An electric brake including: a brake mechanism configured to transmit a thrust force generated through drive of an electric motor to a piston, the piston being configured to move brake pads to be pressed against a disc rotor; a thrust force sensor configured to detect the thrust force transmitted to the piston; and an ECU for rear electric brake configured to control, based on a detection value obtained by the thrust force sensor, the drive of the electric motor in accordance with a brake command. The ECU for rear electric brake is configured to learn, as a reference point of a piston thrust force, a detection value obtained by the thrust force sensor when the electric motor is driven to move the piston in a direction for pressing the piston against the disc rotor in a range in which the brake pads are not in contact with the disc rotor.

A method for operating a motor vehicle having a braking device for braking the motor vehicle, including the steps: forecasting an anticipated time period until a reduction in speed or braking of the motor vehicle, triggered by a driver assistance system or by the driver of the motor vehicle, depending on vehicle data relating to the motor vehicle and/or environmental data relating to the motor vehicle environment, and triggering a respective function of the braking device when a triggering condition assigned to the respective function is satisfied, wherein a respective triggering condition is satisfied or can be satisfied only when the anticipated time period falls below the limiting time value assigned to the respective function, wherein at least two of the functions are assigned limiting time values that differ from each other.

A hydraulic brake assembly (12) includes a housing (24) having first and second side-by-side bores (30), each defining a respective master cylinder assembly. Each master cylinder assembly includes a master cylinder piston (32) slidably movable by actuation of a respective brake pedal (18a, 18b) to and between an active position and an inactive position. A spool (74) slidably disposed within a piston bore (70) of the master cylinder piston (32) is operable in a first mode to direct hydraulic fluid from a quick-fill chamber (62) to a master cylinder chamber (50) at a first pressure upon initial movement of the master cylinder piston (32) from the inactive position toward the active position. The spool (74) is operable in a second mode to direct hydraulic fluid from the quick-fill chamber (62) to a tank (20) when pressure in the master cylinder chamber (50) reaches a predefined threshold.

The present application relates to a braking method and a braking system. The braking method of the present application may be performed by an electro-mechanical braking system including at least one axle control unit and a plurality of electro-mechanical braking devices provided at ends of wheels and driven by motors to apply friction braking forces to the wheels. The electro-mechanical braking devices are controlled by at least one axle control unit to switch between a state in which no friction braking is applied and a state in which friction braking is applied in response to a braking requirement. The braking method includes: setting a brake clearance between a brake pad and a brake disc to an initial value; determining whether there is a braking requirement; determining whether regenerative braking is performed; and in response to the performing of regenerative braking, setting the brake clearance to a preset value, wherein the preset value is smaller than the initial value. The brake clearance is reduced before friction braking is required, the respond time to the friction braking requirement is shortened, so that the switch between friction braking and regenerative braking is smoother, thereby the pause and transition during the switch between brakings is effectively reduced.

When a brake system on a commercial vehicle, lateral acceleration and/or yaw of the vehicle are monitored and compared to a first predetermined threshold. If the first predetermined threshold is exceeded, a precharge command is sent to the brake system to precharge one or more air chambers by temporarily deactivating a modulator valve and activating an antilock traction relay valve in order to charge the air chambers up to a level permitted by the modulator valve. Upon detecting a panic braking event, a command signal is sent to the brake system to release the precharged air to facilitate braking.

A method for controlling the braking power in an electrohydraulic braking system of a transportation vehicle which includes initiating a braking process; detecting a current state of the electrohydraulic braking system; increasing the braking pressure based on the current state of the electrohydraulic braking system, wherein braking pressure is built up more rapidly by targeted, staggered supply of braking pressure to individual parts of the braking system.

A braking system for a vehicle has a disc brake having a brake disc having a disc brake caliper and a pair of pads, an electric actuator operatively connected to a piston acting as a pusher on at least one of the pads, and a processing and control unit operatively connected to the electric actuator and programmed to move the piston and respective pad to a forward position to press the pad into contact with the brake disc during a braking demand, and bring the piston and respective pad to a rest or rearward position. A gap is identified between the pad and the brake disc. The processing and control unit is programmed to implement an algorithm that, in absence of a braking demand, operates the electric actuator by varying the gap according to at least one dynamic parameter of the vehicle defining a prediction of a braking demand.

A vehicle electric brake device configured such that, when no braking force request is made, a piston of an actuator of the electric brake device is retracted to a set backward position so as to allow a clearance to exist between a friction member and a rotary body of the device, wherein a controller of the device is configured to execute, for the actuator, a clearance removing control in which the piston is advanced at a first speed and subsequently advanced such that a piston advancing speed is reduced from the first speed to a second speed, so as to remove the clearance, the clearance removing control being executed when the braking force request is generated, and a braking-force-request-dependent control in which a braking force in accordance with a degree of the braking force request is generated, the braking-force-request-dependent control being executed after execution of the clearance removing control.

Herein is disclosed an image-based detection system comprising, one or more image sensors, configured to receive images of a vicinity of a control; and one or more processors, configured to identify within the images a control actuator and the control; detect a trigger action of the control actuator relative to the control based on the images; and switch from a normal control mode to a safety mode according to the detected trigger action.

A pre-filling device for a braking system. The pre-filling device includes a pre-filling channel, a pre-filling pressure being inside the channel when the braking system is in a rest and hydro-boost position, and a mechanical valve configured to be opened following a transition from the rest and hydro-boost position to a working position of the braking system; and a hydraulic valve cooperating with the mechanical valve setting the pre-filling pressure inside the channel. The hydraulic valve includes in a first area, facing the mechanical valve, a hole communicating with the channel, and in a second area, hydraulically isolated from the first area, a preloaded resilient element in a chamber held at atmospheric pressure. The hydraulic valve is configured to be connected or not to be connected, by a reciprocating movement inside the channel, to a hydro-booster device and to keep a predetermined pre-filling pressure upon varying of the hydro-boost pressure.