Turn control apparatus for a vehicle
First Claim
1. A vehicle turn control apparatus, which includes a hydraulic circuit connecting a master cylinder connected to a brake pedal and wheel brakes provided corresponding individually to wheels of a vehicle, a pump adapted to generate and supply a hydraulic pressure to the hydraulic circuit when actuated, and a hydraulic pressure control valve unit arranged in the hydraulic circuit so as to be located between the pump and the wheel brakes and adapted to adjust the hydraulic pressure generated by the pump, and which supplies the hydraulic pressure, generated by the pump and adjusted by means of the hydraulic pressure control valve unit, to one or more required wheel brakes while there is a turn control request, said apparatus comprising:
- required control valve calculating means for deriving a required control valve for yaw moment control in accordance with an operating condition and/or behavior of the vehicle;
pre-pressurization control means for actuating the pump when a first predetermined value is reached by the required control valve; and
hydraulic pressure control means for controlling the operation of the hydraulic pressure control valve unit in accordance with the required control valve, the hydraulic pressure control means being adapted to discriminate the turn control request and start the operation control for the hydraulic pressure control valve unit when a second predetermined value greater than the first predetermined value is reached by the required controlled variable.
3 Assignments
0 Petitions
Accused Products
Abstract
A vehicle turn control apparatus includes an electronic control unit, which computes a required control valve for yaw moment control in accordance with the operating condition and/or behavior of a vehicle, actuates a pump when a first predetermined value is reached by the required control valve, and starts operation control for hydraulic pressure control valves when a request for turn control is made after a second predetermined value is reached by the required control valve. Since the pump is already actuated at the start of the control, the turn control can be quickly started without a delay in response to the turn control request. A hydraulic pressure, generated by the pump and adjusted by the hydraulic pressure control valves, is supplied to wheel brakes during the turn control. Thereupon, braking force differences are caused between the wheels of the vehicle, whereby the yaw moment of the vehicle is controlled.
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Citations
8 Claims
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1. A vehicle turn control apparatus, which includes a hydraulic circuit connecting a master cylinder connected to a brake pedal and wheel brakes provided corresponding individually to wheels of a vehicle, a pump adapted to generate and supply a hydraulic pressure to the hydraulic circuit when actuated, and a hydraulic pressure control valve unit arranged in the hydraulic circuit so as to be located between the pump and the wheel brakes and adapted to adjust the hydraulic pressure generated by the pump, and which supplies the hydraulic pressure, generated by the pump and adjusted by means of the hydraulic pressure control valve unit, to one or more required wheel brakes while there is a turn control request, said apparatus comprising:
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required control valve calculating means for deriving a required control valve for yaw moment control in accordance with an operating condition and/or behavior of the vehicle; pre-pressurization control means for actuating the pump when a first predetermined value is reached by the required control valve; and hydraulic pressure control means for controlling the operation of the hydraulic pressure control valve unit in accordance with the required control valve, the hydraulic pressure control means being adapted to discriminate the turn control request and start the operation control for the hydraulic pressure control valve unit when a second predetermined value greater than the first predetermined value is reached by the required controlled variable. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification