[1] Nguyen Van Liem, , Zhang Jianrun, et al. Effects of crankpin bearing speed and dimension on engine power [J]. Journal of Southeast University (English Edition), 2021, 37 (2): 119-127. [doi:10.3969/j.issn.1003-7985.2021.02.001]

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Effects of crankpin bearing speed and dimension on engine power()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

37

Issue:

2021 2

Page:

119-127

Research Field:

Traffic and Transportation Engineering

Publishing date:

2021-06-20

Info

Title:

Effects of crankpin bearing speed and dimension on engine power

Author(s):

Nguyen Van Liem¹;  2;  3;  Zhang Jianrun¹;  Jiao Renqiang²;  Huang Dacheng¹

¹School of Mechanical Engineering, Southeast University, Nanjing 211189, China
²School of Mechanical and Electrical Engineering, Hubei Polytechnic University, Huangshi 435003, China
³Faculty of Automotive and Power Machinery Engineering, Thai Nguyen University of Technology, Thai Nguyen 23000, Vietnam

Keywords:

slider-crank mechanism;  crankpin bearing;  lubrication performance;  friction loss

PACS:

U461.3

DOI:

10.3969/j.issn.1003-7985.2021.02.001

Abstract:

A new method combining the slider-crank mechanism dynamic(SCM)and crankpin bearing(CB)lubrication models is proposed to analyze the effects of CB dimensions and engine speed on the lubrication efficiency and friction power loss(LE-FPL)of an engine. The dynamic and lubrication equations are then solved on the basis of the combined model via an algorithm developed in MATLAB. To enhance the reliability of the research results, the experimental data of combustion gas pressure is applied for simulation. The load bearing capacity(or oil film pressure), friction force, friction coefficient, and eccentricity ratio of the CB are selected as objective functions to evaluate the LE-FPL. The effects of engine speed, bearing width, and bearing radius on the LE-FPL are then evaluated. Results show that reductions in engine speed, bearing width, or bearing radius can decrease the FPL but reduce the LE of the engine and vice versa. In particular, the LE-FPL can effectively be improved by slightly reducing the bearing width and bearing radius or maintaining engine speed at 2 000 r/min.

References:

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Memo

Memo:

Biographies: Nguyen Van Liem(1986—), male, doctor; Zhang Jianrun(corresponding author), male, doctor, professor, zhangjr@seu.edu.cn.
Foundation items: The National Key Research and Development Plan(No. 2019YFB2006402), the Key Project of Scientific Research Plan of Hubei Polytechnic University(No. 21xjz02A), the Open Fund Project of Hubei Key Laboratory of Intelligent Transportation Technology and Device, Hubei Polytechnic University(No. 2020XY105, 2020XZ107).
Citation: Nguyen Van Liem, Zhang Jianrun, Jiao Renqiang, et al.Effects of crankpin bearing speed and dimension on engine power[J].Journal of Southeast University(English Edition), 2021, 37(2):119-127.DOI:10.3969/j.issn.1003-7985.2021.02.001.

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