A brake driving apparatus includes a hydraulic valve block including a vent channel for discharging air to the outside, an electronic control device that includes an electrical component housing open in a direction of the vent channel of the hydraulic valve block and having a ventilation hole connected to an internal space and a filter attached to the electrical component housing to block the ventilation hole so that air can pass therethrough, and is supported by one side of the hydraulic valve block, and a vent sealing member that seals a space between the hydraulic valve block and the electronic control device and surrounds the vent channel, the ventilation hole, and the filter.

A brake system for motor vehicles may include an actuation device (e.g., brake pedal), a travel simulator to generate a feedback force on the actuation device, a first piston-cylinder unit having at least one piston that separates two working chambers that are connected via at least one hydraulic line to at least one wheel brake of a brake circuit, a control device and a pressure supply unit driven by an electric motor. At least one wheel brake may be assigned to each brake circuit, and each wheel brake may be connected to its associated hydraulic connecting line via a controllable switching valve. An outlet valve may be assigned to a single wheel brake or to a single wheel brake of each brake circuit in a hydraulic connection between the wheel brake and a pressure medium storage container, without any further valve disposed as such.

[Problem] The present invention relates to a hydraulic control unit that includes a pump for increasing a hydraulic pressure of a brake fluid.

[Means for Resolution] The hydraulic control unit according to the present invention includes: a discharge channel from which the brake fluid is discharged, the brake fluid being pressurized by the pump; 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 which is formed by the valve housing and one end surface of the movable core, into which the brake fluid from the discharge channel flows, and whose volume can vary.

The present disclosure relates to an electronic brake system and an operation method thereof. The electronic brake system includes a reservoir in which a pressurized medium is stored, an integrated master cylinder including a simulation piston, a master piston, and an elastic member provided between the simulation piston and the master piston, a reservoir flow path to connect the integrated master cylinder and the reservoir, a hydraulic pressure supply device configured to generate a hydraulic pressure by operating a hydraulic piston according to an electrical signal output in response to a displacement of a brake pedal, a hydraulic control unit including a first hydraulic circuit having two wheel cylinders and a second hydraulic circuit having the other two wheel cylinders and configured to control the hydraulic pressure transferred to the first hydraulic circuit and the second hydraulic circuit, and an electronic control unit configured to control valves based on hydraulic pressure information and displacement information of the brake pedal.

Provided is an electronic brake system including, a master cylinder including a first piston connected to a pedal and a second piston configured to partition a first master chamber and a second master chamber provided in front of the first piston, a reservoir in which a braking fluid is stored, the reservoir connected to the first master chamber by a first reservoir passage, and connected the second master chamber by a second reservoir passage, a hydraulic pressure supply device configured to generate a hydraulic pressure by an electrical signal output in response to a displacement of the pedal, a first connection line configured to connect the first master chamber to a first hydraulic circuit, a second connection line configured to connect the second master chamber to a second hydraulic circuit, and a third connection line configured to connect the hydraulic pressure supply device to the reservoir, wherein a mechanical part including the reservoir and the master cylinder is installed in a first block, and an electronic part including the hydraulic pressure supply device and the first hydraulic circuit, the second hydraulic circuit is installed in a second block, and each of the first connection line, the second connection line, and the third connection line is provided to connect the first block to the second block.

A coil assembly includes: a bobbin; a coil including a winding around the bobbin; a yoke attached to the bobbin; and a connection terminal electrically connected to the winding. The connection terminal is a press-fit terminal that includes a terminal portion projecting perpendicularly from the bobbin outward in an axial direction of the bobbin. The yoke is arranged on a side of the bobbin that is opposite to the terminal portion in an axial direction of the terminal portion, and supports the press-fit terminal.

According to an embodiment of the present invention, provided is an electro-hydraulic braking system including an auxiliary braking system capable of performing a 2-channel compression/decompression control and a 1-channel decompression control.

The present disclosure comprises a reservoir cutoff valve provided on a pipe and configured to be opened in a non-energization state; a simulator cutoff valve provided on a pipe and configured to be closed in a non-energization state; an operation determination circuit configured to determine whether the brake operation member is in an operation execution state in which the brake operation member is being operated is; and a current control circuit that, when the operation determination circuit determines that the brake operation member is not in an operation execution state, supplies a first current to the reservoir cutoff valve, and when the operation determination circuit determines that the brake operation member is in an operation execution state, supplies a second current greater than the first current to the reservoir cutoff valve.

A hydraulic block of an electronic braking device for a vehicle includes a first input port and a second input port configured to receive a brake fluid from a main braking system, at least one oil chamber connected to one input port of the first input port and the second input port, a first output port and a second output port configured to discharge the brake fluid to a plurality of wheel brake apparatuses, a first inlet line configured to connect the first input port and the first output port to each other, and a second inlet line configured to connect the second input port and the second output port to each other, a first outlet line bifurcated from the first inlet line, a second outlet line bifurcated from the second inlet line, and a valve mounting unit mounted with a plurality of valves.

A braking system for a vehicle including front and rear wheels having wheel brakes includes a fluid displacement mechanism for supplying brake fluid to at least one of the wheel brakes. The fluid displacement mechanism includes a piston having a first position prior to braking and a second position for applying braking. A fluid accumulator is in fluid communication with the fluid displacement mechanism and stores brake fluid. A valve is in fluid communication with the fluid displacement mechanism and the accumulator and is configured to be closed while the piston moves from the second position towards the first position to prevent depletion of the accumulator.