×

System for controlling the axle differential locks of automotive vehicles

  • US 5,676,219 A
  • Filed: 07/24/1995
  • Issued: 10/14/1997
  • Est. Priority Date: 07/29/1994
  • Status: Expired due to Term
First Claim
Patent Images

1. In a motor vehicle having at least one drive axle having a pair of driven wheels, a motor for imparting power to the at least one drive axle, a non-driven axle having a pair of steerable wheels, and a transmission clutch;

  • an arrangement for controlling a lock clutch, acting as differential lock in the drive axle having a pair of driven wheels, in response to a first motor vehicle travel condition comprising the transverse slippage between the driven wheels of the drive axle comprising;

    (a) means for continuously determining speed difference between the driven wheels of the drive axle;

    (b) means for integrating the determined speed difference between the driven wheels of the drive axle to obtain an actual transverse slippage sum when said speed difference exceeds a given value which is dependent on a steering angle;

    (c) means for continuously comparing the actual transverse slippage sum with first transverse slippage sum thresholds to continuously determine if and when the actual transverse slippage sum exceeds a first transverse slippage sum threshold; and

    (d) actuating means energized for engaging the lock clutch when it is determined that the actual transverse slippage sum exceeds the first transverse slippage sum threshold and not energized when it is determined that the actual transverse slippage sum does not exceed the first transverse slippage sum threshold, said actuating means being energized only for a predetermined time after each determination that the actual transverse slippage sum exceeds the first transverse slippage sum threshold.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×