Switch activated limp-home circuit for a power transmission

Details Switch activated limp-home circuit for a power transmission Switch activated limp-home circuit for a power transmission

1996-01-03

1998-08-04

Nguyen, Tan Q.

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Transmission control

701 61, 701 62, 701 64, 192 358, 192 363, 74335, 74336R, B60K 4122

Patent

active

057909695

ABSTRACT:
A control system is provided for a vehicle with a power source connected to a transmission, a transmission controller, a clutch and a clutch control element for controlling clutch engagement and disengagement. The control system includes a gear shift lever with a neutral and non-neutral position, a relay circuit coupled to the gear shift lever and the clutch control element that responds to neutral and non-neutral signals from the gear shift lever, and a limp-home switch coupled to the clutch control element to control the application of power to the clutch control element by providing power to the clutch control element when the switch is actuated and the gear shift lever is not in neutral and interrupting power to the clutch control element when either the limp-home switch is not actuated or the gear shift lever is in the neutral position.

REFERENCES:
patent: 4855913 (1989-08-01), Brekkestran et al.
patent: 4887491 (1989-12-01), Holbrook et al.
patent: 5053960 (1991-10-01), Brekkestran et al.
patent: 5094126 (1992-03-01), Stainton et al.
patent: 5109721 (1992-05-01), Boardman et al.
patent: 5233525 (1993-08-01), Overmann et al.
patent: 5251733 (1993-10-01), Falck et al.
patent: 5305215 (1994-04-01), Brekkestran et al.

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