This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Effects of Fuel Injection Parameters on Low Temperature Diesel Combustion Stability
Technical Paper
2010-01-0611
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Low temperature diesel combustion (LTC) exhibits ultra low NOx and smoke emissions, but currently it has the problems of increased CO and THC emissions, and higher combustion instability compared to conventional diesel combustion. This study evaluated the effects of fuel injection parameters on combustion stability in a single cylinder research diesel engine running at low and intermediate speeds and loads under LTC operating conditions. The LTC operation was achieved using high rates of EGR.
In this work, the fuel injection timing and injection pressure were varied to investigate their effects on combustion stability at fixed engine speed and total fuel quantity. The cylinder pressure and THC emissions were measured during the tests. The THC emissions and the coefficient of variability of IMEP (CoV(IMEP)) were used to assess combustion stability. The relationship between these two parameters was also evaluated.
Changes to the fuel injection parameters influenced combustion stability and the associated THC emissions. Early injections were considered leading to fuel impingement, which was exacerbated by higher injection pressures. At low loads, combustion stability and THC emissions appeared to be correlated, indicating that unstable combustion was leading to increases in unburned fuel. For the intermediate load conditions, the CoV(IMEP) was low and relatively insensitive to the fuel injection process. However, THC emissions were high and were significantly affected by the changes of the fuel injection parameters.
Authors
Topic
Citation
Cong, S., McTaggart-Cowan, G., and Garner, C., "Effects of Fuel Injection Parameters on Low Temperature Diesel Combustion Stability," SAE Technical Paper 2010-01-0611, 2010, https://doi.org/10.4271/2010-01-0611.Also In
References
- Ogawa H. Li T. Miyamoto N. “Characteristics of Low Temperature and Low Oxygen Diesel Combustion with Ultra-high Exhaust Gas Recirculation” Int. J. Engine Res. 8 2007 365 377
- Yun, H. Sellnau, M. Milovanovic, N. Zuelch, S. “Development of Premixed Low-Temperature Diesel Combustion in a HSDI Diesel Engine,” SAE Technical Paper 2008-01-0639 2008
- Beatrice, C. Avolio, G. Guido, C. “Experimental Analysis of the Operating Parameter Influence on the Application of Low Temperature Combustion in the Modern Diesel Engines,” SAE Technical Paper 2007-01-1839 2007
- Koci, C.P. Ra, Y. Krieger, R. Andrie, M. et al. “Detailed Unburned Hydrocarbon Investigations in a Highly-Dilute Diesel Low Temperature Combustion Regime,” SAE Int. J. Engines 2 1 858 879 2009
- Ekoto, I.W. Colban, W.F. Miles, P.C. Park, S. et al. “Sources of UHC Emissions from a Light-Duty Diesel Engine Operating in a Partially Premixed Combustion Regime,” SAE Int. J. Engines 2 1 1265 1289 2009
- Kashdan, J.T. Anselmi, P. Walter, B. “Advanced Injection Strategies for Controlling Low-Temperature Diesel Combustion and Emissions,” SAE Int. J. Engines 2 1 1835 1856 2009
- Henein, N.A. Kastury, A. Natti, K. Bryzik, W. “Advanced Low Temperature Combustion (ALTC): Diesel Engine Performance, Fuel Economy and Emissions,” SAE Technical Paper 2008-01-0652 2008
- Opat, R. Ra, Y. Gonzalez D., M.A. Krieger, R. et al. “Investigation of Mixing and Temperature Effects on HC/CO Emissions for Highly Dilute Low Temperature Combustion in a Light Duty Diesel Engine,” SAE Technical Paper 2007-01-0193 2007
- Cong S. McTaggart-Cowan G. P. Garner C. P. “The Effects of Exhaust Back Pressure on Conventional and Low Temperature Diesel Combustion” Internal Combustion Engines: Performance, Fuel Economy and Emissions IMechE December 2009
- Cong, S. McTaggart-Cowan, G.P. Garner, C.P. “Measurement of Residual Gas Fraction in a Single Cylinder HSDI Diesel Engine through Skip-firing,” SAE Technical Paper 2009-01-1961 2009
- Heywood J. B. Internal Combustion Engine Fundamentals McGraw-Hill 1988
- Martinez-Martinez, S. Sanchez-Cruz, F.A. Riesco-Avila, J.M. Gallegos-Munoz, A. Aceves S.M. “Liquid Penetration Length in Direct Diesel Fuel Injection” Applied Thermal Engineering 28 2008 1756 1762
- Montajir, R. Tsunemoto, H. Ishitani, H. Koji, T. et al. “A New Combustion Chamber Concept for Low Emissions in Small DI Diesel Engines,” SAE Technical Paper 2001-01-3263 2001