Patent ID: 6033337
Filing Date: 2000-03-07
Classification: B60K,B60W,F16H,Y10T

Abstract:
A torque splitting device for distributing an input torque applied to an input member to a pair of output members adapted to be coupled with right and left driven wheels of a vehicle at an adjustable distribution ratio, comprising:a torque splitting mechanism including at least one hydraulically actuated clutch coupled to at least one planetary gear mechanism so as to control a torque distribution ratio to the two output members;an oil circuit for supplying actuating oil to said clutch including a regulating valve for controlling a pressure of the actuating oil supplied to said clutch;means for detecting a drive condition of said vehicle; anda control unit for controlling said torque distribution ratio via said regulating valve according to a prescribed control schedule;said control unit being adapted to change said torque distribution ratio according to an output signal from said drive condition detecting means when said vehicle is turning in such a manner that said input torque is more preferentially distributed to one of the output members coupled with an outer wheel of the vehicle over the other output member coupled with an inner wheel of the vehicle when a positive drive condition is detected than when no positive drive condition is detected and, when the vehicle starts decelerating from an accelerated condition, preferential distribution of the input torque to the output member coupled with the outer wheel is canceled only after a certain time delay.