Patent ID: 6692090
Filing Date: 2004-02-17
Classification: B60T

Abstract:
A method of maintaining the engine brake of a vehicle during hill descent by an active, electronically controlled application of wheel brakes on at least one wheel, comprising:a determination of the status of the wheels split into groups including at least one stable wheel group and including at least one unstable wheel, the deceleration of all of the stable wheels by applying the wheel brakes to the stable wheels in the event of at least one unstable wheel, and the transmission of an engine drive torque to the unstable wheel to prevent the unstable wheel from rotating in a direction opposite of the rotation of the stable wheels, on which the condition VunstableiÃ—Vref occurs, whereinVunstable=speed of the unstable wheel Vref=medium wheel speed of the stable wheels Ki=correction factor.