Abstract—In this paper Computational Fluid Dynamics (CFD) analysis has been carried out to study the flow characteristics of methane and air in the existing carburetor designed for a small capacity two stroke S.I engine. Then based upon the results obtained from the above analysis a new prototype carburetor having two gas inlets was designed. Further analysis was then performed on the prototype carburetor to study the effect of using two fuel inlets on the air-fuel ratio. The results of the simulation shows that a two hole carburetor give better fuel distribution characteristics than the existing carburetor.

Index Terms—CFD, Nozzle, Carburetor

Cite: Harshwardhan Sharma, Satyendra Singh, and Ravi Goe, "CFD Analysis of the Natural Gas Based Carburetor for a Two Stroke Spark Ignition Engine," International Journal of Mechanical Engineering and Robotics Research, Special Issue, Vol. 1, No. 1, pp. 82-88, January 2014.