A Parametric Study for Optimization of Gas Injector Orientation and Its Effect on Duel Fuel Engine Using CNG as Fuel

摘要

The expansion and explore of injection system has always been influenced by the availability and the form of fuel. This research paper is about the revise of the injection nozzle effect of compressed natural gas engine. In this paper study and replicate different location of sequential injection nozzle at different locations using Computational Fluid Dynamics software to find the best air and fuel mixing in the combustion chamber of the engine. The other effect of the Modified injection nozzle is the velocities of the fuel in combustion chamber that can be determine using the software. The length of bore and stroke of the engine is base on the actual diesel engine and been model using Gambit. The air and fuel mixing is very good and better compare with the original injection nozzle. The velocity of fuel in combustion chamber is the highest compare with other design. A methodology for optimization of gas injector orientation for better thermal efficiency is emerged from this study.