Influence of temperature on cam-tappet lubrication in an internal combustion engine

2007, Volume 2, Issue 4

Abstract

Keywords

Related Research

Frontiers of Mechanical Engineering >> 2007, Volume 2, Issue 4 doi: 10.1007/s11465-007-0085-8

Influence of temperature on cam-tappet lubrication in an internal combustion engine

1.School of Mechanical, Electronic and Engineering, Beijing Jiaotong University, Beijing 100044, China; 2.Department of Mechanical Engineering, Qingdao Technological University, Qingdao 266033, China; 3.State Key Laboratory of Automobile Safety and Energy, Tsinghua University, Beijing 100084, China;

Available online: 2007-12-05

HTML21 PDF 0 Collect 0

Next Previous

Abstract

The transient thermo-elastohydrodynamic (TEHL) lubrication simulation and isothermal elastohydrodynamic (EHL) simulation were performed on the exhausting cam-tappet friction pair of an internal combustion engine. Although by employing the two models the center pressure, the thickness of the lubricant film and friction coefficient obtained were similar in the changing trend during a rotating cycle, the parameters make a great difference, especially for the thickness of the lubricant film; the TEHL was four times thicker than the EHL. These results show that the temperature should not be neglected in the study of the lubrication of cam-tappet pairs.

Keywords

coefficient ; combustion ; isothermal elastohydrodynamic ; temperature ; thickness

Related Research