Electric brake system and operating method thereof
AssigneeHl Mando Corporation
InventorsHyojin Jeong, Seong Ho Choi, Jin Seok Kim, Byung Ki Kim
Life of this patent
Estimating the term…
Abstract
Provided are an electronic brake system and a method of operating the same, capable of performing a normal operation mode and an abnormal operation mode by including an integrated master cylinder configured to discharge a pressurizing medium according to a displacement of a brake pedal while providing a driver with a pedal fee, a liquid pressure supply device configured to generate a liquid pressure by operating a hydraulic piston according to an electrical being output on the basis of the displacement of the brake pedal, and a hydraulic control unit configured to a liquid pressure of a pressurizing medium to be supplied to each wheel cylinder.
Claims15
An electronic brake system comprising:
- a reservoir in which a pressurizing medium is stored;
- an integrated master cylinder including a master chamber, a master piston provided in the master chamber and configured to be displaced by a brake pedal, first and second simulation chambers, a reaction piston provided in the first simulation chamber and configured to be displaced by a liquid pressure of a pressurizing medium accommodated in the master chamber, a damping piston provided in the second simulation chamber and configured to be displaced by displacement of the reaction piston, and an elastic member provided between the reaction piston and the damping piston, wherein the elastic member contacts a surface of the reaction piston so that the elastic member is seated on a surface of the damping piston;
- a liquid pressure supply device configured to generate a liquid pressure by operating a hydraulic piston according to an electrical signal being output in response to the displacement of the brake pedal;
- and
- a hydraulic control unit having a first hydraulic circuit for controlling a liquid pressure transferred to two wheel cylinders of a plurality of wheel cylinders and a second hydraulic circuit for controlling a liquid pressure transferred to two other wheel cylinders of the plurality of wheel cylinders.
An electronic brake system comprising:
- a reservoir in which a pressurizing medium is stored;
- an integrated master cylinder including a master chamber, a master piston provided in the master chamber and configured to be displaced by a brake pedal, first and second simulation chambers, a reaction piston provided in the first simulation chamber and configured to be displaced by a liquid pressure of a pressurizing medium accommodated in the master chamber, a damping piston provided in the second simulation chamber and configured to be displaced by displacement of the reaction piston, and an elastic member provided between the reaction piston and the damping piston;
- a liquid pressure supply device configured to generate a liquid pressure by operating a hydraulic piston according to an electrical signal being output in response to the displacement of the brake pedal;
- and
- a hydraulic control unit having a first hydraulic circuit for controlling a liquid pressure transferred to two wheel cylinders of a plurality of wheel cylinders and a second hydraulic circuit for controlling a liquid pressure transferred to two other wheel cylinders of the plurality of wheel cylinders,
- wherein the integrated master cylinder further comprises:
- a simulation fluid path configured to communicate the first simulation chamber with the second simulation chamber;
- and
- a simulator valve provided on the simulation fluid path and configured to control a flow of pressurizing medium through the simulation fluid path.
Dependencies are inferred from the claim text.