A Study on Numerical Analysis Model of the Oil Film under the Oil Control Ring Considering the Generation Mechanism of Oil Pressure

Abstract

Importance of reducing oil consumption (OC) of an internal combustion engine is increasing for the protection of global environment, and calculation method for estimating OC is required. In this paper, oil pressure under the oil control ring which affects the volume of oil supplied to the compression rings is analyzed. It was found that the oil supplied to the area under oil control ring affect the oil pressure. Also, the pressure generating mechanisms can be described in the piston behavior and the water hammer phenomenon, and the calculation results considering the water hammer showed good agreement with measurement.