Kinematics and Dynamics Analysis of Piston-Connecting Rod Mechanism of Internal Combustion Engine

The kinematic and dynamic performances of piston-connecting rod mechanism of internal combustion engine (ICE) were analyzed in detail. Taking standard slider-crank mechanism as study object, the kinematic and dynamic parameters (velocity, acceleration, angular acceleration etc.) of linkage were derived. Under no any simplification, the calculating method of each physical parameter was provided. Meanwhile, taking the factual force applied to connecting rod into account, the graphical method of vector equation was used to solve each load imposed on connecting rod. The research works were believed to be beneficial to subsequent finite element analysis (stress and train fields, fatigue of connecting rod) and size optimization design of connecting rod.