A Simulation Study on Improving Charge Process and Volumetric Efficiency of a Conventional Agriculture Engine

The RV165 engine produced by VEAM (Vietnam Motors and Agricultural Machinery Corporation) is widely used in agricultural machinery in Viet Nam. However, this engine was manufactured based on a franchise from Kubota (Japan) more than 20 years ago. The manufacturing process is carried out according to many old and outdated technologies, so the quality of the engine is not high, and the exploitation and use process has many limitations. Therefore, in this paper, the authors present the process of improving the RV165's intake manifold on Ansys-ICE. The results show that choosing the appropriate curvature combined with expanding the intake port will help reduce fluidity losses and change the airflow velocity when passing through the intake valve, thereby not only increasing the volumetric efficiency but also improving the mixing process between fuel and air in the cylinder.