Wheel brake pressure controlling system in which vehicle operating conditions are calculated to alter wheel brake pressure
First Claim
1. A wheel brake pressure controlling system for a vehicle including a first source of pressure for generating a primary pressure corresponding to an operating force resulting from a driver'"'"'s operation, a second source of pressure for generating a secondary pressure independently from a driver'"'"'s operation, a brake pressure operating means for selectively supplying one of the primary and the secondary pressure to a plurality of wheel brakes of the vehicle, information processing means for estimating a turning of a vehicle and for judging whether or not the estimated turning of the vehicle lies in an over-steer or an under-steer region and whenever the turning of the vehicle is in an over-steer or under-steer region, for determining at least one wheel brake of the plurality of wheel brakes whose pressure is to be intensified, and output means for supplying the secondary pressure through the brake pressure operating means to the wheel brake which has been determined to have its pressure intensified;
- wherein the information processing means judges whether or not a turning of the vehicle lies in a reference region which is located outside the over- or under-steer region, drives the second source of pressure in order to generate the secondary pressure whenever the turning of the vehicle lies in the reference region, determines at least one wheel brake of the plurality of wheel brakes whose pressure is to be intensified, and automatically intensifies the pressure of the wheel brake.
2 Assignments
0 Petitions
Accused Products
Abstract
A wheel brake pressure controlling system includes a brake pressure operating circuit for selectively supplying to a wheel brake a primary pressure generated by a vacuum booster in response to the depression of a brake pedal and a secondary pressure generated by a hydraulic pressure pump which is driven by an electric motor, a microcomputer for estimating a turning of vehicle, determining if a turning of the vehicle is in a over- or under-steer region, and for determining a wheel brake, the pressure of which is to be intensified if the turning of the vehicle lies in the over- or under-steer region, and an output controller for supplying the secondary pressure to the wheel brake which has been thus determined, through the brake pressure operating circuit. The microcomputer determines if the turning of a vehicle occurs in a reference region located outside the over- or under-steer region, and whenever the turning of the vehicle occurs in the reference region, drives the second source of pressure for generating the secondary pressure, determines a wheel brake which is to be intensified, and automatically intensifies the wheel brake.
37 Citations
8 Claims
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1. A wheel brake pressure controlling system for a vehicle including a first source of pressure for generating a primary pressure corresponding to an operating force resulting from a driver'"'"'s operation, a second source of pressure for generating a secondary pressure independently from a driver'"'"'s operation, a brake pressure operating means for selectively supplying one of the primary and the secondary pressure to a plurality of wheel brakes of the vehicle, information processing means for estimating a turning of a vehicle and for judging whether or not the estimated turning of the vehicle lies in an over-steer or an under-steer region and whenever the turning of the vehicle is in an over-steer or under-steer region, for determining at least one wheel brake of the plurality of wheel brakes whose pressure is to be intensified, and output means for supplying the secondary pressure through the brake pressure operating means to the wheel brake which has been determined to have its pressure intensified;
wherein the information processing means judges whether or not a turning of the vehicle lies in a reference region which is located outside the over- or under-steer region, drives the second source of pressure in order to generate the secondary pressure whenever the turning of the vehicle lies in the reference region, determines at least one wheel brake of the plurality of wheel brakes whose pressure is to be intensified, and automatically intensifies the pressure of the wheel brake. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A wheel brake pressure controlling system for a vehicle including a first source of pressure for generating a primary pressure corresponding to an operating force resulting from a driver'"'"'s operation, a second source of pressure for generating a secondary pressure independently from a driver'"'"'s operation, a brake pressure operating means for selectively supplying one of the primary and secondary pressure to a plurality of wheel brakes of the vehicle, information processing means for estimating a turning of a vehicle and for judging whether the estimating turning of the vehicle lies in an over-steer or an under-steer region or not and whenever the turning of the vehicle is in an over-steer or an under-steer region, for determining at least one wheel brake of the plurality of wheel brakes whose pressure is to be intensified, and output means for supplying the secondary pressure through the brake pressure operating means to the wheel brake which has been determined to have its pressure intensified:
wherein the information processing means judges whether a turning of the vehicle lies in a reference region which is located outside the over- or under-steer region or not, and drives the second source of pressure in order to generate the secondary pressure whenever the turning of the vehicle lies in the reference region.
Specification