Patent ID: 6945909
Filing Date: 2005-09-20
Classification: B60K,B60W,F16D,Y10T

Abstract:
1. A torque distribution control device for a four-wheel drive vehicle having a torque transmission clutch for distributing the torque transmitted from an engine to prime drive wheels and to sub-drive wheels, said control device comprising: pre-torque operation means for determining a pre-torque to be transmitted to said sub-drive wheels based on a vehicle speed, a throttle opening degree and the gear shift step of a transmission; compensation torque operation means for determining a compensation torque based on the rotational speed difference between said prime drive wheels and said sub-drive wheels; and command torque operation means for determining a command torque by the addition of said pre-torque and said compensation torque; wherein said torque transmission clutch is controlled based on said command torque input from said command torque operation means.