Disclosed is an electronic brake system that includes a master cylinder unit including a master cylinder to which a master cylinder reservoir coupled to generate a hydraulic pressure, a hydraulic block provided with a hydraulic pressure supply device to generate the hydraulic pressure by an electrical signal outputted in response to a displacement of a brake pedal and a hydraulic control unit to transmit the hydraulic pressure discharged from the hydraulic pressure supply device to wheel cylinders provided in each wheel, and disposed to be separated from the master cylinder unit, a hydraulic block reservoir coupled to the hydraulic block, and a connection hose to connect the master cylinder reservoir and the hydraulic block reservoir.

According to at least one embodiment, the present disclosure provides a method of controlling a brake of a vehicle, the method comprising: a process of determining a pressure difference between channel pressure, which is determined by hydraulic pressure of the wheel brake, and required braking pressure by means of the controller; a process of opening the control valve by means of the controller when the channel pressure is larger than the required braking pressure; and a process of controlling the control valve on the basis of the difference between the required braking pressure and the channel pressure.

The present disclosure in at least one embodiment provides a solenoid valve for a vehicle brake, including a sleeve internally formed with a hollow interior space and fixed to a pump housing, a coil surrounding the sleeve, a first magnetic body at least partially accommodated in the hollow interior space of the sleeve, a second magnetic body at least partially accommodated in the hollow interior space of the sleeve, an elastic member disposed between the first magnetic body and the second magnetic body, an orifice configured to open and close as the second magnetic body moves, and a damping member disposed between the first magnetic body and the second magnetic body to form a gap between the first magnetic body and the second magnetic body.

In order to detect air in a brake master cylinder within a hydraulic power brake system, a brake master cylinder pressure on actuation of the brake master cylinder is compared with a comparison pressure which prevails in the brake master cylinder when it is air-free. For bleeding, brake fluid is conveyed with a power brake pressure generator through the in this case non-actuated brake master cylinder into a pressureless brake fluid reservoir, where air escapes from the brake fluid.

A brake system for actuating at least one wheel brake includes a reservoir and a master cylinder operable to provide a brake signal responsive to actuation of a brake pedal connected thereto. The master cylinder is selectively operable during a manual push-through mode to generate brake actuating pressure to at least one output for hydraulically actuating at least one wheel brake. A power transmission unit is configured for actuating at least one of the wheel brakes in a non-failure normal braking mode. A secondary braking module is configured for selectively providing hydraulic fluid to each of the wheel brakes in an enhanced braking mode. The secondary braking module includes a pump motor driving at least one pump unit. Each pump unit is operatively connected to a fluid accumulator associated with the correlated wheel brake for selectively varying an amount of hydraulic fluid provided to the wheel brake.

A hydraulic block of an electronic braking device for a vehicle may include: a block body; an input port part disposed on the block body, and connected to an output line of a main braking device to brake a vehicle using hydraulic pressure; an output port part connected to a hydraulic brake line for individually adjusting one or more wheels; and a hydraulic circuit part formed in the block body so as to extend from the input port part to the output port part, and configured to control hydraulic pressure for redundancy of vehicle braking.

A valve assembly for a vehicle brake apparatus is disclosed, including a solenoid valve, a pump housing having a bore accommodating the solenoid valve at least partially, a coil for applying a magnetic force to the solenoid valve, a circuit board configured to generate a signal for controlling opening and closing of the solenoid valve, a circuit board housing for accommodating the circuit board, a bobbin at least partially disposed inside the coil, a pin coupled to the bobbin and configured to supply an electric current to the coil, and a coil case at least partially disposed radially outwardly of the coil. Here, the bobbin is coupled with a compression unit that is in external contact with one surface of the circuit board and configured to compress the bobbin and the coil case toward the pump housing.

To obtain a hydraulic pressure control unit and a straddle-type vehicle brake system, each of which can answer a request for downsizing. The straddle-type vehicle brake system has a hydraulic circuit that includes: a primary channel through which brake fluid in a master cylinder is delivered to a wheel cylinder; a secondary channel through which the brake fluid in the wheel cylinder is released to a primary channel intermediate portion; and a supply channel that supplies the brake fluid to a secondary channel intermediate portion. In a state where a surface on which a motor 28 of a base body 51 in the hydraulic pressure control unit is vertically provided is seen from the front, an opening for a first valve 31 that controls a flow rate on the wheel cylinder side of the primary channel intermediate portion and an opening for a second valve 32 that controls a flow rate on an upstream side of the secondary channel intermediate portion overlap a first straight line L1, and an opening for a third valve 35 that controls a flow rate on the master cylinder side of the primary channel intermediate portion and an opening for a fourth valve 36 that controls a flow rate of the supply channel overlap a second straight line L2 that crosses the first straight line L1 at a right angle.

A vehicle braking device includes: an electric cylinder in which a piston driven by an electric motor slides in a cylinder to supply fluid; a hydraulic pressure output unit connected to the electric cylinder by way of a first liquid passage, the hydraulic pressure output unit pressurizing or depressurizing a hydraulic pressure in the first liquid passage and outputting the hydraulic pressure to a supply liquid passage connected to a first wheel cylinder; and a control unit that causes at least one of the electric cylinder and the hydraulic pressure output unit to generate the hydraulic pressure in the first wheel cylinder according to a relative position between the piston and the cylinder.

The present disclosure provides an electronic hydraulic brake system that can appropriately provide redundancy braking force, that is, an electronic hydraulic brake system that provides a so-called redundancy function, in the situation in which a driver does not drive or gives less attention to driving such as autonomous driving or smart cruise control and a main braking device malfunctions.