A Comprehensive Model to Study the Dynamic Motion of Piston and Friction and Lubrication in I.C.Enignes

The Piston assembly friction loss contributes for larger part in the engine frictional loss. In order to reduce the frictional loss due to piston assembly motion, a complete model describing the dynamics of assembly is necessary. This paper presents a model to study the primary and secondary motion of piston and also a model for determination of frictional losses in the piston assembly of an automotive Internal Combustion Engine. A mixed lubrication model based on a two-dimensional Reynolds equation is presented to use in conjunction with a piston secondary motion analysis.