Abstract: Disclosed herein is a solenoid valve for brake systems which improves an assembly structure of components constituting the valve to enhance durability and control performance of the valve. The solenoid valve includes a sheet housing, a valve sheet, a sleeve, a magnetic core and an armature, the armature includes an upper body and a lower body separated from each other, the upper body is formed of a magnetic material and has an external diameter corresponding to the internal diameter of the sleeve so as to be guided and moved forward and backward within the sleeve, the lower body is formed of a non-magnetic material, is provided with an opening and closing part to open and close an orifice of the valve sheet, and elastic members to press the upper body and the lower body in the facing directions to move the upper body and the lower body together are provided.

Abstract: Disclosed is an electronic control brake system capable of ensuing pedal force upon regenerative braking or brake-by-wire control. The electronic control brake system having a simulation function includes a master cylinder for forming oil pressure corresponding to displacement of a brake pedal, an oil tank for providing oil to the master cylinder, a cut-off valve installed on a hydraulic supply pipe that connects an inlet of the master cylinder with an inlet valve of a hydraulic brake, an oil return pipe for connecting an outlet valve of the hydraulic brake with an inlet of the oil tank, and a simulation valve installed on a differential adjusting pipe, which connects the hydraulic supply pipe with the oil return pipe, to generate pedal force.

Abstract: Disclosed herein is an electro-hydraulic brake system. The electro-hydraulic brake system includes a master cylinder to transmit brake oil, a high-pressure accumulator to transmit brake oil independently of the master cylinder, first and second circuits connected respectively to the master cylinder, at least one first wheel to be braked by the first circuit, and at least one second wheel to be braked by the second circuit. The first circuit is connected to the high-pressure accumulator, to control the first wheel. The second circuit is connected to the first circuit, to control the second wheel.

Abstract: Disclosed herein is an electro-hydraulic brake system. The electro-hydraulic brake system includes a master cylinder having a first cylinder and a second cylinder, a hydraulic power unit to supply brake oil into the respective first and second cylinders, and a first wheel and a second wheel connected respectively to the first cylinder and the second cylinder. The first wheel and the second wheel are independently controlled by hydraulic pressure generated in the first cylinder and the second cylinder.

Abstract: A braking system for a vehicle, which can prevent an alteration in brake pedal toe force when a brake hydraulic pressure is increased or decreased based on a regenerative braking force obtained by a drive motor in an electric vehicle or hybrid vehicle, and a braking method thereof.

Abstract: Disclosed herein is an electronic control brake system that has a compact structure while rapidly forming an oil pressure during active control and reducing pressure pulsation, simultaneously. The electronic control brake system includes a master cylinder assembly to provide braking force, a plurality of brake cylinders to achieve braking, first and second hydraulic circuits connecting the master cylinder and the plurality of brake cylinders to form a closed circuit, a pump unit installed in the first and second hydraulic circuits to achieve active control, and a motor to drive the pump unit.

Abstract: Disclosed is an electronic control brake system capable of ensuing pedal force upon regenerative braking or brake-by-wire control. The electronic control brake system having a simulation function includes a master cylinder for forming oil pressure corresponding to displacement of a brake pedal, an oil tank for providing oil to the master cylinder, a cut-off valve installed on a hydraulic supply pipe that connects an inlet of the master cylinder with an inlet valve of a hydraulic brake, an oil return pipe for connecting an outlet valve of the hydraulic brake with an inlet of the oil tank, and a simulation valve installed on a differential adjusting pipe, which connects the hydraulic supply pipe with the oil return pipe, to generate pedal force.

Abstract: Disclosed is a vehicle brake device of an electronic hydraulic brake system.

Abstract: Disclosed herein is a mold for manufacturing a housing of a hydraulic unit of an anti-lock brake system for vehicles. The housing has a plurality of bores formed therein such that components, such as a plurality of valves, accumulators, hydraulic pumps, and a driving motor, and a plurality of connection pipes are mounted to the housing through the bores.

Abstract: A pump for a brake system for increasing sealing performance between a piston and a bore as well as motion performance and durability of the piston and facilitating assembling efficiency of the piston. The pump includes a bore formed in a modulator block and connected to a suction port and discharge port, a piston installed in the bore to perform rectilinear reciprocating motions and having an oil flow path to move oil suctioned through the suction port toward the discharge port, an inlet valve to open and close the oil flow path in accordance with the motions of the piston, an outlet valve to selectively allow the discharge of compressed oil, and a fixing unit having a guide member provided around the piston to be coupled to the bore and adapted to guide the motions of the piston and a sealing member provided around the piston to be coupled to the bore and adapted to keep the bore and the piston in an air-tightness state.

Abstract: A braking system for a vehicle, which can prevent an alteration in brake pedal toe force when a brake hydraulic pressure is increased or decreased based on a regenerative braking force obtained by a drive motor in an electric vehicle or hybrid vehicle, and a braking method thereof.

Abstract: An electronically controlled brake system having a structure capable of achieving a rapid increase in the pressure of brake oil while reducing the operation time of each pump during an active control operation. The electronically controlled brake system comprises a master cylinder assembly to provide a braking force, a plurality of brake cylinders to perform a braking operation, first and second hydraulic circuits to connect the master cylinder assembly to the plurality of brake cylinders, to define a closed circuit, and first and second pump units provided, respectively, at the first and second hydraulic circuits, to realize an active control operation. The first hydraulic circuit includes a pair of suction lines to connect a suction side of the first pump unit to the master cylinder assembly, and the second hydraulic circuit includes a pair of suction lines to connect a suction side of the second pump unit to the master cylinder assembly, each suction line being provided with a suction-side solenoid valve.

Abstract: An anti-lock brake system which is integrally organized with a rolling-prevention solenoid valve having a relief function in a single modulator block in order to prevent a vehicle from rolling rearward on a slope upon starting of the vehicle. The anti-lock brake system, which comprises a master cylinder, a wheel cylinder, NO type and NC type solenoid valves to control flow of brake fluid, a hydraulic pump, and a low-pressure accumulator, further comprises a rolling-prevention solenoid valve installed on a connection path that connects an exit of the master cylinder to a supply path, and a relief valve installed to reduce a hydraulic brake pressure in the wheel cylinder to a predetermined pressure value in a closed state of a main orifice of the rolling-prevention solenoid valve.

Abstract: Disclosed herein is a solenoid valve having a valve seat assembly manufactured as a single body such that the valve seat assembly is simply fitted in a valve housing. The valve seat assembly comprises a valve seat, a filter, and a sealing plate. The valve seat assembly is disposed at one end of a housing. The valve seat comprises a first orifice formed such that the first orifice is opened and closed as a plunger is moved forward and backward, and a second orifice formed such that the second orifice is arranged in parallel with the first orifice. The sealing plate is provided at the center thereof with a through-hole, which communicates with the first orifice of the valve seat. The sealing plate is disposed in the valve seat such that the sealing plate is not separated from the valve seat by means of the filter. The sealing plate is moved toward the first orifice by the pressure of a fluid close the second orifice. In this way, the sealing plate serves as a check valve.

Abstract: A torque sensor including a first step formed on an inner peripheral surface of a sensor housing, a second step formed on an outer peripheral surface of a detection coil assembly, the first and second steps axially supporting each other, and a groove formed on the outer peripheral surface of the detection coil assembly at a position adjacent to the second step such that the groove faces an inner surface portion of the first step, so that the first step penetrates the groove while being plastically deformed when the detection coil assembly is pressed toward the first step, thereby causing the detection coil assembly to be fixed to the inner peripheral surface of the sensor housing.

Abstract: A brake traction control valve is disclosed. The brake traction control valve includes a valve core, a shell, an armature, an exciting coil, a plunger, and a return spring. The valve core has an inlet to allow inside and outside of the valve core to communicate with each other, and a valve seat provided with an orifice therein. The shell having a dome plus cylinder shape is coupled to the valve core to cover one end of the valve core. The armature is placed in the shell to move forward and backward. The exciting coil is placed around the shell to cause the armature to move forward and backward. The plunger is placed in the valve core to move forward and backward to selectively open and dose the orifice while moving forward and backward by the armature. The return spring returns the plunger and the armature to open the orifice.

Abstract: Disclosed herein is a solenoid valve having a valve seat assembly manufactured as a single body such that the valve seat assembly is simply fitted in a valve housing. The valve seat assembly comprises a valve seat, a filter, and a sealing plate. The valve seat assembly is disposed at one end of a housing. The valve seat comprises a first orifice formed such that the first orifice is opened and closed as a plunger is moved forward and backward, and a second orifice formed such that the second orifice is arranged in parallel with the first orifice. The sealing plate is provided at the center thereof with a through-hole, which communicates with the first orifice of the valve seat. The sealing plate is disposed in the valve seat such that the sealing plate is not separated from the valve seat by means of the filter. The sealing plate is moved toward the first orifice by the pressure of a fluid close the second orifice. In this way, the sealing plate serves as a check valve.

Abstract: A pump of an electronic brake system, in which an inlet valve has an improved structure so that the inlet valve is efficiently and stably opened. The inlet valve includes a valve sheet formed at the end of a piston, a switch member mounted on the valve sheet, an elastic member for applying elastic force for pushing the switch member toward the valve sheet, and a retainer for receiving the switch member and the elastic member, and a sheet contact portion of the switch member contacting the valve sheet has a planar surface. A protrusion extended toward the valve sheet is formed along the edge of the sheet contact portion so that the sheet contact portion linearly contacts the valve sheet. The switch member is made of plastic. The valve sheet having a disk shape, which the sheet contact portion contacts, is formed integrally with the piston.

Abstract: Disclosed herein is a mold for manufacturing a housing of a hydraulic unit of an anti-lock brake system for vehicles. The housing has a plurality of bores formed therein such that components, such as a plurality of valves, accumulators, hydraulic pumps, and a driving motor, and a plurality of connection pipes are mounted to the housing through the bores.

Abstract: The present invention discloses a hydraulic unit of an anti-lock brake system for vehicles having a housing that is easily manufactured, whereby production efficiency is improved, and thus the manufacturing costs of the housing are reduced. The present invention also discloses a method of manufacturing the same. The hydraulic unit comprises a housing having components that control braking oil pressure supplied to wheels of a vehicle, such as a plurality of valves, accumulators, and hydraulic pumps, mounted thereto, flow channels formed in the housing, the flow channels being connected between the components, and a plurality of pipes connected to each other in the housing. The housing is made of an injected resin material having a plurality of reinforcing members that reinforce the strength of the parts of the housing where the components are mounted to the housing and the pipes are connected to the housing inserted therein.