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US 12,194,968 B2Granted
Electronic brake system and operation method
AssigneeHl Mando Corporation
InventorJin Seok Kim
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to an electronic brake system and an operation method thereof. The electronic brake system includes a reservoir in which a fluid is stored, a hydraulic pressure supply device configured to generate a hydraulic pressure by operating a hydraulic piston in response to a signal from a pedal displacement sensor detecting a displacement of a brake pedal, a hydraulic control unit including a first hydraulic unit configured to control the hydraulic pressure to be transferred from the hydraulic pressure supply device to a first hydraulic circuit including two wheel cylinders, and a second hydraulic unit configured to control the hydraulic pressure to be transferred from the hydraulic pressure supply device to a second hydraulic circuit including other two wheel cylinders.
Claims19
An electronic brake system comprising:
- a reservoir in which a fluid is stored;
- a hydraulic pressure supply device configured to generate a hydraulic pressure by operating a hydraulic piston in response to a signal from a pedal displacement sensor detecting a displacement of a brake pedal;
- a hydraulic control unit comprising a first hydraulic unit configured to control the hydraulic pressure to be transferred from the hydraulic pressure supply device to a first hydraulic circuit comprising two wheel cylinders, and a second hydraulic unit configured to control the hydraulic pressure to be transferred from the hydraulic pressure supply device to a second hydraulic circuit comprising other two wheel cylinders;
- a master cylinder provided with at least one chamber and piston to pressurize and discharge the fluid, configured to provide a pedal feel in connection with the brake pedal, and connected to the first hydraulic circuit and the second hydraulic circuit;
- and
- an electronic control unit configured to control the hydraulic pressure supply device and valves,
- wherein the electronic control unit comprises:
- a first electronic control unit configured to control the first hydraulic unit;
- and a second electronic control unit configured to be operated separately from the first electronic control unit and to control the second hydraulic unit,
- wherein
- the master cylinder comprises
- a simulation chamber, a simulation piston connected to the brake pedal and provided in the simulation chamber, a master chamber, a master piston provided in the master chamber to be displaceable by a displacement of the simulation piston or a hydraulic pressure of the simulation chamber, and an elastic member provided between the simulation piston and the master piston, and
- wherein the electronic brake system further comprises:
- a reservoir flow path provided to communicate the master cylinder and the reservoir;
- a first backup flow path provided to connect the simulation chamber and the first hydraulic circuit;
- and
- a second backup flow path provided to connect the master chamber and the second hydraulic circuit.
14 more elements
An electronic brake system comprising:
- a simulator configured to provide a reaction force corresponding to a pressing force of a brake pedal;
- a hydraulic pressure supply device configured to generate a hydraulic pressure by operating a hydraulic piston in response to a signal from a pedal displacement sensor detecting a displacement of the brake pedal and comprising a first pressure chamber formed on one side of the hydraulic piston and a second pressure chamber formed on the other side of the hydraulic piston;
- a hydraulic control unit comprising a first hydraulic unit configured to control the hydraulic pressure to be transferred from the hydraulic pressure supply device to a first hydraulic circuit comprising two wheel cylinders, and a second hydraulic unit configured to control the hydraulic pressure to be transferred from the hydraulic pressure supply device to a second hydraulic circuit comprising other two wheel cylinders;
- and
- an electronic control unit comprising a first electronic control unit configured to control the hydraulic pressure supply device and the first hydraulic unit, and a second electronic control unit configured to be operated separately from the first electronic control unit and to control the hydraulic pressure supply device and the second hydraulic unit,
- wherein the hydraulic control unit comprises
- a first hydraulic flow path provided to communicate with the first pressure chamber, a second hydraulic flow path and a third hydraulic flow path provided to be branched from the first hydraulic flow path, a fourth hydraulic flow path provided to communicate with the second pressure chamber, a fifth hydraulic flow path and a sixth hydraulic flow path provided to be branched from the fourth hydraulic flow path, a seventh hydraulic flow path in which the third hydraulic flow path and the sixth hydraulic flow path join, an eighth hydraulic flow path and a ninth hydraulic flow path provided to be branched from the seventh hydraulic flow path, a tenth hydraulic flow path in which the eighth hydraulic flow path and the fifth hydraulic flow path join and connected to the first hydraulic circuit, an eleventh hydraulic flow path in which the ninth hydraulic flow path and the second hydraulic flow path join and connected to the second hydraulic circuit, and a twelfth hydraulic flow path provided to connect the second hydraulic flow path and the fifth hydraulic flow path, and
- wherein the simulator is provided to be hydraulically separated from the hydraulic control unit, the first hydraulic circuit, and the second hydraulic circuit.
5 more elements
Dependencies are inferred from the claim text.