Electronic controller for automatic transmission

Details Electronic controller for automatic transmission Electronic controller for automatic transmission

1988-11-14

1991-06-04

Gruber, Felix D.

Boots, shoes, and leggings

74866, 340441, B60K 2800, B60Q 1100, G05B 1101

Patent

active

050219553

ABSTRACT:
In an electronic controller for an automatic transmission having at least one driving circuit incorporating a switching device for driving a solenoid used as an actuator, at least one monitor circuit for detecting an abnormal state of the actuator, and a control section connected to these circuits, an emergency power cutoff circuit is provided between the solenoid driving circuit and the positive terminal of a battery (solenoid driving power source). The switching operation of the emergency power cutoff circuit is freely controlled to effect fail-safe control on the basis of a signal which is output from a microcomputer if, for example, the switching device in the controller malfunctions by short-circuiting.

REFERENCES:
patent: 3406318 (1968-10-01), Harland et al.
patent: 4174495 (1979-11-01), Rosa
patent: 4414863 (1983-11-01), Heino
patent: 4442727 (1984-04-01), Young
patent: 4523281 (1985-06-01), Noda et al.
patent: 4734861 (1988-03-01), Bertolasi et al.

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