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US 4,732,245 AGranted
Control apparatus for clutch torque in hydrodynamic power transmitting device
AssigneeMitsubishi Jidosha Kogyo Kabushiki Kaisha
InventorTakeo Hiramatsu
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Abstract
The torque of a clutch disposed in parallel with a hydrodynamic power transmitting device provided between an engine and a transmission is gradually reduced upon disengaging the clutch when the torque of the engine is higher than a predetermined level. As a result, the instantaneous great drop in the output torque of the transmission at the time of the disengagement of the clutch is prevented to thereby improve the acceleration response of a vehicle.
Claims4
An apparatus for controlling a variable-capacity clutch in a hydrodynamic power transmitting system comprising:
- a hydrodynamic power transmitting device interposed between an output shaft on an engine and an input shaft of a transmission;
- and a clutch transmitting power in parallel with said hydrodynamic power transmitting device from said output shaft to said input shaft, said controlling apparatus comprising;
- an operating condition detection means for detecting operating conditions of said engine including its torque;
- judgment means which receives a signal from said operating condition detection means for judging whether the operating condition of the engine is in a domain in which the clutch should be disengaged;
- trigger means which receives a signal from said judgment means for commanding the disengagement of said clutch;
- and
- first control means which receives a disengagement command signal from said trigger means and receives a signal indicating that the torque of said engine is higher than a first predetermined level from said operating condition detection means, for gradually decreasing the torque transmission capacity of said clutch upon disengaging said clutch
4 more elements
Dependencies are inferred from the claim text.