This content is not included in your SAE MOBILUS subscription, or you are not logged in.
IFP Energies Nouvelles Approach for Dual Fuel Diesel-Gasoline Engines
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 11, 2011 by SAE International in United States
Annotation ability available
Compared to Spark Ignition (SI) engines, Compression Ignition (CI) engines are more efficient because of the higher compression ratios and leaner operation. However, thanks to stoichiometric air fuel ratio, SI engines allow efficient pollutants after treatment, particularly for NOx emissions. In this context, IFP Energies nouvelles (IFPEN) has developed the concept of diesel-gasoline combustion in order to combine the advantages of both fuels and both combustion processes.
Focusing on a passenger car application, experiments have been performed using a modified DI turbocharged small diesel engine (the combustion chamber has been redesigned and port fuel injectors have been added). In-Cylinder Fuel Blending (ICFB) using port-fuel-injection of gasoline and optimized direct injection of diesel was used to control combustion phasing and duration. This modified engine can still run on diesel alone. ICFB mode is considered, either with a lean mixture, or at stoichiometric air-fuel ratio to perform NOx aftertreatment via a 3-way catalyst. The objective is to control the NOx emissions over the whole operating range of the engine, while maintaining attractive fuel efficiency.
In this paper, IFP Energies nouvelles describes the main results of diesel-gasoline combustion, in order to understand what would be the best approach in terms of technological feasibility, fuel efficiency and pollutant emissions. The potential of the dual fuel concept has been investigated on several part load operating conditions, focused on a 2000 rpm engine speed. The operable range of load in ICFB combustion is extended from 7 to 16.5 bar IMEP. BSFC at part load is as low as that of a diesel engine. At higher load, NOx emissions are very low (≺0.5 g/kWh at 10 bar IMEP) and allow lean mixture operation until 14 bar IMEP. Outside of this ICFB operating range, the performance in full diesel mode remains totally acceptable.
CitationDuffour, F., Ternel, C., and Pagot, A., "IFP Energies Nouvelles Approach for Dual Fuel Diesel-Gasoline Engines," SAE Technical Paper 2011-24-0065, 2011, https://doi.org/10.4271/2011-24-0065.
- Splitter, D. Kokjohn, S. Rein, K. Hanson, R. et al. “An Optical Investigation of Ignition Processes in Fuel Reactivity Controlled PCCI Combustion,” SAE Int. J. Engines 3 1 142 162 2010 10.4271/2010-01-0345
- Kokjohn, S. Hanson, R. Splitter, D. Reitz, R. “Experiments and Modeling of Dual-Fuel HCCI and PCCI Combustion Using In-Cylinder Fuel Blending,” SAE Int. J. Engines 2 2 24 39 2010 10.4271/2009-01-2647
- Dishy, A. You, T. Iwashiro, Y. Nakayama, S. et al. “Controlling Combustion and Exhaust Emissions in a Direct-Injection Diesel Engine Dual-Fueled with Natural Gas,” SAE Technical Paper 952436 1995 10.4271/952436
- He, B. Wang, J. Shuai, S. Yan, X. “Homogeneous Charge Combustion and Emissions of Ethanol Ignited by Pilot Diesel on Diesel Engines,” SAE Technical Paper 2004-01-0094 2004 10.4271/2004-01-0094
- Ogawa, H. Miyamoto, N. Li, C. Nakazawa, S. et al. “Low Emission and Knock-Free Combustion with Rich and Lean Biform Mixture in a Dual-Fuel CI Engine with Induced LPG as the Main Fuel,” SAE Technical Paper 2001-01-3502 2001 10.4271/2001-01-3502
- Tomita, E. Kawahara, N. Piao, Z. Yamaguchi, R. “Effects of EGR and Early Injection of Diesel Fuel on Combustion Characteristics and Exhaust Emissions in a Methane Dual Fuel Engine,” SAE Technical Paper 2002-01-2723 2002 10.4271/2002-01-2723
- Namasivayam, A. Crookes, R. Korakianitis, T. Bob-Manuel, K. “Combustion Characteristics of Dual-Fuel Diesel Engine Using Emulsified Bio-Fuel for Pilot Ignition,” SAE Technical Paper 2009-01-0490 2009 10.4271/2009-01-0490
- Bessonette, P. Schleyer, C. Duffy, K. Hardy, W. et al. “Effects of Fuel Property Changes on Heavy-Duty HCCI Combustion,” SAE Technical Paper 2007-01-0191 2007 10.4271/2007-01-0191
- Lewander, C. Johansson, B. Tunestal, P. “Extending the Operating Region of Multi-Cylinder Partially Premixed Combustion using High Octane Number Fuel,” SAE Technical Paper 2011-01-1394 2011 10.4271/2011-01-1394
- Inagaki, K. Fuyuto, T. Nishikawa, K. Nakakita, K. et al. “Dual-Fuel PCI Combustion Controlled by In-Cylinder Stratification of Ignitability,” SAE Technical Paper 2006-01-0028 2006 10.4271/2006-01-0028
- Tamagna, D. Gentili, R. Ra, Y. Reitz, R. “Multidimensional Simulation of the Influence of Fuel Mixture Composition and Injection Timing in Gasoline-Diesel Dual-Fuel Applications,” SAE Technical Paper 2008-01-0031 2008 10.4271/2008-01-0031
- Jiang, H. Wang, J. Shuai, S. “Visualization and Performance Analysis of Gasoline Homogeneous Charge Induced Ignition by Diesel,” SAE Technical Paper 2005-01-0136 2005 10.4271/2005-01-0136
- 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
- Splitter, D. Hanson, R. Kokjohn, S. Reitz, R. “Improving Engine Performance by Optimizing Fuel Reactivity with a Dual fuel PCCI Strategy” THIESEL 2010
- Hanson, R. Kokjohn, S. Splitter, D. 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