The present disclosure relates to an apparatus and a method for controlling a braking pressure of a powered booster brake system, the apparatus including a pedal stroke sensor configured to detect a manipulation degree of a brake pedal; an electronic control unit (ECU) configured to calculate a braking pressure using the detection result of the pedal stroke sensor; and a motor configured to move a piston inside a pump to perform a braking operation under control of the ECU, wherein the ECU determines a first position of the piston, which corresponds to the braking pressure, and controls the motor on the basis of a position of the piston.

The present disclosure relates to an apparatus and a method for controlling a braking pressure of a powered booster brake system, the apparatus including a pedal stroke sensor configured to detect a manipulation degree of a brake pedal; an electronic control unit (ECU) configured to calculate a braking pressure using the detection result of the pedal stroke sensor; and a motor configured to move a piston inside a pump to perform a braking operation under control of the ECU, wherein the ECU determines a first position of the piston, which corresponds to the braking pressure, and controls the motor on the basis of a position of the piston.

An electromagnetic valve including a solenoid to generate an electromagnetic force; a cylindrical member at least partially disposed in the solenoid and made from a non-magnetic material; a movable member configured to be moved in the cylindrical member in an axial direction of the valve based on the solenoid, the movable member including a restriction portion on one end side of the movable member; a plunger including one end portion located on the one end side and an opposite end portion located on an opposite end side of the movable member, the plunger being restricted in a movement thereof in a radial direction due to the opposite end portion disposed at the restriction portion. A movable amount of the movable member in the radial direction in the cylindrical member is less than a movable amount of the plunger in the radial direction relative to the restriction portion.

An electromagnetic valve including a solenoid to generate an electromagnetic force; a cylindrical member at least partially disposed in the solenoid and made from a non-magnetic material; a movable member configured to be moved in the cylindrical member in an axial direction of the valve based on the solenoid, the movable member including a restriction portion on one end side of the movable member; a plunger including one end portion located on the one end side and an opposite end portion located on an opposite end side of the movable member, the plunger being restricted in a movement thereof in a radial direction due to the opposite end portion disposed at the restriction portion. A movable amount of the movable member in the radial direction in the cylindrical member is less than a movable amount of the plunger in the radial direction relative to the restriction portion.

A control device including a fluid pressure control unit for controlling a pressure in a wheel cylinder by driving an electric motor of a pump on the basis of a command value; a motor target calculation unit for calculating a motor speed target value in accordance with an amount of increase in a fluid pressure target value; and a difference calculation unit for deriving a calculated value representing a difference obtained by subtracting the actual value from the target value for either the electric motor rotation speed or the pressure. The fluid pressure control unit derives the command value such that when the motor speed target value is less than the previous actual value for the electric motor rotation speed, the previous actual value is made the upper-limit of the command value, and the command value increases in proportion to the motor speed target value and to the calculated value.

A compressor arrangement for operating a compressed air supply installation includes a pneumatic compressor and an electric motor arranged inside a drive housing, the electric motor having an internal stator and an external outer rotor. The external outer rotor is arranged in a rotatable manner about the internal stator. The external outer rotor is supported in a rotatable manner about a center axis with respect to the drive housing via a bearing arrangement. The bearing arrangement has at least one bearing. The external outer rotor is supported by the bearing arrangement on an outer circumference of the outer rotor.

The present invention is related to a cooling device for a forklift brake system, which is capable of maintaining a predetermined level of heat-radiation performance by reducing heat when heat is generated in a service brake that is provided at a forklift driving shaft. A cooling device for a forklift brake system according to an exemplary embodiment of the present invention allows cooling oil to bypass a cooler when a pressure of the cooling oil is abnormally increased or there is a concern that a pressure of the cooling oil is increased, thereby preventing the cooler from being damaged.

A hydraulic assembly, particularly for supplying a brake circuit of a vehicle brake system with fluid at brake pressure, includes a throttle element, which in the unpressurized state rests with an upper side on a first support and with an underside on a second support, the supports being formed on opposite sides of the gap. The throttle device advantageously dispenses with a spring element for axial pre-tensioning, is accordingly of compact and cost-effective construction and is moreover easy to assemble.

A piston pump unit for a hydraulic vehicle power braking system including an electric motor, a planetary gear set, a worm gear, and a piston displaceable in a cylinder. As ventilation of an annular gap between the cylinder and the piston and a back side of the piston, the invention provides a radial hole and grooves in the cylinder.

A towable crash-attenuating vehicle is shown having a frame; at least two axles coupled to the frame, each of the axles having wheels attached thereto; a T-shaped ballast coupled to the frame, and oriented such that the weight of the ballast is biased toward the front end of the frame; deflection shields coupled to the right and left sides of the frame, wherein the deflection shields cover the frame and a majority of the wheels on each side of the vehicle; a tow connection coupled to the front of the frame, pivotable from a deployed state to an undeployed state; an impact attenuator coupled to the rear of the frame; wherein the vehicle is provided with a brake system, and wherein said brake system may be locked and unlocked and wherein the vehicle is provided with an on-board mechanism for locking and unlocking the brake system.