关键词: 动力机械工程, 缸套—活塞环, 润滑, 磨损

Abstract: In order to study the effects of operation conditions on the wear of engine cylinder liner and piston ring, taken a certain engine as example, a liner-ring lubrication model was established by using mean Reynolds equation. Then, the boundary conditions were determined according to the force equilibrium and cylinder thermal transfer equations. And, a sticking wear model was built on the basis of Holm-Achard wear mechanics. By using iterative algorithm, the influence of engine operation conditions was introduced in the lubrication and wear models. Finally, according to those models, the cylinder liner wear in a operation condition was calculated and compared with the test data. The results show that: their trends is consistent, and the error between them are lower than 5% near TDC.

Key words: power machinery engineering, piston ring-cylinder liner, lubrication, wear