Arrangement for and method of automatically controlling a differ

Details Arrangement for and method of automatically controlling a differ Arrangement for and method of automatically controlling a differ

1997-06-30

2000-03-14

Cuchlinski, Jr., William A.

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Indication or control of braking, acceleration, or deceleration

701 69, 701 89, 180247, 180249, G06F 700, G06F 1700

Patent

active

060385065

ABSTRACT:
For automatically controlling a differential lock in drive axles of a motor vehicle, an arrangement has a lock coupling, an actuator for actuating the lock coupling, a plurality of rotary speed sensors associated with wheels of the vehicle for forming the rotary speed signal, a control unit for receiving the rotary speed signals and forming a control signal for controlling the actuator means, the control unit including computing means for computing a nominal rotary speed value associated with each of the wheels so that a computed nominal rotary speed value is determined continuously in dependence from a corresponding traveling condition, a first comparing unit for forming a difference rotary speed value from a comparison of a measured rotary speed value with the computed nominal rotary speed value, and a second comparing unit for forming the control signal so that when the difference rotary speed value exceeds a predetermined threshold value the lock coupling is engaged and when the difference rotary speed value is under a predetermined threshold value the lock coupling is disengaged.

REFERENCES:
patent: 3642329 (1972-02-01), Zechnall et al.
patent: 4890685 (1990-01-01), Naito
patent: 4953654 (1990-09-01), Imaseki et al.
patent: 5002147 (1991-03-01), Tezuka et al.
patent: 5152357 (1992-10-01), McLean et al.
patent: 5366041 (1994-11-01), Shiraishi et al.
patent: 5676219 (1997-10-01), Fruhwirth et al.
patent: 5802489 (1998-09-01), Orbach et al.

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