Patent ID: 7613558
Filing Date: 2009-11-03
Classification: B60K,B60T,B60W,F16D,Y10T

Abstract:
1. A differential limiting control apparatus for a vehicle having a clutch unit interposed between one rotational shaft and another rotational shaft for variably changing a driving force transmission between the one rotational shaft and the other rotational shaft, comprising: a target differential speed setting unit for setting a target differential speed between the one rotational shaft and the other rotational shaft, an actual differential speed detecting unit for detecting an actual differential speed between the one rotational shaft and the other rotational shaft, a first control unit for computing a first clutch torque of the clutch unit based on a deviation between the target differential speed and the actual differential speed, a throttle opening amount detecting unit for detecting a throttle opening amount, a second control unit for computing a second clutch torque of the clutch unit based on the throttle opening amount, a tire diameter difference computing unit for computing a diameter difference of a tire, and a final clutch torque computing unit for computing a final clutch torque wherein the final clutch torque computing unit computes the final clutch torque by a computation involving the first clutch torque, the second clutch torque, and at least one tire diameter difference ratio coefficient value which tire diameter difference ratio coefficient value changes according to the diameter difference of the tire so as to suppress a wheel slippage.