Simulation&nbsp;on the influence of the axial partition cooling mode on the frictional power loss of cylinder liner-piston ring

CHEN Wen-bin; WANG Zi-chun; XU Jiu-jun

doi:10.16411/j.cnki.issn1006-7736.2019.03.007

2019 , Vol. 45 >Issue 3: 46 - 52

DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2019.03.007

Simulation on the influence of the axial partition cooling mode on the frictional power loss of cylinder liner-piston ring

CHEN Wen-bin ,
WANG Zi-chun ,
XU Jiu-jun

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（a.Marine Engineering College;b.Transporation Engineering College, Dalian Maritime University, Dalian 116026, China）

Received date: 2019-03-05

Revised date: 2019-04-15

Online published: 2019-04-15

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Abstract

In order to explore the influence of the axial partition cooling mode on the frictional power loss of cylinder liner-piston ring, in consideration of the asymmetry of cylinder liner circumferential direction and surface roughness of cylinder liner and piston ring, a three-dimensional transient lubrication mathematical model of cylinder liner and piston ring was established, and then used to investigate the influence of the axial partition cooling mode on the frictional power loss of cylinder liner-piston ring. The results show that the enhanced cooling on the upper part of the cylinder liner can significantly improve the lubrication of the piston ring near the top dead center. As result, the wear of the cylinder liner and the piston ring is reduced, and the working reliability of the cylinder liner-piston ring is improved. When the thermal barrier coating is deposited on the middle of the cylinder liner, the minimum oil films at the middle of the stroke and the bottom dead center are all decreased. When only the enhanced cooling on the upper part of the cylinder liner or the thermal barrier coating around the middle of the cylinder liner is conducted, the average friction loss power increases slightly. The average friction loss power decreases, if both the enhanced cooling on the upper part of the cylinder liner and the thermal barrier coating around the middle of the cylinder liner are conducted.

Key words： axial partition; cooling mode; the cylinder liner-piston ring; friction power loss; simulation

Cite this article

CHEN Wen-bin , WANG Zi-chun , XU Jiu-jun . Simulation on the influence of the axial partition cooling mode on the frictional power loss of cylinder liner-piston ring[J]. Journal of Dalian Maritime University, 2019 , 45(3) : 46 -52 . DOI: 10.16411/j.cnki.issn1006-7736.2019.03.007

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