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Considerations Affecting the Life of Automotive Camshafts and Tappets
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English
Abstract
WORK done in a development program relative to camshafts and tappets in the design of the Chrysler overhead-valve V-8 engine is described. The types of failure encountered are categorized as wear, scuffing, and fatigue.
An accelerated test procedure was designed to promote early cam-tappet failures, and the development work was predicated upon the results obtained therefrom.
Among the variables affecting the failure conditions, major emphasis was placed on material development. Specifically, the greater amount of time was spent in determining the optimum tappet material, while some time was devoted to the camshaft material. A combination of adjusted chemical composition and heat-treatment of hardenable cast iron for camshaft and tappets provided the best solution to the failure problems.
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Topic
Citation
Garwood, M., Kinker, D., and Manganello, J., "Considerations Affecting the Life of Automotive Camshafts and Tappets," SAE Technical Paper 560015, 1956, https://doi.org/10.4271/560015.Also In
References
- SAE Transactions Vol. 63 1955 192 203 “Wear, Scuffing, and Spalling in Passenger-Car Engines,” Ambrose H. A. Taylor J. E.