SIMULATION STUDY TO EVALUATE THE CHARGING EFFICIENCY WHEN IMPROVING THE CHARGING INTAKE MANIFOLD FOR A SINGLE CYLINDER DIESEL ENGINE MANUFACTURED IN VIETNAM

Tóm tắt

Single-cylinder diesel engines used in agriculture produced in Vietnam using outdated technology from 20 to 30 years ago can hardly meet fuel economy and emission standards. Therefore, in this study, the author focuses on improving the intake structure of the RV165 single cylinder diesel engine manufactured by VEAM to improve the intake coefficient and the mixing between air and fuel. The study was conducted on Ansys-ICE software, with simulation conditions from 1000 (rpm) to 2200 (rpm). The improvement scheme focuses on changing the intake path, with three cases: changing the curvature, the profile and a combination of both for the intake path. The results showed that compared to the original, the intake coefficient in the improved cases was larger, in which the case of combined change of both intake curve and intake throat profile was the largest, corresponding to an increase of 2.18% compared to the unimproved case.