The invention relates to an air-actuated vehicle system, comprising an actuating device which houses a pressurizable chamber, a pressurized air source, a conduit extending between the pressurized air source and the actuating device, for enabling the pressurizable chamber of the actuating device to be pressurized with air from the pressurized air source, and a pressure sensing arrangement measuring a first pressure inside the pressurized air source and a second pressure inside the pressurizable chamber, wherein the pressure sensing arrangement is configured to determine that the system has an air leakage when the result of the measurement(s) of said second pressure deviates from an expected result, wherein the expected result is based on the result of the measurement(s) of said first pressure. The invention also relates to a method of leakage detection.

An electronic parking brake system includes an electronic parking brake, including an electric motor, and a controller configured to control the electric motor to engage the electronic parking brake, and when a vehicle motion detection signal is received from a black box through a controller area network (CAN) bus in a state where an ignition is turned off and the electronic parking brake is engaged, the controller is configured to re-engage the electronic parking brake.

An electronic parking brake system includes an electronic parking brake, including an electric motor, and a controller configured to control the electric motor to engage the electronic parking brake, and when a vehicle motion detection signal is received from a black box through a controller area network (CAN) bus in a state where an ignition is turned off and the electronic parking brake is engaged, the controller is configured to re-engage the electronic parking brake.

The present disclosure relates to an electrically activatable actuating unit (106) for a motor vehicle brake system (1000), having a housing body (122) and an actuating member (124) arranged in a recess (150) of the housing body (122), wherein the actuating member (124) is coupleable to a brake pedal at a first end and coupleable to a motor vehicle brake (400) at a second, opposite end. The housing body (122) and the actuating member (124) are arranged to be displaceable in a braking direction to actuate the motor vehicle brake (400). The electrically activatable actuating unit (106) furthermore comprises a damping element (180, 180A, 180B), which is arranged in the recess (150) of the housing body (122) such that it abuts frictionally against an outer wall of the actuating member (124) by means of an inner circumferential face (184) and abuts frictionally against an inner wall (170) of the housing body (122) by means of an outer, opposite circumferential face (186), which inner wall delimits the recess (150).

The present disclosure relates to an electrically activatable actuating unit (106) for a motor vehicle brake system (1000), having a housing body (122) and an actuating member (124) arranged in a recess (150) of the housing body (122), wherein the actuating member (124) is coupleable to a brake pedal at a first end and coupleable to a motor vehicle brake (400) at a second, opposite end. The housing body (122) and the actuating member (124) are arranged to be displaceable in a braking direction to actuate the motor vehicle brake (400). The electrically activatable actuating unit (106) furthermore comprises a damping element (180, 180A, 180B), which is arranged in the recess (150) of the housing body (122) such that it abuts frictionally against an outer wall of the actuating member (124) by means of an inner circumferential face (184) and abuts frictionally against an inner wall (170) of the housing body (122) by means of an outer, opposite circumferential face (186), which inner wall delimits the recess (150).

This electric braking device uses drive torque of an electric motor to push a friction member against a rotating member secured to a vehicle wheel and produce braking torque in the vehicle wheel. This device comprises a body power source for electric motor power supply secured to a body of the vehicle, and a vehicle wheel power source for electric motor power supply secured to the vehicle wheel. The body power source supplies power to the vehicle wheel power source via a first electric path, and the vehicle wheel power source supplies power to the electric motor via a second electric path. When braking torque is produced in the vehicle wheel, the electric motor is normally driven using the vehicle wheel power source. An electric braking device is thereby provided in which a power line electrically connecting the body side and the vehicle wheel side bends readily.

This electric braking device uses drive torque of an electric motor to push a friction member against a rotating member secured to a vehicle wheel and produce braking torque in the vehicle wheel. This device comprises a body power source for electric motor power supply secured to a body of the vehicle, and a vehicle wheel power source for electric motor power supply secured to the vehicle wheel. The body power source supplies power to the vehicle wheel power source via a first electric path, and the vehicle wheel power source supplies power to the electric motor via a second electric path. When braking torque is produced in the vehicle wheel, the electric motor is normally driven using the vehicle wheel power source. An electric braking device is thereby provided in which a power line electrically connecting the body side and the vehicle wheel side bends readily.

A brake control device capable of preventing a braking force from being excessive when information cannot be transmitted between a first control unit configured to control operation of a boost mechanism and a second control unit configured to control operation of a hydraulic control mechanism. When a second ECU (32) cannot transmit information to a first ECU (26) due to a disconnection of a signal line (27), the second ECU carries out backup control of detecting a braking operation amount of a driver based on signal input from hydraulic pressure sensors (29), and operating a hydraulic pressure supply device (30) based on the detected braking operation amount, to thereby pressurize insides of wheel cylinders. In this case, the second ECU decreases a pressurization amount of a pressure inside the wheel cylinders when a pressure of a master cylinder (8) exceeds a predetermined value (PM0) during the backup control.

The purpose of the present invention is to provide a system in which the reliability of an automatic driving system can be excellently complemented by a different control system while the automatic driving system is effectively used. The vehicle control device outputs to a drive device one of a first control signal generated on the basis of automatic driving control information, and a second control signal generated on the basis of the relative information between a vehicle and a surrounding object. If an abnormality is detected in the automatic driving control information, the second control signal is output to the drive device in place of the first control signal.

A vehicle control device includes a periphery-information detection unit that detects information on the periphery of a vehicle; a travel-state detection unit that detects the travel state of the vehicle; a travel controller that controls autonomous travel of the vehicle based on the information on the periphery, the travel state , a higher-level action plan for reaching a destination, and a lower-level action plan for controlling at least one of a vehicle-speed target value and a steering target value to accomplish the higher-level action plan; actuator units each including a redundant configuration; a higher-level action-plan compensation-range computation unit that computes a compensation range for the higher-level action plan that allows travel where performance of one of the actuator units has decreased; and a higher-level action-plan limiting unit that limits the higher-level action plan by using the compensation range computed by the higher-level action-plan compensation-range computation unit.