Boring of a hydraulic block of vehicle power braking system.

A stroke of a piston of a pedal travel simulator is limited via a spring ring that is inserted into a circumferential groove in a cylinder of the pedal travel simulator. The spring ring relieves the load on a cover of the pedal travel simulator that closes the cylinder of the pedal travel simulator.

A fluid separator includes a separator housing defining a longitudinal bore having first and second bore ends. A first fluid passage is in fluid communication with the bore at the first bore end. A second fluid passage is in fluid communication with the bore adjacent the second bore end. A third fluid passage is in fluid communication with a portion of the bore spaced apart from both the first and second bore ends. A free-floating piston is located inside the bore and configured for longitudinal movement with respect to the bore responsive to fluid pressure within the bore. A biasing spring urges the piston toward the second bore end. An end cap is located at the second bore end. The end cap is maintained on the housing via at least two retainers.

An electrohydraulic vehicle braking system is provided, comprising an electrically controllable first hydraulic pressure generator and an electrically controllable second hydraulic pressure generator. The braking system further comprises a first valve device for each wheel brake, having at least one first valve, wherein in an electrically uncontrolled state the first valve device separates its associated wheel brake from an output of the first hydraulic pressure generator, and in an electrically controlled state connects it to the output of the first hydraulic pressure generator. In addition, a second valve device for each wheel brake is provided, having a second valve between an output of the second hydraulic pressure generator and its associated wheel brake, as well as a third valve between this wheel brake and a first hydraulic fluid reservoir. The first valve device and the second valve device are arranged in parallel to one another.

A braking system includes a pedal assembly, a hydraulic assembly, a reversing assembly, a driving wheel assembly, a pedal feel simulator, and a first electronic control unit. The first electronic control unit is electrically connected to the reversing assembly, and controls the reversing assembly to switch a working location. The reversing assembly includes at least two working locations. When the reversing assembly is at a first working location, a brake fluid output port of the hydraulic assembly is connected to the driving wheel assembly through the reversing assembly. When the reversing assembly is at a second working location, the first electronic control unit is electrically connected to the driving wheel assembly, and controls the driving wheel assembly to provide brake force.

Device for a brake travel emulator with at least one integrated sensor, comprising a housing (5), a force sensor (18) both being connected to a middle part of a connection means (4). The force sensor (18) being arranged at a static unit (2), the housing (5) further comprising at least one conical compression spring (6), an axially sliding component (7), a connecting rod (9) comprising a varying diameter geometry, an oscillating means (48) capable of creating an electric field, and a displacement sensor (46), the force sensor (18) further comprising, a micro-controller (50), means for receiving applied force (41) and at least four coils (30, 31, 32, 33).

A method is provided to check for presence of gas bubbles in an electronically slip-controllable motor vehicle brake system that includes brake circuits to which wheel brakes are connected, a pressure generator to charge the brake circuits with a brake pressure, and sensors to detect an actuating signal of the pressure generator and measure the brake pressures in the brake circuits. Disturbances are recognized by ascertaining from the signal a setpoint value for a brake pressure to be obtained and comparing it to an actual value of the brake pressure or by determining that an actual volume of the pressurizing medium displaced into the brake circuits, ascertainable from the signal, is greater than a limiting value that is determined for a setpoint value for the pressurizing-medium volume to be displaced into the brake circuits in order to generate the actual value of the brake pressure.

Embodiments herein are directed to an emulator assembly. The assembly includes a housing with a cavity, a pedal arm, an elongated member, a carrier, an end plate and a compressible member. The pedal arm is at least partially received in the cavity and has a pedal pad on one end. The elongated member extends and couples to the pedal arm on one end and couples to a carrier on an opposite other end. The end plate is spaced apart from the carrier. The compressible member is positioned in the space between the carrier and the end plate. When the pedal pad is depressed, the elongated member moves the carrier in a direction towards the end plate which drives the carrier into the compressible member such that the compressible material compresses to generate a force feedback onto a foot positioned on the pedal pad.

An electronic brake system and a method for operating the same are disclosed. The electronic brake system includes an integrated master cylinder, a hydraulic-pressure supply device, and a hydraulic control unit. The integrated master cylinder allows a pressing medium to be discharged based on displacement of a brake pedal and at the same time provides proper pedal feel for the user. The hydraulic control unit controls hydraulic pressure of a pressing medium supplied to respective wheel cylinders. The electronic brake system operates in different ways according to a normal operation mode and an abnormal operation mode.

Provided are an electronic brake system and a method of operating the same, capable of performing a normal operation mode and an abnormal operation mode by including an integrated master cylinder configured to discharge a pressurizing medium according to a displacement of a brake pedal while providing a driver with a pedal fee, a liquid pressure supply device configured to generate a liquid pressure by operating a hydraulic piston according to an electrical being output on the basis of the displacement of the brake pedal, and a hydraulic control unit configured to a liquid pressure of a pressurizing medium to be supplied to each wheel cylinder.