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Optimized Gasoline Direct Injection Engine for the European Market
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Abstract
GDI (Gasoline Direct Injection) engine adopting new combustion control technologies was developed and introduced into Japanese domestic market in August of 1996. In order to extend its application to the European market, various system modifications have been performed. Injectors are located with a smaller angle to the vertical line in order to improve the combustion stability in the higher speed range. A new combustion control method named “two-stage mixing” is adopted to suppress the knock in the low speed range. As a result of this new method, the compression ratio was increased up to 12.5 to 1 while increasing the low-end torque significantly. Taking the high sulfur gasoline in the European market into account, a selective reduction lean-NOx catalyst with improved NOx conversion efficiency was employed. A warm-up catalyst can not be used because the selective reduction lean NOx catalyst requires HC for the NOx reduction. A new method named “two stage combustion” was adopted for the quick warm-up of the under floor three way catalyst located downstream of the lean NOx catalyst. As a result of these modification, European version GDI engine revealed 10 percent higher torque and the 20 percent better fuel economy than the conventional port injection engines, while maintaining the clean exhaust gas that can meet the European Step 2 and the German D3 regulations.
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Noma, K., Iwamoto, Y., Murakami, N., Iida, K. et al., "Optimized Gasoline Direct Injection Engine for the European Market," SAE Technical Paper 980150, 1998, https://doi.org/10.4271/980150.Also In
References
- Kume T. Iwamoto, Y. Iida, K. Murakami, N. Akishino, K. Ando, H. Combustion Control Technologies for Direct Injection SI Engines SAE Paper 960600 1996
- Kiyota, Y. Akishino, K. Ando, H. Combustion Control Technologies for Direct Injection SI Engines 1996
- Ando, H. Combustion Control Technologies for Gasoline Engines IMechE International Seminar on Lean Bum Engines
- Iwamoto, Y. Noma, K. Nakayama, O. Yamauchi, T. Ando, H. Development of Gasoline Direct Injection Engine SAE Paper 970541
- Kiyota, Y. Akishino K. Ando, H. Concept of Lean Combustion by Barrel-Stratification SAE Paper 920678 1992
- Kuwahara, K. Watanabe, T. Takemura, J. Omori, S. Kume, T. Ando, H. Optimization of In-Cylinder Flow and Mixing for a Center-Spark Four-Valve Engine Employing the Concept of Barrel-Stratification SAE Paper 940986 1994
- Ando, H. Noma, K. Iida, K. Nakayama, 0. Yamauchi, T. Mitsubishi GDI Engine - Strategies to meet the European requirements AVL Engine and Environment Conference 1997
- Kuwahara, K. Ueda, K. Ando, H. Mixing Control Strategy for Engine Performance Improvement in a Gasoline Direct Injection Engine SAE Paper 980158 1998
- Ando, H. Takemura, J. Kojina, E. A knock anticipating Strategy Basing on the Real-Time Combustion Mode Analysis SAE Paper 890882 1989
- Miyoshi, N. Matsumoto, S. Katoh, K. Tanaka, T. Harada, J. Takahara, N. Development of New Concept Three Way Catalyst for Automotive Lean-Bum Engines SAE Paper 950809 1995
- Brogan, M. S. Brisley, R. J. Moore, J. S. Clark, A. D. Evaluation of NOx Adsorber Catalysts Systems to Reduce Emissions of Lean Running Gasoline Engines SAE Paper 962045 1996
- Strehlau, W. Kreuzer, T. Leyrer, J. Hori., M. Lox, E. S. Hoffmann, M. New Developments in Lean NOx Catalysis for Gasoline Fueled Passenger Cars in Europe SAE Paper 962047 1996