Browse Publications Technical Papers 2004-32-0006
2004-09-27

Practical Application of Combustion Simulation using CFD for Small Engine of Two-Wheeled Vehicle 2004-32-0006

The combustion simulation based on CFD (Computational Fluid Dynamics) was attempted in order to visualize in-cylinder combustion phenomena of a small displacement, high speed four-stroke SI engine for motorcycle applications. To verify the results of the simulation, the steady state flow in a cylinder, the fuel spray behavior and the flame propagation behavior in an actual engine were measured and compared. The results were that an adequate correlation was confirmed in each phenomenon, proving that the CFD was applicable as a means of visualization.
As the result of the investigation of the combustion system applying this technique, improvements such as the specific fuel consumption and the extension of the lean combustion zone were attained, assuring effectiveness of this technique for actual engine development. This technique has been applied to the development of the world's first four-stroke 50cm3 PGM-FI (Programmed Fuel Injection) engine.

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