Investigation of Pressure Distribution of Oil-film Filled between Piston Skirt and Cylinder Liner in a Engine

Abstract

The clearance between a piston skirt and a cylinder liner in an engine is filled with an oil-film. The pressure in the oil-film affects the movement of the piston. The pressure distribution in the oil-films is numerically simulated in the several former studies. However, it has not been experimentally measured yet. In this study, the pressure in the oil-film in a running engine is measured through a pressure transducer fixed in cylinder block. The pressure distribution is compared between the measurements and the numerical simulations