Driving apparatus for intake and exhaust valves of internal combustion engine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 24, 1987
Grant Date -
N/A
app pub date -
Dec 18, 1985
filing date -
Dec 20, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
There is provided an apparatus for driving intake and exhaust valves (12) of an internal combustion engine. The apparatus comprises a valve lift controlling means (16) connected to the valves to control the lift of the valves in response to the engine operating conditions, valve driving cams (13) fixed on a cam shaft (14) and being in contact with the valve lift controlling means (16), and a phase controlling means (23) arranged on the cam shaft (14) to control the relative rotational phase of the valve driving cams, i.e., the open and close timing of the valves (12) in response to the engine operating conditions.
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