192 clutches and power-stop control – Vortex-flow drive and clutch – With brake
Patent
1984-12-24
1987-05-05
Bonck, Rodney H.
192 clutches and power-stop control
Vortex-flow drive and clutch
With brake
192 0075, 192 0096, 192 356, 192 215, B60K 4102
Patent
active
046624961
ABSTRACT:
A system for controlling the clutch torque of an electromagnetic clutch for a vehicle, having an accelerator pedal switch for producing an output signal when an accelerator pedal of the vehicle is released. A clutch current circuit including a transistor is provided for controlling the clutch current passing through a coil of the electromagnetic clutch. A logic gate circuit is provided to be responsive to the output signal of the accelerator pedal switch for controlling the transistor so as to decrease the clutch current to a low value approximating zero for a moment and thereafter to gradually increase the current to a predetermined value. The second circuit comprises a logic gate circuit and a pulse train generating circuit responsive to the output signal of the accelerator switch for producing a pulse train controlled by the logic gate circuit, and the duty ratio of the pulse train gradually varies so as to gradually increase the clutch current.
REFERENCES:
patent: 3132728 (1964-05-01), Chaptois
patent: 4425992 (1984-01-01), Makita
patent: 4514811 (1985-04-01), Daubenmier et al.
patent: 4515257 (1985-05-01), Takano et al.
Bonck Rodney H.
Farber Martin A.
Fuji Jukogyo Kabushiki Kaisha
Testardi David A.
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