Abstract

This paper presents a study on modifying the intake port (inside cylinder head) of small diesel engine to increase charging efficiency. The charging efficiency is an important parameter to influence to engine combustion and emission. This parameter is a function of many major parameter of engines, such as: engine intake port structure. In this work, the working fluid inside the intake manifold and intake port is modelled and simulated by CAD/CFD softwares, using the input experimental parameters. The countermeasures are proposed to study and the simulation results show that the improvement of charging efficiency could be obtained under the new-models. The turbulent kinetic energy is also increased and promotes to increase charging efficiency