This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Diesel Engine Piston Scuffing: A Preliminary Investigation
Annotation ability available
Sector:
Language:
English
Abstract
Failure analyses were conducted on the top piston rings from selected Caterpillar 1K tests. Metallography, scanning electron microscopy, and X-ray spectroscopy were applied to characterize the top ring surface and subsurface damage.
Pitting an erosion of the ring's hard facing characterized the damage observed in the scuffing cases studied. These observations support the theory that top ring failure may have started the chain of events that lead up to piston scuffing in the 1K.
The top ring damage may be the result of corrosive combustion by-products that are formed in the ring belt area. The analyses in all three cases indicated that top ring failure had occurred prior to piston skirt scuffing. Several hypotheses are offered as to what may have initiated this top ring failure.
Recommended Content
Authors
Topic
Citation
Wong, T., Scott, C., and Ripple, D., "Diesel Engine Piston Scuffing: A Preliminary Investigation," SAE Technical Paper 930687, 1993, https://doi.org/10.4271/930687.Also In
References
- Caterpillar SCOTE 1K Test Procedure ASTM TMC Memorandum: 92-219 10 September 1992
- Munro R. “Emissions Impossible - The Piston & Ring Support System” SAE 900590
- Burnett P.J. “Relationship Between Oil Consumption, Deposit Formation and Piston Ring Motion for Single-Cylinder Diesel Engines” SAE, 920089
- Goodsell D. Dictionary of Automotive Engineering SAE 130 1989
- Prasse H.F. McCormick H.E. Anderson R.D. “New Developments in Piston Rings for High BMEP Engines” SAE, 690753
- McCormick H.E. Anderson R.D. Mayhew D.J. Rychlewski W.J. “New Developments in Piston Rings for the Modern Diesel Engine” SAE 750769
- Zhengbai L. Guorong Q. Puning W. “A Solution for Cylinder Wall Scuffing” SAE, 920658
- Single Cylinder Engine Tests for Evaluating the Performance of Crankcase Lubricants Part 1. Caterpillar 1G2 Test Method (STP 509A, Part 1) ASTM Philadelphia 1979
- CRC Diesel Engine Rating Manual No. 18 Coordinated Research Council Atlanta 1991
- Service Manual for Single Cylinder Oil Test Engine for Diesel Lubricants Caterpillar Tractor Company 1983
- Benchaita M. T. “A Reliable Single Cylinder Engine Test for Evaluation of Today's Heavy Duty Diesel Oils for Oil Consumption and Piston Deposits” SAE, 881582
- Anderson R. D. “Piston Ring Design for Automotive Gasoline Engines” Ramsey Corporation