Brake lining temperature prediction for a traction control system
First Claim
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1. A method of calculating a brake lining temperature prediction for the control of a braking system including a traction control system, comprising the steps of:
- a. determining the mode of a brake as being one of;
1. non-braking and non-traction control,2. braking during non-adaptive braking system operation,
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Abstract
A brake control system which provides both adaptive braking operation and traction control operation includes a brake lining temperature prediction mechanism which enables the control system either to permit traction control operation or to disable traction control operation so that the brake linings will not be worn out prematurely by traction control operation when the linings are above a temperature threshold.
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Citations
33 Claims
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1. A method of calculating a brake lining temperature prediction for the control of a braking system including a traction control system, comprising the steps of:
a. determining the mode of a brake as being one of; 1. non-braking and non-traction control, 2. braking during non-adaptive braking system operation, - View Dependent Claims (3, 5, 11, 12, 13, 15, 16, 17, 18, 19, 20, 21, 23, 24, 25)
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2. braking during adaptive braking system operation, andtraction control system operation,
b. calculating a temperature prediction based on cooling of the brake, when mode a.1. occurs, c. measuring actual braking pressure and calculating a steady state temperature which is then utilized to calculate a temperature prediction based on a heating profile of the brake, when mode a.2. occurs, d. utilizing an estimation of braking pressure and vehicle deceleration for the calculation of a steady state temperature and calculating a temperature prediction based on the heating profile of the brake, when mode a.3. occurs, e. utilizing estimated braking pressure and vehicle wheel speed for the calculation of a steady state temperature which is then utilized to calculate a temperature prediction based on the heating profile of the brake, when mode a.4. occurs, and f. comparing the temperature prediction with a temperature limit in order to effect one of permitting and not permitting operation of the traction control system.
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14. In a wheeled vehicle having means for supplying pressurized brake fluid to actuate the associated wheel brakes of the vehicle, a brake control system for providing both adaptive braking operation and traction control operation of at least one selected wheel brake of the vehicle, said control system calculating a brake lining temperature prediction and including:
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a. means for determining the mode of the selected wheel brake as being one of; 1. non-braking and non-traction control, 2. braking during non-adaptive braking operation, 3. braking during adaptive braking operation, and 4. traction control operation, b. means for calculating a temperature prediction based on cooling of the selected wheel brake, when mode a.1. occurs, c. means for measuring actual braking pressure and calculating a steady state temperature which is utilized to calculate a temperature prediction based on a heating profile of the brake, when mode a.2. occurs, d. means utilizing estimated braking pressure and vehicle deceleration for calculating a steady state temperature and calculating a temperature prediction based on the heating profile of the brake, when mode a.3. occurs, e. means utilizing estimated braking pressure and vehicle wheel speed for calculating a steady state temperature and calculating a temperature prediction based on the heating profile of the brake, when mode a.4. occurs, and f. means for comparing the respective temperature prediction with a temperature limit in order to determine one of permitting and not permitting traction control operation by the control system.
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22. A method of calculating a brake lining temperature prediction for the control of a braking system including a traction control system, comprising the steps of:
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a. determining the mode of a brake as being one of; 1. non-braking and non-traction control, and 2. traction control system operation, b. calculating a temperature prediction based on cooling of the brake when mode a.1. occurs, c. utilizing estimated braking pressure and vehicle wheel speed for the calculation of a temperature prediction based on a heating profile of a brake when mode a.2. occurs, d. comparing the temperature prediction with a temperature limit in order to determine one of permitting and not permitting operation of the traction control system, and e. controlling operation of the braking system.
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26. A method of calculating a brake lining temperature prediction for the control of a braking system including a traction control system, comprising the steps of:
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a. calculating a temperature prediction based on cooling of the brake, as a result of non-braking and non-traction control of the braking system, b. comparing the temperature prediction with a temperature limit in order to determine one of permitting operation and not permitting operation of the traction control system, and c. controlling operation of the braking system. - View Dependent Claims (28, 30, 31, 33)
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27. A method of calculating a brake lining temperature prediction for the control of a braking system including a traction control system, comprising the steps of:
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a. utilizing an estimation of braking pressure and vehicle deceleration to calculate a temperature prediction based on a heating profile of a brake, as a result of braking during adaptive braking system operation, comparing the temperature prediction with a temperature limit in order to determine one of permitting operation and not permitting operation of the traction control system, and c. controlling operation of the braking system. - View Dependent Claims (29)
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32. A method of calculating a brake lining temperature prediction for the control of a braking system including a traction-control system, comprising the steps of:
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a. measuring actual braking pressure and calculating a temperature prediction based on a heating profile of the brake, as a result of non-adaptive and non-traction control braking during braking system operation, b. comparing the temperature prediction with a temperature limit in order to determine one of permitting operation and not permitting operation of the traction control system, and c. controlling operation of the braking system.
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Specification