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Note: This page contains sample records for the topic "heavy-duty diesel engines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Heavy Duty Diesel Engine Exhaust Aerosol Particle and Ion Measurements  

Science Journals Connector (OSTI)

Heavy Duty Diesel Engine Exhaust Aerosol Particle and Ion Measurements ... diesel engines have received increasing attention due to their potential health effects. ...

Tero Lähde; Topi Rönkkö; Annele Virtanen; Tanja J. Schuck; Liisa Pirjola; Kaarle Hämeri; Markku Kulmala; Frank Arnold; Dieter Rothe; Jorma Keskinen

2008-12-09T23:59:59.000Z

2

Variable Charge Motion for 2007-2010 Heavy Duty Diesel Engines...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Variable Charge Motion for 2007-2010 Heavy Duty Diesel Engines Variable Charge Motion for 2007-2010 Heavy Duty Diesel Engines 2003 DEER Conference Presentation: AVL Powertrain...

3

2007-2009 USA Emission Solutions for Heavy-Duty Diesel Engines...  

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

-2009 USA Emission Solutions for Heavy-Duty Diesel Engines 2007-2009 USA Emission Solutions for Heavy-Duty Diesel Engines 2002 DEER Conference Presentation: Southwest Research...

4

Diesel Particle Filter and Fuel Effects on Heavy-Duty Diesel Engine Emissions  

Science Journals Connector (OSTI)

Diesel Particle Filter and Fuel Effects on Heavy-Duty Diesel Engine Emissions ... Gaseous and Particulate Emissions from Diesel Engines at Idle and under Load: Comparison of Biodiesel Blend and Ultralow Sulfur Diesel Fuels ...

Matthew A. Ratcliff; A. John Dane; Aaron Williams; John Ireland; Jon Luecke; Robert L. McCormick; Kent J. Voorhees

2010-10-01T23:59:59.000Z

5

Emissions from Heavy-Duty Diesel Engine with EGR using Oil Sands...  

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

Heavy-Duty Diesel Engine with EGR using Oil Sands Derived Fuels Emissions from Heavy-Duty Diesel Engine with EGR using Oil Sands Derived Fuels 2003 DEER Conference Presentation:...

6

Creation and Testing of the ACES Heavy Heavy-Duty Diesel Engine...  

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

Creation and Testing of the ACES Heavy Heavy-Duty Diesel Engine Test Schedule for Representative Measurement of Heavy-Duty Engine Emissions Creation and Testing of the ACES Heavy...

7

Department of Mechanical Engineering Fall 2011 Heavy Duty Diesel Engine Friction Reduction  

E-Print Network (OSTI)

PENNSTATE Department of Mechanical Engineering Fall 2011 Heavy Duty Diesel Engine Friction the friction losses of a heavy duty diesel engine. In addition, a tear down procedure needed to be created in order to guide the engine disassembly and testing. The overall goal was to improve fuel economy

Demirel, Melik C.

8

Effect of sulfur on heavy duty diesel engine lubricants  

SciTech Connect

Diesel engine exhaust legislation has become quite onerous for heavy duty engines. Yet, these high thermal efficiency engines continue to meet lower exhaust particulate and NOx emissions limits, due to new engine designs and the complementary engine oil performance requirements of the API service categories. In addition, the EPA has mandated changes in on-highway diesel fuel to help meet particulate emissions regulations. On October 1, 1993, when the EPA outlawed high sulfur fuels for on-highway use, the development of the API CG-4 engine oil performance specification was already in progress. All the new diesel engine tests in the category were therefore designed to run with low (< 0.05% wt.) sulfur fuel. In some engine tests, this new fuel improved some lubricant performance characteristics and degraded others. An engine oil specification for low sulfur fuel brings new challenges to developing future specifications for diesel engine oils. Both higher and lower lubricant additive treat rate products, high performance single grade oils, and formulations to meet world-wide specifications become viable. This paper discusses the results of a diesel engine oil technology that performs well with the new, low sulfur fuel in both engine tests and in the field.

Hayden, T.E. [Texaco Fuels and Lubricants Research Dept., Beacon, NY (United States)

1996-12-01T23:59:59.000Z

9

Injection timing and cone angle behavior on a heavy duty diesel engine  

Science Journals Connector (OSTI)

In this paper the three dimensional computational fluid dynamics (CFD) analysis have been used to improve understanding of the formation of soot and NO during combustion in a heavy duty diesel engine. Six injection strategies were used as follows: start ... Keywords: NO, diesel engine, heavy duty, injection cone angle, injection timing, soot

M. Gorji-Bandpy; D. D. Ganji; S. Soleimani

2008-09-01T23:59:59.000Z

10

Fuel Efficiency and Emissions Optimization of Heavy-Duty Diesel...  

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

and Emissions Optimization of Heavy-Duty Diesel Engines using Model-Based Transient Calibration Fuel Efficiency and Emissions Optimization of Heavy-Duty Diesel Engines using...

11

Pollution duality in turbocharged heavy duty diesel engine  

Science Journals Connector (OSTI)

Diesel engine designers are faced with increasingly stringent social demands to reduce emissions while maintaining high performance. Several strategies are considered, such as the advanced fuel system, the cooled exhaust gas recirculation (EGR), the particulate filter, the NOx after-treatment, the oxidation catalyst, the advanced control techniques and the alternative combustion. These strategies have been tuned to achieve the lowest engine exhaust gas emissions. The major problem of diesel engine pollution is the NOx and soot formation. Their antagonistic evolution according to the air/fuel ratio is well-known, and requires a good compromise. In this article, a numerical investigation was carried out using the KIVA-3v code. The aim deals with the influence of some engine parameters on the performances and the pollutant (NOx-soot) formation of a turbocharged heavy duty direct injection diesel engine. The numerical simulations were achieved to capture independently the effects of engine operating parameters such as the fuel injection timing, the fuel injection duration, the piston bowl diameter and the EGR rate. The obtained results are discussed and some conclusions are developed.

M. Bencherif; A. Liazid; M. Tazerout

2009-01-01T23:59:59.000Z

12

Emissions from Heavy-Duty Diesel Engine with EGR using Oil Sands...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Canada Ottawa, Ontario, Canada Emissions from Heavy-Duty Diesel Engine with EGR using Oil Sands Derived Fuels W. Stuart Neill 9 th DEER Conference, Newport, Rhode Island August...

13

Effect of Fuel Injection Pressure on a Heavy-Duty Diesel Engine Nonvolatile Particle Emission  

Science Journals Connector (OSTI)

Effect of Fuel Injection Pressure on a Heavy-Duty Diesel Engine Nonvolatile Particle Emission ... (4, 9, 10) Recently, we have found nonvolatile core particles in the exhaust of heavy-duty diesel vehicles and engines also at high load conditions. ... On the basis of the thermodynamic behavior, particle core material has been inferred to be solid in room temperature,(4, 6, 10) but the character of the particles in general is still an open question. ...

Tero Lähde; Topi Rönkkö; Matti Happonen; Christer Söderström; Annele Virtanen; Anu Solla; Matti Kytö; Dieter Rothe; Jorma Keskinen

2011-02-24T23:59:59.000Z

14

Nanoparticle Emissions from a Heavy-Duty Engine Running on Alternative Diesel Fuels  

Science Journals Connector (OSTI)

Nanoparticle Emissions from a Heavy-Duty Engine Running on Alternative Diesel Fuels ... Neat vegetable oils or animal fats are not suitable for high-speed diesel engines, and thus a transesterification process is required to produce fatty acid methyl esters (FAME). ... General trends in size distribution measurements are shown in Figure 1. ...

Juha Heikkilä; Annele Virtanen; Topi Rönkkö; Jorma Keskinen; Päivi Aakko-Saksa; Timo Murtonen

2009-11-16T23:59:59.000Z

15

Roadmapping Engine Technology for Post-2020 Heavy Duty Vehicles...  

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

Roadmapping Engine Technology for Post-2020 Heavy Duty Vehicles Roadmapping Engine Technology for Post-2020 Heavy Duty Vehicles Discusses Detroit Diesel collaborative multi-year...

16

Performance and emission enhancements of a variable geometry turbocharger on a heavy-duty diesel engine  

Science Journals Connector (OSTI)

Variable Geometry Turbochargers (VGTs) have emerged in the heavy-duty diesel market with the simultaneous introduction of Exhaust Gas Recirculation (EGR) in meeting emission standards. From a military perspective, VGTs offer considerable promise of improving low speed torque and overall fuel economy. Despite these gains, nitric oxides (NOx) emissions generally increase with increased boost. During times when the military can reduce its environmental impact, VGTs can drive EGR and counter the increase in NOx emissions with relatively minor penalty in particulate matter (PM) emissions. This study highlights the performance and emission enhancements enabled by a VGT on a heavy-duty diesel engine.

Timothy J. Jacobs; Chad Jagmin; Wesley J. Williamson; Zoran S. Filipi; Dennis N. Assanis; Walter Bryzik

2008-01-01T23:59:59.000Z

17

Analysis of parasitic losses in heavy duty diesel engines  

E-Print Network (OSTI)

Fuel economy of large, on-road diesel engines has become even more critical in recent years for engine manufactures, vehicle OEMs, and truck operators, in view of pending CO2 emission regulations. Demands for increased ...

James, Christopher Joseph

2012-01-01T23:59:59.000Z

18

Oxygenated fuels for clean heavy-duty diesel engines  

Science Journals Connector (OSTI)

For diesel engines, changing the fuel composition is an alternative route towards achieving lower emission levels. The potential of oxygenated fuels to significantly reduce particulate matter emissions has already been demonstrated earlier. In this study, this research has been extrapolated towards lower emission levels. Exhaust gas recirculation (EGR) was applied to a modern EURO-3-type HD diesel engine. Tests were done at different engine working points, with EGR-levels and start of fuel delivery timings set to give NOx emissions between 3.5 and 2.0 g/kWh with regular diesel fuel. Fourteen blends of a low-sulphur diesel fuel respectively of a gas-to-liquid synthetic diesel fuel with different oxygenates were tested. The corresponding fuel matrix covers a range of fuel oxygen mass fractions up to 15%. Results are presented and the impact of fuel oxygen mass fraction and Cetane Number are analysed and compared with results from previous research.

P.J.M. Frijters; R.S.G. Baert

2006-01-01T23:59:59.000Z

19

Department of Energy and Electrical Engineering Spring 2012 Heavy-Duty Diesel Engine Friction Reduction Testing and Analysis  

E-Print Network (OSTI)

PENNSTATE Department of Energy and Electrical Engineering Spring 2012 Heavy-Duty Diesel Engine and pumping frictional losses on Volvo-Mack's 11 liter Diesel Engine. Thermocouples and pressure transducers use this rig in the future to quantify frictional losses and improve on the efficiency of their diesel

Demirel, Melik C.

20

Cavitation problem in heavy duty diesel engines: a literature review  

Science Journals Connector (OSTI)

This paper reviews the existing knowledge on cavitation in general and its effect on diesel engine cylinder liners. A brief definition of cavitation and various cavitation numbers are presented. Various effects involved in the formation, growth and collapse of bubbles are also characterized. The effects of pressure, temperature, and dissolved gas on bubble behaviour are mentioned. An attempt is made to study the various types of damage caused by cavitation on fluid flow machinery. The discussion highlights the amount of damage caused to diesel engine cylinder liners, and lists remedies suggested by numerous experts in the field.

Sunil Katragadda; Reda Bata

1994-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "heavy-duty diesel engines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Department of Mechanical and Nuclear Engineering Spring 2012 Heavy-Duty Diesel Engine Friction Reduction Testing and Analysis  

E-Print Network (OSTI)

PENNSTATE Department of Mechanical and Nuclear Engineering Spring 2012 Heavy-Duty Diesel Engine Friction Reduction Testing and Analysis Overview Volvo Group Powertrain Engineering is interested will need to be constructed that can motor the engine and measure power losses using a torque sensor built

Demirel, Melik C.

22

Engine-External HC-Dosing for Regeneration of Diesel Particulate Filters for Heavy Duty and NRMM According to Annex XXVII StVZO  

Energy.gov (U.S. Department of Energy (DOE))

This presentation discusses how a diesel particulate filter can be integrated in the exhaust piping of a heavy-duty engine.

23

Influence of Real-World Engine Load Conditions on Nanoparticle Emissions from a DPF and SCR Equipped Heavy-Duty Diesel Engine  

Science Journals Connector (OSTI)

Influence of Real-World Engine Load Conditions on Nanoparticle Emissions from a DPF and SCR Equipped Heavy-Duty Diesel Engine ... United States Environmental Protection Agency’s (USEPA) emission standards for heavy-duty diesel engines have gradually evolved toward stringent emissions control policy. ... All diesel engines manufactured to be used in the US are subject to the Federal Test Procedure (FTP), which mandates exercising the engine over the FTP engine dynamometer cycle. ...

Arvind Thiruvengadam; Marc C. Besch; Daniel K Carder; Adewale Oshinuga; Mridul Gautam

2011-12-22T23:59:59.000Z

24

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

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

Heavy-Duty Truck Engine: 2007 Emissions with Excellent Fuel Economy Heavy-Duty Truck Engine: 2007 Emissions with Excellent Fuel Economy 2004 Diesel Engine Emissions Reduction...

25

Exhaust Heat Driven Rankine Cycle for a Heavy Duty Diesel Engine...  

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

progress to date and plans to develop a viable Rankine engine to harness useful brake power from wasted heat energy in heavy duty truck engine exhaust deer11singh.pdf More...

26

Can We Accurately Measure In-Use Emissions from Heavy-Duty Diesel...  

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

We Accurately Measure In-Use Emissions from Heavy-Duty Diesel Engines? Can We Accurately Measure In-Use Emissions from Heavy-Duty Diesel Engines? Poster presentation at the 2007...

27

Analysis of C1, C2, and C10 through C33 particle-phase and semi-volatile organic compound emissions from heavy-duty diesel engines  

E-Print Network (OSTI)

from heavy-duty diesel engines Z. Gerald Liu a,*, Devin R. Berg a , Victoria N. Vasys a , Melissa E engines Aftertreatment technology Diesel particulate filter Chemical speciation a b s t r a c t To meet increasingly stringent regulations for diesel engines, technologies such as combustion strategies

Wu, Mingshen

28

Fumigation of a heavy duty common rail marine diesel engine with ethanol–water mixtures  

Science Journals Connector (OSTI)

A heavy duty common rail marine diesel engine operating with two stage injection is tested under load on a test bench with vapourised ethanol–water mixtures mixed into the inlet air at various rates. Ethanol/water mixture strengths of 93%, 72% and 45% by mass are tested. Results are presented for two engine loads at 1800 rpm, with brake mean effective pressure (BMEP) 17 bar and 20 bar. At each test point, constant engine speed and brake torque are maintained for various rates of aqueous ethanol addition. Small increases in brake thermal efficiency are measured with moderate rates of ethanol addition at a BMEP of 20 bar. Exhaust emissions of oxides of nitrogen, carbon monoxide, hydrocarbons, oxygen and carbon dioxide, and exhaust opacity are measured. CO emissions and exhaust opacity tend to increase with increased ethanol addition. \\{NOx\\} emissions tend to decrease with increased ethanol addition and with increased water content. Hydrocarbon emissions remain low, near the detection limit of the analyser. Cylinder pressure and the electronically controlled two stage liquid fuel injection timing are recorded with a high speed data acquisition system. Apparent heat release rate is calculated from the measured cylinder pressure. The apparent heat release rate and fuel injection timing together allow analysis of the mechanism of the combustion process with ethanol fumigation. Two stage injection involves a small pre-injection of diesel fuel to reduce early pressure rise rates in normal diesel engine combustion. Even though injection timing is retarded by the Engine Control Unit as more ethanol is added, combustion timing effectively advances due to the effect of two stage injection. Where the ethanol/air mixture strength is above the lower flammability limit at compression temperatures, the mixture is ignited by the pre-injection and begins to burn rapidly by flame propagation and/or autoignitive propagation before the main liquid fuel injection begins. This occurs for ethanol energy substitution rates greater than 30%. Two distinct peaks in heat release rate appear at the higher ethanol rates. Severe knock becomes apparent for 34% ethanol. Two stage injection may be disadvantageous in these circumstances.

L. Goldsworthy

2013-01-01T23:59:59.000Z

29

Combustion behaviour of a heavy duty common rail marine Diesel engine fumigated with propane  

Science Journals Connector (OSTI)

This paper presents results from the testing of a heavy duty common rail marine Diesel engine with electronically controlled two stage liquid fuel injection, operating under load on a test bench with propane mixed into the inlet air at various rates. Results are presented for a range of engine loads, with brake mean effective pressure up to 22 bar at 1800 rpm. The electronic engine control unit is not modified and allowed to respond to the addition of propane according to its inbuilt map. This results in retarded injection timing with increased propane addition at some test points. At each test point, constant engine speed and brake torque are maintained for various rates of propane addition. Cylinder pressure and the injector activation voltage are recorded with a high speed data acquisition system. Apparent heat release rate is calculated from the measured cylinder pressure. At high rates of propane addition very high pressure rise rates and severe knock are measured. At the high brake mean effective pressure conditions tested, knock limits propane supply rates to less than 20% by energy. Small increases in thermal efficiency are indicated with moderate rates of propane addition. Exhaust emissions of NOx, CO, HC and smoke are measured. CO, HC and smoke emissions increase significantly with increasing propane addition. For high propane supply rates, two distinct peaks in heat release rate are measured. Analysis is made of the flammability of the propane–air mixtures at the elevated temperatures at the end of the compression stroke, using the modified Burgess–Wheeler Law. At propane supply rates greater than 25%, the propane–air mixture is flammable in its own right at compression temperature. The apparent heat release rate, fuel injection timing and flammability data allow analysis of the mechanism of the combustion process with propane fumigation.

L. Goldsworthy

2012-01-01T23:59:59.000Z

30

An investigation of diesel–ignited propane dual fuel combustion in a heavy-duty diesel engine  

Science Journals Connector (OSTI)

Abstract This paper presents a detailed experimental analysis of diesel–ignited propane dual fuel combustion on a 12.9-l, six-cylinder, production heavy-duty diesel engine. Gaseous propane was fumigated upstream of the turbocharger air inlet and ignited using direct injection of diesel sprays. Results are presented for brake mean effective pressures (BMEP) from 5 to 20 bar and different percent energy substituted (PES) by propane at a constant engine speed of 1500 rpm. The effect of propane PES on apparent heat release rates, combustion phasing and duration, fuel conversion and combustion efficiencies, and engine-out emissions of oxides of nitrogen (NOx), smoke, carbon monoxide (CO), and total unburned hydrocarbons (HC) were investigated. Exhaust particle number concentrations and size distributions were also quantified for diesel–ignited propane combustion. With stock engine parameters, the maximum propane PES was limited to 86%, 60%, 33%, and 25% at 5, 10, 15, and 20 bar BMEPs, respectively, either by high maximum pressure rise rates (MPRR) or by excessive HC and CO emissions. With increasing PES, while fuel conversion efficiencies increased slightly at high \\{BMEPs\\} or decreased at low BMEPs, combustion efficiencies uniformly decreased. Also, with increasing PES, \\{NOx\\} and smoke emissions were generally decreased but these reductions were accompanied by higher HC and CO emissions. Exhaust particle number concentrations decreased with increasing PES at low loads but showed the opposite trends at higher loads. At 10 bar BMEP, by adopting a different fueling strategy, the maximum possible propane PES was extended to 80%. Finally, a limited diesel injection timing study was performed to identify the optimal operating conditions for the best efficiency-emissions-MPRR tradeoffs.

Andrew C. Polk; Chad D. Carpenter; Kalyan Kumar Srinivasan; Sundar Rajan Krishnan

2014-01-01T23:59:59.000Z

31

Relevance of valve overlap for meeting Euro 5 soot emissions requirements during load transient process in heavy duty diesel engines  

Science Journals Connector (OSTI)

This work describes the influence on performance and soot emissions of using different valve overlap camshafts during load transient processes in a heavy duty (HD) diesel engine equipped with a variable geometry turbine (VGT) in its turbocharger and a selective catalyst reactor (SCR) in the exhaust line. Based on the results of experiments and calculations, in this paper a description is given of how the valve timing affects the instantaneous exhaust and intake pressure, the short-circuit of the air mass flow, the prejudicial backflows, the performance of the turbine and hence the general performance and pollutant emissions of a VGT equipped HD diesel engine during a transient process. The paper concludes that very low or no overlap is imperative if a VGT is used to meet forthcoming pollutant emissions restrictions and to improve the transient response of HD turbocharged diesel engines.

J. Galindo; J.R. Serrano; F. Vera; C. Cervello; M. Lejeune

2006-01-01T23:59:59.000Z

32

A Quantum Leap for Heavy-Duty Truck Engine Efficiency - Hybrid...  

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

A Quantum Leap for Heavy-Duty Truck Engine Efficiency - Hybrid Power System of Diesel and WHR-ORC Engines A Quantum Leap for Heavy-Duty Truck Engine Efficiency - Hybrid Power...

33

Influence and potential of flexible injection rate shaping for medium and heavy duty diesel engine combustion processes  

Science Journals Connector (OSTI)

Modern fuel injection systems for medium and heavy duty diesel engines combine the potential of very high injection pressures and flexible injection rate shaping. Against this background, the Commercial Vehicle Division of DaimlerChrysler AG, in close collaboration with DaimlerChrysler Research, performed principle tests to assess the influence of a flexible injection process, focusing on the effects of injection rate shaping. Besides pressure indexing, optical diagnostic methods and simulation techniques provided valuable insights in this study. Within this project, four different injection systems with different potentials of flexibility were investigated. New insights, such as the influence of needle opening and closing behaviour on nitric oxide emissions and the influence of injection rate shaping on soot emissions have been elaborated.

Thomas Koch; Uwe Gartner; Gerhard Konig

2006-01-01T23:59:59.000Z

34

Design and Implementation of Silicon Nitride Valves for Heavy Duty Diesel Engines  

Energy.gov (U.S. Department of Energy (DOE))

Poster presentation at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

35

Creation and Testing of the ACES Heavy Heavy-Duty Diesel Engine Test Schedule for Representative Measurement of Heavy-Duty Engine Emissions  

Energy.gov (U.S. Department of Energy (DOE))

Poster presentation at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

36

Implications to Heavy-Duty Diesel Emissions  

NLE Websites -- All DOE Office Websites (Extended Search)

ORNL/TM-200015 ORNL/TM-200015 MANAGED BY UT-BATTELLE FOR THE DEPARTMENT OF ENERGY A Vector Approach to Regression Analysis and Its Implications to Heavy-Duty Diesel Emissions November 2000 Prepared by H. 1. McAdams AccaMath Services Carrolton, Illinois R. W. Crawford R.W. Crawford Energy Systems Tucson, Arizona G. R. Hadder Oak Ridge National Laboratory Oak Ridge, Tennessee - UT-BATTELLE -. ORNL-27 (4.00) II ORNL/TM-200015 A VECTOR APPROACH TO REGRESSION ANALYSIS AND ITS APPLICATION TO HEAVY-DUTY DIESEL EMISSIONS H. T. McAdams AccaMath Services Carrollton, Illinois R. W. Crawford RWCrawford Energy Systems Tucson, Arizona G. R. Hadder Oak Ridge National Laboratory Oak Ridge, Tennessee November 2000 Prepared for Office of Energy Effkiency and Renewable Energy

37

Characterization of Particles from a Current Technology Heavy-Duty Diesel Engine  

Science Journals Connector (OSTI)

Particles emitted from a modern diesel engine had similar cluster structures to those from old engines but consisted of smaller basic particles when analyzed with a TEM. ... If this is a general trend, the current and proposed future emissions regulations may not be optimal for the protection of public health. ...

Ji Ping Shi; David Mark; Roy M. Harrison

2000-01-26T23:59:59.000Z

38

Prediction of In-Use Emissions of Heavy-Duty Diesel Vehicles from Engine Testing  

Science Journals Connector (OSTI)

Colorado Institute for Fuels and High Altitude Engine Research, Department of Chemical Engineering and Petroleum Refining, and Department of Environmental Science and Engineering, Colorado School of Mines, Golden, Colorado 80401-1887 ... The model has been validated using emissions tests conducted on three diesel vehicles on a chassis dynamometer and then on the engines removed from the vehicles tested on an engine dynamometer. ... They found that acceleration transients accounted for roughly 80% of the particulate mass emitted over the cycle but only 45% of the fuel consumption, although the peak carbon emissions were correlated with steep transients in fueling rates. ...

Janet Yanowitz; Michael S. Graboski; Robert L. McCormick

2002-01-11T23:59:59.000Z

39

SCRT Technology for Retrofit of Heavy-Duty Diesel Applications...  

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

of the Four-Way Emission Control SCRTTM System Application Experience with a Combined SCR and DPF Technology for Heavy Duty Diesel Retrofit Effects of Catalysts on Emissions...

40

Development of a variable controlled inertia charging system for naturally aspirated diesel engines in heavy duty trucks  

Science Journals Connector (OSTI)

An idea for controlling the inertia charging effect of diesel engines have been developed. Although the conventional inertia charging system can provide an effect in a narrow driving range, the new concept covers the whole range of engine speeds and load conditions. The Hino EK100 naturally aspirated 13.3 dm³ engine equipped with this variable controlled inertia charging system could meet the 1983 Japanese exhaust emission regulation (intensified to 470ppm of NOx on 6 Mode from the original value of 770ppm in 1974) while giving an improved fuel economy. This 199 kw engine is applied to the Hino heavy duty truck named the 'New Super Dolphin (Econo Diesel)'. One of the measures to offset the deterioration of engine performance caused by the reduction of exhaust gas emissions is to improve the combustion characteristics by increasing the excess air ratio. Although inertia charging can provide more excess air for the engine, this system has to have come fixed factors such as tuned pipe length and diameter etc. So the resonance zone is also fixed within a narrow engine speed range. And, moreover, out of such range, the air quantity has been reduced below that experienced without inertia charging. Thus variable control of the inertia charging with a mechanism to change the tuned pipe length is considered for this system. The intake air quantity is thus controlled to improve engine performance over a wide speed range at both full load and partial load. The engine can get a higher brake mean effective pressure of 0.90 MPa at peak torque and also improve fuel consumption even at partial load by reduced intake air quantity for minimizing gas exchange loss.

N. Eguchi; T. Kubodera; T. Otani; K. Usami

1986-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "heavy-duty diesel engines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Advanced Natural Gas Engine Technology for Heavy Duty Vehicles...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Advanced Natural Gas Engine Technology for Heavy Duty Vehicles Advanced Natural Gas Engine Technology for Heavy Duty Vehicles Natural gas engine technology has evolved to meet the...

42

Integrated Virtual Lab in Supporting Heavy Duty Engine and Vehicle...  

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

Virtual Lab in Supporting Heavy Duty Engine and Vehicle Emission Rulemaking Integrated Virtual Lab in Supporting Heavy Duty Engine and Vehicle Emission Rulemaking Presentation...

43

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

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

Adsorbers for Heavy Duty Truck Engines - Testing and Simulation NOx Adsorbers for Heavy Duty Truck Engines - Testing and Simulation This report provides the results of an...

44

Development of high temperature liquid lubricants for low-heat rejection heavy duty diesel engines  

SciTech Connect

Objective was to develop a liquid lubricant that will allow advanced diesel engines to operate at top ring reversal temperatures approaching 500 C and lubricant sump temperatures approaching 250 C. Base stock screening showed that aromatic esters and diesters has the lowest deposit level, compared to polyol esters, poly-alpha-olefins, or refined mineral oil of comparable viscosity. Classical aryl and alkyl ZDP antiwear additives are ineffective in reducing wear with aromatic esters; the phosphate ester was a much better antiwear additive, and polyol esters are more amenable to ZDP treatment. Zeolites and clays were evaluated for filtration.

Wiczynski, T.A.; Marolewski, T.A.

1993-03-01T23:59:59.000Z

45

Measuring "Real World" Heavy-Duty Diesel Emissions with a Mobile...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Measuring "Real World" Heavy-Duty Diesel Emissions with a Mobile Lab Measuring "Real World" Heavy-Duty Diesel Emissions with a Mobile Lab 2002 DEER Conference Presentation:...

46

Heavy Duty Diesels- The Road Ahead  

Energy.gov (U.S. Department of Energy (DOE))

This presentation gives a landscape picture of diesel engine technologies from the Daimler point of view.

47

Particle size distributions from heavy-duty diesel engine operated on low-sulfur marine fuel  

Science Journals Connector (OSTI)

Particulate matter (PM) emission characteristics of a four-stroke diesel engine were investigated while operating on low-sulfur marine gas oil. PM size distributions appeared to be unimodal (accumulation mode) with fairly constant count median diameter (CMD) of 55–65 nm for all test modes at maximum engine speed. The slightly bigger CMD of around 76 nm for unimodal particle size distributions at 1080 rpm at medium- and high-load conditions was observed. The bimodal size distribution was registered only at very low load with nuclei CMD being below 15 nm, accumulation CMD of around 82 nm and percentage of nanoparticles of around 65%. The study of primary dilution air temperature (PDT) effect revealed a significant reduction in total particle number for all operating conditions when PDT was increased from 30 °C to 400 °C. This also had an effect on particle CMD values and is believed to be due to evaporation of sulfuric acid with bound water and certain organic fractions that were formed during dilution process (at PDT = 30 °C). At very low load intermediate speed conditions, the heating of dilution air had a very little effect on the nucleation mode, which could suggest that it primarily consists of heavy hydrocarbons associated with lubrication oil.

Sergey Ushakov; Harald Valland; Jørgen B. Nielsen; Erik Hennie

2013-01-01T23:59:59.000Z

48

Combustion and emissions characteristics of high n-butanol/diesel ratio blend in a heavy-duty diesel engine and EGR impact  

Science Journals Connector (OSTI)

Abstract In this work, the combustion and emission fundamentals of high n-butanol/diesel ratio blend with 40% butanol (i.e., Bu40) in a heavy-duty diesel engine were investigated by experiment and simulation at constant engine speed of 1400 rpm and an IMEP of 1.0 MPa. Additionally, the impact of EGR was evaluated experimentally and compared with neat diesel fuel (i.e., Bu00). The results show that Bu40 has higher cylinder pressure, longer ignition delay, and faster burning rate than Bu00. Compared with Bu00, moreover, Bu40 has higher \\{NOx\\} due to wider combustion high-temperature region, lower soot due to local lower equivalence ratio distribution, and higher CO due to lower gas temperature in the late expansion process. For Bu40, EGR reduces \\{NOx\\} emissions dramatically with no obvious influence on soot. Meanwhile, there is no significant change in HC and CO emissions and indicated thermal efficiency (ITE) with EGR until EGR threshold is reached. When EGR rate exceeds the threshold level, HC and CO emissions increase dramatically, and ITE decreases markedly. Compared with Bu00, the threshold of Bu40 appears at lower EGR rate. Consequently, combining high butanol/diesel ratio blend with medium EGR has the potential to achieve ultra-low \\{NOx\\} and soot emissions simultaneously while maintaining high thermal efficiency level.

Zheng Chen; Zhenkuo Wu; Jingping Liu; Chiafon Lee

2014-01-01T23:59:59.000Z

49

Heavy-Duty Low-Temperature and Diesel Combustion & Heavy-Duty...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

and CFD Modeling of In-Cylinder Chemical and Physical Processes * Combine planar laser-imaging diagnostics in an optical heavy-duty engine with multi-dimensional computer...

50

Development of Urea Dosing System for 10 Liter Heavy Duty Diesel Engine Powered Vehicle  

Energy.gov (U.S. Department of Energy (DOE))

Poster presented at the 16th Directions in Engine-Efficiency and Emissions Research (DEER) Conference in Detroit, MI, September 27-30, 2010.

51

Rotating Liner Engine: Improving Efficiency of Heavy Duty Diesels by Significant Friction Reduction, and Extending the Life of Heavy Duty Engines.  

SciTech Connect

This report describes the work on converting a 4 cylinder Cummins ISB engine into a single cylinder Rotating Liner Engine functioning prototype that can be used to measure the friction benefits of rotating the cylinder liner in a high pressure compression ignition engine. A similar baseline engine was also prepared, and preliminary testing was done. Even though the fabrication of the single cylinder prototype was behind schedule due to machine shop delays, the fundamental soundness of the design elements are proven, and the engine has successfully functioned. However, the testing approach of the two engines, as envisioned by the original proposal, proved impossible due to torsional vibration resonance caused by the single active piston. A new approach for proper testing has been proposed,

Dardalis, Dimitrios

2013-12-31T23:59:59.000Z

52

Hydrocarbon Condensation in Heavy-Duty Diesel Exhaust  

Science Journals Connector (OSTI)

Hydrocarbon Condensation in Heavy-Duty Diesel Exhaust ... The semivolatile mass fraction of diesel exhaust particles was studied using size-resolved on-line techniques (DMA-ELPI; TDMA-ELPI). ... The measured size resolved values of mass transfer imply that condensation, or diffusion-limited mass transfer, plays a major role in driving the volatile matter to the diesel exhaust particles. ...

Jyrki Ristimäki; Kati Vaaraslahti; Maija Lappi; Jorma Keskinen

2007-08-10T23:59:59.000Z

53

Difficulty of Measuring Emissions from Heavy-Duty Engines Equipped...  

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

Difficulty of Measuring Emissions from Heavy-Duty Engines Equipped with SCR and DPF Difficulty of Measuring Emissions from Heavy-Duty Engines Equipped with SCR and DPF In reference...

54

A 1-D gas dynamics code for subsonic and supersonic flows applied to predict EGR levels in a heavy-duty diesel engine  

Science Journals Connector (OSTI)

The development of a 1-D gas dynamics code for unsteady flow in internal combustion (IC) engines as well as its validation and application for predicting residual gas fraction are introduced in this paper. Some new approaches are presented for modelling flows in diverging ducts and for treating boundary conditions. These include the use of flow resistance correlation to describe separated flows and flows in bends. Excellent agreement with analytical solutions and test results has been obtained when the code was validated with fundamental gas dynamic problems, including converging-diverging nozzle flows with and without shocks; Fanno and Rayleigh flows; the Riemann shock tube problem; and engine rig experiments for modelling flow with different property gases. The code has been applied satisfactorily to predict the gas exchange process of a spark ignition (SI) engine following exhaust blow-down and exhaust gas recirculation (EGR) levels in a heavy-duty diesel engine.

Yuhua Zhu; R.D. Reitz

1999-01-01T23:59:59.000Z

55

Effects of Catalysts on Emissions from Heavy-Duty Diesel Retrofits...  

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

Catalysts on Emissions from Heavy-Duty Diesel Retrofits for PM and NOX Control Effects of Catalysts on Emissions from Heavy-Duty Diesel Retrofits for PM and NOX Control The more...

56

ARB's Study of Emissions from Diesel and CNG Heavy-duty Transit...  

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

ARB's Study of Emissions from Diesel and CNG Heavy-duty Transit Buses ARB's Study of Emissions from Diesel and CNG Heavy-duty Transit Buses 2002 DEER Conference Presentation:...

57

Alternative Fuels Data Center: Heavy-Duty Diesel Vehicle Vouchers - San  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Heavy-Duty Diesel Heavy-Duty Diesel Vehicle Vouchers - San Joaquin Valley to someone by E-mail Share Alternative Fuels Data Center: Heavy-Duty Diesel Vehicle Vouchers - San Joaquin Valley on Facebook Tweet about Alternative Fuels Data Center: Heavy-Duty Diesel Vehicle Vouchers - San Joaquin Valley on Twitter Bookmark Alternative Fuels Data Center: Heavy-Duty Diesel Vehicle Vouchers - San Joaquin Valley on Google Bookmark Alternative Fuels Data Center: Heavy-Duty Diesel Vehicle Vouchers - San Joaquin Valley on Delicious Rank Alternative Fuels Data Center: Heavy-Duty Diesel Vehicle Vouchers - San Joaquin Valley on Digg Find More places to share Alternative Fuels Data Center: Heavy-Duty Diesel Vehicle Vouchers - San Joaquin Valley on AddThis.com... More in this section... Federal

58

Fuel Efficiency and Emissions Optimization of Heavy-Duty Diesel Engines using Model-Based Transient Calibration  

Energy.gov (U.S. Department of Energy (DOE))

Presentation given at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

59

Global market requirements to be met by diesel injection systems for heavy-duty and off-highway engines Part 1  

Science Journals Connector (OSTI)

This article by Robert Bosch GmbH examines the demands to be met by diesel injection systems in heavy-duty on-highway and off-highway applications, the latter being a segment that is characterised by lower gro...

Rudolf Maier; Ulrich Projahn; Klau Krieger

2002-09-01T23:59:59.000Z

60

Heavy-Duty Low-Temperature and Diesel Combustion Research (8748...  

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

Model for Partially PremixedLow-Temperature Diesel Combustion Based onIn-Cylinder Laser Diagnostics and Chemical Kinetics Modeling Heavy-Duty Low-Temperature and Diesel...

Note: This page contains sample records for the topic "heavy-duty diesel engines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

High Fuel Economy Heavy-Duty Truck Engine  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

contain any proprietary, confidential, or otherwise restricted information ACE060 High Fuel Economy Heavy Duty Truck Engine Overview Timeline October 2007 - October 2011 Barriers...

62

In-Use Emissions from Heavy-Duty Diesel Vehicles  

Science Journals Connector (OSTI)

A recent study that included 21 vehicles found that in general, g/mi emissions levels for regulated pollutants were highest for the CBD cycle, followed by the HDT cycle. ... Here g/mi NOx from the HDT and WVT driving cycles is plotted against NOx on the CBD cycle for all of the vehicles included in this paper that were tested on more than one of these driving cycles. ... The heavy-duty diesel EPM contained a higher proportion of OC than that from the light-duty diesels. ...

Janet Yanowitz; Robert L. McCormick; Michael S. Graboski

2000-01-29T23:59:59.000Z

63

Characterization of particle- and vapor-phase organic fraction emissions from a heavy-duty diesel engine equipped with a particle trap and regeneration controls  

SciTech Connect

The effects of a ceramic particle trap on the chemical and biological character of the exhaust from a heavy-duty diesel engine have been studied during steady-state operation and during periods of trap regeneration. Phase I of this project involved developing and refining the methods using a Caterpillar 3208 engine, and Phase II involved more detailed experiments with a Cummins LTA10-300 engine, which met Federal 1988 particulate matter standards, and a ceramic particle trap with built-in regeneration controls. During the Phase I experiments, samples wee collected at the Environmental Protection Agency (EPA)* steady-state mode 4 (50% load at intermediate speed). Varying the dilution ratio to obtain a constant filter-face temperature resulted in less variability in total particulate matter (TPM), particle-associated soluble organic fraction (SOF), solids (SOL), and polynuclear aromatic hydrocarbon (PAH) levels than sampling with a constant dilution ratio and allowing filter-face temperature to vary. A modified microsuspension Ames assay detected mutagenicity in the SOF samples, and in the semivolatile organic fraction extracted from XAD-2 resin (XAD-2 resin organic component, XOC) with at least 10 times less sample mass than the standard plate incorporation assay. Measurement techniques for PAH and nitro-PAH in the SOF and XOC also were developed during this portion of the project. For the Phase II work, two EPA steady-state rated speed modes were selected: mode 11 (25% load) and mode 9 (75% load). With or without the trap, filter-face temperatures were kept at 45 degrees +/- 2 degrees C, nitrogen dioxide (NO2) levels less than 5 parts per million (ppm), and sampling times less than 60 minutes. Particle sizes were determined using an electrical aerosol analyzer. Similar sampling methods were used when the trap was regenerated, except that a separate dilution tunnel and sampling system was designed and built to collect all of the regeneration emissions.

Bagley, S.T.; Gratz, L.D.; Leddy, D.G.; Johnson, J.H. (Michigan Technological Univ., Houghton, MI (United States))

1993-07-01T23:59:59.000Z

64

A Midwest Regional Inventory of Heavy-Duty Diesel Vehicle Emissions  

E-Print Network (OSTI)

A Midwest Regional Inventory of Heavy-Duty Diesel Vehicle Emissions by Christopher D. Dresser OF WISCONSIN - MADISON Abstract A Midwest Regional Inventory of Heavy-Duty Diesel Vehicle Emissions Christopher Studies This study presents a "bottom-up" emissions inventory for NOx, PM2.5, SO2, CO, and VOCs from heavy

Wisconsin at Madison, University of

65

Effect of Lubricant on the Formation of Heavy-Duty Diesel Exhaust Nanoparticles  

Science Journals Connector (OSTI)

Effect of Lubricant on the Formation of Heavy-Duty Diesel Exhaust Nanoparticles ... The effect of lubricants on nanoparticle formation in heavy-duty diesel exhaust with and without a continuously regenerating diesel particulate filter (CRDPF) is studied. ... The fine particles in diesel exhaust contain solid material produced during combustion process and volatile organic and sulfur compounds converted to particle phase during the exhaust gas cooling and dilution. ...

Kati Vaaraslahti; Jorma Keskinen; Barouch Giechaskiel; Anu Solla; Timo Murtonen; Hannu Vesala

2005-09-22T23:59:59.000Z

66

Control of NOx and PM emissions from SCR-equipped 2010 compliant heavy duty diesel engine over different engine-out calibrations.  

E-Print Network (OSTI)

??Diesel engines constitute a valuable solution to the growing demand for higher fuel efficiencies, especially in relation to the rapid growth of fuel prices in… (more)

Ardanese, Raffaello.

2008-01-01T23:59:59.000Z

67

Effects of the injection parameters and compression ratio on the emissions of a heavy-duty diesel engine  

Science Journals Connector (OSTI)

Homogenous charge compression ignition (HCCI) cases are compared for improvements on the combustion chamber design of the engine to achieve near zero particulate matter (PM) and NOx emissions. Therefore combustion simulations of the engine have been performed to find out emission generation in the cylinder. The interaction of air motion with high-pressure fuel spray has also been analysed. Finally, a comparison has been made considering the performance of the engine for various configurations such as compression ratio, injection timing, and cone angle. The results are widely in agreement qualitatively with the previous similar experimental and computational studies in the literature.

Mustafa Yilmaz; Hasan Köten; M. Zafer Gul

2012-01-01T23:59:59.000Z

68

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine Search  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Heavy-Duty Vehicle and Heavy-Duty Vehicle and Engine Search to someone by E-mail Share Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine Search on Facebook Tweet about Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine Search on Twitter Bookmark Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine Search on Google Bookmark Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine Search on Delicious Rank Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine Search on Digg Find More places to share Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine Search on AddThis.com... Heavy-Duty Vehicle and Engine Search Search our database to find and compare specific vehicles, engines, or hybrid propulsion systems and generate printable reports.

69

Emissions from In-Use NG, Propane, and Diesel Fueled Heavy Duty Vehicles  

Energy.gov (U.S. Department of Energy (DOE))

Emissions tests of in-use heavy-duty vehicles showed that, natural gas- and propane-fueled vehicles have high emissions of NH3 and CO, compared to diesel vehicles, while meeting certification requirements

70

Natural Gas-optimized Advanced Heavy-duty Engine  

E-Print Network (OSTI)

Natural Gas-optimized Advanced Heavy-duty Engine Transportation Research PIER Transportation of natural gas vehicles as a clean alternative is currently limited to smaller engine displacements and spark ignition, which results in lower performance. A large displacement natural gas engine has

71

SCRT Technology for Retrofit of Heavy-Duty Diesel Applications  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

SCRT system that can simultaneously reduce the PM and NOx emissions from a diesel engine in urban applications for the Worldwide market. The system will work on electronically...

72

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine Data  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Data Collection Methods to someone by E-mail Data Collection Methods to someone by E-mail Share Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine Data Collection Methods on Facebook Tweet about Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine Data Collection Methods on Twitter Bookmark Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine Data Collection Methods on Google Bookmark Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine Data Collection Methods on Delicious Rank Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine Data Collection Methods on Digg Find More places to share Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine Data Collection Methods on AddThis.com... Heavy-Duty Vehicle and Engine Data Collection Methods To maintain the Heavy-Duty Vehicle and Engine Search tool, the National

73

Efficient Use of Natural Gas Based Fuels in Heavy-Duty Engines...  

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

Use of Natural Gas Based Fuels in Heavy-Duty Engines Efficient Use of Natural Gas Based Fuels in Heavy-Duty Engines Natural gas and other liquid feedstocks for transportation fuels...

74

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

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

Heavy-Duty Truck Engine High Fuel Economy Heavy-Duty Truck Engine 2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation...

75

REAL-WORLD EFFICACY OF HEAVY DUTY DIESEL TRUCK NOX AND PM EMISSIONS CONTROLS  

E-Print Network (OSTI)

are International. b DOC = Diesel Oxidation Catalyst; DPF = Diesel Particulate Filter; EGR = Exhaust GasREAL-WORLD EFFICACY OF HEAVY DUTY DIESEL TRUCK NOX AND PM EMISSIONS CONTROLS Gurdas Sandhu H 26-28, 2012 #12;2 Objectives 1. Quantify inter-run variability in exhaust emission rates 2. Assess

Frey, H. Christopher

76

Emissions Benefits From Renewable Fuels and Other Alternatives for Heavy-Duty Vehicles  

E-Print Network (OSTI)

Diesel Fuel: Trade-off between NOx, Particulate Emission, and Fuel Consumption of a Heavy Duty Engine.

Hajbabaei, Maryam

2013-01-01T23:59:59.000Z

77

High temperature solid lubricant materials for heavy duty and advanced heat engines  

SciTech Connect

Advanced engine designs incorporate higher mechanical and thermal loading to achieve efficiency improvements. This approach often leads to higher operating temperatures of critical sliding elements (e.g. piston ring/cylinder wall contacts and valve guides) which compromise the use of conventional and even advanced synthetic liquid lubricants. For these applications solid lubricants must be considered. Several novel solid lubricant composites and coatings designated PS/PM200 have been employed to dry and marginally oil lubricated contacts in advanced heat engines. These applications include cylinder kits of heavy duty diesels, and high temperature sterling engines, sidewall seals of rotary engines and various exhaust valve and exhaust component applications. The following paper describes the tribological and thermophysical properties of these tribomaterials and reviews the results of applying them to engine applications. Other potential tribological materials and applications are also discussed with particular emphasis to heavy duty and advanced heat engines.

DellaCorte, C.; Wood, J.C.

1994-10-01T23:59:59.000Z

78

Evaluation of NTE Windows and a Work-Based Method to Determine In-Use Emissions of a Heavy-Duty Diesel Engine  

Energy.gov (U.S. Department of Energy (DOE))

Poster presentation at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

79

Indiana: Improving Diesel Engine Performance for Trucks  

Office of Energy Efficiency and Renewable Energy (EERE)

Cummins, the world's largest diesel engine manufacturer, received funds from EERE to research advanced engine technology for heavy-duty and light-duty vehicles.

80

Combustion Commonality and Differences Between HSDI and Heavy Duty Truck Engines  

SciTech Connect

Experimental understanding of the diesel spray and combustion process at the fundamental level has helped advance the virtual lab simulation tools. The computational fluid dynamics (CFD)-based simulation has been globally verified in many engines, providing substantial credibility to the use of this technology in advanced engine development. This paper highlights the common aspects and differences between the smallbore HSDI and the larger displacement heavy-duty truck engine spray and combustion processes. Implications for combustion system strategies will be delineated. Detroit Diesel integrated ''Wired'' approach will be explained with pointers towards future tool enhancements.

Chen, Rong

2000-08-20T23:59:59.000Z

Note: This page contains sample records for the topic "heavy-duty diesel engines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Heavy-Duty Low-Temperature and Diesel Combustion & Heavy-Duty...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

in the following eleven slides Current Specific Objectives: (SNL) Understand the spatial and temporal evolution of soot formation in low-temperature diesel combustion...

82

Implications of Exhaust Gas, CO2, and N2 Recirculation on Heavy-Duty Diesel Engine Performance, Soot, and NO Emissions: A Comparative Study  

Science Journals Connector (OSTI)

Marine Internal Combustion Engines Laboratory, Section of Naval Architecture & Marine Engineering, Hellenic Naval Academy, End of Hatzikiriakou Ave., 18539 Piraeus, Greece ... (1-3) Hence, under certain conditions, the successful implementation of various internal measures in HD diesel engines may lead to their compliance with current and near-future emission standards, thus diminishing the need for complex and costly technologies of after-engine pollution control. ... (16, 17) Ladommatos et al.(11-14) in their fundamental work successfully managed to isolate the three aforementioned major effects of EGR on diesel engine combustion characteristics and NOx emissions, revealing that, under constant inlet pressure, dilution of the charge mixture is the most influential mechanism on the reduction of engine-out NOx. ...

Dimitrios T. Hountalas; Spiridon I. Raptotasios; Theodoros C. Zannis

2013-07-15T23:59:59.000Z

83

Multivariate analysis of exhaust emissions from heavy-duty diesel fuels  

SciTech Connect

Particulate and gaseous exhaust emission phases from running 10 diesel fuels on two makes of heavy-duty diesel engines were analyzed with respect to 63 chemical descriptors. Measurements for one of the fuels were also made in the presence of an exhaust aftertreatment device. The variables included 28 polycyclic aromatic compounds (PAC), regulated pollutants (CO, HC, NO{sub x}, particles), and 19 other organic and inorganic exhaust emission components. Principal components analysis (PCA) was applied for the statistical exploration of the obtained data. In addition, relationships between chemical (12 variables) and physical (12 variables) parameters of the fuels to the exhaust emissions were derived using partial least squares (PLS) regression. Both PCA and PLS models were derived for the engine makes separately. The PCA showed that the most descriptive exhaust emission factors from these diesel fuels included fluoranthene as a representative of PAC, the regulated pollutants, sulfates, methylated pyrenes, and monoaromatics. Exhaust emissions were significantly decreased in the presence of an exhaust aftertreatment device. Both engine makes exhibited similar patterns of exhaust emissions. Discrepancies were observed for the exhaust emissions of CO{sub 2} and oil-derived soluble organic fractions, owing to differences in engine design. The PLS analysis showed a good correlation of exhaust emission of the regulated pollutants and PAC with the contents of PAC in the fuels and the fuel aromaticity. 41 refs., 6 figs., 6 tabs.

Sjoegren, M.; Ulf, R.; Li, H.; Westerholm, R. [Stockholm Univ. (Sweden)

1996-01-01T23:59:59.000Z

84

Evaluation of Fuel Cell Auxiliary Power Units for Heavy-Duty Diesel Trucks  

E-Print Network (OSTI)

diesel fuel consumption, lubricant changes, and enginefuel consumption, and costs associated with diesel engineDiesel Idling diesel consumption Diesel fuel cost Lubricant cost Engine

2002-01-01T23:59:59.000Z

85

Heavy-Duty Low-Temperature and Diesel Combustion & Heavy-Duty...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

geometry more similar to metal engines (expense limit) - Compare with metal engine data where possible (industry partners) - Identify mechanisms and critical requirements...

86

Alternative fuels for low emissions and improved performance in CI and heavy duty engines  

SciTech Connect

Contents include: Limited durability of the diesel engine with a dual-fuel system on neat sunflower oil; Analysis and testing of a high-pressure micro-compressor; Spark-assisted alcohol operation in a low heat rejection engine; Combustion improvement of heavy-duty methanol engine by using autoignition system; Clean Fleet Alternative Fuels demonstration project; Vehicle fuel economy -- the Clean Fleet Alternative Fuels project; Safety and occupational hygiene results -- Clean Fleet Alternative Fuels project; Vehicle reliability and maintenance -- Clean Fleet Alternative Fuels project; Flammability tests of alcohol/gasoline vapors; Flame luminosity enhancement of neat methanol fuel by non-aromatic hydrocarbon additives; and more.

NONE

1995-12-31T23:59:59.000Z

87

Fuel Effects on Advanced Combustion: Heavy-Duty Optical-Engine...  

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

More Documents & Publications Fuel Effects on Advanced Combustion: Heavy-Duty Optical-Engine Research Fuels and Combustion Strategies for High-Efficiency Clean-Combustion...

88

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine...  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Fuel Type: Hybrid - Diesel Electric Maximum Seating: 2 Hybrid System(s): Eaton - Diesel Electric Hybrid Additional Description: Class 7 T370 is powered by a Cummins diesel engine...

89

Effect of Engine-Out NOx Control Strategies on PM Size Distribution in Heavy-Duty Diesel Engines Developed for 2010  

Energy.gov (U.S. Department of Energy (DOE))

A distinct relationship was found between engine-out and SCR-out PM distributions for single-mode testing.

90

Vehicle Technologies Office Merit Review 2014: Heavy-Duty Low-Temperature and Diesel Combustion & Heavy-Duty Combustion Modeling  

Energy.gov (U.S. Department of Energy (DOE))

Presentation given by Sandia National Laboratories at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about heavy-duty low...

91

Heavy-duty diesel vehicle Nox? aftertreatment in 2010 : the infrastructure and compliance challenges of urea-SCR  

E-Print Network (OSTI)

Increasingly stringent heavy-duty vehicle emission regulations are prompting the use of PM and NOx aftertreatment systems in the US, the EU and Japan. In the US, the EPA Highway Diesel Rule, which will be fully implemented ...

Bodek, Kristian M

2008-01-01T23:59:59.000Z

92

Natural Oils - The Next Generation of Diesel Engine Lubricants...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Aftertreatment with a Oil Conditioning Filter Effect of Exhaust Gas Recirculation (EGR) on Diesel Engine Oil - Impact on Wear Development of High Performance Heavy Duty Engine Oils...

93

08FFL-0020Influence of High Fuel Rail Pressure and Urea Selective Catalytic Reduction on PM Formation in an Off-Highway Heavy-Duty Diesel Engine  

SciTech Connect

The influence of fuel rail pressure (FRP) and urea-selective catalytic reduction (SCR) on particulate matter (PM) formation is investigated in this paper along with notes regarding the NOx and other emissions. Increasing FRP was shown to reduce the overall soot and total PM mass for four operating conditions. These conditions included two high speed conditions (2400 rpm at 540 and 270 Nm of torque) and two moderated speed conditions (1400 rpm at 488 and 325 Nm). The concentrations of CO2 and NOx increased with fuel rail pressure and this is attributed to improved fuel-air mixing. Interestingly, the level of unburned hydrocarbons remained constant (or increased slightly) with increased FRP. PM concentration was measured using an AVL smoke meter and scanning mobility particle sizer (SMPS); and total PM was collected using standard gravimetric techniques. These results showed that the smoke number and particulate concentrations decrease with increasing FRP. However the decrease becomes more gradual as very high rail pressures. Additionally, the total PM decreased with increasing FRP; however, the soluble organic fraction (SOF) reaches a maximum after which it declines with higher rail pressure. The total PM was collected for the two 1400 rpm conditions downstream of the engine, diesel oxidation catalyst, and a urea-SCR catalyst. The results show that significant PM reduction occurs in the SCR catalyst even during high rates of urea dosage. Analysis of the PM indicates that residual SOF is burned up in the SCR catalyst.

Kass, Michael D [ORNL; Domingo, Norberto [ORNL; Storey, John Morse [ORNL; Lewis Sr, Samuel Arthur [ORNL

2008-01-01T23:59:59.000Z

94

Global market requirements to be met by diesel injection systems for heavy-duty and off-highway engines Part 2  

Science Journals Connector (OSTI)

This article by Robert Bosch GmbH examines the demands to be met by diesel injection systems in heavyduty on-highway and off-highway applications, the latter being a segment that is characterized by lower grow...

Rudolf Maier; Ulrich Projahn; Klaus Krieger

2002-10-01T23:59:59.000Z

95

Heavy-duty low-emission engine from Stork-Waertsilae  

SciTech Connect

A new heavy-duty medium-speed diesel engine range has been announced by the Waertsilae Diesel Group. A six-cylinder in-line version was shown for the first time at Europort `95. The new Waertsilae 26 power unit, of modular design, was developed at Stork-Waertsilae`s plant at Zwolle, the Netherlands. It is aimed at a wide variety of applications including marine propulsion and auxiliary use, power generation and industrial operations. The 26 engine filled a gap in the Stork-Waertsilae range and is very much a response to market demands for a power unit with high reliability, low emissions and good fuel economy. Our design approach is aimed at easy space-saving installation, multiple fuel choices and an overall low operating cost per kilowatt for the user.

Mullins, P.

1995-12-01T23:59:59.000Z

96

Design Challenges of Locomotive Diesel Engines | Department of...  

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

Control Technology MobiCleanTM Soot Filter for Diesel Locomotiive Applications Integrated Engine and Aftertreatment Technology Roadmap for EPA 2010 Heavy-duty Emissions Regulations...

97

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine...  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

T660 Tractor Application: Tractor Fuel Types: CNG, LNG Power Source(s): Cummins Westport - ISX12 G Additional Description: A Class 8 heavy-duty truck designed for on-highway...

98

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine...  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

82 Application: Tractor Fuel Types: CNG, LNG Power Source(s): Cummins Westport - ISL G 8.9L Additional Description: A heavy-duty truck designed for regional-haul applications....

99

New Demands on Heavy Duty Engine Management Systems  

Energy.gov (U.S. Department of Energy (DOE))

The purpose of this research was to investigate the potential of emissions-based process control to meet future heavy-duty emissions legislation by identifying suitable actuated variables and developing hardware and related controllers.

100

Evaluation of Fuel Cell Auxiliary Power Units for Heavy-Duty Diesel Trucks  

E-Print Network (OSTI)

diesel fuel consumption, lubricant changes, and enginefuel consumption, and costs associated with diesel enginediesel consumption Diesel fuel cost Lubricant cost Engine

2002-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "heavy-duty diesel engines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Difficulty of Measuring Emissions from Heavy-Duty Engines Equipped with SCR and DPF  

Energy.gov (U.S. Department of Energy (DOE))

In reference to legacy heavy-duty vehicles, emissions and fuel use are less closely related to immediate engine load than was the case without the use of aftertreatments.

102

Fuel Effects on Advanced Combustion: Heavy-Duty Optical-Engine...  

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

R&D Annual Progress Report Vehicle Technologies Office: 2008-2009 Fuels Technologies R&D Progress Report Fuel Effects on Advanced Combustion: Heavy-Duty Optical-Engine Research...

103

Regulated Emissions from Biodiesel Tested in Heavy-Duty Engines Meeting 2004 Emission Standards  

SciTech Connect

Biodiesel produced from soybean oil, canola oil, yellow grease, and beef tallow was tested in two heavy-duty engines. The biodiesels were tested neat and as 20% by volume blends with a 15 ppm sulfur petroleum-derived diesel fuel. The test engines were the following: 2002 Cummins ISB and 2003 DDC Series 60. Both engines met the 2004 U.S. emission standard of 2.5 g/bhp-h NO{sub x}+HC (3.35 g/kW-h) and utilized exhaust gas recirculation (EGR). All emission tests employed the heavy-duty transient procedure as specified in the U.S. Code of Federal Regulations. Reduction in PM emissions and increase in NO{sub x} emissions were observed for all biodiesels in all engines, confirming observations made in older engines. On average PM was reduced by 25% and NO{sub x} increased by 3% for the two engines tested for a variety of B20 blends. These changes are slightly larger in magnitude, but in the same range as observed in older engines. The cetane improver 2-ethyl hexyl nitrate was shown to have no measurable effect on NO{sub x} emissions from B20 in these engines, in contrast to observations reported for older engines. The effect of intake air humidity on NO{sub x} emissions from the Cummins ISB was quantified. The CFR NO{sub x}/humidity correction factor was shown to be valid for an engine equipped with EGR, operating at 1700 m above sea level, and operating on conventional or biodiesel.

McCormick, R. L.; Tennant, C. J.; Hayes, R. R.; Black, S.; Ireland, J.; McDaniel, T.; Williams, A.; Frailey, M.; Sharp, C. A.

2005-11-01T23:59:59.000Z

104

The Road to Improved Heavy Duty Fuel Economy  

Energy.gov (U.S. Department of Energy (DOE))

Heavy duty diesel engine fuel economy is improved by lowering the viscosity of engine lubricant, especially when engine speed is increased or load is decreased, as in long distance on-highway driving

105

Ultrafine PM Emissions from Natural Gas, Oxidation-Catalyst Diesel, and Particle-Trap Diesel Heavy-Duty Transit Buses  

Science Journals Connector (OSTI)

In urban areas, transit buses are a significant source of heavy-duty vehicle traffic, and many municipalities, including Los Angeles, Sacramento, Cleveland, and Atlanta, have recently modified their fleets to compressed natural gas (CNG) as the “clean” alternative to conventional uncontrolled diesel vehicles to meet increasingly strict particulate matter (PM) air quality regulations. ... ARB's mission is to promote and protect public health, welfare, and ecological resources through effective reduction of air pollutants while recognizing and considering effects on the economy. ...

Britt A. Holmén; Alberto Ayala

2002-11-05T23:59:59.000Z

106

Engine-External HC-Dosing for Regeneration of Diesel Particulate...  

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

for Heavy Duty and NRMM According to Annex XXVII StVZO This presentation discusses how a diesel particulate filter can be integrated in the exhaust piping of a heavy-duty engine....

107

Development of a Heavy-Duty Diesel Modal Emissions and Fuel Consumption Model  

E-Print Network (OSTI)

fact that the diesel engines fuel consumption and emissionsDiesel Modal Emissions and Fuel Consumption Model Connection to engineDiesel Modal Emissions and Fuel Consumption Model unit; 5) engine-

Barth, Matthew; Younglove, Theodore; Scora, George

2005-01-01T23:59:59.000Z

108

Analysis of different modes of low temperature combustion by ultra-high EGR and modulated kinetics in a heavy duty diesel engine  

Science Journals Connector (OSTI)

Abstract Simulation is performed to analyze the characteristics of different modes of low temperature combustion (LTC), by ultra-high exhaust gas recirculation (EGR) (UHE) and modulated kinetics (MK) in a CI engine. The physical models and numerical methods in KIVA-CMC are validated against measured pressure traces and NOx, CO and PM emissions for selected test cases. It is shown that the two LTC modes involve different fuel evaporation histories and turbulent flame structures in the tested ranges of EGR rates and injection timings. LTC is confirmed with simultaneous reduction of \\{NOx\\} and PM above the critical EGR rate and SOI timing in the UHE and the MK mode respectively. The UHE mode at the EGR rate 68% shows conditional temperature between 1000 K and 1600 K, while the MK mode at the EGR rate 48% shows conditional temperature distribution between 1000 K and 2200 K. It is shown that the temperature is the most sensitive parameter to suppress \\{NOx\\} in the UHE mode, while a longer ignition delay leads to more homogeneous mixture to result in reduced CO and PM in the MK mode.

Youngjae Lee; Kang Y. Huh

2014-01-01T23:59:59.000Z

109

Heavy-Duty Diesel Vehicle Fuel Consumption Modeling Based on Road Load and Power Train Parameters  

E-Print Network (OSTI)

Injection Diesel Engine Fuel Consumption”, SAE 971142, 11.engine load, engine speed, and fuel consumption. The tirevehicle speed, engine speed, fuel consumption, engine load,

Giannelli, R; Nam, E K; Helmer, K; Younglove, T; Scora, G; Barth, M

2005-01-01T23:59:59.000Z

110

Experimental investigation on the characteristics of diesel oxygenated fuel blends in a di diesel engine using two spring split injection;.  

E-Print Network (OSTI)

??Diesel engines are efficient prime movers for heavy duty vehicles, so they have attracted many automobile and research institutions for their use as main prime… (more)

Kumaresan M

2013-01-01T23:59:59.000Z

111

Heavy-Duty Diesel Vehicle Fuel Consumption Modeling Based on Road Load and Power Train Parameters  

E-Print Network (OSTI)

Diesel Engines Using Four Fuels,” Southwest Research Institute, 25. J.B.Heywood, “Internal Combustion Engine Fundamentals”,

Giannelli, R; Nam, E K; Helmer, K; Younglove, T; Scora, G; Barth, M

2005-01-01T23:59:59.000Z

112

Piston ring coating developments for use in tomorrow`s heavy duty engines  

SciTech Connect

Extended life and higher performance are being required for heavy duty diesel engines which have to run more than 1 million kilometers. Reducing the amount of exhaust gas pollutants from diesel engines is now a social concern from the viewpoints of an environmental conservation, air pollution and influence on human health. In order to lower the amount of particulate emission, mainly composed of unburnt fuel and oil, it is desirable to reduce oil consumption which depends largely upon the sliding surface profiles of piston top rings. In addition to some new nitriding treatment or hard chromium plating techniques, plasma spray coatings are largely developed in Perfect Circle Europe, because of the wide range of coating materials which ensure numerous tribological properties. Powder formulations and spraying parameters are of great importance to reduce the piston ring and the liner wear, to improve the adhesive and cohesive qualities of coatings and to increase their tearing and corrosive resistances. Spraying parameters and the utilized plasma gas also play a large part in obtaining coatings of high quality and in increasing the deposition efficiency. Tests on idealized samples coupled with engine tests help to characterize the tribological behavior of some molybdenum based coatings.

Delaet, M. [Perfect Circle Europe, Poissy (France); Coddet, C. [LERMPS-IPSe, Sevenans (France)

1996-12-31T23:59:59.000Z

113

Investigation on combustion characteristics of crude rice bran oil methyl ester blend as a heavy duty automotive engine fuel  

Science Journals Connector (OSTI)

In the present work, an attempt was made to test the suitability of crude rice bran oil methyl ester (CRBME) blend as a heavy duty automotive engine fuel. A four stroke, six cylinder direct injection 117.6 kW turbo-charged compression ignition (CI) engine was used for the work. The operation of the engine with CRBME blend showed that the peak pressure increased with lower maximum rate of pressure rise and maximum heat release rate with shorter delay period. Burning rate of the CRBME blend was slower and required a higher crank angle to complete the combustion cycle when compared to diesel. The brake thermal efficiency of the CRBME blend was lower than that of diesel at all speeds except at 2300rpm. As the measured combustion and performance parameters for CRBME blend differs only by a smaller magnitude when compared with diesel, this investigation ensures the suitability of the CRBME blend as fuel for heavy duty automotive engine without any design modifications [Received: August 12, 2010; Accepted: August 29, 2010

S. Saravanan; G. Nagarajan; S. Sampath

2011-01-01T23:59:59.000Z

114

Development of a Heavy-Duty Diesel Modal Emissions and Fuel Consumption Model  

E-Print Network (OSTI)

that the diesel engines fuel consumption and emissions doEmissions and Fuel Consumption Model engine manufacturersEmissions and Fuel Consumption Model Connection to engine

Barth, Matthew; Younglove, Theodore; Scora, George

2005-01-01T23:59:59.000Z

115

Evaluation of the European PMP Methodologies Using Chassis Dynamometer and On-road Testing of Heavy-duty Vehicles  

Energy.gov (U.S. Department of Energy (DOE))

Critical evaluation of new protocol for measurement of heavy-duty diesel engine particulate matter emissions proposed for potential use in California.

116

Heavy-duty fleet test evaluation of recycled engine coolant  

SciTech Connect

A 240,000 mile (386,232 km) fleet test was conducted to evaluate recycled engine coolant against factory fill coolant. The fleet consisted of 12 new Navistar International Model 9600 trucks equipped with Detroit Diesel Series 60 engines. Six of the trucks were drained and filled with the recycled engine coolant that had been recycled by a chemical treatment/filtration/reinhibited process. The other six test trucks contained the factory filled coolant. All the trucks followed the same maintenance practices which included the use of supplemental coolant additives. The trucks were equipped with metal specimen bundles. Metal specimen bundles and coolant samples were periodically removed to monitor the cooling system chemistry. A comparison of the solution chemistry and metal coupon corrosion patterns for the recycled and factory filled coolants is presented and discussed.

Woyciesjes, P.M.; Frost, R.A. [Prestone Products Corp., Danbury, CT (United States). Coolant Group

1999-08-01T23:59:59.000Z

117

Design of Integrated Laboratory and Heavy-Duty Emissions Testing...  

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

of Integrated Laboratory and Heavy-Duty Emissions Testing Center Design of Integrated Laboratory and Heavy-Duty Emissions Testing Center Both simulated and actual diesel emissions...

118

Wear and wear mechanism simulation of heavy-duty engine intake valve and seat inserts  

SciTech Connect

A silicon-chromium alloy frequently used for heavy-duty diesel engine intake valves was tested against eight different insert materials with a valve seat wear simulator. Wear resistance of these combinations was ranked. For each test, the valve seat temperature was controlled at approximately 510 C, the number of cycles was 864,000 (or 24 h), and the test load was 17,640 N. The combination of the silicon-chromium valve against a cast iron insert produced in the least valve seat wear, whereas a cobalt-base alloy insert produced the highest valve seat wear. In the overall valve seat recession ranking, however, the combination of the silicon-chromium valve and an iron-base chromium-nickel alloy insert had the least total seat recession, whereas the silicon-chromium valve against cobalt-base alloy, cast iron, and nickel-base alloy inserts had significant seat recession. Hardness and microstructure compatibility of valve and insert materials are believed to be significant factors in reducing valve and insert wear. The test results indicate that the mechanisms of valve seat and insert wear are a complex combination of adhesion and plastic deformation. Adhesion was confirmed by material transfer, while plastic deformation was verified by shear strain (or radial flow) and abrasion. The oxide films formed during testing also played a significant role. The prevented direct metal-to-metal contact and reduced the coefficient of friction on seat surfaces, thereby reducing adhesive and deformation-controlled wear.

Wang, Y.S.; Narasimhan, S.; Larson, J.M.; Schaefer, S.K. [Eaton Corp., Marshall, MI (United States). Engine Components Operations] [Eaton Corp., Marshall, MI (United States). Engine Components Operations

1998-02-01T23:59:59.000Z

119

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine...  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Motor Coach Industries - D4500 CT Hybrid Commuter Coach Application: Bus - Transit Fuel Types: CNG, Hybrid - Diesel Electric Maximum Seating: 57 Power Source(s): Cummins Westport -...

120

Development of High Performance Heavy Duty Engine Oils  

Energy.gov (U.S. Department of Energy (DOE))

FAME biodiesel will likely remain a part of the global diesel pool for the coming years and the use of biodiesel can lead to lubrication issues.

Note: This page contains sample records for the topic "heavy-duty diesel engines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Roadmapping Engine Technology for Post-2020 Heavy Duty Vehicles  

Energy.gov (U.S. Department of Energy (DOE))

Discusses Detroit Diesel collaborative multi-year technology program which includes systematic experimental and analytical assessment of enabling technologies for post-2020 NAFTA line haul trucks

122

Cleaning Up Diesel Engines  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Other Mobile Sources Off-Road Diesel Equipment Heavy-Duty Diesel Trucks Diesel Ships, Trains PM 2.5 Emissions Trend PM 2.5 Emissions Trend California Emissions From the 2005...

123

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine...  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

60BRT Application: Bus - Transit Fuel Types: CNG, LNG, Hybrid - Diesel Electric Maximum Seating: 43 Power Source(s): Cummins Westport - ISL G 8.9L Cummins - ISL 8.9L Hybrid...

124

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine...  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

E-Z Rider II BRT Application: Bus - Transit Fuel Types: CNG, LNG, Hybrid - Diesel Electric Maximum Seating: 33 Power Source(s): Cummins Westport - ISL G 8.9L Cummins - ISB 6.7L...

125

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine...  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

North American Bus Industries - 42BRT Application: Bus - Transit Fuel Types: CNG, LNG, Hybrid - Diesel Electric Maximum Seating: 43 Power Source(s): Cummins Westport - ISL G 8.9L...

126

THE EFFECTS OF BIODIESEL BLENDS AND ARCO EC-DIESEL ON EMISSIONS from LIGHT HEAVY-DUTY DIESEL VEHICLES  

SciTech Connect

Chassis dynamometer tests were performed on 7 light heavy-duty diesel trucks comparing the emissions of a California diesel fuel with emissions from 4 other fuels: ARCO EC-diesel (EC-D) and three 20% biodiesel blends (1 yellow grease and 2 soy-based). The EC-D and the yellow grease biodiesel blend both showed significant reductions in THC and CO emissions over the test vehicle fleet. EC-D also showed reductions in PM emission rates. NOx emissions were comparable for the different fuel types over the range of vehicles tested. The soy-based biodiesel blends did not show significant or consistent emissions differences over all test vehicles. Total carbon accounted for more than 70% of the PM mass for 4 of the 5 sampled vehicles. Elemental and organic carbon ratios varied significantly from vehicle-to-vehicle but showed very little fuel dependence. Inorganic species represented a smaller portion of the composite total, ranging from 0.2 to 3.3% of the total PM. Total PAH emissions ranged from approximately 1.8 mg/mi to 67.8 mg/mi over the different vehicle/fuel combinations representing between 1.6 and 3.8% of the total PM mass.

Durbin, Thomas

2001-08-05T23:59:59.000Z

127

High Efficiency Clean Combustion for Heavy-Duty Engine  

Energy.gov (U.S. Department of Energy (DOE))

Explore advancements in engine combustion systems using high-efficiency clean combustion (HECC) techniques to minimize engine-out emissions while optimizing fuel economy.

128

Engine and Reactor Evaluations of HC-SCR for Diesel NOx Reduction...  

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

Engine and Reactor Evaluations of HC-SCR for Diesel NOx Reduction Engine and Reactor Evaluations of HC-SCR for Diesel NOx Reduction Focus is the heavy duty, US dynamometer...

129

The ethanol heavy-duty truck fleet demonstration project  

SciTech Connect

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

NONE

1997-06-01T23:59:59.000Z

130

Transient chassis cycles for heavy duty trucks and tractors  

Science Journals Connector (OSTI)

The objective of this paper is to present a method for developing a chassis test for a specific and typical class of vehicles which will mirror the Federal Test Procedure (FT) as closely as possible for purposes of emissions measurement. Emphasis will be placed on development of a preliminary heavy duty chassis cycle for specific over-the-road class 8 trucks which will reflect the FTP currently imposed on heavy duty diesel engines.

Nigel Clark; David McKain

1995-01-01T23:59:59.000Z

131

Just the Basics: Diesel Engine  

NLE Websites -- All DOE Office Websites (Extended Search)

Today's direct-injection diesel Today's direct-injection diesel engines are more rugged, powerful, durable, and reliable than gasoline engines, and use fuel much more efficiently, as well. Diesel Engines Yesterday, Today, and Tomorrow Diesels are workhorse engines. That's why you find them powering heavy- duty trucks, buses, tractors, and trains, not to mention large ships, bulldozers, cranes, and other construction equipment. In the past, diesels fit the stereotype of muscle-bound behe- moths. They were dirty and sluggish, smelly and loud. That image doesn't apply to today's diesel engines, however, and tomorrow's diesels will show even greater improvements. They will be even more fuel efficient, more flexible in the fuels they can use, and also much cleaner in emissions. How Diesel Engines Work

132

A European Perspective of EURO 5/U.S. 07 Heavy-Duty Engine Technologie...  

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

Presentation: Volvo Powertrain 2004deerfayolle.pdf More Documents & Publications SCR Systems for Heavy Duty Trucks: Progress Towards Meeting Euro 4 Emission Standards in...

133

Diesel Soot Oxidation with NO2:? Engine Experiments and Simulations  

Science Journals Connector (OSTI)

Diesel Soot Oxidation with NO2:? Engine Experiments and Simulations ... Particulate filtration in the exhaust system of diesel engines is increasingly gaining in importance for both light- and heavy-duty applications. ... The reaction rates are, in general, in the same order of magnitude with the engine-out soot emission rates. ...

Ioannis P. Kandylas; Onoufrios A. Haralampous; Grigorios C. Koltsakis

2002-09-20T23:59:59.000Z

134

Comparative efficiency and driving range of light- and heavy-duty vehicles powered with biomass energy stored in liquid fuels or batteries  

Science Journals Connector (OSTI)

...L (6.8 mi/gal diesel...criteria pollutants is in general not a substantial...Medium- and Heavy-Duty Engines and Vehicles, A Proposed...and-heavy-duty-engines#p-401. Accessed June...the internal combustion engine...

Mark Laser; Lee R. Lynd

2014-01-01T23:59:59.000Z

135

Emissions from In-Use NG, Propane, and Diesel Fueled Heavy Duty...  

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

and CO, compared to diesel vehicles, while meeting certification requirements deer11johnson.pdf More Documents & Publications Vehicle Emissions Review - 2012 Emissions Control...

136

Materials - Catalysts for Diesel Engines  

NLE Websites -- All DOE Office Websites (Extended Search)

Argonne's deNOx Catalyst Begins Extensive Diesel Engine Exhaust Testing Argonne's deNOx Catalyst Begins Extensive Diesel Engine Exhaust Testing denox monolith Argonne's deNOx catalyst can be prepared as a powder or a monolith. chris marshall Principal investigator Chris Marshall shows the monolith form of the Argonne deNOx catalyst with a sensor inserted for testing. doug longman Mechanical engineer Doug Longman inserts the instrumented deNOx catalyst monolith into the aftertreatment chamber of Argonne's heavy-duty Caterpillar diesel test engine. Background Diesel engines, while efficient, produce many undesirable combustion byproducts in their exhaust. While we tend to think of the sooty exhaust products we see as the bad stuff, it is the less-visible exhaust products such as nitrogen oxides (NOx) that create bigger problems.

137

Heavy Duty Diesel Particulate Matter and Fuel Consumption Modeling for Transportation Analysis  

E-Print Network (OSTI)

of steady state engine fuel consumption and emission maps.affecting engine load and consequently fuel consumption. Theand engine speed which it then relates to fuel consumption

Scora, George Alexander

2011-01-01T23:59:59.000Z

138

Heavy-Duty Engine Combustion Optimization for High Thermal Efficiency Targeting EPA 2010 Emissions  

Energy.gov (U.S. Department of Energy (DOE))

Presentation given at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

139

Heavy-duty H2-Diesel Dual Fuel Engines  

Energy.gov (U.S. Department of Energy (DOE))

Brake thermal efficiency can be improved with the addition of a large amount of hydrogen at medium to high loads

140

Development of SCR on Diesel Particulate Filter System for Heavy Duty Applications  

Energy.gov (U.S. Department of Energy (DOE))

Evaluation of a system consisting of SCRDPF in comparison to a commercial 2010 CDPF system on an engine under high and low engine-out NOx conditions

Note: This page contains sample records for the topic "heavy-duty diesel engines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

A Predictive Tool for Emissions from Heavy-Duty Diesel Vehicles  

Science Journals Connector (OSTI)

This study was motivated by the need to augment a traffic simulation model, TRANSIMS (Los Alamos National Laboratories), with emissions predic tion capability, but the approach has wide and general application. ... Vehicle emissions were characterized using a variety of driving cycles, including the CBD Cycle, 5-Peak Cycle, 5-Mile Route, NY Bus Cycle, and the CSHVR (1, 2). ... Although off-cycle emissions will be curtailed in the future, they are present in many diesel vehicles manufactured over a decade of model years. ...

Nigel N. Clark; Prakash Gajendran; Justin M. Kern

2002-11-27T23:59:59.000Z

142

Measurement of Real-World Emissions from Heavy-Duty Diesel Vehicles...  

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

2003 DEER Conference Presentation: West Virginia University - Dept. of Mechanical and Aerospace Engineering 2003deergautam.pdf More Documents & Publications...

143

A High Temperature Direct Vehicle Exhaust Flowmeter for Heavy Duty Diesel Emission Measurements.  

Energy.gov (U.S. Department of Energy (DOE))

Poster presented at the 16th Directions in Engine-Efficiency and Emissions Research (DEER) Conference in Detroit, MI, September 27-30, 2010.

144

10 - Improving the environmental performance of heavy-duty vehicles and engines: key issues and system design approaches  

Science Journals Connector (OSTI)

Abstract: This chapter reviews various advanced technologies to improve the efficiency and environmental performance of heavy-duty engines, including design and operating characteristics of key subsystems such as fuel injection, conventional and advanced low-temperature combustion, turbocharging, exhaust gas recirculation (EGR), variable valve actuation (VVA), cooling, aftertreatment, waste heat recovery (WHR), and electronic controls. Engine downsizing, down-speeding, down-breathing, turbocompounding, and air system capability performance are summarized by engine system theoretical analysis and numerical simulation for fuel consumption improvement.

Q. Xin; C.F. Pinzon

2014-01-01T23:59:59.000Z

145

Development of Urea Dosing System for 10 Liter Heavy Duty Diesel...  

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

Directions in Engine-Efficiency and Emissions Research (DEER) Conference in Detroit, MI, September 27-30, 2010. p-09lee.pdf More Documents & Publications Evaluation of SCR and...

146

Emissions from In-Use NG, Propane, and Diesel Fueled Heavy Duty...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Engine-Efficiency and Emissions Research (DEER) October 3-6, 2011 Presented By: Kent Johnson Co-Authors: Thomas Durbin, J. Wayne Miller University of California, Riverside Bourns...

147

Measuring "Real World" Heavy-Duty Diesel Emissions with a Mobile...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Bourns College of Engineering Center for Environmental Research and Technology CARB's Combined Cycle for HHDDT 0 10 20 30 40 50 60 70 0 500 1000 1500 2000 2500 3000 3500 Time...

148

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine Search  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Compatible Vehicles: Compatible Vehicles: Cargotec - Ottawa 4x2 Elgin Sweeper Company - Broom Bear/Crosswind/Eagle/Pelican North American Bus Industries - 60BRT North American Bus Industries - 31LFW / 35LFW / 40LFW ElDorado National - E-Z Rider II BRT ElDorado National - Axess ElDorado National - XHF Champion Bus Inc. - CTS - Front Engine Motor Coach Industries - D4500 CT Hybrid Commuter Coach Gillig Corp. - Diesel-Electric Hybrid Bus and CNG Bus Freightliner - Business Class M2 112 Blue Bird Corp. - All American Rear Engine Capacity Trucks - TJ9000 Heil Environmental - RapidRail McNeilus - Rear Load (Std, HD, XC, Tag, MS, Metro-Pak) McNeilus - CNG Cement Mixer North American Bus Industries - 42BRT Heil Environmental - DuraPack Python Heil Environmental - Rear Loader Thomas Built Buses - Saf-T-Liner HDX CNG

149

Very High Fuel Economy, Heavy Duty, Constant Speed, Truck Engine Optimized Via Unique Energy Recovery Turbines and Facilitated High Efficiency Continuously Variable Drivetrain  

SciTech Connect

The project began under a corporative agreement between Mack Trucks, Inc and the Department of Energy starting from September 1, 2005. The major objective of the four year project is to demonstrate a 10% efficiency gain by operating a Volvo 13 Litre heavy-duty diesel engine at a constant or narrow speed and coupled to a continuously variable transmission. The simulation work on the Constant Speed Engine started on October 1st. The initial simulations are aimed to give a basic engine model for the VTEC vehicle simulations. Compressor and turbine maps are based upon existing maps and/or qualified, realistic estimations. The reference engine is a MD 13 US07 475 Hp. Phase I was completed in May 2006 which determined that an increase in fuel efficiency for the engine of 10.5% over the OICA cycle, and 8.2% over a road cycle was possible. The net increase in fuel efficiency would be 5% when coupled to a CVT and operated over simulated highway conditions. In Phase II an economic analysis was performed on the engine with turbocompound (TC) and a Continuously Variable Transmission (CVT). The system was analyzed to determine the payback time needed for the added cost of the TC and CVT system. The analysis was performed by considering two different production scenarios of 10,000 and 60,000 units annually. The cost estimate includes the turbocharger, the turbocompound unit, the interstage duct diffuser and installation details, the modifications necessary on the engine and the CVT. Even with the cheapest fuel and the lowest improvement, the pay back time is only slightly more than 12 months. A gear train is necessary between the engine crankshaft and turbocompound unit. This is considered to be relatively straight forward with no design problems.

Bahman Habibzadeh

2010-01-31T23:59:59.000Z

150

Elucidating secondary organic aerosol from diesel and gasoline vehicles through detailed characterization of organic carbon emissions  

Science Journals Connector (OSTI)

...the SOA potential of diesel emissions, especially...improve heavy-duty diesel engine performance with postcombustion...attention to gasoline and diesel fuel composition and emissions...carbon. Although total consumption of oil is minor relative...

Drew R. Gentner; Gabriel Isaacman; David R. Worton; Arthur W. H. Chan; Timothy R. Dallmann; Laura Davis; Shang Liu; Douglas A. Day; Lynn M. Russell; Kevin R. Wilson; Robin Weber; Abhinav Guha; Robert A. Harley; Allen H. Goldstein

2012-01-01T23:59:59.000Z

151

Design and Commissioning of a Wind Tunnel for Integrated Physical and Chemical Measurements of PM Dispersing Plume of Heavy Duty Diesel Truck  

Energy.gov (U.S. Department of Energy (DOE))

Presents plume characterization of three vehicles with different aftertreatment configuration, representative of legacy, current and future heavy-duty truck fleets

152

Exhaust emissions from heavy-duty vehicles  

Science Journals Connector (OSTI)

Exhaust emission tests were conducted on 20 heavy-duty vehicles. These test vehicles were Euro 1 and Euro 2 compliant and included coaches, and trucks ranging from 7.5 to 38 tonne vehicles. The vehicles were tested over the European 13-mode and the FIGE engine dynamometer tests, with some of the vehicles repeat tested using an ultra low sulphur diesel fuel (ULSD). A single test vehicle was tested over a selection of real world driving cycles. In general, Euro 2 vehicles demonstrated lower emissions than Euro 1 vehicles. The ULSD produced large decreases in the emissions of CO and PM with a smaller decrease in NOx. Although Euro 2 vehicles produced less mass of particulate, the number of particles emitted significantly increased when compared to Euro 1. The FIGE and the Truck cycles produced the lowest and similar emission rates, while the bus cycle produced much higher levels, reflecting the importance of vehicle operation on emissions.

Tim Barlow; Ian McCrae

2001-01-01T23:59:59.000Z

153

New Method for Time-Resolved Diesel Engine Exhaust Particle Mass Measurement  

Science Journals Connector (OSTI)

The calculated time response data cannot be taken as general characteristic values of the instruments, as they are influenced by the behavior of the engine. ... Characterization of the mobile sensor system under real-world conditions was performed during several measurement campaigns at an engine test bench for heavy-duty diesel engines. ...

U. Lehmann; V. Niemelä; M. Mohr

2004-09-29T23:59:59.000Z

154

PM PEM’s On-Road Investigation – With and Without DPF Equipped Engines  

E-Print Network (OSTI)

Under the Heavy-Duty Diesel Engine In-Use Testing Program,Emissions from Diesel Engines. 1. Regulated GaseousEmissions from Diesel Engines. 2. Sampling and Toxics and

Durbin, T; Jung, H; Cocker III, D R; Johnson, K

2009-01-01T23:59:59.000Z

155

Fuel Effects on Advanced Combustion Engines | Department of Energy  

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

More Documents & Publications Fuel Effects on Advanced Combustion: Heavy-Duty Optical-Engine Research Greenpower Trap Mufflerl System Low-Temperature Diesel Combustion...

156

2006 Diesel Engine-Efficiency and Emissions Research (DEER) Conference...  

Energy Savers (EERE)

with a Combined SCR and DPF Technology for Heavy-Duty Diesel Retrofit Ray Conway Johnson Matthey Environmental Catalysts & Technologies (PDF 287 KB) A Soot Formation Model...

157

Study of deposit formation inside diesel injectors nozzles  

E-Print Network (OSTI)

Diesel engines are widely used in heavy duty transportation applications such as in trucks, buses and ships because of their reliability and high torque output. A key diesel technology is the injection system which is ...

Wang, YinChun, Ph. D. Massachusetts Institute of Technology

2012-01-01T23:59:59.000Z

158

Particle Number & Particulate Mass Emissions Measurements on a 'Euro VI' Heavy-duty Engine using the PMP Methodologies  

Energy.gov (U.S. Department of Energy (DOE))

Poster presentation at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

159

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine Search  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Allison Transmission (2) Azure Dynamics (1) BAE Systems (1) DesignLine Allison Transmission (2) Azure Dynamics (1) BAE Systems (1) DesignLine Corp. (1) Eaton (3) Hino (1) Parker Hannifin Corp. (1) Proterra (1) Smith Electric Vehicles (1) Fuel Type All Hybrid - Diesel Electric (8) Hybrid - Gasoline Electric (1) Application All Bus - School (4) Bus - Shuttle (2) Bus - Transit (6) Refuse hauler (2) Tractor (2) Trolley (2) Vocational truck (2) Go Compare Allison Transmission - Allison H 40 EP Allison Transmission - Allison H 50 EP Azure Dynamics - Balance Parallel Hybrid Drive BAE Systems - HybriDrive DesignLine Corp. - ECOSaver IV Eaton - Diesel Electric Hybrid Eaton - Hybrid Drive System Eaton - Hybrid Hydraulic Launch Assist (HLA) Hino - Hino Hybrid Drive Parker Hannifin Corp. - RunWise Proterra - ProDrive System Smith Electric Vehicles - 120 kw induction motor with Lithium-ion batteries

160

Large Diesel Engine Lubrication  

Science Journals Connector (OSTI)

Centralized lubrication for slow-speed internal combustion engines ; Marine diesel engine lubrication ...

Hans Gaca; Jan Ruiter; Götz Mehr; Theo Mang

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "heavy-duty diesel engines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Demonstration of a Low-NOx Heavy-Duty Natural Gas Engine  

SciTech Connect

Results of a Next Generation Natural Gas Vehicle engine research project: A Caterpillar C-12 natural gas engine with Clean Air Power Dual-Fuel technology and exhaust gas recirculation demonstrated low NOx and PM emissions.

Not Available

2004-02-01T23:59:59.000Z

162

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine Search  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Ballard Power Systems (3) Balqon (3) Bosch Rexroth (1) Boulder Electric Ballard Power Systems (3) Balqon (3) Bosch Rexroth (1) Boulder Electric Vehicle (1) Capstone Turbine Corp. (2) Cummins (2) Cummins Westport (2) Electric Vehicles International (1) Enova Systems (1) Ford Motor Co. (5) General Motors (5) Hino (1) KEM (1) Navistar (1) Paccar (2) Smith Electric Vehicles (2) UQM (2) UTC Power (1) Valence (1) Vision Motor Corp. (2) Volvo (1) Westport Innovations (1) Fuel Type All CNG (8) Electricity (11) Ethanol (2) Hybrid - Diesel Hydraulic (5) Hydrogen (3) LNG (4) Propane (10) Application All Bus - School (6) Bus - Shuttle (9) Bus - Transit (11) Refuse hauler (2) Street sweeper (5) Tractor (13) Trolley (3) Van (9) Vocational truck (16) Go Compare Ballard Power Systems - FCvelocity-HD6 fuel cell Ballard Power Systems - Hydrogen Fuel Cell

163

Advanced Diesel Engine Component Development Program, final report - tasks 4-14  

SciTech Connect

The Advanced Diesel Engine Component Development (ADECD) Program is a multi-year, multi-phase effort to develop and demonstrate the critical technology needed to advance the heavy-duty low heat rejection (LHR) engine concept for the long-haul, heavy-duty truck market. The ADECD Program has been partitioned into two phases. The first phase, Phase 1, was completed in 1986, resulting in definition of the Advanced Diesel Reference Engine (ADRE)III. The second phase, Phase 11/111, examines the feasibility of the ADRE concepts for application to the on-highway diesel engine. Phase 11/111 is currently underway. This project is sponsored by the U.S. Department of Energy, Office of Transportation Technologies. The work has been performed by the Detroit Diesel Corporation (DDC) under Contract DEN3-329 with the NASA Lewis Research Center, who provide project management and technical direction.

Kaushal, T.S.; Weber, K.E.

1994-11-01T23:59:59.000Z

164

Heavy Duty Vehicle Futures Analysis.  

SciTech Connect

This report describes work performed for an Early Career Research and Development project. This project developed a heavy-duty vehicle (HDV) sector model to assess the factors influencing alternative fuel and efficiency technology adoption. This model builds on a Sandia light duty vehicle sector model and provides a platform for assessing potential impacts of technological advancements developed at the Combustion Research Facility. Alternative fuel and technology adoption modeling is typically developed around a small set of scenarios. This HDV sector model segments the HDV sector and parameterizes input values, such as fuel prices, efficiencies, and vehicle costs. This parameterization enables sensitivity and trade space analyses to identify the inputs that are most associated with outputs of interest, such as diesel consumption and greenhouse gas emissions. Thus this analysis tool enables identification of the most significant HDV sector drivers that can be used to support energy security and climate change goals.

Askin, Amanda Christine; Barter, Garrett; West, Todd H.; Manley, Dawn Kataoka

2014-05-01T23:59:59.000Z

165

Emissions and fuel consumption characteristics of an HCNG-fueled heavy-duty engine at idle  

Science Journals Connector (OSTI)

Abstract The idle performance of an 11-L, 6-cylinder engine equipped with a turbocharger and an intercooler was investigated for both compressed natural gas (CNG) and hydrogen-blended CNG (HCNG) fuels. HCNG, composed of 70% CNG and 30% hydrogen in volume, was used not only because it ensured a sufficient travel distance for each fueling, but also because it was the optimal blending rate to satisfy EURO-6 emission regulation according to the authors' previous studies. The engine test results demonstrate that the use of HCNG enhanced idle combustion stability and extended the lean operational limit from excess air ratio (?) = 1.5 (CNG) to 1.6. A decrease of more than 25% in the fuel consumption rate was achieved in HCNG idle operations compared to CNG. Total hydrocarbon and carbon monoxide emissions decreased when fueled with HCNG at idle because of the low carbon content and enhanced combustion characteristics. In particular, despite hydrogen enrichment, less nitrogen oxides (NOx) were emitted with HCNG operations because the amount of fuel supplied for a stable idle was lower than with CNG operations, which eventually induced lower peak in-cylinder combustion temperature. This low HCNG fuel quantity in idle condition also induced a continuous decrease in \\{NOx\\} emissions with an increase in ?. The idle engine test results also indicate that cold-start performance can deteriorate owing to low exhaust gas temperature, when fueled with HCNG. Therefore, potential solutions were discussed, including combustion strategies such as retardation of spark ignition timing combined with leaner air/fuel ratios.

Sunyoup Lee; Changgi Kim; Young Choi; Gihun Lim; Cheolwoong Park

2014-01-01T23:59:59.000Z

166

Characterization of Dual-Fuel Reactivity Controlled Compression Ignition (RCCI) Using Hydrated Ethanol and Diesel Fuel  

Energy.gov (U.S. Department of Energy (DOE))

This study uses numerical simulations to explore the use of wet ethanol as the low-reactivity fuel and diesel as the high-reactivity fuel for RCCI operation in a heavy-duty diesel engine.

167

Influence of Diesel Engine Combustion Parameters on Primary Soot Particle Diameter  

Science Journals Connector (OSTI)

In addition to minimized engine-out emissions, exhaust gas after-treatment systems such as diesel particle filter and chemical reduction of NOx will be necessary to meet the U.S. Federal (EPA) 2007 emission standards for heavy-duty diesel engines. ... While for the diesel fuel a reduction of the number of particles in the accumulation mode went in line with a shift of the mode diameter toward smaller values (see Figures 2 and 3), this was not a general observation for the water?diesel emulsion fuel. ... JSME International Journal, Series B: Fluids and Thermal Engineering (2001), 44 (1), 166-170 CODEN: JIJEEE; ISSN:1340-8054. ...

Urs Mathis; Martin Mohr; Ralf Kaegi; Andrea Bertola; Konstantinos Boulouchos

2005-02-04T23:59:59.000Z

168

Development of SCR on Diesel Particulate Filter System for Heavy...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

SCR on Diesel Particulate Filter System for Heavy Duty Applications Development of SCR on Diesel Particulate Filter System for Heavy Duty Applications Evaluation of a system...

169

Coal-fueled high-speed diesel engine development: Task 2, Market assessment and economic analysis  

SciTech Connect

Based on the preliminary coal engine design developed, this task was conducted to identify the best opportunity(s) to enter the market with the future coal-fueled, high-speed diesel engine. The results of this market and economic feasibility assessment will be used to determine what specific heavy duty engine application(s) are most attractive for coal fuel, and also define basic economic targets for the engine to be competitive.

Not Available

1991-12-01T23:59:59.000Z

170

Heavy-Duty Waste Hauler with Chemically Correct Natural Gas Engine Diluted with EGR and Using a Three-Way Catalyst: Final Report, 24 February 2004 -- 23 February 2006  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Heavy-Duty Waste Hauler with Heavy-Duty Waste Hauler with Chemically Correct Natural Gas Engine Diluted with EGR and Using a Three-Way Catalyst Final Report February 24, 2004 - February 23, 2006 T. Reppert Mack Trucks, Inc. Allentown, Pennsylvania J. Chiu Southwest Research Institute San Antonio, Texas Subcontract Report NREL/SR-540-38222 September 2005 Heavy-Duty Waste Hauler with Chemically Correct Natural Gas Engine Diluted with EGR and Using a Three-Way Catalyst Final Report February 24, 2004 - February 23, 2006 T. Reppert Mack Trucks, Inc. Allentown, Pennsylvania J. Chiu Southwest Research Institute San Antonio, Texas NREL Technical Monitor: R. Parish Prepared under Subcontract No. ZCI-4-32049-01 Subcontract Report NREL/SR-540-38222 September 2005 National Renewable Energy Laboratory

171

Using LNG as a Fuel in Heavy-Duty Tractors  

SciTech Connect

Recognizing the lack of operational data on alternative fuel heavy-truck trucks, NREL contracted with the Trucking Research Institute (TRI) in 1994 to obtain a cooperative agreement with Liquid Carbonic. The purpose of this agreement was to (1) purchase and operate liquid natural gas- (LNG-) powered heavy-duty tractor-trailers with prototype Detroit Diesel Corporation (DDC) Series 60 natural gas (S60G) engines in over-the-road commercial service applications; and (2) collect and provide operational data to DDC to facilitate the on-road prototype development of the engine and to NREL for the Alternative Fuels Data Center. The vehicles operated from August 1994 through April of 1997 and led to a commercially available, emissions-certified S60G in 1998. This report briefly documents the engine development, the operational characteristics of LNG, and the lessons learned during the project.

Liquid Carbonic, Inc. and Trucking Research Institute

1999-08-09T23:59:59.000Z

172

Clean and Efficient Diesel Engines - Designing for the Customer...  

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

System Meeting Emissions Useful Life Requirements Cummins Indy Racing Integrated Engine and Aftertreatment Technology Roadmap for EPA 2010 Heavy-duty Emissions Regulations...

173

Future Diesel Engine Thermal Efficiency Improvement andn Emissions...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

2005deerpuetz.pdf More Documents & Publications Integrated Engine and Aftertreatment Technology Roadmap for EPA 2010 Heavy-duty Emissions Regulations Model-Based Transient...

174

Development of a direct-injected natural gas engine system for heavy-duty vehicles: Final report phase 2  

SciTech Connect

This report summarizes the results of Phase 2 of this contract. The authors completed four tasks under this phase of the subcontract. (1) They developed a computational fluid dynamics (CFD) model of a 3500 direct injected natural gas (DING) engine gas injection/combustion system and used it to identify DING ignition/combustion system improvements. The results were a 20% improvement in efficiency compared to Phase 1 testing. (2) The authors designed and procured the components for a 3126 DING engine (300 hp) and finished assembling it. During preliminary testing, the engine ran successfully at low loads for approximately 2 hours before injector tip and check failures terminated the test. The problems are solvable; however, this phase of the program was terminated. (3) They developed a Decision & Risk Analysis model to compare DING engine technology with various other engine technologies in a number of commercial applications. The model shows the most likely commercial applications for DING technology and can also be used to identify the sensitivity of variables that impact commercial viability. (4) MVE, Inc., completed a preliminary design concept study that examines the major design issues involved in making a reliable and durable 3,000 psi LNG pump. A primary concern is the life of pump seals and piston rings. Plans for the next phase of this program (Phase 3) have been put on indefinite hold. Caterpillar has decided not to fund further DING work at this time due to limited current market potential for the DING engine. However, based on results from this program, the authors believe that DI natural gas technology is viable for allowing a natural gas-fueled engine to achieve diesel power density and thermal efficiency for both the near and long terms.

Cox, G.B.; DelVecchio, K.A.; Hays, W.J.; Hiltner, J.D.; Nagaraj, R.; Emmer, C.

2000-03-02T23:59:59.000Z

175

Marine Diesel Engines  

Science Journals Connector (OSTI)

Marine diesel engines need reserve power to compensate for ... and decreased efficiency of the engine caused by wear and contamination. Minimum efficiency reserves must be...

Michael Palocz-Andresen

2013-01-01T23:59:59.000Z

176

Diesel engine reference book  

SciTech Connect

This book is a reference on the design, operation, and maintenance of all types of diesel engines, ranging from the smallest automotive and ancillary engines to the largest marine diesels. Nearly 900 line drawings, graphs and photos illustrate the book. Major Sections: Theory; Engine Design Practice; Lubrication; Environmental Pollution; Crankcase Explosions; Engine Types; Engine Testing; Maintenance; Index.

Lilly, I.R.C.

1984-01-01T23:59:59.000Z

177

Comparative Analysis on the Effects of Diesel Particulate Filter and  

E-Print Network (OSTI)

samples representative of real-world emissions. Testing was conducted on a heavy-duty diesel engine and secondary emissions significantly. Introduction Advances in diesel engine and aftertreatment technologies) (1). Of these emissions, the most difficult to control in diesel engine applications are those of PM

Wu, Mingshen

178

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

SciTech Connect

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

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

2013-01-01T23:59:59.000Z

179

Reducing Diesel Engine Emissions  

NLE Websites -- All DOE Office Websites (Extended Search)

Reducing Reducing Diesel Engine Emissions 2 0 1 0 Green TransporTaTion TechnoloGies Compared to traditional gasoline engines, diesel engines require less maintenance, generate energy more efficiently, and produce less carbon dioxide emissions. But when uncontrolled, diesel engines churn out harmful emissions like particu- late matter (PM) and nitrogen oxides (NO x ). Researchers at Argonne National Laboratory are currently working to develop

180

Feature - Fuel Economy for Medium- and Heavy-Duty Vehicles  

NLE Websites -- All DOE Office Websites (Extended Search)

New Report Looks at Fuel Economy for Medium- and Heavy-Duty Vehicles New Report Looks at Fuel Economy for Medium- and Heavy-Duty Vehicles heavy duty trucks Argonne researcher Aymeric Rousseau was part of a National Academy of Science (NAS) committee established to make recommendations on improving and regulating fuel consumption for medium- and heavy-duty vehicles. On March 31, the committee issued a report that evaluates various technologies and methods that could improve the fuel economy of these vehicles. As a system analysis engineer at Argonne's Center for Transportation Research, Rousseau contributed his expertise on vehicle modeling and simulation to the committee, which was comprised of 19 members from industry, research organizations and academia. Rousseau, who leads the development of Argonne's PSAT and Autonomie software tools, helped the committee determine how modeling and simulation tools can be used to:

Note: This page contains sample records for the topic "heavy-duty diesel engines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Heavy-Duty Powertrain and Vehicle Development- A Look Toward 2020  

Energy.gov (U.S. Department of Energy (DOE))

Globalization in emissions regulation will be driving freight efficiency improvements and will require heavy-duty engine and powertrain advancements, vehicle improvements, and optimized system integration

182

SCR Potential and Issues for Heavy-Duty Applications in the United...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Status, Futur Potential, and Application Issues Integrated Engine and Aftertreatment Technology Roadmap for EPA 2010 Heavy-duty Emissions Regulations Eaton Aftertreatment...

183

Design Optimization of Piezoceramic Multilayer Actuators for Heavy Duty Diesel Engine Fuel Injectors  

Energy.gov (U.S. Department of Energy (DOE))

2009 DOE Hydrogen Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting, May 18-22, 2009 -- Washington D.C.

184

Design Optimization of Piezoceramic Multilayer Actuators for Heavy Duty Diesel Engine Fuel Injectors  

Energy.gov (U.S. Department of Energy (DOE))

2010 DOE Vehicle Technologies and Hydrogen Programs Annual Merit Review and Peer Evaluation Meeting, June 7-11, 2010 -- Washington D.C.

185

Cummins/ORNL-FEERC CRADA: NOx Control & Measurement Technology for Heavy-Duty Diesel Engines  

Energy.gov (U.S. Department of Energy (DOE))

2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation

186

Cummins/ORNL-FEERC CRADA: NOx Control & Measurement Technology for Heavy-Duty Diesel Engines  

Energy.gov (U.S. Department of Energy (DOE))

2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

187

Cummins/ORNL-FEERC CRADA: NOx Control & Measurement Technology for Heavy-Duty Diesel Engines  

Energy.gov (U.S. Department of Energy (DOE))

2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

188

Cummins/ORNL-FEERC CRADA: NOx Control & Measurement Technology for Heavy-Duty Diesel Engines  

Energy.gov (U.S. Department of Energy (DOE))

2010 DOE Vehicle Technologies and Hydrogen Programs Annual Merit Review and Peer Evaluation Meeting, June 7-11, 2010 -- Washington D.C.

189

Design Optimization of Piezoceramic Multilayer Actuators for Heavy Duty Diesel Engine Fuel Injectors  

Energy.gov (U.S. Department of Energy (DOE))

2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation

190

Cummins/ORNL-FEERC CRADA: NOx Control & Measurement Technology for Heavy-Duty Diesel Engines  

Energy.gov (U.S. Department of Energy (DOE))

Presentation from the U.S. DOE Office of Vehicle Technologies "Mega" Merit Review 2008 on February 25, 2008 in Bethesda, Maryland.

191

Cummins/ORNL-FEERC CRADA: NOx Control & Measurement Technology for Heavy-Duty Diesel Engines  

Energy.gov (U.S. Department of Energy (DOE))

2009 DOE Hydrogen Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting, May 18-22, 2009 -- Washington D.C.

192

Design Optimization of Piezoceramic Multilayer Actuators for Heavy Duty Diesel Engine Fuel Injectors  

Energy.gov (U.S. Department of Energy (DOE))

2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

193

Variable Charge Motion for 2007-2010 Heavy Duty Diesel Engines  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

- - gkWh gkWh 0.4 0.4 0.3 0.3 0.2 0.2 0 0 0.1 0.1 NOx NOx - - gkWh gkWh Europe Japan USA 203005-03 ID-NR.12345-3 Technologies required Technologies required * Advanced...

194

Lowest Engine-Out Emissions as the Key to the Future of the Heavy...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Lowest Engine-Out Emissions as the Key to the Future of the Heavy-Duty Diesel Engine: New Development Rersults Lowest Engine-Out Emissions as the Key to the Future of the...

195

Influence of Biodiesel Addition to Fischer?Tropsch Fuel on Diesel Engine Performance and Exhaust Emissions  

Science Journals Connector (OSTI)

Zhu, R.; Wang, X.; Miao, H.; Huang, Z.; Gao, J.; Jiang, D.Performance and Emission Characteristics of Diesel Engines Fueled with Diesel-Dimethoxymethane (DMM) Blends Energy Fuels 2009, 23, 286– 293 ... Results showed that, without changing the fuel supply system and the combustion system of a diesel engine, when using blended fuel with increased DMM percentage, break-specific fuel consumption (BSFC) is higher for a smaller lower heating value of DMM, while thermal efficiency increases a little. ... To investigate influences of fuel design on regulated and non-regulated emissions of heavy-duty diesel engines, a Mercedes-Benz OM 906 Euro 3 engine was run with common diesel fuel (DF), first- and second-generation alternative fuels (Gas-to-liq. ...

Md. Nurun Nabi; Johan Einar Hustad

2010-04-14T23:59:59.000Z

196

Durability of ACERT Engine Components  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

heavy duty diesel engine thermal efficiency of 55% by 2018 ACE: Improve commercial vehicle fuel economy at least 20% 3 Managed by UT-Battelle for the Department of Energy...

197

Comparative Study on Engine Performance and Diesel Emissions with European Diesel Fuel (DF)?Diethylene Glycol Dimethyl Ether (DGM) and Fischer?Tropsch (FT)?DGM Blends  

Science Journals Connector (OSTI)

† Department of Energy and Process Engineering ... The general picture of the methyl- and methylene-related vibrations in the DF used here confirms the results of the GC analyses; i.e., that the DF resembles a n-alkane-dominated hydrocarbon mixture. ... To investigate influences of fuel design on regulated and non-regulated emissions of heavy-duty diesel engines, a Mercedes-Benz OM 906 Euro 3 engine was run with common diesel fuel (DF), first- and second-generation alternative fuels (Gas-to-liq. ...

Md. Nurun Nabi; Rudolf Schmid; Johan Einar Hustad

2010-03-30T23:59:59.000Z

198

Investigation of Ultrafine Particle Formation during Diesel Exhaust Dilution  

Science Journals Connector (OSTI)

Investigation of Ultrafine Particle Formation during Diesel Exhaust Dilution ... In on-road exhaust studies with a heavy duty diesel vehicle and in laboratory studies with two gasoline-fueled passenger cars, we found that ... ... Analyses of Turbulent Flow Fields and Aerosol Dynamics of Diesel Engine Exhaust Inside Two Dilution Sampling Tunnels Using the CTAG Model ...

Ji Ping Shi; Roy M. Harrison

1999-09-16T23:59:59.000Z

199

Demonstration of Air-Power-Assist Engine Technology for Clean Combustion and Direct Energy Recovery in Heavy Duty Application  

SciTech Connect

The first phase of the project consists of four months of applied research, starting from September 1, 2005 and was completed by December 31, 2005. During this time, the project team heavily relied on highly detailed numerical modeling techniques to evaluate the feasibility of the APA technology. Specifically, (i) A GT-Power{sup TM}engine simulation model was constructed to predict engine efficiency at various operating conditions. Efficiency was defined based on the second-law thermodynamic availability. (ii) The engine efficiency map generated by the engine simulation was then fed into a simplified vehicle model, which was constructed in the Matlab/Simulink environment, to predict fuel consumption of a refuse truck on a simple collection cycle. (iii) Design and analysis work supporting the concept of retrofitting an existing Sturman Industries Hydraulic Valve Actuation (HVA) system with the modifications that are required to run the HVA system with Air Power Assist functionality. A Matlab/Simulink model was used to calculate the dynamic response of the HVA system. Computer aided design (CAD) was done in Solidworks for mechanical design and hydraulic layout. At the end of Phase I, 11% fuel economy improvement was predicted. During Phase II, the engine simulation group completed the engine mapping work. The air handling group made substantial progress in identifying suppliers and conducting 3D modelling design. Sturman Industries completed design modification of the HVA system, which was reviewed and accepted by Volvo Powertrain. In Phase II, the possibility of 15% fuel economy improvement was shown with new EGR cooler design by reducing EGR cooler outlet temperature with APA engine technology from Air Handling Group. In addition, Vehicle Simulation with APA technology estimated 4 -21% fuel economy improvement over a wide range of driving cycles. During Phase III, the engine experimental setup was initiated at VPTNA, Hagerstown, MD. Air Handling system and HVA system were delivered to VPTNA and then assembly of APA engine was completed by June 2007. Functional testing of APA engine was performed and AC and AM modes testing were completed by October 2007. After completing testing, data analysis and post processing were performed. Especially, the models were instrumental in identifying some of the key issues with the experimental HVA system. Based upon the available engine test results during AC and AM modes, the projected fuel economy improvement over the NY composite cycle is 14.7%. This is close to but slightly lower than the originally estimated 18% from ADVISOR simulation. The APA project group demonstrated the concept of APA technology by using simulation and experimental testing. However, there are still exists of technical challenges to meet the original expectation of APA technology. The enabling technology of this concept, i.e. a fully flexible valve actuation system that can handle high back pressure from the exhaust manifold is identified as one of the major technical challenges for realizing the APA concept.

Hyungsuk Kang; Chun Tai

2010-05-01T23:59:59.000Z

200

REQUEST BY CUMMINS ENGINE COMPANY, INC., FOR AN ADVANCE WAIVER  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

plan, develop and demonstrate advanced heavy duty diesel engine technologies to improve thermal efficiency and meet EPA proposed 2007 emissions of 0.2 NOx and 0.01 gm PM. This...

Note: This page contains sample records for the topic "heavy-duty diesel engines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

The California Demonstration Program for Control of PM from Diesel...  

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

of PM from Diesel Backup Generators Measuring "Real World" Heavy-Duty Diesel Emissions with a Mobile Lab Emissions from In-Use NG, Propane, and Diesel Fueled Heavy Duty Vehicles...

202

Diesel Engine Alternatives  

SciTech Connect

There are basically three different modes of combustion possible for use in reciprocating engines. These include, diffusion burning, as occurs in current diesel engines, flame propagation combustion such as used in conventional SI engines, and homogeneous combustion such as is used in the SwRI HCCI engine. Diesel engines currently offer significant fuel consumption benefits relative to other powerplants for on and off road applications; however, costs and efficiency may become problems as the emissions standards become even more stringent. This presentation presents a discussion of the potentials of HCCI and flame propagation engines as alternatives to the diesel engines. It is suggested that as the emissions standards become more and more stringent, the advantages of the diesel may disappear. The potential for HCCI is limited by the availability of the appropriate fuel. The potential of flame propagation engines is limited by several factors including knock, EGR tolerance, high BMEP operation, and throttling. These limitations are discussed in the context of potential for improvement of the efficiency of the flame propagation engine.

Ryan, T

2003-08-24T23:59:59.000Z

203

Demonstration of Automated Heavy-Duty Vehicles  

E-Print Network (OSTI)

general, the characteristics of the engine are highly nonlinear and complicated, no matter whether it is a CNG or a diesel engine [

2006-01-01T23:59:59.000Z

204

IMPACT OF OXYGENATED FUEL ON DIESEL ENGINE PERFORMANCE AND EMISSIONS  

SciTech Connect

As evidenced by recent lawsuits brought against operators of large diesel truck fleets [1] and by the Consent Decree brought against the heavy-duty diesel manufacturers [2], the environmental and health effects of diesel engine emissions continue to be a significant concern. Reduction of diesel engine emissions has traditionally been achieved through a combination of fuel system, combustion chamber, and engine control modifications [3]. Catalytic aftertreatment has become common on modern diesel vehicles, with the predominant device being the diesel oxidation catalytic converter [3]. To enable advanced after-treatment devices and to directly reduce emissions, significant recent interest has focused on reformulation of diesel fuel, particularly the reduction of sulfur content. The EPA has man-dated that diesel fuel will have only 15 ppm sulfur content by 2007, with current diesel specifications requiring around 300 ppm [4]. Reduction of sulfur will permit sulfur-sensitive aftertreatment devices, continuously regenerating particulate traps, NOx control catalysts, and plasma assisted catalysts to be implemented on diesel vehicles [4]. Another method of reformulating diesel fuel to reduce emissions is to incorporate oxygen in the fuel, as was done in the reformulation of gasoline. The use of methyl tertiary butyl ether (MTBE) in reformulated gasoline has resulted in contamination of water resources across the country [5]. Nonetheless, by relying on the lessons learned from MTBE, oxygenation of diesel fuel may be accomplished without compromising water quality. Oxygenation of diesel fuel offers the possibility of reducing particulate matter emissions significantly, even for the current fleet of diesel vehicles. The mechanism by which oxygen content leads to particulate matter reductions is still under debate, but recent evidence shows clearly that ''smokeless'' engine operation is possible when the oxygen content of diesel fuel reaches roughly 38% by weight [6]. The potential improvements in energy efficiency within the transportation section, particularly in sport utility vehicles and light-duty trucks, that can be provided by deployment of diesel engines in passenger cars and trucks is a strong incentive to develop cleaner burning diesel engines and cleaner burning fuels for diesel engines. Thus, serious consideration of oxygenated diesel fuels is of significant practical interest and value to society. In the present work, a diesel fuel reformulating agent, CETANERTM, has been examined in a popular light-medium duty turbodiesel engine over a range of blending ratios. This additive is a mixture of glycol ethers and can be produced from dimethyl ether, which itself can be manufactured from synthesis gas using Air Products' Liquid Phase Dimethyl Ether (LPDME TM) technology. CETANERTM is a liquid, has an oxygen content of 36 wt.%, has a cetane number over 100 and is highly miscible in diesel fuel. This combination of physical and chemical properties makes CETANERTM an attractive agent for oxygenating diesel fuel. The present study considered CETANERTM ratios from 0 to 40 wt.% in a California Air Resources Board (CARB) specification diesel fuel. Particulate matter emissions, gaseous emissions and in-cylinder pressure traces were monitored over the AVL 8-Mode engine test protocol [7]. This paper presents the results from these measurements and discusses the implications of using high cetane number oxygenates in diesel fuel reformulation.

Boehman, Andre L.

2000-08-20T23:59:59.000Z

205

Predicted Impact of Idling Reduction Options for Heavy-Duty Diesel Trucks: A Comparison of Full-Fuel-Cycle Emissions, Energy Use, and Proximity to Urban Populations in Five States  

Energy.gov (U.S. Department of Energy (DOE))

Poster presentation at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

206

Diesel Engine Idling Test  

SciTech Connect

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.

Larry Zirker; James Francfort; Jordon Fielding

2006-02-01T23:59:59.000Z

207

LNT + SCR Aftertreatment for Medium-Heavy Duty Applications:...  

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

+ SCR Aftertreatment for Medium-Heavy Duty Applications: A Systems Approach LNT + SCR Aftertreatment for Medium-Heavy Duty Applications: A Systems Approach Poster presentation at...

208

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

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

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

209

Hydrogen in the Heavy Duty Market? | Department of Energy  

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

in the Heavy Duty Market? Hydrogen in the Heavy Duty Market? 2002 DEER Conference Presentation: Sandia National Laboratories 2002deerkeller.pdf More Documents & Publications...

210

A Quantum Leap for Heavy-Duty Truck Engine Efficiency- Hybrid Power System of Diesel and WHR-ORC Engines  

Energy.gov (U.S. Department of Energy (DOE))

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

211

Alternative Fuels Data Center: Heavy-Duty Idle Reduction Requirement  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Heavy-Duty Idle Heavy-Duty Idle Reduction Requirement to someone by E-mail Share Alternative Fuels Data Center: Heavy-Duty Idle Reduction Requirement on Facebook Tweet about Alternative Fuels Data Center: Heavy-Duty Idle Reduction Requirement on Twitter Bookmark Alternative Fuels Data Center: Heavy-Duty Idle Reduction Requirement on Google Bookmark Alternative Fuels Data Center: Heavy-Duty Idle Reduction Requirement on Delicious Rank Alternative Fuels Data Center: Heavy-Duty Idle Reduction Requirement on Digg Find More places to share Alternative Fuels Data Center: Heavy-Duty Idle Reduction Requirement on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Heavy-Duty Idle Reduction Requirement Heavy-duty vehicles with a gross vehicle weight rating greater than 8,500

212

Integrated Rankine bottoming cycle for diesel truck engines  

SciTech Connect

This study assessed the feasibility of incorporating a Rankine bottoming cycle into a diesel truck engine. An organic Rankine bottoming cycle (ORBC) previously demonstrated by the US Department of Energy in a heavy-duty, long-haul truck reduced the truck's fuel consumption by about 12%. However, that system was considered too complex and costly to be commercialized. The integrated Rankine bottoming cycle (IRBC) described here is expected to be simpler and less costly than the ORBC. In the IRBC, one cylinder of a six-cylinder diesel truck engine will be used for power recovery, instead of the turbine and reduction gears of the ORBC; engine coolant will serve as the working fluid; and the engine radiator will also serve as the condenser. Toluene and steam were considered as working fluids in this assessment, and we concluded that steam (at 1000 psi, partially vaporized to about 33% saturation in the cylinder head, and superheated in an evaporator) would be the more practical of the two. Both heat exchangers are smaller than those of the ORBC system, but may pose a challenge in an under-the-hood installation. Overall, the concept appears feasible. 13 refs., 9 figs., 7 tabs.

Sekar, R.; Cole, R.L.

1987-09-01T23:59:59.000Z

213

Comparison of Neat Biodiesels and ULSD in an Optimized Single-Cylinder Diesel Engine with Electronically-Controlled Fuel Injection  

Science Journals Connector (OSTI)

An Experimental Investigation of the Origin of Increased NOx Emissions When Fueling a Heavy-Duty Compression-Ignition Engine with Soy Biodiesel SAE Int. ... The fuels were then burned in a single-cylinder direct-injection diesel engine and evaluated for both fuel consumption and exhaust emissions of nitrogen oxides, carbon monoxide (CO), unburned hydrocarbons, and particulate matter. ... Monyem, A.; Van Gerpen, J.; Canakcl, M.The effect of timing and oxidation on emissions from biodiesel–fueled engines Carbon 2001, 44 ( 1) 35– 42 ...

Michael Mangus; Farshid Kiani; Jonathan Mattson; Christopher Depcik; Edward Peltier; Susan Stagg-Williams

2014-05-12T23:59:59.000Z

214

Optimization of Advanced Diesel Engine Combustion Strategies...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Optimization of Advanced Diesel Engine Combustion Strategies Optimization of Advanced Diesel Engine Combustion Strategies 2010 DOE Vehicle Technologies and Hydrogen Programs Annual...

215

Coal-liquid fuel/diesel engine operating compatibility. Final report  

SciTech Connect

This work is intended to assess the possibilities of using coal-derived liquids (CDL) represented by a specific type (SRC II) and shale-derived distillate fuel in blends of petroleum-derived fuels in medium-speed, high-output, heavy-duty diesel engines. Conclusions are as follows: (1) Blends of solvent refined coal and diesel fuel may be handled safely by experienced diesel engine mechanics. (2) A serious corrosion problem was found in the fuel pump parts when operating with solvent refined coal blended with petroleum. It is expected that a metallurgy change can overcome this problem. (3) Proper selection of materials for the fuel system is required to permit handling coal-derived liquid fuels. (4) A medium speed, high horsepower, 4-cycle diesel engine can be operated on blends of solvent refined coal and petroleum without serious consequences save the fuel system corrosion previously mentioned. This is based on a single, short durability test. (5) As represented by the product evaluated, 100% shale-derived distillate fuel may be used in a medium speed, high horsepower, 4-cycle diesel engine without significant consequences. (6) The shale product evaluated may be blended with petroleum distillate or petroleum residual materials and used as a fuel for medium speed, high horsepower, 4-cycle diesel engines. 7 references, 24 figures, 20 tables.

Hoffman, J.G.; Martin, F.W.

1983-09-01T23:59:59.000Z

216

Alternative Fuels Data Center: Heavy-Duty Vehicle Emissions Reduction  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Heavy-Duty Vehicle Heavy-Duty Vehicle Emissions Reduction Grants to someone by E-mail Share Alternative Fuels Data Center: Heavy-Duty Vehicle Emissions Reduction Grants on Facebook Tweet about Alternative Fuels Data Center: Heavy-Duty Vehicle Emissions Reduction Grants on Twitter Bookmark Alternative Fuels Data Center: Heavy-Duty Vehicle Emissions Reduction Grants on Google Bookmark Alternative Fuels Data Center: Heavy-Duty Vehicle Emissions Reduction Grants on Delicious Rank Alternative Fuels Data Center: Heavy-Duty Vehicle Emissions Reduction Grants on Digg Find More places to share Alternative Fuels Data Center: Heavy-Duty Vehicle Emissions Reduction Grants on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Heavy-Duty Vehicle Emissions Reduction Grants

217

Advanced Vehicle Testing Activity: Medium- and Heavy-Duty Vehicles  

NLE Websites -- All DOE Office Websites (Extended Search)

Medium- and Medium- and Heavy-Duty Vehicles to someone by E-mail Share Advanced Vehicle Testing Activity: Medium- and Heavy-Duty Vehicles on Facebook Tweet about Advanced Vehicle Testing Activity: Medium- and Heavy-Duty Vehicles on Twitter Bookmark Advanced Vehicle Testing Activity: Medium- and Heavy-Duty Vehicles on Google Bookmark Advanced Vehicle Testing Activity: Medium- and Heavy-Duty Vehicles on Delicious Rank Advanced Vehicle Testing Activity: Medium- and Heavy-Duty Vehicles on Digg Find More places to share Advanced Vehicle Testing Activity: Medium- and Heavy-Duty Vehicles on AddThis.com... Home Overview Light-Duty Vehicles Medium- and Heavy-Duty Vehicles Transit Vehicles Trucks Idle Reduction Oil Bypass Filter Airport Ground Support Equipment Medium and Heavy Duty Hybrid Electric Vehicles

218

Effects of Gaseous Sulphuric Acid on Diesel Exhaust Nanoparticle Formation and Characteristics  

Science Journals Connector (OSTI)

Effects of Gaseous Sulphuric Acid on Diesel Exhaust Nanoparticle Formation and Characteristics ... Diesel exhaust gaseous sulphuric acid (GSA) concentrations and particle size distributions, concentrations, and volatility were studied at four driving conditions with a heavy duty diesel engine equipped with oxidative exhaust after-treatment. ... The submicrometer diesel exhaust particles are typically divided into two separate groups, which are frequently seen in exhaust particle number size distribution as separate modes, usually called as an accumulation or a soot mode and a nucleation mode. ...

Topi Rönkkö; Tero Lähde; Juha Heikkilä; Liisa Pirjola; Ulrike Bauschke; Frank Arnold; Hans Schlager; Dieter Rothe; Jaakko Yli-Ojanperä; Jorma Keskinen

2013-09-17T23:59:59.000Z

219

Policy Discussion- Heavy-Duty Truck Fuel Economy  

Energy.gov (U.S. Department of Energy (DOE))

2004 Diesel Engine Emissions Reduction (DEER) Conference Presesntation: National Commission on Energy Policy

220

Engine coolant testing: Second symposium  

SciTech Connect

This book presents the papers given at a symposium on the performance testing of engine coolants. Topics considered at the symposium included test methods for the development of supplemental additives for heavy-duty diesel engine coolants, a review of factors influencing coolant-metal interfaces in engines, corrosivity, and the evaluation of engine coolants by electrochemical methods.

Beal, R.E.

1984-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "heavy-duty diesel engines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Vehicle Technologies Office Merit Review 2014: Design Optimization of Piezoceramic Multilayer Actuators for Heavy Duty Diesel Engine Fuel Injectors  

Energy.gov (U.S. Department of Energy (DOE))

Presentation given by Oak Ridge National Laboratory at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about design...

222

Effect of Advanced Aftertreatment for PM and NOx Reduction on Heavy-Duty Diesel Engine Ultrafine Particle Emissions  

Science Journals Connector (OSTI)

CARB’s mission is to promote and protect public health, welfare, and ecological resources through effective reduction of air pollutants while recognizing and considering effects on the economy. ... Compared to the baseline vehicle, particles from vehicles with controls (except of the Hybrid-CCRT) had a higher mass sp. ... California Air Resources Board, MLD Method 139 - Procedure for Organic Carbon and Elemental Carbon (OC/EC) Analysis of Vehicular Exhaust Particulate Matter (PM) on Quartz Filters. ...

Jorn Dinh Herner; Shaohua Hu; William H. Robertson; Tao Huai; M.-C. Oliver Chang; Paul Rieger; Alberto Ayala

2011-02-15T23:59:59.000Z

223

HEAVY-DUTY TRUCK EMISSIONS AND FUEL CONSUMPTION SIMULATING REAL...  

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

HEAVY-DUTY TRUCK EMISSIONS AND FUEL CONSUMPTION SIMULATING REAL-WORLD DRIVING IN LABORATORY CONDITIONS HEAVY-DUTY TRUCK EMISSIONS AND FUEL CONSUMPTION SIMULATING REAL-WORLD DRIVING...

224

North American Market Challenges for Diesel Engines | Department...  

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

North American Market Challenges for Diesel Engines North American Market Challenges for Diesel Engines 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Gale...

225

Future Breathing System Requirements for Clean Diesel Engines...  

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

Breathing System Requirements for Clean Diesel Engines Future Breathing System Requirements for Clean Diesel Engines Poster presentation at the 2007 Diesel Engine-Efficiency &...

226

Achieving High-Effiency Clean Ccombustion in Diesel Engines ...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Achieving High-Effiency Clean Ccombustion in Diesel Engines Achieving High-Effiency Clean Ccombustion in Diesel Engines 2004 Diesel Engine Emissions Reduction (DEER) Conference...

227

Technical Challenges and Opportunities Light-Duty Diesel Engines...  

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

Challenges and Opportunities Light-Duty Diesel Engines in North America Technical Challenges and Opportunities Light-Duty Diesel Engines in North America 2005 Diesel Engine...

228

SCR & DPF RETROFITS FOR MOBILE DIESEL ENGINES | Department of...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

SCR & DPF RETROFITS FOR MOBILE DIESEL ENGINES SCR & DPF RETROFITS FOR MOBILE DIESEL ENGINES 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters...

229

How Exhaust Emissions Drive Diesel Engine Fuel Efficiency | Department...  

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

How Exhaust Emissions Drive Diesel Engine Fuel Efficiency How Exhaust Emissions Drive Diesel Engine Fuel Efficiency 2004 Diesel Engine Emissions Reduction (DEER) Conference...

230

Perspectives Regarding Diesel Engine Emissions Reduction in the...  

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

Perspectives Regarding Diesel Engine Emissions Reduction in the Northeast Perspectives Regarding Diesel Engine Emissions Reduction in the Northeast 2004 Diesel Engine Emissions...

231

Hydrogen as a Supplemental Fuel in Diesel Engines | Department...  

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

as a Supplemental Fuel in Diesel Engines Hydrogen as a Supplemental Fuel in Diesel Engines Poster presentation from the 2007 Diesel Engine-Efficiency & Emissions Research...

232

Next Generation Diesel Engine Control | Department of Energy  

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

Diesel Engine Control Next Generation Diesel Engine Control Presentation given at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007,...

233

Effects of diesel injection pressure on the performance and emissions of a HD common-rail diesel engine fueled with diesel/methanol dual fuel  

Science Journals Connector (OSTI)

Abstract The diesel/methanol dual fuel (DMDF) combustion mode was conducted on a turbo-charged, inter-cooling diesel engine with 6-cylinder for the heavy duty (HD) vehicle. In DMDF mode, methanol is injected into the intake port to form lean air/methanol premixed mixture, and then ignited by the direct-injected diesel fuel in cylinder. This study is aimed to investigate the effect of diesel injection pressure on the characteristics of performance and exhaust emissions from the engine with common-rail fuel system. The experimental results show that at low injection pressure, the IMEP of DMDF mode is lower than that of pure diesel combustion (D) mode. COVIEMP of DMDF mode firstly decreases and then increases with increasing injection pressure, and it remains under 2.1% for all the tests. It is found that the combustion duration in DMDF mode becomes shorter, the maximum cylinder pressure and the peak heat release rate increase, and CA50 gets close to the top dead center as the injection pressure increases. BSFC of DMDF mode decreases with the increase of injection pressure, and is lower than that of D mode for injection pressure over 115 MPa. Both of NOX and smoke emissions are reduced in DMDF mode. But smoke decreases and NOX increases as the diesel injection pressure increases in DMDF mode. DMDF generates lower NO and CO2 emissions, while produces higher HC, CO, andNO2 emissions compared to D mode. As the diesel injection pressure increases, CO and HC emissions are decreased, however, CO2 and NO2 emissions are slightly increased.

Junheng Liu; Anren Yao; Chunde Yao

2015-01-01T23:59:59.000Z

234

SCR SYSTEMS FOR HEAVY DUTY TRUCKS: PROGRESS TOWARDS MEETING EURO 4 EMISSION STANDARDS IN 2005  

SciTech Connect

Emissions of diesel engines contain some components, which support the generation of smog and which are classified hazardous. Exhaust gas aftertreatment is a powerful tool to reduce the NOx and Particulate emissions. The NOx-emission can be reduced by the SCR technology. SCR stands for Selective Catalytic Reduction. A reduction agent has to be injected into the exhaust upstream of a catalyst. On the catalyst the NOx is reduced to N2 (Nitrogen) and H2O (Water). This catalytic process was developed in Japan about 30 years ago to reduce the NOx emission of coal-fired power plants. The first reduction agent used was anhydrous ammonia (NH3). SCR technology was used with diesel engines starting mid of the 80s. First applications were stationary operating generator-sets. In 1991 a joint development between DaimlerChrysler, MAN, IVECO and Siemens was started to use SCR technology for the reduction of heavy duty trucks. Several fleet tests demonstrated the durability of the systems. To day, SCR technology is the most promising technology to fulfill the new European Regulations EURO 4 and EURO 5 being effective Oct. 2005 and Oct. 2008. The efficient NOx reduction of the catalyst allows an engine calibration for low fuel consumption. DaimlerChrysler decided to use the SCR technology on every heavy duty truck and bus in Europe and many other truck manufacturers will introduce SCR technology to fulfill the 2005 emission regulation. The truck manufacturers in Europe agreed to use aqueous solution of Urea as reducing agent. The product is called AdBlue. AdBlue is a non toxic, non smelling liquid. The consumption is about 5% of the diesel fuel consumption to reduce the NOx emissions. A small AdBlue tank has to be installed to the vehicle. With an electronically controlled dosing system the AdBlue is injected into the exhaust. The dosing system is simple and durable. It has proven its durability during winter and summer testing as well as in fleet tests. The infrastructure for AdBlue is under evaluation in Europe by Urea Producers and Mineral Oil companies to be readily available in time. Urea is one of the most common chemical products in the world and the production and the distribution very much experienced. However, a pure grade is needed for automotive application and requires special attention.

Frank, W; Huethwohl, G; Maurer, B

2003-08-24T23:59:59.000Z

235

The California Demonstration Program for Control of PM from Diesel...  

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

Backup Generators (BUGs) CARB Verification of Catalyzed Diesel Particulate Filters for Emergency Generator Sets Measuring "Real World" Heavy-Duty Diesel Emissions with a Mobile Lab...

236

Engine Materials for Clean Diesel Technology: An Overview | Department...  

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

Materials for Clean Diesel Technology: An Overview Engine Materials for Clean Diesel Technology: An Overview Presentation given at the 2007 Diesel Engine-Efficiency & Emissions...

237

Fuel Consumption Monitoring and Diesel Engines  

Science Journals Connector (OSTI)

In a perspective to explore how fuel monitoring and diesel engine life are interconnected, it’s necessary to ... touch several issues such as specifics of diesel engines in fuel consumption, the effects of precis...

Anna Antimiichuk

2014-09-01T23:59:59.000Z

238

SCR Potential and Issues for Heavy-Duty Applications in the United States  

Energy.gov (U.S. Department of Energy (DOE))

2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Daimler Chrysler Detroit Diesel Corporation

239

Experimental Determination of the Efficiency and Emissions of a Residential Microcogeneration System Based on a Stirling Engine and Fueled by Diesel and Ethanol  

Science Journals Connector (OSTI)

Some of the diesel fuel properties were obtained from fuel certification tests conducted by the Alberta Research Council and established by the American Society for Testing and Materials, and the remainder are reported general properties. ... Clucas, D. M.Development of a Stirling engine battery charger based on a low cost wobble mechanism, Ph.D. Thesis, Department of Mechanical Engineering, University of Canterbury, Christchurch, New Zealand, 1993. ... investigation is conducted to evaluate the effects of using blends of ethanol with conventional diesel fuel, with 5% and 10% (by vol.) ethanol, on the performance and exhaust emissions of a fully instrumented, six-cylinder, turbocharged and after-cooled, heavy duty, direct injection (DI), Mercedes-Benz engine, installed at the authors' lab., which is used to power the mini-bus diesel engines of the Athens Urban Transport Organization sub-fleet with a view to using bio-ethanol produced from Greek feedstock. ...

Nicolas Farra; Tommy Tzanetakis; Murray J. Thomson

2012-01-27T23:59:59.000Z

240

Assessment of the validity of conductivity as an estimate of total dissolved solids in heavy-duty coolants  

SciTech Connect

Conductivity is widely used in the analysis of heavy-duty coolants to estimate total dissolved solids. TDS is of concern in heavy-duty coolants because the practice of adding supplemental coolant additives (SCAs) to the coolant can lead to overloading and to subsequent water pump seal weepage and failure. Conductivity has the advantage of being quick and easy to measure and the equipment is inexpensive. However, questions are continually raised as to whether conductivity truly is a valid method of estimating TDS and, if so, over what concentration range. The introduction of new chemistries in heavy-duty coolants and new extended service interval (ESI) technologies prompts a critical assessment. Conductivity and TDS measurements for all of the coolants and SCAs used in heavy-duty engines in North America will be presented. The effects of glycol concentration on conductivity will also be examined.

Carr, R.P. [Penray Companies, Inc., Wheeling, IL (United States)

1999-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "heavy-duty diesel engines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Properties and Performance of Levulinate Esters as Diesel Blend Components  

Science Journals Connector (OSTI)

The esters were treated with the cetane-enhancing compound 2-ethyl hexyl nitrate and were tested as blends with diesel fuel in a 2008 model year Cummins ISB engine with the measurement of regulated pollutant emissions over the federal heavy duty diesel transient cycle. ... The various approaches to biomass conversion can be divided into two general types: thermochemical (gasification, pyrolysis, acid hydrolysis, combustion, and liquefaction) and biochemical (fermentation, enzymatic hydrolysis, and anaerobic and aerobic digestion). ...

Earl Christensen; Aaron Williams; Stephen Paul; Steve Burton; Robert L. McCormick

2011-10-05T23:59:59.000Z

242

An Experimental Investigation of the Origin of Increased NOx Emissions When Fueling a Heavy-Duty Compression-Ignition Engine with Soy Biodiesel  

Energy.gov (U.S. Department of Energy (DOE))

Optical engine experiments suggest that near stoichiometric charge-gas mixtures in the standing premixed autoignition zone near flame lift-off length explains biodiesel NOx increase under all conditions

243

Zero Emission Heavy Duty Drayage Truck Demonstration | Department...  

Office of Environmental Management (EM)

Zero Emission Heavy Duty Drayage Truck Demonstration 2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation...

244

Fleet test evaluation of fully formulated heavy-duty coolant technology maintained with a delayed-release filter compared with coolant inhibited with a nitrited organic acid technology: An interim report  

SciTech Connect

This paper is a controlled extended service interval (ESI) study of the comparative behaviors of a nitrite/borate/low-silicate, low total dissolved solids (TDS) coolant maintained with delayed-release filters, and an organic acid inhibited coolant technology in heavy-duty engines. It reports both laboratory and fleet test data from 66 trucks, powered with different makes of heavy-duty diesel engines. The engines were cooled with three different types of inhibitors and two different glycol base (ethylene glycol and propylene glycol) coolants for an initial period exceeding two years and 500,000 km (300,000 miles). The data reported include chemical depletion rates, periodic coolant chemical analyses, and engine/cooling system reliability experience. The ongoing test will continue for approximately five years and a 1.6 million km (1 million miles) duration. Thirteen trucks were retained as controls, operating with ASTM D 4985 specification (GM-6038 type) coolant maintained with a standard ASTM D 57542 supplemental coolant additive (SCA). Engines produced by Caterpillar, Detroit Diesel Corp., Cummins Engine Co., and Mack Trucks are included in the test mix.

Aroyan, S.S.; Eaton, E.R. [Penray Companies, Inc., Elk Grove Village, IL (United States). Technical Service

1999-08-01T23:59:59.000Z

245

Inevitability of Engine-Out Nox Emissions from Spark-Ignition and Diesel Engines  

SciTech Connect

Internal combustion engines, both spark ignition and Diesel, are dominant types of vehicle power sources and also provide power for other important stationary applications. Overall, these engines are a central part of power generation in modern society. However, these engines, burning hydrocarbon fuels from natural gas to gasoline and Diesel fuel, are also responsible for a great deal of pollutant emissions to the environment, especially oxides of nitrogen (NO{sub x}) and unburned hydrocarbons (UHC). In recent years, pollutant species emissions from internal combustion engines have been the object of steadily more stringent limitations from various governmental agencies. Engine designers have responded by developing engines that reduce emissions to accommodate these tighter limitations. However, as these limits become ever more stringent, the ability of engine design modifications to meet those limits must be questioned. Production of NO{sub x} in internal combustion engines is primarily due to the high temperature extended Zeldovich reaction mechanism: (1) O + N{sub 2} = NO + N; (2) N + O{sub 2} = NO + O; and (3) N + OH = NO + H. The rates of these reactions become significant when combustion temperatures reach or exceed about 2000K. This large temperature dependence, characterized by large activation energies for the rates of the reactions listed here, is a direct result of the need to break apart the tightly bonded oxygen and nitrogen molecules. The strongest bond is the triple bond in the N {triple_bond} N molecule, resulting in an activation energy of about 75 kcal/mole for Reaction (1), which is the principal cause for the large temperature dependence of the extended Zeldovich NO{sub x} mechanism. In most engines, NO{sub x} is therefore produced primarily in the high temperature combustion product gases. Using a reliable kinetic model for NO{sub x} production such as the GRI Mechanism [1] or the Miller-Bowman model [2] with hydrocarbon products at temperatures from 1500K through 2500K, the amounts of NO{sub x} produced at a given residence time in an engine can easily be computed, as shown in Figure 1. Figure 1 depicts how temperatures such as those existing in the combustion zones of heavy-duty engines would produce NO{sub x} emissions. This figure was created assuming that a fuel/air equivalence ratio {phi} of 0.65 was used to heat the combustion air. This equivalence ratio would be similar to that of a heavy-duty lean-burn spark-ignition or diesel engine. At temperatures in the neighborhood of 2000K and residence times between 1-5 milliseconds, which are typical of residence times at these temperatures in engines, the production of NO{sub x} increases dramatically. It is evident from Fig. 1 that product temperatures must remain below approximately 2100K to achieve extremely low NO{sub x} production levels in engines. This conclusion led to a combined experimental and modeling study of product gas temperatures in engine combustion and their influence on emission levels.

Flynn, P F; Hunter, G L; Farrell, L A; Durrett, R P; Akinyemi, O C; Westbrook, C K; Pitz, W J

2000-01-11T23:59:59.000Z

246

Thermodynamic Systems for Tier 2 Bin 2 Diesel Engines | Department...  

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

Systems for Tier 2 Bin 2 Diesel Engines Thermodynamic Systems for Tier 2 Bin 2 Diesel Engines Discusses engine technology enablers that help achieve overall system integration...

247

Cytotoxicity and Inflammatory Potential of Soot Particles of Low-Emission Diesel Engines  

Science Journals Connector (OSTI)

This effect is assigned to the defective surface structure of Euro IV diesel soot, rendering it highly active. ... Since the implementation of the 1970 Clean Air Act in the United States of America, progress has been made in the reduction of exhaust gas and soot emissions of light-duty and heavy-duty vehicles (passenger cars and trucks). ...

Dang Sheng Su; Annalucia Serafino; Jens-Oliver Müller; Rolf E. Jentoft; Robert Schlögl; Silvana Fiorito

2008-01-25T23:59:59.000Z

248

Lung Toxicity and Mutagenicity of Emissions From Heavy-Duty Compressed...  

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

Lung Toxicity and Mutagenicity of Emissions From Heavy-Duty Compressed Natural Gas (CNG)-Powered Vehicles Lung Toxicity and Mutagenicity of Emissions From Heavy-Duty Compressed...

249

Staged direct injection diesel engine  

DOE Patents (OSTI)

A diesel engine having staged injection for using lower cetane number fuels than No. 2 diesel fuel. The engine includes a main fuel injector and a pilot fuel injector. Pilot and main fuel may be the same fuel. The pilot injector injects from five to fifteen percent of the total fuel at timings from 20.degree. to 180.degree. BTDC depending upon the quantity of pilot fuel injected, the fuel cetane number and speed and load. The pilot fuel injector is directed toward the centerline of the diesel cylinder and at an angle toward the top of the piston, avoiding the walls of the cylinder. Stratification of the early injected pilot fuel is needed to reduce the fuel-air mixing rate, prevent loss of pilot fuel to quench zones, and keep the fuel-air mixture from becoming too fuel lean to become effective. In one embodiment, the pilot fuel injector includes a single hole for injection of the fuel and is directed at approximately 48.degree. below the head of the cylinder.

Baker, Quentin A. (San Antonio, TX)

1985-01-01T23:59:59.000Z

250

Diesel Engine Alternatives | Department of Energy  

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

Alternatives Diesel Engine Alternatives 2003 DEER Conference Presentation: Southwest Research Institute 2003deerryan.pdf More Documents & Publications Combustion Targets for Low...

251

Diesel Engine Emission Reduction (DEER) Experiment | Department...  

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

Emission Reduction (DEER) Experiment Diesel Engine Emission Reduction (DEER) Experiment Presentation given at DEER 2006, August 20-24, 2006, Detroit, Michigan. Sponsored by the...

252

"Performance, Emission and Particle distribution of Diesel Engines Fueled with Diesel-Dimethoxymethane (DMM) Blends"  

E-Print Network (OSTI)

Xibin Wang "Performance, Emission and Particle distribution of Diesel Engines Fueled with Diesel-Dimethoxymethane (DMM) Blends" Abstract : Combustion, performance and emission were studied for DI diesel engine fuelled with DMM/diesel fuel blends for DMM content from 0 to 50%. Results showed that, for diesel engine with fuel

253

Vehicle Technologies Office: 2004 Diesel Engine Emissions Reduction (DEER)  

NLE Websites -- All DOE Office Websites (Extended Search)

Diesel Engine Diesel Engine Emissions Reduction (DEER) Conference Presentations to someone by E-mail Share Vehicle Technologies Office: 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentations on Facebook Tweet about Vehicle Technologies Office: 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentations on Twitter Bookmark Vehicle Technologies Office: 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentations on Google Bookmark Vehicle Technologies Office: 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentations on Delicious Rank Vehicle Technologies Office: 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentations on Digg Find More places to share Vehicle Technologies Office: 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentations on

254

Complete Fuel Combustion for Diesel Engines Resulting in Greatly...  

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

Complete Fuel Combustion for Diesel Engines Resulting in Greatly Reduced Emissions and Improved Fuel Efficiency Complete Fuel Combustion for Diesel Engines Resulting in Greatly...

255

Technology Development for High Efficiency Clean Diesel Engines...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Technology Development for High Efficiency Clean Diesel Engines and a Pathway to 50% Thermal Efficiency Technology Development for High Efficiency Clean Diesel Engines and a...

256

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

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

Diesel Engine Progress Report CumminsDOE Light Truck Diesel Engine Progress Report 2002 DEER Conference Presentation: Cummins 2002deerstang.pdf More Documents & Publications...

257

Progress on DOE Vehicle Technologies Light-Duty Diesel Engine...  

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

DOE Vehicle Technologies Light-Duty Diesel Engine Efficiency and Emissions Milestones Progress on DOE Vehicle Technologies Light-Duty Diesel Engine Efficiency and Emissions...

258

Impact of Real Field Diesel Quality Variability on Engine Emissions...  

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

Real Field Diesel Quality Variability on Engine Emissions and Fuel Consumption Solutions for Onboard Optimisation Impact of Real Field Diesel Quality Variability on Engine...

259

Advanced Diesel Engine Technology Development for HECC | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Diesel Engine Technology Development for HECC Advanced Diesel Engine Technology Development for HECC 2010 DOE Vehicle Technologies and Hydrogen Programs Annual Merit Review and...

260

A Correlation of Diesel Engine Performance with Measured NIR...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

A Correlation of Diesel Engine Performance with Measured NIR Fuel Characteristics A Correlation of Diesel Engine Performance with Measured NIR Fuel Characteristics Results indicate...

Note: This page contains sample records for the topic "heavy-duty diesel engines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Durability of Diesel Engine Particulate Filters (Agreement ID...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Durability of Diesel Engine Particulate Filters (Agreement ID:10461) Durability of Diesel Engine Particulate Filters (Agreement ID:10461) 2013 DOE Hydrogen and Fuel Cells Program...

262

Update on Modeling for Effective Diesel Engine Aftertreatment...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Update on Modeling for Effective Diesel Engine Aftertreatment Implementation - Master Plan, Status and Critical Needs Update on Modeling for Effective Diesel Engine Aftertreatment...

263

Advances in Diesel Engine Technologies for European Passenger...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Advances in Diesel Engine Technologies for European Passenger Vehicles Advances in Diesel Engine Technologies for European Passenger Vehicles 2002 DEER Conference Presentation:...

264

Oxygen-Enriched Combustion for Military Diesel Engine Generators...  

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

Combustion for Military Diesel Engine Generators Oxygen-Enriched Combustion for Military Diesel Engine Generators Substantial increases in brake power and considerably lower peak...

265

Recent Diesel Engine Emission Mitigation Activities of the Maritime...  

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

Diesel Engine Emission Mitigation Activities of the Maritime Administration Energy Technologies Program Recent Diesel Engine Emission Mitigation Activities of the Maritime...

266

12TH DIESEL ENGINE-EFFICIENCY AND EMISSIONS RESEARCH CONFERENCE...  

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

2TH DIESEL ENGINE-EFFICIENCY AND EMISSIONS RESEARCH CONFERENCE (DEER 2006) PRESENTATIONS 12TH DIESEL ENGINE-EFFICIENCY AND EMISSIONS RESEARCH CONFERENCE (DEER 2006) PRESENTATIONS...

267

Effects of an Accelerated Diesel Engine Replacement/Retrofit Program  

E-Print Network (OSTI)

No. 894 Effects of an Accelerated Diesel Engine Replacement/2009 Effects of an Accelerated Diesel Engine Replacement/reductions occurring on an accelerated schedule compared to

Millstein, Dev E.; Harley, Robert A

2009-01-01T23:59:59.000Z

268

Load Expansion with Diesel/Gasoline RCCI for Improved Engine...  

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

with DieselGasoline RCCI for Improved Engine Efficiency and Emissions Load Expansion with DieselGasoline RCCI for Improved Engine Efficiency and Emissions This poster will...

269

In Vitro Genotoxicity of Gasoline and Diesel Engine Vehicle Exhaust...  

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

Gasoline and Diesel Engine Vehicle Exhaust Particulate and Semi-Volatile Organic Compound Materials In Vitro Genotoxicity of Gasoline and Diesel Engine Vehicle Exhaust Particulate...

270

Diesel Engine Oil Technology Insights and Opportunities | Department...  

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

Oil Technology Insights and Opportunities Diesel Engine Oil Technology Insights and Opportunities Perrformance of API CJ-4 diesel engine lubricating oil and emerging lubricant...

271

Heavy-Duty Low-Temperature and Diesel Combustion & Heavy-Duty Combustion Modeling  

Energy.gov (U.S. Department of Energy (DOE))

2009 DOE Hydrogen Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting, May 18-22, 2009 -- Washington D.C.

272

Heavy-Duty Low-Temperature and Diesel Combustion & Heavy-Duty Combustion Modeling  

Energy.gov (U.S. Department of Energy (DOE))

2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation

273

Heavy-Duty Low-Temperature and Diesel Combustion & Heavy-Duty Combustion Modeling  

Energy.gov (U.S. Department of Energy (DOE))

2010 DOE Vehicle Technologies and Hydrogen Programs Annual Merit Review and Peer Evaluation Meeting, June 7-11, 2010 -- Washington D.C.

274

Heavy-Duty Low-Temperature and Diesel Combustion & Heavy-Duty Combustion Modeling  

Energy.gov (U.S. Department of Energy (DOE))

2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

275

Heavy-Duty Low-Temperature and Diesel Combustion & Heavy-Duty Combustion Modeling  

Energy.gov (U.S. Department of Energy (DOE))

2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

276

Heavy-Duty Low-Temperature and Diesel Combustion & Heavy-Duty...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Musculus 425 RelevanceObjectives: H-D In-Cylinder Combustion Current Objectives: SNL - Spatialtemporal evolution of LTC soot-precursors SNL - Injector dribble effects on UHC ...

277

Heavy-Duty Low-Temperature and Diesel Combustion & Heavy-Duty...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

soot are affected by targeting: vary the injection spray angle andor swirl - Use planar-laser diagnostics (fuel tracer PLIF, formaldehyde PLIF) to understand mixing, ignition,...

278

Combustion Modeling for Diesel Engine Control Design  

E-Print Network (OSTI)

Combustion Modeling for Diesel Engine Control Design Von der Fakult¨at f¨ur Maschinenwesen der Combustion Modeling for Diesel Engine Control Design WICHTIG: D 82 überprüfen !!! #12;Bibliographic research stays at General Motors R&D in Warren, MI, USA, possible. Furthermore, I would like thank Tom

Peters, Norbert

279

Clean Cities Guide to Alternative Fuel and Advanced Medium- and Heavy-Duty Vehicles (Book)  

SciTech Connect

Today's fleets are increasingly interested in medium-duty and heavy-duty vehicles that use alternative fuels or advanced technologies that can help reduce operating costs, meet emissions requirements, improve fleet sustainability, and support U.S. energy independence. Vehicle and engine manufacturers are responding to this interest with a wide range of options across a steadily growing number of vehicle applications. This guide provides an overview of alternative fuel power systems?including engines, microturbines, electric motors, and fuel cells?and hybrid propulsion systems. The guide also offers a list of individual medium- and heavy-duty vehicle models listed by application, along with associated manufacturer contact information, fuel type(s), power source(s), and related information.

Not Available

2013-08-01T23:59:59.000Z

280

California Policy Stimulates Carbon Negative CNG for Heavy Duty...  

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

Negative CNG for Heavy Duty Trucks Describes system for fueling truck fleet with biomethane generated from anaerobic digestion of organic waste it collects p-10edgar.pdf More...

Note: This page contains sample records for the topic "heavy-duty diesel engines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

(1) Elements of Diesel Engineering: (2) Diesel and other Internal-Combustion Engines: (3) Diesel Engines  

Science Journals Connector (OSTI)

... publications arising from its importance from scientific, technical and commercial points of view, the Diesel ...

1937-01-30T23:59:59.000Z

282

Thermal barrier coatings application in diesel engines  

SciTech Connect

Commercial use of thermal barrier coatings in diesel engines began in the mid 70`s by Dr. Ingard Kvernes at the Central Institute for Industrial Research in Oslo, Norway. Dr. Kvernes attributed attack on diesel engine valves and piston crowns encountered in marine diesel engines in Norwegian ships as hot-corrosion attributed to a reduced quality of residual fuel. His solution was to coat these components to reduce metal temperature below the threshold of aggressive hot-corrosion and also provide protection. Roy Kamo introduced thermal barrier coatings in his `Adiabatic Diesel Engine` in the late 70`s. Kamo`s concept was to eliminate the engine block water cooling system and reduce heat losses. Roy reported significant performance improvements in his thermally insulated engine at the SAE Congress in 1982. Kamo`s work stimulates major programs with insulated engines, particularly in Europe. Most of the major diesel engine manufacturers conducted some level of test with insulated combustion chamber components. They initially ran into increased fuel consumption. The German engine consortium had Prof. Woschni of the Technical Institute in Munich. Woschni conducted testing with pistons with air gaps to provide the insulation effects. Woschni indicated the hot walls of the insulated engine created a major increase in heat transfer he refers to as `convection vive.` Woschni`s work was a major factor in the abrupt curtailment of insulated diesel engine work in continental Europe. Ricardo in the UK suggested that combustion should be reoptimized for the hot-wall effects of the insulated combustion chamber and showed under a narrow range of conditions fuel economy could be improved. The Department of Energy has supported thermal barrier coating development for diesel engine applications. In the Clean Diesel - 50 Percent Efficient (CD-50) engine for the year 2000, thermal barrier coatings will be used on piston crowns and possibly other components.

Fairbanks, J.W.

1995-10-01T23:59:59.000Z

283

Robust Strategy for Intake Leakage Detection in Diesel Engines  

E-Print Network (OSTI)

Robust Strategy for Intake Leakage Detection in Diesel Engines Riccardo Ceccarelli , Philippe are provided using advanced Diesel engine developed under AMEsim. I. INTRODUCTION The modern Diesel engine has of the functioning of a air-path in a Diesel engine with exhaust gas recirculation circuit is presented. More

Boyer, Edmond

284

Neural-Network-Based Maintenance Decision Model for Diesel Engine  

Science Journals Connector (OSTI)

To decrease the fuzzy and uncertain factors in the maintenance decision models of diesel engine, a combination BP-neural-network-based maintenance decision model for diesel engine is presented in this paper. It can make the maintenance of diesel engine ... Keywords: Deterioration degree, Diesel engine, Maintenance decision, Neural network

Yingkui Gu; Juanjuan Liu; Shuyun Tang

2008-09-01T23:59:59.000Z

285

Diesel Engine Waste Heat Recovery Utilizing Electric Turbocompound Technology  

Energy.gov (U.S. Department of Energy (DOE))

2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Caterpillar/U.S. Department of Energy

286

Technology Development for Light Duty High Efficient Diesel Engines  

Energy.gov (U.S. Department of Energy (DOE))

Improve the efficiency of diesel engines for light duty applications through technical advances in system optimization.

287

Effect of GTL Diesel Fuels on Emissions and Engine Performance  

Energy.gov (U.S. Department of Energy (DOE))

2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: DaimlerChrysler Research and Technology

288

Comparative evaluation of three alternative power cycles for waste heat recovery from the exhaust of adiabatic diesel engines  

SciTech Connect

Three alternative power cycles were compared in application as an exhaust-gas heat-recovery system for use with advanced ''adiabatic'' diesel engines. The power cycle alternatives considered were steam Rankine, organic Rankine with RC-1 as the working fluid, and variations of an air Brayton cycle. The comparison was made in terms of fuel economy and economic payback potential for heavy-duty trucks operating in line-haul service. The results indicate that, in terms of engine rated specific fuel consumption, a diesel/alternative-power-cycle engine offers a significant improvement over the turbocompound diesel used as the baseline for comparison. The maximum improvement resulted from the use of a Rankine cycle heat-recovery system in series with turbocompounding. The air Brayton cycle alternatives studied, which included both simple-cycle and compression-intercooled configurations, were less effective and provided about half the fuel consumption improvement of the Rankine cycle alternatives under the same conditions. Capital and maintenance cost estimates were also developed for each of the heat-recovery power cycle systems. These costs were integrated with the fuel savings to identify the time required for net annual savings to pay back the initial capital investment. The sensitivity of capital payback time to arbitrary increases in fuel price, not accompanied by corresponding hardware cost inflation, was also examined. The results indicate that a fuel price increase is required for the alternative power cycles to pay back capital within an acceptable time period.

Bailey, M.M.

1985-07-01T23:59:59.000Z

289

Vehicle Technologies Office: 2008 Diesel Engine-Efficiency and Emissions  

NLE Websites -- All DOE Office Websites (Extended Search)

8 Diesel 8 Diesel Engine-Efficiency and Emissions Research (DEER) Conference Presentations to someone by E-mail Share Vehicle Technologies Office: 2008 Diesel Engine-Efficiency and Emissions Research (DEER) Conference Presentations on Facebook Tweet about Vehicle Technologies Office: 2008 Diesel Engine-Efficiency and Emissions Research (DEER) Conference Presentations on Twitter Bookmark Vehicle Technologies Office: 2008 Diesel Engine-Efficiency and Emissions Research (DEER) Conference Presentations on Google Bookmark Vehicle Technologies Office: 2008 Diesel Engine-Efficiency and Emissions Research (DEER) Conference Presentations on Delicious Rank Vehicle Technologies Office: 2008 Diesel Engine-Efficiency and Emissions Research (DEER) Conference Presentations on Digg

290

Vehicle Technologies Office: 2007 Diesel Engine-Efficiency and Emissions  

NLE Websites -- All DOE Office Websites (Extended Search)

7 Diesel 7 Diesel Engine-Efficiency and Emissions Research (DEER) Conference Presentations to someone by E-mail Share Vehicle Technologies Office: 2007 Diesel Engine-Efficiency and Emissions Research (DEER) Conference Presentations on Facebook Tweet about Vehicle Technologies Office: 2007 Diesel Engine-Efficiency and Emissions Research (DEER) Conference Presentations on Twitter Bookmark Vehicle Technologies Office: 2007 Diesel Engine-Efficiency and Emissions Research (DEER) Conference Presentations on Google Bookmark Vehicle Technologies Office: 2007 Diesel Engine-Efficiency and Emissions Research (DEER) Conference Presentations on Delicious Rank Vehicle Technologies Office: 2007 Diesel Engine-Efficiency and Emissions Research (DEER) Conference Presentations on Digg

291

Alternative Fuels Data Center: Heavy-Duty Truck Idle Reduction Requirements  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Heavy-Duty Truck Idle Heavy-Duty Truck Idle Reduction Requirements to someone by E-mail Share Alternative Fuels Data Center: Heavy-Duty Truck Idle Reduction Requirements on Facebook Tweet about Alternative Fuels Data Center: Heavy-Duty Truck Idle Reduction Requirements on Twitter Bookmark Alternative Fuels Data Center: Heavy-Duty Truck Idle Reduction Requirements on Google Bookmark Alternative Fuels Data Center: Heavy-Duty Truck Idle Reduction Requirements on Delicious Rank Alternative Fuels Data Center: Heavy-Duty Truck Idle Reduction Requirements on Digg Find More places to share Alternative Fuels Data Center: Heavy-Duty Truck Idle Reduction Requirements on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Heavy-Duty Truck Idle Reduction Requirements

292

Alternative Fuels Data Center: Heavy-Duty Truck Idle Reduction Technologies  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Heavy-Duty Truck Idle Heavy-Duty Truck Idle Reduction Technologies to someone by E-mail Share Alternative Fuels Data Center: Heavy-Duty Truck Idle Reduction Technologies on Facebook Tweet about Alternative Fuels Data Center: Heavy-Duty Truck Idle Reduction Technologies on Twitter Bookmark Alternative Fuels Data Center: Heavy-Duty Truck Idle Reduction Technologies on Google Bookmark Alternative Fuels Data Center: Heavy-Duty Truck Idle Reduction Technologies on Delicious Rank Alternative Fuels Data Center: Heavy-Duty Truck Idle Reduction Technologies on Digg Find More places to share Alternative Fuels Data Center: Heavy-Duty Truck Idle Reduction Technologies on AddThis.com... More in this section... Idle Reduction Benefits & Considerations Heavy-Duty Vehicles Onboard Equipment Truck Stop Electrification

293

Alternative Fuels Data Center: Heavy-Duty Emissions Reduction Grant Program  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Heavy-Duty Emissions Heavy-Duty Emissions Reduction Grant Program to someone by E-mail Share Alternative Fuels Data Center: Heavy-Duty Emissions Reduction Grant Program on Facebook Tweet about Alternative Fuels Data Center: Heavy-Duty Emissions Reduction Grant Program on Twitter Bookmark Alternative Fuels Data Center: Heavy-Duty Emissions Reduction Grant Program on Google Bookmark Alternative Fuels Data Center: Heavy-Duty Emissions Reduction Grant Program on Delicious Rank Alternative Fuels Data Center: Heavy-Duty Emissions Reduction Grant Program on Digg Find More places to share Alternative Fuels Data Center: Heavy-Duty Emissions Reduction Grant Program on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Heavy-Duty Emissions Reduction Grant Program

294

Guidelines for Improving Diesel Engine Characteristics  

Science Journals Connector (OSTI)

An appropriate amount of EGR can improve cold startability of a diesel engine and promote combustion and emission performance during...x...emissions without a significant penalty for the specific fuel consumption

Breda Kegl; Marko Kegl; Stanislav Pehan

2013-01-01T23:59:59.000Z

295

Oil Bypass Filter and Diesel Engine Idling Wear-Rate Evaluations...  

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

Bypass Filter and Diesel Engine Idling Wear-Rate Evaluations Oil Bypass Filter and Diesel Engine Idling Wear-Rate Evaluations 2005 Diesel Engine Emissions Reduction (DEER)...

296

Heavy-Duty Low Temperature Combustion Development Activities at Caterpillar  

Energy.gov (U.S. Department of Energy (DOE))

Presentation given at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

297

Performance Characterization of a Medium-Duty Diesel Engine with Bio-Diesel and Petroleum Diesel Fuels  

E-Print Network (OSTI)

Torque Performance Curve. ...............35 Figure 9: Torque versus engine speed for conventional diesel fuel for 20%, 60%, and 75% loads....................................................................................36 Figure 10: Cycle fuel flow... versus engine speed for conventional diesel fuel for 20%, 60%, and 75% loads...........................................................................38 Figure 11: BSFC versus engine speed for conventional diesel fuel for 20%, 60%, and 75% load...

Esquivel, Jason

2010-01-16T23:59:59.000Z

299

Evaluating Exhaust Emission Performance of Urban Buses Using Transient Heavy-Duty Chassis Dynamometer  

Energy.gov (U.S. Department of Energy (DOE))

2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: VTT Technical Research Centre of Finland

300

APBF- DEC Heavy-Duty NOx Adsorber/DPF Project: Catalyst Aging Study  

Energy.gov (U.S. Department of Energy (DOE))

2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: National Renewable Energy Laboratory

Note: This page contains sample records for the topic "heavy-duty diesel engines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Analysis, Design, And Evaluation Of AVCS For Heavy-duty Vehicles: Phase 1 Report  

E-Print Network (OSTI)

fuel consumption. iii Contents 1 Introduction 2 Longitudinal Truck Model Turbocharged TC diesel engine

Yanakiev, Diana; Kanellakopoulos, Ioannis

1995-01-01T23:59:59.000Z

302

Thermal barrier coatings application in diesel engines  

SciTech Connect

Commercial use of thermal barrier coatings in diesel engines began in the mid 70`s by Dr. Ingard Kvernes at the Central Institute for Industrial Research in Oslo, Norway. Dr. Kvernes attributed attack on diesel engine valves and piston crowns encountered in marine diesel engines in Norwegian ships as hot-corrosion attributed to a reduced quality of residual fuel. His solution was to coat these components to reduce metal temperature below the threshold of aggressive hot-corrosion and also to provide protection. The Department of Energy has supported thermal barrier coating development for diesel engine applications. In the Clean Diesel - 50 Percent Efficient (CD-50) engine for the year 2000, thermal barrier coatings will be used on piston crowns and possibly other components. The primary purpose of the thermal barrier coatings will be to reduce thermal fatigue as the engine peak cylinder pressure will nearly be doubled. As the coatings result in higher available energy in the exhaust gas, efficiency gains are achieved through use of this energy by turbochargers, turbocompounding or thermoelectric generators.

Fairbanks, J.W.

1995-03-01T23:59:59.000Z

303

Reducing Emissions of a Diesel Engine Using Fumigation Ethanol and a Diesel Oxidation Catalyst  

Science Journals Connector (OSTI)

Reducing Emissions of a Diesel Engine Using Fumigation Ethanol and a Diesel Oxidation Catalyst ... † Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China ... In contrast to the conventional approach of using ethanol in spark-ignition engines, this study demonstrates the potential of ethanol utilization in diesel engines using dual-fuel combustion, where ethanol is injected into the intake manifold and diesel ... ...

K. S. Tsang; Z. H. Zhang; C. S. Cheung; T. L. Chan

2010-10-14T23:59:59.000Z

304

Alternative Fuels Data Center: Truck Stop Electrification for Heavy-Duty  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Truck Stop Truck Stop Electrification for Heavy-Duty Trucks to someone by E-mail Share Alternative Fuels Data Center: Truck Stop Electrification for Heavy-Duty Trucks on Facebook Tweet about Alternative Fuels Data Center: Truck Stop Electrification for Heavy-Duty Trucks on Twitter Bookmark Alternative Fuels Data Center: Truck Stop Electrification for Heavy-Duty Trucks on Google Bookmark Alternative Fuels Data Center: Truck Stop Electrification for Heavy-Duty Trucks on Delicious Rank Alternative Fuels Data Center: Truck Stop Electrification for Heavy-Duty Trucks on Digg Find More places to share Alternative Fuels Data Center: Truck Stop Electrification for Heavy-Duty Trucks on AddThis.com... More in this section... Idle Reduction Benefits & Considerations Heavy-Duty Vehicles

305

Alternative Fuels Data Center: Clean Fuel Contracts for Heavy-Duty  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Clean Fuel Contracts Clean Fuel Contracts for Heavy-Duty Equipment to someone by E-mail Share Alternative Fuels Data Center: Clean Fuel Contracts for Heavy-Duty Equipment on Facebook Tweet about Alternative Fuels Data Center: Clean Fuel Contracts for Heavy-Duty Equipment on Twitter Bookmark Alternative Fuels Data Center: Clean Fuel Contracts for Heavy-Duty Equipment on Google Bookmark Alternative Fuels Data Center: Clean Fuel Contracts for Heavy-Duty Equipment on Delicious Rank Alternative Fuels Data Center: Clean Fuel Contracts for Heavy-Duty Equipment on Digg Find More places to share Alternative Fuels Data Center: Clean Fuel Contracts for Heavy-Duty Equipment on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Clean Fuel Contracts for Heavy-Duty Equipment

306

Alternative Fuels Data Center: Heavy-Duty Vehicle Greenhouse Gas Emissions  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Heavy-Duty Vehicle Heavy-Duty Vehicle Greenhouse Gas Emissions Regulations to someone by E-mail Share Alternative Fuels Data Center: Heavy-Duty Vehicle Greenhouse Gas Emissions Regulations on Facebook Tweet about Alternative Fuels Data Center: Heavy-Duty Vehicle Greenhouse Gas Emissions Regulations on Twitter Bookmark Alternative Fuels Data Center: Heavy-Duty Vehicle Greenhouse Gas Emissions Regulations on Google Bookmark Alternative Fuels Data Center: Heavy-Duty Vehicle Greenhouse Gas Emissions Regulations on Delicious Rank Alternative Fuels Data Center: Heavy-Duty Vehicle Greenhouse Gas Emissions Regulations on Digg Find More places to share Alternative Fuels Data Center: Heavy-Duty Vehicle Greenhouse Gas Emissions Regulations on AddThis.com... More in this section... Federal

307

Alternative Fuels Data Center: Heavy-Duty Alternative Fuel and Advanced  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Heavy-Duty Alternative Heavy-Duty Alternative Fuel and Advanced Vehicle Purchase Vouchers to someone by E-mail Share Alternative Fuels Data Center: Heavy-Duty Alternative Fuel and Advanced Vehicle Purchase Vouchers on Facebook Tweet about Alternative Fuels Data Center: Heavy-Duty Alternative Fuel and Advanced Vehicle Purchase Vouchers on Twitter Bookmark Alternative Fuels Data Center: Heavy-Duty Alternative Fuel and Advanced Vehicle Purchase Vouchers on Google Bookmark Alternative Fuels Data Center: Heavy-Duty Alternative Fuel and Advanced Vehicle Purchase Vouchers on Delicious Rank Alternative Fuels Data Center: Heavy-Duty Alternative Fuel and Advanced Vehicle Purchase Vouchers on Digg Find More places to share Alternative Fuels Data Center: Heavy-Duty Alternative Fuel and Advanced Vehicle Purchase Vouchers on AddThis.com...

308

Diesel-engine fumigation with aqueous ethanol  

SciTech Connect

A three cylinder, two cycle diesel engine, rated at 22KW at 2300 rpm, was fumigated with ethanol of 140-to-200 proofs. P-T diagrams and engine performance were analyzed with particular emphasis on the detection and evaluation of the knock phenomenon. Satisfactory full load operation was obtained with thirty percent of the fuel energy supplied as aqueous ethanol.

McLaughlin, S.L.; Stephenson, K.Q.

1981-01-01T23:59:59.000Z

309

Vehicle Technologies Office Merit Review 2014: Cummins-ORNL/FEERC Emissions CRADA: NOx Control & Measurement Technology for Heavy-Duty Diesel Engines  

Energy.gov (U.S. Department of Energy (DOE))

Presentation given by Oak Ridge National Laboratory at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about Cummins-ORNL...

310

Robust intelligent control design for marine diesel engine  

Science Journals Connector (OSTI)

This work deals with the nonlinear control of a marine diesel engine by use of a robust intelligent control ... controller (CMAC). A mathematical model of diesel engine propulsion system is presented. In order to...

Hai-de Hua ???; Ning Ma ? ?; Jie Ma ? ?…

2013-12-01T23:59:59.000Z

311

Systematic evaluation of the reliability of marine diesel engines  

Science Journals Connector (OSTI)

A systematic model is proposed for evaluating the operational reliability of marine diesel engines. In mathematical terms, the model is ... permits the estimation of the overall reliability of marine diesel engines

G. S. Gamidov; N. K. Sanaev; Z. I. Adeev

2009-05-01T23:59:59.000Z

312

The Estimation of the Marine Main Diesel Engine Energy Balance  

Science Journals Connector (OSTI)

The basis of impact of energy device (marine main diesel engine) on its environment in terms of energy ... . Types of energy and exergy characterizing the marine main diesel engine are presented. The description ...

Z. Matuszak; G. Nicewicz

2014-01-01T23:59:59.000Z

313

Effect of Exhaust Gas Recirculation (EGR) on Diesel Engine Oil...  

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

Exhaust Gas Recirculation (EGR) on Diesel Engine Oil - Impact on Wear Effect of Exhaust Gas Recirculation (EGR) on Diesel Engine Oil - Impact on Wear Results of completed study on...

314

Engines - Fuel Injection and Spray Research - Diesel Sprays  

NLE Websites -- All DOE Office Websites (Extended Search)

Diesel Sprays Diesel Sprays Chris Powell and fuel spray xray beamline Christopher Powell, an engine research scientist, fits a specially designed X-ray pressure window to a high-pressure chamber used in diesel spray research. These windows allow Argonne researchers to use X-rays to probe diesel sprays under the high-density conditions found in diesel engines. Diesel sprays Diesel engines are significantly more fuel-efficient than their gasoline counterparts, so wider adoption of diesels in the U.S. would decrease the nationÂ’s petroleum consumption. However, diesels emit much higher levels of pollutants, especially particulate matter and NOx (nitrogen oxides). These emissions have prevented more manufacturers from introducing diesel passenger cars. Researchers are exploring ways to reduce pollution formation in the engine

315

Emissions comparison between petroleum diesel and biodiesel in a medium-duty diesel engine  

E-Print Network (OSTI)

EMISSIONS COMPARISON BETWEEN PETROLEUM DIESEL AND BIODIESEL IN A MEDIUM-DUTY DIESEL ENGINE A Thesis by BRANDON T. TOMPKINS Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE December 2008 Major Subject: Mechanical Engineering EMISSIONS COMPARISON BETWEEN PETROLEUM DIESEL AND BIODIESEL IN A MEDIUM-DUTY DIESEL ENGINE A Thesis by BRANDON T...

Tompkins, Brandon T.

2009-05-15T23:59:59.000Z

316

Diesel Engine Waste Heat Recovery Utilizing Electric Turbocompound Technology  

SciTech Connect

Caterpillar's Technology & Solutions Division conceived, designed, built and tested an electric turbocompound system for an on-highway heavy-duty truck engine. The heart of the system is a unique turbochargerr with an electric motor/generator mounted on the shaft between turbine and compressor wheels. When the power produced by the turbocharger turbine exceeds the power of the compressor, the excess power is converted to electrical power by the generator on the turbo shaft; that power is then used to help turn the crankshaft via an electric motor mounted in the engine flywheel housing. The net result is an improvement in engine fuel economy. The electric turbocompound system provides added control flexibility because it is capable of varying the amount of power extracted from the exhaust gases, thus allowing for control of engine boost. The system configuration and design, turbocharger features, control system development, and test results are presented.

Hopman, Ulrich,; Kruiswyk, Richard W.

2005-07-05T23:59:59.000Z

317

Modeling Species Inhibition of NO oxidation in Urea-SCR Catalysts for Diesel Engine NOx Control  

SciTech Connect

Urea-selective catalytic reduction (SCR) catalysts are regarded as the leading NOx aftertreatment technology to meet the 2010 NOx emission standards for on-highway vehicles running on heavy-duty diesel engines. However, issues such as low NOx conversion at low temperature conditions still exist due to various factors, including incomplete urea thermolysis, inhibition of SCR reactions by hydrocarbons and H2O. We have observed a noticeable reduction in the standard SCR reaction efficiency at low temperature with increasing water content. We observed a similar effect when hydrocarbons are present in the stream. This effect is absent under fast SCR conditions where NO ~ NO2 in the feed gas. As a first step in understanding the effects of such inhibition on SCR reaction steps, kinetic models that predict the inhibition behavior of H2O and hydrocarbons on NO oxidation are presented in the paper. A one-dimensional SCR model was developed based on conservation of species equations and was coded as a C-language S-function and implemented in Matlab/Simulink environment. NO oxidation and NO2 dissociation kinetics were defined as a function of the respective adsorbate’s storage in the SCR catalyst. The corresponding kinetic models were then validated on temperature ramp tests that showed good match with the test data.

Devarakonda, Maruthi N.; Tonkyn, Russell G.; Tran, Diana N.; Lee, Jong H.; Herling, Darrell R.

2010-09-15T23:59:59.000Z

318

Modeling Species Inhibition of NO Oxidation in Urea-SCR Catalysts for Diesel Engine NOx Control  

SciTech Connect

Urea-selective catalytic reduction (SCR) catalysts are regarded as the leading NOx aftertreatment technology to meet the 2010 NOx emission standards for on-highway vehicles running on heavy-duty diesel engines. However, issues such as low NOx conversion at low temperature conditions still exist due to various factors, including incomplete urea thermolysis, inhibition of SCR reactions by hydrocarbons and H2O. We have observed a noticeable reduction in the standard SCR reaction efficiency at low temperature with increasing water content. We observed a similar effect when hydrocarbons are present in the stream. This effect is absent under fast SCR conditions where NO ~ NO2 in the feed gas. As a first step in understanding the effects of such inhibition on SCR reaction steps, kinetic models that predict the inhibition behavior of H2O and hydrocarbons on NO oxidation are presented in the paper. A one-dimensional SCR model was developed based on conservation of species equations and was coded as a C-language S-function and implemented in Matlab/Simulink environment. NO oxidation and NO2 dissociation kinetics were defined as a function of the respective adsorbate’s storage in the Fe-zeolite SCR catalyst. The corresponding kinetic models were then validated on temperature ramp tests that showed good match with the test data. Such inhibition models will improve the accuracy of model based control design for integrated DPF-SCR aftertreatment systems.

Devarakonda, Maruthi N.; Tonkyn, Russell G.; Tran, Diana N.; Lee, Jong H.; Herling, Darrell R.

2011-04-20T23:59:59.000Z

319

Fault Tolerant Oxygen Control of a Diesel Engine Air System  

E-Print Network (OSTI)

Fault Tolerant Oxygen Control of a Diesel Engine Air System Rainer Nitsche Matthias Bitzer control problem of a Diesel engine air system having a jammed Exhaust Gas Recirculation (EGR) valve of the air system. Keywords: Fault tolerant control, Diesel engine, Air system, Model-based trajectory

Paris-Sud XI, Université de

320

UNSUPERVISED CONDITION CHANGE DETECTION IN LARGE DIESEL ENGINES  

E-Print Network (OSTI)

diesel engines and stationary power plants. The possibility of early detecting small defects priorUNSUPERVISED CONDITION CHANGE DETECTION IN LARGE DIESEL ENGINES Niels Henrik Pontoppidan and Jan detection in large diesel engines from acoustical emis- sion sensor signal and compared to more classical

Note: This page contains sample records for the topic "heavy-duty diesel engines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Effects of Fuel Physical Properties on Diesel Engine Combustion Using Diesel and Bio-Diesel Fuels  

SciTech Connect

A computational study is performed to investigate the effects of physical property on diesel engine combustion characteristics using bio-diesel fuels. Properties of typical bio-diesel fuels that were either calculated or measured are used in the study and the simulation results are compared with those of conventional diesel fuels. Sensitivity of the computational results to individual physical properties is also investigated, and the results can provide information for desirable characteristics of the blended fuels. The properties considered in this study include liquid density, vapor pressure, surface tension, liquid viscosity, liquid thermal conductivity, liquid specific heat, latent heat, vapor specific heat, vapor diffusion coefficient, vapor viscosity and vapor thermal conductivity. The results show significant effects of the fuel physical properties on ignition delay and burning rates at various engine operating conditions. It is seen that there is no single physical property that dominates differences of ignition delay between diesel and bio-diesel fuels. However, among the 11 properties considered in the study, the simulation results were found to be most sensitive to the liquid fuel density, vapor pressure and surface tension through their effects on the mixture preparation processes.

Ra, Youngchul [ORNL; Reitz, Rolf [University of Wisconsin; McFarlane, Joanna [ORNL; Daw, C Stuart [ORNL

2007-01-01T23:59:59.000Z

322

Light-duty diesel engine development status and engine needs  

SciTech Connect

This report reviews, assesses, and summarizes the research and development status of diesel engine technology applicable to light-duty vehicles. In addition, it identifies specific basic and applied research and development needs in light-duty diesel technology and related health areas where initial or increased participation by the US Government would be desirable. The material presented in this report updates information provided in the first diesel engine status report prepared by the Aerospace Corporation for the Department of Energy in September, 1978.

Not Available

1980-08-01T23:59:59.000Z

323

Exploring Low Emission Lubricants for Diesel Engines  

SciTech Connect

A workshop to explore the technological issues involved with the removal of sulfur from lubricants and the development of low emission diesel engine oils was held in Scottsdale, Arizona, January 30 through February 1, 2000. It presented an overview of the current technology by means of panel discussions and technical presentations from industry, government, and academia.

Perez, J. M.

2000-07-06T23:59:59.000Z

324

Utilization of alternative fuels in diesel engines  

SciTech Connect

The important findings for a 41-month research grant entitled The Utilization of Alternate Fuels in Diesel Engines are summarized. The procedure followed was to collect performance and emission data for various candidate alternate fuels and compare these data to that for a certified petroleum-based number two Diesel fuel oil. The method of test-fuel introduction was either via fumigation or to use the engine stock injection system. Results for methanol, ethanol, four vegetable oils, two shale-derived oils, and two coal-derived oils are reported. Based upon this study, alcohol fumigation does not appear to be a practical method for utilizing low combustion quality fuels in a Diesel engine. The reasons being, the need for a complex fuel management system and a narrow operating range bounded by wet misfire on the low load end and by severe knock at medium to high loads. Also, it was misfire on the low load end and by severe knock at medium to high loads. Also, it was found that alcohol fumigation enhances the bioactivity of the emitted exhaust particles. Finally, this study showed that while it is possible to inject many synthetic fuels using the engine stock injection system, wholly acceptable performance is only obtained from a fuel whose specifications closely approach those of a finished petroleum-based Diesel oil.

Lestz, S.S.

1984-05-01T23:59:59.000Z

325

Off-Highway Heavy Vehicle Diesel Efficiency Improvement and Emissions...  

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

High Engine Efficiency at 2010 Emissions Integrated Engine and Aftertreatment Technology Roadmap for EPA 2010 Heavy-duty Emissions Regulations Optimization of...

326

Friction and Wear Reduction in Diesel Engine Valve Trains | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

More Documents & Publications Mechanisms of Oxidation-Enhanced Wear in Diesel Exhaust Valves Materials for Advanced Engine Valve Train Materials for Advanced Engine Valve Train...

327

Advanced Modeling of Direct-Injection Diesel Engines | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Engines 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005deerzellat.pdf More Documents & Publications Effects of Ambient Density and...

328

Diesel and Gasoline Engine Emissions: Characterization of Atmosphere...  

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

and Gasoline Engine Emissions: Characterization of Atmosphere Composition and Health Responses to Inhaled Emissions Diesel and Gasoline Engine Emissions: Characterization of...

329

Optimization of Engine-out Emissions from a Diesel Engine to...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Optimization of Engine-out Emissions from a Diesel Engine to Meet Tier 2 Bin 5 Emission Limits Optimization of Engine-out Emissions from a Diesel Engine to Meet Tier 2 Bin 5...

330

Eaton Aftertreatment System (EAS) for On-Highway Diesel Engines...  

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

and 21st Century Truck Programs. 2006deerhu.pdf More Documents & Publications LNT + SCR Aftertreatment for Medium-Heavy Duty Applications: A Systems Approach Improved System...

331

Medium and Heavy Duty Vehicle Field Evaluations (Presentation)  

SciTech Connect

This presentation discusses field evaluations of medium- and heavy-duty vehicles performed by NREL. The project provides medium-duty (MD) and heavy-duty (HD) test results, aggregated data, and detailed analysis, including 3rd party unbiased data (data that would not normally be shared by industry in an aggregated and detailed manner). Over 5.6 million miles of advanced technology MD and HD truck data have been collected, documented, and analyzed on over 240 different vehicles since 2002. Data, analysis, and reports are shared within DOE, national laboratory partners, and industry for R&D planning and strategy. The results help guide R&D for new technology development, help define intelligent usage of newly developed technology, and help fleets/users understand all aspects of advanced technology.

Walkowicz, K.

2014-06-01T23:59:59.000Z

332

Control of Variable Geometry Turbocharged Diesel Engines for Reduced Emissions  

E-Print Network (OSTI)

in a Diesel engine equipped with a variable geometry tur- bocharger (VGT) and an external exhaust gas INJECTION EXHAUST MANIFOLD EGR VALVE EGR COOLER AIR EXHAUST Figure 1: Schematic representation of the DieselControl of Variable Geometry Turbocharged Diesel Engines for Reduced Emissions A.G. Stefanopoulouz

Stefanopoulou, Anna

333

Improving Turbocharged Diesel Engine Operation with Turbo Power Assist System  

E-Print Network (OSTI)

Improving Turbocharged Diesel Engine Operation with Turbo Power Assist System I. Kolmanovsky A. G. In this pa- per we investigate the coupling of a power assist system at the turbocharger shaft of a diesel representation of a diesel engine with a turbocharger power assist system. A turbocharger power assist system

Stefanopoulou, Anna

334

Argonne TTRDC - Feature - Five Myths About Diesel Engines  

NLE Websites -- All DOE Office Websites (Extended Search)

Five Myths About Diesel Engines Five Myths About Diesel Engines by Louise Lerner Steve Ciatti Steve Ciatti in the Engine Research Facility Diesel engines, long confined to trucks and ships, are garnering more interest for their fuel efficiency and reduced carbon dioxide emissions relative to gasoline engines. Argonne mechanical engineer Steve Ciatti takes a crack at some of the more persistent myths surrounding the technology. Myth #1: Diesel is dirty. "We all have this image of trucks belching out dirty black smoke," Ciatti said. This smoke is particulate matter from diesel exhaust: soot and small amounts of other chemicals produced by the engine. But EPA emissions requirements have significantly tightened, and diesel engines now have to meet the same criteria as gasoline engines. They do

335

Cleaner, More Efficient Diesel Engines  

SciTech Connect

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.

Musculus, Mark

2013-08-13T23:59:59.000Z

336

Optimization of combustion performance and emission of Jatropha biodiesel in a turbocharged LHR diesel engine;.  

E-Print Network (OSTI)

??Bio-diesel derived from the vegetable oils are identified as an excellent alternate fuel for petroleum based diesel fuel used in diesel engines. However, the performance… (more)

Rajendra Prasath B

2013-01-01T23:59:59.000Z

337

Load Expansion with Diesel/Gasoline RCCI for Improved Engine Efficiency and Emissions  

Energy.gov (U.S. Department of Energy (DOE))

This poster will describe preliminary emission results of gasoline/diesel RCCI in a medium-duty diesel engine.

338

Correlations of Exhaust Emissions from a Diesel Engine with Diesel Fuel Properties  

Science Journals Connector (OSTI)

Department of Chemical Engineering, National Technical University of Athens, Iroon Polytechniou 9, Athens 157 80, Greece ... The amount of pollutants emitted from diesel engines is affected by both the engine and the fuel quality. ...

D. Karonis; E. Lois; S. Stournas; F. Zannikos

1998-02-14T23:59:59.000Z

339

Engines - Particulate Studies - Revealing the True Nature of Diesel  

NLE Websites -- All DOE Office Websites (Extended Search)

Engine Nanoparticle Research: Revealing the True Nature of Diesel Particulates Engine Nanoparticle Research: Revealing the True Nature of Diesel Particulates Thermophoretic sampling device Argonne's test engine with the thermophoretic sampling device attached. Nanostructure of graphitic diesel soot under high engine load A transmission electron microscope reveals the nanostructures of graphitic diesel soot sampled under high engine loads. Morphology of particles collected from diesel combustion with iso-paraffin-enriched fuel. Morphology of particles collected from diesel combution with iso-paraffin-enriched fuel. Amorphous soot particle collected from biodiesel combustion undera low-temperature condition. Amorphous soot particle collected from biodiesel combustion under low temperature conditions. Researchers have many ideas about how to reduce the soot produced by diesel

340

Effects of bio-diesel fuel blends on the performance and emissions of diesel engine.  

E-Print Network (OSTI)

??This study presents an experimental investigation into the effects of running biodiesel fuel blends on conventional diesel engines. Bio fuels provide a way to produce… (more)

Bastiani, Sergio.

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "heavy-duty diesel engines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Argonne TTRDC - Feature - Combining Gas and Diesel Engines  

NLE Websites -- All DOE Office Websites (Extended Search)

Combining Gas and Diesel Engines Could Yield the Best of Both Worlds Combining Gas and Diesel Engines Could Yield the Best of Both Worlds by Louise Lerner Steve Ciatti Steve Ciatti in the Engine Research Facility It may be hard to believe, but the beloved gasoline engine that powers more than 200 million cars across America every day didn't get its status because it's the most efficient engine. Diesel engines can be more than twice as efficient, but they spew soot and pollutants into the air. Could researchers at the U.S. Department of Energy's Argonne National Laboratory engineer a union between the two-combining the best of both? Steve Ciatti, a mechanical engineer at Argonne, is heading a team to explore the possibilities of a gasoline-diesel engine. The result, so far, is cleaner than a diesel engine and almost twice as efficient as a typical

342

Diesel Engines for Road Transport  

Science Journals Connector (OSTI)

... A REMARKABLE revolution is taking place in the type of engine used in large motor vehicles, and by some it is thought that for road ... motor vehicles, and by some it is thought that for road transport the highspeed oil engine is destined to supersede the long-favoured petrol ...

1933-10-21T23:59:59.000Z

343

E-Print Network 3.0 - adiabatic diesel engine Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

engine Search Powered by Explorit Topic List Advanced Search Sample search results for: adiabatic diesel engine...

344

E-Print Network 3.0 - automotive diesel engine Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

engine Search Powered by Explorit Topic List Advanced Search Sample search results for: automotive diesel engine...

345

E-Print Network 3.0 - advanced diesel engine Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

engine Search Powered by Explorit Topic List Advanced Search Sample search results for: advanced diesel engine...

346

Utiization of alternate fuels in diesel engines  

SciTech Connect

Accomplishments during three years entitled The Utilization of Alternate Fuels in Diesel Engines are summarized. Experiments were designed and test equipment set-up for the purpose of evaluating the use of methanol as a fumigant for light-duty Diesel engine service. The major experimental results were obtained from a multicylinder automotive Diesel engine. However, fundamental studies employing a GC/micro-reactor and a constant volume combustion bomb were also started. The purpose of this work was to measure some of the chemical and physical properties of methanol and methanol-air mixtures. The laminar flame velocity for various mixtures has been measured in the combustion bomb and thermal degradation studies have begun in the GC/micro-reactor. An Oldsmobile 5.7 liter V/8 Diesel engine was fumigated with methanol in amounts up to 40% of the fuel energy. The primary objectives of the study were to determine the effect of methanol fumigation on fuel efficiency, smoke, nitric oxide emission, and the occurrence of severe knock. An assessment of the biological activity for samples of the raw exhaust particulate and its soluble organic extract was also made using boh the Ames Salmonella typhimurium test and the B. subtilis Comptest. Generally, methanol fumigation was found to decrease NO emission for all conditions, to have a slight effect on smoke opacity, and to have a beneficial effect on fuel efficiency at higher loads. Also at higher loads, the methanol was found to induce what was defined as knock limited operation. The biological activity of the raw particulate matter was fond to be less than that of its soluble organic extract. However, for both the fumigation of methanol did enhance the biological activity.

Lestz, S.S.

1980-09-01T23:59:59.000Z

347

The effect of TDC temperature and density on the liquid-phase fuel penetration in a D.I. Diesel engine  

SciTech Connect

A parametric study of the liquid-phase fuel penetration of evaporating Diesel fuel jets has been conducted in a directinjection Diesel engine using laser elastic-scatter imaging. The experiments were conducted in an optically accessible Diesel engine of the ``heavy-duty`` size class at a representative medium speed (1200 rpm) operating condition. The density and temperature at TDC were varied systematically by adjusting the intake temperature and pressure. At all operating conditions the measurements show that initially the liquid fuel penetrates almost linearly with increasing crank angle until reaching a maximum length. Then, the liquid-fuel penetration length remains fairly constant although fuel injection continues. At a TDC density of 16.6 kg/m{sup 3} and a temperature of about 1000 K the maximum penetration length is approximately 23 mm. However, it varies significantly as TDC conditions are changed, with the liquid-length being less at higher temperatures and at higher densities. The corresponding apparent heat release rate plots are presented and the results of the liquid-phase fuel penetration are discussed with respect to the ignition delay and premixed bum fraction.

Espey, C. [Daimler-Benz AG, Stuttgart (Germany); Dec, J.E. [Sandia National Labs., Albuquerque, NM (United States)

1995-12-01T23:59:59.000Z

348

A WEAR MODEL FOR DIESEL ENGINE EXHAUST VALVES  

SciTech Connect

The work summarized here comprises the concluding effort of a multi-year project, funded by the U.S. Department of Energy, Office of Vehicle Technologies. It supports the development of a better understanding of advanced diesel engine designs in which enhanced power density, energy efficiency, and emissions control place increasing demands upon the durability of engine materials. Many kinds of metallic alloys are used in engines depending on the operating stresses, temperatures, and chemical environments. Exhaust valves, for example, are subjected to high temperatures and repetitive surface contacts that place demands on durability and frictional characteristics of the materials. Valves must continue to seal the combustion chamber properly for thousands of hours of cyclic engine operation and under varying operating conditions. It was the focus of this effort to understand the wear processes in the valve-seat area and to develop a model for the surface deformation and wear of that important interface. An annotated bibliography is provided to illustrate efforts to understand valve wear and to investigate the factors of engine operation that affect its severity and physical manifestation. The project for which this modeling effort was the final task, involved construction of a high-temperature repetitive impact test system as well as basic tribology studies of the combined processes of mechanical wear plus oxidation at elevated temperatures. Several publications resulted from this work, and are cited in this report. The materials selected for the experimental work were high-performance alloys based on nickel and cobalt. In some cases, engine-tested exhaust valves were made available for wear analysis and to ensure that the modes of surface damage produced in experiments were simulative of service. New, production-grade exhaust valves were also used to prepare test specimens for experimental work along with the other alloy samples. Wear analysis of valves and seats run for hundreds of hours in heavy-duty diesels provided insights into the kinds of complexity that the contact conditions in engines can produce, and suggested the physical basis for the current approach to modeling. The model presented here involves four terms, two representing the valve response and two for its mating seat material. The model's structure assumes that wear that takes place under a complex combination of plastic deformation, tangential shear, and oxidation. Tribolayers form, are removed, and may reform. Layer formation affects the friction forces in the interface, and in turn, the energy available to do work on the materials to cause wear. To provide friction data for the model at various temperatures, sliding contact experiments were conducted from 22 to 850 C in a pin-on-disk apparatus at ORNL. In order to account for the behavior of different materials and engine designs, parameters in all four terms of the model can be adjusted to account for wear-in and incubation periods before the dominant wear processes evolve to their steady-state rates. For example, the deformation rate is assumed to be maximum during the early stages of operation, and then, due to material work-hardening and the increase in nominal contact area (which reduces the load per unit area), decreases to a lower rate at long times. Conversely, the rate of abrasion increases with time or number of cycles due to the build-up of oxides and tribo-layers between contact surfaces. The competition between deformation and abrasion results in complex, non-linear behavior of material loss per cycle of operation. Furthermore, these factors are affected by valve design features, such as the angle of incline of the valve seat. Several modeling scenarios are presented to demonstrate how the wear profile versus number of cycles changes in response to: (a) different relative abrasion rates of the seat and valve materials, (b) the friction coefficient as a function of temperature, (c) the relative deformation contribution of valve and seat materials, and (d) an interruption in the dominant we

Blau, Peter Julian [ORNL

2009-11-01T23:59:59.000Z

349

Technologies for a Sustainable Heavy-Duty On-Road Fleet  

Energy.gov (U.S. Department of Energy (DOE))

Only selected energy pathways for the heavy-duty on-road fleet are consistent with the joint objectives of reducing petroleum dependence and mitigating climate change

350

Control Oriented Dynamic Modeling of a Turbocharged Diesel Engine  

Science Journals Connector (OSTI)

To build a precise model is a key issue in fulfilling on optimal control of the turbocharged diesel engine. Meanvalue model has been extensively used for engine control, but neglects the scavenging efficiency. On the basis of carefully considering air-fuel ... Keywords: Diesel engine, mean-value model, AFR

Haiyan Wang; Jundong Zhang

2006-10-01T23:59:59.000Z

351

Effect of Ethanol on Blending Stability and Diesel Engine Emissions  

Science Journals Connector (OSTI)

Effect of Ethanol on Blending Stability and Diesel Engine Emissions ... Industrial & Engineering Chemistry Research2013 52 (44), 15504-15508 ... This article describes the effects of hydroxylated biodiesel (castor oil methyl ester – COME) on the properties, combustion, and emissions of butanol–diesel blends used within compression ignition engines. ...

Magín Lapuerta; Octavio Armas; Reyes García-Contreras

2009-07-28T23:59:59.000Z

352

Attaining Tier 2 Emissions Through Diesel Engine and Aftertreatment...  

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

Integration - Strategy and Experimental Results The feasibility of diesel engines to meet the stringent emissions regulations of 2007 and beyond is an important...

353

Estimation and Control of Diesel Engine Processes Utilizing Variable...  

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

diesel engine with cooled EGR and flexible intake valve actuation developed to capture dynamic effects of gas exchange actuators deer12kocher.pdf More Documents &...

354

Materials-Enabled High-Efficiency Diesel Engines (CRADA with...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Example of exhaust availability for a Light-duty diesel Example 2 nd Law Distribution 10% Heat Loss (engine block, head, intercooler, etc) 14% Availability Exhaust Flow 36%...

355

Technology Development for Light Duty High Efficient Diesel Engines...  

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

optimization. deer09stanton.pdf More Documents & Publications Light Duty Efficient Clean Combustion Advanced Diesel Engine Technology Development for HECC Effects of Biomass Fuels...

356

A Correlation of Diesel Engine Performance with Measured NIR...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

CORRELATION OF DIESEL ENGINE PERFORMANCE WITH MEASURED NIR FUEL CHARACTERISTICS Bruce Bunting, Michael Bunce, ORNL Alain Lunati, Oswin Galtier, Eric Hermitte, SP3H Monday, P-02...

357

Emission Performance of Modern Diesel Engines Fueled with Biodiesel  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Emission Performance of Modern Diesel Engines Fueled with Biodiesel Aaron Williams, Jonathan Burton, Xin He and Robert L. McCormick National Renewable Energy Laboratory October 5,...

358

3M heavy duty roto peen: Baseline report; Summary  

SciTech Connect

The roto peen scaler allows for the selective removal of concrete substrates. The peen is a tungsten carbide shot brazed to a hardened steel rivet that is supported by a heavy duty flexible flap. The peens are coupled with a commercially available piece of equipment that is used to scabble or remove the concrete. The scabbled debris is then collected into 55 gallon drums by means of a vacuum system. The safety and health evaluation during the human factors assessment focused on two main areas: noise and dust.

NONE

1997-07-31T23:59:59.000Z

359

DOE/VTP Light-Duty Diesel Engine Commercialization  

NLE Websites -- All DOE Office Websites (Extended Search)

VTP Light-Duty Diesel Engine Commercialization VTP Light-Duty Diesel Engine Commercialization Vehicle Technologies Program (VTP) spearheaded the development of clean diesel engine technologies for passenger vehicles in the 1990s, spurring the current reintroduction of highly efficient diesel vehicles into the passenger market. Cummins partnered with VTP to develop a diesel engine that meets the 50-state 2010 emissions standards while boosting vehicle fuel economy by 30% over comparable gasoline-powered vehicles. The Cummins engine is scheduled to debut in 2010 Chrysler sport utility vehicles and pickup trucks. VTP-sponsored research demonstrated the ability of diesel passenger vehicles with advanced aftertreatment to meet EPA's stringent Tier II Bin 5 standards, representing an 83% reduction in NOx and more than 87% reduction in

360

Analytical Framework to Evaluate Emission Control Systems for Marine Engines  

E-Print Network (OSTI)

T. H. , Hybrid Diesel-Electric Heavy Duty Bus Emissions:use emission benefits of a diesel-electric hybrid tug wereof a multi- powered diesel-electric hybrid system. viii

Jayaram, Varalakshmi

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "heavy-duty diesel engines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Prime Movers of Globalization: The History and Impact of Diesel Engines and Gas Turbines  

E-Print Network (OSTI)

and Impact of Diesel Engines and Gas Turbines By Vaclav Smiland Impact of Diesel Engines and Gas Turbines. Cambridge,of the internal combustion engine invented by Rudolf Diesel

Anderson, Byron P.

2011-01-01T23:59:59.000Z

362

Knocking detection device in diesel engines  

SciTech Connect

This patent describes a device for detection of knocking in a diesel engine which consists of: a pressure detector, having a piezoelectric element, for detecting the rate of change of combustion pressure of the engine; an angle detector for detecting the rotation of the engine; and a knocking detector for receiving the outputs of the pressure detector and the angle detector for deciding whether or not knocking occurs. The knocking detector consists of a rotation rate detector for converting the output of the angle detector to a signal corresponding to the rotation rate of the engine, and a division apparatus for dividing the output of the pressure detector by the output of the rotation rate detector, the decision of an occurrence of knocking occurring when the output of the division device exceeds a predetermined value.

Ootsuka, Y.; Hattori, T.; Ozaki, T.

1986-02-04T23:59:59.000Z

363

Evaluation of oxides of nitrogen emissions for the purpose of their transient regulation from a direct injection diesel engine  

Science Journals Connector (OSTI)

The concept of defining a regulatory standard for the maximum allowable emissions of oxides of nitrogen (NOx) from a heavy-duty diesel engine on an instantaneous basis is presented. The significance of this concept from a regulatory point of view is the possibility to realise a steady brake specific NOx emissions result independent of the test schedule used. The emissions of oxides of nitrogen from a state-of-the-art direct injection diesel engine have been examined on an integral as well as on an instantaneous basis over the Federal Test Procedure as well as over several other arbitrary transient cycles generated for this study. Three candidate standards of specific NOx emissions have been evaluated on a real-time, continuous basis. These include brake power specific, fuel mass specific, and carbon dioxide mass specific NOx emissions. Retaining the stock engine control module, the carbon dioxide specific emissions of NOx have been shown to be the most uniform, varying only by about 30% of its mean value regardless of the test schedule or engine operation. The instantaneous fuel specific NOx emissions are shown to be relatively less invariant and the least steady are the brake power specific emissions with a coefficient of variation of up to 200%. Advancing injection timing has been shown to have a wide range of authority over the specific emissions of oxides of nitrogen regardless of the units used, when operating at full load in the vicinity of peak torque speeds. The carbon dioxide specific NOx emissions have shown a linear dependence on the power specific emissions, independent of the examined operating conditions. The trade-off between better brake thermal efficiency, lower exhaust gas temperature at advanced timing and lower NOx emissions has also been shown to be independent of the units of the specific standard used.

Yasser Yacoub; Chris Atkinson

2001-01-01T23:59:59.000Z

364

Effect of engine operating parameters and fuel characteristics on diesel engine emissions  

E-Print Network (OSTI)

To examine the effects of using synthetic Fischer-Tropsch (FT) diesel fuel in a modern compression ignition engine, experiments were conducted on a MY 2002 Cummins 5.9 L diesel engine outfitted with high pressure, common ...

Acar, Joseph, 1977-

2005-01-01T23:59:59.000Z

365

Experimental Study of Diesel Fuel Effects on Direct Injection (DI) Diesel Engine Performance and Pollutant Emissions  

Science Journals Connector (OSTI)

Experimental Study of Diesel Fuel Effects on Direct Injection (DI) Diesel Engine Performance and Pollutant Emissions ... The test fuels indicate variable hydrocarbon composition and physical and chemical properties, and they were prepared under a European Union research program aiming to identify future fuel formulations for use in modern DI diesel engines. ... 1,2,4-9,13,14,16,17,24-26 In general, there is an interrelation between the molecular structure (paraffins, olefins, napthenes, and aromatic hydrocarbons), the chemical properties (cetane number, ignition point, etc.), and the physical properties (density, viscosity, surface tension, etc.) of the diesel fuel. ...

Theodoros C. Zannis; Dimitrios T. Hountalas; Roussos G. Papagiannakis

2007-07-19T23:59:59.000Z

366

Fuzzy control of a turbocharged diesel engine  

Science Journals Connector (OSTI)

In this paper an innovative fuzzy controller is proposed to regulate the intake manifold pressure and the fresh mass airflow of diesel engines simultaneously. Unlike many multivariable controllers published in the literature, it requires neither an internal model nor identification algorithms. It has been designed considering the instrumentation set usually embedded in a mass-produced passenger car. Its rule-based structure has led to an algorithm, which is easy to implement. In comparison to controllers embedded at present in standard Engine Control Units (ECUs), it improves the trajectory tracking of desired outputs as noted during simulation of EURO cycles. In terms of robustness, this controller is little sensitive to the parameter disparity generally encountered in mass-produced engines.

Jean-Francois Arnold; Nicolas Langlois; Houcine Chafouk; Gerard Tremouliere

2008-01-01T23:59:59.000Z

367

Heavy-Duty Low-Temperature and Diesel Combustion Research (8748) and Heavy-Duty Combustion Modeling (12349)  

Energy.gov (U.S. Department of Energy (DOE))

Presentation from the U.S. DOE Office of Vehicle Technologies "Mega" Merit Review 2008 on February 25, 2008 in Bethesda, Maryland.

368

The new V8 diesel engine for Land Rover  

Science Journals Connector (OSTI)

After the launch of the 2.7-l TDV6 diesel engine for Jaguar, Land Rover and PSA ... family. The new 3.6-l TDV8 Diesel engine was developed for Land Rover’s ... and Range Rover Sport models. The premium market seg...

Roland Ernst; Thomas Grünert; Paul Turner

2007-04-01T23:59:59.000Z

369

Numerical simulation of turbulent jet primary breakup in Diesel engines  

E-Print Network (OSTI)

Numerical simulation of turbulent jet primary breakup in Diesel engines Peng Zeng1 Marcus Herrmann and Aerospace Engineering Arizona State University "Micro-Macro Modelling and Simulation of Liquid-Vapour Flows" IRMA Strasbourg, 23.Jan.2008 #12;Introduction DNS of Primary Breakup in Diesel Injection Phase

Helluy, Philippe

370

Air management in a diesel engine using fuzzy control techniques  

Science Journals Connector (OSTI)

Air management for diesel engines is a major challenge from the control point of view because of the highly nonlinear behavior of this system. For this reason, linear control techniques are unable to provide the required performance, and nonlinear controllers ... Keywords: Diesel engines, Fuzzy systems, Identification, LMIs, Nonlinear control

S. García-Nieto; J. Salcedo; M. Martínez; D. Laurí

2009-09-01T23:59:59.000Z

371

Capturing the Effect of Sulphur in Diesel Exhaust  

Science Journals Connector (OSTI)

A set of actual dynamometer measurements of a heavy-duty diesel vehicle with different lubricant oils and fuels is reproduced using Tampere University of Technology Exhaust Aerosol Model (TUTEAM), and the AEROFOR...

M. Lemmetty; L. Pirjola; E. Vouitsis; J. Keskinen

2007-01-01T23:59:59.000Z

372

New Two-Stroke Marine Diesel Engines from Wärtsilä  

Science Journals Connector (OSTI)

Wärtsilä has developed a new generation of small marine diesel engines with the designations RT-flex35 and RT- ... of 35 cm and 40 cm. The engines are equipped exclusively with an integrated electronic ... first ...

Dipl.-Ing. Patrick Frigge; Dipl.-Ing. Samuel Affolter…

2011-11-01T23:59:59.000Z

373

Advanced Electric Systems and Aerodynamics for Efficiency Improvements in Heavy Duty Trucks  

SciTech Connect

The Advanced Electric Systems and Aerodynamics for Efficiency Improvements in Heavy Duty Trucks program (DE-FC26-04NT42189), commonly referred to as the AES program, focused on areas that will primarily benefit fuel economy and improve heat rejection while driving over the road. The AES program objectives were to: (1) Analyze, design, build, and test a cooling system that provided a minimum of 10 percent greater heat rejection in the same frontal area with no increase in parasitic fan load. (2) Realize fuel savings with advanced power management and acceleration assist by utilizing an integrated starter/generator (ISG) and energy storage devices. (3) Quantify the effect of aerodynamic drag due to the frontal shape mandated by the area required for the cooling system. The program effort consisted of modeling and designing components for optimum fuel efficiency, completing fabrication of necessary components, integrating these components into the chassis test bed, completing controls programming, and performance testing the system both on a chassis dynamometer and on the road. Emission control measures for heavy-duty engines have resulted in increased engine heat loads, thus introducing added parasitic engine cooling loads. Truck electrification, in the form of thermal management, offers technological solutions to mitigate or even neutralize the effects of this trend. Thermal control offers opportunities to avoid increases in cooling system frontal area and forestall reduced fuel economy brought about by additional aerodynamic vehicle drag. This project explored such thermal concepts by installing a 2007 engine that is compliant with current regulations and bears additional heat rejection associated with meeting these regulations. This newer engine replaced the 2002 engine from a previous project that generated less heat rejection. Advanced power management, utilizing a continuously optimized and controlled power flow between electric components, can offer additional fuel economy benefits to the heavy-duty trucking industry. Control software for power management brings added value to the power distribution and energy storage architecture on board a truck with electric accessories and an ISG. The research team has built upon a previous truck electrification project, formally, 'Parasitic Energy Loss Reduction and Enabling Technologies for Class 7/8 Trucks', DE-FC04-2000AL6701, where the fundamental concept of electrically-driven accessories replacing belt/gear-driven accessories was demonstrated on a Kenworth T2000 truck chassis. The electrical accessories, shown in Figure 1, were controlled to provide 'flow on demand' variable-speed operation and reduced parasitic engine loads for increased fuel economy. These accessories also provided solutions for main engine idle reduction in long haul trucks. The components and systems of the current project have been integrated into the same Kenworth T2000 truck platform. Reducing parasitic engine loading by decoupling accessory loads from the engine and driving them electrically has been a central concept of this project. Belt or gear-driven engine accessories, such as water pump, air conditioning compressor, or air compressor, are necessarily tied to the engine speed dictated by the current vehicle operating conditions. These conventional accessory pumps are sized to provide adequate flow or pressure at low idle or peak torque speeds, resulting in excess flow or pressure at cruising or rated speeds. The excess flow is diverted through a pressure-minimizing device such as a relief valve thereby expending energy to drive unnecessary and inefficient pump operation. This inefficiency causes an increased parasitic load to the engine, which leads to a loss of usable output power and decreased fuel economy. Controlling variable-speed electric motors to provide only the required flow or pressure of a particular accessory system can yield significant increases in fuel economy for a commercial vehicle. Motor loads at relatively high power levels (1-5 kW, or higher) can be efficiently provided

Larry Slone; Jeffrey Birkel

2007-10-31T23:59:59.000Z

374

4 - Fundamentals of dynamic and static diesel engine system designs  

Science Journals Connector (OSTI)

Abstract: This chapter lays out the foundation of dynamic and static diesel engine system designs by linking the theoretical governing equations of the instantaneous engine in-cylinder cycle processes and the gas flow network of the air system. Engine manifold filling dynamics is discussed for dynamic system design. The chapter develops the theory of pumping loss and engine delta P, which are key design issues for modern high-EGR turbocharged diesel engines. The theory is used to predict engine hardware performance or determine hardware specifications to meet target performance. Four core equations for engine air system are proposed. Different theoretical options of engine air system design are summarized.

Qianfan Xin

2013-01-01T23:59:59.000Z

375

Combined Numerical-experimental Study of Dual Fuel Diesel Engine  

Science Journals Connector (OSTI)

Abstract In the present paper the authors discuss the effect of different fuel ratios on the performance and emission levels of a common rail diesel engine supplied with natural gas and diesel oil. Dual fuel operation is characterized by a diesel pilot injection to start combustion in an intake port premixed NG/air mixture. The combined numerical – experimental study of the dual fuel diesel engine that is carried out in this paper aims at the evaluation of the CFD potential to predict the main features of this particular engine operation. The experimental investigations represent a tool for validating such a potential and for highlighting, at the same time, the major problems that arise from the actual engine operation with different NG / diesel oil fuel ratios.

Carmelina Abagnale; Maria Cristina Cameretti; Luigi De Simio; Michele Gambino; Sabatino Iannaccone; Raffaele Tuccillo

2014-01-01T23:59:59.000Z

376

Effect of Bioethanol Blended Diesel Fuel and Engine Load on Spray, Combustion, and Emissions Characteristics in a Compression Ignition Engine  

Science Journals Connector (OSTI)

Yan et al.(8) investigated the combustion and emission characteristics of diesel engines fueled with ethanol–diesel blended fuel in a single cylinder diesel engine. ... Figure 11 shows the indicated specific fuel consumption (ISFC) characteristics of diesel–bioethanol blended fuels at various engine loads. ... Tests on the engine fuelled with diesel only were made, and the performance evaluated to form a basis for comparison for those of ethanol-diesel dual fuelling. ...

Su Han Park; In Mo Youn; Yunsung Lim; Chang Sik Lee

2012-07-03T23:59:59.000Z

377

Feature - Air Force Fellows helping work toward smarter diesel engines  

NLE Websites -- All DOE Office Websites (Extended Search)

Air Force Fellows helping work toward smarter diesel engines Air Force Fellows helping work toward smarter diesel engines Air Force Fellows Clint Abell (left) and Jeff Gillen work on Smarter Diesel Engine (SDE) 21. The project involves using ion sensors to help the engine run at maximum efficiency. Air Force Fellows Clint Abell (left) and Jeff Gillen work on Smarter Diesel Engine (SDE) 21. The project involves using ion sensors to help the engine run at maximum efficiency. (Photo by Wes Agresta) One of the three core values of the Air Force is "excellence in all we do." So it should be no surprise that there are currently two Air Force officers here at Argonne studying ways to improve the efficiency of military vehicles. Lieutenant Colonel Jeff Gillen and Major Clint Abell are the fourth set of Air Force Fellows to spend time at Argonne, but the first to be stationed

378

Combustion of the alternative marine diesel fuel LCO in large diesel engines  

Science Journals Connector (OSTI)

Large diesel engines represent the heart of the ships, which transport worldwide about 80 % of the goods over the sea route these days. Regimentations of the IMO are planning drastic reductions of nitrogen oxi...

Dipl.-Ing. Daniel Struckmeier; Prof. Dr.-Ing. Koji Takasaki…

2008-11-01T23:59:59.000Z

379

Diesel Engines: What Role Can They Play in an Emissions-Constrained World?  

Energy.gov (U.S. Department of Energy (DOE))

2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation; California Air Resources Board

380

An Innovative Pressure Sensor Glow Plug Offers Improved Diesel Engine Closed-loop Control  

Energy.gov (U.S. Department of Energy (DOE))

Describes glow plug with integrated pressure sensor for closed-loop control of diesel engine combustion

Note: This page contains sample records for the topic "heavy-duty diesel engines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

The Diesel Engine Powering Light-Duty Vehicles: Today and Tomorrow  

Energy.gov (U.S. Department of Energy (DOE))

2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Volkwagen AG, Wolfsburg, Germany

382

Performance and Emission Characteristics of Diesel Engines Fueled with Diesel?Dimethoxymethane (DMM) Blends  

Science Journals Connector (OSTI)

Although application of high-pressure injection and common rail system can reduce both NOx and PM emissions, the expense is also very high and unaffordable for many engine producers and consumers, especially for diesel engines widely applied for agricultural machinery, most of which are single-cylinder and of low price. ... Fleisch et al.,(2) Kapus and Ofner,(3) and Sorenson and Mikkelsen(4) have studied DME in a modified diesel engine, and their results showed that the engine could meet ultra-low emission levels without a fundamental change in the combustion systems. ... Heywood, J. B. Internal Combustion Engine Fundamentals; McGraw-Hill: New York, 1988. ...

Ruijun Zhu; Xibin Wang; Haiyan Miao; Zuohua Huang; Jing Gao; Deming Jiang

2008-11-14T23:59:59.000Z

383

Structure and Oxidation Activity Correlations for Carbon Blacks and Diesel Soot  

Science Journals Connector (OSTI)

This work focuses on a comprehensive investigation of structure–activity relationships for a diesel engine soot sample (Corning) and 10 commercially available carbon black samples. ... Su and colleagues used high-resolution transmission electron microscopy (HRTEM) and thermogravimetric analysis (TGA) to study the relation between the microstructure and oxidation behavior of soot from exhausts of different heavy-duty diesel engines and discovered the microstructure-controlled oxidation behavior of diesel soot. ... FE-SEM images (see Figure S1 of the Supporting Information) of some carbon blacks (Monarch 1400, Monarch 280, and Printex-U) and diesel soot-1 show the agglomerates, which are composed of their fundamental units called primary particles. ...

Lakshitha Pahalagedara; Hom Sharma; Chung-Hao Kuo; Saminda Dharmarathna; Ameya Joshi; Steven L. Suib; Ashish B. Mhadeshwar

2012-10-11T23:59:59.000Z

384

Diesel Engine Combustion of Biomass Pyrolysis Oils  

Science Journals Connector (OSTI)

Biomass pyrolysis oils are manufactured through a moderate-temperature process (?500 °C) in which the biomass feedstock is subjected to rapid heating in the absence of air, where it vaporizes, cracks, and is condensed after a short residence time (?500 ms) into a dark brown liquid composed of a complex mixture of oxygenated hydrocarbons whose heating value is approximately half that of No. 2 diesel fuel. ... The combustion air inlet temperature can be preheated up to 130 °C through the use of an in-line electric heater, which allows engine operation with fuels that have long ignition delay, without relying on any ignition additives. ... Their data showed that in addition to reducing the peak heat release magnitude, slower chemical kinetics resulted in reduced rate of instantaneous heat release (the slope of the instantaneous heat release curve) in the early combustion phase, resulting in delayed peak heat release timing relative to SOC. ...

Alan Shihadeh; Simone Hochgreb

2000-02-15T23:59:59.000Z

385

Overview of Engine Combustion Research at Sandia National Laboratories  

SciTech Connect

The objectives of this paper are to describe the ongoing projects in diesel engine combustion research at Sandia National Laboratories' Combustion Research Facility and to detail recent experimental results. The approach we are employing is to assemble experimental hardware that mimic realistic engine geometries while enabling optical access. For example, we are using multi-cylinder engine heads or one-cylinder versions of production heads mated to one-cylinder engine blocks. Optical access is then obtained through a periscope in an exhaust valve, quartz windows in the piston crown, windows in spacer plates just below the head, or quartz cylinder liners. We have three diesel engine experiments supported by the Department of Energy, Office of Heavy Vehicle Technologies: a one-cylinder version of a Cummins heavy-duty engine, a diesel simulation facility, and a one-cylinder Caterpillar engine to evaluate combustion of alternative diesel fuels.

Robert W. Carling; Gurpreet Singh

1999-04-26T23:59:59.000Z

386

Performance and emissions of a dual fuel operated diesel engine  

Science Journals Connector (OSTI)

Vegetable oil and its esters (biodiesel) are the renewable alternative fuels that can be used as a substitute for diesel in the diesel engines. The vegetable oil fuelled diesel engine results in lower efficiency and higher smoke emission. Hence in this work, an attempt has been made to use inedible and under utilised mahua oil (MO) as a substitute for diesel by fumigating liquefied petroleum gas (LPG) along with the air. A single cylinder diesel engine was modified to work in dual fuel mode by suitable retrofitting. The MO was injected into the cylinder using a fuel pump and LPG was fumigated along with the air. In MO + LPG dual fuel mode, 9% increase in brake thermal efficiency and 35% reduction in smoke emission of the engine were observed as compared to the sole fuel mode with MO. Also, the engine performance characteristics in MO + LPG dual fuel mode are close to sole fuel mode with diesel. From this work, it is concluded that LPG can be fumigated along with the air to increase the performance of MO fuelled agricultural diesel engine.

N. Kapilan; R.P. Reddy

2012-01-01T23:59:59.000Z

387

1 - The analytical design process and diesel engine system design  

Science Journals Connector (OSTI)

Abstract: Diesel engine system design (DESD) is an important and leading function in the design and development of modern low-emissions EGR diesel engines. It creates a paradigm shift in how engine design is carried out. It leads and integrates the designs from the system level to the component level by producing high-quality system design specifications with advanced analytical simulation tools. This chapter introduces the fundamental concepts in diesel engine system design and provides an overview on the theory and approaches in this emerging technical field. The central theme is how to design a good engine system performance specification at an early stage of the product development cycle. The chapter employs a systems engineering approach and applies the concepts of reliability and robust engineering to diesel engine system design to address the optimization topics encountered in design for target, design for variability, and design for reliability. An attribute-driven system design process is developed for advanced analytical engine design from the system level to the subsystem/component level in order to coordinate different design attributes and subsystems. Four system design attributes – performance, durability, packaging, and cost – are elaborated. The chapter also addresses competitive benchmarking analysis. By focusing on engine performance and system integration (EPSI), the technical areas, theoretical foundation, and tools in diesel engine system design are introduced.

Qianfan Xin

2013-01-01T23:59:59.000Z

388

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

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Technology Light Duty Diesel Aftertreatment System Passive Catalytic Approach to Low Temperature NOx Emission Abatement ATP-LD; Cummins Next Generation Tier 2 Bin 2 Diesel Engine...

389

Combustion and emission characteristics of a turbo-charged common rail diesel engine fuelled with diesel-biodiesel-DEE blends  

Science Journals Connector (OSTI)

The combustion and emission characteristics of a turbo-charged, common rail diesel engine fuelled with diesel-biodiesel-DEE blends were investigated. The study reports that the brake-specific fuel consumption of ...

Ni Zhang; Zuohua Huang; Xiangang Wang; Bin Zheng

2011-03-01T23:59:59.000Z

390

Diesel Engine Strategy & North American Market Challenges, Technology and Growth  

Energy.gov (U.S. Department of Energy (DOE))

Presentation given at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

391

Friction Characteristics of Steel Pistons for Diesel Engines  

E-Print Network (OSTI)

The use of iron pistons is increasing due to the higher power requirements of diesel truck engines. Expansion of the iron piston is a common concern. The purpose of this study is to clarify the lubrication conditions of ...

Kim, Dallwoo

392

Improving supply chain responsiveness for diesel engine remanufacturing  

E-Print Network (OSTI)

Achieving a significant reduction in order-to-shipment lead-time of remanufactured diesel engines can dramatically decrease the amount of finished goods inventory that Caterpillar needs to carry in order to meet its delivery ...

Méndez de la Luz, Diego A., 1979-

2011-01-01T23:59:59.000Z

393

Biodiesel Impact on Engine Lubricant Oil Dilution | Department...  

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

Impact on Engine Lubricant Oil Dilution Biodiesel Impact on Engine Lubricant Oil Dilution Heavy-duty engine and light-duty vehicle experiments were conducted to investigate the...

394

Reducing Emissions of Persistent Organic Pollutants from a Diesel Engine by Fueling with Water-Containing Butanol Diesel Blends  

Science Journals Connector (OSTI)

An increasing energy demand and environmental pollution has motivated a search for bio-fuels, such as bio-diesels(1, 2) and bio-alcohols,(3, 4) that can be used as alternative fuels for diesel engines. ... In general, both bio-diesel and bio-alcohols, such as ethanol and butanol, have the advantages of higher brake thermal efficiency (BTE) and lower emissions of particulate matter (PM), carbon monoxide (CO) and hydrocarbons (HC). ... Diesel Engine and Test Cycle ...

Yu-Cheng Chang; Wen-Jhy Lee; Hsi-Hsien Yang; Lin-Chi Wang; Jau-Huai Lu; Ying I. Tsai; Man-Ting Cheng; Li-Hao Young; Chia-Jui Chiang

2014-04-16T23:59:59.000Z

395

Emissions Benefits From Renewable Fuels and Other Alternatives for Heavy-Duty Vehicles  

E-Print Network (OSTI)

43 McCormick, 2005 (Canola-1) McCormick,2005 (Soy-1)A: Animal-based; C: Canola; S: Soy-based; H-D: Heavy-Duty H-

Hajbabaei, Maryam

2013-01-01T23:59:59.000Z

396

Vehicle Technologies Office Merit Review 2014: Heavy Duty Roots Expander Heat Energy Recovery (HD-REHER)  

Energy.gov (U.S. Department of Energy (DOE))

Presentation given by Eaton Corporation at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about heavy duty roots expander...

397

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine...  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

ElDorado National - XHF Application: Bus - Transit Fuel Types: CNG, LNG Maximum Seating: 39 Power Source(s): Cummins Westport - ISL G 8.9L...

398

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine...  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

- W900S Freightliner - Cascadia 113 NG Kenworth - T660 Tractor Kenworth - T800 Short Hood Volvo - VNL Daycab Cummins Westport - ISX12 G Fuel Types: CNG, LNG Displacement: 11.9...

399

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine...  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Volvo - VNL Daycab Application: Tractor Fuel Types: CNG, LNG Power Source(s): Cummins Westport - ISX12 G Volvo - D12-LNG...

400

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine...  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

CrosswindEaglePelican Applications: Street sweeper, Vocational truck Fuel Types: CNG, LNG, Propane Power Source(s): Cummins Westport - ISL G 8.9L Ford Motor Co. - 2.5L Propane...

Note: This page contains sample records for the topic "heavy-duty diesel engines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine...  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Kenworth - W900S Application: Vocational truck Fuel Types: CNG, LNG Power Source(s): Cummins Westport - ISX12 G...

402

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine...  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Peterbilt Motors - 384 Application: Tractor Fuel Types: CNG, LNG Maximum Seating: 2 Power Source(s): Cummins Westport - ISL G 8.9L...

403

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine...  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

20 G Application: Refuse hauler Fuel Types: CNG, LNG Power Source(s): Cummins Westport - ISL G 8.9L...

404

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine...  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

114SD Application: Vocational truck Fuel Types: CNG, LNG Power Source(s): Cummins Westport - ISL G 8.9L Cummins Westport - ISX12 G...

405

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine...  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

T800 Short Hood Application: Tractor Fuel Types: CNG, LNG Power Source(s): Cummins Westport - ISX12 G Additional Description: Can be configured to accomplish a variety of...

406

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine...  

NLE Websites -- All DOE Office Websites (Extended Search)

Cargotec - Ottawa 4x2 Application: Tractor Fuel Types: CNG, LNG Power Source(s): Cummins Westport - ISL G 8.9L...

407

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine...  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Freightliner - Cascadia 113 NG Application: Tractor Fuel Types: CNG, LNG Power Source(s): Cummins Westport - ISX12 G...

408

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine...  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Freightliner - Business Class M2 112 Applications: Tractor, Vocational truck Fuel Types: CNG, LNG Power Source(s): Cummins Westport - ISL G 8.9L...

409

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine...  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Motor Corp. - Tyrano Application: Tractor Fuel Type: Hydrogen Power Source(s): Vision Motor Corp. - 65kW Hydrogen Fuel Cell Hybrid System(s): Eaton - Hybrid Drive System...

410

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine...  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

- 60BRT North American Bus Industries - 31LFW 35LFW 40LFW ElDorado National - Axess Motor Coach Industries - D4500 CT Hybrid Commuter Coach Peterbilt Motors - 320 HLA Gillig...

411

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine...  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Electric Vehicles International - EVI-MD Electric Vehicles International - 260-hp AC permanent magnet motor with...

412

Medium and Heavy Duty Vehicle and Engine Testing  

Energy.gov (U.S. Department of Energy (DOE))

2010 DOE Vehicle Technologies and Hydrogen Programs Annual Merit Review and Peer Evaluation Meeting, June 7-11, 2010 -- Washington D.C.

413

Demand, Supply, and Price Outlook for Low-Sulfur Diesel Fuel  

Gasoline and Diesel Fuel Update (EIA)

To help ensure that sulfates in engine exhaust do not To help ensure that sulfates in engine exhaust do not prevent manufacturers of heavy-duty diesel engines from meeting new particulate emissions standards for 1994 and later model years, 1 the Clean Air Act Amend- ments of 1990 (CAAA90) require refiners to reduce the sulfur content of on-highway diesel fuel from current average levels of 0.30 percent by weight to no more than 0.05 percent by weight. The new standard, which goes into effect October 1, 1993, also requires that on-highway diesel fuel have a minimum cetane index of 40 or a maximum aromatic content of 35 percent by volume. 2 (See list of terms and definitions on the fol- lowing page.) This provision is designed to prevent any future rises in aromatics levels. 3 Since the direct mea- surement of aromatics is complex, a minimum cetane

414

Complex Diesel Engine Simulation with Focus on Transient Operation  

Science Journals Connector (OSTI)

The engine bearings model takes into consideration the significant load variation during each engine cycle and, in general, the lubrication is hydrodynamic. ... Modern diesel engines are using common rail injection systems with electronically controlled injectors capable of very high injection pressure and multiple injection events per cycle. ...

Dinu Taraza; Naeim A. Henein; Radu Ceausu; Walter Bryzik

2008-02-12T23:59:59.000Z

415

The Research of the Intelligent Fault Diagnosis Optimized by ACA for Marine Diesel Engine  

Science Journals Connector (OSTI)

The marine diesel engine has the important function to guarantee the marine security and reliability. It is a strong ... with conventional FNN fault diagnosis method for this marine diesel engine’s combustion sys...

Peng Li; Lei Liu; Haixia Gong

2010-01-01T23:59:59.000Z

416

Performance and Emissions of Direct Injection Diesel Engine Fueled with Diesel Fuel Containing Dissolved Methane  

Science Journals Connector (OSTI)

State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China ... soot and nitrogen oxides, from direct injection Diesel engines, engineers have proposed various solns., one of which is the use of a gaseous fuel as a partial supplement for liq. ... (16)?Heywood, J. B. Internal Combustion Engine Fundamentals; McGraw-Hill:? New York, 1988. ...

Junqiang Zhang; Deming Jiang; Zuohua Huang; Xibin Wang; Qi Wei

2006-01-19T23:59:59.000Z

417

Heat waste recovery system from exhaust gas of diesel engine to a reciprocal steam engine.  

E-Print Network (OSTI)

??This research project was about the combined organic Rankine cycle which extracted energy from the exhaust gas of a diesel engine. There was a study… (more)

Duong, Tai Anh

2011-01-01T23:59:59.000Z

418

NREL: ReFUEL Laboratory - Engine Dynamometer Test Cells  

NLE Websites -- All DOE Office Websites (Extended Search)

Engine Dynamometer Test Cells Engine Dynamometer Test Cells The ReFUEL Laboratory features two engine dynamometer test cells-one for heavy-duty engines and another for light-duty engines. Heavy-Duty Engine Dynamometer Test Cell Capabilities Photo of heavy-duty engine dynamometer test cell in laboratory setting. Heavy-duty engines are certified as meeting emission regulations by the manufacturer using an engine dynamometer. These protocols, known as the Heavy-Duty Federal Test Procedures (HD-FTP), are highly standardized, and results can be readily compared between laboratories. Because the heavy-duty engine dynamometer test cell performs the HD-FTP on engines up to 600 hp, advanced fuels can be evaluated in a way that is meaningful to the engine-research community. In addition to testing a wide

419

10 - Friction and lubrication in diesel engine system design  

Science Journals Connector (OSTI)

Abstract: This chapter addresses engine friction and lubrication dynamics modeling in diesel engine system design. It starts by introducing important fundamental principles of engine tribology and builds up a three-level system modeling approach of engine friction. The chapter summarizes the friction characteristics and friction-reduction design measures for both the overall engine system and individual subsystems such as the piston assembly, the piston rings, the bearings, and the valvetrain.

Qianfan Xin

2013-01-01T23:59:59.000Z

420

Mixing and flame structures inferred from OH-PLIF for conventional and low-temperature diesel engine combustion  

SciTech Connect

The structure of first- and second-stage combustion is investigated in a heavy-duty, single-cylinder optical engine using chemiluminescence imaging, Mie-scatter imaging of liquid-fuel, and OH planar laser-induced fluorescence (OH-PLIF) along with calculations of fluorescence quenching. Three different diesel combustion modes are studied: conventional non-diluted high-temperature combustion (HTC) with either (1) short or (2) long ignition delay, and (3) highly diluted low-temperature combustion (LTC) with early fuel injection. For the short ignition delay HTC condition, the OH fluorescence images show that second-stage combustion occurs mainly on the fuel jet periphery in a thickness of about 1 mm. For the long ignition delay HTC condition, the second-stage combustion zone on the jet periphery is thicker (5-6 mm). For the early-injection LTC condition, the second-stage combustion is even thicker (20-25 mm) and occurs only in the down-stream regions of the jet. The relationship between OH concentration and OH-PLIF intensity over a range of equivalence ratios is estimated from quenching calculations using collider species concentrations predicted by chemical kinetics simulations of combustion. The calculations show that both OH concentration and OH-PLIF intensity peak near stoichiometric mixtures and fall by an order of magnitude or more for equivalence ratios less than 0.2-0.4 and greater than 1.4-1.6. Using the OH fluorescence quenching predictions together with OH-PLIF images, quantitative boundaries for mixing are established for the three engine combustion modes. (author)

Singh, Satbir [General Motors Research and Development, Warren, MI 48090 (United States); Musculus, Mark P.B. [Sandia National Laboratories, Livermore, CA 94551 (United States); Reitz, Rolf D. [Department of Mechanical Engineering, University of Wisconsin, Madison, WI 53706 (United States)

2009-10-15T23:59:59.000Z

Note: This page contains sample records for the topic "heavy-duty diesel engines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

The influence of propylene glycol ethers on base diesel properties and emissions from a diesel engine  

Science Journals Connector (OSTI)

Abstract The oxygenated additives propylene glycol methyl ether (PGME), propylene glycol ethyl ether (PGEE), dipropylene glycol methyl ether (DPGME) were studied to determine their influence on both the base diesel fuel properties and the exhaust emissions from a diesel engine (CO, NOx, unburnt hydrocarbons and smoke). For diesel blends with low oxygen content (?4.0 wt.%), the addition of these compounds to base diesel fuel decreases aromatic content, kinematic viscosity, cold filter plugging point and Conradson carbon residue. Also, each compound modifies the distillation curve at temperatures below the corresponding oxygenated compound boiling point, the distillate percentage being increased. The blend cetane number depends on the type of propylene glycol ether added, its molecular weight, and the oxygen content of the fuel. The addition of PGME decreased slightly diesel fuel cetane number, while PGEE and DPGME increased it. Base diesel fuel-propylene glycol ether blends with 1.0 and 2.5 wt.% oxygen contents were used in order to determine the performance of the diesel engine and its emissions at both full and medium loads and different engine speeds (1000, 2500 and 4000 rpm). In general, at full load and in comparison with base diesel fuel, the blends show a slight reduction of oxygen-free specific fuel consumption. CO emissions are reduced appreciably for 2.5 wt.% of oxygen blends, mainly for PGEE and DPGME. \\{NOx\\} emissions are reduced slightly, but not the smoke. Unburnt hydrocarbon emissions decrease at 1000 and 2500 rpm, but not at 4000 rpm. At medium load, the effect of the additives is much less significant, due to the fact that the ratio oxygen from additive/oxygen from air is much lower.

F. Gómez-Cuenca; M. Gómez-Marín; M.B. Folgueras-Díaz

2013-01-01T23:59:59.000Z

422

Performance and emissions of a diesel tractor engine fueled with marine diesel and soybean methyl ester  

Science Journals Connector (OSTI)

Biodiesel is an alternative fuel that is cleaner than petrodiesel. Biodiesel can be used directly as fuel for a diesel engine without having to modify the engine system. It has the major advantages of having high biodegradability, excellent lubricity and no sulfur content. This paper presents the results of investigations carried out in studying the fuel properties of soybean methyl ester (SME) and its blend with marine diesel fuel from 5%, 20% and 50% blends by volume and in running a diesel engine with these fuels. The results indicate that the use of biodiesel produces lower smoke opacity (up to 74%), but higher brake specific fuel consumption (BSFC) (up to 12%) compared to marine fuel (MF). The measured carbon monoxide (CO) emissions of B5 and B100 fuels were found to be 3% and 52% lower than that of the MF, respectively.

B. Gokalp; E. Buyukkaya; H.S. Soyhan

2011-01-01T23:59:59.000Z

423

A Neural Network Approach for the Correlation of Exhaust Emissions from a Diesel Engine with Diesel Fuel Properties  

Science Journals Connector (OSTI)

National Technical University of Athens, Department of Chemical Engineering, Iroon Polytechniou 9, Athens 157 80, Greece ... The emissions from diesel engines have been drastically reduced during the last 30 years as a result of significant improvement in engine technology and modification of diesel fuel. ... First principles models are using fundamental equations, which have been developed by analyzing the physical insight of the systems. ...

D. Karonis; E. Lois; F. Zannikos; A. Alexandridis; H. Sarimveis

2003-08-15T23:59:59.000Z

424

Effects of Fuel Injection Timing on Combustion and Emission Characteristics of a Diesel Engine Fueled with Diesel?Propane Blends  

Science Journals Connector (OSTI)

Effects of Fuel Injection Timing on Combustion and Emission Characteristics of a Diesel Engine Fueled with Diesel?Propane Blends ... State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China, and College of Vehicle & Motive Power Engineering, Henan University of Science and Technology, Luoyang, 471003, China ... It is the third most widely used vehicle fuel behind the gasoline and diesel fuels.1 Diesel fuel has been widely used in internal combustion engines due to its high thermal efficiency and low CO2 emission. ...

Zhihao Ma; Zuohua Huang; Chongxiao Li; Xinbin Wang; Haiyan Miao

2007-03-07T23:59:59.000Z

425

Hydrogen assisted combustion of ethanol in Diesel enginesHydrogen assisted combustion of ethanol in Diesel engines Anil Singh Bika, Luke Franklin, Prof. David B. Kittelson  

E-Print Network (OSTI)

Hydrogen assisted combustion of ethanol in Diesel enginesHydrogen assisted combustion of ethanol a means of using nearly pure ethanol as a diesel engine fuel by using hydrogen rich gases to facilitate of combustion (SOC) · A good diesel fuel has a low ignition delay period and hence a high CN · Ethanol has

Minnesota, University of

426

BMW Diesel Engines - Dynamic, Efficient and Clean  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

about cars General Attitude towards Driving & Cars Market Study Diesel Image Germany and UK 2005 74 85 75 82 60 72 65 66 64 66 56 60 60 51 54 66 83 83 89 62 57 29 32 64...

427

French perspective on diesel engines & emissions  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

smell, smoke Image CNG (CH4) Hybrid Diesel + DPF Electric Users' point of view Greenhouse effect Maintenance Investment extra costs Pollutants N o x P M CNG C N G Hybrid Hybrid...

428

Novel injector techniques for coal-fueled diesel engines  

SciTech Connect

This report, entitled Novel Injector Techniques for Coal-Fueled Diesel Engines,'' describes the progress and findings of a research program aimed at development of a dry coal powder fuel injector in conjunction with the Thermal Ignition Combustion System (TICS) concept to achieve autoignition of dry powdered coal in a single-cylinder high speed diesel engine. The basic program consisted of concept selection, analysis and design, bench testing and single cylinder engine testing. The coal injector concept which was selected was a one moving part dry-coal-powder injector utilizing air blast injection. Adiabatics has had previous experience running high speed diesel engines on both direct injected directed coal-water-slurry (CWS) fuel and also with dry coal powder aspirated into the intake air. The Thermal Ignition Combustion System successfully ignited these fuels at all speeds and loads without requiring auxiliary ignition energy such as pilot diesel fuel, heated intake air or glow or spark plugs. Based upon this prior experience, it was shown that the highest efficiency and fastest combustion was with the dry coal, but that the use of aspiration of coal resulted in excessive coal migration into the engine lubrication system. Based upon a desire of DOE to utilize a more modern test engine, the previous naturally-aspirated Caterpillar model 1Y73 single cylinder engine was replaced with a turbocharged (by use of shop air compressor and back pressure control valve) single cylinder version of the Cummins model 855 engine.

Badgley, P.R.

1992-09-01T23:59:59.000Z

429

Measurements of the soot emissions and engine operat-ing parameters from a diesel engine during transient op-  

E-Print Network (OSTI)

ABSTRACT Measurements of the soot emissions and engine operat- ing parameters from a diesel engine and are the subject of future research. INTRODUCTION Soot emissions from diesel engines are well known to have gov- erning the emission of particles from diesel engines are becoming ever more stringent. The soot

Daraio, Chiara

430

Integrated Engine and Aftertreatment Technology Roadmap for EPA...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Integrated Engine and Aftertreatment Technology Roadmap for EPA 2010 Heavy-duty Emissions Regulations Integrated Engine and Aftertreatment Technology Roadmap for EPA 2010...

431

Emission Characteristics of a Diesel Engine Operating with In-Cylinder Gasoline and Diesel Fuel Blending  

SciTech Connect

Advanced combustion regimes such as homogeneous charge compression ignition (HCCI) and premixed charge compression ignition (PCCI) offer benefits of reduced nitrogen oxides (NOx) and particulate matter (PM) emissions. However, these combustion strategies often generate higher carbon monoxide (CO) and hydrocarbon (HC) emissions. In addition, aldehydes and ketone emissions can increase in these modes. In this study, the engine-out emissions of a compression-ignition engine operating in a fuel reactivity- controlled PCCI combustion mode using in-cylinder blending of gasoline and diesel fuel have been characterized. The work was performed on a 1.9-liter, 4-cylinder diesel engine outfitted with a port fuel injection system to deliver gasoline to the engine. The engine was operated at 2300 rpm and 4.2 bar brake mean effective pressure (BMEP) with the ratio of gasoline to diesel fuel that gave the highest engine efficiency and lowest emissions. Engine-out emissions for aldehydes, ketones and PM were compared with emissions from conventional diesel combustion. Sampling and analysis was carried out following micro-tunnel dilution of the exhaust. Particle geometric mean diameter, number-size distribution, and total number concentration were measured by a scanning mobility particle sizer (SMPS). For the particle mass measurements, samples were collected on Teflon-coated quartz-fiber filters and analyzed gravimetrically. Gaseous aldehydes and ketones were sampled using dinitrophenylhydrazine-coated solid phase extraction cartridges and the extracts were analyzed by liquid chromatography/mass spectrometry (LC/MS). In addition, emissions after a diesel oxidation catalyst (DOC) were also measured to investigate the destruction of CO, HC and formaldehydes by the catalyst.

Prikhodko, Vitaly Y [ORNL; Curran, Scott [ORNL; Barone, Teresa L [ORNL; Lewis Sr, Samuel Arthur [ORNL; Storey, John Morse [ORNL; Cho, Kukwon [ORNL; Wagner, Robert M [ORNL; Parks, II, James E [ORNL

2010-01-01T23:59:59.000Z

432

Investigation of the Application of the European PMP Method to Clean Heavy Duty Vehicles  

Energy.gov (U.S. Department of Energy (DOE))

Presentation given at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

433

LNT + SCR Aftertreatment for Medium-Heavy Duty Applications: A Systems Approach  

Energy.gov (U.S. Department of Energy (DOE))

Poster presentation at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

434

Development of NOx Adsorber System for Dodge Ram 2007 Heavy duty Pickup Truck  

Energy.gov (U.S. Department of Energy (DOE))

Presentation given at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

435

Summary of In-Use Evaluation of Two Heavy Duty Hybrid Applications...  

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

on-road diesel engine and compares emissions as well as fuel economy benefits. p-14johnson.pdf More Documents & Publications Evaluation of NTE Windows and a Work-Based Method...

436

Engine state monitoring and fault diagnosis of large marine diesel engines  

Science Journals Connector (OSTI)

The reliable detection of engine malfunctions in order to predict and to ... of industry. For instance, occurring faults of marine diesel engines which are on the high seas for ... systems (CMS) should be able to...

D. Watzenig; M. S. Sommer; G. Steiner

2009-05-01T23:59:59.000Z

437

Prediction of marine diesel engine performance under fault conditions  

Science Journals Connector (OSTI)

The diesel engine, due to its superior efficiency when compared to other thermal engines, is widely used for propulsion of marine vessels. Since in such applications the power concentration is critical, most marine diesel engines are of the turbocharged type. Turbocharging has a serious effect on engine performance due to the interaction between the turbocharger and the engine. This interaction makes the detection of engine faults extremely difficult since a specific fault affects the turbocharger and through it the engine. For this reason various methods have been proposed for the detection of engine faults. The present author has in the past presented a method for marine diesel diagnosis by processing measured engine data using a simulation model. In the present work a completely different approach is followed; an attempt is made to use a simulation model to predict marine diesel engine performance under various fault conditions. The method is applied to a newly built vessel powered by a slow speed two stroke marine diesel engine. Using the engine shop trial data obtained under propeller law the simulation model constants are determined, using an automatic method that has been developed. The comparison of results obtained with the data from the official shop trials confirms the accuracy of the model and its ability to predict almost all operating parameters of the engine. The model is then used to produce results by simulating various engine faults or faults of its subsystems. From this analysis their impact on various measurable engine parameters is determined. It is interesting to see that in the case of turbocharged engines some faults have a different effect when compared to naturally aspirated ones. Also, it is revealed that without the use of modeling in many cases it is relatively difficult to determine the actual cause for an engine malfunction, since the observed effects on engine performance are similar. The proposed method is promising and assists the engineer to understand the actual effect of various faults on engine performance. Also it can be used as a training tool since it is easy to simulate various engine faults, a procedure which is extremely difficult, if not impossible, to perform on the field.

Dimitrios T Hountalas

2000-01-01T23:59:59.000Z

438

ATP-LD; Cummins Next Generation Tier 2 Bin 2 Diesel Engine |...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

ATP-LD; Cummins Next Generation Tier 2 Bin 2 Diesel Engine ATP-LD; Cummins Next Generation Tier 2 Bin 2 Diesel Engine 2012 DOE Hydrogen and Fuel Cells Program and Vehicle...

439

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

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

& Publications Cummins' Next Generation Tier 2, Bin 2 Light Truck Diesel Engine ATP-LD; Cummins Next Generation Tier 2 Bin 2 Diesel Engine ATP-LD; Cummins Next Generation...

440

A Study of Emissions from a Light Duty Diesel Engine with the...  

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

A Study of Emissions from a Light Duty Diesel Engine with the European Particulate Measurement Programme A Study of Emissions from a Light Duty Diesel Engine with the European...

Note: This page contains sample records for the topic "heavy-duty diesel engines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Prime Movers of Globalization: The History and Impact of Diesel Engines and Gas Turbines  

E-Print Network (OSTI)

of Diesel Engines and Gas Turbines By Vaclav Smil Reviewedof Diesel Engines and Gas Turbines. Cambridge, MA: The MITin the 1890s and the gas turbine invented by Frank Whittle

Anderson, Byron P.

2011-01-01T23:59:59.000Z

442

Optimization of the Combustion in Large Marine Diesel Engine by Controlling the Exhaust Gas  

Science Journals Connector (OSTI)

The diesel engine performance and emissions are strongly linked to ... to regulate the air-fuel mixture in a diesel engine, by controlling the turbocharger speed through a ... work we have taken as a model a marine

Sabri Bechir

2013-01-01T23:59:59.000Z

443

Practical implications of marine diesel engine emission regulations  

SciTech Connect

The main pollutants from marine diesel engines are oxides of nitrogen (NOx), sulfur oxides (SOx) and particulates (soot). However, the proposed marine diesel engine emission regulations will primarily focus on the levels of NOx and SOx. In the future, once the proposed regulations are met, the limits and levels of other emissions will come under increasing scrutiny, such as particulates, hydrocarbons and carbon monoxide. Regardless of the type of pollutant, there are generally two classes of emission control: (1) techniques that reduce the amount of pollutant formed in the combustion process, or (2) prevent the pollutants from reaching the atmosphere. Unfortunately, some of these control techniques will not be able to meet the incoming regulations. Therefore, this paper identifies the diesel engine emissions of concern, the impending regulations, and the merits of current and future emission control technologies required to meet these regulations.

Bowen, C.E.; Potter, I.J.; Reader, G.T. [Univ. of Calgary, Alberta (Canada). Dept. of Mechanical Engineering

1996-09-01T23:59:59.000Z

444

Clean Cities Guide to Alternative Fuel and Advanced Medium- and Heavy-Duty Vehicles (Book), Clean Cities, Energy Efficiency & Renewable Energy (EERE)  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

School Bus * Shuttle Bus * Transit Bus * Refuse Truck * Tractor * Van * Vocational Truck School Bus * Shuttle Bus * Transit Bus * Refuse Truck * Tractor * Van * Vocational Truck Clean Cities Guide to Alternative Fuel and Advanced Medium- and Heavy-Duty Vehicles Clean Cities Guide to Alternative Fuel and Advanced Medium- and Heavy-Duty Vehicles 2 Clean Cities Guide to Alternative Fuel and Advanced Medium- and Heavy-Duty Vehicles 3 Table of Contents About the Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Heavy-Duty Vehicle Application Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Heavy-Duty Emission Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Multiple-Stage Construction of Medium- and Heavy-Duty Vehicles . . . . . . . . . . . . . . . . . . 6 Chassis Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

445

Influence of using emulsified diesel fuel on the performance and pollutants emitted from diesel engine  

Science Journals Connector (OSTI)

Abstract This manuscript investigates the effect of emulsified diesel fuel on the engine performance and on the main pollutant emissions for a water-cooled, four stroke, four cylinders, and direct injection diesel engine. Emulsified diesel fuels with water content of range 0–30% by volume were used. The experiments were conducted in the speed range from 1000 to 3000 rpm. It was found that, in general, the using emulsified fuel improves the engine performance and reduces emissions. While the brake specific fuel consumption (BSFC) has a minimum value at 5% water content and 2000 rpm. The torque (T), the break mean effective pressure (BMEP) and thermal efficiency (?th) are found to have maximum values under these conditions. The emission CO2 was found to increase with engine speed and to decrease with water content. \\{NOx\\} produced from emulsified fuel is significantly less than that produced from pure diesel under the same conditions. And as the percentage of water content in the emulsion increases, the emitted amount of oxygen also increases.

Ali Alahmer

2013-01-01T23:59:59.000Z

446

Combustion and Emission Characteristics of a Direct-Injection Diesel Engine Fueled with Diesel?Diethyl Adipate Blends  

Science Journals Connector (OSTI)

The advantage of a diesel engine compared with a gasoline engine is the fuel economy benefits; however, the high NOx and smoke emissions still remain the main obstacles for the increasing application of diesel engines with the increasing concerns for environmental protection and implementation of more stringent exhaust gas regulations, thus further reduction in engine emissions becomes one of major tasks in engine development. ... In the application of pure oxygenated fuels, Fleisch et al.,1 Kapus et al.,2 and Sorenson et al.3 have studied dimethyl ether (DME) in the modified diesel engine, and their results showed that the engine could achieve ultralow emission prospects without fundamental change in combustion systems. ... Murayama, T.; Zheng, M.; Chikahisa, T. Simultaneous reduction of smoke and NOx from a DI diesel engine with EGR and dimethyl carbonate; SAE paper 952518, Society of Automotive Engineers:? Warrendale, PA, 1995. ...

Yi Ren; Zuohua Huang; Haiyan Miao; Deming Jiang; Ke Zeng; Bing Liu; Xibin Wang

2007-04-19T23:59:59.000Z

447

Precise instrumentation of a diesel single-cylinder research engine  

Science Journals Connector (OSTI)

The accuracy of any empirical result is a direct consequence of the quality of experimental setup and the strict control over testing conditions. For internal combustion engines, a large number of parameters that also exhibit complex interdependence may significantly affect the engine performance. Therefore, this work describes the essentials required to establish a high-quality diesel engine research laboratory. A single-cylinder diesel engine is taken as the fundamental building block and the requirements for all essential sub-systems including fuel, intake, exhaust, coolant and exhaust gas recirculation (EGR) are laid out. The measurement and analysis of cylinder pressure, and exhaust gas sampling/conditioning requirements for emission measurement are discussed in detail. The independent control of EGR and intake boost is also highlighted. The measurement and analysis techniques are supported with empirical data from a single-cylinder diesel engine setup. The emphasis is on providing the necessary guidelines for setting up a fully-instrumented diesel engine test laboratory.

Usman Asad; Raj Kumar; Xiaoye Han; Ming Zheng

2011-01-01T23:59:59.000Z

448

Tailoring key fuel properties of diesel–biodiesel–ethanol blends for diesel engine  

Science Journals Connector (OSTI)

Alternative fuel research for the profusely growing number of diesel run automotive has intensified due to environmental reasons and turmoil in petroleum market. Government initiatives all around the world, their energy policies and steps to emphasis the use of biodiesel; proved biodiesel as a number one renewable substitute for No. 2 diesel fuels. Among all biodiesel feedstock, palm oil is a potential source with higher yield rate without much fertilizer use especially in tropical region. However, the application of transesterified palm biodiesel is objected by many auto-manufacturers due to adverse effects on engine in long term operation. The aim of this study was to modify the key fuel properties of palm biodiesel which causes engine fouling in long term operation. A significant amount of work is devoted to mix biodiesel and diesel at arbitrary percentages and test engine performance. Numerous fuel additives are developed for biodiesels automotive use. In this study, chemical properties of biodiesel are tailored by ethanol and an optimum formulation is derived mathematically. Ethanol is used at a controlled proportion (6%) with palm oil methyl ester (POME) as additive to reduce the higher viscosity of POME. This optimum palm biodiesel–ethanol blend was mixed at varying proportions (i.e. 0–30%) with No. 2 diesel to produce ternary blends of diesel–palm biodiesel–ethanol. Cold flow properties (such as, could point, pour point) of these ternary blends has improved and minute percentage of ethanol adding did not adversely affect the oxidation stability and corrosiveness of the fuel blend. Ethanol has significantly reduces the flash point, but the flammability of ternary blends is classified as Class II; similar to that of diesel. Cetane number is reduced in ternary blends by ethanol. So, palm biodiesel with minute percentage of anhydrous ethanol as additive in the ternary blend significantly improved key fuel properties significantly.

Md. Jayed Hussan; Masjuki Hj. Hassan; Md. Abul Kalam; Liaquat Ali Memon

2013-01-01T23:59:59.000Z

449

Top U.S. Automakers Collaborate to Improve Heavy-Duty Freight Efficiency |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Top U.S. Automakers Collaborate to Improve Heavy-Duty Freight Top U.S. Automakers Collaborate to Improve Heavy-Duty Freight Efficiency Top U.S. Automakers Collaborate to Improve Heavy-Duty Freight Efficiency November 22, 2013 - 5:37pm Addthis As part of the 21st Century Truck Partnership, the Army will demonstrate technology that converts waste heat from an exhaust system to electricity used in its Stryker vehicle. | Photo courtesy of courtesy of U.S. Army As part of the 21st Century Truck Partnership, the Army will demonstrate technology that converts waste heat from an exhaust system to electricity used in its Stryker vehicle. | Photo courtesy of courtesy of U.S. Army Natalie Committee Communications Specialist, Office of Energy Efficiency and Renewable Energy Detroit, the hub of America's automotive industry hosted a gathering of

450

Fuel Economy Improvement Potential of a Heavy Duty Truck using V2x Communication  

SciTech Connect

In this paper, we introduce an intelligent driver assistance system to reduce fuel consumption in heavy duty vehicles irrespective of the driving style of the driver. We specifically study the potential of V2I and V2V communications to reduce fuel consumption in heavy duty trucks. Most ITS communications today are oriented towards vehicle safety, with communications strategies and hardware that tend to focus on low latency. This has resulted in technologies emerging with a relatively limited range for the communications. For fuel economy, it is expected that most benefits will be derived with greater communications distances, at the scale of many hundred meters or several kilometers, due to the large inertia of heavy duty vehicles. It may therefore be necessary to employ different communications strategies for ITS applications aimed at fuel economy and other environmental benefits than what is used for safety applications in order to achieve the greatest benefits.

LaClair, Tim J [ORNL; Verma, Rajeev [Eaton Corporation; Norris, Sarah [Eaton Corporation; Cochran, Robert [Eaton Corporation

2014-01-01T23:59:59.000Z

451

Mass Flow Estimation with Model Bias Correction for a Turbocharged Diesel Engine  

E-Print Network (OSTI)

Mass Flow Estimation with Model Bias Correction for a Turbocharged Diesel Engine Tomás Polóni. Based on an augmented observable Mean Value En- gine Model (MVEM) of a turbocharged Diesel engine in the intake duct. Keywords: Diesel engine, Mass flow estimation, Bias estimation, Kalman filtering, Mean value

Johansen, Tor Arne

452

JET BREAKUP and SPRAY FORMATION in a DIESEL ENGINE James Glimm  

E-Print Network (OSTI)

JET BREAKUP and SPRAY FORMATION in a DIESEL ENGINE James Glimm Department of Applied Mathematics of a fuel eÃ?cient, nonpollut- ing diesel engine. We report preliminary progress on the numerical simulation Introduction The design of a fuel eÃ?cient, nonpolluting diesel engine is the subject of intensive international

New York at Stoney Brook, State University of

453

Free-Piston Diesel Engine Dynamics and Control Tor A. Johansen1, Olav Egeland  

E-Print Network (OSTI)

Free-Piston Diesel Engine Dynamics and Control Tor A. Johansen1, Olav Egeland , Erling Aa. Kv rner ASA, Postboks 169, N-1325 Lysaker, Norway. Abstract Free-piston diesel engines. This paper present a dynamic mathematical model of a free-piston diesel engine, a control oriented dynamic

Johansen, Tor Arne

454

Adaptive Air Charge Estimation for Turbocharged Diesel Engines without Exhaust Gas Recirculation  

E-Print Network (OSTI)

Adaptive Air Charge Estimation for Turbocharged Diesel Engines without Exhaust Gas Recirculation an adaptive observer for in-cylinder air charge estimation for turbocharged diesel engines without exhaust gas (734) 764-4256 1 #12;Storset et al.- Adaptive Air Charge Est. for TC Diesel Engines 2 1 Introduction

Stefanopoulou, Anna

455

The process of soot formation in a DI Diesel engine is very challenging to understand and  

E-Print Network (OSTI)

Background The process of soot formation in a DI Diesel engine is very challenging to understand and describe. But with respect to the demand for much lower particulate emissions (Tab.1) of Diesel engines emissi- ons of a medium duty DI Diesel engine which is certified for the TIER 3 norm should be evaluated

Sandoghdar, Vahid

456

Tallow Biodiesel: Properties Evaluation and Consumption Tests in a Diesel Engine  

Science Journals Connector (OSTI)

Tallow Biodiesel: Properties Evaluation and Consumption Tests in a Diesel Engine ... Then, the mixture of alkyl esters of fatty acids from vegetable oils or animal fats is named biodiesel and used in diesel engines, pure or blended with mineral diesel. ... Industrial & Engineering Chemistry Research (1998), 37 (9), 3768-3771 CODEN: IECRED; ISSN:0888-5885. ...

Maria Silvana Aranda Moraes; Laiza Canielas Krause; Michele Espinosa da Cunha; Candice Shimitt Faccini; Eliana Weber de Menezes; Renato Cataluña Veses; Maria Regina Alves Rodrigues; Elina Bastos Caramão

2008-03-15T23:59:59.000Z

457

Control-Oriented Linear Parameter-Varying Modelling of a Turbocharged Diesel Engine  

E-Print Network (OSTI)

Control-Oriented Linear Parameter-Varying Modelling of a Turbocharged Diesel Engine Merten Jung-- In this paper, a third order nonlinear model of the airpath of a turbocharged diesel engine is derived, which nonlinear airpath model of the diesel engine will be described in Section III. The model will be derived

Cambridge, University of

458

Direct Capillary Gas Chromatography of Filter-Borne Particulate Emissions from Diesel Engines  

Science Journals Connector (OSTI)

......Filter-Borne Particulate Emissions from Diesel Engines R.D. Cuthbertson P.R. Shore...Filter-Borne Particulate Emissions from Diesel Engines R.D. Cuthbertson and P.R...oil-derived material. Introduction Diesel engines emit particulate matter consisting......

R.D. Cuthbertson; P.R. Shore

1988-03-01T23:59:59.000Z

459

The Performance Analysis on Fuel Injection System Failure for a Four-Stroke Marine Diesel Engine  

Science Journals Connector (OSTI)

The middle speed four stroke diesel engine has the advantages of small capacity, light in weight, capable to combustion poor fuel oil. In recent years, they have been used more comprehensive than before. Daihatsu 6PSHdM-26H diesel engine, which is a ... Keywords: 4-stroke medium-speed turbocharged marine diesel engine, Fuel injection system failure, delayed combustion, performance analysis

Jialiang Huang; Guohao Yang; Dan Wang

2010-12-01T23:59:59.000Z

460

Experimental investigation on thermal barrier coated diesel engine fueled with diesel-biodiesel-ethanol-diethyl ether blends  

Science Journals Connector (OSTI)

In the present work diesel-biodiesel-ethanol (DBE) and diesel-biodiesel-diethyl ether (DBD) fuels are tested with normal diesel engine and the diesel engine coated with the layers of aluminum oxide (Al 2O3) of 0.3?mm and yttria-stabilized zirconia of 0.2?mm. The various performance and emission parameters are analyzed and determined. The experimental work was carried out in a single cylinder water cooled engine coupled with eddy current dynamometer. The AVL make five gas analyzer and smoke meter were used to measure the different exhaust pollutants. The result shows that the brake thermal efficiency of coated engine is more than that of base diesel at high loads. The thermal barrier coated engine using fuel as diesel biodiesel and ethanol (TDBE) produces the lowest carbon monoxide (CO) emissions among all the fuels that are selected. In addition it produces the lowest carbon dioxide (CO2) at higher loads. Both the thermal barrier coated engine using fuel as diesel biodiesel and diethyl ether (TDBD) and TDBE have higher NOx emissions among almost all the fuels used. The TDBE and TDBD have higher smoke emissions at initial loads but eventually show lower smoke emissions at higher loads. The thermal barrier coated diesel engine fueled with DBE and DBD shows an increase in engine power and specific fuel consumption as well as significant improvements in exhaust gas emissions except NOx.

2013-01-01T23:59:59.000Z

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While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Experimental analysis of a diesel engine operating in Diesel–Ethanol Dual-Fuel mode  

Science Journals Connector (OSTI)

Abstract The use of engines is necessary to keep the world moving. Such engines are fed mainly by fossil fuels, among these, the diesel. The operation and the behavior of engines in different thermodynamic cycles, with common fossil fuels, it is still challenging but, in general, it has well known and documented data. On the other hand, for alternative fuels, there is still demand of experimental data, particularly considering that it is desirable, most of the times, the use of a system with dual mode (reversible). Such systems are called Dual-Fuel, it brings a greater degree of freedom, but imply in technological challenges. In this paper we used an engine operating with single cylinder direct injection diesel and port ethanol injection system in Dual-Fuel mode with a 100% electronically controlled calibration. The methodology applied was, once the engine calibration was given to achieve the best specific fuel consumption or the MBT (Maximum Brake Torque) in each load condition, to gradually substitute the diesel oil by ethanol in compliance with the requirements established. Comparisons were made among working conditions considering the rate of diesel substitution and the energy indicated efficiency. Initially, the flow structure in the combustion chamber was tested in both ‘quiescent’ and high “swirl” modes. Compression ratios were adjusted at 3 different levels: 14:1, 16:1 and 17:1. It was tested two injectors, the first one of 35 g/s and another of 45 g/s. Regarding pressure diesel injection, 4 levels were investigated namely 800, 1000, 1200 and 1400 bar.

Roberto Freitas Britto Jr.; Cristiane Aparecida Martins

2014-01-01T23:59:59.000Z

462

Second Stage Intercooling Using LNG for Turbocharged Heavy Duty Road Vehicles Phase I Final Report  

SciTech Connect

It is well documented in engine performance literature that reduced engine inlet air temperature increases power output and reduces NO, emissions for both diesel and spark ignited (SI) engines. In addition, reduced inlet temperature increases the knock resistance of SI engines. In that most HD natural gas engines are SI derivatives of diesel engines it is appropriate to evaluate the benefits of reduced engine air temperature through LNG fuel. This project investigated the ''real world'' possibilities of a patented process for utilizing the ''cold'' in LNG to chill engine inlet air. The results support the conclusion that doing so is a practical means to increase engine power and reduce engine-out NO{sub x}.

None

1999-09-21T23:59:59.000Z

463

Stoichiometric Compression Ignition (SCI) Engine Concept | Department...  

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

More Documents & Publications An Experimental Investigation of the Origin of Increased NOx Emissions When Fueling a Heavy-Duty Compression-Ignition Engine with...

464

Conversion of a diesel engine to a spark ignition natural gas engine  

SciTech Connect

Requirements for alternatives to diesel-fueled vehicles are developing, particularly in urban centers not in compliance with mandated air quality standards. An operator of fleets of diesel- powered vehicles may be forced to either purchase new vehicles or equip some of the existing fleets with engines designed or modified to run on alternative fuels. In converting existing vehicles, the operator can either replace the existing engine or modify it to burn an alternative fuel. Work described in this report addresses the problem of modifying an existing diesel engine to operate on natural gas. Tecogen has developed a technique for converting turbocharged automotive diesel engines to operate as dedicated spark-ignition engines with natural gas fuel. The engine cycle is converted to a more-complete-expansion cycle in which the expansion ratio of the original engine is unchanged while the effective compression ratio is lowered, so that engine detonation is avoided. The converted natural gas engine, with an expansion ratio higher than in conventional spark- ignition natural gas engines, offers thermal efficiency at wide-open- throttle conditions comparable to its diesel counterpart. This allows field conversion of existing engines. Low exhaust emissions can be achieved when the engine is operated with precise control of the fuel air mixture at stoichiometry with a 3-way catalyst. A Navistar DTA- 466 diesel engine with an expansion ratio of 16.5 to 1 was converted in this way, modifying the cam profiles, increasing the turbocharger boost pressure, incorporating an aftercooler if not already present, and adding a spark-ignition system, natural gas fuel management system, throttle body for load control, and an electronic engine control system. The proof-of-concept engine achieved a power level comparable to that of the diesel engine without detonation. A conversion system was developed for the Navistar DT 466 engine. NOx emissions of 1.5 g/bhp-h have been obtained.

NONE

1996-09-01T23:59:59.000Z

465

Effect of Injection Pressure on the Combustion, Performance, and Emission Characteristics of a Diesel Engine Fueled with Methanol-blended Diesel Fuel  

Science Journals Connector (OSTI)

Effect of Injection Pressure on the Combustion, Performance, and Emission Characteristics of a Diesel Engine Fueled with Methanol-blended Diesel Fuel ... Recently, the use of diesel engines has increased by virtue of their low fuel consumption and high efficiencies. ... Tests on the engine fuelled with diesel only were made, and the performance evaluated to form a basis for comparison for those of ethanol-diesel dual fuelling. ...

Mustafa Canakci; Cenk Sayin; Ahmet Necati Ozsezen; Ali Turkcan

2009-05-04T23:59:59.000Z

466

GEI 41040G - Specification for Fuel Gases for COmbustion in Heavy-Duty Gas Turbines  

NLE Websites -- All DOE Office Websites (Extended Search)

Gas Turbine Gas Turbine Revised, January 2002 GEI 41040G These instructions do not purport to cover all details or variations in equipment nor to provide for every possible contingency to be met in connection with installation, operation or maintenance. Should further information be desired or should particular problems arise which are not covered sufficiently for the purchaser's purposes the matter should be referred to the GE Company. © 1999 GENERAL ELECTRIC COMPANY Specification for Fuel Gases for Combustion in Heavy-Duty Gas Turbines GEI 41040G Specification for Fuel Gases for Combustion in Heavy-Duty Gas Turbines 2 TABLE OF CONTENTS I. INTRODUCTION 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

467

Statistics on cylinder wear in marine diesel engines  

Science Journals Connector (OSTI)

A description of the United Steamship Company's efforts to elucidate statistically the problems in connection with cylinder wear in marine diesel engines, by the use of punched cards and electronic digital computers. Further, some hypotheses concerning the causes of cylinder wear and the way to overcome it are given.

H.D. Lees

1959-01-01T23:59:59.000Z

468

Increasing efficiency, reducing emissions with hydrous ethanol in diesel engines  

E-Print Network (OSTI)

Increasing efficiency, reducing emissions with hydrous ethanol in diesel engines Ethanol continuedOber 2013 Catalystcts.umn.edu Nearly all corn-based ethanol produced in the United States is anhydrous processes required to remove the water from ethanol consume a great deal of energy. Researchers from

Minnesota, University of

469

Effect of Exhaust Gas Recirculation (EGR) on Diesel Engine Oil- Impact on Wear  

Energy.gov (U.S. Department of Energy (DOE))

Results of completed study on the effect of four exhaust gas recirculation levels on diesel engine oil during standard test with an API Cummins M-11 engine.

470

Combustion Characterization and Ignition Delay Modeling of Low- and High-Cetane Alternative Diesel Fuels in a Marine Diesel Engine  

Science Journals Connector (OSTI)

Mechanical and Aerospace Engineering Department, U.S. Naval Postgraduate School, Watkins Hall 700 Dyer Road Monterey, California 93943-5100, United States ... However, this study was done using an indirect injection diesel engine that may be uncharacteristic for typical diesel engines, which utilize direct injection. ... The IGD can, in turn, be used to provide qualitative or even quantitative prediction of other operational parameters such as peak pressure, maximum rate of pressure rise, or the general viability of the fuel in a diesel engine. ...

John Petersen; Doug Seivwright; Patrick Caton; Knox Millsaps

2014-07-10T23:59:59.000Z

471

Combustion characteristics of coal fuels in adiabatic diesel engines  

SciTech Connect

An experimental investigation was conducted to determine the combustion characteristics of coal fuels in adiabatic diesel engines. For this purpose engine testing was carried out by the fumigation of fine coal powder to the intake of an insulated and uncooled single cylinder diesel engine. The engine tests conducted include three types of fuels - Diesel fuel No. 2 (DF-2), Dual fuel (DF-2 + Coal), and Coal fuel. Excellent combustion characteristics of coal fuels were obtained in the present work in an adiabatic engine operating at high temperatures. The ''thermal ignition'' concept uncovered in this investigation led to a hot ''ignition chamber'' which provided ignition of the coal fuel. The high temperature engine with the ''ignition chamber'' permitted engine operation on 100% coal fuel without any external ignition aids or compression ignition. With the addition of a glow plug, the coal fueled engine was successfully cold started. For the coal fueled engine tests, analysis of cylinder pressure data showed rapid heat release rates, shorter combustion duration and very fast burning of coal powder fuel. Preliminary results of the apparent indicated cycle efficiency calculated from the heat release data, indicate that 100% coal powder fueled engine has higher cycle efficiency than DF-2 fueled engine in an adiabatic configuration. The problems encountered during the engine tests include: variation in the engine speed and load due to non-uniform coal flow rate by the coal feed system, contamination of the lubricating oil with fine coal powder, and wear of conventional piston rings. However, these problems can be solved with an improved coal feed system and wear resistant ceramic materials for the piston rings. 33 refs.

Kamo, R.; Kakwani, R.M.; Woods, M.E.; Valdmanis, E.

1986-06-01T23:59:59.000Z

472

2 - Durability and reliability in diesel engine system design  

Science Journals Connector (OSTI)

Abstract: Consideration of durability and reliability is necessary at the earliest stage of system design. This chapter presents the theory and analysis methods of durability and reliability in diesel engine system design. It begins by describing engine durability issues, followed by an elaboration on the relationship between performance and durability through the discussions on system-level loading and durability design constraints. It then provides a systematic introduction on the fundamentals of thermo-mechanical failures and the applications on diesel engine cylinder head, exhaust manifold, valvetrain, piston, turbocharger and aftertreatment devices, followed by discussions on cylinder liner cavitation, engine wear, and EGR cooler durability. An integrated analysis approach on system durability–reliability is finally summarized.

Qianfan Xin

2013-01-01T23:59:59.000Z

473

Air charge system emulation for diesel engine.  

E-Print Network (OSTI)

??The work presented in this thesis details a novel engine evaluation approach utilising real-time simulation and advanced engine testing systems for general applicability to new… (more)

Zhang, Kai

2010-01-01T23:59:59.000Z

474

Assessment of fuel efficiency of neem biodiesel (Azadirachta indica) in a single cylinder diesel engine  

Science Journals Connector (OSTI)

Increase of petroleum diesel usage and its environmental pollution necessitate the study of alternate fuel production. Vegetable oils are the viable alternate form of non-polluted, renewable fuel to diesel engines. In this work, the non-edible oil, neem (Azadirachta indica) was used to produce biodiesel by a two step transesterification process. The fuel properties of the biodiesel thus produced were determined by standard methods. It is further tested in a single cylinder diesel engine by mixing with petroleum diesel in various percentages. The brake thermal efficiency (BTE) and specific fuel consumption (SFC) of the engine running with biodiesel blends (10-50%) were compared with the petroleum diesel. The results have shown that the performance of the diesel engine was similar as that of normal diesel and thus the use of biodiesel in diesel engine is viable.

M. Mathiyazhagan; T. Elango; T. Senthilkumar; A. Ganapathi

2013-01-01T23:59:59.000Z

475

The piston dynamics under knock situation of diesel dual fuel engine: a numerical study  

Science Journals Connector (OSTI)

A compression ignition engine fueled by natural gas or Diesel Dual Fuel (DDF) engine is a promising engine for the future of a high oil price. Unfortunately, the DDF engine knocks easily: this leads to damage of pistons. So, the understanding of the ... Keywords: diesel dual fuel engine, knock, mixed-lubrication, modelling, piston secondary motion, simulation

Krisada Wannatong; Somchai Chanchaona; Surachai Sanitjai

2007-01-01T23:59:59.000Z

476

Effect of EGR contamination of diesel engine oil on wear.  

SciTech Connect

Exhaust gas recirculation (EGR) is one of the effective means to reduce the NO{sub X} emission from diesel engines. Returning exhaust product to the diesel engine combustion chamber accelerated the degradation of the lubricant engine oil, primarily by increasing the total acid number (TAN) as well as the soot content and, consequently, the viscosity. These oil degradation mechanisms were observed in engine oil exposed to EGR during a standard Cummins M-l 1 diesel engine test. Four-ball wear tests with M-50 balls showed that, although the used oils slightly decrease the friction coefficients, they increased the ball wear by two orders of magnitude when compared to tests with clean oil. Wear occurred primarily by an abrasive mechanism, but in oil with the highest soot loading of 12%, scuffing and soot particle embedment were also observed. Laboratory wear tests showed a linear correlation with the TAN, while the crosshead wear during the engine test was proportional to the soot content.

Ajayi, O. O.; Erdemir, A.; Fenske, G. R.; Aldajah, S.; Goldblatt, I. L.; Energy Systems; United Arab Emirates Univ.; BP-Global Lubricants Technology

2007-09-01T23:59:59.000Z

477

Effect of biodiesel fuels on diesel engine emissions  

Science Journals Connector (OSTI)

The call for the use of biofuels which is being made by most governments following international energy policies is presently finding some resistance from car and components manufacturing companies, private users and local administrations. This opposition makes it more difficult to reach the targets of increased shares of use of biofuels in internal combustion engines. One of the reasons for this resistance is a certain lack of knowledge about the effect of biofuels on engine emissions. This paper collects and analyzes the body of work written mainly in scientific journals about diesel engine emissions when using biodiesel fuels as opposed to conventional diesel fuels. Since the basis for comparison is to maintain engine performance, the first section is dedicated to the effect of biodiesel fuel on engine power, fuel consumption and thermal efficiency. The highest consensus lies in an increase in fuel consumption in approximate proportion to the loss of heating value. In the subsequent sections, the engine emissions from biodiesel and diesel fuels are compared, paying special attention to the most concerning emissions: nitric oxides and particulate matter, the latter not only in mass and composition but also in size distributions. In this case the highest consensus was found in the sharp reduction in particulate emissions.

Magín Lapuerta; Octavio Armas; José Rodríguez-Fernández

2008-01-01T23:59:59.000Z

478

Optimization of combustion bowl geometry for the operation of kapok biodiesel – Diesel blends in a stationary diesel engine  

Science Journals Connector (OSTI)

Abstract The purpose of this research work is to optimize the combustion bowl geometry of a single cylinder stationary diesel engine for the effective operation of KME (kapok methyl ester) – diesel blends. Considering that the reported design modification would render the benefit of adaptation of higher blends of KME, in this study, two different combustion chamber geometries such as TRCC (trapezoidal combustion chamber) and TCC (toroidal combustion chamber) were chosen in addition to the convention design of HCC (hemispherical combustion chamber). In the experimental investigation, suitable blends such as B25 (25% KME + 75% diesel), B50 (50% KME + 50% diesel), B75 (75% KME + 25% diesel) and B100 (100% KME) were tested in a diesel engine with various combustion chamber geometries as mentioned above. Based on the results obtained from this study, TCC was shown to exhibit better performance and emission than TRCC and HCC for all test blends. Further, when compared to diesel, B25 and B50 were found to be the optimum blends with HCC and TCC, respectively, while TRCC seldom evinced better engine characteristics for any of the blends. Categorically, B50 showed a 5.2% increase in BTE (brake thermal efficiency) than diesel with TCC, whereas emissions such as CO (carbon monoxide) and smoke were reduced by 15.7% and 7.8%, respectively, with a comparable NOX (nitrogen oxides) emission with diesel. Similarly, combustion for B50 with TCC was found to be better than diesel, manifesting an increase in maximum heat release rate that that of diesel. Conclusively, from the experimental study, TCC was recognized as an ideal choice of combustion chamber design for the operation of blends up to B50 in a diesel engine.

S. Vedharaj; R. Vallinayagam; W.M. Yang; C.G. Saravanan; P.S. Lee

2015-01-01T23:59:59.000Z

479

Optimization of an Irreversible Diesel Cycle: Experimental Results of a Ceramic Coated Indirect-Injection Supercharged Diesel Engine  

Science Journals Connector (OSTI)

Technical Education Faculty and Department of Mechanical Engineering, Sakarya University, Esentepe 54187, Sakarya, Turkey, and Maritime Faculty, Marine Engineering, Istanbul Technical University, Tuzla, Turkey ... Effects of a ceramic coating on performance and exhaust emissions in the LHR engine have been compared to those obtained from the standard (STD) diesel engine based on the comparison of the STD and the LHR engines for identical airflow and brake mean effective pressure. ... Gataowski, J. A. Evaluation of a selectively-cooled single-cylinder 0.5-L Diesel engine; SAE paper No. 900693, Society of Automotive Engineers: Warrendale, PA, 1990. ...

A. Parlak; H. Yasar; H. S. Soyhan; C. Deniz

2008-04-25T23:59:59.000Z

480

Modeling Pollutant Emissions of Diesel Engine based on Kriging Models: a  

E-Print Network (OSTI)

Modeling Pollutant Emissions of Diesel Engine based on Kriging Models: a Comparison between problems, modelling errors, Automotive emissions, Diesel engines 1. INTRODUCTION The automotive industry.denis-vidal@math.univ-lille1.fr, ghislaine.joly-blanchard@utc.fr) Abstract: In order to optimize the performance of a diesel

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "heavy-duty diesel engines" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Free-Piston Diesel Engine Timing and Control { Towards Electronic Cam-and Crankshaft  

E-Print Network (OSTI)

replaces the crankshaft of the traditional diesel engine with a power tur- bine to convert energy from, combining a diesel process with a freely moving piston in the cylinder and a power turbine. Engines MW (net power) test cylinder built by Kv rner ASA. In contrast to the original free-piston diesel

Johansen, Tor Arne

482

Investigation of Biodiesel–Diesel Fuel Blends on Combustion Characteristics in a Light-Duty Diesel Engine Using OpenFOAM  

Science Journals Connector (OSTI)

Investigation of Biodiesel–Diesel Fuel Blends on Combustion Characteristics in a Light-Duty Diesel Engine Using OpenFOAM ... (1) In addition, biodiesel can be used in existing compression ignition (CI) or diesel engines with minimal or no modifications because its physicochemical characteristics are very similar to those of fossil diesel. ... However, when CME, PME, and SME are blended with 50 vol % of diesel fuel, the general trend as discussed above is not reproduced. ...

Harun Mohamed Ismail; Hoon Kiat Ng; Suyin Gan; Xinwei Cheng; Tommaso Lucchini

2012-11-12T23:59:59.000Z

483

Natural gas fueling of a Catepillar 3406 diesel engine  

SciTech Connect

This paper reports on a Caterpillar 3406 turbocharged diesel engine which was converted to operate in a natural gas with diesel pilot ignition mode and was evaluated for performance and emission characteristics for both diesel and natural gas operation. Full-load power was achieved with natural gas fueling without knock. Similar fuel efficiencies were obtained with natural gas fueling at high loads, but efficiencies were lower for low loads. Bosch smoke numbers were reduced by over 50 percent with natural gas fueling for all cases investigated. NO[sub x] emissions were found to be lower at low loads and at high speeds under high load. CO emissions were significantly increased for natural gas fueling while CO[sub 2] concentrations in the exhaust were reduced for natural gas fueling.

Doughty, G.E.; Bell, S.R.; Midkiff, K.C. (Dept. of Mechanical Engineering, Univ. of Alabama, Tuscaloosa, AL (United States))

1992-07-01T23:59:59.000Z

484

Comparison of blends of conventional diesel fuel and CRBO containing high levels of FFA in a DI diesel engine  

Science Journals Connector (OSTI)

This work attempts to analyse the ability of high free fatty acid (FFA) crude rice bran oil (CRBO) in replacing diesel partially in a compression ignition (CI) engine. It was observed that the delay period and the maximum rate of pressure rise for CRBO blends are lower than diesel and is almost inversely proportional to FFA content. Maximum heat release rate for CRBO blends are lower and occur earlier than that of diesel. CRBO blends require longer duration to release 90% of heat than diesel and it decreases with increase in FFA content of CRBO. When operating with CRBO blends, all emission parameters were decreased significantly with a marginal increase in CO emission than that of diesel without affecting the brake thermal efficiency of the engine. It is concluded that higher FFA of CRBO blends does not inhibit its ability to be utilised as a fuel in CI engines.

S. Saravanan; G. Lakshmi Narayana Rao; S. Sampath; G. Nagarajan

2012-01-01T23:59:59.000Z

485

Steam bottoming cycle for an adiabatic diesel engine  

SciTech Connect

A study of steam bottoming cycles using adiabatic diesel engine exhaust heat projected substantial performance and economic benefits for long haul trucks. A parametric analysis of steam cycle and system component variables, system cost, size and performance was conducted. An 811 K/6.90 MPa state-of-the-art reciprocating expander steam system with a monotube boiler and radiator core condenser was selected for preliminary design. When applied to a NASA specified turbo-charged adiabatic diesel the bottoming system increased the diesel output by almost 18%. In a comparison of the costs of the diesel with bottoming system (TC/B) and a NASA specified turbocompound adiabatic diesel with after-cooling with the same total output, the annual fuel savings less the added maintenance cost was determined to cover the increased initial cost of the TC/B system in a payback period of 2.3 years. Also during this program steam bottoming system freeze protection strategies were developed, technological advances required for improved system reliability were considered and the cost and performance of advanced systems were evaluated.

Poulin, E.; Demler, R.; Krepchin, I.; Walker, D.

1984-03-01T23:59:59.000Z

486

Application of Artificial Intelligence Methods for the Diagnosis of Marine Diesel Engines  

Science Journals Connector (OSTI)

The paper presents a diagnostic system for marine diesel engine based on an expert system model. The ... identified. The basic knowledge related to the diesel diagnostic was undertaken from experts and diagnostic...

Adam Charchalis; Rafa? Pawletko

2011-01-01T23:59:59.000Z

487

A diesel engine study of conventional and alternative diesel and jet fuels: Ignition and emissions characteristics  

Science Journals Connector (OSTI)

Abstract Measurements of ignition delay, CO and NO emissions, and fuel consumption were carried out in a light-duty single-cylinder direct-injection diesel engine for operation with petroleum and alternative hydroprocessed and Fischer–Tropsch diesel and jet fuels. Ignition measurements carried out for a fixed engine speed and injection timing quantify the decrease in in-cylinder ignition delay with increasing derived cetane number (DCN) over a range of DCN relevant to diesel engine operation (DCN = 40–80) and show no discernible dependence of ignition delay on other fuel properties. Brake specific fuel consumption (BSFC) was found to decrease with increasing DCN with strong correlation due to a reduction in ignition time for fixed-injection-timed operation. Brake specific CO emissions were also found to decrease with increasing DCN due to increased time provided for CO burn out due to earlier ignition. Brake specific NO emissions were found to decrease with increasing hydrogen-to-carbon (H/C) ratio, due to the lower peak combustion temperatures and thermal \\{NOx\\} occurring for fuels with higher H/C.

Sandeep Gowdagiri; Xander M. Cesari; Mingdi Huang; Matthew A. Oehlschlaeger

2014-01-01T23:59:59.000Z

488

Exhaust Emissions and Combustion Characteristics of a Direct Injection (DI) Diesel Engine Fueled with Methanol?Diesel Fuel Blends at Different Injection Timings  

Science Journals Connector (OSTI)

Exhaust Emissions and Combustion Characteristics of a Direct Injection (DI) Diesel Engine Fueled with Methanol?Diesel Fuel Blends at Different Injection Timings ... Because of their fuel economy and high reliability, compression-ignition (CI) engines known as diesel engines have been penetrating a number of markets around the world. ...

Mustafa Canakci; Cenk Sayin; Metin Gumus

2008-09-27T23:59:59.000Z

489

Effect of n-Butanol Blending with a Blend of Diesel and Biodiesel on Performance and Exhaust Emissions of a Diesel Engine  

Science Journals Connector (OSTI)

Effect of n-Butanol Blending with a Blend of Diesel and Biodiesel on Performance and Exhaust Emissions of a Diesel Engine ... Mechanical Engineering, Batman University, Batman 72100, Turkey ... Diesel engines are widely used for transportation, energy production, and agricultural and industrial applications because of their high fuel conversion efficiencies and durability. ...

S?ehmus Altun; Cengiz O?ner; Fevzi Yas?ar; Hamit Adin

2011-06-22T23:59:59.000Z

490

Demonstration of Air-Power-Assist (APA) Engine Technology for...  

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

Combustion and Direct Energy Recovery in Heavy Duty Application Demonstration of Air-Power-Assist (APA) Engine Technology for Clean Combustion and Direct Energy Recovery in...

491

Overview of the DOE Advanced Combustion Engine R&D  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

& Non-Carbon) Electricity (Conventional & Renewable Sources) Improve Fuel Economy Reduce GHG Emissions Displace Petroleum IC Engine and Transmission Advances Light & Heavy-Duty...

492

Heavy Truck Engine Development & HECC | Department of Energy  

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

merit08zhang.pdf More Documents & Publications Heavy-Duty Engine Combustion Optimization for High Thermal Efficiency Targeting EPA 2010 Emissions High Efficiency Clean...

493

Oxygen Reactivity of Devolatilized Diesel Engine Particulates from Conventional and Biodiesel Fuels  

Science Journals Connector (OSTI)

Oxygen Reactivity of Devolatilized Diesel Engine Particulates from Conventional and Biodiesel Fuels ... Abatement of diesel particulates has led to an overall decrease in the fuel efficiency of diesel engines, and overcoming these losses has been one of the more challenging problems in exhaust aftertreatment. ... (16-18) Establishing a general physical basis for modeling diesel particulate oxidation is especially challenging because of the large variations in microscopic structure that it can have. ...

Andrea Strzelec; Todd J. Toops; C. Stuart Daw

2013-06-10T23:59:59.000Z

494

Prediction of the Effects of Ethanol-Diesel Fuel Blends on Diesel Engine Performance Characteristics, Combustion, Exhaust Emissions, and Cost  

Science Journals Connector (OSTI)

Bilgin et al.’s and ?ahin’s experimental studies which have been used in comparisons with numerical results of the present model have been performed in a single cylinder diesel engine at Karadeniz Technical University, Engineering Faculty Mechanical Engineering Department Internal Combustion Engines Laboratory. ... Durgun, O. A practical method for calculation engine cycles Union of Chambers of Turkish Engineers and Architects, Chamber of Mech. ... Dieselhols (blends of diesels, biodiesels, and alcohols) have received considerable attention because of their low emission of CO2. ...

Z. ?ahin; O. Durgun

2009-02-10T23:59:59.000Z

495

Coal-fueled diesel technology development: Nozzle development for coal-fueled diesel engines  

SciTech Connect

Direct injection of a micronized coal water mixture fuel into the combustion chambers of a diesel engine requires atomizing an abrasive slurry fuel with accurately sized orifices. Five injector orifice materials were evaluated: diamond compacts, chemical vapor deposited diamond tubes, thermally stabilized diamond, tungsten carbide with cobalt binder, and tungsten carbide with nickel binder with brazed and mechanically mounted orifice inserts. Nozzle bodies were fabricated of Armco 17-4 precipitation hardening stainless steel and Stellite 6B in order to withstand cyclic injection pressures and elevated temperatures. Based on a total of approximately 200 cylinder hours of engine operation with coal water mixture fuel diamond compacts were chosen for the orifice material.

Johnson, R.N.; Lee, M.; White, R.A.

1994-01-01T23:59:59.000Z

496

Instantaneous crankshaft torsional deformation during turbocharged diesel engine operation  

Science Journals Connector (OSTI)

An experimentally validated diesel engine code is used to study the crankshaft torsional deformations originating in the difference between instantaneous engine and load torques. The analysis aims in studying the phenomena under critical conditions, namely operation when one cylinder malfunctions ('open valves' or motoring situation) as well as during transient conditions. A detailed crankshaft torsional model is formulated; this takes into account cylinder gas, inertia, friction, load and stiffness and damping torques. Details are provided concerning the underlying mechanism of the crankshaft torsional deformations, which can assume significant values depending on the specific configuration, being important for safe engine operation.

E.G. Giakoumis; I.A. Dodoulas; C.D. Rakopoulos

2010-01-01T23:59:59.000Z

497

Dual Fuel Diesel Engine Operation Using H2. Effect on Particulate Emissions  

Science Journals Connector (OSTI)

Dual Fuel Diesel Engine Operation Using H2. ... School of Engineering, Mechanical and Manufacturing Engineering, The University of Birmingham, Birmingham B15 2TT, United Kingdom, Universidad de Castilla?La Mancha, Edificio Politecnico, Escuela Tecnica Superior de Ingenieros Industriales, Avda. ... In diesel engines, the reduction of particulate emissions must be achieved in conjunction with the reduction of NOx emissions. ...

A. Tsolakis; J. J. Hernandez; A. Megaritis; M. Crampton

2005-01-11T23:59:59.000Z

498

IMPACT OF LOW-EMISSION DIESEL ENGINES ON UNDERGROUND MINE AIR QUALITY  

E-Print Network (OSTI)

1 IMPACT OF LOW-EMISSION DIESEL ENGINES ON UNDERGROUND MINE AIR QUALITY Susan T. Bagley1, Winthrop-1295 2 Department of Mechanical Engineering, Center for Diesel Research, University of Minnesota, 111 Church St, S.E., Minneapolis, MN 55455 3 Department of Mechanical Engineering and Engineering Mechanics

Minnesota, University of

499

Performance Evaluation of Fuel Blends Containing Croton Oil, Butanol, and Diesel in a Compression Ignition Engine  

Science Journals Connector (OSTI)

† Department of Mechanical Engineering, Tshwane University of Technology, Private Bag X680, Pretoria 0001, South Africa ... (2) The use of vegetable oils in diesel engines is as old as the diesel engine itself. ... The results indicate a general increase in NOx emissions as the load increases at a steady engine speed. ...

Frank Lujaji; Akos Bereczky; Makame Mbarawa

2010-07-15T23:59:59.000Z

500

Emissions and efficiency of agricultural diesels using low-proof ethanol as supplement fuel. [Tractor engines  

SciTech Connect

Experimental investigations were made to evaluate the potential of using low-proof ethanol to supplement diesel fuel in agricultural engines. Fumigation, mechanical emulsification, and chemical emulsifiers were used to introduce a significant amount of alcohol with diesel fuel for engine operation. A total of five diesel tractor engines were tested using each of the fuel systems. Exhaust products and fuel usage were determined at various engine speed/load conditions. 5 references, 12 figures, 14 tables.

Allsup, J.R.; Clingenpeel, J.M.

1984-01-01T23:59:59.000Z