Soft shift reversing control system

Details Soft shift reversing control system Soft shift reversing control system

1979-03-16

1981-11-17

Silverstrim, John P.

Motor vehicles

Manually actuated controlling devices

With transmission control

180271, 192 4C, 340 53, 340 62, B60K 2002

Patent

active

043006523

ABSTRACT:
An electronic reversing control system is disclosed for preventing excessive shock loading of the vehicle driveline when the operator calls for vehicle reversal with the vehicle in motion. A digital logic forward-reverse control channel links the operator's direction control lever and the reversing means in the transmission. When reversing is called for the control channel logic is inhibited by a speed responsive signal unless the vehicle speed is below a predetermined value. A speed retarding control channel controls the vehicle brakes and throttle when a reversing signal is produced provided the speed is above the predetermined value. Additionally, the system is provided with a logic power loss detector which resonds to power supply failure and automatically shifts the transmission into neutral.

REFERENCES:
patent: 3381770 (1968-05-01), Fauchere
patent: 3858696 (1975-01-01), Shore
patent: 3910389 (1975-10-01), Pleier
patent: 3913700 (1975-10-01), James
patent: 3998191 (1976-12-01), Beyerlein
patent: 4090414 (1978-05-01), White
patent: 4161717 (1979-07-01), Hoover

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