Journal
TRIBOLOGY INTERNATIONAL
Volume 44, Issue 1, Pages 29-41Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2010.09.002
Keywords
Piston rings; Lubrication; Friction; Fuel economy
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This paper shows how design of experiments can be used with a ring-pack simulation program to optimise the design of a piston-ring assembly Ten factors are varied-six describing the ring profile three ring tensions and the lubricant viscosity Statistical analysis shows that there are some significant interactions between some of the factors-an Issue that should be considered when performing te t-bed measurements on engines It is shown that an improved design can be achieved that reduces ring losses by 57% whilst reducing upward oil flow by 39% This could lead to a 7% improvement in fuel economy provided there are no deleterious effects in other parts of the engine (C) 2010 Elsevier Ltd All rights reserved
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