Valve mechanism having variable valve timing
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 8, 1986
Grant Date -
N/A
app pub date -
Mar 22, 1984
filing date -
Mar 24, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A valve mechanism for an internal combustion engine has a valve and a cam on a camshaft for operating the valve. A swingable member is provided for swinging movement about the camshaft and has a tappet receiving hole. A tappet slidably received in the hole is driven by the cam and in turn drives the valve. The valve timing can be changed by swingably moving the swingable member. A control device is provided for holding the swingable member at a position wherein the direction of movement of the tappet is aligned with the direction of movement of the valve under a heavy load, high speed engine operation and moving the swingable member to another position wherein the direction of movement of the tappet is inclined with respect to the direction of movement of the valve under a light load, low speed operation to change the valve timing.
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