Hydraulic valve lifter

Details Hydraulic valve lifter Hydraulic valve lifter

1978-12-01

1980-09-23

Haroian, Harry N.

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9055, F01L 134

Patent

active

042236487

ABSTRACT:
A hydraulic valve lifter for an internal combustion engine is provided with a thin flexible valve disc, with a sharp edge orifice therethrough, that is operative to sense the oil flow rate between a hydraulic supply chamber and a pressure chamber within the lifter whereby to regulate the volume capacity of the pressure chamber and therefore the axial extent of the valve lifter as a function of engine speed.

REFERENCES:
patent: 3509858 (1970-05-01), Scheibe et al.

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