Valve timing mechanism with eccentric bushing on rocker shaft
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 28, 1991
Grant Date -
N/A
app pub date -
Jun 29, 1990
filing date -
Jun 30, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A valve moving mechanism for a four-cycle engine of a vehicle is operatively connected to a crank shaft of the engine and is adapted to move intake and exhaust valves. A cam shaft of the valve moving mechanism is operatively connected to the crank shaft and cam means including first, second and third cams is mounted upon the cam shaft, the second and third cams having outer profiles different from that of the first cam disposed between the second and third cams. Rocker arm means are mounted so as to be rotatable upon the rocker shaft which is rotatably mounted and includes first, second and third rocker arms driven in engagement with the first, second and third cams, respectively. The rocker arm means is operatively connected to the intake and exhaust valves, the first, second and third rocker arms having supporting bases mounted upon the rocker shaft. Bush means are mounted upon the rocker shaft so as to be selectively in engagement with the first, second and third rocker arms and has an axis eccentric with respect to the axis of the rocker shaft.
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