| 摘要 |
PROBLEM TO BE SOLVED: To obtain appropriate torque transmission performance during both stop and travel.SOLUTION: In a hydraulic control device for a driving force distributing device, a hydraulic clutch for driving force distribution is installed between a driving source and sub driving wheels, and a command torque is determined according to a traveling state so that a command hydraulic pressure according to the command torque is supplied to the hydraulic clutch. When the vehicle speed is a prescribed first threshold value or less, the command hydraulic pressure according to the command torque is calculated based on a first conversion characteristic from the command torque to the command hydraulic pressure corresponding to the vehicle stop state. When the vehicle speed is a prescribed second threshold value that is larger than the first threshold value or more, the command hydraulic pressure according to the command torque is calculated based on a second conversion characteristic from the command torque to the command hydraulic pressure corresponding to the vehicle running state. And when the vehicle speed is larger than the first threshold value and smaller than the second threshold value, the command hydraulic pressure according to the command torque is calculated based on a conversion characteristic blended the first conversion characteristic from the command torque to the command hydraulic pressure with the second conversion characteristic from the command torque to the command hydraulic pressure.SELECTED DRAWING: Figure 3 |
