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US 10,093,295 B2Granted
Electric brake system
AssigneeMando Corporation
InventorsHyun-Ho Kim, In-Wook Jeon
Life of this patent
Estimating the term…
Abstract
An electric brake system is disclosed. The electric brake system includes a master cylinder configured to discharge oil according to a pedal effort of a brake pedal, a simulation device provided with a simulator valve provided at a flow path connecting a simulation chamber, which is connected to the master cylinder to accommodate oil therein, to a first reservoir for storing oil therein so as to provide a reaction force according to the pedal effort of the brake pedal, and an inspection valve provided at a flow path connecting the first reservoir to the master cylinder or at a flow path connecting the master cylinder to the simulation device.
Claims17
An electric brake system comprising:
- a master cylinder configured to discharge oil according to a pedal effort of a brake pedal;
- a simulation device provided with a simulator valve provided at a flow path connecting a simulation chamber, which is connected to the master cylinder to accommodate oil therein, to a reservoir for storing oil therein so as to provide a reaction force according to the pedal effort of the brake pedal;
- and
- an inspection valve provided at a flow path connecting the master cylinder to a wheel cylinder,
- wherein the simulator valve is provided to open the flow path connecting the simulation chamber to the reservoir in a normal mode, and to block the flow path connecting the simulation chamber to the reservoir in an abnormal mode, and
- wherein the inspection valve is provided to open the flow path connecting the master cylinder to the simulation chamber in a braking mode, and to block the flow path connecting the master cylinder to the simulation chamber in an inspection mode.
3 more elements
An electric brake system comprising:
- a reservoir configured to store oil;
- a master cylinder, in which a first hydraulic port and a second hydraulic port are formed, connected to the reservoir, provided with one or more pistons, and configured to discharge oil according to a pedal effort of a brake pedal;
- a pedal displacement sensor configured to sense a displacement of the brake pedal;
- a first backup flow path configured to connect the first hydraulic port to a wheel cylinder;
- a second backup flow path configured to connect the second hydraulic port to a wheel cylinder;
- a first cut valve provided at the first backup flow path to control an oil flow therein;
- a second cut valve provided at the second backup flow path to control an oil flow therein;
- a simulation device provided at a flow path branching from the first backup flow path, provided with a simulator valve provided at a flow path connecting a simulation chamber, which accommodates oil, to a reservoir, which stores oil, and configured to provide a reaction force according to the pedal effort of the brake pedal;
- an inspection valve provided at the first backup flow path, wherein the inspection valve is provided at a middle of a flow path that branches to the first hydraulic port and the simulation device;
- a hydraulic pressure supply device configured to generate hydraulic pressure using a rotational force of a motor that is activated in response to an electrical signal output from the pedal displacement sensor;
- a pressure sensor provided between the inspection valve and a flow path branching to the simulation device;
- a first hydraulic flow path connected to the hydraulic pressure supply device and connected to the first backup flow path;
- a second hydraulic flow path connected to the hydraulic pressure supply device and connected to the second backup flow path;
- a hydraulic control unit connected to the first and second hydraulic flow paths, configured to deliver the hydraulic pressure delivered from the hydraulic pressure supply device to a wheel cylinder provided at each of wheels, and including first and second hydraulic circuits respectively connected to different wheel cylinders;
- and
- an electronic control unit configured to control the motor and valves on the basis of hydraulic pressure information and displacement information of the brake pedal,
- wherein the simulator valve is provided to open a flow path connecting the simulation chamber to the reservoir in a normal mode, and to block the flow path connecting the simulation chamber to the reservoir in an abnormal mode, and
- wherein the inspection valve is provided to open a flow path connecting the master cylinder to the simulation chamber in a braking mode, and to block the flow path connecting the master cylinder to the simulation chamber in an inspection mode.
15 more elements
Dependencies are inferred from the claim text.