Abstract: An electronic hydraulic brake device includes a main braking unit configured to provide a braking fluid to a plurality of wheel cylinder units by driving of a motor; a storage unit connected to the main braking unit and configured to store the braking fluid; and an auxiliary braking unit connected to the main braking unit and the storage unit and configured to provide the braking fluid to some of the plurality of wheel cylinder units when an operation error of the main braking unit occurs, so that braking of a vehicle may be stably performed by the auxiliary braking unit even though the operation error of the main braking unit occurs.

Abstract: A brake device includes a first flow path unit guiding a braking hydraulic pressure by connecting some of wheel cylinder units and a master cylinder unit; a second flow path unit guiding a braking hydraulic pressure by connecting the others of the wheel cylinder units and the master cylinder unit; a third flow path unit connecting a reservoir and pump units, and connected with the first flow path unit; a fourth flow path unit connecting the reservoir and the pump units, and connected with the second flow path unit; a fifth flow path unit connecting the reservoir and the first flow path unit; a sixth flow path unit connecting the reservoir and the second flow path unit; a seventh flow path unit selectively connecting the first and second flow path units; and an eighth flow path unit connecting the second flow path unit and the reservoir.

Abstract: A braking apparatus and a braking control method for a vehicle, wherein the braking apparatus includes an inlet valve for interrupting a braking hydraulic pressure supplied to a wheel cylinder of the vehicle, a regenerative braking unit for performing the regenerative braking of the vehicle, and a control unit for controlling the braking hydraulic pressure supplied to the wheel cylinder by controlling the inlet valve so that hydraulic braking force determined by subtracting a hydraulic braking force generated by the regenerative braking unit from a demand braking force requested by a driver is generated. The control unit controls the hydraulic braking pressure supplied to the wheel cylinder by controlling the inlet valve on the basis of changes in the vehicle speed and the regenerative braking force of the vehicle.

Abstract: A pressure control valve for a vehicle is provided. The pressure control valve for a vehicle includes: a valve body having an oil inlet part into which oil discharged from a wheel cylinder flows; a driving part installed in the valve body; a plunger connected to the driving part and movably installed inside the valve body; a valve seat disposed inside the valve body and having an oil passage part formed such that the oil flowing into the oil inlet part is supplied to an accumulator; a first elastic member installed to apply an elastic force to the plunger such that the plunger returns to an original position; an opening and closing member installed in the oil passage part to open the oil passage part when the opening and closing member is pressed by the plunger; and a second elastic member applying an elastic force to the opening and closing member such that the opening and closing member closes the oil passage part.

Abstract: An electronic hydraulic brake device includes a main braking unit configured to provide a braking fluid to a plurality of wheel cylinder units by driving of a motor; a storage unit connected to the main braking unit and configured to store the braking fluid; and an auxiliary braking unit connected to the main braking unit and the storage unit and configured to provide the braking fluid to some of the plurality of wheel cylinder units when an operation error of the main braking unit occurs, so that braking of a vehicle may be stably performed by the auxiliary braking unit even though the operation error of the main braking unit occurs.

Abstract: A brake apparatus for a vehicle may include a master cylinder unit including a master cylinder, which has first and second outlets and is configured to generate braking hydraulic pressure by receiving the operating force of a brake pedal, and a storage tank configured to store brake oil and supply the same to the master cylinder; a hydraulic pump unit, which is configured to generate braking hydraulic pressure and which includes multiple hydraulic pumps installed to alternately perform a suction operation and a discharge operation; a wheel cylinder unit configured to brake vehicle wheels by receiving the brake hydraulic pressure from the master cylinder unit or the hydraulic pump unit; and first and second flow path units configured to supply the braking hydraulic pressure to the wheel cylinder unit by respectively connecting the first outlet and the second outlet of the master cylinder unit with the wheel cylinder unit.

Abstract: A brake device includes a first flow path unit guiding a braking hydraulic pressure by connecting some of wheel cylinder units and a master cylinder unit; a second flow path unit guiding a braking hydraulic pressure by connecting the others of the wheel cylinder units and the master cylinder unit; a third flow path unit connecting a reservoir and pump units, and connected with the first flow path unit; a fourth flow path unit connecting the reservoir and the pump units, and connected with the second flow path unit; a fifth flow path unit connecting the reservoir and the first flow path unit; a sixth flow path unit connecting the reservoir and the second flow path unit; a seventh flow path unit selectively connecting the first and second flow path units; and an eighth flow path unit connecting the second flow path unit and the reservoir.

Abstract: A brake apparatus for a vehicle may include a master cylinder unit including a master cylinder, which has first and second outlets and is configured to generate braking hydraulic pressure by receiving the operating force of a brake pedal, and a storage tank configured to store brake oil and supply the same to the master cylinder; a hydraulic pump unit, which is configured to generate braking hydraulic pressure and which includes multiple hydraulic pumps installed to alternately perform a suction operation and a discharge operation; a wheel cylinder unit configured to brake vehicle wheels by receiving the brake hydraulic pressure from the master cylinder unit or the hydraulic pump unit; and first and second flow path units configured to supply the braking hydraulic pressure to the wheel cylinder unit by respectively connecting the first outlet and the second outlet of the master cylinder unit with the wheel cylinder unit.

Abstract: A braking apparatus and a braking control method for a vehicle, wherein the braking apparatus includes an inlet valve for interrupting a braking hydraulic pressure supplied to a wheel cylinder of the vehicle, a regenerative braking unit for performing the regenerative braking of the vehicle, and a control unit for controlling the braking hydraulic pressure supplied to the wheel cylinder by controlling the inlet valve so that hydraulic braking force determined by subtracting a hydraulic braking force generated by the regenerative braking unit from a demand braking force requested by a driver is generated. The control unit controls the hydraulic braking pressure supplied to the wheel cylinder by controlling the inlet valve on the basis of changes in the vehicle speed and the regenerative braking force of the vehicle.

Abstract: A pressure control valve for a vehicle is provided. The pressure control valve for a vehicle includes: a valve body having an oil inlet part into which oil discharged from a wheel cylinder flows; a driving part installed in the valve body; a plunger connected to the driving part and movably installed inside the valve body; a valve seat disposed inside the valve body and having an oil passage part formed such that the oil flowing into the oil inlet part is supplied to an accumulator; a first elastic member installed to apply an elastic force to the plunger such that the plunger returns to an original position; an opening and closing member installed in the oil passage part to open the oil passage part when the opening and closing member is pressed by the plunger; and a second elastic member applying an elastic force to the opening and closing member such that the opening and closing member closes the oil passage part.

Abstract: An initialization method for an EMB may include: opening an in-valve for controlling a flow path through which brake oil is introduced from a master cylinder, closing an out-valve for controlling a flow path through which the brake oil is transferred to an accumulator part, and driving a motor to move a master piston forward; when the master piston is moved by a preset distance after coming in contact with a slave piston which is brought in contact with an inner pad, closing the in-valve and driving the motor to move the master piston backward; when the contact between the master piston and the slave piston is released, determining whether a gap between the master piston and the slave piston is equal to or more than a preset gap; and when the gap is equal to or more than the preset gap, ending initialization of the EMB.

Abstract: A brake device for a vehicle may include: a master cylinder generating hydraulic pressure using pressure applied to a pedal; a pedal simulator connected to the master cylinder and providing a pedal force to the pedal; a pair of diverging line parts connected to the master cylinder and receiving hydraulic pressure; a front wheel line part connected to the diverging line part and transferring hydraulic pressure to a front wheel part; a rear wheel line part connected to the front wheel line part and transferring hydraulic pressure to a rear wheel part; and an electric booster installed between the front wheel line part and the front wheel part, and providing hydraulic pressure.

Abstract: A brake device for a vehicle may include: a master cylinder amplifying oil pressure; a pedal driving the master cylinder; an oil pressure guide part guiding the oil pressure generated from the master cylinder to a wheel cylinder; an electric motor pump supplying oil to the oil pressure guide part; and an auxiliary supply part supplying oil to the electric motor pump.

Abstract: A brake device for a vehicle may include: a master cylinder generating hydraulic pressure using pressure applied to a pedal; a pedal simulator connected to the master cylinder and providing a pedal force to the pedal; a pair of diverging line parts connected to the master cylinder and receiving hydraulic pressure; a front wheel line part connected to the diverging line part and transferring hydraulic pressure to a front wheel part; a rear wheel line part connected to the front wheel line part and transferring hydraulic pressure to a rear wheel part; and an electric booster installed between the front wheel line part and the front wheel part, and providing hydraulic pressure.

Abstract: An initialization method for an EMB may include: opening an in-valve for controlling a flow path through which brake oil is introduced from a master cylinder, closing an out-valve for controlling a flow path through which the brake oil is transferred to an accumulator part, and driving a motor to move a master piston forward; when the master piston is moved by a preset distance after coming in contact with a slave piston which is brought in contact with an inner pad, closing the in-valve and driving the motor to move the master piston backward; when the contact between the master piston and the slave piston is released, determining whether a gap between the master piston and the slave piston is equal to or more than a preset gap; and when the gap is equal to or more than the preset gap, ending initialization of the EMB.

Abstract: The present invention relates to a braking hydraulic circuit for linear pressure reduction of a front/rear wheel braking liquid pressure in a vehicle. On a liquid pressure return line formed between wheel cylinders and a master cylinder, a two-system liquid pressure control circuit separately passes liquid pressures to be discharged from the wheel cylinders and then unifies the liquid pressures. The liquid pressure control circuit has normal open type solenoid valves and normal close type solenoid valves. Therefore, at the time of implementation of ABS (Antilock Brake System) or TCS (Traction Control System), linear control of a front/rear wheel braking liquid pressure can be realized. In addition, a difference in pressure intensification gradient according to a difference in generation time between the front and rear wheels can be eliminated.

Abstract: A breaking hydraulic circuit for linear pressure reduction of a front/rear wheel breaking liquid pressure in a vehicle includes a liquid pressure return line formed between wheel cylinders and a master cylinder, and a two-system liquid pressure control circuit separately passing liquid pressures to be discharged from the wheel cylinders and then unifies the liquid pressures. The breaking hydraulic circuit has normal open type solenoid valves and normal close type solenoid valves. In the breaking hydraulic circuit, linear control of a front/rear wheel breaking liquid pressure is realized at a time of implementation of ABS (Antilock Brake System) or TCS (Traction Control System), and a difference in pressure intensification gradient according to a difference in generation time between the front and rear wheels is eliminated.