This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Mixture Formation and Combustion Performance in a New Direct-Injection SI V-6 Engine
Annotation ability available
Sector:
Language:
English
Abstract
One advantage of a direct-injection S.I. engine is lower fuel consumption due to the use of lean stratified charge combustion. Another advantage is greater power output resulting from evaporation of the fuel in the cylinder. A critical factor in making the most of these advantages is to achieve optimum mixture formation for both stratified and homogeneous charge combustion.
To achieve the optimum mixture, the new direct-injection S.I. V-6 engine adopts a piston with a shallow bowl, a valve that changes in-cylinder air motion between swirl and tumble by opening and closing one side of separated air intake port, an air intake port that has optimized inward and port angle to induces swirl in the piston bowl, and a CASTING NET injector that injects the hollow cone spray in a deflected pattern toward the spark plug.
Recommended Content
Authors
Citation
Tatsuta, H., Matsumura, M., Yajima, J., and Nishide, H., "Mixture Formation and Combustion Performance in a New Direct-Injection SI V-6 Engine," SAE Technical Paper 981435, 1998, https://doi.org/10.4271/981435.Also In
References
- Naitoh, K. Takagi Y. “Numerical Simulation of the Fuel Mixing Process in a Direct-Injection Gasoline Engine,” Proceedings of the 14th Internal Combustion Engine Symposium Japan 139 143
- Urushihara T. Kakuhou A. Itoh T. Takagi Y. “LIF Visualization of In-cylinder Fuel Mixture Formation in a Direct Injection S.I. Engine,” Proceedings of the 14th Internal Combustion Engine Symposium Japan 523 528
- Takagi Y. Itoh T. Muranaka S. Iiyama A. Iwakiri Y. Urushihara T. Naitoh K. “Simultaneous Attainment of Low Fuel Consumption High Output Power and Low Exhaust Emissions in Direct Injection SI Engines” SAE 980149