Cam drive mechanism

Details Cam drive mechanism Cam drive mechanism

1987-02-10

1988-02-09

Yeung, James C.

Internal-combustion engines

Poppet valve operating mechanism

Camshaft drive means

123 9015, 123 9017, 74568R, 74838, 464104, 464105, F01L 102

Patent

active

047235179

ABSTRACT:
An engine driven camshaft cam is driven in a manner to superimpose a variable oscillation on the cam as it is rotatably driven in order to vary the period during which an associated valve is opened, the drive including an engine driven gear or sprocket journalled in a block whose axis is displaceable transversely to the axis of the cam, a slider member secured for rotation with the gear and guided for linear radial movement relative to the gear or sprocket, and a rack on the slider member engaged by a pinion coupled to the cam for oscillating the cam relative to the camshaft upon sliding movement of the slider in response to eccentrically displacing the axis of the gear.

REFERENCES:
patent: 1826703 (1931-10-01), Batts
patent: 1916391 (1933-07-01), Shamberger
patent: 2065648 (1936-12-01), Rime-Bruneau
patent: 3404545 (1968-10-01), Walker
patent: 3886805 (1975-06-01), Koderman
patent: 4480607 (1984-11-01), Tsai et al.

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