ZDDP and MoDTC interactions and their effect on tribological performance - tribofilm characteristics and its evolution

摘要

Reduction of the boundary lubrication friction component in the overall friction that occurs in internal combustion engines leads to a significant improvement in fuel economy. In cam/followers and partly in piston rings/cylinder wall, friction reduction and maintenance of low wear rates is highly dependent upon the activity of key additive components in the lubricant. In this work the interactions between two key additives in current lubricants (ZDDP and MoDTC) and the effect of their interactions on tribofilm formation and evolution under boundary lubrication are studied. The ultimate goal is to develop a predictive modelling capability, linking film formation, composition and structure to tribological performance. For this, a thorough understanding of the chemical nature of the tribofilm is required.