A control unit for at least one vehicle deceleration device of a vehicle. The control unit includes an electronics unit including a memory unit in which a characteristic curve is stored which specifies a relation between a first input variable specified by an operation of a brake actuation element of the vehicle, and a setpoint variable regarding a setpoint vehicle deceleration exerted on the vehicle using the at least one vehicle deceleration device. The electronics device newly specifies at least one characteristic curve value of the characteristic curve under consideration of a second input variable specified by the driver by an operation of an accelerator of the vehicle, a current traffic and/or environment situation, and/or an ascertained position of the vehicle and a position-specific item of traffic and/or environment information, and the correspondingly modified characteristic curve is stored in the memory unit.

A method for operating a hydraulic braking system, which includes at least one actuatable actuator for generating a hydraulic brake pressure using brake fluid. A first leakage loss of the brake fluid in the braking system is ascertained as a function of a volume of a pressure chamber of the actuator at a starting pressure at the beginning of a braking process and the volume of the pressure chamber when the starting pressure is reached at the conclusion of the braking process. A second leakage loss of the braking fluid is continuously calculated while the braking process is carried out. The first leakage loss is compared to the second leakage loss for the plausibility check after a braking process was carried out.

A multi-circuit, hydraulically open brake system includes a first pressure generator assigned to a main system with a first energy supply and a first evaluation and control unit (ECU), and is connectable via a first shut-off valve to wheel brake(s) of a first brake circuit and via a second shut-off valve to wheel brake(s) of a second brake circuit. A second pressure generator is assigned to a secondary system which includes a second energy supply and a second ECU, and is connectable via a third shut-off valve to wheel brake(s) of the first brake circuit and via a fourth shut-off valve to wheel brake(s) of the second brake circuit. The second ECU controls the second pressure generator. Components of the modulation unit for individual brake pressure modulation are assigned to the main system, and the components are controlled by the first ECU and are supplied by the first energy supply.

A brake system for motor vehicles may include an actuation device (e.g., brake pedal), a first piston-cylinder unit having at least one piston that separates two working chambers, a control device and a pressure supply unit driven by an electric motor and having a double-stroke piston delimiting working chambers. At least one brake circuit may have associated therewith at least one wheel brake, and each wheel brake may be connected to an associated hydraulic connecting line via a controllable switching valve. An outlet valve may be assigned to a single wheel brake or to a single wheel brake of each brake circuit in a hydraulic connection between the wheel brake and a pressure medium storage container.

A method for controlling a braking system of a motor vehicle. The braking system includes hydraulically actuated wheel brakes as well as a linear actuator and a pump as electrohydraulic pressure-generating devices, according to which, during a braking operation of the motor vehicle, a parameter describing an actual behavior of the braking system of the motor vehicle is monitored and compared with a stored threshold value. In the event that the monitored parameter exhibits a defined deviation from the threshold value, the linear actuator and the pump are switched to synchronous operation by simultaneously operating the linear actuator and the pump and applying brake pressure to the hydraulically actuated wheel brakes via the linear actuator and the pump. A current volume consumption of the linear actuator is detected as a parameter describing the actual behavior of the braking system of the motor vehicle.

Example hydraulic brake actuators and related methods are disclosed herein. An example hydraulic brake actuator includes a rotary valve disposed in a bore of a housing. The rotary valve includes a shaft rotatably disposed within a sleeve. The sleeve and the shaft have ports that align at certain rotational positions to create a flow path between the bore and an inner chamber of the shaft. The example hydraulic brake actuator also includes a pump coupled to the shaft to increase and decrease a pressure within the inner chamber of the shaft.

A method for operating a hydraulic braking system of a motor vehicle, including at least one hydraulically actuatable wheel brake, a brake pedal unit including an actuatable brake pedal for predefining a setpoint braking torque, and a pressure generator which is electrically actuated in order to generate a hydraulic pressure as a function of the setpoint braking torque, an electrical operating current of the pressure generator being limited to a first predefinable limiting value during normal operation. The brake pedal unit is monitored for the nature of actuation of the brake pedal, and the limitation of the operating current is canceled if highly dynamic actuation of the brake pedal is detected.

A sensor monitoring device that comprises: a first controller ECA into which a detected value Smn from a sensor SMN is inputted via a first signal line LMA; a second controller ECB into which the detected value Smn is inputted via a second signal line LMB; and a communication bus CMB that transmits signals between the first controller ECA and the second controller ECB. The second controller ECB reads in the detected value Smn as a second processing value Smb and transmits the second processing value Smb to the first controller ECA via the communication bus CMB. The first controller ECA reads in the detected value Smn as a first processing value Sma, receives the second processing value Smb, and, on the basis of the first processing value Sma and the second processing value Smb, determines the suitability of the first processing value Sma.

A method for the functional testing of a pressure generator assembly in an electronically slip-controllable power braking system having redundant brake pressure generation for an autonomously drivable motor vehicle. The method relates to carry out a regular test of the functional capacity of a secondary pressure generator assembly. A primary pressure generator assembly and the secondary pressure generator assembly are hydraulically connected, parallel to one another, to a brake circuit to which a wheel brake is connected. During the method, the wheel brake is decoupled from the brake circuit. At least one pressure generator of the primary pressure generator assembly, or a pressure generator of the secondary pressure generator assembly, is actuated in order to apply pressure to the brake circuit.

A braking system including four hydraulically actuatable wheel brakes. A normally closed outlet valve is assigned to each wheel brake and a normally open inlet valve is assigned to each wheel brake. Two pressure supply devices are provided for active pressure build-up in the wheel brakes. A first and a second brake circuit are hydraulically configured with two wheel brakes respectively, wherein in each brake circuit a respective pressure supply device is hydraulically connected to two wheel brakes. A first and a second control and regulating unit are provided, wherein the first control and regulating unit electrically controls the pressure supply device of the first brake circuit, and wherein the second control and regulating unit hydraulically controls the pressure supply device of the second brake circuit, and the two control and regulating units are connected together via a data interface.