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Cam Design as Related to Valve Train Dynamics
A METHOD of cam design whereby the cam contour can be computed to produce a definite, predictable valve motion is explained here.
The design principles set forth are concerned primarily with cams for high-speed engines having overhead valves and clearance regulators.
The valve gear in such engines is relatively flexible, compared with that for heavy, slow-speed engines.
Furthermore, the actuating forces in the valve train at high speeds, in combination with this inherent flexibility, result in a valve motion that bears no simple relationship to cam contour.
Thoren, T., Engemann, H., and Stoddart, D., "Cam Design as Related to Valve Train Dynamics," SAE Technical Paper 520208, 1952,
T.R. Thoren, H.H. Engemann, D.A. Stoddart
Thompson Products, Inc.
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