Simulation of New Engine Crank Rocker Mechanism Based on ADAMS

In order to improve the force status of piston and cylinder in traditional engine and to increase transfer efficiency,a new engine crank rocker mechanism was designed. A 3D solid model of the mechanism was constructed using Pro / E 3D modeling software; and then kinematical and dynamical simulations for this model were carried out based on the software ADAMS. Parameters for axle torque,connecting rod swing angle and side pressure of piston on cylinder were obtained and compared with the corresponding parameters of traditional engine crank rocker mechanism. It is found that the swing angle of connecting rod is between 0° and 0. 97°,which is much smaller than the corresponding value of traditional engine crank rocker mechanism. Under the same gas pressure condition,the lateral pressure between piston and cylinder is about 1 /20 of the traditional one. Conclusionis that the new power output device is feasible to satisfy engine cycle requirements; the force status of piston and cylinder can be significantly improved. It has significance to extending the piston and cylinder working time and simplifying engine structure.