Wear Phenomena of Chromium Plated Rings as Revealed by Radioactive Tracers 690773

Chromium wear phenomena of three types have been investigated using a continuous radio-tracing technique in single cylinder engines.
The dependence of wear on load at high wall pressures was studied in a gasoline engine using taper faced rings. It was confirmed in a laboratory diesel engine that ring wear was primarily corrosive. Techniques were developed for the rapid assessment of lubricating oils and additives and some detailed examinations of effects of additives and their concentration have been made.
Finally, ring scuffing in the gasoline engine was promoted by thermal distortion.


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