A multi-disc brake is provided. The brake can include a radial wear pin cartridge for wear indication. The brake can include an integrated water jacket for cooling.

A brake device of the present invention includes: a wheel brake unit for braking a wheel; an electric motor for driving the wheel brake unit; a speed reducer for decelerating rotation of the electric motor; a rotation-linear motion converter for converting a rotational output of the speed reducer into a linear motion; and a braking force transmission member for transmitting the linear motion produced by the rotation-linear motion converter to the wheel brake unit.

A vehicle brake pad (100) comprising: a support plate (21); a friction pad (20); at least a shear force sensing device; and an electrical circuit configured to collect signals from the shear force sensing device (1); wherein the shear force sensing device (1) comprises: a sheet (2) of piezoelectric material having a first and a second main faces (3, 4) parallel to each other identifying a shear stress direction (S); at least a first digitated reading electrode (5) located on the first main face (3); at least a second digitated reading electrode (6) located on the second main face (4), the first and second reading electrodes (5, 6) having digits (5a, 6a) aligned along a reading direction (R) orthogonal to the stress shear direction (S); at least a first digitated polarizing electrode (7) located on the first main face (3) and interdigitated with the first digitated reading electrode (5); and at least a second digitated polarizing electrode (8) located on the second main face (4) and interdigitated with the second digitated reading electrode (6); and wherein the piezoelectric material has a bulk electric polarization with vector field (E) transversally oriented to the reading direction (R), each pair of aligned digits (5a, 6a) of the first and second reading electrodes (5, 6) enclosing a respective zone (2a) of the piezoelectric material having the

Methods, apparatus, systems, and articles of manufacture to extend brake life cycle are disclosed herein. An example vehicle disclosed herein includes a brake including a rotor and a brake pad and a brake controller to detect a request to determine a wear level of the brake pad, activate the brake to cause contact between the brake pad and the rotor, and determine, based on a latency between the activation of the brake and the contact between the brake pad and the rotor, the wear level.

A vehicle includes a system and a method of monitoring a condition of a brake fluid. The system includes a first sensor configured to measure a fluid level of the brake fluid within a reservoir, a second sensor configured to measure a concentration of the brake fluid, a third sensor configured to measure a temperature of the brake fluid, and a processor. The processor is configured to estimate the condition of the brake fluid from the fluid level, the concentration and the temperature and send a signal to a display, the signal indicative of the condition of the brake fluid.

A method of controlling a brake system that includes a motor and an actuator. The method includes moving the actuator towards a retracted position; activating a timer; monitoring a motor characteristic of the motor and monitoring the timer; and determining the actuator has reached the retracted position after the timer meets or exceeds a predetermined time threshold before the motor characteristic has reached or exceeded a predetermined motor characteristic threshold.

A braking torque sensor of a brake is provided, the braking torque sensor includes: a long circular shaft hole arranged on a brake arm of the brake; a connecting plate configured to detect a braking displacement which is generated by the hinge shaft of the brake element in a long circular shaft hole and varies with the magnitude of the friction force when the braking action is performed by the brake, and convert the detected displacement into a plate deformation of the connecting plate; and a tension sensor configured to convert the plate deformation generated due to the braking action on the connecting plate into force information, and transmit the force information outwards in a form of electrical signal or digital signal. The detection result of the braking torque sensor is consistent with the actual result, so that an abnormal condition of the brake can be detected in time.

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.

An electro-mechanical brake includes: a brake disc; a friction pad; a pressing unit configured to press the friction pad toward the brake disc; a motor supplying power to the pressing unit; a current sensor; a position sensor configured to measure a position of the pressing unit; and an initial position calculating unit calculating at least one of a home position or a contact point of the pressing unit, wherein the pressing unit is configured to pass through a first check point at which a first current is measured, and a second check point at which a second current greater than the first current is measured, and wherein the initial position calculating unit calculates at least one of the home position or the contact point based on the first current, the first check point, the second current, and the second check point.

The present disclosure relates to an electronic parking brake system including a motor actuator operated by an electric motor, wherein the electronic parking brake system further includes a motor driving circuit provided to drive the electric motor, and a controller configured to determine a temperature of the electric motor from a temperature of a brake disc during a parking operation, determine a target current based on the determined motor temperature, and control the electric motor depending on the determined target current.