关键词: 材料失效与保护 , 发动机 , 抗磨润滑剂 , 均匀设计 , 摩擦化学 , 协同效应

Abstract: A novel full formula of anti-wear lubricant was developed on the basis of traditional lubricant of equipped engines by selecting and optimizing some functional additives. Its tribological properties were tested on several tribotesters simulating different working conditions, the application performance was investigated on e- quipped engines, and the anti-wear and friction-reducing mechanisms were discussed also. The results show that? the experiment times are reduced and the ingredients are optimized by way of uniform design and synergistic ef?fect research. Compared with the traditional lubricant, the extreme pressure and anti-wear properties of this lu?bricant under high temperature and heavy load conditions are increased by 40.8% , 56.7% and 82.6% , respec?tively, and the friction-reducing property is improved by 45% also. Moreover, this anti-wear lubricant can im?prove engine’s power performance and prolong the service life. The mechanism is inferred that the lubrication and integrated properties of traditional lubricant are improved by tribochemical reactions and synergistic effects of the functional additives.

Key words: failure and protection for material , engine , anti-wear lubricant , uniform design , tribochemistry , synergistic effect