Modeling of the effects of lubricant chemistry on engine component wear and parametric analysis

Recently, due to the strengthened regulations on diesel engine emissions, the dynamic understanding of engines' antiwear processes has drawn renewed attention. Oil additives can help engines resist wear by forming a thin solid layer of antiwear film, and zinc dialkyldithiophosphate (ZDDP) is the most commonly used oil additive. There has been sufficient experimental effort in trying to understand the dynamics of ZDDP antiwear film formation and its effect on wear between engine components, but the effort of predicting antiwear film formation and the effect of lubricant chemistry on engine wear through modeling has just begun to emerge. The purpose of this research is going to improve such a model modeling ZDDP antiwear processes so that it can be used to understand the dynamics of antiwear film formation at different operating conditions, and use this model to gain insight into the antiwear film formation processes. The effect of different processes on antiwear film formation and the sensitivity of the film formation to different parameters have been demonstrated and analyzed.

Department dc:contributor.department

Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics.

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2009

Author dc:creator

• Liao, Kai, Ph. D. Massachusetts Institute of Technology

Advisor dc:contributor.advisor

• Victor W. Wong.

• Aeronautics and Astronautics.

Statement dc:rights

• M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.

Licence dc:rights.uri

• http://dspace.mit.edu/handle/1721.1/7582

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/1721.1/51631

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/51631