Research on the coupling problem of the tribological and dynamic behaviors in the piston-liner systems of multi-cylinder internal combustion engines

The coupling problem between the dynamic behaviors and the tribological behaviors of the piston-liner systems in multi-cylinder internal combustion engines was studied. Based on the correction of some errors in the equation of piston secondary motion, which have been employed by many authors for several years, a detailed mathematical model for the coupling problem between the dynamical and tribological behaviors in the piston-liner systems of multi-cylinder internal combustion engine was presented. In the model, the inertial force of the connecting-rod was involved in the calculation of the piston secondary motion for the first time, the primary dynamical factors that have impacts on the tribological behaviors in the piston-liner systems were discussed throughly, and the effects of the coupling process on the forces such as the piston thrust force, the connecting-rod force and the main bearing force were studied, and the traditional mathematical model of them were revised accordingly.