A study on the tribological behavior of valve train system by low friction coating

Joonho Seo, Byungchul Na, Jinyoung Kim, Seunguk Park, Youngmin Lee, Hyunchul Kim, Bonghyun Lee, Daesoon Lim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The contact in the valve train system is known to be the part subject to significant load in an automobile engine. For such reason, the wear of the contact accounts for the greatest portion of entire friction loss of an engine, leading to the occurrence of abnormal wear. In order to reduce the wear in the valve train, this study first formed a crn layer to increase the bonding force with the base metal using the pvd coating method and then applied a 2-layer coating that formed the wc/c layer with low friction/wear resistance characteristics. In addition, it examined the friction characteristics occurring between the cam and tappet by using the dedicated wear tester and found that the friction torque value was reduced significantly through comparison testing with the existing part when the crn+wc/c coating was applied.

Original languageEnglish
Title of host publicationMulti-functional Materials and Structures - International Conference on Multifunctional Materials and Structures
PublisherTrans Tech Publications
Pages1470-1473
Number of pages4
ISBN (Print)0878493786, 9780878493784
Publication statusPublished - 2008 Jan 1
EventMulti-functional Materials and Structures - International Conference on Multifunctional Materials and Structures - Hong Kong, P.R., China
Duration: 2008 Jul 282008 Jul 31

Publication series

NameAdvanced Materials Research
Volume47-50 PART 2
ISSN (Print)1022-6680

Other

OtherMulti-functional Materials and Structures - International Conference on Multifunctional Materials and Structures
CountryChina
CityHong Kong, P.R.
Period08/7/2808/7/31

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Keywords

  • Camshaft
  • Friction
  • Friction coefficient
  • Tappet
  • Wear

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Seo, J., Na, B., Kim, J., Park, S., Lee, Y., Kim, H., Lee, B., & Lim, D. (2008). A study on the tribological behavior of valve train system by low friction coating. In Multi-functional Materials and Structures - International Conference on Multifunctional Materials and Structures (pp. 1470-1473). (Advanced Materials Research; Vol. 47-50 PART 2). Trans Tech Publications.