Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing
Patent
1980-06-27
1982-10-05
Feinberg, Craig R.
Internal-combustion engines
Poppet valve operating mechanism
With means for varying timing
123 9048, F01L 134
Patent
active
043523447
ABSTRACT:
A valve operating mechanism of an internal combustion engine comprises a first cam rotatable about an axis in timed relation to the engine speed, a rocker arm operatively engaged with the valve of the engine and rockable to open and control closing of said valve, a second cam rockable about an axis parallel to the axis of said first cam and interposed between the first cam and the rocker arm to provide an operative connection therebetween, the first and second cams having mating cam faces which taper axially thereof, and means for shifting one of the first and second cams axially thereof relative to the other thereby varying the angular position of the second cam independently of that of the first cam in response to variation of the engine operating condition whereby valve lift, valve timing and the period during which the valve is open are varied in accordance with the varying operating conditions of the engine.
REFERENCES:
patent: 2678641 (1954-05-01), Ryder
patent: 2823655 (1958-02-01), Repko
patent: 2997991 (1961-08-01), Roan
patent: 4182289 (1980-01-01), Nakajima et al.
patent: 4205634 (1980-06-01), Tourtelot
Aoyama Shunichi
Miisho Kazuyuki
Feinberg Craig R.
Nissan Motor Co,. Ltd.
Wolfe W. R.
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