Abstract: Disclosed are a rack-driven steering apparatus and a rack-driven auxiliary power steering apparatus including the same. The present invention can protect peripheral parts such as a motor for driving a nut pulley and an electronic control unit to improve durability when an excessive load reversely input from the outside is transmitted during an operation of a belt by the motor, and prevent a steering disabling state during a high speed travel of the vehicle, thereby providing a driver with a stable steering condition.

Abstract: Disclosed is a solenoid valve for a brake system which improves an assembly structure of components configuring the valve to enhance durability and control performance of the valve. The solenoid valve for a brake system includes a seat housing installed at a bore of a modulator block and provided with a through hole formed therethrough, a valve seat installed at the through hole of the seat housing and provided with an orifice, a sleeve provided with a hollow and connected to the seat housing, a magnetic core, an armature installed at the sleeve, and a return spring installed in the sleeve, wherein the armature includes an upper armature formed of a magnetic material, and a lower armature formed of a non-magnetic material, wherein the through hole of the seat housing is provided with a guide region having a diameter corresponding to an outer diameter of the lower armature.

Abstract: A booster assembly for a vehicle capable of reducing the noise and manufacturing cost thereof, the booster assembly including an input rod configured to reciprocate in linkage with a brake pedal, a control plunger configured to reciprocate in linkage with the input rod, and a boosting piston configured to reciprocate in linkage with the control plunger or reciprocate in linkage with a valve body, wherein the boosting piston directly transmits an output, which is generated at the booster, to the master cylinder without being separated.

Abstract: Disclosed is an electric parking brake (EPB) including a housing, a parking cable connected to brakes, a motor to generate driving force to drive the parking cable, a reduction gear unit connected to a rotating shaft of the motor, a screw-nut unit including a screw member, a nut member screw-coupled to the screw member and a gear member mounted on an outer surface of the nut member, and a displacement sensor connected to an end of the nut member to detect a magnitude of force applied to the parking cable. The parking cable includes a first parking cable connected to an end of the screw member, and a second parking cable connected to an end of the displacement sensor when a dual puller type is applied. The end of the displacement sensor is connected to a fixing cable fastened to the housing when a single puller type is applied.

Abstract: Disclosed are a decelerator configured so that a planet gear type first deceleration unit is provided inside a cycloid type second deceleration unit to provide eccentric rotational force to the second deceleration unit and a motor brake with the same. In the decelerator, the increase in axial thickness of a motor is restrained, and a deceleration ratio is effectively increased. In the motor brake with the decelerator, the deceleration ratio of the motor is increased, and the increase in total length of the motor brake is restrained by the decelerator, thereby improving space utilization.

Abstract: A hydraulic brake device and a method for controlling the same are disclosed. The disclosed hydraulic brake device determines failure of a booster pressure sensor provided at a hydraulic power unit, using pressure correlation among a master cylinder pressure sensor, a pressure sensor provided at the hydraulic power unit to detect a pressure transferred to a hydraulic pressure controller, and a high pressure accumulator pressure sensor. When there is failure of the booster pressure sensor, the driver is informed of the failure, and a braking operation is carried out, taking into consideration the failure. Accordingly, it may be possible to avoid excessive braking, sudden braking, insufficient braking, etc., and to achieve enhancement in braking sensation and braking force.

Abstract: The present invention relates to a steering shaft, and more particularly, to a steering shaft which is provided with a misassembly prevention structure for preventing misassembly when a shaft is inserted into and assembled with a yoke.

Abstract: An in-wheel motor system capable of maximizing the efficiency in using a wheel space by improving a mounting structure thereof, the in-wheel motor system installed at a wheel of a vehicle to transmit a rotational force including an axle installed at the wheel of the wheel and rotating together with the wheel, an in-wheel motor mounted inside the wheel and provided with a rotor and a stator that are used to generate a rotational force to drive the wheel, the rotor, and the stator disposed to face each other while having an accommodation space thereinbetween, a cycloid decelerator installed at a center of the in-wheel motor, and provided with an output shaft to transmit a rotational force at a reduced speed from the in-wheel motor to the axle and an input shaft that passes through the in-wheel motor and rotates together with the rotor, a disc installed at one end portion of the input shaft that protrudes by passing through the in-wheel motor, and a disc brake configured to provide a braking force by pressing th

Abstract: Disclosed herein is an electronically controlled brake booster. The electronically controlled brake booster includes a brake pedal sensor to detect a stroke of a brake pedal, a motor to transmit power required to generate a braking pressure, a cylinder pressure sensor to detect an internal pressure of a cylinder generated via the motor, and an electronic control unit to control driving of the motor. The electronic control unit includes a target pressure setting element to set a target pressure using the detected brake pedal stroke information and a proportional-integral controller to perform proportional-integral compensation of an error between the target pressure and the pressure of the cylinder. The electronic control unit further includes a proportional-integral gain adjustor to adjust at least one of a proportional gain and an integral gain of the proportional-integral controller using the cylinder pressure information detected via the cylinder pressure sensor.

Abstract: Disclosed are an electronic parking brake system and a control method thereof. An aspect is to protect an electronic parking brake system by judging whether it enters a control mode based on results of monitoring a peripheral temperature of the electronic parking brake system and a motor temperature after operation. The electronic parking brake system includes a locking/unlocking switch to lock or unlock an electronic parking brake, a motor to drive the electronic parking brake, a temperature sensor to measure a peripheral temperature around the motor, and a controller that limits a locking function of the electronic parking brake when the repetition number of locking/unlocking operations of the electronic parking brake is zero for a predetermined short time under assumption that the temperature sensor breaks down, so as to prevent occurrence of breakdown due to overload and overheating of the motor.

Abstract: Disclosed herein is an electronic parking brake which is installed in a vehicle and is operated by a motor. The electronic parking brake having a drum rotating together with a wheel and first and second brake shoes includes a motor rotated in normal and reverse directions and generating driving force for braking, a cycloid reducer connected to a rotary shaft of the motor and amplifying the driving force generated from the motor, a spindle member connected to the cycloid reducer and rotated, a spur gear assembly rotated by rotary force transmitted from the spindle member, a piston rotated and provided with the outer circumferential surface on which one gear of the spur gear assembly is integrally formed, and a push rod unit installed at both ends of the piston in the longitudinal direction, rectilinearly moved according to rotation of the piston and supported by the first and second brake shoes.

Abstract: Disclosed herein is a brake device of an electro-hydraulic brake system for vehicles which provides hydraulic braking force to transmit stable pedal feel and provides regenerative braking for fuel efficiency improvement. The brake device includes an actuator unit including a master cylinder, a housing including a boosting chamber and a simulation chamber, an input rod, a reservoir connected to the upper portion of the master cylinder and storing oil, a simulator connected to the simulation chamber and a pedal displacement sensor sensing displacement of the pedal, and a hydraulic control unit. The hydraulic control unit includes an accumulator, a pump sucking oil from the reservoir and discharging the oil to the accumulator, a motor, a first control valve, a second control valve, a third control valve, pressure sensors sensing the pressures of the accumulator, the boosting chamber and the simulation chamber, and an electronic control unit (ECU).

Abstract: The present invention relates to a technology of mitigating shaking of a steering wheel, and more particularly to a steering wheel shake mitigating method and a steering wheel shake mitigating apparatus by which shaking of the steering wheel is mitigated by generating a steering wheel shake mitigating signal using a torque signal.

Abstract: Disclosed herein is an electronic disc brake in which driving force of a motor may be transmitted to a gear unit in a serial manner. The electronic disc brake which has a carrier, a caliper housing, a pair of pad plates disposed at both sides of a disc, and a piston installed within a cylinder part and pressing one of the pair of pad plates toward the disc, includes a spindle member passing through the rear wall of the caliper housing and rotated within the cylinder part, a nut member screw-connected to the spindle member and pressing the piston or releasing pressing of the piston, a motor generating driving force, and a cycloid reducer amplifying the driving force generated from the motor and transmitting the amplified driving force to the spindle member, and the motor, the cycloid reducer and the spindle member are coaxially connected in series.

Abstract: An apparatus for opening/closing a reservoir, capable of communicating the inside the reservoir with outside air and preventing oil stored in the reservoir from leaking to the outside, the apparatus including a cap coupled to an oil injection port of the reservoir storing oil and provided with an air passage connecting an entry positioned in a center of an inner surface of the cap to an exit positioned at an inner surface of an outer side in a radial direction of the cap to communicate with outside air, and a gasket provided between the inner surface of the cap and the oil injection port and provided in a center thereof with an air-passing hole to communicate the air passage with an inside the reservoir, wherein the air passage is connected in a way to pass through a position, which is spaced apart from the entry to the exit in a coaxial manner with respect to the entry, at least one time.

Abstract: Disclosed herein are a lane-change assistance system of a vehicle and a lane-change assistance method thereof. The lane change assistance system includes a wheel speed sensor to detect a wheel speed of the vehicle, a steering angle sensor to detect a steering angle of the vehicle, and a micro controller unit to calculate, using the wheel speed and the steering angle, a desired yaw rate value required to allow the vehicle to return to an original lane when attempting to move the vehicle to an adjacent lane, but another vehicle in the adjacent lane threatens the corresponding vehicle, to compare the desired yaw rate value with a preset threshold value, and to assist a lane change manoeuvre of the vehicle based on the comparison result.

Abstract: A disc brake provided with a guide spring capable of preventing a vibration of a pad plate having a friction pad mounted thereon, and capable of separating the friction pad from a disc in a rapid manner after a braking operation is finished, the disc brake including a disc rotating together with a wheel of a vehicle, two pad plates disposed at both lateral sides of the disc, respectively, to perform a braking by pressing both lateral side surfaces of the disc and each having a friction pad, a caliper housing and a piston that are configured to press the pad plate, and a guide spring enabling the pad plates to operate as an integral body and absorb shock.

Abstract: Disclosed is an a method, an apparatus, and a system for getting a peripheral situation to automatically determine a parking mode, and helping recognize an obstacle more accurately by using a camera in addition to an ultrasonic sensor, thereby allowing a safe and accurate parking control.