Research on the Control Method of Oil Injection Lubrication for Marine Low-speed Engine Cylinder

Abstract

This paper takes a marine low-speed engine as the research object and establishes a cylinder liner-piston ring lubrication model based on the time-varying supply characteristics of cylinder lubricating oil. By changing the oil injection position, oil film thickness, oil distribution range, etc., the cylinder oil injection control parameters are controlled and analyzed. Influence on the lubrication performance of cylinder liner-piston ring. The results show that when the cylinder oil feed rate is 1.0 $\mathbf{g}/\mathbf{kW}\cdot \mathbf{h}$, the oil injection point is located 1.5 m above the bottom dead center of the piston, and the renewed oil film thickness is 10.6 $\mu \mathbf{m}$, the frictional power loss(FPL) of one stroke is the lowest.