The hydraulic pressure control device has an idle region, and is provided with a control portion, and a correcting portion which, in cases when the reaction time of the actual pressure to pressure increasing control or pressure decreasing control exceeds a predetermined threshold time, corrects a control current towards the side in which the flow-rate is increased. In cases when a judging portion has judged that the pressure increasing control is in the idle area, the correcting portion applies, as the threshold time, an idle threshold time set to a value different from the threshold time that in cases when the judging portion has not judged that the pressure increasing control is in the idle area. Furthermore, in cases when the reaction time of the actual pressure to the pressure increasing control exceeds the idle threshold time, the correcting portion corrects the control current.

A brake control device includes: a liquid pressure line provided for each vehicle wheel and supplied with a brake liquid pressure; a pressurization unit configured to supply a pressurization brake liquid pressure to the liquid pressure line; an abnormality detection unit configured to detect an abnormality of the liquid pressure line at a time the brake liquid pressure of the liquid pressure line is not greater than a threshold value; and a pressurization adjustment unit configured to continuously supply the pressurization brake liquid pressure to the liquid pressure line of the normal vehicle wheel having a low abnormality occurrence risk and suppress the supply pressure of the pressurization brake liquid pressure to the liquid pressure line of the vehicle wheel having a high abnormality occurrence risk until the abnormality of the liquid pressure line is detected by the abnormality detection unit.

Provided is a braking device capable of improving ease of layout inside a housing. The braking device includes: a housing, a pump provided in the housing, a suction oil passage provided inside the housing, and connected to a suction part of the pump, and a reservoir provided inside the housing, having an opening for connection to an oil passage outside the housing on an outer surface of the housing. The suction oil passage open in the reservoir. Brake fluid is reserved in the reservoir.

Provided is a vehicular brake apparatus capable of suppressing the occurrence of pedal shock. In this vehicular brake apparatus, a master cylinder forms a second hydraulic chamber neighboring to a first hydraulic chamber through a seal member. The seal member is arranged at a position facing the first hydraulic chamber and the second hydraulic chamber to be movable in the axial direction relative to the master cylinder. A first hydraulic pressure generating portion executes a movement restriction hydraulic pressure control such that when the operation information obtained by the operation information obtaining portion indicates that the brake operating member is not operated, the first hydraulic pressure which is higher than the second hydraulic pressure is generated in advance and consecutively, the larger a value relating to an operating amount in the operation information obtained by the operation information obtaining portion, the higher the first hydraulic pressure is generated.

The hydraulic pressure generating device includes a regulator (spool valve) formed by a cylinder body, a spool which slidably moves within the cylinder body, a pilot chamber in which a pilot pressure which is a hydraulic pressure moving the spool along in an axial direction is inputted and an output chamber out of which an output pressure which is a hydraulic pressure corresponding to the pilot pressure is outputted, wherein the hydraulic pressure generating device further includes a spool position obtaining portion which obtains a relative position of the spool relative to the cylinder body and a pilot pressure controlling portion which controls the pilot pressure based on the relative position obtained by the spool position obtaining portion.

Examples relate to a hydraulic control unit that includes a pump for increasing a hydraulic pressure of a brake fluid. The hydraulic control unit includes a discharge channel from which the brake fluid pressurized by a pump is discharged, a pulsation reducing unit disposed in the middle of the discharge channel, and a controller controlling the pump and the pulsation reducing unit. The pulsation reducing unit includes a valve housing, a fixed core fixed to the valve housing, a movable core received in the valve housing in an axially movable manner, a closing member interlocking with the movable core and closing the discharge channel, a coil disposed in a manner to surround the valve housing and the fixed core, and an inflow chamber formed by the valve housing and one end surface of the movable core, into which the brake fluid flows, and whose volume can vary.

A master cylinder apparatus includes: an input piston that can be moved forward by operating a brake operating member; a pressure piston that is provided in front of the input piston to be capable of moving relative to the input piston; and a stroke velocity ratio modification device that is capable of modifying a stroke velocity ratio, which is a ratio between a stroke velocity of the pressure piston and a stroke velocity of the input piston, in at least two stages while the input piston moves from a rear end portion position to a front end portion position, and that sets the stroke velocity ratio at 1 when an abnormality occursin the master cylinder apparatus.

A brake system for a vehicle having a master brake cylinder, which provides a pressure signal, having a brake-medium reservoir connected to the master brake cylinder, and a first brake circuit, which is coupled by a first input to the master brake cylinder and by a second input to the brake-medium reservoir, and having at least one first wheel-brake cylinder, which is mounted at a first wheel, in order to exert a force corresponding to the pressure signal onto the first wheel, and having a separator valve, which is configured between the first input and the first wheel-brake cylinder, to prevent further transmission of the pressure signal upon receipt of a supplied closing signal; and having a control valve, which is configured between the first input and the first wheel-brake cylinder; in order to control an inflow of a brake medium from brake-medium reservoir to the first wheel-brake cylinder. In addition, a method for controlling a corresponding brake system is also described.

Provided is an electric booster capable of detecting a movement position of an input member in a wide range along an axial direction. The electric booster includes an input rod formed of a magnetic material, an input plunger formed of a non-magnetic material, and an input piston formed of a magnetic material. A stroke detector includes respective magnet members arranged so that magnetic poles are aligned along a movement direction of the input plunger, and a Hall sensor unit that is fixed to a housing, and detects a movement position of the input plunger in accordance with a magnetic flux density from the respective magnet members. As a result, a flat magnetic flux distribution having a wide region along the axial direction is provided, and the movement position of the input plunger can be detected relatively precisely in a wide range along the axial direction.

An automated parking brake for a motor vehicle having at least one brake device is configured to adopt at least two states. In a first state, no clamping force is established by the parking brake, and in a second state, a clamping force is established by the parking brake. A transition point defines a transition between the two states. An identification of the transition point is carried out during a releasing process of the parking brake.