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research-article

Numerical study on the tribological performance of ring/liner system with consideration of oil transport

[+] Author and Article Information
Cheng Liu

Key Laboratory of Manufacturing Equipment of Shaanxi Province, Xi’an University of Technology, Xi’an 710048, China; State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
liucheng123995@163.com

Yanjun Lu

Key Laboratory of NC Machine Tools & Integrated Manufacturing Equipment of the Ministry of Education of China, Xi’an University of Technology, Xi’an 710048, China; State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
yanjunlu@xaut.edu.cn

Yongfang Zhang

School of Printing, Packaging Engineering and Digital Media Technology, Xi’an University of Technology, Xi’an 710048, China
zhangyf@xaut.edu.cn

Sha Li

School of Mechanical and Precision Instrument Engineering, Xi’an University of Technology, Xi’an 710048, China
13379209867@163.com

Jianxiong Kang

School of Mechanical and Precision Instrument Engineering, Xi’an University of Technology, Xi’an 710048, China
jianxiong_Kang@163.com

Norbert Müller

College of Engineering, Michigan State University, East Lansing, MI 48824
mueller@egr.msu.edu

1Corresponding author.

ASME doi:10.1115/1.4040510 History: Received December 03, 2017; Revised June 01, 2018

Abstract

The tribological performance of a compression ring-cylinder liner system (CRCL) is numerically studied. A thermal-mixed lubrication model is developed for the lubrication analysis of the CRCL with consideration of the cylinder liner deformation. An oil transport model coupled with a mass conservation cavitation algorithm is employed to predict the oil consumption and the transition between the fully flooded lubrication condition and starved lubrication condition. On this basis, the effects of the oil supply and cylinder liner deformation on the frictional characteristics are investigated under cold and warm engine conditions. The results show that the cylinder liner deformation and oil supply have great influence on the tribological performance of the CRCL. Better tribological performance and lower oil consumption can be obtained by reasonably controlling the oil supply.

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