Engine valve driving device

Details Engine valve driving device Engine valve driving device

1990-11-26

1991-10-22

Wolfe, Willis R.

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9018, 123 9026, 123 906, F01L 134, F01L 130

Patent

active

050585401

ABSTRACT:
An engine valve driving mechanism includes a cam having a tubular wall rotatable about a horizontal axis. A cam follower contacts both the inner and outer surfaces of the tubular cam wall, so that the follower is positively driven toward and away from the axis of rotation of the cam. The follower is connected to a valve stem mounted for motion in a direction perpendicular to the axis of rotation of the cam so that the motion of the cam follower enables the cam to positively and accurately drive the valve. The peripheral wall may be differently shaped in cross-section at different axial locations to provide different patterns of valve stem motion, and the cam is movable along its axis of rotation to permit selection of a desired pattern.

REFERENCES:
patent: 1937152 (1933-11-01), Junk
patent: 2122484 (1938-07-01), Murray
patent: 4061115 (1977-12-01), Predhome, Jr.
patent: 4711202 (1987-12-01), Baker
patent: 4887565 (1989-12-01), Bothwell
Japanese Public Disclosure No. 1-253513 (Appln No. 63-81735) Laid Open 10/9/89.

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