A brake apparatus for a vehicle may including: a cylinder including a supply flow path to supply working fluid of a reservoir and a hydraulic chamber connected to the supply flow path; a piston movably installed in the cylinder, and connected to a brake pedal; an elastic member installed in the hydraulic chamber so as to elastically support the piston; a sealing member installed on the outer surface of the piston so as to be in contact with the inner surface of the hydraulic chamber; and a communication flow path formed on the inner surface of the cylinder along the longitudinal direction of the cylinder, and guiding the working fluid of the hydraulic chamber to the opposite side of the moving direction of the piston, when the piston is moved.

Systems and methods are described for controlling a vehicle braking system. An electronic controller determines a target deceleration based at least in part on a detected displacement position of a brake pedal and determines an adjusted braking pressure to be applied to at least one wheel of the vehicle such that, regardless of the displacement position of the brake pedal and the target deceleration, the adjusted braking pressure is maintained outside of a defined range of braking pressures that corresponds to a NVH condition for the at least one wheel. The adjusted braking pressure is then applied to the at least one wheel of the vehicle.

A pedal value generator 14 for a motor vehicle 30, a pedal value generator arrangement 10 and a method for controlling a motor vehicle 30 are described. A first pedal actuating surface 16 and, at a distance thereto, a second pedal actuating surface 18 are arranged on a cross member 20. A sensor arrangement 24 detects a torque M of the cross member 20 with respect to a torque axis X arranged between the first and second pedal actuating surfaces 16, 18 and for supplying an electrical actuation signal B1, B2 as a function of torque M. When an actuating force acts upon first pedal actuating surface 16 motor vehicle 30 can be accelerated and when an actuating force acts upon second pedal actuating surface 18 it can be decelerated.

A method for operating an accelerator pedal-controlled distance controller of a vehicle. The distance controller regulates a distance to a target vehicle as a function of an actuator pedal value of the vehicle and activates automatic braking operations as necessary. A braking operation is aborted when the accelerator pedal value is increased during the braking operation.

An electric brake device is disclosed. The electric brake device includes a reservoir configured to store brake oil; a reaction force cylinder fluidically communicating with the reservoir and configured to change a pedal effort and a pressure of the brake oil in operative connection with a movement of a pedal; a wheel brake mechanism configured to restrain rotation of wheels of a vehicle in connection with the operation of the reaction force cylinder; and a pedal effort adjustment stopper configured to adjust a change in magnitude of the pedal effort according to the movement of the pedal, the pedal effort adjustment stopper comprising a coupling body mounted on at least one side of the reaction force cylinder and one or more pedal effort adjusters connected to the coupling body and movable in a longitudinal direction of the reaction force cylinder.

A brake system may include an actuation device, in particular a brake pedal, a first piston-cylinder unit with two pistons, in particular an auxiliary piston and a second piston, in order to supply a pressure medium to brake circuits via a valve device. One of the pistons, in particular the auxiliary piston, can be actuated by means of the actuation device. The brake system may further include a second piston-cylinder unit with an electric motor-powered drive, a transmission, and at least one piston to supply a pressure medium to at least one of the brake circuits via a valve device and a motor-pump unit with a valve device to supply a pressure medium to the brake circuits. According to one aspect, a hydraulic travel simulator is connected to a pressure or working chamber of the first piston-cylinder unit.

The present invention provides an apparatus for diagnosing a failure in a negative pressure sensor, a method for diagnosing a failure in a negative pressure sensor, and a brake apparatus capable of preventing or cutting down a reduction in a frequency at which an abnormality in the negative pressure sensor is diagnosed. The apparatus for diagnosing the failure in the negative pressure sensor includes a change amount monitoring portion configured to monitor a change amount of a detection signal of the negative pressure sensor when a brake pedal is returned after being pressed, and an abnormality determination portion configured to determine that the negative pressure sensor is abnormal if the change amount is a predetermined change amount or smaller.

An electric equipment component of a vehicle having an electric braking/steering device, including: a) an electric steering device with/without a continuous mechanical connection between a steering wheel and a steering gear mechanism, and an electronic steering control device and an electric steering actuator; an electropneumatic service brake device having an electropneumatic service brake valve device, an electronic brake control device, electropneumatic modulators and pneumatic wheel brake actuators; and a device having the electronic evaluation device of the electropneumatic service brake valve device and generating a second activation force independently of a driver's braking request, the further device acting on the control piston in the same or opposite direction to the first activation force when a braking request, independent of the driver's request, is present; the electronic evaluation device being integrated into the electronic steering control device, or the electronic steering control device being integrated into the electronic evaluation device.

The invention relates to a control device (10) for at least one electromechanical brake booster of a brake system of a vehicle having an electronics device (32) that is designed to compare a provided sensor signal (38) relating to a differential path (d) between a valve body (12), displaced by a controlled motor, of the electromechanical brake booster and an input rod (14) of the brake system with a specified normal value range, such that, if the sensor signal (38) relating to the differential path (d) lies outside the specified normal value range, the electronics device (32) is in addition designed to define a maximum limit value for a target quantity relating to a target motor torque to be carried out by the motor, at least taking into account the sensor signal (38), in such a way that, at least during a specified time interval after the defining of the maximum limit value, at most an actual motor torque corresponding to the defined maximum limit value can be carried out by the controlled motor. The present invention also relates to an electromechanical brake booster for a brake system of a vehicle, to a brake system for a vehicle, and to a method for operating an electromechanical brake booster of a brake system of a vehicle.

The present specification relates to a system and a method for preventing overheating of an axle in a construction equipment. A system for preventing overheating of an axle in a construction equipment is mounted in the construction equipment and transmits driving power of an engine to a wheel, and the system includes: a brake pedal; a brake sensor which detects displacement of the brake pedal when the brake pedal is manipulated by an operator; an exhaust brake which is mounted in the engine and operates and controls an opening degree of an exhaust gas discharge passageway of the engine; and a control unit which adjusts the opening degree of the exhaust gas discharge passageway by controlling the exhaust brake corresponding to the displacement of the brake pedal when manipulation of the brake pedal is detected by the brake sensor.