This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Increasing a Diesel Engine Power Output by Combustion System Optimization
Technical Paper
2013-01-2530
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Displacement downsize is an exciting technology for IC engines in recent years in order to reduce both toxic emissions and fuel consumption simultaneously. The key point of this technology is to increase power density so that a downsized engine has power output high enough to replace a bigger displacement one. This paper describes a research into the power output enhancement by combustion system optimization. This research work was conducted on a single-cylinder diesel engine with a displacement of 2.8L. The aim of the research is to increase engine power output from current 73kW to 150kW. The power output was firstly boosted to 92kW by virtue of increasing intake pressure, reducing intake flow resistance, optimizing cam profile, modifying fuel injection system and optimizing combustion parameters. As a result, a satisfied heat release pattern was obtained with the achievement of the power target. The power output was then further increased to 150kW by further increasing intake pressure, rising engine speed, further combustion parametric optimization, as well as using an electronic unit pump with a high injection pressure instead of the mechanical pump. After these optimizations the power output reaches to its final target of 150kW. However, the heat release during the late stage of combustion was significantly increased, causing an increase of 70°C in exhaust temperature. Further optimization work is still needed for the combustion system so as to increase heat release in the diffusion combustion period and decrease heat release in the late stage of combustion process.
Recommended Content
Authors
Citation
Li, Y., Cai, Z., Li, Y., Li, Y. et al., "Increasing a Diesel Engine Power Output by Combustion System Optimization," SAE Technical Paper 2013-01-2530, 2013, https://doi.org/10.4271/2013-01-2530.Also In
References
- Hahne Bernd et al. New Diesel Engines for Volkswagen Commercial Vehicle Applications MTZ 71 1 2010
- Langen Peter et al. The New Two-Stage Turbocharged Six-Cylinder Diesel Engine of The BMW 740D MTZ 71 4 2010
- Demark Rüdiger et al. The New Diesel Engine Series by MTZ MTZ 2 2006
- Thirouard , M. and Pacaud , P. Increasing Power Density in HSDI Engines as an Approach for Engine Downsizing SAE Int. J. Engines 3 2 56 71 2010 10.4271/2010-01-1472
- Thirouard , M. , Mendez , S. , Pacaud , P. , Chmielarczyk , V. et al. Potential to Improve Specific Power Using Very High Injection Pressure In HSDI Diesel Engines SAE Technical Paper 2009-01-1524 2009 10.4271/2009-01-1524
- Tatur Marek Future Directions in Engines and Fuels Directions in Engine-Efficiency and Emissions Research Conference (DEER) October 2010 Detroit
- Hirsch , N. and Mekari , M. Advanced Diesel Engine 42% Brake Thermal Efficiency Technology Demonstrators SAE Technical Paper 2011-01-0121 2011 10.4271/2011-01-0121
- Sono , H. , Shibata , M. , Tajima , Y. , Ikeya , K. et al. A Study of High Power Output Diesel Engine with Low Peak Cylinder Pressure SAE Technical Paper 2010-01-1107 2010 10.4271/2010-01-1107
- Pischinger , S. , Schnitzler , J. , Rottmann , M. , Busch , H. et al. Future of Combustion Engines 2006