Idaho, Other DOE Sites

    Office of Energy Efficiency and Renewable Energy (EERE)

    IDAHO FALLS, Idaho – Contracting companies supporting EM’s cleanup program at the Idaho site volunteered to be among the first to use a new DOE training reciprocity program designed to bring more consistency to health and safety training across the complex, reduce redundancy and realize savings and other efficiencies.

  9. Reciprocal space mapping of epitaxial materials using position-sensitive x-ray detection

    SciTech Connect

    Lee, S.R.; Doyle, B.L.; Drummond, T.J.; Medernach, J.W.; Schneider, R.P. Jr.

    1994-10-01

    Reciprocal space mapping can be efficiently carried out using a position-sensitive x-ray detector (PSD) coupled to a traditional double-axis diffractometer. The PSD offers parallel measurement of the total scattering angle of all diffracted x-rays during a single rocking-curve scan. As a result, a two-dimensional reciprocal space map can be made in a very short time similar to that of a one-dimensional rocking-curve scan. Fast, efficient reciprocal space mapping offers numerous routine advantages to the x-ray diffraction analyst. Some of these advantages are the explicit differentiation of lattice strain from crystal orientation effects in strain-relaxed heteroepitaxial layers; the nondestructive characterization of the size, shape and orientation of nanocrystalline domains in ordered-alloy epilayers; and the ability to measure the average size and shape of voids in porous epilayers. Here, the PSD-based diffractometer is described, and specific examples clearly illustrating the advantages of complete reciprocal space analysis are presented.

  10. Shockwave Engine: Wave Disk Engine

    SciTech Connect

    2010-01-14

    Broad Funding Opportunity Announcement Project: MSU is developing a new engine for use in hybrid automobiles that could significantly reduce fuel waste and improve engine efficiency. In a traditional internal combustion engine, air and fuel are ignited, creating high-temperature and high-pressure gases which expand rapidly. This expansion of gases forces the engine’s pistons to pump and powers the car. MSU’s engine has no pistons. It uses the combustion of air and fuel to build up pressure within the engine, generating a shockwave that blasts hot gas exhaust into the blades of the engine’s rotors causing them to turn, which generates electricity. MSU’s redesigned engine would be the size of a cooking pot and contain fewer moving parts—reducing the weight of the engine by 30%. It would also enable a vehicle that could use 60% of its fuel for propulsion.

  11. An object-oriented approach to risk and reliability analysis : methodology and aviation safety applications.

    SciTech Connect

    Dandini, Vincent John; Duran, Felicia Angelica; Wyss, Gregory Dane

    2003-09-01

    This article describes how features of event tree analysis and Monte Carlo-based discrete event simulation can be combined with concepts from object-oriented analysis to develop a new risk assessment methodology, with some of the best features of each. The resultant object-based event scenario tree (OBEST) methodology enables an analyst to rapidly construct realistic models for scenarios for which an a priori discovery of event ordering is either cumbersome or impossible. Each scenario produced by OBEST is automatically associated with a likelihood estimate because probabilistic branching is integral to the object model definition. The OBEST methodology is then applied to an aviation safety problem that considers mechanisms by which an aircraft might become involved in a runway incursion incident. The resulting OBEST model demonstrates how a close link between human reliability analysis and probabilistic risk assessment methods can provide important insights into aviation safety phenomenology.

  12. MODELING AND PERFORMANCE EVALUATION FOR AVIATION SECURITY CARGO INSPECTION QUEUING SYSTEM

    SciTech Connect

    Allgood, Glenn O; Olama, Mohammed M; Rose, Terri A; Brumback, Daryl L

    2009-01-01

    Beginning in 2010, the U.S. will require that all cargo loaded in passenger aircraft be inspected. This will require more efficient processing of cargo and will have a significant impact on the inspection protocols and business practices of government agencies and the airlines. In this paper, we conduct performance evaluation study for an aviation security cargo inspection queuing system for material flow and accountability. The overall performance of the aviation security cargo inspection system is computed, analyzed, and optimized for the different system dynamics. Various performance measures are considered such as system capacity, residual capacity, and throughput. These metrics are performance indicators of the system s ability to service current needs and response capacity to additional requests. The increased physical understanding resulting from execution of the queuing model utilizing these vetted performance measures will reduce the overall cost and shipping delays associated with the new inspection requirements.

  13. General Engineers

    Energy Information Administration (EIA) (indexed site)

    General Engineers The U.S. Energy Information Administration (EIA) within the Department of Energy has forged a world-class information program that stresses quality, teamwork, and employee growth. In support of our program, we offer a variety of profes- sional positions, including the General Engineer, whose work is associated with analytical studies and evaluation projects pertaining to the operations of the energy industry. Responsibilities: General Engineers perform or participate in one or

  14. Engineering Institute

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Institute Engineering Institute Multidisciplinary engineering research that integrates advanced modeling and simulations, novel sensing systems and new developments in information technology. May 14, 2013 Los Alamos Research Park Los Alamos Research Park, the home of Engineering Institute Contact Institute Director Charles Farrar (505) 665-0860 Email UCSD EI Director Michael Todd (858) 534-5951 Executive Administrator Ellie Vigil (505) 667-2818 Email Administrative Assistant Rebecca Duran (505)

  15. Engineering Services

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Services Engineering Services The Network OSCARS Fasterdata IPv6 Network Network Performance Tools The ESnet Engineering Team Contact Us Technical Assistance: 1 800-33-ESnet (Inside US) 1 800-333-7638 (Inside US) 1 510-486-7600 (Globally) 1 510-486-7607 (Globally) Report Network Problems: trouble@es.net Provide Web Site Feedback: info@es.net Engineering Services ESnet provides interoperable, effective, reliable, and high performance network communications infrastructure, and certain

  16. Information engineering

    SciTech Connect

    Hunt, D.N.

    1997-02-01

    The Information Engineering thrust area develops information technology to support the programmatic needs of Lawrence Livermore National Laboratory`s Engineering Directorate. Progress in five programmatic areas are described in separate reports contained herein. These are entitled Three-dimensional Object Creation, Manipulation, and Transport, Zephyr:A Secure Internet-Based Process to Streamline Engineering Procurements, Subcarrier Multiplexing: Optical Network Demonstrations, Parallel Optical Interconnect Technology Demonstration, and Intelligent Automation Architecture.

  17. Electrical Engineer

    Energy.gov [DOE]

    (See Frequently Asked Questions for more information). Where would I be working? Western Area Power Administration Rocky Mountain Region Power System Operation Operations Engineering, (J4200) 5555...

  18. Environmental Engineer

    Energy.gov [DOE]

    A successful candidate in this position will be an environmental technical expert and advisor to integrate science and engineering principles to improve the natural environment and direct and...

  19. structured engineering

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    engineering - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy ...

  20. Systems Engineering

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering ...

  1. Rotary engine

    SciTech Connect

    Leas, A. M.; Leas, L. E.

    1985-02-12

    Disclosed are an engine system suitable for use with methyl alcohol and hydrogen and a rotary engine particularly suited for use in the engine system. The rotary engine comprises a stator housing having a plurality of radially directed chamber dividers, a principal rotor, a plurality of subordinate rotors each having an involute gear in its periphery mounted on the principal rotor, and means for rotating the subordinate rotors so that their involute gears accept the radially directed dividers as the subordinate rotors move past them.

  2. Electronics Engineer

    Energy.gov [DOE]

    This position is located in the Communications Test and Energization (TETD) organization of Commissioning and Testing (TET), Engineering and Technical Services (TE), Transmission Services (T),...

  3. Mechanical Engineer

    Energy.gov [DOE]

    This position is located in the Engineering Services (PEJD) organization of Program Implementation Energy Efficiency, Power Services, Bonneville Power Administration (BPA). As part of the Power...

  4. Fuel additives: Excluding aviation fuels. (Latest citations from the NTIS bibliographic database). Published Search

    SciTech Connect

    1995-12-01

    The bibliography contains citations concerning compositions, applications and performance of additives in fuels. Evaluations and environmental testing of additives in automotive, diesel, and boiler fuels are discussed. Additive effects on air pollution control, combustion stability, fuel economy and fuel storage are presented. Aviation fuel additives are covered in a separate bibliography. (Contains 50-250 citations and includes a subject term index and title list.) (Copyright NERAC, Inc. 1995)

  5. Fuel additives: Excluding aviation fuels. (Latest citations from the NTIS bibliographic database). Published Search

    SciTech Connect

    1995-02-01

    The bibliography contains citations concerning compositions, applications and performance of additives in fuels. Evaluations and environmental testing of additives in automotive, diesel, and boiler fuels are discussed. Additive effects on air pollution control, combustion stability, fuel economy and fuel storage are presented. Aviation fuel additives are covered in a separate bibliography. (Contains a minimum of 231 citations and includes a subject term index and title list.)

  6. Airlines and Aviation Alternative Fuels: Our Drive to Be Early Market Adopters

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Airlines & Aviation Alternative Fuels: Our Drive to Be Early Market Adopters Bioenergy 2015 Nancy N. Young, VP-Environment; CAAFI Environment Team Co-Lead June 23, 2015 Why Airlines Want Alternative Fuels airlines.org 2 » New Supply Chain * Energy Security/Supply Reliability * Competitor to Petroleum-Based Fuels » Environmental Benefit/Imperative * Greenhouse Gas (Carbon) Emissions Benefits * Reduce Emissions Affecting Local Air Quality * Do Not Induce Other Environmental Problems U.S.

  7. The Future of Biofuels: U.S. (and Global) Airlines & Aviation Alternative Fuels

    Gasoline and Diesel Fuel Update

    Biofuels: U.S. (and Global) Airlines & Aviation Alternative Fuels 2014 EIA Conference Nancy N. Young, VP-Environment July 15, 2014 Why Airlines Want Alternative Fuels airlines.org 2 » New Supply Chain * Energy Security/Supply Reliability * Competitor to Petroleum-Based Fuels » Environmental Benefit/Imperative * Greenhouse Gas (Carbon) Emissions Benefits * Reduce Emissions Affecting Local Air Quality * Do Not Induce Other Environmental Problems U.S. Airlines' Fuel Costs Are High, Volatile

  8. New Technology Demonstration of the Whole-Building Diagnostician at the Federal Aviation Administration-Denver Airport

    SciTech Connect

    Pratt, Robert G.; Bauman, Nathan N.; Katipamula, Srinivas

    2003-01-17

    This report describes results from an evaluation of the Whole Building Diagnostician's (WBD) ability to automatically and continually diagnose operational problems in building air handlers at the Federal Aviation Administration's Denver airport.

  9. Demonstration and implementation of ethanol as an aviation fuel. Final report

    SciTech Connect

    1998-01-01

    The objectives of the program were to demonstrate the viability of ethanol as an aviation fuel at appropriate locations and audiences in the participating Biomass Energy Program Regions, and to promote implementation projects in the area. Seven demonstrations were to be performed during the Summer 1995 through December 1996 period. To maximize the cost effectiveness of the program, additional corporate co-sponsorships were sought at each demonstration site and the travel schedule was arranged to take advantage of appropriate events taking place in the vicinity of the schedule events or enroute. This way, the original funded amount was stretched to cover another year of activities increasing the number of demonstrations from seven to thirty-nine. While the Renewable Aviation Fuels Development Center (RAFDC) contract focused on ethanol as an aviation fuel, RAFDC also promoted the broader use of ethanol as a transportation fuel. The paper summarizes locations and occasions, and gives a brief description of each demonstration/exhibit/presentation held during the term of the project. Most of the demonstrations took place at regularly scheduled air shows, such as the Oshkosh, Wisconsin Air Show. The paper also reviews current and future activities in the areas of certification, emission testing, the international Clean Airports Program, air pollution monitoring with instrumented aircraft powered by renewable fuels, training operation and pilot project on ethanol, turbine fuel research, and educational programs.

  10. Thermoacoustic engines

    SciTech Connect

    Swift, G.W.

    1988-10-01

    Thermoacoustic engines, or acoustic heat engines, are energy-conversion devices that achieve simplicity and concomitant reliability by use of acoustic technology. Their efficiency can be a substantial fraction of Carnot's efficiency. In thermoacoustic prime movers, heat flow from a high-temperature source to a low-temperature sink generates acoustic power (which may be converted to electric power using a transducer). In thermoacoustic heat pumps and refrigerators, acoustic power is used to pump heat from a low-temperature source to a high-temperature sink. This review teaches the fundamentals of thermoacoustic engines, by analysis, intuition, and example.

  11. Reciprocal space mapping by spot profile analyzing low energy electron diffraction

    SciTech Connect

    Meyer zu Heringdorf, Frank-J.; Horn-von Hoegen, Michael

    2005-08-15

    We present an experimental approach for the recording of two-dimensional reciprocal space maps using spot profile analyzing low energy electron diffraction (SPA-LEED). A specialized alignment procedure eliminates the shifting of LEED patterns on the screen which is commonly observed upon variation of the electron energy. After the alignment, a set of one-dimensional sections through the diffraction pattern is recorded at different energies. A freely available software tool is used to assemble the sections into a reciprocal space map. The necessary modifications of the Burr-Brown computer interface of the two Leybold and Omicron type SPA-LEED instruments are discussed and step-by-step instructions are given to adapt the SPA 4.1d software to the changed hardware. Au induced faceting of 4 deg. vicinal Si(001) is used as an example to demonstrate the technique.

  12. Effects of surface grinding conditions on the reciprocating friction and wear behavior of silicon nitride

    SciTech Connect

    Blau, P.J.; Martin, R.L.; Zanoria, E.S.

    1997-12-31

    The relationship between two significantly different surface grinding conditions and the reciprocating ball-on-flat friction and wear behavior of a high-quality, structural silicon nitride material (GS-44) was investigated. The slider materials were silicon nitride NBD 200 and 440C stainless steel. Two machining conditions were selected based on extensive machining and flexural strength test data obtained under the auspices of an international, interlaboratory grinding study. The condition categorized as {open_quotes}low strength{close_quote} grinding used a coarse 80 grit wheel and produced low flexure strength due to machining-induced flaws in the surface. The other condition, regarded as {open_quotes}high strength grinding,{close_quotes} utilized a 320 grit wheel and produced a flexural strength nearly 70% greater. Grinding wheel surface speeds were 35 and 47 m/s. Reciprocating sliding tests were conducted following the procedure described in a newly-published ASTM standard (G- 133) for linearly-reciprocating wear. Tests were performed in directions both parallel and perpendicular to the grinding marks (lay) using a 25 N load, 5 Hz reciprocating frequency, 10 mm stroke length, and 100 m of sliding at room temperature. The effects of sliding direction relative to the lay were more pronounced for stainless steel than for silicon nitride sliders. The wear of stainless steel was less than the wear of the silicon nitride slider materials because of the formation of transfer particles which covered the sharp edges of the silicon nitride grinding grooves and reduced abrasive contact. The wear of the GS-44 material was much greater for the silicon nitride sliders than for the stainless steel sliders. The causes for the effects of surface-grinding severity and sliding direction on friction and wear of GS-44 and its counterface materials are explained.

  13. Fisher information, the Hellmann-Feynman theorem, and the Jaynes reciprocity relations

    SciTech Connect

    Flego, S.P.; Plastino, A.; Plastino, A.R.

    2011-10-15

    We explore intriguing links connecting Hellmann-Feynman's theorem to a thermodynamics information-optimizing principle based on Fisher's information measure. - Highlights: > We link a purely quantum mechanical result, the Hellmann-Feynman theorem, with Jaynes' information theoretical reciprocity relations. > These relations involve the coefficients of a series expansion of the potential function. > We suggest the existence of a Legendre transform structure behind Schroedinger's equation, akin to the one characterizing thermodynamics.

  14. Combustion Engine

    Energy.gov [DOE]

    Pictured here is an animation showing the basic mechanics of how an internal combustion engine works. With support from the Energy Department, General Motors researchers developed a new technology ...

  15. Civil Engineer

    Energy.gov [DOE]

    (See Frequently Asked Questions for more information). Where would I be working? Western Area Power Administration Desert Southwest Region Engineering and Construction (G5600) 615 S. 43rd Avenue...

  16. Engineering Technician

    Energy.gov [DOE]

    (See Frequently Asked Questions for more information). Where would I be working? Western Area Power Administration Desert Southwest Region Engineering and Construction (G5600) 615 S. 43rd Avenue...

  17. General Engineer

    Energy.gov [DOE]

    This position is located in Office of Standard Contract Management, within the Office of the General Counsel (GC). The purpose of the position is to conduct technical and engineering reviews of the...

  18. Reciprocal space analysis of the microstructure of luminescent and nonluminescent porous silicon films

    SciTech Connect

    Lee, S.R.; Barbour, J.C.; Medernach, J.W.; Stevenson, J.O.; Custer, J.S.

    1994-12-31

    The microstructure of anodically prepared porous silicon films was determined using a novel X-ray diffraction technique. This technique uses double-crystal diffractometry combined with position-sensitive X- ray detection to efficiently and quantitatively image the reciprocal space structure of crystalline materials. Reciprocal space analysis of newly prepared, as well as aged, p{sup {minus}} porous silicon films showed that these films exhibit a very broad range of crystallinity. This material appears to range in structure from a strained, single-crystal, sponge-like material exhibiting long-range coherency to isolated, dilated nanocrystals embedded in an amorphous matrix. Reciprocal space analysis of n{sup +} and p{sup +} porous silicon showed these materials are strained single-crystals with a spatially-correlated array of vertical pores. The vertical pores in these crystals may be surrounded by nanoporous or nanocrystalline domains as small as a few nm in size which produce diffuse diffraction indicating their presence. The photoluminescence of these films was examined using 488 nm Ar laser excitation in order to search for possible correlations between photoluminescent intensity and crystalline microstructure.

  19. Aviation security cargo inspection queuing simulation model for material flow and accountability

    SciTech Connect

    Olama, Mohammed M; Allgood, Glenn O; Rose, Terri A; Brumback, Daryl L

    2009-01-01

    Beginning in 2010, the U.S. will require that all cargo loaded in passenger aircraft be inspected. This will require more efficient processing of cargo and will have a significant impact on the inspection protocols and business practices of government agencies and the airlines. In this paper, we develop an aviation security cargo inspection queuing simulation model for material flow and accountability that will allow cargo managers to conduct impact studies of current and proposed business practices as they relate to inspection procedures, material flow, and accountability.

  20. Panel Discussion: New Directions in Human Reliability Analysis for Oil & Gas, Cybersecurity, Nuclear, and Aviation

    SciTech Connect

    Harold S. Blackman; Ronald Boring; Julie L. Marble; Ali Mosleh; Najmedin Meshkati

    2014-10-01

    This panel will discuss what new directions are necessary to maximize the usefulness of HRA techniques across different areas of application. HRA has long been a part of Probabilistic Risk Assessment in the nuclear industry as it offers a superior standard for risk-based decision-making. These techniques are continuing to be adopted by other industries including oil & gas, cybersecurity, nuclear, and aviation. Each participant will present his or her ideas concerning industry needs followed by a discussion about what research is needed and the necessity to achieve cross industry collaboration.

  1. Integrated Combined Heat and Power/Advanced Reciprocating Internal Combustion Engine System for Landfill Gas to Power Applications

    Energy.gov [DOE]

    Landfill gas (LFG), composed largely of methane and carbon dioxide, is used in over 450 operational projects in 43 states. These projects convert a large source of greenhouse gases into a fuel that...

  2. Rotary engine

    SciTech Connect

    Meyman, U.

    1987-02-03

    A rotary engine is described comprising: two covers spaced from one another; rotors located between the covers and rotating and planetating in different phases; the rotors interengaging to form working chambers therebetween; means to supply fluid to the working chambers and means to exhaust fluid from the working chambers during the operating cycle of the engine; gearing for synchronizing rotation and planetation of the rotors and each including first and second gears arranged so that one of the gears is connected with the rotors while the other of the gears is connected with an immovable part of the engine and the gears engage with one another; carriers interconnecting the rotors and planetating in the same phase with the planetation of the rotors for synchronizing the rotation and planetation of the rotors; shafts arranged to support the carriers during their planetations; and elements for connecting the covers with one another.

  3. The effect of thermal barrier coated piston crown on engine characteristics

    SciTech Connect

    Chan, S.H.; Khor, K.A.

    2000-02-01

    While there have been numerous research papers in recent years describing the theoretical benefits obtained from the use of ceramic components in reciprocating engines, the amount of literature that describes practical results is very limited. Although successes have been reported and ceramic components are now in service in production engines, mainly for reduced in-cylinder heat rejection, many researchers have experienced failures or a drop in engine performance. This article presents the work completed on a low heat rejection engine. Extensive experiments were conducted on a three-cylinder SI Daihatsu engine with piston crowns coated with a layer of ceramic, which consisted of yttria-stabilized zirconia (YSZ). Measurement and comparison of engine performance, in particular fuel consumption, were made before and after the application of YSZ coatings deposited onto the piston crowns. The details of the cylinder pressures during the combustion process were also investigated.

  4. Psychophysiological and other factors affecting human performance in accident prevention and investigation. [Comparison of aviation with other industries

    SciTech Connect

    Klinestiver, L.R.

    1980-01-01

    Psychophysiological factors are not uncommon terms in the aviation incident/accident investigation sequence where human error is involved. It is highly suspect that the same psychophysiological factors may also exist in the industrial arena where operator personnel function; but, there is little evidence in literature indicating how management and subordinates cope with these factors to prevent or reduce accidents. It is apparent that human factors psychophysological training is quite evident in the aviation industry. However, while the industrial arena appears to analyze psychophysiological factors in accident investigations, there is little evidence that established training programs exist for supervisors and operator personnel.

  5. Value Engineering

    Directives, Delegations, and Other Requirements [Office of Management (MA)]

    2004-01-07

    To establish Department of Energy (DOE) value engineering policy that meets the requirements of Public Law 104-106, Section 4306 as codified by 41 United States Code 432. Canceled by DOE N 251.94. Does not cancel other directives.

  6. Reciprocity Checklist

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Clearance Verification Request" to the appropriate agency. The request form and appropriate fax numbers can be found at: httDs:omis.xs,ore, , 1. Is the existing clearance ...

  7. Application of proposed mutual reciprocal inspection measurement techniques to a weapon component

    SciTech Connect

    Johnson, M.W.; Frankle, C.M.; Gosnell, T.B.

    1997-04-01

    The shape-measurement technique proposed by Russian scientists for mutual reciprocal inspections (MRI) of plutonium from dismantled nuclear weapons has been applied to a US weapon component. Measurement procedures are described. Results of the measurements are {open_quotes}self-normalized{close_quotes} to remove any classified information and further renormalized to results of previous joint US/Russian measurements of an unclassified plutonium piece. Data are presented in tabular and graphical form, conforming to the method of presentation recommended by Russian experts during the previous measurements.

  8. Stirling engine control mechanism and method

    DOEpatents

    Dineen, John J.

    1983-01-01

    A reciprocating-to-rotating motion conversion and power control device for a Stirling engine includes a hub mounted on an offset portion of the output shaft for rotation relative to the shaft and for sliding motion therealong which causes the hub to tilt relative to the axis of rotation of the shaft. This changes the angle of inclination of the hub relative to the shaft axis and changes the axial stroke of a set of arms connected to the hub and nutating therewith. A hydraulic actuating mechanism is connected to the hub for moving its axial position along the shaft. A balancing wheel is linked to the hub and changes its angle of inclination as the angle of inclination of the hub changes to maintain the mechanism in perfect balance throughout its range of motion.

  9. Stirling engine control mechanism and method

    SciTech Connect

    Dineen, J.J.

    1983-02-08

    A reciprocating-to-rotating motion conversion and power control device for a Stirling engine includes a hub mounted on an offset portion of the output shaft for rotation relative to the shaft and for sliding motion therealong which causes the hub to tilt relative to the axis of rotation of the shaft. This changes the angle of inclination of the hub relative to the shaft axis and changes the axial stroke of a set of arms connected to the hub and nutating therewith. A hydraulic actuating mechanism is connected to the hub for moving its axial position along the shaft. A balancing wheel is linked to the hub and changes its angle of inclination as the angle of inclination of the hub changes to maintain the mechanism in perfect balance throughout its range of motion. 5 figs.

  10. Efficiency evaluation of the DISC (direct-injection stratified charge), DHC (dilute homogeneous charge), and DI Diesel engines (direct-injection diesel)

    SciTech Connect

    Hane, G.J.

    1983-09-01

    The thermodynamic laws governing the Otto and diesel cycle engines and the possible approaches that might be taken to increase the delivered efficiency of the reciprocating piston engine are discussed. The generic aspects of current research are discussed and typical links between research and the technical barriers to the engines' development are shown. The advanced engines are discussed individually. After a brief description of each engine and its advantages, the major technical barriers to their development are discussed. Also included for each engine is a discussion of examples of the linkages between these barriers and current combustion and thermodynamic research. For each engine a list of questions is presented that have yet to be resolved and could not be resolved within the scope of this study. These questions partially indicate the limit to the state of knowledge regarding efficiency characteristics of the advanced engine concepts. The major technical barriers to each of the engines and their ranges of efficiency improvement are summarized.

  11. Rotary engine

    SciTech Connect

    Fawcett, S.L.

    1987-03-03

    In an internal combustion engine, external heat engine, heat pump, gaseous expander, pump or gas compressor, the combustion is described including means forming a cylindrical working chamber having intake and exhaust port means for gases, and two pistons having an arcuate length within the range of 90/sup 0/ to 120/sup 0/ of the cylindrical portion of the working chamber to move toward and away from each other for compression and expansion of gases by rotation on separate concentrically-arranged shafts. A seal means is carried by the walls of the cylindrical working chamber at each of spaced apart locations to continuously form a gas sealing relation with both of the pistons while the pistons rotate toward and away from each other in the cylindrical working chamber.

  12. Rotary engine

    SciTech Connect

    Larson, T. G.

    1985-10-22

    The rotary engine has a circumferential main chamber and at least one smaller combustion chamber spaced from the main chamber. The rotor includes a plurality of radially-projecting sealing members in spaced relationship thereabout for maintaining a fluid-sealed condition along a single fixed transverse strip area on the interior surface of the main chamber. A single radially-oriented axially-parallel piston vane is also carried by the rotor and moves through the fixed strip area of the main chamber at each revolution of the rotor. Plural passages for intake, compression, expansion, and exhaust are ported into the main chamber at locations proximate to the fixed strip area. Valve means in the passages selectively open and close the same for a cycle of engine operation involving intake, compression, burning, and exhaust.

  13. Project Engineer (Nuclear/Mechanical Engineer) | Princeton Plasma...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Project Engineer (NuclearMechanical Engineer) Department: Engineering Supervisor(s): ... Its Mechanical Engineering Division (MED) is seeking to hire a NuclearMechanical Engineer ...

  14. HCCI in a Variable Compression Ratio Engine: Effects of Engine...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    in a Variable Compression Ratio Engine: Effects of Engine Variables HCCI in a Variable Compression Ratio Engine: Effects of Engine Variables 2004 Diesel Engine Emissions Reduction ...

  15. Rotary engine

    SciTech Connect

    Fawcett, S.L.

    1988-02-09

    In an internal combustion engine, external heat engine, heat pump, gaseous expander, pump or gas compressor, the combination is described including means forming a cylindrical working chamber communicating with intake and exhaust port means for gases, two pistons having an arcuate length within the range of 90/sup 0/ to 120/sup 0/ of the cylindrical surface of the working chamber. The pistons are movable toward and away from each other for compression and expansion of gases in the working chamber while separately rotating concentrically-arranged shafts, a drive shaft, three sets of gearing for connecting the pistons to the drive shaft, a first set of the gearing drivingly coupled to a first of the separate concentric shafts, a second set of the gearing drivingly coupled to a second of the concentric shaft, and a third set of the gearing comprising non-circular gears. The drive shaft is secured to one gear of each of the first, second and third gear sets of gearing for rotating the drive shaft with a substantially constant velocity and torque output throughout the several phases of the working cycle of the engine, compressor or pump.

  16. Department management of the Ross Aviation, Inc. , contract aircraft major spare parts inventory, Albuquerque, New Mexico

    SciTech Connect

    Not Available

    1991-07-26

    The purpose of this audit was to determine whether the Department of Energy's (Department) management of its contract with Ross Aviation, Inc. (Ross) provided reasonable assurance that the inventory of aircraft major spare parts at Ross was economical and efficient. The audit disclosed that approximately $447,000 (acquisition and interest carrying costs) of low-use major spare parts was excessive. Internal control deficiencies which fostered the excessive inventory included: (1) Ross had set stock levels without considering such factors as consumption or projected needs; and (2) the Department had not reviewed inventory quantities when appraising Ross' property management. The Albuquerque Operations Office (AL) agreed to take the corrective actions recommended in the report.

  17. Reciprocal regulation of LXRα activity by ASXL1 and ASXL2 in lipogenesis

    SciTech Connect

    Park, Ui-Hyun; Seong, Mi-ran; Kim, Eun-Joo; Hur, Wonhee; Kim, Sung Woo; Yoon, Seung Kew; Um, Soo-Jong

    2014-01-10

    Highlights: •ASXL1 and ASXL2 directly interact with ligand-bound LXRα. •Ligand-induced LXRα activity is repressed by ASXL1 and activated by ASXL2. •ASXL1 and ASXL2 bind to the LXRE of the LXRα target promoter. •ASXL1 and ASXL2 reciprocally regulate lipogenesis in liver cells. -- Abstract: Liver X receptor alpha (LXRα), a member of the nuclear receptor superfamily, plays a pivotal role in hepatic cholesterol and lipid metabolism, regulating the expression of genes associated with hepatic lipogenesis. The additional sex comb-like (ASXL) family was postulated to regulate chromatin function. Here, we investigate the roles of ASXL1 and ASXL2 in regulating LXRα activity. We found that ASXL1 suppressed ligand-induced LXRα transcriptional activity, whereas ASXL2 increased LXRα activity through direct interaction in the presence of the ligand. Chromatin immunoprecipitation (ChIP) assays showed ligand-dependent recruitment of ASXLs to ABCA1 promoters, like LXRα. Knockdown studies indicated that ASXL1 inhibits, while ASXL2 increases, lipid accumulation in H4IIE cells, similar to their roles in transcriptional regulation. We also found that ASXL1 expression increases under fasting conditions, and decreases in insulin-treated H4IIE cells and the livers of high-fat diet-fed mice. Overall, these results support the reciprocal role of the ASXL family in lipid homeostasis through the opposite regulation of LXRα.

  18. A reciprocal space approach for locating symmetry elements in Patterson superposition maps

    SciTech Connect

    Hendrixson, T.

    1990-09-21

    A method for determining the location and possible existence of symmetry elements in Patterson superposition maps has been developed. A comparison of the original superposition map and a superposition map operated on by the symmetry element gives possible translations to the location of the symmetry element. A reciprocal space approach using structure factor-like quantities obtained from the Fourier transform of the superposition function is then used to determine the best'' location of the symmetry element. Constraints based upon the space group requirements are also used as a check on the locations. The locations of the symmetry elements are used to modify the Fourier transform coefficients of the superposition function to give an approximation of the structure factors, which are then refined using the EG relation. The analysis of several compounds using this method is presented. Reciprocal space techniques for locating multiple images in the superposition function are also presented, along with methods to remove the effect of multiple images in the Fourier transform coefficients of the superposition map. In addition, crystallographic studies of the extended chain structure of (NHC{sub 5}H{sub 5})SbI{sub 4} and of the twinning method of the orthorhombic form of the high-{Tc} superconductor YBa{sub 2}Cu{sub 3}O{sub 7-x} are presented. 54 refs.

  19. Pressure non-uniformity and mixing characteristics in stratified-charge rotary engine combustion

    SciTech Connect

    Abraham, J.; Wey, M.J.; Bracco, F.V.

    1988-01-01

    Stratified-charge combustion in rotary engines was studied using a three-dimensional model to compute intake, compression, liquid fuel injection, combustion, expansion, and exhaust. The model was applied to two engines of different displacement and at seven operating conditions. Good agreement is found between the measured pressure and the results of previous studies. The main feature of the combustion flowfield in the two engines, the slow and nonuniform mixing of fuel and air which leads to long and incomplete combustion, is attributed at least in part to low turbulent diffusivity within the rotor pocket. The TDC diffusivity in this type of rotary engine is shown to be lower than in corresponding reciprocating engines primarily because of the longer time between intake and TDC. The model also explains pressure nonuniformities that have been experimentally observed within the combustion chamber around TDC. The nonuniformity is due to the large fluid acceleration caused by the motion of the rotor. 34 references.

  20. Stirling engine

    SciTech Connect

    Bolger, S.R.

    1992-03-17

    This patent describes an engine. It comprises at least two variable volume compartments joined by a porous medium regenerator; heat exchangers in heat exchange relationships with the variable volume compartments; a fixed quantity of gas in the compartments; a piston in each of the compartments; means to control the pistons to vary the volumes of the gas transferring between the compartments in the form of overlapping quadrilateral waveforms to compress the gas in both compartments through the same cycle pressure ratio during a cycle compression step, to shift the gas between compartments and to expand the gas in both compartments through the same cycle pressure ratio during a cycle expansion step.

  1. Ultra Clean 1.1MW High Efficiency Natural Gas Engine Powered System

    SciTech Connect

    Zurlo, James; Lueck, Steve

    2011-08-31

    Dresser, Inc. (GE Energy, Waukesha gas engines) will develop, test, demonstrate, and commercialize a 1.1 Megawatt (MW) natural gas fueled combined heat and power reciprocating engine powered package. This package will feature a total efficiency > 75% and ultra low CARB permitting emissions. Our modular design will cover the 1 – 6 MW size range, and this scalable technology can be used in both smaller and larger engine powered CHP packages. To further advance one of the key advantages of reciprocating engines, the engine, generator and CHP package will be optimized for low initial and operating costs. Dresser, Inc. will leverage the knowledge gained in the DOE - ARES program. Dresser, Inc. will work with commercial, regulatory, and government entities to help break down barriers to wider deployment of CHP. The outcome of this project will be a commercially successful 1.1 MW CHP package with high electrical and total efficiency that will significantly reduce emissions compared to the current central power plant paradigm. Principal objectives by phases for Budget Period 1 include: • Phase 1 – market study to determine optimum system performance, target first cost, lifecycle cost, and creation of a detailed product specification. • Phase 2 – Refinement of the Waukesha CHP system design concepts, identification of critical characteristics, initial evaluation of technical solutions, and risk mitigation plans. Background

  2. Soil respiration and bacterial structure and function after 17 years of a reciprocal soil transplant experiment

    DOE PAGES [OSTI]

    Bond-Lamberty, Benjamin; Bolton, Harvey; Fansler, Sarah J.; Heredia-Langner, Alejandro; Liu, Chongxuan; McCue, Lee Ann; Smith, Jeff L.; Bailey, Vanessa L.

    2016-03-02

    The effects of climate change on soil organic matter—its structure, microbial community, carbon storage, and respiration response—remain uncertain and widely debated. In addition, the effects of climate changes on ecosystem structure and function are often modulated or delayed, meaning that short-term experiments are not sufficient to characterize ecosystem responses. This study capitalized on a long-term reciprocal soil transplant experiment to examine the response of dryland soils to climate change. The two transplant sites were separated by 500 m of elevation on the same mountain slope in eastern Washington state, USA, and had similar plant species and soil types. We resampledmore » the original 1994 soil transplants and controls, measuring CO2 production, temperature response, enzyme activity, and bacterial community structure after 17 years. Over a laboratory incubation of 100 days, reciprocally transplanted soils respired roughly equal cumulative amounts of carbon as non-transplanted controls from the same site. Soils transplanted from the hot, dry, lower site to the cooler and wetter (difference of -5 °C monthly maximum air temperature, +50 mm yr-1precipitation) upper site exhibited almost no respiratory response to temperature (Q10 of 1.1), but soils originally from the upper, cooler site had generally higher respiration rates. The bacterial community structure of transplants did not differ significantly from that of untransplanted controls, however. Slight differences in local climate between the upper and lower Rattlesnake locations, simulated with environmental control chambers during the incubation, thus prompted significant differences in microbial activity, with no observed change to bacterial structure. Lastly, these results support the idea that environmental shifts can influence soil C through metabolic changes, and suggest that microbial populations responsible for soil heterotrophic respiration may be constrained in surprising ways, even

  3. Reciprocal-Space Analysis of Compositional Modulation in Short-Period Superlattices Using Position-Sensitive X-Ray Detection

    SciTech Connect

    Ahrenkiel, S.P.; Follstaedt, D.M.; Lee, S.R.; Millunchick, J.M.; Norman, A.G.; Reno, J.L.; Twesten, R.D.

    1998-11-10

    Epitaxial growth of AlAs-InAs short-period superlattices on (001) InP can lead to heterostructures exhibiting strong, quasi-periodic, lateral modulation of the alloy composition; transverse satellites arise in reciprocal space as a signature of the compositional modulation. Using an x-ray diffractometer equipped with a position-sensitive x-ray detector, we demonstrate reciprocal-space mapping of these satellites as an efficient, nondestructive means for detecting and characterizing the occurrence of compositional modulation. Systematic variations in the compositional modulation due to the structural design and the growth conditions of the short-period superlattice are characterized by routine mapping of the lateral satellites. Spontaneous compositional modulation occurs along the growth front during molecular-beam epitaxy of (AlAs) (InAs)n short-period superlattices. The modulation is quasi-periodic and forms a lateral superlattice superimposed on the intended SPS structure. Corresponding transverse satellites arise about each reciprocal lattice point, and x-ray diffraction can be routinely used to map their local reciprocal-space structure. The integrated intensity, spacing, orientation, and shape of these satellites provide a reliable means for nondestructively detecting and characterizing the compositional modulation in short-period superlattices. The analytical efficiency afforded by the use of a PSD has enabled detailed study of systematic vacations in compositional modulation as a function of the average composition, the period, and the growth rate of the short- period superlattice

  4. Rotary engine

    SciTech Connect

    Brownfield, L.A.

    1980-12-02

    The major components of this rotary engine are two equal sized rotary units, the housing containing them along with associated ignition and cooling systems. Each of the rotary units consists of a shaft, gear, two outer compressor wheels, and one center power wheel which has twice the axial thickness as the compressor wheel. All the wheels are cylindrical in shape with a lobe section comprising a 180/sup 0/ arc on the periphery of each wheel which forms an expanding and contracting volumetric chamber by means of leading and trailing lips. The lobes of the first rotary unit are situated 180/sup 0/ opposite the lobes of the second adjacent mating rotary unit, thus lobes can intermesh with its corresponding wheel.

  5. Powder-lubricant piston ring for diesel engines

    SciTech Connect

    Heshmat, H.

    1992-02-04

    This patent describes a diesel engine fueled by coal-water slurry. It comprises: a distal end including a piston head impinging upon a combustion chamber formed between the piston and a cylinder of the diesel engine; a proximal end including means for attaching the piston to a reciprocating arm means; a heat dam between the distal end and the proximal end, the heat dam including a portion of substantially decreased diameter thereby forming a debris chamber within the piston; the distal portion including a particulate return valve communicating from the debris chamber to the combustion chamber wherein residue from the coal-water slurry is returned from the debris chamber to the combustion chamber; and at least one powder-lubricated ring circumferentially extending around the piston head wherein lubricant powder is disposed between the powder-lubricant powder is disposed between the powder-lubricant ring and a wall of the cylinder.

  6. Ducted combustion chamber for direct injection engines and method

    DOEpatents

    Mueller, Charles

    2015-03-03

    An internal combustion engine includes an engine block having a cylinder bore and a cylinder head having a flame deck surface disposed at one end of the cylinder bore. A piston connected to a rotatable crankshaft and configured to reciprocate within the cylinder bore has a piston crown portion facing the flame deck surface such that a combustion chamber is defined within the cylinder bore and between the piston crown and the flame deck surface. A fuel injector having a nozzle tip disposed in fluid communication with the combustion chamber has at least one nozzle opening configured to inject a fuel jet into the combustion chamber along a fuel jet centerline. At least one duct defined in the combustion chamber between the piston crown and the flame deck surface has a generally rectangular cross section and extends in a radial direction relative to the cylinder bore substantially along the fuel jet centerline.

  7. Metabolic Engineering X Conference

    SciTech Connect

    Flach, Evan

    2015-05-07

    The International Metabolic Engineering Society (IMES) and the Society for Biological Engineering (SBE), both technological communities of the American Institute of Chemical Engineers (AIChE), hosted the Metabolic Engineering X Conference (ME-X) on June 15-19, 2014 at the Westin Bayshore in Vancouver, British Columbia. It attracted 395 metabolic engineers from academia, industry and government from around the globe.

  8. Absorption and scattering of laser radiation by the diffusion flame of aviation kerosene

    SciTech Connect

    Gvozdev, S V; Glova, A F; Dubrovskii, V Yu; Durmanov, S T; Krasyukov, A G; Lysikov, A Yu; Smirnov, G V; Solomakhin, V B

    2012-04-30

    The absorption coefficient of the radiation of a repetitively pulsed Nd : YAG laser with an average output power up to 6 W and of a cw ytterbium optical fibre laser with an output power up to 3 kW was measured in the diffusion flame of aviation kerosene burning on a free surface in the atmospheric air. The absorption coefficient as a function of flame length, radiation power, and radiation intensity, which was varied in the {approx}10{sup 3} - 5 Multiplication-Sign 10{sup 4} W cm{sup -2} range, was obtained for two distances (1 and 2 cm) between the laser beam axis and the surface. The coefficient of radiation absorption by kerosene flame was compared with that in ethanol and kerosene - ethanol mixture flames. The radiation power scattered by a small segment of the kerosene flame irradiated by Nd : YAG laser radiation was measured as a function of longitudinal and azimuthal coordinates. An estimate was made of the total scattered radiation power.

  9. ARRA FEMP Technical Assistance -- Federal Aviation Administration Project 209 -- Control Tower and Support Building, Palm Springs, CA

    SciTech Connect

    Arends, J.; Sandusky, William F.

    2010-03-31

    This report represents findings of a design review team that evaluated construction documents (at the 100% level) and operating specifications for a new control tower and support building that will be built in Palm Springs, California by the Federal Aviation Administration (FAA). The focus of the review was to identify measures that could be incorporated into the final design and operating specifications that would result in additional energy savings for the FAA that would not have otherwise occurred.

  10. Sandia Energy - HCCI/SCCI Engine Fundamentals

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    HCCISCCI Engine Fundamentals Home Transportation Energy Predictive Simulation of Engines Engine Combustion Automotive HCCISCCI Engine Fundamentals HCCISCCI Engine...

  11. Sandia Energy - HCCI/SCCI Engine Fundamentals

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    HCCISCCI Engine Fundamentals Home Transportation Energy Predictive Simulation of Engines Engine Combustion Heavy Duty HCCISCCI Engine Fundamentals HCCISCCI Engine...

  12. Study of Engine Operating Parameter Effects on GDI Engine Particle...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Study of Engine Operating Parameter Effects on GDI Engine Particle-Number Emissions Study of Engine Operating Parameter Effects on GDI Engine Particle-Number Emissions Results show ...

  13. Increased Engine Efficiency via Advancements in Engine Combustion...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Engine Efficiency via Advancements in Engine Combustion Systems Increased Engine Efficiency via Advancements in Engine Combustion Systems Presentation given at the 16th Directions...

  14. Rotary engine

    SciTech Connect

    Smith, T.A.

    1992-01-28

    This patent describes an improved rotary engine. It comprises an annular master cylinder composed of a cylindrical housing, a continuous hollow outer concentric shaft, an outward end housing and an inward end housing; means to form a dynamically balanced disc piston assembly extending from the the outward end housing to the the inward end housing thereby dividing the the annular master cylinder into at least three separate gas tight cylinders formed by rotating discs, each cylinder having at least two pistons independently rotatable therein; means to isolate the unexpanded gases from any exit path into the housing of the piston controlling means; and wherein one of the pistons in each cylinder is connected directly to the the continuous outer concentric shaft to form a first piston assembly, the other of the pistons in each cylinder is connected to the discs which are connected to the end of an inner concentric shaft to form a second piston assembly, means for controlling the piston action by a common eccentric shaft such that as the pistons rotate they expand and reduce the distance between them thereby changing the volume between the pistons within each of the cylinders.

  15. Taking an engine`s temperature

    SciTech Connect

    Allison, S.W.; Beshears, D.L.; Cates, M.R.; Noel, B.W.; Turley, W.D.

    1997-01-01

    Ceramic and ceramic-coated components will be of increasing importance in the advanced engines now under development. Ceramics enable engines to run at much higher temperatures than the superalloys in more conventional engines can. The two options for noncontact high-temperature measurements of ceramic components are pyrometry and phosphor thermometry. This article describes how when properly applied as a thin coating, thermally sensitive phosphors can monitor the temperature of ceramic surfaces inside an engine.

  16. Engine lubricating system

    SciTech Connect

    Kurio, N.; Yoshimi, H.

    1988-08-23

    This patent describes an engine lubricating system in which a measured amount of lubricating oil is supplied to the combustion chamber of an engine by a metering oil pump so that a larger amount of lubricating oil is supplied to the combustion chamber when the engine load is heavy than when the engine load is light, characterized by having a lubricating oil supply rate correction means which non-linearly increases the amount of the lubricating oil supplied to the combustion chamber with respect to engine r.p.m. so that the amount of oil supplied per unit engine revolution is greater at high engine speed than at low engine speed.

  17. Chemical & Engineering News

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ARPA-E Basic Energy Sciences Materials Sciences and Engineering Chemical Sciences ... SunShot Grand Challenge: Regional Test Centers Chemical & Engineering News Home...

  18. Reciprocal space analysis of the initial stages of strain relaxation in SiGe epilayers

    SciTech Connect

    Lee, S.R.; Floro, J.A.

    1996-01-01

    Metastable SiGe films were grown by MBE on Si (001) substrates and annealed to promote varying degrees of partial relaxation. X-ray diffraction reciprocal-space analysis was then used to monitor the structural evolution of the displacement fields of the dislocation array with increasing misfit density. The diffuse-x-ray-scattering patterns of the dislocated heterolayers were compared with lineal- misfit densities determined by defect etching, leading to the develop a geometric model which provides a framework for understanding the early-stage evolution of the displacement fields of the dislocation array, and which also explicitly links diffuse x-ray intensity to misfit density. At low misfit density, the diffuse intensity arises from two-dimensional displacement fields associated with single-nonoverlapping dislocations. As misfit density increases, the displacement fields of individual dislocations increasingly overlap producing three-dimensional displacements. The evolving diffuse intensity reflects the transition from 2-D to 3-D displacement fields. Finally, it is demonstrated that the diffuse x-ray intensity of the strained epilayer can be used to accurately measure lineal misfit- dislocation densities from 400 to 20,000 lines/cm.

  19. Tissue architecture and function: dynamic reciprocity via extra- and intra-cellular matrices

    SciTech Connect

    Xu, Ren; Boudreau, Aaron; Bissell, Mina J

    2008-12-23

    Mammary gland development, functional differentiation, and homeostasis are orchestrated and sustained by a balance of biochemical and biophysical cues from the organ's microenvironment. The three-dimensional microenvironment of the mammary gland, predominantly 'encoded' by a collaboration between the extracellular matrix (ECM), hormones, and growth factors, sends signals from ECM receptors through the cytoskeletal intracellular matrix to nuclear and chromatin structures resulting in gene expression; the ECM in turn is regulated and remodeled by signals from the nucleus. In this chapter, we discuss how coordinated ECM deposition and remodeling is necessary for mammary gland development, how the ECM provides structural and biochemical cues necessary for tissue-specific function, and the role of the cytoskeleton in mediating the extra - to intracellular dialogue occurring between the nucleus and the microenvironment. When operating normally, the cytoskeletal-mediated dynamic and reciprocal integration of tissue architecture and function directs mammary gland development, tissue polarity, and ultimately, tissue-specific gene expression. Cancer occurs when these dynamic interactions go awry for an extended time.

  20. Progress toward mutual reciprocal inspections of fissile materials from dismantled nuclear weapons

    SciTech Connect

    Johnson, M.W.; Gosnell, T.B.

    1995-08-01

    In March 1994, the United States and the Russian Federation announced their intention to conduct mutual reciprocal inspections (MRI) to confirm inventories of fissile materials from dismantled nuclear weapons. Subsequent interactions between the two countries have established the basis for an MRI regime, covering instrumentation, candidate sites for MRI, and protection of information deemed sensitive by the countries. This paper discusses progress made toward MRI, stressing measurement technologies and observables, as well as prospects for MRI implementation. An analysis is presented of observables that might be exploited to provide assurance that the material being measured could have come from a dismantled weapon rather than other sources. Instrumentation to exploit these observables will also be discussed, as will joint US/Russian efforts to demonstrate such instrumentation. Progress toward a so-called ``program of cooperation`` between the two countries in protecting each other`s sensitive information will be reviewed. All of these steps are essential components of an eventual comprehensive regime for controlling fissile materials from weapons.

  1. Tumor Engineering: The Other Face of Tissue Engineering

    SciTech Connect

    Ghajar, Cyrus M; Bissell, Mina J

    2010-03-09

    a result of heterotypic interactions between endothelium and stroma. Employing such biomimetic strategies has already led to success in cancer research. Studying tumors in 3D has proven far more accurate in reproducing in vivo growth characteristics and chemotherapeutic resistance than 2D approaches. A number of animal studies and co-culture experiments have identified also the importance of interactions with other nonmalignant cell types - such as endothelial cells, fibroblasts, adipocytes, leukocytes, and circulating progenitors - to support and sustain tumor growth, invasion, and metastasis. Reproducing not only the 'dynamic reciprocity' but also the 'dynamic cooperativity' between these constituents in a spatially, temporally, and functionally accurate fashion presents quite a challenge for engineering tumors. So, why do it? The reason is to ask important fundamental questions that cannot easily be answered in vivo or on tissue culture plastic for the reasons mentioned.

  2. Jefferson Lab Engineering

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Engineering Privacy and Security Notice Skip over navigation search JLab Engineering Please upgrade your browser. This site's design is only visible in a graphical browser that supports web standards, but its content is accessible to any browser. Concerns? Engineering Division Engineering Pressure Systems Seminars/Training print version Mechanical Systems Mechanical Engineering - Document Control Survey Alignment Machine Shop Installation/Vacuum Cryogenics Cryogenics - Cryogenics Department

  3. NTRCI Legacy Engine Research and Development Project Final Technical Report

    SciTech Connect

    Smith-Holbert, Connie; Petrolino, Joseph; Watkins, Bart; Irick, David

    2011-12-31

    The Legacy engine is a completely new design, transitional diesel engine, replacing the reciprocating engine with a rotary engine. The Legacy engine offers significant advances over conventional internal combustion engines in 1) power to weight ratio; 2) multiple fuel acceptance; 3) fuel economy; and 4) environmental compliance. These advances are achieved through a combination of innovative design geometry, rotary motion, aspiration simplicity, and manufacturing/part simplicity. The key technical challenge to the Legacy engine's commercialization, and the focus of this project, was the development of a viable roton tip seal. The PST concept for the roton tip seal was developed into a manufacturable design. The design was evaluated using a custom designed and fabricated seal test fixture and further refined. This design was incorporated into the GEN2.5A prototype and tested for achievable compression pressure. The Decision Point at the end of Phase 1 of the project (described below) was to further optimize the existing tip seal design. Enhancements to the tip seal design were incorporated into the GEN2.5B prototype and tested and evaluated using the iterative research strategy described below. Compression pressures adequate for compression ignition of diesel fuel were achieved, although not consistently in all combustion volumes. The variation in compression pressures was characterized versus design features. As the roton tip seal performance was improved, results pointed toward inadequate performance of the housing side seals. Enhancement of the housing side seal system was accomplished using a custom designed side seal test fixture. The design enhancements developed with the test fixture were also incorporated into the GEN2.5B prototype and tested and evaluated using the iterative research strategy described below. Finally, to simplify the requirements for the roton tip seals and to enhance the introduction and combustion of fuel, a flush-mount fuel injector was

  4. Reciprocal influences of temperature and copper on survival of fathead minnows, Pimephales promelas

    SciTech Connect

    Richards, V.L.; Beitinger, T.L.

    1995-08-01

    Contemporary ecological concerns of accelerated global warming, increase in toxic chemicals and loss of biodiversity make relevant studies of tolerance of various organisms to abiotic variables. In this study, the reciprocal effects of temperature and copper on survival of fathead minnows, Pimephales promelas, were determined. Temperature tolerance of fishes is limited by a cornucopia of biotic and abiotic factors, including various toxicants. Not only do chemicals affect temperature tolerance of fishes, temperature influences the sensitivity of fish to toxic chemicals; however, the relationship between temperature and lethality is complex, difficult to predict, and has not been the focus of many studies. Copper, a necessary trace element in animal metabolism and ubiquitous in aquatic environments, was selected as our test toxicant. Hodson et al. (1979) reported copper concentrations of one to 29 {mu}g/L in unpolluted surface waters in the United States. Copper sulfate (CuSO{sub 4}), is an algicide, bactericide and herbicide for ponds, lakes and fish hatcheries. Also, copper is recommended as a fungicide for a variety of ornamental plants and crops, and in various chemical forms enters the environment through mining, smelting, and refining activities. Copper is toxic in parts per billion concentrations ({mu}g/L) and is an EPA priority pollutant. In this research two null hypotheses were tested: (1) temperature has no effect on the lethality of copper sulfate, and (2) sublethal concentrations of copper do not affect the upper temperature tolerance of fathead minnows. It was found that acclimation temperature significantly affects the 96-hr median lethal concentration. Exposure to copper adversely affects the ability of minnows to withstand high temperatures. 14 refs., 3 figs.

  5. Performance of R-410A Alternative Refrigerants in a Reciprocating Compressor Designed for Air Conditioning Applications

    SciTech Connect

    Shrestha, Som S; Vineyard, Edward Allan; Mumpower, Kevin

    2016-01-01

    In response to environmental concerns raised by the use of refrigerants with high Global Warming Potential (GWP), the Air-Conditioning, Heating, and Refrigeration Institute (AHRI) has launched an industry-wide cooperative research program, referred to as the Low-GWP Alternative Refrigerants Evaluation Program (AREP), to identify and evaluate promising alternative refrigerants for major product categories. After successfully completing the first phase of the program in December 2013, AHRI launched a second phase of the Low-GWP AREP in 2014 to continue research in areas that were not previously addressed, including refrigerants in high ambient conditions, refrigerants in applications not tested in the first phase, and new refrigerants identified since testing for the program began. Although the Ozone Depletion Potential of R-410A is zero, this refrigerant is under scrutiny due to its high GWP. Several candidate alternative refrigerants have already demonstrated low global warming potential. Performance of these low-GWP alternative refrigerants is being evaluated for Air conditioning and heat pump applications to ensure acceptable system capacity and efficiency. This paper reports the results of a series of compressor calorimeter tests conducted for the second phase of the AREP to evaluate the performance of R-410A alternative refrigerants in a reciprocating compressor designed for air conditioning systems. It compares performance of alternative refrigerants ARM-71A, L41-1, DR-5A, D2Y-60, and R-32 to that of R-410A over a wide range of operating conditions. The tests showed that, in general, cooling capacities were slightly lower (except for the R-32), but energy efficiency ratios (EER) of the alternative refrigerants were comparable to that of R-410A.

  6. Internal combustion engine system having a power turbine with a broad efficiency range

    DOEpatents

    Whiting, Todd Mathew; Vuk, Carl Thomas

    2010-04-13

    An engine system incorporating an air breathing, reciprocating internal combustion engine having an inlet for air and an exhaust for products of combustion. A centripetal turbine receives products of the combustion and has a housing in which a turbine wheel is rotatable. The housing has first and second passages leading from the inlet to discrete, approximately 180.degree., portions of the circumference of the turbine wheel. The passages have fixed vanes adjacent the periphery of the turbine wheel and the angle of the vanes in one of the passages is different than those in the other so as to accommodate different power levels providing optimum approach angles between the gases passing the vanes and the blades of the turbine wheel. Flow through the passages is controlled by a flapper valve to direct it to one or the other or both passages depending upon the load factor for the engine.

  7. The Phillips Stirling engine

    SciTech Connect

    Hargreaves, C.M.

    1991-01-01

    This book is about the Stirling engine and its development from the heavy cast-iron machine of the 19th century to that of today. It is a history of a research effort spanning nearly 50 years, together with an outline of principles, and some technical details and descriptions of the more important engines. Contents include: the hot-air engine; the 20th-century revival; the Stirling cycle; rhombic-drive engines; heating and cooling; pistons and seals; electric generators and heat pumps; exotic heat sources; the engine and the environment; swashplate engines; and the past and the future.

  8. Dynamically balanced, hydraulically driven compressor/pump apparatus for resonant free piston Stirling engines

    DOEpatents

    Corey, John A.

    1984-05-29

    A compressor, pump, or alternator apparatus is designed for use with a resonant free piston Stirling engine so as to isolate apparatus fluid from the periodically pressurized working fluid of the Stirling engine. The apparatus housing has a first side closed by a power coupling flexible diaphragm (the engine working member) and a second side closed by a flexible diaphragm gas spring. A reciprocally movable piston is disposed in a transverse cylinder in the housing and moves substantially at right angles relative to the flexible diaphragms. An incompressible fluid fills the housing which is divided into two separate chambers by suitable ports. One chamber provides fluid coupling between the power diaphragm of the RFPSE and the piston and the second chamber provides fluid coupling between the gas spring diaphragm and the opposite side of the piston. The working members of a gas compressor, pump, or alternator are driven by the piston. Sealing and wearing parts of the apparatus are mounted at the external ends of the transverse cylinder in a double acting arrangement for accessibility. An annular counterweight is mounted externally of the reciprocally movable piston and is driven by incompressible fluid coupling in a direction opposite to the piston so as to damp out transverse vibrations.

  9. Dynamically balanced, hydraulically driven compressor/pump apparatus for resonant free piston Stirling engines

    SciTech Connect

    Corey, J.A.

    1984-05-29

    A compressor, pump, or alternator apparatus is designed for use with a resonant free piston Stirling engine so as to isolate apparatus fluid from the periodically pressurized working fluid of the Stirling engine. The apparatus housing has a first side closed by a power coupling flexible diaphragm (the engine working member) and a second side closed by a flexible diaphragm gas spring. A reciprocally movable piston is disposed in a transverse cylinder in the housing and moves substantially at right angles relative to the flexible diaphragms. An incompressible fluid fills the housing which is divided into two separate chambers by suitable ports. One chamber provides fluid coupling between the power diaphragm of the RFPSE and the piston and the second chamber provides fluid coupling between the gas spring diaphragm and the opposite side of the piston. The working members of a gas compressor, pump, or alternator are driven by the piston. Sealing and wearing parts of the apparatus are mounted at the external ends of the transverse cylinder in a double acting arrangement for accessibility. An annular counterweight is mounted externally of the reciprocally movable piston and is driven by incompressible fluid coupling in a direction opposite to the piston so as to damp out transverse vibrations. 6 figs.

  10. ARM - Engineering Change Request & Engineering Change Order Guidelines

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    resources, as soon as possible, when operational, science, or engineering needs require a quick engineering response where no design or redesign is required. Engineering Consultant...

  11. ARM - Engineering Work Request & Engineering Work Order Guidelines

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Work Request & Engineering Work Order Guidelines Page Contents: Introduction Discussion of the ARM Climate Research Facility Engineering Process: The Engineering Change Request ...

  12. Stirling engine power control and motion conversion mechanism

    DOEpatents

    Marks, David T.

    1983-01-01

    A motion conversion device for converting between the reciprocating motion of the pistons in a Stirling engine and the rotating motion of its output shaft, and for changing the stroke and phase of the pistons, includes a lever pivoted at one end and having a cam follower at the other end. The piston rod engages the lever intermediate its ends and the cam follower engages a cam keyed to the output shaft. The lever pivot can be moved to change the length of the moment arm defined between the cam follower and the piston rod the change the piston stroke and force exerted on the cam, and the levers can be moved in opposite directions to change the phase between pistons.

  13. Stirling engine power control and motion conversion mechanism

    SciTech Connect

    Marks, D.T.

    1983-07-12

    A motion conversion device for converting between the reciprocating motion of the pistons in a Stirling engine and the rotating motion of its output shaft, and for changing the stroke and phase of the pistons, includes a lever pivoted at one end and having a cam follower at the other end. The piston rod engages the lever intermediate its ends and the cam follower engages a cam keyed to the output shaft. The lever pivot can be moved to change the length of the moment arm defined between the cam follower and the piston rod the change the piston stroke and force exerted on the cam, and the levers can be moved in opposite directions to change the phase between pistons. 3 figs.

  14. Internal combustion engine with rotary combustion chamber

    SciTech Connect

    Hansen, C.N.; Cross, P.C.

    1986-09-23

    This patent describes an internal combustion engine comprising: a block having at least one cylindrical wall surrounding a piston chamber, piston means located in the piston chamber means operable to reciprocate the piston means in the chamber, head means mounted on the block covering the chamber. The head means has an air and fuel intake passage, and exhaust gas passage, a rotary valve assembly operatively associated with the head means for controlling the flow of air and fuel into the rotary valve assembly and piston chamber and the flow of exhaust gas from rotary valve assembly and the piston chamber. The means has a housing with a bore open to the piston chamber accommodating the rotary valve assembly, the valve assembly comprising a cylindrical sleeve located in the bore, the sleeve having an inner surface, an ignition hole, and intake and exhaust ports aligned with the intake passage and exhaust gas passage, spark generating means mounted on the housing operable to generate a spark. The rotatable valving means is located within the sleeve for controlling the flow of air and fuel into the rotary valve assembly and piston chamber and the flow of exhaust gases out of the rotary valve assembly and piston chamber.

  15. Symbiotic Engineering | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Symbiotic Engineering Jump to: navigation, search Name: Symbiotic Engineering Place: Boulder, CO Website: www.symbioticengineering.com References: Symbiotic Engineering1...

  16. ETA Engineering | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    ETA Engineering Jump to: navigation, search Logo: ETA Engineering Name: ETA Engineering Address: 4049 E. Presidio St., Suite 117 Place: Mesa, Arizona Zip: 85215 Product: renewable...

  17. RESEARCH PERSONNEL AND ENGINEERING STAFF

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Research Scientist (20%) Engineering Staff Walter Chapman, Mech. Engineer - To 93002 Greg Derrig, Senior Mechanical Engineer Lee Norris, Instr. Shop Supervisor - From 10102 ...

  18. Tomorrow's Women Engineers

    Energy.gov [DOE]

    Middle school girls in Argonne, Illinois, will meet with women engineers to work together on hands-on projects.

  19. Polymer Engineering Center

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Polymer Engineering Center University of Wisconsin-Madison Experimental and Numerical Studies of the Temperature Field in Selective Laser Sintering to Improve Shrinkage and Warpage Prediction Prof. Dr.-Ing. Natalie Rudolph Polymer Engineering Center Department of Mechanical Engineering University of Wisconsin-Madison 1513 University Ave Madison, WI 53706 Advanced Qualification of Additive Manufacturing Materials Workshop, July 20-21, 2015 in Santa Fe, NM Polymer Engineering Center University of

  20. Weapon Systems Engineering

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Systems Engineering Weapon Systems Engineering Serving the nation and our allies by providing a safe, secure, and effective stockpile Contact Us Division Leader (acting), Program Director J. Patrick Garcia Email Deputy Division Leader (acting), Stockpile Integration Jay Carnes Email Division Office (505) 606-0068 Human Resources Contacts Andrea Gonzales (505) 665-8043 Jeremy Vonharders (505) 665-5993 Careers/Jobs LANL nuclear engineer demonstrates a 3-D model Bradley Cox, a nuclear engineer

  1. Engine gaseous, aerosol precursor and particulate at simulated flight altitude conditions. Technical memo

    SciTech Connect

    Wey, C.C.

    1998-10-01

    The overall objective of the NASA Atmospheric Effects of Aviation Project (AEAP) is to develop scientific bases for assessing atmospheric impacts of the exhaust emissions by both current and future fleets of subsonic and supersonic aircraft. Among the six primary elements of the AEAP is Emissions Characterization. The objective of the Emission Characterization effort is to determine the exhaust emission constituents and concentrations at the engine exit plane. The specific objective of this engine test is to obtain a database of gaseous and particulate emissions as a function of fuel sulfur and engine operating conditions. The database of the particulate emission properties is to be used as a comparative baseline with subsequent flight measurement. The engine used in this test was a Pratt and Whitney F100-200E turbofan engine. Aviation fuel (Jet A) with a range of fuel sulfur was used. Low and high sulfur values are limited by commercially available fuels and by fuel specification limits of 0.3% by weight. Test matrix was set by parametrically varying the combustor inlet temperature (T3) between idle and maximum power setting at simulated SLS and up to five other altitudes for each fuel. Four diagnostic systems, extractive and non-intrusive, were assembled for the gaseous and particulate emissions characterization measurements study. NASA extractive system includes smoke meter and analyzers for measurement of CO, CO{sub 2}, NO, NOx, O{sub 2}, total unburnt hydrocarbons (THC), and SO{sub 2}. Particulate emissions were characterized by University of Missouri-Rolla Mobile Aerosol Sampling System.

  2. Black Pine Engineering

    Energy.gov [DOE]

    Black Pine Engineering is commercializing a disruptive technology in the turbomachinery industry. Using a patented woven composite construction, Black Pine Engineering can make turbomachines (turbines, compressors) that are cheaper and lighter than competing technologies. Using this technology, Black Pine Engineering will sell turbo-compressors which solve the problem of wasted steam in geothermal power plants.

  3. Swinging reciprocating Mach probes for the high field side scrape-off layer in DIII-D

    SciTech Connect

    Tsui, C. K.; Stangeby, P. C.; Taussig, D. A.; Watkins, M. G.; Boivin, R. L.

    2012-10-15

    A new pair of in situ reciprocating Mach probes termed swing probes has been deployed on the DIII-D centerpost for the 2012 experimental campaign. When not deployed, the entire assembly is housed in a <5 cm space underneath the centerpost tiles. This design is unique in that the probe swings vertically through the edge plasma, taking measurements along a 180 Degree-Sign arc with a 20 cm radius. The motion is powered by actuator coils that interact with the tokamak's magnetic field. Two electrodes maintain a Mach-pair orientation throughout the swing and provide measurements of saturation current, electron temperature, and parallel flow speeds up to the separatrix.

  4. Solar powered Stirling engine

    SciTech Connect

    Meijer, R.J.

    1987-11-24

    In a solar dish module which comprises a dish which receives incident solar rays and reflects them to a focus at which is located the combination of a receiver and a heat engine organized and arranged so that the heat energy of the reflected solar rays collected at the receiver powers the engine, and wherein the receiver and heat engine are supported from the dish by a framework, the improvement is described which comprises journal means for journaling at least the engine on the framework to maintain certain predetermined spatial orientation for the engine in relation to the direction of gravity irrespective of spatial orientation of the dish.

  5. Mod II engine performance

    SciTech Connect

    Richey, A.E.; Huang, S.C.

    1987-01-01

    The Automotive Stirling Engine Program (ASE) is directed at the development of a kinematic Stirling engine for automotive use. This program is sponsored by the Department of Energy (DOE) and managed by the NASA-Lewis Research Center (NASA-LeRC). Following proof-of-concept testing and development of promising performance values with early versions of the Stirling engine, a production-type automotive design, the Mod II engine, was developed. The design of this engine and its systems has been previously presented. Based on this design, the first engine has been built and development testing has started. Projections for this first engine build are presented in this paper. Results of initial tests are also given including identification of development items and formulation of plans for resolution of existing deficiencies.

  6. Engine intake system

    SciTech Connect

    Kanesaka, H.

    1989-02-07

    An intake system is described for an internal combustion engine, the system comprising: an intake passage having an intake port and an inertial supercharging intake pipe leading to the intake port; an intake valve mounted in the intake port and operatively connected to the engine for alternately opening and closing the intake port; a rotary valve operatively connected to the engine and disposed in the intake passage intermediate the inertial supercharging intake pipe and the intake port. The rotary valve is rotatable for opening and closing the intake passage, and timing adjusting means operatively connected to the engine and to the rotary valve for retarding the opening of the rotary valve relative to the opening of the intake valve at low engine speeds, and for advancing the opening of the rotary valve at high engine speeds, whereby the retarding and advancing of the opening of the rotary valve enables inertial supercharging in the intake pipe at both low and high engine speeds.

  7. Emissions characteristics of Military Helicopter Engines Fueled with JP-8 and a Fischer-Tropsch Fuel

    SciTech Connect

    Corporan, E.; DeWitt, M.; Klingshirn, Christopher D; Striebich, Richard; Cheng, Mengdawn

    2010-01-01

    The rapid growth in aviation activities and more stringent U.S. Environmental Protection Agency regulations have increased concerns regarding aircraft emissions, due to their harmful health and environmental impacts, especially in the vicinity of airports and military bases. In this study, the gaseous and particulate-matter emissions of two General Electric T701C engines and one T700 engine were evaluated. The T700 series engines power the U.S. Army's Black Hawk and Apache helicopters. The engines were fueled with standard military JP-8 fuel and were tested at three power settings. In addition, one of the T701C engines was operated on a natural-gas-derived Fischer-Tropsch synthetic paraffinic kerosene jet fuel. Test results show that the T701C engine emits significantly lower particulate-matter emissions than the T700 for all conditions tested. Particulate-matter mass emission indices ranged from 0.2-1.4 g/kg fuel for the T700 and 0.2-0.6 g/kg fuel for the T701C. Slightly higher NOx and lower CO emissions were observed for the T701C compared with the T700. Operation of the T701C with the Fischer-Tropsch fuel rendered dramatic reductions in soot emissions relative to operation on JP-8, due primarily to the lack of aromatic compounds in the alternative fuel. The Fischer-Tropsch fuel also produced smaller particles and slight reductions in CO emissions.

  8. Mechanical Engineering Department technical review

    SciTech Connect

    Carr, R.B.; Abrahamson, L.; Denney, R.M.; Dubois, B.E

    1982-01-01

    Technical achievements and publication abstracts related to research in the following Divisions of Lawrence Livermore Laboratory are reported in this biannual review: Nuclear Fuel Engineering; Nuclear Explosives Engineering; Weapons Engineering; Energy Systems Engineering; Engineering Sciences; Magnetic Fusion Engineering; and Material Fabrication. (LCL)

  9. Expanding Lorentz and spectrum corrections to large volumes of reciprocal space, for single crystal TOF neutron diffraction

    DOE PAGES [OSTI]

    Michels-Clark, Tara M; Savici, Andrei T; Lynch, Vickie E; Hoffmann, Christina; Wang, Xiaoping

    2016-01-01

    Evidence is mounting that potentially exploitable properties of technologically and chemically interesting crystalline materials are often attributed to local structure effects, which can be observed as modulated diffuse scattering (mDS) next to Bragg diffraction (BD). BD forms a regular, sparse grid of discrete points in diffraction space; traditionally, the information in each Bragg peak is extracted first by integration, followed by the application of the required corrections. In contrast, mDS covers expansive volumes of reciprocal space close to, or between, Bragg reflections. For a full measurement of the diffuse scattering, multiple instrument configurations might be required, and the same pointmore » might be measured multiple times. The common integration method is not sufficient and a new, inclusive correction-plus-intensity-extraction method is in demand. In this contribution we introduce a comprehensive data analysis approach to correct and scale the full volume of scattering data in one step. Hence, we explore data treatment and data correction that includes the complete, collected reciprocal space simultaneously, using neutron time of flight (TOF) or wavelength-resolved data, collected at the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory.« less

  10. Preliminary assessment report for Virginia Army National Guard Army Aviation Support Facility, Richmond International Airport, Installation 51230, Sandston, Virginia

    SciTech Connect

    Dennis, C.B.

    1993-09-01

    This report presents the results of the preliminary assessment (PA) conducted by Argonne National Laboratory at the Virginia Army National Guard (VaARNG) property in Sandston, Virginia. The Army Aviation Support Facility (AASF) is contiguous with the Richmond International Airport. Preliminary assessments of federal facilities are being conducted to compile the information necessary for completing preremedial activities and to provide a basis for establishing corrective actions in response to releases of hazardous substances. The PA is designed to characterize the site accurately and determine the need for further action by examining site activities, quantities of hazardous substances present, and potential pathways by which contamination could affect public health and the environment. The AASF, originally constructed as an active Air Force interceptor base, provides maintenance support for VaARNG aircraft. Hazardous materials used and stored at the facility include JP-4 jet fuel, diesel fuel, gasoline, liquid propane gas, heating oil, and motor oil.

  11. EA-2000: Proposed Land Transfer to Develop a General Aviation Airport at the East Tennessee Technology Park Heritage Center, Oak Ridge, Tennessee

    Energy.gov [DOE]

    DOE is preparing an EA to assess potential environmental impacts of the proposed land transfer to the Metropolitan Knoxville Airport Authority for the development of a general aviation airport at the East Tennessee Technology Park Heritage Center, in Oak Ridge, Tennessee.

  12. Stirling cycle rotary engine

    SciTech Connect

    Chandler, J.A.

    1988-06-28

    A Stirling cycle rotary engine for producing mechanical energy from heat generated by a heat source external to the engine, the engine including: an engine housing having an interior toroidal cavity with a central housing axis for receiving a working gas, the engine housing further having a cool as inlet port, a compressed gas outlet port, a heated compressed gas inlet port, and a hot exhaust gas outlet port at least three rotors each fixedly mounted to a respective rotor shaft and independently rotatable within the toroidal cavity about the central axis; each of the rotors including a pair of rotor blocks spaced radially on diametrically opposing sides of the respective rotor shaft, each rotor block having a radially fixed curva-linear outer surface for sealed rotational engagement with the engine housing.

  13. Fundamental Studies of Ignition Process in Large Natural Gas Engines Using Laser Spark Ignition

    SciTech Connect

    Azer Yalin; Bryan Willson

    2008-06-30

    Past research has shown that laser ignition provides a potential means to reduce emissions and improve engine efficiency of gas-fired engines to meet longer-term DOE ARES (Advanced Reciprocating Engine Systems) targets. Despite the potential advantages of laser ignition, the technology is not seeing practical or commercial use. A major impediment in this regard has been the 'open-path' beam delivery used in much of the past research. This mode of delivery is not considered industrially practical owing to safety factors, as well as susceptibility to vibrations, thermal effects etc. The overall goal of our project has been to develop technologies and approaches for practical laser ignition systems. To this end, we are pursuing fiber optically coupled laser ignition system and multiplexing methods for multiple cylinder engine operation. This report summarizes our progress in this regard. A partial summary of our progress includes: development of a figure of merit to guide fiber selection, identification of hollow-core fibers as a potential means of fiber delivery, demonstration of bench-top sparking through hollow-core fibers, single-cylinder engine operation with fiber delivered laser ignition, demonstration of bench-top multiplexing, dual-cylinder engine operation via multiplexed fiber delivered laser ignition, and sparking with fiber lasers. To the best of our knowledge, each of these accomplishments was a first.

  14. Staged combustion with piston engine and turbine engine supercharger

    DOEpatents

    Fischer, Larry E.; Anderson, Brian L.; O'Brien, Kevin C.

    2011-11-01

    A combustion engine method and system provides increased fuel efficiency and reduces polluting exhaust emissions by burning fuel in a two-stage combustion system. Fuel is combusted in a piston engine in a first stage producing piston engine exhaust gases. Fuel contained in the piston engine exhaust gases is combusted in a second stage turbine engine. Turbine engine exhaust gases are used to supercharge the piston engine.

  15. Staged combustion with piston engine and turbine engine supercharger

    DOEpatents

    Fischer, Larry E.; Anderson, Brian L.; O'Brien, Kevin C.

    2006-05-09

    A combustion engine method and system provides increased fuel efficiency and reduces polluting exhaust emissions by burning fuel in a two-stage combustion system. Fuel is combusted in a piston engine in a first stage producing piston engine exhaust gases. Fuel contained in the piston engine exhaust gases is combusted in a second stage turbine engine. Turbine engine exhaust gases are used to supercharge the piston engine.

  16. Integrated and Engineered Systems

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Integrated and Engineered Systems Integrated and Engineered Systems National security depends on science and technology. The United States relies on Los Alamos National Laboratory for the best of both. No place on Earth pursues a broader array of world-class scientific endeavors. Contact thumbnail of Business Development Executive Miranda Intrator Business Development Executive Richard P. Feynmnan Center for Innovation (505) 665-8315 Email Engineers at Los Alamos create, design, and build the

  17. Chemical Diagnostics and Engineering

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    CDE Chemical Diagnostics and Engineering We support stockpile manufacturing, surveillance, applied and basic energy sciences, threat reduction, public health, the environment, and space exploration. Contact Us Group Leader Peter Stark Deputy Group Leader Tom Yoshida Group Office (505) 667-5740 X-Ray Photoelectron Spectroscopy X-Ray Photoelectron Spectroscopy The Chemical Diagnostics and Engineering (C-CDE) Group combines engineering design with routine analytical services and state-of-the-art

  18. Systems Engineering | Wind | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Systems Engineering and Integration Systems Engineering and Integration Systems Engineering and Integration The fuel cycle in use today in the United States faces challenges in achieving the goals of sustainability. While used fuel is safely stored at reactor sites, the development of a system to manage all of the waste now and in the future has proven to be a persistently difficult task. Uncertainties about long-term resource availability make it difficult to properly value reusable material in

  19. Science & Engineering Capabilities

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Capabilities Science & Engineering Capabilities These capabilities are our science and engineering at work for the national security interest in areas from global climate to cyber security, from nonproliferation to new materials, from clean energy solutions to supercomputing. Accelerators, Electrodynamics» Energy» Materials Science» Bioscience: Bioenergy, Biosecurity, and Health» Engineering» National Security, Weapons Science» Chemical Science» High-Energy-Density Plasmas, Fluids»

  20. Explore: Mechanical Engineering

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Mechanical Engineering Explore a Career: Mechanical Engineering The work of mechanical engineers can be seen in everything from the design and fabrication of space-based custom instrumentation, to the development of new, innovative solutions for the nation's nuclear security problems. Super Cam and Chem Cam photographed to scale. Super Cam and Chem Cam photographed to scale. At Los Alamos National Laboratory, there is no shortage of challenge and career excitement for our highly skilled

  1. Electrical Engineer (Project Manager)

    Energy.gov [DOE]

    (See Frequently Asked Questions for more information). Where would I be working? Western Area Power Administration Rocky Mountain Region Maintenance, Engineering & Construction Facility...

  2. Internal Combustion Engine Basics

    Energy.gov [DOE]

    Internal combustion engines provide outstanding drivability and durability, with more than 250 million highway transportation vehicles in the United States relying on them.

  3. Recent Graduate- Electrical Engineer

    Energy.gov [DOE]

    (See Frequently Asked Questions for more information). Where would I be working? Western Area Power Administration Rocky Mountain Region Power System Operations Operations Engineering (J4200) 5555...

  4. XML Engineering Environment

    Energy Science and Technology Software Center

    2006-07-27

    The XML Engineering Environment is a reconfigurable software system that allows users to translate, enhance and route data from sources to sinks.

  5. Internet strategies for engineers

    SciTech Connect

    Hill, K.; Beruvides, M.G.

    1997-11-01

    This report contains viewgraphs on using internet strategies for engineers. How the internet is being used and what problems are being encountered are being considered.

  6. ARM - Engineering Processes

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Processes Workflow Graphic Engineering Workflow Document Tools for Workflow ECR ECO BCR Ingests Value-Added Products Reprocessing Instruments Data System Elements Field...

  7. Nuclear Power & Engineering

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Energy Defense Waste Management ...

  8. Supervisory Electrical Engineer

    Energy.gov [DOE]

    (See Frequently Asked Questions for more information). Where would I be working? Western Area Power Administration Rocky Mountain Region Maintenance, (J5640) Engineering and Construciton 5555 E....

  9. Stirling engine heating system

    SciTech Connect

    Johansson, L.N.; Houtman, W.H.; Percival, W.H.

    1988-06-28

    A hot gas engine is described wherein a working gas flows back and forth in a closed path between a relatively cooler compression cylinder side of the engine and a relatively hotter expansion cylinder side of the engine and the path contains means including a heat source and a heat sink acting upon the gas in cooperation with the compression and expansion cylinders to cause the gas to execute a thermodynamic cycle wherein useful mechanical output power is developed by the engine, the improvement in the heat source which comprises a plurality of individual tubes each forming a portion of the closed path for the working gas.

  10. SCADA Engineering Solutions

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering ...

  11. Engine and method for operating an engine

    DOEpatents

    Lauper, Jr., John Christian; Willi, Martin Leo; Thirunavukarasu, Balamurugesh; Gong, Weidong

    2008-12-23

    A method of operating an engine is provided. The method may include supplying a combustible combination of reactants to a combustion chamber of the engine, which may include supplying a first hydrocarbon fuel, hydrogen fuel, and a second hydrocarbon fuel to the combustion chamber. Supplying the second hydrocarbon fuel to the combustion chamber may include at least one of supplying at least a portion of the second hydrocarbon fuel from an outlet port that discharges into an intake system of the engine and supplying at least a portion of the second hydrocarbon fuel from an outlet port that discharges into the combustion chamber. Additionally, the method may include combusting the combustible combination of reactants in the combustion chamber.

  12. Career Map: Industrial Engineer | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Industrial Engineer Career Map: Industrial Engineer Two industrial engineers analyze data on a computer. Industrial Engineer Position Title Industrial Engineer Alternate Title(s) Production Engineer, Process Engineer, Manufacturing Engineer, Industrial Production Manager Education & Training Level Advanced, Bachelors required, prefer graduate degree Education & Training Level Description Industrial engineers should have a bachelor's degree in industrial engineering. Employers also value

  13. Career Map: Research Engineer | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Engineer Career Map: Research Engineer Two research engineers wearing safety glasses view results of an experiment. Research Engineer Position Title Research Engineer Alternate Title(s) Government Engineer, Research and Development Engineer, Basic Research Engineer, Component Researcher, Materials Engineer Education & Training Level Bachelor's degree required, prefer graduate degree Education & Training Level Description Research engineers must have a bachelor's degree. Employers value

  14. Perturbing engine performance measurements to determine optimal engine control settings

    DOEpatents

    Jiang, Li; Lee, Donghoon; Yilmaz, Hakan; Stefanopoulou, Anna

    2014-12-30

    Methods and systems for optimizing a performance of a vehicle engine are provided. The method includes determining an initial value for a first engine control parameter based on one or more detected operating conditions of the vehicle engine, determining a value of an engine performance variable, and artificially perturbing the determined value of the engine performance variable. The initial value for the first engine control parameter is then adjusted based on the perturbed engine performance variable causing the engine performance variable to approach a target engine performance variable. Operation of the vehicle engine is controlled based on the adjusted initial value for the first engine control parameter. These acts are repeated until the engine performance variable approaches the target engine performance variable.

  15. Computational Science and Engineering

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Computational Science and Engineering NETL's Computational Science and Engineering competency consists of conducting applied scientific research and developing physics-based simulation models, methods, and tools to support the development and deployment of novel process and equipment designs. Research includes advanced computations to generate information beyond the reach of experiments alone by integrating experimental and computational sciences across different length and time scales. Specific

  16. Stirling engine piston ring

    SciTech Connect

    Howarth, R.B.

    1983-12-27

    A piston ring design for a Stirling engine wherein the contact pressure between the piston and the cylinder is maintained at a uniform level, independent of engine conditions through a balancing of the pressure exerted upon the ring's surface and thereby allowing the contact pressure on the ring to be predetermined through the use of a preloaded expander ring. 2 figs.

  17. Stirling engine piston ring

    DOEpatents

    Howarth, Roy B.

    1983-01-01

    A piston ring design for a Stirling engine wherein the contact pressure between the piston and the cylinder is maintained at a uniform level, independent of engine conditions through a balancing of the pressure exerted upon the ring's surface and thereby allowing the contact pressure on the ring to be predetermined through the use of a preloaded expander ring.

  18. Engineered Natural Systems

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Engineered Natural Systems Onsite researchers at NETL develop processes, techniques, instrumentation, and relationships to collect, interpret, and disseminate data in an effort to characterize and understand the behavior of engineered natural systems. Research includes investigating theoretical and observed phenomena to support program needs and developing new concepts in the areas of analytical biogeochemistry, geology, and monitoring. Specific expertise includes: Analytical- Bio- and Geo-

  19. Engineering Division Superconducting

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    & Engineering Division Superconducting Magnet Technology for Fusion and Large Scale Applications Joseph V. Minervini Massachusetts Institute of Technology Plasma Science and Fusion Center Princeton Plasma Physics Laboratory Colloquium Princeton, NJ October 15, 2014 Technology & Engineering Division Contents * Fusion Magnets - Present and Future - Vision - State-of-the-art - New developments in superconductors * Advanced fusion magnet technology * Other large scale applications of

  20. Free piston stirling engines

    SciTech Connect

    Walker, C.

    1985-01-01

    This book presents a basic introduction to free piston Stirling engine technology through a review of specialized background material. It also includes information based on actual construction and operation experience with these machines, as well as theoretical and analytical insights into free piston Stirling engine technology.

  1. Metabolic Engineering VII Conference

    SciTech Connect

    Kevin Korpics

    2012-12-04

    The aims of this Metabolic Engineering conference are to provide a forum for academic and industrial researchers in the field; to bring together the different scientific disciplines that contribute to the design, analysis and optimization of metabolic pathways; and to explore the role of Metabolic Engineering in the areas of health and sustainability. Presentations, both written and oral, panel discussions, and workshops will focus on both applications and techniques used for pathway engineering. Various applications including bioenergy, industrial chemicals and materials, drug targets, health, agriculture, and nutrition will be discussed. Workshops focused on technology development for mathematical and experimental techniques important for metabolic engineering applications will be held for more in depth discussion. This 2008 meeting will celebrate our conference tradition of high quality and relevance to both industrial and academic participants, with topics ranging from the frontiers of fundamental science to the practical aspects of metabolic engineering.

  2. Thermoacoustic engines and refrigerators

    SciTech Connect

    Swift, G.

    1996-12-31

    This report is a transcript of a practice lecture given in preparation for a review lecture on the operation of thermoacoustic engines and refrigerators. The author begins by a brief review of the thermodynamic principles underlying the operation of thermoacoustic engines and refrigerators. Remember from thermodynamics class that there are two kinds of heat engines, the heat engine or the prime mover which produces work from heat, and the refrigerator or heat pump that uses work to pump heat. The device operates between two thermal reservoirs at temperatures T{sub hot} and T{sub cold}. In the heat engine, heat flows into the device from the reservoir at T{sub hot}, produces work, and delivers waste heat into the reservoir at T{sub cold}. In the refrigerator, work flows into the device, lifting heat Q{sub cold} from reservoir at T{sub cold} and rejecting waste heat into the reservoir at T{sub hot}.

  3. Reciprocal space XRD mapping with varied incident angle as a probe of structure variation within surface depth

    SciTech Connect

    Yang, Qiguang; Williams, Frances; Zhao, Xin; Reece, Charles E.; Krishnan, Mahadevan

    2013-09-01

    In this study, we used a differential-depth X-Ray diffraction Reciprocal Spacing Mapping (XRD RSM) technique to investigate the crystal quality of a variety of SRF-relevant Nb film and bulk materials. By choosing different X-ray probing depths, the RSM study successfully revealed evolution the of materials? microstructure after different materials processes, such as energetic condensation or surface polishing. The RSM data clearly measured the materials? crystal quality at different thickness. Through a novel differential-depth RSM technique, this study found: I. for a heteroepitaxy Nb film Nb(100)/MgO(100), the film thickening process, via a cathodic arc-discharge Nb ion deposition, created a near-perfect single crystal Nb on the surface?s top-layer; II. for a mechanically polished single-crystal bulk Nb material, the microstructure on the top surface layer is more disordered than that in-grain.

  4. Two-Stroke Engines: New Frontier in Engine Efficiency

    Energy.gov [DOE]

    Companies are revisiting two-stroke engines in the hopes of finding a new frontier in engine efficiency without the additional cost. But, not all two-stroke engines are the same.

  5. De novo apparently balanced reciprocal translocation between 5q11.2 and 17q23 associated with Klippel-Feil anomaly and type A1 brachydactyly

    SciTech Connect

    Fukushima, Yoshimitsu; Ohashi, Hirofumi; Wakui, Keiko

    1995-07-03

    We report on a girl with Klippel-Feil anomaly, type A1 brachydactyly, and minor facial anomalies. She has an apparently balanced de novo reciprocal translocation between 5q11.2 and 17q23. The possible significance of this chromosomal abnormality is discussed. 7 refs., 3 figs.

  6. Expanding Lorentz and spectrum corrections to large volumes of reciprocal space for single-crystal time-of-flight neutron diffraction

    DOE PAGES [OSTI]

    Michels-Clark, Tara M.; Savici, Andrei T.; Lynch, Vickie E.; Wang, Xiaoping; Hoffmann, Christina M.

    2016-03-01

    Evidence is mounting that potentially exploitable properties of technologically and chemically interesting crystalline materials are often attributable to local structure effects, which can be observed as modulated diffuse scattering (mDS) next to Bragg diffraction (BD). BD forms a regular sparse grid of intense discrete points in reciprocal space. Traditionally, the intensity of each Bragg peak is extracted by integration of each individual reflection first, followed by application of the required corrections. In contrast, mDS is weak and covers expansive volumes of reciprocal space close to, or between, Bragg reflections. For a representative measurement of the diffuse scattering, multiple sample orientationsmore » are generally required, where many points in reciprocal space are measured multiple times and the resulting data are combined. The common post-integration data reduction method is not optimal with regard to counting statistics. A general and inclusive data processing method is needed. In this contribution, a comprehensive data analysis approach is introduced to correct and merge the full volume of scattering data in a single step, while correctly accounting for the statistical weight of the individual measurements. Lastly, development of this new approach required the exploration of a data treatment and correction protocol that includes the entire collected reciprocal space volume, using neutron time-of-flight or wavelength-resolved data collected at TOPAZ at the Spallation Neutron Source at Oak Ridge National Laboratory.« less

  7. Internal combustion engine for natural gas compressor operation

    DOEpatents

    Hagen, Christopher L.; Babbitt, Guy; Turner, Christopher; Echter, Nick; Weyer-Geigel, Kristina

    2016-04-19

    This application concerns systems and methods for compressing natural gas with an internal combustion engine. In a representative embodiment, a system for compressing a gas comprises a reciprocating internal combustion engine including at least one piston-cylinder assembly comprising a piston configured to travel in a cylinder and to compress gas in the cylinder in multiple compression stages. The system can further comprise a first pressure tank in fluid communication with the piston-cylinder assembly to receive compressed gas from the piston-cylinder assembly until the first pressure tank reaches a predetermined pressure, and a second pressure tank in fluid communication with the piston-cylinder assembly and the first pressure tank. The second pressure tank can be configured to receive compressed gas from the piston-cylinder assembly until the second pressure tank reaches a predetermined pressure. When the first and second pressure tanks have reached the predetermined pressures, the first pressure tank can be configured to supply gas to the piston-cylinder assembly, and the piston can be configured to compress the gas supplied by the first pressure tank such that the compressed gas flows into the second pressure tank.

  8. E85 Optimized Engine

    SciTech Connect

    Bower, Stanley

    2011-12-31

    A 5.0L V8 twin-turbocharged direct injection engine was designed, built, and tested for the purpose of assessing the fuel economy and performance in the F-Series pickup of the Dual Fuel engine concept and of an E85 optimized FFV engine. Additionally, production 3.5L gasoline turbocharged direct injection (GTDI) EcoBoost engines were converted to Dual Fuel capability and used to evaluate the cold start emissions and fuel system robustness of the Dual Fuel engine concept. Project objectives were: to develop a roadmap to demonstrate a minimized fuel economy penalty for an F-Series FFV truck with a highly boosted, high compression ratio spark ignition engine optimized to run with ethanol fuel blends up to E85; to reduce FTP 75 energy consumption by 15% - 20% compared to an equally powered vehicle with a current production gasoline engine; and to meet ULEV emissions, with a stretch target of ULEV II / Tier II Bin 4. All project objectives were met or exceeded.

  9. Ionic Liquids as Novel Lubricants and Additives for Diesel Engine Applications

    SciTech Connect

    Qu, Jun; Blau, Peter Julian; Dai, Sheng; Luo, Huimin; Meyer III, Harry M

    2009-01-01

    The lubricating properties of two ionic liquids with the same anion but different cations, one ammonium IL [C8H17]3NH.Tf2N and one imidazolium IL C10mim.Tf2N, were evaluated both in neat form and as oil additives. Experiments were conducted using a standardized reciprocating sliding test using a segment of a Cr-plated diesel engine piston ring against a grey cast iron flat specimen with simulated honing marks as on the engine cylinder liner. The selected ionic liquids were benchmarked against conventional hydrocarbon oils. Substantial friction and wear reductions, up to 55% and 34%, respectively, were achieved for the neat ionic liquids compared to a fully-formulated 15W40 engine oil. Adding 5 vol% ILs into mineral oil has demonstrated significant improvement in the lubricity. One blend even outperformed the 15W40 engine oil with 9% lower friction and 34% less wear. Lubrication regime modeling, worn surface morphology examination, and surface chemical analysis were conducted to help understand the lubricating mechanisms for ionic liquids. Results suggest great potential for using ionic liquids as base lubricants or lubricant additives for diesel engine applications.

  10. Diesel engine experiments with oxygen enrichment, water addition and lower-grade fuel

    SciTech Connect

    Sekar, R.R.; Marr, W.W.; Cole, R.L.; Marciniak, T.J. ); Schaus, J.E. )

    1990-01-01

    The concept of oxygen enriched air applied to reciprocating engines is getting renewed attention in the context of the progress made in the enrichment methods and the tougher emissions regulations imposed on diesel and gasoline engines. An experimental project was completed in which a direct injection diesel engine was tested with intake oxygen levels of 21% -- 35%. Since an earlier study indicated that it is necessary to use a cheaper fuel to make the concept economically attractive, a less refined fuel was included in the test series. Since a major objection to the use of oxygen enriched combustion air had been the increase in NO{sub x} emissions, a method must be found to reduce NO{sub x}. Introduction of water into the engine combustion process was included in the tests for this purpose. Fuel emulsification with water was the means used here even though other methods could also be used. The teat data indicated a large increase in engine power density, slight improvement in thermal efficiency, significant reductions in smoke and particulate emissions and NO{sub x} emissions controllable with the addition of water. 15 refs., 10 figs., 2 tabs.

  11. The National Academies of Sciences, Engineering, and Medicine...

    Office of Environmental Management (EM)

    Global civil aviation fuel consumption, Yutko and Hansman 2011. Graphic courtesy of the ... The company's innovative technology converts household trash into low-cost, sustainable ...

  12. Heavy Truck Engine Program

    SciTech Connect

    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. Career Map: Electrical Engineer | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Electrical Engineer Career Map: Electrical Engineer Two electrical engineers inspect the electrical components to a turbine. Electrical Engineer Position Title Electrical Engineer Alternate Title(s) Electronics Engineer, Project Engineer, Power Systems, Transmission Engineer Education & Training Level Advanced, bachelor's required, prefer graduate degree Education & Training Level Description Electrical engineers must have a bachelor's degree. Employers also value practical experience,

  14. VALUE ENGINEERING.PDF

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    6 I N S P E C T I O N R E P O R T U.S. DEPARTMENT OF ENERGY OFFICE OF INSPECTOR GENERAL OFFICE OF INSPECTIONS FOLLOW-ON INSPECTION OF THE DEPARTMENT OF ENERGY'S VALUE ENGINEERING PROGRAM DECEMBER 2001 U.S. DEPARTMENT OF ENERGY Washington, DC 20585 December 20, 2001 MEMORANDUM FOR THE SECRETARY FROM: Gregory H. Friedman /s/ Inspector General SUBJECT: INFORMATION: Report on "Follow-on Inspection of the Department of Energy's Value Engineering Program" BACKGROUND Value Engineering is a

  15. Principles of models based engineering

    SciTech Connect

    Dolin, R.M.; Hefele, J.

    1996-11-01

    This report describes a Models Based Engineering (MBE) philosophy and implementation strategy that has been developed at Los Alamos National Laboratory`s Center for Advanced Engineering Technology. A major theme in this discussion is that models based engineering is an information management technology enabling the development of information driven engineering. Unlike other information management technologies, models based engineering encompasses the breadth of engineering information, from design intent through product definition to consumer application.

  16. BEW Engineering | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Services Product: BEW Engineering provides engineering consulting services, and performs research and development in electrical power systems for bulk power and distributed energy...

  17. Taitem Engineering | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Taitem Engineering Jump to: navigation, search Name: Taitem Engineering Place: Ithaca, NY Information About Partnership with NREL Partnership with NREL Yes Partnership Type "CRADA"...

  18. Pract Engineering | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Pract Engineering Jump to: navigation, search Name: Pract Engineering Address: 1150 55th Street, Suite C Place: Emeryville, California Zip: 94608 Region: Bay Area Sector: Renewable...

  19. ION Engineering | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    ION Engineering Jump to: navigation, search Name: ION Engineering Place: Boulder, Colorado Zip: 80301 Sector: Carbon Product: ION is the first clean-tech company to successfully...

  20. Nuclear Engineering | Argonne National Laboratory

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Nuclear Engineering Advancing the safe and secure use of nuclear energy Argonne's Nuclear Engineering (NE) division works to advance nuclear energy as a proven, abundant and ...

  1. Windward Engineering | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Windward Engineering Jump to: navigation, search Name: Windward Engineering Place: Spanish Fork, Utah Zip: 84660 Sector: Wind energy Product: Provides simulations, testing and...

  2. Composition-explicit distillation curves of aviation fuel JP-8 and a coal-based jet fuel

    SciTech Connect

    Beverly L. Smith; Thomas J. Bruno

    2007-09-15

    We have recently introduced several important improvements in the measurement of distillation curves for complex fluids. The modifications to the classical measurement provide for (1) a composition explicit data channel for each distillate fraction (for both qualitative and quantitative analysis); (2) temperature measurements that are true thermodynamic state points; (3) temperature, volume, and pressure measurements of low uncertainty suitable for an equation of state development; (4) consistency with a century of historical data; (5) an assessment of the energy content of each distillate fraction; (6) a trace chemical analysis of each distillate fraction; and (7) a corrosivity assessment of each distillate fraction. The most significant modification is achieved with a new sampling approach that allows precise qualitative as well as quantitative analyses of each fraction, on the fly. We have applied the new method to the measurement of rocket propellant, gasoline, and jet fuels. In this paper, we present the application of the technique to representative batches of the military aviation fuel JP-8, and also to a coal-derived fuel developed as a potential substitute. We present not only the distillation curves but also a chemical characterization of each fraction and discuss the contrasts between the two fluids. 26 refs., 5 figs., 6 tabs.

  3. Regulatory fire test requirements for plutonium air transport packages : JP-4 or JP-5 vs. JP-8 aviation fuel.

    SciTech Connect

    Figueroa, Victor G.; Lopez, Carlos; Nicolette, Vernon F.

    2010-10-01

    For certification, packages used for the transportation of plutonium by air must survive the hypothetical thermal environment specified in 10CFR71.74(a)(5). This regulation specifies that 'the package must be exposed to luminous flames from a pool fire of JP-4 or JP-5 aviation fuel for a period of at least 60 minutes.' This regulation was developed when jet propellant (JP) 4 and 5 were the standard jet fuels. However, JP-4 and JP-5 currently are of limited availability in the United States of America. JP-4 is very hard to obtain as it is not used much anymore. JP-5 may be easier to get than JP-4, but only through a military supplier. The purpose of this paper is to illustrate that readily-available JP-8 fuel is a possible substitute for the aforementioned certification test. Comparisons between the properties of the three fuels are given. Results from computer simulations that compared large JP-4 to JP-8 pool fires using Sandia's VULCAN fire model are shown and discussed. Additionally, the Container Analysis Fire (CAFE) code was used to compare the thermal response of a large calorimeter exposed to engulfing fires fueled by these three jet propellants. The paper then recommends JP-8 as an alternate fuel that complies with the thermal environment implied in 10CFR71.74.

  4. American Recovery and Reinvestment Act (ARRA) FEMP Technical Assistance Federal Aviation Administration Project 209 Control Tower and Support Building Oakland, CA

    SciTech Connect

    Arends, J.; Sandusky, William F.

    2010-03-01

    This report represents findings of a design review team that evaluated construction documents (at the 70% level) and operating specifications for a new control tower and support building that will be build at Oakland, California by the Federal Aviation Administration (FAA). The focus of the review was to identify measures that could be incorporated into the final design and operating specification that would result in additional energy savings for the FAA that would not have otherwise occurred.

  5. American Recovery and Reinvestment Act (ARRA) FEMP Technical Assistance Federal Aviation Administration Project 209 - Control Tower and Support Building, Las Vegas, NV

    SciTech Connect

    Arends, J.; Sandusky, William F.

    2010-03-31

    This report represents findings of a design review team that evaluated construction documents (at the 70% level) and operating specifications for a new control tower and support building that will be built in Las Vegas, Nevada by the Federal Aviation Administration (FAA). The focus of the review was to identify measures that could be incorporated into the final design and operating specification that would result in additional energy savings for the FAA that would not have otherwise occurred.

  6. Defining engine efficiency limits

    Energy.gov [DOE]

    Investigates the potential to reduce engine efficiency losses and how this impacts the entire system in terms of a direct increase in work output or a change in the loss mechanism.

  7. Energy Technology Engineering Center

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Energy Technology Engineering Center (ETEC) is located within Area IV of the Santa Susana Field Laboratory. The ETEC occupies 90-acres within the 290 acre site. The Santa Susana Field...

  8. INL '@work' Nuclear Engineer

    SciTech Connect

    McLean, Heather

    2008-01-01

    Heather MacLean talks about her job as a Nuclear Engineer for Idaho National Laboratory. For more information about INL careers, visit http://www.facebook.com/idahonationallaboratory.

  9. Polymer Engineering Center

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Powder bed fusion: SLS Material extrusion: FDM Directed energy depos.: AFP v v v F q ... Pfeifer, 2015 4" Polymer Engineering Center University of Wisconsin-Madison Layup on cold ...

  10. General Engineer (Project Manager)

    Energy.gov [DOE]

    (See Frequently Asked Questions for more information). Where would I be working? Western Area Power Administration Desert Southwest Region Engineering and Construction (G5600) 615 S. 43rd Avenue...

  11. Student Trainee (General Engineer)

    Energy.gov [DOE]

    This position is located in Power Services (P) of the Bonneville Power Administration (BPA). The position involves periods of pertinent formal education and periods of employment in an engineering...

  12. Displacer for Stirling engine

    SciTech Connect

    Brown, A. T.

    1985-12-24

    In a Stirling engine and the like, a displacer piston having a plurality of internal baffles and insulation so as to prevent undesired heat transfer across the displacer piston.

  13. Information Systems Engineering

    Energy.gov [DOE]

    The OCIO is dedicated to supporting the development and maintenance of DOE Department wide and site-specific software and IT systems engineering initiatives.  This webpage contains resources,...

  14. HANFORD ENGINEER WORKS

    Office of Legacy Management (LM)

    HANFORD ENGINEER WORKS IJd *P-t - - ssiticatiC+n cwcetted rat G.E. NUCLEONICS PROJECT xi I @L.%&--G-ENERAI,@ ELECTRIC z ,m ...-. I--..-. By Authority of. COMPANY . Atmic ...

  15. INL '@work' Nuclear Engineer

    ScienceCinema

    McLean, Heather

    2016-07-12

    Heather MacLean talks about her job as a Nuclear Engineer for Idaho National Laboratory. For more information about INL careers, visit http://www.facebook.com/idahonationallaboratory.

  16. Civil Engineer (Structural)

    Energy.gov [DOE]

    This position is located in Structural Design (TELD). The primary purpose of this position is to serve as a senior engineer responsible for loading, design, and analysis of all structures on BPA's...

  17. Rotary vee engine

    SciTech Connect

    Sullivan, R.W.; Holder, T.J.; Buchanan, M.F.

    1991-05-14

    This patent describes a rotary vee engine. It comprises: a housing; two cylinder blocks; angled support shaft means; an air/fuel system; angled pistons; and sealing means for sealing the combustion chamber.

  18. Section 44: Engineered Barriers

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Notice 44.8.1.2 Hydration Studies 44.8.1.3 Refinement to ... is an uncertain process, the MgO engineered barrier reduces uncertainty in the repository chemical conditions by ...

  19. Simulation-Based Engineering

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Simulation-Based Engineering Simulation-Based Engineering is focused on predicting the behavior of complex multiphase flow reactors used in fossil-energy technologies. This effort combines theory, computational modeling, experiments, and industrial input. Physics- and science-based computational models and tools are needed to support the development and deployment of advanced fossil-fuel energy devices such as gasifiers and carbon capture reactors. It is critical to develop a practical framework

  20. Internal combustion engine

    SciTech Connect

    Bernauer, O.

    1980-10-07

    An internal combustion engine is described that has walls delimiting the working space or spaces of the internal combustion engine, in which a hydrogen-impervious, encapsulated metal hydride storage device is provided which is in heat-conducting contact with these walls; the interior of the encapsulation is adapted to be selectively connected to a source of hydrogen and/or to a separate further hydrogen storage device.

  1. Liquid metal thermoacoustic engine

    SciTech Connect

    Swift, G.W.; Migliori, A.; Wheatley, J.C.

    1986-01-01

    We are studying a liquid metal thermoacoustic engine both theoretically and experimentally. This type of engine promises to produce large quantities of electrical energy from heat at modest efficiency with no moving parts. A sound wave is usually thought of as consisting of pressure oscillations, but always attendant to the pressure oscillation are temperature oscillations. The combination produces a rich variety of ''thermoacoustic'' effects. These effects are usually so small that they are never noticed in everyday life; nevertheless under the right circumstances they can be harnessed to produce powerful heat engines, heat pumps, and refrigerators. In our liquid metal thermoacoustic engine, heat flow from a high temperature source to a low temperature sink generates a high-amplitude standing acoustic wave in liquid sodium. This acoustic power is converted to electric power by a simple magnetohydrodynamic effect at the acoustic oscillation frequency. We have developed a detailed thermoacoustic theory applicable to this engine, and find that a reasonably designed liquid sodium engine operating between 700/sup 0/C and 100/sup 0/C should generate about 60 W/cm/sup 2/ of acoustic power at about 1/3 of Carnot's efficiency. Construction of a 3000 W-thermal laboratory model engine has just been completed, and we have exciting preliminary experimental results as of the time of preparation of this manuscript showing, basically, that the engine works. We have also designed and built a 1 kHz liquid sodium magnetohydrodynamic generator and have extensive measurements on it. It is now very well characterized both experimentally and theoretically. The first generator of its kind, it already converts acoustic power to electric power with 40% efficiency. 16 refs., 5 figs.

  2. Stirling engine power control

    SciTech Connect

    Fraser, J.P.

    1983-08-02

    A power control method and apparatus for a Stirling engine including a valved duct connected to the junction of the regenerator and the cooler and running to a bypass chamber connected between the heater and the cylinder. An oscillating zone of demarcation between the hot and cold portions of the working gas is established in the bypass chamber, and the engine pistons and cylinders can run cold. 3 figs.

  3. Stirling engine power control

    DOEpatents

    Fraser, James P.

    1983-01-01

    A power control method and apparatus for a Stirling engine including a valved duct connected to the junction of the regenerator and the cooler and running to a bypass chamber connected between the heater and the cylinder. An oscillating zone of demarcation between the hot and cold portions of the working gas is established in the bypass chamber, and the engine pistons and cylinders can run cold.

  4. Science, Technology & Engineering

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Alan Bishop selected to lead LANL Science, Technology & Engineering directorate August 17, 2012 LOS ALAMOS, NEW MEXICO, August 17, 2012-Los Alamos National Laboratory Director Charles McMillan announced today that after a yearlong, nationwide search, Alan Bishop has been selected to be the Laboratory's next Principal Associate Director for Science, Technology, and Engineering (PADSTE). Bishop has been acting in that role - 2 - since Aug. 29, 2011.Over the course of a distinguished 30-year

  5. NGNP Engineering Status

    SciTech Connect

    John Collins

    2010-08-01

    The objectives of Phase 1 Engineering and Design scope are to: 1) complete the initial design activities for a prototype nuclear reactor and plant that is capable of co-generating electricity, hydrogen, and process heat; 2) identify technological aspects of the NGNP that need further advancement by research and development activities; and 3) provide engineering support to the early licensing process, including technical input to white papers and developing the basis for future safety analyses.

  6. Windmills for ramjet engine

    SciTech Connect

    Giles, H.L.

    1983-01-18

    A solid fueled ramjet engine comprising solid fuel within a combustion chamber in the form of a hollow cylinder, and a windmill at the entrance to the hollow cylinder for promoting better distribution of the air, better mixing of the air and combustion gases, and more complete combustion of the solid fuel. The windmill is turned by the incoming airflow and can rotate a generator to provide a source of electrical power for the aircraft on which the engine is used.

  7. Engine systems and methods of operating an engine

    SciTech Connect

    Scotto, Mark Vincent

    2015-08-25

    One embodiment of the present invention is a unique method for operating an engine. Another embodiment is a unique engine system. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for engines and engine systems. Further embodiments, forms, features, aspects, benefits, and advantages of the present application will become apparent from the description and figures provided herewith.

  8. Career Map: Mechanical Engineer | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Mechanical Engineer Career Map: Mechanical Engineer A mechanical engineer works with a large yellow robotic arm. Mechanical Engineer Position Title Mechanical Engineer Alternate Title(s) Project Engineer, Quality Engineer, Research Engineer, Design Engineer, Sales Engineer Education & Training Level Advanced, Bachelor's degree required, prefer graduate degree Education & Training Level Description Mechanical engineers need a bachelor's degree. A graduate degree is typically needed for

  9. The Joys of Nuclear Engineering

    ScienceCinema

    Jon Carmack

    2016-07-12

    Nuclear fuels researcher Jon Carmack talks about the satisfactions of a career in nuclear engineering.

  10. Liquid-sodium thermoacoustic engine

    SciTech Connect

    Migliori, A.; Swift, G.W.

    1988-08-01

    We have constructed a thermoacoustic engine that uses liquid sodium as its working substance. The engine generates acoustic power using heat flowing from a high-temperature source to a low-temperature sink. The measured performance of this engine disagrees significantly with numerical calculations based on our theory of thermoacoustic engines. The efficiency of the engine is a substantial fraction of Carnot's efficiency, and its power density is comparable to that of the conventional heat engines in widespread use. Thus we expect this type of engine to be of practical, economic importance.

  11. International combustion engines; Applied thermosciences

    SciTech Connect

    Ferguson, C.R.

    1985-01-01

    Focusing on thermodynamic analysis - from the requisite first law to more sophisticated applications - and engine design, this book is an introduction to internal combustion engines and their mechanics. It covers the many types of internal combustion engines, including spark ignition, compression ignition, and stratified charge engines, and examines processes, keeping equations of state simple by assuming constant specific heats. Equations are limited to heat engines and later applied to combustion engines. Topics include realistic equations of state, stroichiometry, predictions of chemical equilibrium, engine performance criteria, and friction, which is discussed in terms of the hydrodynamic theory of lubrication and experimental methods such as dimensional analysis.

  12. Software engineering and graphical programming languages

    SciTech Connect

    Jefferson, K.; Porter, T.; West, T.

    1997-11-01

    This report contains viewgraphs on software engineering and adapting engineering processes to a graphical programming languages.

  13. Single rotor turbine engine

    DOEpatents

    Platts, David A.

    2002-01-01

    There has been invented a turbine engine with a single rotor which cools the engine, functions as a radial compressor, pushes air through the engine to the ignition point, and acts as an axial turbine for powering the compressor. The invention engine is designed to use a simple scheme of conventional passage shapes to provide both a radial and axial flow pattern through the single rotor, thereby allowing the radial intake air flow to cool the turbine blades and turbine exhaust gases in an axial flow to be used for energy transfer. In an alternative embodiment, an electric generator is incorporated in the engine to specifically adapt the invention for power generation. Magnets are embedded in the exhaust face of the single rotor proximate to a ring of stationary magnetic cores with windings to provide for the generation of electricity. In this alternative embodiment, the turbine is a radial inflow turbine rather than an axial turbine as used in the first embodiment. Radial inflow passages of conventional design are interleaved with radial compressor passages to allow the intake air to cool the turbine blades.

  14. Ceramic Automotive Stirling Engine Program

    SciTech Connect

    Not Available

    1986-08-01

    The Ceramic Automotive Stirling Engine Program evaluated the application of advanced ceramic materials to an automotive Stirling engine. The objective of the program was to evaluate the technical feasibility of utilizing advanced ceramics to increase peak engine operating temperature, and to evaluate the performance benefits of such an increase. Manufacturing cost estimates were also developed for various ceramic engine components and compared with conventional metallic engine component costs.

  15. Visual Engineering | The Ames Laboratory

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Visual Engineering Visual Engineering At the Ames Laboratory we are working with Iowa State Image University to create an interactive visual engineering environment to design new products, better power plants, or any other engineering products. In addition, Mark Bryden and Doug McCorkle, along with collaborators at NETL and Reaction Engineering International have developed open-source software to look at the physics behind power plant operation within this visual environment. Image Their VE-PSI

  16. Externally heated valve engine -- An alternative to the Stirling engine

    SciTech Connect

    Kazimierski, Z.; Brzeski, L.

    1996-12-31

    A new concept of the Externally Heated Valve (EHV) engine is presented. The principle of the engine operation is described in the introduction to the paper. Heat delivered to the working medium (air) in the heater, or several heaters working commutatively, can come from a combustion chamber or other heat generator such as nuclear reactors or solar collectors. The engine construction is original entirely different from the well-known Stirling engine. New results of the EHV engine computer modeling are presented. This is connected with a new kind of the annular heater applied to the EHV engine. A whirl motion inside the heater is caused to ensure the proper condition of the heat exchanger during the whole engine cycle. Three heaters working commutatively have been considered in this model. Comparisons between the power and efficiency of the Stirling engine and EHV engine have been performed for the same engine capacity, rotational frequency, maximum and minimum temperatures of the working gas and for the same mean pressures of both the engine cycles. The power of the EHV engine is in this case over three times higher than the Stirling engine power, while the efficiency of both the engines is almost the same.

  17. Free-piston engine

    DOEpatents

    Van Blarigan, Peter

    2001-01-01

    A combustion system which can utilize high compression ratios, short burn durations, and homogeneous fuel/air mixtures in conjunction with low equivalence ratios. In particular, a free-piston, two-stroke autoignition internal combustion engine including an electrical generator having a linear alternator with a double-ended free piston that oscillates inside a closed cylinder is provided. Fuel and air are introduced in a two-stroke cycle fashion on each end, where the cylinder charge is compressed to the point of autoignition without spark plugs. The piston is driven in an oscillating motion as combustion occurs successively on each end. This leads to rapid combustion at almost constant volume for any fuel/air equivalence ratio mixture at very high compression ratios. The engine is characterized by high thermal efficiency and low NO.sub.x emissions. The engine is particularly suited for generating electrical current in a hybrid automobile.

  18. Needle Federated Search Engine

    Energy Science and Technology Software Center

    2009-12-01

    The Idaho National Laboratory (INL) has combined a number of technologies, tools, and resources to accomplish a new means of federating search results. The resulting product is a search engine called Needle, an open-source-based tool that the INL uses internally for researching across a wide variety of information repositories. Needle has a flexible search interface that allows end users to point at any available data source. A user can select multiple sources such as commercialmore » databases (Web of Science, Engineering Index), external resources (WorldCat, Google Scholar), and internal corporate resources (email, document management system, library collections) in a single interface with one search query. In the future, INL hopes to offer this open-source engine to the public. This session will outline the development processes for making Needle™s search interface and simplifying the federation of internal and external data sources.« less

  19. Career Map: Design Engineer | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Design Engineer Career Map: Design Engineer A product designer watches as several engineers work on a wind turbine component. Design Engineer Position Title Design Engineer Alternate Title(s) Materials Engineer, Composite Engineer, Product Designer, Structural Engineer Education & Training Level Bachelor's degree required, graduate degree preferred Education & Training Level Description Design engineers typically hold a bachelor's degree or higher in electrical or mechanical engineering

  20. Rotary engine research

    SciTech Connect

    Not Available

    1992-06-01

    A development history is presented for NASA's 1983-1991 Rotary Engine Enablement Program, emphasizing the CFD approaches to various problems that were instituted from 1987 to the end of the program. In phase I, a test rig was built to intensively clarify and characterize the stratified-charge rotary engine concept. In phase II, a high pressure, electronically controlled fuel injection system was tested. In phase III, the testing of improved fuel injectors led to the achievement of the stipulated 5 hp/cu inch specific power goal. CFD-aided design of advanced rotor-pocket shapes led to additional performance improvements.

  1. Background review on compressors for gas engine-driven heat pumps. Technical report, September 1985-March 1986

    SciTech Connect

    Hall, R.L.; Swain, J.C.

    1986-04-01

    The investigation focused on the efficiency and durability of various types of open-shaft compressors for potential application to residential and light commercial gas-engine-driven heat-pump applications. Variable speed efficiency data for hermetic, semihermetic, and open shaft compressors were obtained from the public literature and from compressor manufacturers in the US, Japan, and in Europe. Efficiency comparisons based upon refrigerants R12 and R22 at a fixed compressor pressure ratio indicate that reciprocating compressors have the highest coefficients of performance (COP's) for compressor speeds ranging from 1000 to 2500 rpm. Scroll and Wankel compressors appear to offer the highest COP's above 2500 rpm. An important finding of the work is that open shaft compressors with proven life and reliability for residential gas engine heat-pump applications do not appear to be available as production units.

  2. Tiger Team assessment of the Idaho National Engineering Laboratory

    SciTech Connect

    McKenzie, Barbara J.; West, Stephanie G.; Jones, Olga G.; Kerr, Dorothy A.; Bieri, Rita A.; Sanderson, Nancy L.

    1991-08-01

    The purpose of the Safety and Health (S H) Subteam assessment was to determine the effectiveness of representative safety and health programs at the Idaho National Engineering Laboratory (INEL) site. Four Technical Safety Appraisal (TSA) Teams were assembled for this purpose by the US Department of Energy (DOE), Deputy Assistant Secretary for Safety and Quality Assurance, Office of Safety Appraisals (OSA). Team No. 1 reviewed EG G Idaho, Inc. (EG G Idaho) and the Department of Energy Field Office, Idaho (ID) Fire Department. Team No. 2 reviewed Argonne National Laboratory-West (ANL-W). Team No. 3 reviewed selected contractors at the INEL; specifically, Morrison Knudsen-Ferguson of Idaho Company (MK-FIC), Protection Technology of Idaho, Inc. (PTI), Radiological and Environmental Sciences Laboratory (RESL), and Rockwell-INEL. Team No. 4 provided an Occupational Safety and Health Act (OSHA)-type compliance sitewide assessment of INEL. The S H Subteam assessment was performed concurrently with assessments conducted by Environmental and Management Subteams. Performance was appraised in the following technical areas: Organization and Administration, Quality Verification, Operations, Maintenance, Training and Certification, Auxiliary Systems, Emergency Preparedness, Technical Support, Packaging and Transportation, Nuclear Criticality Safety, Security/Safety Interface, Experimental Activities, Site/Facility Safety Review, Radiological Protection, Personnel Protection, Worker Safety and Health (OSHA) Compliance, Fire Protection, Aviation Safety, Medical Services, and Firearms Safety.

  3. Starting of turbine engines

    SciTech Connect

    Shekleton, J.R.

    1990-05-01

    This patent describes a relatively small turbine engine. It comprises: a rotary turbine wheel; a rotary compressor coupled to the turbine wheel; an annular combustor for receiving air from the compressor and fuel from a fuel source combusting the same and providing gases of combustion to the turbine wheel to drive the same; substantially identical main fuel injectors including fuel injecting nozzles angularly spaced about the compressor; fuel and air from the compressor being introduced into the combustor generally in the tangential direction; a fuel pump; a control schedule valve; and first and second main fuel solenoid valves. The first valve being operable to connect a minority of the injectors to the control schedule valve and the fuel pump for starting the engine, there being an even number of the injectors and the minority of injectors consisting of two diametrically opposite injectors; the first and second valves being operable to connect all of the injectors to the control schedule valve and the pump for causing normal operation of the engine; the engine further being characterized by the absence of start fuel injectors for the combustor.

  4. Rotary internal combustion engine

    SciTech Connect

    Le, L.K.

    1990-11-20

    This patent describes an internal combustion engine comprising; a rotary compressor mechanism; a rotary expander mechanism; and combustion chamber means disposed between the compressor mechanism and the expander mechanism, whereby compressed air is delivered to the combustion chamber through the compressor discharge port, and pressurized gas is delivered from the combustion chamber into the expander mechanism through the pressurized gas intake port.

  5. Engineering Annual Summary 1996

    SciTech Connect

    Dimolitsas, S.

    1997-04-30

    Fiscal year 1996 has been a year of significant change for the Lawrence Livermore National Laboratory (LLNL) in general and for Engineering in particular. Among these changes, the Laboratory`s national security mission was better defined, the stockpile stewardship program objectives became crisper, LLNL`s investment in high-performance computing was re-emphasized with the procurement of a $100 million supercomputer for the Laboratory`s Accelerated Strategic Computing Initiative (ASCI) program, two major Laser programs (the National Ignition Facility and Atomic Vapor Laser Isotope Separation) expanded significantly, and DOE`s human genome efforts moved to the next phase of development. In the area of business operations, LLNL`s Cost Cutting Initiative Program (CCIP) was completed and the Laboratory restructured its workforce using a Voluntary Separation Incentive Program (VSIP). Engineering similarly also saw many technical and programmatic successes, as well as changes, starting with completion of its strategic plan, significant consolidation of its facilities, restructuring of its workforce, reduction of its overhead costs, substantial transfers of staff between programs, and finally my personal arrival at Livermore. This report is the first opportunity to capture some of Engineering`s FY96 activities and accomplishments in a succinct fashion, and to relate these to our strategic plan.

  6. Internal combustion engine

    SciTech Connect

    Perrin, G.; Bergmann, H.

    1984-06-12

    An externally auto-ignited four-stroke internal combustion engine which includes a combustion chamber disposed in an upper surface of a piston such that, in an upper dead-center position of the piston, the combustion chamber receives almost all of the fuel-air mixture. The combustion chamber includes a planar bottom portion and has a cross-sectional shape of a truncated cone expanding in a direction of the cylinder head. The internal combustion engine also includes a recess or depression provided in the cylinder head and disposed eccentrically with respect to a longitudinal center axis of the cylinder. The depression or recess in the cylinder head has the shape of a truncated cone expanding in a direction of the piston, with a spark plug projecting or penetrating into the recess or depression in the cylinder head. In order to enable the achievement of good combustion, increased overall engine performance, and the minimum amount of harmful components in the exhaust gases from the engine when different types of fuel are used, predetermined constructional parameters are selected with respect to the combustion chamber and recess or depression disposed above the combustion chamber as well as the disposition of the combustion chamber with respect to a longitudinal center axis of the cylinder.

  7. Thermoacoustic engines and refrigerators

    SciTech Connect

    Swift, G.W.

    1995-07-01

    We ordinarily think of a sound wave in a gas as consisting of coupled pressure and displacement oscillations. However, temperature oscillations always accompany the pressure changes. The combination of all these oscillations, and their interaction with solid boundaries, produces a rich variety of `thermoacoustic` effects. Although these effects as they occur in every-day life are too small to be noticed, one can harness extremely loud sound waves in acoustically sealed chambers to produce powerful heat engines, heat pumps and refrigerators. Whereas typical engines and refrigerators have crankshaft-coupled pistons or rotating turbines, thermoacoustic engines and refrigerators have at most a single flexing moving part (as in a loudspeaker) with no sliding seals. Thermoacoustic devices may be of practical use where simplicity, reliability or low cost is more important than the highest efficiency (although one cannot say much more about their cost-competitiveness at this early stage). This paper discusses the fundamentals of thermoacoustic engines and refrigerators, research in this field, and their commercial development. 16 refs., 5 figs.

  8. Diesel Engine Idling Test

    SciTech Connect

    Larry Zirker; James Francfort; Jordon Fielding

    2006-02-01

    In support of the Department of Energy’s FreedomCAR and Vehicle Technology Program Office goal to minimize diesel engine idling and reduce the consumption of millions of gallons of diesel fuel consumed during heavy vehicle idling periods, the Idaho National Laboratory (INL) conducted tests to characterize diesel engine wear rates caused by extended periods of idling. INL idled two fleet buses equipped with Detroit Diesel Series 50 engines, each for 1,000 hours. Engine wear metals were characterized from weekly oil analysis samples and destructive filter analyses. Full-flow and the bypass filter cartridges were removed at four stages of the testing and sent to an oil analysis laboratory for destructive analysis to ascertain the metals captured in the filters and to establish wear rate trends. Weekly samples were sent to two independent oil analysis laboratories. Concurrent with the filter analysis, a comprehensive array of other laboratory tests ascertained the condition of the oil, wear particle types, and ferrous particles. Extensive ferrogram testing physically showed the concentration of iron particles and associated debris in the oil. The tests results did not show the dramatic results anticipated but did show wear trends. New West Technologies, LLC, a DOE support company, supplied technical support and data analysis throughout the idle test.

  9. Rotary engine cooling system

    SciTech Connect

    Jones, C.

    1988-07-26

    A rotary internal combustion engine is described comprising: a rotor housing forming a trochoidal cavity therein; an insert of refractory material received in the recess, an element of a fuel injection and ignition system extending through the housing and insert bores, and the housing having cooling passages extending therethrough. The cooling passages are comprised of drilled holes.

  10. Clinton Engineer Works map | Y-12 National Security Complex

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Clinton Engineer Works map Clinton Engineer Works map

  11. Supervisory Interdisciplinary Civil Engineer/Electrical Engineer (0810/0850)

    Energy.gov [DOE]

    THIS IS AN INTERDISCIPLINARY POSITION AND MAY BE FILLED WITH ANY OF THE FOLLOWING OCCUPATIONS: Supervisory Civil Engineer, GS-0810-15 Supervisory Electrical Engineer, GS-0850-15 This position is...

  12. Automotive Stirling Engine Development Program Mod I Stirling engine development

    SciTech Connect

    Simetkosky, M.A.

    1983-08-01

    The Automotive Stirling Engine (ASE) Development Program was established to enable research and development of alternate propulsion systems. The program was awarded to Mechanical Technology Incorporated (MTI) for the purpose of developing an automotive Stirling engine, and transferring Stirling-engine technology to the United States. MTI has fabricated and tested four Mod I engines that have accumulated over 1900 test hours to date. The engines evaluated in the test cell have achieved an average of 34.5% efficiency at their maximum efficiency point (2000 rpm), and have developed an average maximum output power (power available to the drive train) level of 54.4 kW (73.2 bhp). All engines are still operating, and are being used to develop components and control strategy for the Upgraded Mod I engine design (predicted to increase maximum power output and efficiency while reducing total engine system weight).

  13. Analysis of an industrial cogeneration unit driven by a gas engine. Part 1: Experimental testing under full and part-load operating conditions

    SciTech Connect

    De Lucia, M.; Lanfranchi, C.

    1994-12-31

    This paper describes and analyzes an industrial cogeneration plant driven by a gas fueled reciprocating engine installed in a textile factory. It presents the results of experimental testing conducted under full and part-load operating conditions, as well as first-law energy considerations. The experimental tests conducted on the cogeneration unit proved the validity of the plant design and also enabled evaluation of part-load performance, which is the most common operating mode in cogeneration plants in the small-size industries which typical of central Italy.

  14. Launching Renewable Aviation Fuels

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Bulk Fuel Purchases / Farm to Fleet * Rocky Mountain/ West Coast bulk fuels contract awarded for fuel delivery starting December 2015 awarded 77.6 MM gallons of F-76 with 10% synthetic fuels content (142 MM gallons total F-76) - Covers San Diego, Bremerton, Hawaii - Synthetic fuel supplied by AltAir (Paramount, CA) using the HEFA process - Provides the fuel for RIMPAC 2016 - Solicitation for deliveries starting 1 October 2016 recently closed * Inland/ East/ Gulf Coast solicitation recently

  15. American Recovery and Reinvestment Act (ARRA) FEMP Technical Assistance Federal Aviation Administration – Project 209 Control Tower and Support Building, Reno, Nevada

    SciTech Connect

    Arends, J.; Sandusky, William F.

    2010-06-30

    Pacific Northwest National Laboratory (PNNL) and Redhorse Corporation (Redhorse) conducted an energy audit on the Federal Aviation Administration (FAA) control tower and base building in Reno, Nevada. This report presents the findings of the energy audit team that evaluated construction documents and operating specifications (at the 100% level) and completed a site visit. The focus of the review was to identify measures that could be incorporated into the final design and operating specifications that would result in additional energy savings for the FAA that would not have otherwise occurred.

  16. American Recovery and Reinvestment Act (ARRA) - FEMP Technical Assistance - Federal Aviation Administration - Project 209 - Control Tower and Support Building, Boise, Idaho

    SciTech Connect

    Arends, J.; Sandusky, William F.

    2010-06-28

    This report documents an energy audit performed by Pacific Northwest National Laboratory (PNNL) and Redhorse Corporation (Redhorse) conducted on the Federal Aviation Administration (FAA) control tower and base building in Boise, Idaho. This report presents findings of the energy audit team that evaluated construction documents and operating specifications (at the 100% level) followed by a site visit of the facility under construction. The focus of the review was to identify measures that could be incorporated into the final design and operating specifications that would result in additional energy savings for FAA that would not have otherwise occurred.

  17. Career Map: Aerospace Engineer | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Aerospace Engineer Career Map: Aerospace Engineer An aerospace engineer stands in front of a drivetrain testing machine. Aerospace Engineer Position Title Aerospace Engineer Alternate Title(s) Aeronautical Engineer Education & Training Level Advanced, Bachelor's required, prefer graduate degree Education & Training Level Description Aerospace engineers must have a bachelor's degree in aerospace engineering or another field of engineering or science related to aerospace systems. Brief job

  18. Career Map: Project Engineer | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Project Engineer Career Map: Project Engineer project_engineer.jpg Project Engineer Position Title Project Engineer Alternate Title(s) Construction Engineer, Project Development Engineer Education & Training Level Advanced, Bachelors required Education & Training Level Description Project engineers usually have a bachelor's degree in mechanical, aerospace or electrical engineering. They may also have a degree in other technical disciplines or construction management. Employers also value

  19. Internal combustion engine utilizing stratified charge combustion process

    SciTech Connect

    Artman, N.G.

    1991-07-16

    This patent describes an internal combustion engine in which a piston is reciprocal alternately toward and from the upper end of a cylinder within a variable volume space adjacent to such end, a cylinder head having a face in closing relation with such cylinder end and containing a precombustion chamber with a sidewall having an inner periphery constructed about an axis extending upwardly from the cylinder and the periphery having an open lower end in two-way communication through the face with the variable volume space, the lower open end being smaller in diameter than the diameter of the cylinder, the upper end of the chamber having an air inlet passage closable by a valve, the chamber being operable when the valve is open and attendant to movement of the piston downwardly from the upper cylinder end to receive from the inlet passage a main inlet air stream and conduct the same downwardly therein and discharge the same through the open end downwardly therein and discharge the same through the open end downwardly into the variable volume space.

  20. Electrical Engineer | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Electrical Engineer Electrical Engineer Submitted by admin on Mon, 2016-10-31 00:16 Job Summary Organization Name Department Of Energy Agency SubElement Western Area Power ...

  1. Argonne National Laboratory's Omnivorous Engine

    ScienceCinema

    Thomas Wallner

    2010-01-08

    Why can't an engine run on any fuel? Argonne is designing an omnivorous engine that can run on any blend of gasoline, ethanol or butanol?and calibrate itself to burn that fuel most efficiently.

  2. Sandia Engineer at Heliostat Field

    Energy.gov [DOE]

    This photograph features Clifford Ho, an engineer at Sandia National Laboratories, who stands below Sandia's solar heliostat field. The Chinese Institute of Engineers-USA selected Ho as its Asian...

  3. Supercharging system for automotive engines

    SciTech Connect

    Yamada, T.; Yabuhara, H.; Takimoto, F.

    1988-03-15

    A supercharging system for an automotive engine is described comprising: a turbocharger driven by exhaust-gas of the engine; a supercharger; an intake passage connecting the turbocharger and the supercharger in series, for supplying air to the engine; driving means for driving the supercharger by the engine; clutch means provided in the driving means; a first bypass provided around the supercharger; a control valve provided in the first bypass; a second bypass provided around the turbine of the turbocharger; a waste gate valve provided in the second bypass; a first actuator for operating the control valve; a second actuator for operating the waste gate valve; first means for operating the second actuator to open the waste gate valve when supercharging pressure exceeds a predetermined value; an engine speed sensor for detecting speed of the engine; an engine load sensor for detecting load on the engine; and a control unit.

  4. Free-piston Stirling engine

    SciTech Connect

    Berggren, R.W.; Moynihan, T.M.

    1982-09-01

    A free-piston Stirling engine/linear alternator system (FPSE-010-3), developed under previous Department of Energy (DOE) funding, has been used as a test bed for evaluating selected Stirling engine loss mechanisms. The engine is particularly suited to test-bed operation because engine performance can be evaluated over a wide range of operating conditions; system instrumentation is capable of measuring the effects of system component changes; and modular engine design facilitates the evaluation of alternate component configurations. Extensive testing was performed to establish the operating characteristics of a base-line engine configuration and to characterize specific losses within a Stirling engine. Significant variations in engine performance were observed as the displacer seal clearance was varied. This paper presents selected results from the base-line and displacer seal clearance tests.

  5. Argonne National Laboratory's Omnivorous Engine

    SciTech Connect

    Thomas Wallner

    2009-10-16

    Why can't an engine run on any fuel? Argonne is designing an omnivorous engine that can run on any blend of gasoline, ethanol or butanoland calibrate itself to burn that fuel most efficiently.

  6. engineering | National Nuclear Security Administration

    National Nuclear Security Administration (NNSA)

    Engineer develops 'leap forward' with 3D-printer Lawrence Livermore Laboratory engineer Bryan Moran won an award last month for his 3D printing innovation. It could revolutionize ...

  7. Understanding Stirling engines. Technical paper

    SciTech Connect

    Beale, W.

    1984-01-01

    The paper describes the basic Stirling engine, as well as some of the most promising modern varieties. The intent is to familiarize people in developing countries with the engine's operation and range of applications.

  8. Atlanta Chemical Engineering LLC | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Atlanta Chemical Engineering LLC Jump to: navigation, search Logo: Atlanta Chemical Engineering LLC Name: Atlanta Chemical Engineering LLC Place: Marietta, Georgia Country: United...

  9. Sandian Selected for Outstanding Engineer Award

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... Sandian Selected for Outstanding Engineer Award The Institute of Electrical and ... Jose Luis' broad background in mechanical engineering, physics, and electrical engineering ...

  10. BGA Engineering LLC | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    search Name: BGA Engineering LLC Place: Glen Rock, New Jersey Zip: 7452 Sector: Solar Product: Engineering firm specialising in substation engineering and design, power plant...

  11. Tasco Engineering Inc | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Tasco Engineering Inc Jump to: navigation, search Name: Tasco Engineering Inc Place: Lehi, Utah Zip: 84043 Sector: Hydro, Solar, Wind energy Product: Power engineering firm with...

  12. Calypso Engineering Srl | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Calypso Engineering Srl Jump to: navigation, search Name: Calypso Engineering Srl Place: Albino, Italy Sector: Services, Wind energy Product: Develops and provides engineering...

  13. Cleaning Up Diesel Engines | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Diesel Engines Cleaning Up Diesel Engines 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters PDF icon 2005deerwitherspoon.pdf More Documents & ...

  14. Vehicle Technologies Office: 2014 Advanced Combustion Engine...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    2014 Advanced Combustion Engine Annual Progress Report Vehicle Technologies Office: 2014 Advanced Combustion Engine Annual Progress Report The Advanced Combustion Engine research...

  15. Mechanical Engineer | Princeton Plasma Physics Lab

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Engineer Department: Engineering Supervisor(s): Bill Blanchard Staff: EM 3 Requisition Number: 1500 The Mechanical Design Engineer will develop, design, manufacture, and test ...

  16. Instrumentation & Controls Electrical Engineer | Princeton Plasma...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Instrumentation & Controls Electrical Engineer Department: Engineering Supervisor(s): Tim ... Perform role of COG engineer in PMO system to perform project management jobs. Generates ...

  17. Hydrogen Engine Center HEC | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Engine Center HEC Jump to: navigation, search Name: Hydrogen Engine Center (HEC) Place: Algona, Iowa Zip: IA 50511 Sector: Hydro, Hydrogen Product: The Hydrogen Engine Center (HEC)...

  18. Nuclear Science and Engineering Education Sourcebook | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Science and Engineering Education Sourcebook Nuclear Science and Engineering Education Sourcebook The Nuclear Science and Engineering Education Sourcebook is a repository of ...

  19. Cleaner, More Efficient Diesel Engines

    SciTech Connect

    Musculus, Mark

    2013-08-13

    Mark Musculus, an engine combustion scientist at Sandia National Laboratories, led a study that outlines the science base for auto and engine manufacturers to build the next generation of cleaner, more efficient engines using low-temperature combustion. Here, Musculus discusses the work at Sandia's Combustion Research Facility.

  20. Cleaner, More Efficient Diesel Engines

    ScienceCinema

    Musculus, Mark

    2014-02-26

    Mark Musculus, an engine combustion scientist at Sandia National Laboratories, led a study that outlines the science base for auto and engine manufacturers to build the next generation of cleaner, more efficient engines using low-temperature combustion. Here, Musculus discusses the work at Sandia's Combustion Research Facility.

  1. Internal combustion engine

    DOEpatents

    Baker, Quentin A.; Mecredy, Henry E.; O'Neal, Glenn B.

    1991-01-01

    An improved engine is provided that more efficiently consumes difficult fuels such as coal slurries or powdered coal. The engine includes a precombustion chamber having a portion thereof formed by an ignition plug. The precombustion chamber is arranged so that when the piston is proximate the head, the precombustion chamber is sealed from the main cylinder or the main combustion chamber and when the piston is remote from the head, the precombustion chamber and main combustion chamber are in communication. The time for burning of fuel in the precombustion chamber can be regulated by the distance required to move the piston from the top dead center position to the position wherein the precombustion chamber and main combustion chamber are in communication.

  2. Advanced engineering analysis

    SciTech Connect

    Freeman, W.R.

    1992-11-01

    The Advanced Engineering Analysis project is being used to improve the breadth of engineering analysis types, the particular phenomena which may be simulated, and also increase the accuracy and usability of the results of both new and current types of simulations and analyses. This is an interim report covering several topics under this project. Information on two new implementations of failure criteria for metal forming, the implementation of coupled fluid flow/heat transfer analysis capabilities, the integration of experimental shock and vibration test data with analyses, a correction to a contact solution problem with a 3-D parabolic brick finite element, and the development and implementation of a file translator to link IDEAS to DYNA3D is provided in this report.

  3. Electrochemical heat engine

    DOEpatents

    Elliott, Guy R. B.; Holley, Charles E.; Houseman, Barton L.; Sibbitt, Jr., Wilmer L.

    1978-01-01

    Electrochemical heat engines produce electrochemical work, and mechanical motion is limited to valve and switching actions as the heat-to-work cycles are performed. The electrochemical cells of said heat engines use molten or solid electrolytes at high temperatures. One or more reactions in the cycle will generate a gas at high temperature which can be condensed at a lower temperature with later return of the condensate to electrochemical cells. Sodium, potassium, and cesium are used as the working gases for high temperature cells (above 600 K) with halogen gases or volatile halides being used at lower temperature. Carbonates and halides are used as molten electrolytes and the solid electrolyte in these melts can also be used as a cell separator.

  4. Photonically engineered incandescent emitter

    DOEpatents

    Gee, James M.; Lin, Shawn-Yu; Fleming, James G.; Moreno, James B.

    2003-08-26

    A photonically engineered incandescence is disclosed. The emitter materials and photonic crystal structure can be chosen to modify or suppress thermal radiation above a cutoff wavelength, causing the emitter to selectively emit in the visible and near-infrared portions of the spectrum. An efficient incandescent lamp is enabled thereby. A method for fabricating a three-dimensional photonic crystal of a structural material, suitable for the incandescent emitter, is also disclosed.

  5. Science, Technology, and Engineering

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    PADSTE Science, Technology, and Engineering Delivering mission success and innovative solutions to national security problems through the agile, rapid application of our transformational scientific capabilities Mars rover laswer targets rocks all by itself Mars rover targets rocks all by itself READ MORE New insights into "plant memories" New insights into "plant memories" READ MORE Deep moonquakes reveal thickness of the lunar crust Deep moonquakes reveal thickness of the

  6. The ESnet Engineering Team

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Fasterdata IPv6 Network Network Performance Tools The ESnet Engineering Team Network R&D Software-Defined Networking (SDN) Experimental Network Testbeds Performance (perfSONAR) Software & Tools Development Data for Researchers Partnerships Publications Workshops Science Engagement Move your data Programs & Workshops Science Requirements Reviews Case Studies News & Publications ESnet News Publications and Presentations Galleries ESnet Awards and Honors Blog ESnet Live Home »

  7. Photonically Engineered Incandescent Emitter

    DOEpatents

    Gee, James M.; Lin, Shawn-Yu; Fleming, James G.; Moreno, James B.

    2005-03-22

    A photonically engineered incandescence is disclosed. The emitter materials and photonic crystal structure can be chosen to modify or suppress thermal radiation above a cutoff wavelength, causing the emitter to selectively emit in the visible and near-infrared portions of the spectrum. An efficient incandescent lamp is enabled thereby. A method for fabricating a three-dimensional photonic crystal of a structural material, suitable for the incandescent emitter, is also disclosed.

  8. Ram jet engine

    SciTech Connect

    Crispin, B.; Pohl, W.D.; Thomaier, D.; Voss, N.

    1983-11-29

    In a ram jet engine, a tubular combustion chamber is divided into a flame chamber followed by a mixing chamber. The ram air is supplied through intake diffusers located on the exterior of the combustion chamber. The intake diffusers supply combustion air directly into the flame chamber and secondary air is conveyed along the exterior of the combustion chambers and then supplied directly into the mixing chamber.

  9. Modular Aneutronic Fusion Engine

    SciTech Connect

    Gary Pajer, Yosef Razin, Michael Paluszek, A.H. Glasser and Samuel Cohen

    2012-05-11

    NASA's JUNO mission will arrive at Jupiter in July 2016, after nearly five years in space. Since operational costs tend to rise with mission time, minimizing such times becomes a top priority. We present the conceptual design for a 10MW aneutronic fusion engine with high exhaust velocities that would reduce transit time for a Jupiter mission to eighteen months and enable more challenging exploration missions in the solar system and beyond. __________________________________________________

  10. MARS Flight Engineering Status

    SciTech Connect

    Fast, James E.; Dorow, Kevin E.; Morris, Scott J.; Thompson, Robert C.; Willett, Jesse A.

    2010-04-06

    The Multi-sensor Airborne Radiation Survey Flight Engineering project (MARS FE) has designed a high purity germanium (HPGe) crystal array for conducting a wide range of field measurements. In addition to the HPGe detector system, a platform-specific shock and vibration isolation system and environmental housing have been designed to support demonstration activities in a maritime environment on an Unmanned Surface Vehicle (USV). This report describes the status of the equipment as of the end of FY09.

  11. Evangelos Chaniotakis, Network Engineer

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Evangelos Chaniotakis About ESnet Our Mission The Network ESnet History Governance & Policies Career Opportunities ESnet Staff & Org Chart ESnet Leadership Administration Advanced Network Technologies Cybersecurity Infrastructure, Identity & Collaboration Network Engineering Network Planning Operational Enhancements Office of the CTO Science Engagement Tools Team Contact Us Contact Us Technical Assistance: 1 800-33-ESnet (Inside US) 1 800-333-7638 (Inside US) 1 510-486-7600

  12. Environmental, safety, and health engineering

    SciTech Connect

    Woodside, G.; Kocurek, D.

    1997-12-31

    A complete guide to environmental, safety, and health engineering, including an overview of EPA and OSHA regulations; principles of environmental engineering, including pollution prevention, waste and wastewater treatment and disposal, environmental statistics, air emissions and abatement engineering, and hazardous waste storage and containment; principles of safety engineering, including safety management, equipment safety, fire and life safety, process and system safety, confined space safety, and construction safety; and principles of industrial hygiene/occupational health engineering including chemical hazard assessment, personal protective equipment, industrial ventilation, ionizing and nonionizing radiation, noise, and ergonomics.

  13. Gaseous-fuel engine technology

    SciTech Connect

    1995-12-31

    This publication contains three distinct groups of papers covering gaseous-fuel injection and control, gaseous-fuel engine projects, and gaseous-fuel engine/vehicle applications. Contents include: ultra rapid natural gas port injection; a CNG specific fuel injector using latching solenoid technology; development of an electronically-controlled natural gas-fueled John Deere PowerTech 8.1L engine; adapting a Geo Metro to run on natural gas using fuel-injection technology; behavior of a closed loop controlled air valve type mixer on a natural gas fueled engine under transient operation; and a turbocharged lean-burn 4.3 liter natural gas engine.

  14. Evaluation and silicon nitride internal combustion engine components. Final report, Phase I

    SciTech Connect

    Voldrich, W.

    1992-04-01

    The feasibility of silicon nitride (Si{sub 3}N{sub 4}) use in internal combustion engines was studied by testing three different components for wear resistance and lower reciprocating mass. The information obtained from these preliminary spin rig and engine tests indicates several design changes are necessary to survive high-stress engine applications. The three silicon nitride components tested were valve spring retainers, tappet rollers, and fuel pump push rod ends. Garrett Ceramic Components` gas-pressure sinterable Si{sub 3}N{sub 4} (GS-44) was used to fabricate the above components. Components were final machined from densified blanks that had been green formed by isostatic pressing of GS-44 granules. Spin rig testing of the valve spring retainers indicated that these Si{sub 3}N{sub 4} components could survive at high RPM levels (9,500) when teamed with silicon nitride valves and lower spring tension than standard titanium components. Silicon nitride tappet rollers showed no wear on roller O.D. or I.D. surfaces, steel axles and lifters; however, due to the uncrowned design of these particular rollers the cam lobes indicated wear after spin rig testing. Fuel pump push rod ends were successful at reducing wear on the cam lobe and rod end when tested on spin rigs and in real-world race applications.

  15. Honda motor company's CVCC engine

    SciTech Connect

    Abernathy, W.J.; Ronan, L.

    1980-07-01

    Honda Motor Company of Japan in a four-year period from 1968 to 1872 designed, tested, and mass-produced a stratified charge engine, the CVCC, which in comparison to conventional engines of similar output at the time was lower in CO, HC and NO/sub x/ emissions and higher in fuel economy. Honda developed the CVCC engine without government assistance or outside help. Honda's success came at a time when steadily increasing fuel costs and the various provisions of the Clean Air Act had forced US automakers to consider possible alternatives to the conventional gasoline engine. While most major engine manufacturers had investigated some form of stratified charge engine, Honda's CVCC was the only one to find successful market application. This case study examines the circumstances surrounding the development of the CVCC engine and its introduction into the Japanese and American markets.

  16. BPA files reciprocity tariff

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    the Pacific Northwest," said Cathy Ehli, BPA vice president, Transmission Marketing and Sales. "We began with many areas of disagreement but have been able to substantially...

  17. Fluid driven reciprocating apparatus

    DOEpatents

    Whitehead, J.C.

    1997-04-01

    An apparatus is described comprising a pair of fluid driven pump assemblies in a back-to-back configuration to yield a bi-directional pump. Each of the pump assemblies includes a piston or diaphragm which divides a chamber therein to define a power section and a pumping section. An intake-exhaust valve is connected to each of the power sections of the pump chambers, and function to direct fluid, such as compressed air, into the power section and exhaust fluid therefrom. At least one of the pistons or diaphragms is connected by a rod assembly which is constructed to define a signal valve, whereby the intake-exhaust valve of one pump assembly is controlled by the position or location of the piston or diaphragm in the other pump assembly through the operation of the rod assembly signal valve. Each of the pumping sections of the pump assemblies are provided with intake and exhaust valves to enable filling of the pumping section with fluid and discharging fluid therefrom when a desired pressure has been reached. 13 figs.

  18. Dual capacity reciprocating compressor

    DOEpatents

    Wolfe, Robert W.

    1984-01-01

    A multi-cylinder compressor 10 particularly useful in connection with northern climate heat pumps and in which different capacities are available in accordance with reversing motor 16 rotation is provided with an eccentric cam 38 on a crank pin 34 under a fraction of the connecting rods, and arranged for rotation upon the crank pin between opposite positions 180.degree. apart so that with cam rotation on the crank pin such that the crank throw is at its normal maximum value all pistons pump at full capacity, and with rotation of the crank shaft in the opposite direction the cam moves to a circumferential position on the crank pin such that the overall crank throw is zero. Pistons 24 whose connecting rods 30 ride on a crank pin 36 without a cam pump their normal rate with either crank rotational direction. Thus a small clearance volume is provided for any piston that moves when in either capacity mode of operation.

  19. Dual capacity reciprocating compressor

    DOEpatents

    Wolfe, R.W.

    1984-10-30

    A multi-cylinder compressor particularly useful in connection with northern climate heat pumps and in which different capacities are available in accordance with reversing motor rotation is provided with an eccentric cam on a crank pin under a fraction of the connecting rods, and arranged for rotation upon the crank pin between opposite positions 180[degree] apart so that with cam rotation on the crank pin such that the crank throw is at its normal maximum value all pistons pump at full capacity, and with rotation of the crank shaft in the opposite direction the cam moves to a circumferential position on the crank pin such that the overall crank throw is zero. Pistons whose connecting rods ride on a crank pin without a cam pump their normal rate with either crank rotational direction. Thus a small clearance volume is provided for any piston that moves when in either capacity mode of operation. 6 figs.

  20. Sandia Energy - Sandia Cyber Engineering Research Laboratory...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Cyber Engineering Research Laboratory (CERL) Formally Opens Home Infrastructure Security Cyber Infrastructure Assurance Facilities News News & Events Analysis Cyber Engineering...

  1. Optimization of Advanced Diesel Engine Combustion Strategies...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    More Documents & Publications Optimization of Advanced Diesel Engine Combustion Strategies Optimization of Advanced Diesel Engine Combustion Strategies Computational Fluid Dynamics ...

  2. Biodiesel Outlook - An Engine Manufacturer's Perspective | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Outlook - An Engine Manufacturer's Perspective Biodiesel Outlook - An Engine ... More Documents & Publications Biodiesel ASTM Update and Future Technical Needs Recent ...

  3. Career Map: Civil Engineer | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Civil Engineer Career Map: Civil Engineer A civil engineer wearing a safety vest and hard hat stands in front of a wind turbine. Civil Engineer Position Title Civil Engineer Alternate Title(s) Engineer Education & Training Level Bachelors required, prefer graduate degree Education & Training Level Description Civil engineers need a bachelor's degree. They typically need a graduate degree for promotion to managerial positions. Civil engineers who sell their own services publicly must be

  4. Career Map: Engineering Manager | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Engineering Manager Career Map: Engineering Manager Two engineering managers wearing hard hats inspect a wind component. Engineering Manager Position Title Engineering Manager Alternate Title(s) n/a Education & Training Level Bachelor's degree in relevant engineering discipline required Education & Training Level Description Engineering managers typically have at least a bachelor's degree and significant work experience. Brief job description The engineering manager plans, coordinates,

  5. Career Map: Sales Engineer | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Sales Engineer Career Map: Sales Engineer Several sales engineers collaborate on a project using a tablet. Sales Engineer Position Title Sales Engineer Alternate Title(s) Technical Sales Engineer, Senior Sales Executive, Vice President of Sales, Key Account Manager Education & Training Level Bachelors required, prefer graduate degree Education & Training Level Description Sales engineers typically need a bachelor's degree in engineering or a related field. Brief job description Sales

  6. Advanced Gasoline Turbocharged Direct Injection (GTDI) Engine...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Turbocharged Direct Injection (GTDI) Engine Development Vehicle Technologies Office Merit Review 2014: Advanced Gasoline Turbocharged Direct Injection (GTDI) Engine ...

  7. Title: Collaborative Industry - Academic Synchrophasor Engineering...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Title: Collaborative Industry - Academic Synchrophasor Engineering Program Principal ... course in the Electrical and Computer Engineering (ECE) department where students will ...

  8. Engineering Molecular Transformations for Sustainable Energy...

    Office of Scientific and Technical Information (OSTI)

    Engineering Molecular Transformations for Sustainable Energy Conversion Citation Details In-Document Search Title: Engineering Molecular Transformations for Sustainable Energy ...

  9. Interdisciplinary General Engineer/Physical Scientist (Facility...

    Office of Environmental Management (EM)

    Interdisciplinary General EngineerPhysical Scientist (Facility Representative) Interdisciplinary General EngineerPhysical Scientist (Facility Representative) Submitted by admin ...

  10. China National Machinery Industry Complete Engineering Corporation...

    OpenEI (Open Energy Information) [EERE & EIA]

    Industry Complete Engineering Corporation CMCEC Jump to: navigation, search Name: China National Machinery Industry Complete Engineering Corporation (CMCEC) Place: Beijing,...

  11. Integrated Computational Materials Engineering (ICME) for Mg...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    More Documents & Publications Integrated Computational Materials Engineering (ICME) for Mg: International Pilot Project Integrated Computational Materials Engineering (ICME) for ...

  12. Thermoacoustic refrigerators and engines comprising cascading...

    Office of Scientific and Technical Information (OSTI)

    Thermoacoustic refrigerators and engines comprising cascading stirling thermodynamic units Title: Thermoacoustic refrigerators and engines comprising cascading stirling ...

  13. A loaded thermoacoustic engine

    SciTech Connect

    Olson, J.R.; Swift, G.W.

    1995-11-01

    Measurements and analysis of the performance of a thermoacoustic engine driving a dissipative load are presented. The effect of the load can be explained qualitatively using a simple low-amplitude approximation and quantitatively by invoking a more accurate low-amplitude numerical solution. The heater power {ital @};DQ and hot-end temperature {ital T}{sub {ital H}} are found to be simple functions of the load impedance and the unloaded values of {ital @};DQ and {ital T}{sub {ital H}}. {copyright} {ital 1995} {ital Acoustical} {ital Society} {ital of} {ital America}.

  14. Acoustical heat pumping engine

    DOEpatents

    Wheatley, J.C.; Swift, G.W.; Migliori, A.

    1983-08-16

    The disclosure is directed to an acoustical heat pumping engine without moving seals. A tubular housing holds a compressible fluid capable of supporting an acoustical standing wave. An acoustical driver is disposed at one end of the housing and the other end is capped. A second thermodynamic medium is disposed in the housing near to but spaced from the capped end. Heat is pumped along the second thermodynamic medium toward the capped end as a consequence both of the pressure oscillation due to the driver and imperfect thermal contact between the fluid and the second thermodynamic medium. 2 figs.

  15. Acoustical heat pumping engine

    DOEpatents

    Wheatley, John C.; Swift, Gregory W.; Migliori, Albert

    1983-08-16

    The disclosure is directed to an acoustical heat pumping engine without moving seals. A tubular housing holds a compressible fluid capable of supporting an acoustical standing wave. An acoustical driver is disposed at one end of the housing and the other end is capped. A second thermodynamic medium is disposed in the housing near to but spaced from the capped end. Heat is pumped along the second thermodynamic medium toward the capped end as a consequence both of the pressure oscillation due to the driver and imperfect thermal contact between the fluid and the second thermodynamic medium.

  16. Climate Engineering with Stratospheric Aerosols and Associated Engineering Parameters

    SciTech Connect

    Kravitz, Benjamin S.

    2013-02-12

    Climate engineering with stratospheric aerosols, an idea inspired by large volcaniceruptions, could cool the Earth’s surface and thus alleviate some of the predicted dangerous impacts of anthropogenic climate change. However, the effectiveness of climate engineering to achieve a particular climate goal, and any associated side effects, depend on certain aerosol parameters and how the aerosols are deployed in the stratosphere. Through the examples of sulfate and black carbon aerosols, this paper examines "engineering" parameters-aerosol composition, aerosol size, and spatial and temporal variations in deployment-for stratospheric climate engineering. The effects of climate engineering are sensitive to these parameters, suggesting that a particle could be found ordesigned to achieve specific desired climate outcomes. This prospect opens the possibility for discussion of societal goals for climate engineering.

  17. Knock-free engine control system for turbocharged automotive engine

    SciTech Connect

    Hirabayashi, Y.

    1985-04-09

    In a turbocharged internal combustion engine, in order to optimize engine torque output spark timing control and boost pressure control are coordinated in such a manner that spark advance angle is adjusted only when the measured boost pressure equals a predetermined value and is allowed to vary only within a specified range advanced from a reference value derived from an empirical memory table on the basis of engine speed and boost pressure. When engine operating conditions are such that spark advance angle would fall outside of the specified range, spark advance angle is then held at the empirical value and boost pressure is adjusted in order to optimize engine torque. The coordinated control system can also be designed to respond to exhaust gas temperature on a first-priority basis, i.e., when exhaust temperature is sensed to be dangerously high, boost pressure is reduced regardless of other engine conditions.

  18. Supervisory Electrical Engineer- Supervisory Power System Real Time Electrical Engineer

    Energy.gov [DOE]

    (See Frequently Asked Questions for more information). Where would I be working? Western Area Power Administration Rocky Mountain Region Power System Operations Operations Engineering, (J4200) 5555...

  19. Increased Engine Efficiency via Advancements in Engine Combustion Systems

    Energy.gov [DOE]

    Presentation given at the 16th Directions in Engine-Efficiency and Emissions Research (DEER) Conference in Detroit, MI, September 27-30, 2010.

  20. Rotary engine and method

    SciTech Connect

    Overman, K.

    1991-12-17

    This paper describes a rotary engine. It comprises: an engine block, the block defining an internal rotor cavity, a rotor, the rotor eccentrically positioned within the cavity, the block defining a combustion chamber, the combustion chamber positioned exteriorly of the rotor cavity and in fluid communication therewith, a pair of pistons, the pistons affixed to each other and slidably mounted within the rotor, an air inlet valve, the inlet valve positioned at one side of the combustion chamber, a dual acting outlet valve, the outlet valve comprising a top and a bottom rest, the outlet valve positioned at the other side of the combustion chamber, the combustion chamber defining both an outlet valve ceiling port and an outlet valve floor port, means to ignite fuel, the fuel ignition means located within the combustion chamber between the inlet and outlet valves, the block defining an exhaust port, the exhaust port spaced circumferentially from the combustion chamber and in fluid communication with the rotor cavity, the block defining an inlet port, and the inlet port circumfrentially spaced from the outlet port and in fluid communication with the rotor cavity.