An externally adjustable pressure modulating valve is disclosed. In one example, the valve has a valve body extending along a valve axis and defining a plunger cavity extending axially into a first end of the valve body. A valve spool is retained in the valve body and is movable along the valve axis. An input plunger is slidable axially in the plunger cavity between a resting position and an actuated position. An external adjustment mechanism is configured to adjust the modulation spring force when the input plunger is fully actuated. In one example, the adjustment mechanism includes a threaded sleeve in the plunger cavity, where rotating the threaded sleeve changes the mechanical stop of the input plunger.

An externally adjustable pressure modulating valve is disclosed. In one example, the valve has a valve body extending along a valve axis and defining a plunger cavity extending axially into a first end of the valve body. A valve spool is retained in the valve body and is movable along the valve axis. An input plunger is slidable axially in the plunger cavity between a resting position and an actuated position. An external adjustment mechanism is configured to adjust the modulation spring force when the input plunger is fully actuated. In one example, the adjustment mechanism includes a threaded sleeve in the plunger cavity, where rotating the threaded sleeve changes the mechanical stop of the input plunger.

A brake valve has a main body, a shaft movable within the main body, a spool plate, a first spring and a second spring arranged within the main body. The spool plate is movable between a release configuration and a brake configuration where the shaft is adapted to be linked with a first actuator configured to slide the shaft. The brake valve has a command fluid port connected to a brake chamber. A valve ring defines the brake chamber with the main body and the shaft. The valve ring is configured to, when a pilot pressure is applied in the brake chamber, move the shaft towards the actuated position or push the second spring so as to move the spool plate towards the brake configuration.

A brake valve has a main body, a shaft movable within the main body, a spool plate, a first spring and a second spring arranged within the main body. The spool plate is movable between a release configuration and a brake configuration where the shaft is adapted to be linked with a first actuator configured to slide the shaft. The brake valve has a command fluid port connected to a brake chamber. A valve ring defines the brake chamber with the main body and the shaft. The valve ring is configured to, when a pilot pressure is applied in the brake chamber, move the shaft towards the actuated position or push the second spring so as to move the spool plate towards the brake configuration.

A pulsation damper for damping pressure medium vibrations in a hydraulic system, has a membrane within a bore of a housing, which membrane is exposed to the pressure medium on its one side and faces a gas-filled cavity inside the housing on its other side, the bore of which is closed by means of a plug. The membrane, in conjunction with the plug and a hollow-cylindrical support body, forms an independently handleable, functionally pre-testable assembly, for which purpose the membrane is substantially cup-shaped, and the support body extends into it.

A pulsation damper for damping pressure medium vibrations in a hydraulic system, has a membrane within a bore of a housing, which membrane is exposed to the pressure medium on its one side and faces a gas-filled cavity inside the housing on its other side, the bore of which is closed by means of a plug. The membrane, in conjunction with the plug and a hollow-cylindrical support body, forms an independently handleable, functionally pre-testable assembly, for which purpose the membrane is substantially cup-shaped, and the support body extends into it.

An electromagnetic-actuator (EA) assembly includes a first EA having a first coil-arrangement (CA) with a first coil-core (CC) and a first coil and having a first movable-magnetic-armature-body (MMAB) which is movable by a magnetic-field generated by the first CA from a first into a second position in which the first AB is attracted towards a first-surface, which is different from the first CC and arranged opposite the first AB, and contacts the first CC, and a second EA having a second CA with a second CC and a second coil and having a MMAB having a damping-device mounted on the second AB and which is movable by a magnetic-field generated by the second CA from a first into a second position in which the second AB is attracted towards a second-surface and abuts against the second-surface by the damping-device. The first and second surfaces are identical in construction.

Disclosed herein is a hydraulic unit of a brake system. According to one embodiment of the present invention, the hydraulic unit of a brake system includes a master cylinder configured to generate a hydraulic pressure to supply a braking hydraulic pressure to a wheel cylinder of a vehicle, a valve block coupled with the master cylinder to transmit the braking hydraulic pressure to the wheel cylinder and having a plurality of valves and borers, and an electronic control unit (ECU) installed at the valve block to control the plurality of valves, wherein a plurality of oil passages configured to connect the bores with hydraulic ports formed at the master cylinder are formed on a surface of the valve block to have straight lines and curved lines, and the plurality of oil passages are engraved on the surface of the valve block.

Disclosed herein is a hydraulic unit of a brake system. According to one embodiment of the present invention, the hydraulic unit of a brake system includes a master cylinder configured to generate a hydraulic pressure to supply a braking hydraulic pressure to a wheel cylinder of a vehicle, a valve block coupled with the master cylinder to transmit the braking hydraulic pressure to the wheel cylinder and having a plurality of valves and borers, and an electronic control unit (ECU) installed at the valve block to control the plurality of valves, wherein a plurality of oil passages configured to connect the bores with hydraulic ports formed at the master cylinder are formed on a surface of the valve block to have straight lines and curved lines, and the plurality of oil passages are engraved on the surface of the valve block.

A brake control system is provided for a vehicle having steerable front wheels, left and right brake units for braking left and right rear wheels, and a single manually operated brake input device. A main brake valve has a supply port, a return port, an outlet and a valve spool for controlling communication therebetween. The valve spool is coupled to a brake input device. A normally open left turn valve controls communication between the outlet and the left brake unit. A normally open right turn valve controls communication between the outlet and the right brake unit. A normally open balance valve controls communication between the left and right brake units. The system includes a brake input device sensor, a turn angle sensor and a vehicle speed sensor. A control unit controls the left and right turn valves and the balance valve as a function of signals from the sensors.