抄録
Such as engines with driving pistons, it is important to understand gas flows in the cylinder to design more efficient intake and exhaust system. Above all, we have to consider the pressure distribution at near the spark plug caused by the shape of flow channel. In this paper, the numerical method of fluid-solid interactions for unsteady flow is used to demonstrate the gas flow driven by intake, compression, ignition and exhaust in the cylinder attributed to the motion of piston-crank system. As a result, the cell-motor torque contributes the piston-crank motion, consequently the compression phase is reproduced properly. In the future study, we try to consider other phases of the four-cycle engine for more detailed analysis.
