An electro-hydraulic brake system may include a brake input device manipulated by a driver to brake a vehicle, a brake input detecting sensor configured to detect a brake input value of the driver through the brake input device, a pressure generating device configured to generate a brake hydraulic pressure, a wheel cylinder configured to receive the brake hydraulic pressure generated from the pressure generating device and to generate braking power for braking rotations of each vehicle wheel, a hydraulic pressure supply line connected between the pressure generating device and the wheel cylinder to transfer the brake hydraulic pressure generated from the pressure generating device to each wheel cylinder, and a controller configured to output a control signal for controlling an operation of the pressure generating device to allow the pressure generating device to generate a target brake hydraulic pressure based on a signal of the brake input detecting sensor.

Provided is a vehicle brake system equipped with an electric brake and which has high reliability and enables redundancy at low cost. This vehicle brake system 1 is equipped with a mutually connected master controller 30 and first and second sub-controllers 40, 41, and an output cut-off control unit 200. Each of the controllers includes: a braking force calculation section for calculating the braking force of the electric brake; a self-determination section for determining whether or not the controller itself is normal; and an other-determination section for comparing the braking force calculation results of the controllers to determine whether the other two are normal. Upon determining that the master controller is not normal, the output cut-off control unit cuts off the output of the master controller, the determination being made on the basis of the self-determination result made by the master controller, the self-determination result and determination result regarding the master controller made by the first sub-controller, and the self-determination result and determination result regarding the master controller made by the second sub-controller.

A brake system comprises a reservoir; a brake pedal; a master cylinder including a first master chamber, a second master chamber, a first master piston, and a second master piston; a first hydraulic circuit including at least one first hydraulic wheel brake; a second hydraulic circuit including at least one second hydraulic wheel brake; and a hydraulic pressure supplier including an actuator for pressurizing the first hydraulic circuit and the second hydraulic circuit depending on an operation of the brake pedal in a normal operating mode. The master cylinder further comprises a locking chamber and an elastic pedal feel element arranged in the first master chamber to be in contact with the first master piston and the second master piston for generating a pedal force when the brake pedal is operated while the second master piston is locked in the normal operating mode.

A hydraulic brake actuation assembly with a first and a second spool is disclosed. The hydraulic brake actuation assembly includes a first and a second subassembly which are configured to be mounted to each other in a pre-assembled manner. The first subassembly includes the first spool and a first actuation piston which are moveable along a first axis respectively. At least one first spring is located between the first spool and the first actuation piston along the first axis. The first subassembly includes the second spool and a second actuation piston which are moveable along a second axis respectively. At least one second spring is located between the second spool and the second actuation piston along the second axis. The first and the second axis are parallel to each other. The second subassembly includes a third and a fourth actuation piston. The third actuation piston is moveable along the first axis. It has a third contact surface which is able to contact a first contact surface of the first actuation piston. The fourth actuation piston is moveable along the second axis. It has a fourth contact surface which is able to contact a second contact surface of the second actuation piston.

A brake system for a vehicle having wheels. The brake system (4) comprises: a brake assembly (8) for supplying a braking effort to the wheels on actuation of the brake assembly and brake input means (20) co-operable to actuate the brake assembly via a brake-by-wire connection. The brake input means are connected to decoupling means (26, 34) for hydraulically decoupling the brake input means from at least one of the brake assembly and a brake simulator (28). A controller (10) is configured for sending, in dependence on a defined condition, a feedback command to the decoupling means to actuate the decoupling means and thereby impart haptic feedback to the brake input means. A method of imparting haptic feedback is also described as are software and processor.

A redundant control system is applied to a brake-by-wire (BBW) system. The redundant control system applied to the BBW system includes electromechanical brakes (EMBs) provided at wheels of a vehicle and configured to perform brake control of the vehicle, controllers connected to the EMBs, respectively, and a local gateway on a first communication line configured to receive information on the vehicle and a command of a driver and to transmit the information on the vehicle and the command of the driver to the controllers, where the controllers are configured to receive the information on the vehicle and the command of the driver through a second communication line.

Systems and methods are provided for controlling one or more brakes of the vehicle. The system may include a processor and a memory in communication with the processor with a brake control module. The brake control module includes instructions that, when executed by the processor, cause the processor to control the one or more brakes of the vehicle when the vehicle is in a first mode using a brake-by-wire system. When the vehicle is in a second mode, control the brake-by-wire system such that the one or more brakes of the vehicle are controlled using a mechanical braking system and the brake-by-wire system.

A method for operating a braking assistance system of a vehicle, wherein the braking assistance system assists a braking of the vehicle by a vehicle braking device in the event of a hazard braking. To differentiate between the hazard braking and a normal braking, at least two variables, representing a braking demand of a driver of the vehicle, are ascertained and a threshold value is established for each variable wherein hazard braking is recognized when at least the two variables exceed their particular threshold value, whereupon an automated braking intervention by the braking assistance system is initiated with the aid of the vehicle braking device. Furthermore, at least one driving-situation variable representing the instantaneous driving situation of the vehicle is ascertained and the at least two threshold values are changed depending on the at least one driving-situation variable.

A brake system includes an electromechanical brake having a friction surface, a lining support having a brake lining, an electric motor for moving the lining support, and a control and monitoring unit. The control and monitoring unit ascertains, from a first value ascertained during a first movement of the lining support by the electric motor, an operating parameter of at least one part of the brake, and a second value ascertained during a second movement opposite to the first movement of the lining support, by the electric motor, an operating behavior value for a real operating behavior of the relevant brake, and ascertains, by comparing the at least one real operating behavior value to at least one stored operating behavior expectation, a correction factor. The brake control system is corrected by the one correction factor and a regulator of the electric motor is activated using the corrected brake control signal.

The present disclosure in at least one embodiment provides a braking system comprising: a pedal master unit; an electric booster unit; a reaction disc that generates a pedal force when compressed by at least one of the operating rod or the motor piston; and a controller that, upon receiving a regenerative braking interruption signal during the cooperative braking of the vehicle, senses a pressure change in the master cylinder and compensates for a displacement of the motor piston by an amount corresponding to the pressure change.