Methods and apparatus to detect warped rotors based on brake pressure
AssigneeFord Global Technologies, LLC
InventorRoss Dykstra Pursifull
Life of this patent
Estimating the term…
Abstract
Methods and apparatus are disclosed that detect warped rotors. An example apparatus includes a controller configured to receive a brake pressure and one or more wheel parameters of a vehicle associated with a first braking event, determine a presence of a warped rotor based on a comparison of the brake pressure to a threshold pressure, and identify a wheel of the vehicle associated with the warped rotor based on the brake pressure and the one or more wheel parameters.
Claims14
An apparatus comprising:
- a controller configured to:
- receive a brake pressure and a wheel angle of a vehicle associated with a first braking event;
- determine a presence of a warped rotor based on a comparison of the brake pressure to a threshold pressure;
- and
- identify a wheel of the vehicle associated with the warped rotor based on the brake pressure and the wheel angle by:
- receiving, for each wheel of a vehicle, brake pressure and wheel angle data associated with one or more subsequent braking events;
- correlating the brake pressure with the wheel angle of each wheel for each of the one or more subsequent braking events;
- and
- associating the wheel having a maximum pressure occurring at a same wheel angle as the first braking event in the one or more subsequent braking events with the warped rotor.
A tangible computer readable storage medium comprising instructions that, when executed, cause a machine to at least:
- receive a brake pressure and a wheel angle of a vehicle associated with a first braking event;
- determine a presence of a warped rotor based on a comparison of the brake pressure to a threshold pressure;
- and
- identify a wheel of the vehicle associated with the warped rotor based on the brake pressure and the wheel angle by:
- receiving, for each wheel of a vehicle, brake pressure and wheel angle data associated with one or more subsequent braking events;
- correlating the brake pressure with the wheel angle of each wheel for each of the one or more subsequent braking events;
- and
- associating the wheel having a maximum pressure occurring at a same wheel angle as the first braking event in the one or more subsequent braking events with the warped rotor.
A method comprising:
- receiving a brake pressure and a wheel angle of a vehicle associated with a first braking event;
- determining a presence of a warped rotor based on a comparison of the brake pressure to a threshold pressure;
- and
- identifying a wheel of the vehicle associated with the warped rotor based on the brake pressure and the wheel angle by:
- receiving, for each wheel of a vehicle, brake pressure and wheel angle data associated with one or more subsequent braking events;
- correlating the brake pressure with the wheel angle of each wheel for each of the one or more subsequent braking events;
- and
- associating the wheel having a maximum pressure occurring at a same wheel angle as the first braking event in the one or more subsequent braking events with the warped rotor.
Dependencies are inferred from the claim text.