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Development of the Stratified Charge and Stable Combustion Method in DI Gasoline Engines
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Abstract
The new combustion method in DISC engine has been developed. It has a double structure combustion chamber characterized as ‘Caldera’. The chamber is constructed by a center cavity for the purpose of forming a stable mixture around a spark plug electrode, and by an outer cavity which has a role of a main chamber.
This method makes possible a perfect un-throttling operation, and a fuel consumption equal to a diesel engine is achieved. With regard to an out-put of DISC engine, a stoichmetric combustion and a high torque are achieved by controling a fuel injection timing with an electro-magnetic injection system device. With regard to emission regulations, a heavy EGR include residual gas decreases greatly NOx and HC emissions simultaneously, and which suggests a possibility to achieve LEV/ULEV regulations.
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Kono, S., "Development of the Stratified Charge and Stable Combustion Method in DI Gasoline Engines," SAE Technical Paper 950688, 1995, https://doi.org/10.4271/950688.Also In
References
- Dictionary of Automotive Engineering, in Japanese, JSAE, P.61.
- Lewis J.M.: ‘UPS Multifuel Stratified Charge Engine Development Program - Field Test,’ SAE Paper No.860067, 1986.
- Schapertons H., et.al,: ‘VW's Gasoline Direct Injection (GDI) Research Engine,’ SAE Paper No.910054, 1991.
- Kono S.,: ‘Action between Spray and In-Cylinder Flow in D.I. Engines,’ in Japanese, JSAE Vol.22 No.2, April 1991.
- Kono S., et.al,: ‘Development of Stratified Charge and Stable Combustion in D.I. Engines,’ in Japanese, JSAE Vol.24 No.3, July, 1993.
- Amsden A.A., et.al, ‘KIVA: A Computer Program for Two-and Three-Dimensional Fluid Flows with Chemical Reactions and Fuel Sprays,’ Los Alamos National Laboratory report LA-10245-MS, 1985.