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US 2026/0159063 A1Published application
Brake system and method of control
AssigneeArvinMeritor Technology, LLC
InventorsDaniel Philpott, Mark Ugo
Life of this patent
Estimating the term…
Abstract
A brake system and method of control. A brake pad assembly is actuatable from a retracted position to an extended position with a fluid. The method includes determining whether a running clearance is acceptable based on a first fluid supply pressure associated with the brake pad assembly being in a retracted position and a second fluid supply pressure associated with the brake pad assembly being in an extended position.
Claims23
A method of controlling a friction brake of a vehicle, comprising:
- determining a first supply pressure of a fluid of a fluid power system when a brake pad assembly is in a retracted position;
- actuating the brake pad assembly from the retracted position to an extended position with the fluid;
- determining a second supply pressure of the fluid when the brake pad assembly is in the extended position;
- and
- determining whether a running clearance is acceptable based on the first supply pressure and the second supply pressure.
2 more elements
A brake system comprising:
- a friction brake that comprises:
- a brake pad assembly that is moveable between a retracted position and an extended position;
- and
- a brake actuator that is configured to actuate the brake pad assembly;
- a fluid power system that is fluidly connectable to the brake actuator, the fluid power system comprising:
- a storage tank that receives pressurized fluid;
- a pressure sensor that measures pressure of the pressurized fluid;
- and
- a control valve that is fluidly connected to the storage tank and that provides pressurized fluid to the brake actuator when in an open position;
- and
- a controller configured to:
- receive a signal from the pressure sensor that is indicative of a first supply pressure of the pressurized fluid when the brake pad assembly is in the retracted position;
- open the control valve to provide pressurized fluid to the brake actuator, thereby actuating the brake pad assembly from the retracted position to the extended position;
- receive the signal from the pressure sensor that is indicative of a second supply pressure of the pressurized fluid when the brake pad assembly is in the extended position;
- and
- provide a running clearance notification based on the first supply pressure and the second supply pressure.
13 more elements
A method of controlling a friction brake of a vehicle, comprising:
- increasing a pressure of a fluid in a storage tank of a fluid power system when a first supply pressure does not exceed a lower threshold;
- decreasing the pressure of the fluid in the storage tank when the first supply pressure exceeds an upper threshold;
- maintaining the pressure of the fluid in the storage tank such that the pressure of fluid in the storage tank is not increased;
- determining the pressure of the fluid in the storage tank after maintaining pressure;
- and
- conducting a leak check of the fluid power system by providing the fluid from the storage tank to the friction brake, determining the pressure of the fluid in the storage tank after providing the fluid to the friction brake, and comparing the pressure of the fluid in the storage tank after maintaining pressure to the pressure of the fluid in the storage tank after providing fluid to the friction brake.
3 more elements
A brake control arrangement comprising:
- a controller configured to:
- receive an input signal from a pressure sensor, the input signal being indicative of a first supply pressure of a pressurized fluid when a brake pad assembly is in a retracted position;
- provide an output signal configured to open a control valve to provide the pressurized fluid to a brake actuator to actuate the brake pad assembly from the retracted position to the extended position;
- receive a second input signal from the pressure sensor, the second input signal being indicative of a second supply pressure of the pressurized fluid when the brake pad assembly is in the extended position;
- and
- output a running clearance notification based on the first supply pressure and the second supply pressure.
3 more elements
Dependencies are inferred from the claim text.