System for engaging an electromagnetic clutch during range chang

Details System for engaging an electromagnetic clutch during range chang System for engaging an electromagnetic clutch during range chang

1985-01-23

1987-04-14

Braun, Leslie

192 clutches and power-stop control

Transmission control and clutch control

Common control

192 0052, 192 354, 192 362, B60K 4122

Patent

active

046571230

ABSTRACT:
A system for controlling the clutch current of an electromagnetic clutch for a vehicle which has an automatic transmission and a select lever for selecting driving ranges in the transmission. A driving range switch is provided to be operated when the select lever is operated to select a driving range. A logic gate circuit is provided to respond to a signal of the select lever switch for allowing the clutch current to flow. A delay circuit responds to the signal of the driving range switch for producing an output with a delay and for opening the logic gate circuit, whereby the clutch is engaged for a predetermined period after the operation of the select lever.

REFERENCES:
patent: 4403683 (1983-09-01), Takano
patent: 4416360 (1983-11-01), Fiala
patent: 4457410 (1984-07-01), Suga et al.
patent: 4461374 (1984-07-01), Umezawa

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