Effect of DLC coating on the friction power loss between apex seal and housing in small Wankel rotary engine

Shuai Zhang, Jinxiang Liu*, Yang Zhou

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

The aim of this paper is to study effect of DLC coating on the friction power loss caused by apex seal in small Wankel rotary engine. A numerical model which is capable of evaluating the lubrication state under mixed lubrication is built. The involved parameters of DLC coating are obtained through experiment. Then, the effect of DLC coating is numerically investigated and validated by experimental result. Results show that the friction power loss for DLC coated surface is about 55% of that for uncoated surface. It is partly attributed to the low friction coefficient of DLC coating. Besides, the normal force of asperity is decreased by DLC coating. It is also conducive to the reduction of the power loss.

Original languageEnglish
Pages (from-to)365-371
Number of pages7
JournalTribology International
Volume134
DOIs
Publication statusPublished - Jun 2019

Keywords

  • Apex seal
  • DLC coating
  • Friction power loss
  • Small Wankel rotary engine

Fingerprint

Dive into the research topics of 'Effect of DLC coating on the friction power loss between apex seal and housing in small Wankel rotary engine'. Together they form a unique fingerprint.

Cite this

Zhang, S., Liu, J., & Zhou, Y. (2019). Effect of DLC coating on the friction power loss between apex seal and housing in small Wankel rotary engine. Tribology International, 134, 365-371. https://doi.org/10.1016/j.triboint.2019.02.005