A hydraulic brake wear detection apparatus and a method for detecting a degree of pad wear of a brake pad of a hydraulic brake includes a caliper piston located at least partially within a caliper cavity and attached to the brake pad. The caliper piston includes a piston cavity extending from a caliper piston rim into a caliper piston body at a location longitudinally opposite, and spaced from, the brake pad. An internal piston is located at least partially within the piston cavity and is entirely enclosed in an internal space defined cooperatively by the piston cavity and the caliper cavity for reciprocal longitudinal motion with respect to the internal space. The internal piston is reciprocated by a predetermined volume of pressurized hydraulic fluid responsive to wear of the brake pad.

An adjustable pressure simulator device for vehicle braking systems of the brake-by-wire type may have an absorber body enclosing a first cylinder and a second cylinder fluidically communicating with each other and at least partially filled with a fluid. The first cylinder houses a first piston subject to the thrust action of the fluid and biased by a first elastic device which opposes the thrust action applied by the fluid. The second cylinder houses a second piston subject to the thrust action of the fluid and biased by a second elastic device which opposes the thrust action applied by the fluid. The first and the second elastic devices have different rigidities so as to induce the displacement of the second piston only after having reached a predetermined stroke of the first piston, under the thrust action of said fluid.

A pneumatic brake pedal module for a “brake-by-wire” brake system of a vehicle is disclosed. The brake pedal module has a pivotably mounted brake pedal and having a damping unit, which is mechanically coupled to the brake pedal to generate a resistance when the brake pedal is actuated, such that the damping unit is subjected to tension when the brake pedal is actuated.

A brake pedal module for a brake-by-wire brake system of a vehicle is disclosed, having a carrier component for securing the brake pedal module on the vehicle, a brake pedal pivotably mounted on the carrier component, and a damping unit for producing a resistance during actuation of the brake pedal. The damping unit has an insert, which comprises at least one elastic element. A receptacle for the insert is formed on the carrier component, which receptacle forms a housing of the damping unit and into which the insert is inserted.

A brake pedal module for a “brake-by-wire” brake system of a vehicle is disclosed. The brake pedal module has a pivotably mounted brake pedal and a damping unit. The damping unit is mechanically coupled to the brake pedal in order to generate a resistance when the brake pedal is actuated. The damping unit comprises a housing and a piston mounted in the housing in such a way that it can be moved from an initial position into an end position. In its initial position, the piston is supported on a base of the housing via at least two elastic elements arranged in series. A further elastic element is arranged parallel to the at least two elastic elements on the base of the housing. The further elastic element is not subject to any load in an initial position of the piston.

A method for operating a brake system. A brake request signal characterizing a brake request is generated by actuating a positioner system of an actuating circuit, and a setpoint brake pressure required in an active circuit is ascertained based on the brake request signal. An actual brake pressure is set in the active circuit according to the setpoint brake pressure using a pressure generation device by moving a displacement piston using an electric motor to actuate a wheel brake coupled with the active circuit. Under the condition that the brake request signal is constant over a predefined period of time, a pressure modulation is carried out, which includes setting the actual brake pressure in the active circuit to a value that is greater than the setpoint brake pressure, and lowering the actual brake pressure by moving the displacement piston using the electric motor until the setpoint brake pressure is reached.

A pressure supply unit for a brake system including a booster body that defines an axially extending cylinder. A piston is slideable within the cylinder. The piston defines a bore that receives a spindle. The spindle is rotationally fixed and axially moveable for providing the axial movement of the piston. A motor is positioned about the spindle and is configured to axially translate the spindle and piston. A ball and socket joint connects the piston and spindle while accommodating pivoting movement of the spindle. The ball and socket joint includes a ball at a front end of the spindle and a socket in the bore of the piston which receives the ball.

For a tank truck using an EBS, the present invention provides a tank truck rollover relieved control method based on electronic braking deceleration. Firstly, a tank truck rollover scene applicable to the relieved control method is defined; then, a least square method is adopted to establish a characterization function of tank truck braking deceleration; and finally, tank truck rollover relieved control is achieved on the basis of the characterization function of the braking deceleration and the EBS. The method fits out a function expression of the tank truck braking deceleration and can automatically select a proper braking deceleration under different rollover scenes according to kinematics information of the tank truck and vehicle body information; during tank truck braking deceleration, an operation of a driver is considered, so that man-machine effective combination is achieved; and relieved braking deceleration is conducted when the tank truck is in a potential rollover risk state, a situation that emergency braking is conducted when the tank truck has high rollover risk is avoided, and tank truck rollover control stability and effectiveness are improved.

A method for installing a stroke sensor is provided such that the stroke sensor can be easily adjusted using a simple process. The method has the steps of; obtaining a relationship between the magnetic field and the indicator value while moving the magnet in the first direction relative to the magnetic field detecting element within a predetermined relative movable range, and writing the relationship in the processor; after the relationship is written in the processor, preventing the predetermined relative movable range from being shifted in the first direction by means of a jig for preventing positional shift, wherein the jig includes an element that fixes relative positions between the magnetic field detecting element and the magnet; attaching the magnet and the magnetic field detecting element, which have been prevented from being shifted, to different structures that are movable in the first direction relative to each other, and removing the jig.

Disclosed is an apparatus for moving a brake pedal. The apparatus for moving a brake pedal according to the disclosure includes a push rod connecting the brake pedal and a piston of a master cylinder to displace the piston according to a pedal effort of the brake pedal, actuator generating power, a screw configured to displace the piston by receiving a rotational force from the actuator and performing a translational motion, and an anti-rotation portion preventing rotation of the screw, wherein the push rod passes through the screw and is connected to the piston to generate displacement of the piston independently with respect to the translational motion of the screw, and the screw is connected to the actuator to receive the rotational force, and by converting the rotational force into the translational motion by the anti-rotation portion, generates the translational motion of the piston, the push rod, and the brake pedal connected to the screw.