Disclosed is an electronic brake system. The electronic brake system comprises a hydraulic pressure supply apparatus generating a hydraulic pressure by using a piston operated by an electrical signal outputted corresponding to a displacement of a brake pedal and including a first pressure chamber provided at one side of the piston movably accommodated in a cylinder block to be connected to one or more wheel cylinders and a second pressure chamber provided at the other side of the piston to be connected to one or more wheel cylinders; a first hydraulic passage communicating with the first pressure chamber; a second hydraulic passage branched from the first hydraulic passage; a third hydraulic passage branched from the first hydraulic passage; a fourth hydraulic passage communicating with the second pressure chamber; a fifth hydraulic passage branched from the fourth hydraulic passage to join with the second hydraulic passage; a sixth hydraulic passage branched from the fourth hydraulic passage to join with the third hydraulic passage; a first control valve provided on the second hydraulic passage to control the flow of oil; a second control valve provided on the third hydraulic passage to control the flow of oil; a third control valve provided on the fifth hydraulic passage to control the flow of oil; a fourth control valve provided on the sixth hydraulic passage to control the flow of oil; a first hydraulic circuit branched from the second hydraulic passage or the fifth hydraulic passage to be connected to two wheel cylinders; and a second hydraulic circuit branched from the third hydraulic passage or the sixth hydraulic passage to be connected to two wheel cylinders.

A method for controlling a driver assistance system is provided, as is a corresponding driver assistance system and a computer program product.

A braking apparatus for a vehicle may include: a pedal stroke sensing unit configured to sense a pedal stroke of a brake pedal, and output a pedal stroke signal; and a control unit configured to control a brake actuator for braking the vehicle, based on the pedal stroke signal inputted from the pedal stroke sensing unit, and output a ramp signal in which information on whether a braking action of the vehicle has been performed is reflected, based on a reference voltage signal which is preset to determine whether the brake pedal is stepped on and a voltage signal converted from the pedal stroke signal.

A method of determining the state of a pedal actuator system within a vehicle includes receiving a position sensor signal indicative of a position of an actuator pedal within the pedal actuator system, receiving a force sensor signal indicative of a compressive force applied to the actuator pedal, and determining, with a processor, a state of the actuator pedal based on the position sensor signal and the force sensor signal. The state of the actuator pedal is one of a normal operating state and a fault state.

A technique is described for the redundant registering of an actuation of a motor-vehicle brake system. A device which is provided for this purpose comprises a first sensor for generating a first sensor signal which indicates a movement of a mechanical input component of the brake system, and a second sensor for generating a second sensor signal which indicates a hydraulic pressure in the brake system. A processing device which is coupled to the two sensors is configured for selectively outputting an actuation signal which is generated on the basis of the first sensor signal or an actuation signal which is generated on the basis of the second sensor signal. The actuation signal indicates an actuation of the brake system.

An apparatus is provided for a vehicle having a driven rear axle and an undriven rear axle. The apparatus comprises a data storage device arranged to store a slip threshold at which a powertrain braking function is disabled, a first sensor for detecting speed of a wheel on the driven rear axle and providing a first signal indicative thereof, a second sensor for detecting speed of a wheel on the undriven rear axle and providing a second signal indicative thereof, a third sensor for detecting a condition of the vehicle and providing a third signal indicative thereof, and an electronic controller arranged to (i) process at least the first and second signals to provide a fourth signal indicative of an amount of slip, and (ii) modify the stored slip threshold value based on a combination of the third and fourth signals.

A vehicle trailer brake system and method with a hydraulic control line and supplementary line arranged between a towing vehicle and a towed trailer, wherein the trailer braking system is actuated from the towing vehicle by controlling the hydraulic pressure in the control line and the supplementary line. The trailer brake system may be operated to actuate a trailer brake using a trailer-based hydraulic accumulator, to provide for relatively fast response time for the trailer brake.

A braking controller and method in a towing vehicle towing one or more towed vehicles as a combination vehicle provides brake control of the one or more towed vehicles based on a level of braking force applied to the towing vehicle. A non-enhanced braking mode applies a first level of braking force to the towed vehicles in a predetermined reduced proportion relative to the level of braking force applied to the towing vehicle, and an enhanced braking mode applies a second level of braking force to the towed vehicles greater than the first level of braking force. A controller deceleration command input receives a deceleration command signal which is compared against predetermined threshold deceleration rate value or against a current deceleration value being executed by the combination vehicle and, based on a result of the comparisons, either the enhanced or the non-enhanced braking modes are implemented by the controller.

A braking controller and method in a towing vehicle towing one or more towed vehicles as a combination vehicle provides brake control of the one or more towed vehicles based on a level of braking force applied to the towing vehicle. A non-enhanced braking mode applies a first level of braking force to the towed vehicles in a predetermined reduced proportion relative to the level of braking force applied to the towing vehicle, and an enhanced braking mode applies a second level of braking force to the towed vehicles greater than the first level of braking force. A controller deceleration command input receives a deceleration command signal which is compared against predetermined threshold deceleration rate value or against a current deceleration value being executed by the combination vehicle and, based on a result of the comparisons, either the enhanced or the non-enhanced braking modes are implemented by the controller.

A system includes a computer including a processor and a memory, the memory storing instructions executable by the processor to actuate a vehicle brake according to a specified brake torque, receive user input to exceed the specified brake torque, and actuate a brake fluid valve to attain a brake fluid pressure to maintain the specified brake torque.