CFD analysis of flow through venturi of carburetor

Abstract

Modern passenger vehicles with gasoline engines are provided with different compensating devices for fuel air mixture supply. Even then there is a high fuel consumption because of many factors. One of the important factors that affect the fuel consumption is that design of carburetor. The venturi of the carburetor is important that provides a necessary pressure drop in the carburetor device. Since different SI engine alternative fuels such as LPG, CNG are used in the present day vehicles to reduce the pollution and fuel consumption. Still for a better economy and uniform fuel air supply there is a need to design the carburetor with an effective analytical tool or software. In this work three parameters namely pressure drop and fuel discharge nozzle angle of the carburetor will be analyzed using computational fluid dynamics. For this analysis CFD will be done using 2 softwares namely GAMBIT and FLUENT. The results obtained from the softwares will be analyzed for optimum design of a carburetor.