Variable valve timing control for internal combustion engines

Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing

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Details

123 9016, 123 9017, F01L 134

Patent

active

042613078

ABSTRACT:
In the particular embodiments of the invention disclosed in the Specification, a variable valve control mechanism for internal combustion engines has a movable element interposed between the inlet valve cam and the inlet valve cam follower which is positioned in such a way as to delay closing of the inlet valve. In one form, a roller is interposed between the cam and the follower. In another form, a rocker arm has two pads, one of which is interposed between the cam and its follower, and the other of which is positioned to displace the rocker arm laterally in accordance with the position of a control arm upon which the rocker arm shaft is movably mounted.

REFERENCES:
patent: 1175820 (1911-03-01), Rounds
patent: 1318542 (1919-10-01), Chevrolet
patent: 2260983 (1941-10-01), Walker
patent: 2266077 (1941-12-01), Roan
patent: 2565022 (1961-08-01), Hattink
patent: 2773490 (1956-12-01), Miller
patent: 2780912 (1957-02-01), Miller
patent: 2880711 (1959-04-01), Roan
patent: 2880712 (1959-04-01), Roan
patent: 2977943 (1961-04-01), Lieberherr
patent: 2997991 (1961-08-01), Roan

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