Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing
Patent
1981-10-13
1984-03-27
Feinberg, Craig R.
Internal-combustion engines
Poppet valve operating mechanism
With means for varying timing
123 9031, 123 9044, F01L 134
Patent
active
044387350
ABSTRACT:
The valve operating apparatus includes an upper and lower rocker arm for each valve to be controlled, each having a straight section and a curved section. The lower rocker arm is mounted at one end for pivotal movement about a fixed axis, its other end acting against the valve to be controlled. The upper rocker arm is mounted at one end for pivotal movement about a shiftable or movable axis. Depending on where the upper rocker arm has been shifted to in relation to the camshaft and concomitantly where the upper arm has been shifted in relation to the lower arm the lift and duration of valve opening is controlled. A timing mechanism is actuated by the valve operating apparatus so as to angularly displace the camshaft on which the above alluded to cam is mounted in a direction to advance or retard the valve opening and closing with respect to the crankshaft and hence in relation to the piston movement produced by the crankshaft.
REFERENCES:
patent: 2260983 (1941-10-01), Walker
patent: 3496918 (1970-02-01), Finlay
patent: 3897760 (1975-08-01), Hisserich
patent: 3986484 (1976-10-01), Dyer
patent: 4174683 (1979-11-01), Vivian
Feinberg Craig R.
Investment Rarities Incorporated
Wolfe W. R.
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