An Investigation of the Cylinder Wall Oil Film Development During Warm-Up of An SI Engine Using Laser-Induced Fluorescence

Paper #:
  • 971699

Published:
  • 1997-05-01
DOI:
  • 10.4271/971699
Citation:
Frolund, K., Schramm Phd, J., Noondby, B., Tian, T. et al., "An Investigation of the Cylinder Wall Oil Film Development During Warm-Up of An SI Engine Using Laser-Induced Fluorescence," SAE Technical Paper 971699, 1997, doi:10.4271/971699.
Pages:
11
Abstract:
The single-point LIF-measurement technique has been applied to a four-cylinder spark-ignition production engine for investigation of the oil film layer between the piston, piston rings and the cylinder wall. The lubrication process was studied during engine warm-up and it was found that a scaling law could be successfully used. This scaling law enables simple scaling of the oil film thickness of the compression ring, scraper ring and on the liner during warm-up, assuming the oil film thickness and cylinder liner temperature are known for the steady-state operating condition. Thereby the value of traditional measured steady-state lubrication data is enhanced.
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