Hydraulic valve lifter

Details Hydraulic valve lifter Hydraulic valve lifter

1990-04-23

1991-04-16

Wolfe, Willis R.

Internal-combustion engines

Poppet valve operating mechanism

Tappet

123 9056, F01L 114, F01L 124

Patent

active

050073885

ABSTRACT:
A hydraulic valve lifter is disclosed which does not require a source of pressurized lubricating fluid, and is particularly suitable for engines using a splash lubrication system. The engine crankcase oil is transferred from the cam surface through a check valve into the pressure chamber of the lifter. The check valve is operated by the pressure differential between the chamber pressure and the pressure at the cam surface. The check valve may also be operated by the cam itself.

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"Dyke's Automobile and Gasoline Engine Encyclopedia," Dyke, A. L. 1943, pp. 57-59, Chicago, The Goodheart-Willcox Co.

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