Experimental and simulative research advances in the piston assembly of an internal combustion engine

C. Kirner, J. Halbhuber, B. Uhlig, A. Oliva, S. Graf, G. Wachtmeister

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

The piston assembly is the most complex tribological system within the internal combustion engine. In order to fully exploit its optimization potential a high level of system understanding is required. Therefore, in this paper experimental studies of two single cylinder engines are combined with CFD-simulation of the piston ring pack. The introduced measurement and simulation techniques enable a holistic approach to the investigation of the tribological conditions of the piston assembly. The results - like the comparison of crank-angle resolved oil film thickness to the piston assembly friction measurement - illustrate the implications of design parameters of the piston assembly on the functional parameters friction, oil consumption, blow-by, wear and acoustics and thereby permit purposive system optimization.

Original languageEnglish
Pages (from-to)159-168
Number of pages10
JournalTribology International
Volume99
DOIs
StatePublished - 1 Jul 2016

Keywords

  • CFD piston rings
  • Floating liner engine
  • Lubricating oil film thickness measurement
  • Piston assembly

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