Chrome Face vs. Iron Side Wear—An Analysis of Some Radioactive Piston-Ring Wear Studies

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Abstract
This paper discusses piston ring wear data obtained from operating a single cylinder internal-combustion engine fitted with an irradiated standard chromium plated top compression ring. A brief description of the engine equipment, the constantly-monitored lubricating oil flow system, the dual-channel gamma spectrometer and an outline of test method are included. The author stresses the development of a technique which permits a separate simultaneous record of the wear occurring on the face and on the side of the radioactive piston ring. Results are presented from constant speed engine operation with a series of different lubricating oil additive formulations.

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