Investigation of the Effect of Adding Meshes with CNG Mixer Engine Behavior and Emissions

Abstract

Hard starting and explosion (backfire) problems are the complaints of the taxi drivers operated by CNG. To overcome such
problems, this study, to enhance the mixing in Throttle Body by Mixer. The most problems of (Air –CNG) mixture is to be nonhomogenous mixture before entering the engine to burning and that caused engine misfire and engine backfire. To prove that the ANSYS program used to observe and to realize the flow behaviour of  Air-CNG )mixture and to improve the mixture homogenous mixture The turbulent flow has created in mixer due touse meshes in differ sizes toto select the best  shape, the behavior of flow has been checked by ANSYSthen it was validated on vehicle A5 to show the real performance of the engine. Non-homogenous