A Study on the Evaporation of Multi-component Oil on the Cylinder Wall of a Diesel Engine

Abstract

As for reducing the lubricating oil consumption it is important to solve the mechanism of evaporation of the lubricating oil on the cylinder wall surface. This paper describes studies on the modeling of evaporation for multi-component engine oils and the relationship among the measured lubricating oil consumption, the calculated oil evaporation and the mixed oil volatility. It has been made obvious that a large portion of the evaporation results from the oil component with smaller molecular weight and higher vapor pressure. And it has been clarified how the evaporative oil consumption relates with the values estimated by Noack and TGM methods.