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An Investigation into Piston Ring Scuffing During Running-In
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English
Abstract
The investigation concerns the influence of lubricants, materials, and surface finish on scuffing failure employing a special test rig and a high speed, single cylinder, engine. The rig, which was used to gain closer control and ease of observation, reproduces characteristic scuffing and has defined a range of performance in terms of contact load, ring velocity and liner temperature. Trends in performance are found to correlate with service experience and a “performance-factor” has been derived relating median failure loads for various speeds. Confirmation of rig results is being obtained in the engine in terms of operating conditions of ring velocity and ring contact load defined by the “performance-factor”.
Authors
Citation
Willn, J. and Brett, P., "An Investigation into Piston Ring Scuffing During Running-In," SAE Technical Paper 750861, 1975, https://doi.org/10.4271/750861.Also In
References
- Neale M.J. “Piston Ring Scuffing - A Broad Survey of Problems and Practice” Proc. I.Mech.E. 185 2/71 21 32
- Willn J.E. “A Survey of Information on Piston Ring and Cylinder Bore Scuffing” MIRA Bulletin No. 6 Nov/Dec 1967 12 22
- Willn J.E. “A Test Rig for Investigating Piston Ring and Cylinder Bore Scuffing” MIRA Report No. 1972/8 May 1972 30 2-6 April 1973
- Brett P.S. “A Test Engine for Investigating Piston Ring and Cylinder Bore Scuffing” BTCMPI Report BTC/L4/74 August 1974 12
- Rodgers M.D. “The Mechanism of Scuffing in Diesel Engines” AERE Report, No. 6067 1969 6
- Morris P.R. Willn J.E. Williams G. “A Comparison of the Scuffing Tendency of Lubricating Oils in Bench and Engine Tests” IP Symp. Montreux 2-6 April 1973 8
- Neale M.J. Crease A. B. “Piston Ring Design” Dept. of Industry Report 1974 90