Process for preventing the pumping of a hydraulic valve clearanc

Details Process for preventing the pumping of a hydraulic valve clearanc Process for preventing the pumping of a hydraulic valve clearanc

1982-04-16

1983-12-06

Feinberg, Craig R.

Internal-combustion engines

Poppet valve operating mechanism

Rocker

123 9044, F01L 118, F01L 124

Patent

active

044186592

ABSTRACT:
An apparatus for preventing the pumping of a hydraulic valve clearance compensating element in a valve operating mechanism of an internal combustion engine; wherein a valve actuating lever is supported by means of a hydraulic valve clearance compensating element in a bearing zone of the lever and is controlled by a cam is disclosed. The apparatus is characterized in that during operation of the engine, an auxiliary force which counteracts a compensating force of the valve clearance compensating element, and which is greater than the compensating element only during a valve lifting phase of the cam in response to movement of the cam, the auxiliary force acting upon the bearing zone of the lever and being independent of a bearing force of the valve actuating lever.

REFERENCES:
patent: 1931476 (1933-10-01), Hallett
patent: 3045657 (1962-07-01), Sampietro
patent: 3463131 (1969-08-01), Dolby
patent: 4167931 (1979-09-01), Iizuka
patent: 4359019 (1982-11-01), Gaede

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