Research on Coupling Simulation Between Dynamics of Multi-body and Hydrodynamic Lubrication of Piston-Cylinder Sleeve System

For the purpose of establish a more accurate dynamic model of internal combustion engine (I.C.E) piston-cylinder system, the model coupling between hydrodynamic lubrication and dynamics of multi-body system of piston-cylinder system was built by linking ADAMS and FORTRAN subroutine. The coupling simulation analysis was conducted. The simulation results demonstrated that because of the coupling effect of oil film lubrication between piston and cylinder sleeve the maximum force on the cylinder sleeve decreases and the minimum force increases so that the change of the force on the cylinder sleeve becomes smooth. At the same time the influence on the piston lubricating characteristics of clearance of piston-sleeve and piston skirt length were analyzed, while the analysis provides basis for the selection and design of piston parameters.