Patent ID: 7179197
Filing Date: 2007-02-20
Classification: B60W,F16D,Y10T

Abstract:
1. A clutch state determining device for determining engagement or disengagement of a clutch, which provides or interrupts transmission of rotating power from a driving part to a driven part, the clutch state determining device comprising: sensing means for sensing a rotation speed of the driving part; prohibiting means for suspending or prohibiting the determination of the engagement or the disengagement of the clutch if power for varying the rotation speed of the driving part is transmitted from the driving part or the driven part; and determining means for determining whether the clutch is in a disengaged state based on the variation in the rotation speed of the driving part sensed by the sensing means when the prohibiting means determines that neither the driving part nor the driven part transmits the power for varying the rotation speed of the driving part, wherein the driving part is an engine mounted in a vehicle, the driven part is a power transmission system for transmitting the rotating power of the engine to wheels, and the sensing means includes a rotation speed sensor for sensing an instantaneous rotation speed provided by each one of cylinders of the engine.