Redesigning of Piston Head and Air Flow through the Combustion Chamber Using CFD
Diesel and petrol engines are becoming more important for transport and generating power for various applications. The reduction of fuel consumption and conservation of fuel are vital to reduce pollution from emissions of IC engines. The research findings specific to petrol engines reveals that there were lot of experiments conducted in the recent past to achieve a better thermal efficiency and to reduce emissions without affecting the fuel consumption. The process of Air-fuel mixing is very important and complex in nature. The process of Air-fuel mixing either at carburetor or in the combustion chamber (in the case of direct injection) depends on the injector design, chamber design and piston crown shapes. In this paper, an attempt is made to investigate the geometry of piston crown in the existing vehicles specific to two wheelers and its influence on turbulences created inside the combustion chamber. Computer Aided Design (CAD) and Computational Fluid Dynamics (CFD) were used to model and analyze the proposed piston crown in order to improve the air flow inside the combustion chamber by causing the turbulence flow of air to match the prevailing Bharat Stage (BS) VI norms.