Patent ID: 6842681
Filing Date: 2005-01-11
Classification: B60K,B60W

Abstract:
1. A torque distribution control device for a four-wheel drive vehicle having a torque distribution device for distributing the drive power transmitted from an engine to prime drive wheels, to sub-drive wheels, said control device comprising abnormality judgment means for judging whether or not an abnormality is involved in wheel speed signals relating to said prime drive wheels and said sub-drive wheels; and means for altering a normal-state method of calculating a command torque which is applied to said torque distribution device to vary said drive power transmitted to said sub-drive wheels, to an abnormal-state method of calculating said command torque based on data which does not include one wheel speed signal involving said abnormality when the same occurs with one of said wheel speed signals, whereby said vehicle is enabled to continue the four-wheel drive even when said abnormality occurs.