Release clutch for a vehicle
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United States of America Patent
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-
Jun 26, 2007
Grant Date -
Oct 28, 2004
app pub date -
Apr 28, 2004
filing date -
Apr 28, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vehicle includes an engine that powers a wheel through a drive train. The drive train includes a continuously variable transmission (CVT) and toothed gearing disposed between the CVT and the wheel. A release clutch is also disposed between the CVT and the wheel. A controller controls the release clutch so as to disengage the clutch when the engine is not running and engage the clutch when the engine is running. The controller includes a hydraulic cylinder that fluidly connects to the engine's oil system so that engine-generated oil pressure engages the release clutch. Disengagement of the release clutch makes it easier to push the vehicle when the engine is not running, for example, when the engine breaks down.
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