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

1979-12-03

1982-11-16

Feinberg, Craig R.

Internal-combustion engines

Poppet valve operating mechanism

Rocker

123 9044, F01L 118, F01L 124

Patent

active

043590195

ABSTRACT:
Process 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 process 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 force, is applied to the valve clearance 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: 1792795 (1931-02-01), Almen
patent: 2615438 (1952-10-01), Tucker
patent: 3124115 (1964-03-01), Voorhies
patent: 4167931 (1979-09-01), Iizuka
patent: 4241707 (1980-12-01), Mayr et al.

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