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Influencing Parameters of Brake Fuel Conversion Efficiency with Diesel / Gasoline Operation in a Medium-Duty Diesel Engine
Technical Paper
2013-01-0273
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Research on dual-fuel engine systems is regaining interest as advances in combustion reveal enabling features for attaining high efficiencies. Although this movement is manifested by development of advanced modes of combustion (e.g., reactivity controlled compression ignition combustion, or RCCI), the possibility of gasoline / diesel conventional combustion exists, which is characterized by premixed gasoline and direct-injected diesel fuel at conventional diesel injection timing. This study evaluates the effects of operating parameter on fuel conversion efficiency for gasoline / diesel conventional combustion in a medium duty diesel engine. Through adjustment of gasoline ratio (mass basis), injection timing and rail pressure (with adjustments to diesel fuel quantity to hold torque constant), the combustion, performance and emissions are studied. The results show generally decreasing brake fuel conversion efficiency as gasoline ratio increases, by between no change to 1.4% (relative to pure diesel fuel operation) at medium and high loads with gasoline ratio increasing from 0 to 0.5 and 0 to 0.33 respectively, and by between 2.0% to 4.0% (relative to pure diesel fuel operation) at low load with gasoline ratio increasing from 0 to 0.5. Analysis focuses on the effects combustion, work, exhaust, and heat transfer losses have on the changes to brake fuel conversion efficiency. At dual-fuel operation high combustion and heat transfer losses are mainly responsible for low fuel conversion efficiency, while low exhaust and friction losses are beneficial for fuel conversion efficiency. At low load, the fraction of combustion loss in the fuel energy delivery rate (i.e., combustion inefficiency) increases from 0.7% at pure diesel fuel operation to 8.7% with 0.27 gasoline ratio and to 15.9% with 0.5 gasoline ratio; these increases are attributed to overly lean mixture and prolonged combustion. At medium and high loads, the higher temperature and pressure in dual-fuel operation can explain the higher heat transfer loss.
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Sun, J., Bittle, J., and Jacobs, T., "Influencing Parameters of Brake Fuel Conversion Efficiency with Diesel / Gasoline Operation in a Medium-Duty Diesel Engine," SAE Technical Paper 2013-01-0273, 2013, https://doi.org/10.4271/2013-01-0273.Also In
References
- Alperstein , M. , Swim , W. , and Schweitzer , P. Fumigation Kills Smoke - Improves Diesel Performance SAE Technical Paper 580058 1958 10.4271/580058
- Kouremenos , D. A. , Rakopoulos , C. D. , Kotsiopoulos , P. Comparative Performance and Emission Studies for Vaporized Diesel Fuel and Gasoline as Supplements in Swirl-Chamber Diesel Engines Energy 15 12 1153 1160 1990
- Yoshida , K. , Shoji , H. , and Tanaka , H. Study on Combustion and Exhaust Gas Emission Characteristics of Lean Gasoline-Air Mixture Ignited by Diesel Fuel Direct Injection SAE Technical Paper 982482 1998 10.4271/982482
- Sahin Z. , Durgun , O. High speed direct injection (DI) light-fuel (gasoline) fumigated vehicle diesel engine Fuel 86 2007 388 399
- Sahin Z. , Durgun , O. , Bayram , C. Experimental investigation of gasoline fumigation in a single cylinder direct injection (DI) diesel engine Energy 33 2008 1298 1310
- Sahin , Z. , Durgun , O. , Bayram , C. Experimental investigation of gasoline fumigation in a turbocharged IDI diesel engine Fuel 95 2012 113 121
- Kim , D. , Kim , M. , and Lee , C. Effect of Premixed Gasoline Fuel on the Combustion Characteristics of Compression Ignition Engine Energy & Fuels 2004 18 1213 1219
- Himabindu , M. and Mahalakshmi , N. Experimental Studies on Dual Fuel Homogeneous Charge Diesel Combustion Engines to Improve Emission Characteristics SAE Technical Paper 2007-01-4065 2007 10.4271/2007-01-4065
- Curran , S. , Prikhodko , V. , Cho , K. , Sluder , C. et al. In-Cylinder Fuel Blending of Gasoline/Diesel for Improved Efficiency and Lowest Possible Emissions on a Multi-Cylinder Light-Duty Diesel Engine SAE Technical Paper 2010-01-2206 2010 10.4271/2010-01-2206
- Dempsey , A. and Reitz , R. Computational Optimization of Reactivity Controlled Compression Ignition in a Heavy-Duty Engine with Ultra Low Compression Ratio SAE Int. J. Engines 4 2 2222 2239 2011 10.4271/2011-24-0015
- Hanson , R. , Kokjohn , S. , Splitter , D. , and Reitz , R. An Experimental Investigation of Fuel Reactivity Controlled PCCI Combustion in a Heavy-Duty Engine SAE Int. J. Engines 3 1 700 716 2010 10.4271/2010-01-0864
- Hanson , R. , Curran , S. , Wagner , R. , Kokjohn , S. et al. Piston Bowl Optimization for RCCI Combustion in a Light-Duty Multi-Cylinder Engine SAE Int. J. Engines 5 2 286 299 2012 10.4271/2012-01-0380
- Kokjohn , S. , Hanson , R. , Splitter , D. , Kaddatz , J. et al. Fuel Reactivity Controlled Compression Ignition (RCCI) Combustion in Light- and Heavy-Duty Engines SAE Int. J. Engines 4 1 360 374 2011 10.4271/2011-01-0357
- Leermakers , C. , Van den Berge , B. , Luijten , C. , Somers , L. et al. Gasoline-Diesel Dual Fuel: Effect of Injection Timing and Fuel Balance SAE Technical Paper 2011-01-2437 2011 10.4271/2011-01-2437
- Curran , S. et al. Drive Cycle Efficiency and Emissions Estimates for Reactivity Controlled Compression Ignition in a Multi-Cylinder Light-Duty Diesel Engine Proceedings of the 2011 Internal Combustion Engine Division Fall Technical Conference Morgantown, West Virginia USA October 2 5 2011 ICEF2011-60227
- Pohlkamp , K. and Reitz , R. Reactivity Controlled Compression Ignition (RCCI) in a Single-Cylinder Air-Cooled HSDI Diesel Engine SAE Technical Paper 2012-32-0074 2012 10.4271/2012-32-0074
- Bittle et al. Cylinder-to-Cylinder Variation Sources in Diesel Low Temperature Combustion and the Influence They Have on Emissions Spring Technical Meeting of the Central States Section of the Combustion Institute April 22 24 2012
- Lancaster , D. , Krieger , R. , and Lienesch , J. Measurement and Analysis of Engine Pressure Data SAE Technical Paper 750026 1975 10.4271/750026
- Foster , D. 1985 An overview of zero-dimensional thermodynamic models for IC engine data analysis SAE International Fall Fuels and Lubricants Meeting and Exhibition Tulsa, Oklahoma
- Depcik , C. , Jacobs , T. , Hagena , J. , and Assanis , D. 2007 Instructional use of a single-zone, premixed charge, spark-ignition engine heat release simulation International Journal of Mechanical Engineering Education 35 1 1 31
- Heywood , J. Chapter 12. Engine Heat Transfer “ Internal Combustion Engine Fundamentals ” 1988 McGraw-Hill, Inc. New York 0-07-028637-X 1988
- Hanson , R. , Kokjohn , S. , Splitter , D. , and Reitz , R. Fuel Effects on Reactivity Controlled Compression Ignition (RCCI) Combustion at Low Load SAE Int. J. Engines 4 1 394 411 2011 10.4271/2011-01-0361
- Splitter , D. , Hanson , R. , Kokjohn , S. , and Reitz , R. Reactivity Controlled Compression Ignition (RCCI) Heavy-Duty Engine Operation at Mid-and High-Loads with Conventional and Alternative Fuels SAE Technical Paper 2011-01-0363 2011 10.4271/2011-01-0363
- Durgun , O. , Sahin , Z. Theoretical investigation of heat balance in direct injection (DI) diesel engines for neat diesel fuel and gasoline fumigation Energy Conversion and Management 50 2009 43 51
- Chase , M.W. Jr. “Journal of Physical and Chemical Reference Data, Monograph No. 9, NIST-JANAF Thermochemical Tables, Fourth Edition” National Institute of Standards and Technology Gaithersburg, Maryland 20899-0001 1998
- Bittle , J. A. , Younger , J. K. , and Jacobs , T. J. Biodiesel Effects on Influencing Parameters of Brake Fuel Conversion Efficiency in a Medium Duty Diesel Engine Journal of Engineering for Gas Turbines and Power 132 2010
- Heywood , J. Chapter 13. Engine Friction and Lubrication “ Internal Combustion Engine Fundamentals ” 1988 McGraw-Hill, Inc. New York 0-07-028637-X 1988
- Hendricks , T. and Ghandhi , J. Estimation of Surface Heat Flux in IC Engines Using Temperature Measurements: Processing Code Effects SAE Int. J. Engines 5 3 1268 1285 2012 10.4271/2012-01-1208
- Hohenberg , G. Advanced Approaches for Heat Transfer Calculations SAE Technical Paper 790825 1979 10.4271/790825