Pressure boost for vehicle rear brake circuits
First Claim
Patent Images
1. A rear brake boost system for a vehicle comprising:
- a front wheel brake circuit;
a rear wheel brake circuit;
a plurality of wheel speed sensors, with at least one front wheel speed sensor and at least one rear wheel speed sensor; and
a control unit connected to said front and rear wheel brake circuits and said wheel speed sensors, said control unit operative during a brake application to monitor a front wheel speed and a rear wheel speed, said control unit further operable to increase the pressure applied to said rear wheel brakes to a value that is greater than the pressure applied to said front wheel brakes when said rear wheel speed exceeds said front wheel speed.
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Accused Products
Abstract
Under certain operating conditions, the pressure applied to a vehicle rear brake circuit is increased above the pressure applied to the vehicle front brake circuit to enhance stopping of the vehicle.
40 Citations
21 Claims
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1. A rear brake boost system for a vehicle comprising:
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a front wheel brake circuit; a rear wheel brake circuit; a plurality of wheel speed sensors, with at least one front wheel speed sensor and at least one rear wheel speed sensor; and a control unit connected to said front and rear wheel brake circuits and said wheel speed sensors, said control unit operative during a brake application to monitor a front wheel speed and a rear wheel speed, said control unit further operable to increase the pressure applied to said rear wheel brakes to a value that is greater than the pressure applied to said front wheel brakes when said rear wheel speed exceeds said front wheel speed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for controlling the application of vehicle rear brakes for a vehicle having front and rear brake circuits, the method comprising the steps of:
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(a) providing a plurality of wheel speed sensors, with at least one front wheel speed sensor and at least one rear wheel speed sensor and a control unit connected to the front and rear wheel brake circuits and the wheel speed sensors; (b) monitoring the front and rear wheel speeds; (c) comparing the monitored front and wheel speeds; and (d) increasing the pressure applied to the rear wheel brakes to a value that is greater than the pressure applied to the front wheel brakes, during a brake application and upon determining that the rear wheel speed exceeds the front wheel speed. - View Dependent Claims (17)
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18. A method for controlling the application of vehicle rear brakes for a vehicle having front and rear brake circuits, the method comprising the steps of:
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(a) providing a plurality of wheel speed sensors, with at least one front wheel speed sensor and at least one rear wheel speed sensor and a control unit connected to the front and rear wheel brake circuits and the wheel speed sensors; (b) monitoring the front and rear wheel speeds; and (c) increasing the pressure applied to the rear wheel brakes to a value that is greater than the pressure applied to the front wheel brakes, during a braking application and when the rear wheel speed exceeds a threshold that is a function of the front wheel speed. - View Dependent Claims (19, 20, 21)
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Specification