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Ethanol Direct Injection on Turbocharged SI Engines - Potential and Challenges
Technical Paper
2007-01-1408
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In the past application of alternative fuels was mostly concentrated to special markets - e.g. for ethanol and ethanol blends Brazil or Sweden. Now an increasing sensitivity towards dependency on crude oil significantly enhances the interest in alternative fuels. With spark ignited engines, ethanol and gasoline / ethanol blends are the most promising alternative fuels - besides CNG. The high octane number of ethanol and the resulting excellent knock performance gives significant benefits, especially with highly boosted engines.
However, the evaporation characteristics of ethanol result in challenges regarding cold start and oil dilution with GDI application.
This paper deals with investigations on a turbocharged DI engine operated on ethanol fuel in order to improve challenges of ethanol fuel, such as oil dilution and cold start.
Cold start can be improved by injecting fuel late in the compression stroke (high pressure start) based on a refined engine design and operation strategies.
Oil dilution has to be deeply investigated on a transparent engine in order to optimize charge motion, spray pattern and penetration.
The paper describes the systematic approach of optimizing a DI /TCI spark ignition engine for ethanol fuel with respect to cold start potential and avoiding oil dilution especially during high load operation.
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Citation
Kapus, P., Fuerhapter, A., Fuchs, H., and Fraidl, G., "Ethanol Direct Injection on Turbocharged SI Engines - Potential and Challenges," SAE Technical Paper 2007-01-1408, 2007, https://doi.org/10.4271/2007-01-1408.Also In
References
- Kapus, P. Zelenka, P. Development and vehicle application of a multi-fuel DI-alcohol engine XXIV. FISITA Congress 7 - 11 June 1992 IMechE London
- Cartellieri, W. Chmela, F.G. Kapus, P. Tatschl, R.M. Mechanisms leading to stable and efficient combustion in lean burn gas engines The Third International Symposium on diagnostics and modeling of combustion in internal combustion engines July 11 - 14 1994 Yokohama, Japan
- Cartellieri, W Kapus, P. ULEV Potential of a DI/TCI Diesel passenger car engine operated on Dimethylether SAE Alternative Fuels Congress 06. - 08. December 1995 San Diego
- Bandel, W. Fraidl, G.K. Kapus, P.E. Sikinger, H. Cowland, C.N. The turbocharged GDI engine: boosted synergies for high fuel economy plus ultra-low emission SAE 2006-01-1266
- Quissek, F Zelenka, P. Hulak, K. Kapus, P Cold start performance comparison of alcohol-fueled engines with in-cylinder and port fuel injection SAE 92003 Subzero Engineering Conditions Conference February 3 - 6 1992 Helsinki, Finland
- Barbera, E Hulak, K Quissek, F. Development and optimization of alcohol fueled SI-engines for passenger cars for the Brazilian market SAE: Automotive Industry In Expanding Countries Buenos Aires, Argentina September 3-6 1991
- Fuchs, H. Salzinger, R. 26 9 2000
- Cowland, C. Gutmann, P. Herzog, P.L. Passenger vehicle diesel engines for the U.S. SAE World Congress 2004 08 03 2004 11 03 2004 Detroit