System for decreasing clutch current during a change of range in

Details System for decreasing clutch current during a change of range in System for decreasing clutch current during a change of range in

1985-01-23

1987-06-23

Staab, Lawrence

192 clutches and power-stop control

Vortex-flow drive and clutch

With brake

192 0075, 192 0092, 192 356, B60K 4122

Patent

active

046746102

ABSTRACT:
A system for controlling an electromagnetic clutch for a vehicle having an infinitely variable transmission which has a high engine speed drive range (Ds range) for increasing the transmission ratio when selected. The system is provided with a control unit for producing a pulse train for controlling the clutch torque of the electromagnetic clutch. The duty ratio of the pulse train temporarily varies so as to decrease the clutch torque, when the Ds range is selected.

REFERENCES:
patent: 4061217 (1977-12-01), Toyota et al.
patent: 4248333 (1981-02-01), Matsumoto et al.
patent: 4369675 (1983-01-01), van Deursen
patent: 4515257 (1985-05-01), Takano et al.
patent: 4518064 (1985-05-01), Windsor

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