Valve actuating apparatus in internal combustion engine

Details Valve actuating apparatus in internal combustion engine Valve actuating apparatus in internal combustion engine

1985-09-20

1986-09-16

Lazarus, Ira S.

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9027, 123 9039, 123 9044, 123198F, F02D 1306

Patent

active

046115587

ABSTRACT:
A valve actuating apparatus for intake and exhaust valves in an internal combustion engine having a swing rocker arm consisting of two arms rotatably interconnected by means of a connecting shaft, one of the arms being rotatably connected to a rocker arm shaft and the other bearing against a valve stem so that the two arms can selectively occupy an operative position, in which the two arms extend substantially straight to form a single rocker arm, and an inoperative position in which a relative rotation between the two arms takes place to absorb the rotation of the cam. A lock pin is provided in one of the first and second arms to prevent relative rotation of the two arms and to lock them to the operative position, and an actuator for releasing the lock at a predetermined time, the locking means and unlocking means having directions of operation substantially perpendicular to and across the axis of the connecting shaft.

REFERENCES:
patent: 4151817 (1979-05-01), Mueller
patent: 4203397 (1980-05-01), Soeters
patent: 4204512 (1980-05-01), Brock
patent: 4252093 (1981-02-01), Hazelrigg
patent: 4380219 (1983-04-01), Walsh
patent: 4537164 (1985-08-01), Ajiki et al.
patent: 4556025 (1985-12-01), Morita

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