초록 ▼

A left hydraulic pump connected to a left wheel and a right hydraulic pump connected to a right wheel of a vehicle are connected by a first oil passage and a second oil passage to constitute a closed circuit, and first and second variable throttle valves are provided between the first and second oil

A left hydraulic pump connected to a left wheel and a right hydraulic pump connected to a right wheel of a vehicle are connected by a first oil passage and a second oil passage to constitute a closed circuit, and first and second variable throttle valves are provided between the first and second oil passages and the tank. Either one of the first and second variable throttle valves is throttled to cause the first and second hydraulic pumps to produce a braking force and a driving force, respectively, thereby controlling a yaw moment. At the same time, when either one of left and right wheel suspensions expands, the roll rigidity of the vehicle increases or decreases to vary the cornering forces of the wheels, thereby producing a yaw moment which assists in the yaw moment produced by the first and second hydraulic pumps.

대표청구항 ▼

[ What is claimed is:] [1.] A yaw moment control apparatus for a vehicle comprising:a left hydraulic pump connected to and rotated by a left wheel;a right hydraulic pump connected to and rotated by a right wheel;a first oil passage which connects a discharge port of said left hydraulic pump and a su

[ What is claimed is:] [1.] A yaw moment control apparatus for a vehicle comprising:a left hydraulic pump connected to and rotated by a left wheel;a right hydraulic pump connected to and rotated by a right wheel;a first oil passage which connects a discharge port of said left hydraulic pump and a suction port of said right hydraulic pump;a second oil passage which connects a discharge port of said right hydraulic pump and a suction port of said left hydraulic pump;a first variable throttle valve provided between said first oil passage and a tank;a second variable throttle valve provided between said second oil passage and said tank;first displacement control means for increasing a discharge displacement of said left hydraulic pump according to a closure of said first variable throttle valve;second displacement control means for increasing a discharge displacement of said right hydraulic pump according to a closure of said second variable throttle valve; androll angle control means for rolling a vehicle body in one of leftward and rightward directions by using a hydraulic pressure produced by said left hydraulic pump during the closure of said first variable throttle valve, and in the other of the leftward and rightward directions by using a hydraulic pressure produced by said right hydraulic pump during the closure of said second variable throttle valve.