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Laser surface texturing of Wankel engine apex seals

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posted on 04.08.2020 by Nick Morris, George Hart, Yong Jie Wong, Matt Simpson, Sebastian Howell-Smith
Wankel rotary engines are used as power units in contemporary machines such as unmanned aerial vehicles and automobile range extenders due to their high-power density. A challenge of the engine architecture is the maintenance of an effective seal around each chamber while simultaneously minimising parasitic frictional losses. This paper investigates, experimentally, the suitability of laser surface texturing to reduce frictional losses at the apex seal-housing interfaces of Wankel engines. To inform the design of the laser surface texture features an analytical model is created to characterise the tribological properties of the apex seal-housing conjunction. The performance of the texture features is evaluated experimentally, and the results indicate that laser surface texture features can reduce frictional power loss by up to 30% at the apex seal-housing interface.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Surface Topography: Metrology and Properties

Volume

8

Issue

3

Publisher

IOP Publishing

Version

VoR (Version of Record)

Rights holder

© The Authors

Publisher statement

Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence (https://creativecommons.org/licenses/by/4.0/). Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

Acceptance date

03/08/2020

Publication date

2020-08-10

Copyright date

2020

eISSN

2051-672X

Language

en

Depositor

Dr Nick Morris. Deposit date: 4 August 2020

Article number

034001

Licence

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