Electric hydraulic brake

An electric hydraulic brake comprising:

• a plurality of wheel brakes configured to supply braking force to wheels of a vehicle;
• a reservoir storing brake oil;
• a master cylinder connected to the reservoir and configured to generate hydraulic pressure in cooperation with a first motor;
• an auxiliary actuator including a second motor and a pump unit having a plurality of piston pumps linked with the second motor, and configured to transmit a hydraulic pressure generated by the pump unit to the plurality of wheel brakes when the master cylinder malfunctions;
• a hydraulic circuit configured to selectively transmit the hydraulic pressure to the plurality of wheel brakes, and including a front wheel hydraulic circuit configured to transmit the hydraulic pressure to a pair of front wheel brakes, a rear wheel hydraulic circuit configured to transmit the hydraulic pressure to a pair of rear wheel brakes, and a plurality of solenoid valves;
• a first controller configured to control the first motor, the second motor, and the front hydraulic circuit, and the rear hydraulic circuit in accordance with braking input;
• and
• a second controller configured to control the first motor, the second motor, and the front wheel hydraulic circuit when the first controller malfunctions,
• wherein the pump unit includes a front wheel pump unit connected to the front wheel hydraulic circuit and a rear wheel pump unit connected to the rear wheel hydraulic circuit,
• wherein the front wheel pump unit includes piston pumps that are the same as or more than the rear wheel pump unit in number,
• wherein the front wheel pump unit is configured to discharge a greater average discharge amount more continuously than the rear wheel pump unit.