The Effects of Piston Rings and Liner Break-in on Lubricating Condition
Date Published: 2007-04-16
Paper Number:2007-01-1250
DOI: 10.4271/2007-01-1250
Citation:
Wakabayashi, R., Kawanishi, M., Yoshida, H., and Ozaki, Y., "The Effects of Piston Rings and Liner Break-in on Lubricating Condition," SAE Technical Paper 2007-01-1250, 2007, doi:10.4271/2007-01-1250.
Automobile engines have undergone continuous improvements over the years in terms of higher output, lower pollutant emission, and lower fuel consumption. With recent steep rise in crude oil price, consumer interest in fuel economy of automobiles has increased. With such interest, lowering fuel consumption appears to be the issue that currently needs to be tackled. The piston ring and piston friction were measured with floating liner, we confirmed that wear of piston ring running surface influenced friction. It was confirmed by this study that main cause of break in is decrease in liner surface roughness and piston ring OD wear. Additionally, this paper indicated that friction decreased by preventing piston ring OD wear in the process of break in.
See papers presented at SAE World Congress & Exhibition, April 2007, Detroit, MI, USA, Session: CI and SI Power Cylinder Systems (Part 2 of 4) Power Cylinder Friction and Noise
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