An ABS modulator support structure of a saddle type vehicle includes a main frame, a down frame, a pair of shroud which cover the right and left side of the frames, a radiator, a reserve tank which stores a coolant for the radiator, and an ABS module. The radiator is arranged on one (left side) side of the down frame 18 in a width direction of the vehicle. The ABS module is arranged on the other (right side) of the sides of the down frame in the width direction of the vehicle. The reserve tank and the shrouds are arranged outside the ABS module.

A piston pump for a vehicle brake system includes a piston which is mounted in a cylinder so as to be movable along an axis. An inlet valve for introduction of fluid into the cylinder, and a sealing element configured to seal off the piston with respect to the cylinder are located on the piston. A first portion of the piston includes a valve seat of the inlet valve, and a second portion of the piston includes a piston rod. The sealing element includes a projection which engages axially over the first piston portion and extends to the second piston portion.

A vehicle braking system includes a master cylinder, and a wheel cylinder. A primary braking unit includes a first pressure generating unit distinct from the master cylinder and is operable to actuate a braking action at the wheel cylinder in a primary mode of operation. The primary braking unit further includes an outlet port connecting the primary braking unit to the wheel cylinder. A secondary braking unit includes a second pressure generating unit distinct from the master cylinder and operable to actuate a braking action at the wheel cylinder in a secondary mode of operation. The secondary braking unit an inlet port connected to the outlet port of the primary braking unit. The primary braking unit includes one or more ABS valves operable to control traction control and anti-lock braking in the primary mode of operation and located between the first pressure generating unit and the outlet port of the primary braking unit. The secondary braking unit is located between the one or more ABS valves and the wheel cylinder.

A hydraulic unit, in particular a hydraulic unit for a slip-controllable vehicle brake system, includes a housing block, a pump, and a damping device. The pump has an intake side and a delivery side. The housing block has a pump receptacle that holds the pump, a first fluid duct that intersects the pump receptacle in a region of the delivery side of the pump, and a second fluid duct opening into the pump receptacle in the region of the delivery side of the pump, and a first separation point that seals off the first fluid duct from the second fluid duct. The damping device damps pulsations and reduces operating noise of the hydraulic unit without (i) having a detrimental effect on functional characteristics of the unit, in particular on pressure build-up dynamics of the vehicle brake system, or without (ii) jeopardizing a compact construction of the hydraulic unit.

A device including a valve array which is adapted to allow and block a fluid flow, wherein the valve array includes: a fluid channel; a valve seating; and a closing body, for example a rotationally symmetrical or spherical closing body, which is arranged in the fluid channel. The valve array is configured to allow a fluid flow when the closing body is lifted off the valve seating, and to prevent a fluid flow when the closing body rests against the valve seating. The valve seating is formed by a valve seating body, for example an annular valve seating body, which is arranged in or on the fluid channel.

According to at least one aspect, the present disclosure provides a piston pump comprising: a piston unit configured to reciprocate by driving of a motor cam; a sleeve unit disposed to surround at least a part of the piston unit and having a space in which brake oil is stored; and a check valve unit facing the sleeve unit and discharging the brake oil to an outside of the sleeve unit when a pressure of the brake oil increases, wherein the piston unit includes a first piston having a first end in contact with the motor cam and reciprocating, a second piston having a first end coupled to a second end of the first piston and configured to press the brake oil, and a spring cap coupled to a second end of the second piston and disposed to accommodate an inlet spring therein.

To provide a brake hydraulic pressure control apparatus capable of simplifying a measure against NVH and downsizing an outer shape of the apparatus.

The brake hydraulic pressure control apparatus that controls a hydraulic pressure in each of plural systems of hydraulic circuits includes: a pressure supply unit that includes a motor and a pump element; and a hydraulic block that includes an oil channel connected to the pressure supply unit and control valves regulating the hydraulic pressure of each of the plural systems of the hydraulic circuits. The pressure supply unit includes: the motor including a stator and a rotor; a swash plate arranged to be tilted with respect to an axial direction of a rotation axis of the rotor; and the pump element having plural pump sections driven by rotation of the motor. At least a part of the pump element is arranged in the rotor.

Disclosed is a hydraulic control apparatus of a brake system including a modulator block having a motor bore, and a motor including a cover that covers an opening of a case accommodating a stator and a rotor and is supported on one side of the modulator block, wherein a vent hole for air flow between the inside and the outside of the motor is formed on the cover and a communication passage for communicating the motor bore and the vent hole is formed in the modulator block.

A device including a valve array which is adapted to allow and block a fluid flow, wherein the valve array includes: a fluid channel; a valve seating; and a closing body, for example a rotationally symmetrical or spherical closing body, which is arranged in the fluid channel. The valve array is configured to allow a fluid flow when the closing body is lifted off the valve seating, and to prevent a fluid flow when the closing body rests against the valve seating. The valve seating is formed by a valve seating body, for example an annular valve seating body, which is arranged in or on the fluid channel.

[Problem] A brake hydraulic pressure controller capable of being formed with a relatively large damper chamber while suppressing enlargement of a housing is provided. [Means for Resolution] The brake hydraulic pressure controller includes: a motor having a motor shaft; a skew plate fixed to a tip of the motor shaft and arranged to be inclined with respect to an axial direction of the motor shaft; and a pump element driven by rotation of the motor shaft and the skew plate. The pump element has: a piston that reciprocates in parallel with the axial direction of the motor shaft in conjunction with the rotation of the skew plate; an accommodation chamber that accommodates a part of the piston and to which a brake fluid is introduced; a release valve that releases the brake fluid from the accommodation chamber; and a pressure damper chamber that is provided in a reciprocal direction of the piston and into which the brake fluid released from the release valve flows.