Torque distribution control system for automotive vehicles

Details Torque distribution control system for automotive vehicles Torque distribution control system for automotive vehicles

1997-03-21

1999-07-27

Mai, Lanna

Motor vehicles

Having four wheels driven

With differential means for driving two wheel sets at...

B60K 17344

Patent

active

059274255

ABSTRACT:
A torque distribution control system for an automotive vehicle comprises a friction clutch adapted to distribute an engine power between front and rear road wheels or between left and right road wheels, a sensor provided for monitoring wheel speeds, a control unit being responsive to the wheel speeds for computing a wheel-speed difference and for computing a command signal value indicative of an engagement force to be applied to the friction clutch in response to the wheel-speed difference, and an actuating device for actuating the friction clutch in response to the command signal value. The control unit has a processor for discriminating whether the vehicle is in a specified running state in which it is possible to precisely compute a specific wheel-speed difference, occurring due to a difference in outside diameter of tires. The processor compensates for the wheel-speed difference on the basis of the specific wheel-speed difference at the time when the vehicle is in the specified running state and the fluctuations in the engagement force take place due to the different-diameter tire installed.

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