Optimization of air intake system for inline-4 diesel engine

Air Intake System is a system that produces fresh and clean air to an engine for combustion process. Insufficient air into the combustion chamber will decrease the engine performance thus decrease power generated by the engine. For this thesis, the objective is to study the effect of pressure drop inside the air intake system. Simulation and experiment methods have been conducted in this study. Air intake system model that had been use in this study is the air intake system of Proton Waja and this study focus on optimization of the air box. Data that have been obtained from simulation analysis was used to fabricate an optimized design of an air box. This air box then will be tested on an experiment test. All the data from simulation and experiment testing were collected and analyze. From the analysis, by adding guide vane and bell mouth on a standard air box, the pressure drop can be decreased thus increase the air flow performance inside the air intake system. In further study, it was recommended to test the optimized air box on Proton Waja to see the actual performance increased