Variable valve timing system
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United States of America Patent
Stats
-
Sep 3, 2002
Grant Date -
Apr 4, 2002
app pub date -
Sep 21, 2001
filing date -
Sep 22, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A variable valve timing system includes a first controlling mechanism through which operation fluid is supplied to and discharged from an advanced angle chamber to restrict the relative rotation to an advanced angle side at the lock phase, and a second controlling mechanism through which operation fluid is supplied to and discharged from a retarded angle chamber to restrict the relative rotation to a retarded angle side at the lock phase. The variable valve timing system further includes passages which function as a throttle at the lock phase to connect the advanced angle chamber with the first controlling mechanism and the retarded angle chamber with the second controlling mechanism.
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