The effect of Combustion chamber pressure and dimensional deviations on the components force of an internal combustion engine

The aim of this paper is to analyze the effect of combustion chamber pressure and dimensional deviations on the components force of an internal combustion engine. The internal combustion engine, as a power source of vehicles, is a complex engineering system so the analysis of dimensional and geometric tolerances of its components is very important. in this research, the effects of dimensional tolerances of components of an internal combustion engine on the force tolerance are studied. The kinetic and kinematic analysis are used to produce a suitable mathematical model to study the effect of parameters. In a case study, for a four-cylinder engine, the tolerance analysis is done and the distribution of output forces is obtained using Monte Carlo statistical method by coding in MATLAB software. The dynamic force distribution diagrams, including the effect of combustion chamber pressure and dimensional tolerances, could be used in the design of engine components using the design method based on reliability. Also, the force tolerance analysis is done by the worst-case method to compare the results.