Brake system for commercial vehicle

A brake system for a motor vehicle, comprising:

• at least one electronic control unit;
• at least one service brake device;
• at least one parking brake device;
• and
• at least one wheel-blocking detection device;
• wherein
• the wheel-blocking detection device is configured to:
• detect at least one blocking condition of one or more wheels of the motor vehicle,
• generate at least one blocking condition signal in response to the detected blocking condition, and
• transmit the blocking condition signal to the electronic control unit;
• wherein the electronic control unit is configured to control the parking brake device such that, in a moving condition of the motor vehicle, at least one gradual actuation of the parking brake device is reduced or stopped when the blocking condition signal is generated,
• wherein the gradual actuation of the parking brake device includes applying a gradually increasing or decreasing braking force generated by one or more spring brake actuators or cylinders resulting in a defined deceleration of the motor vehicle,
• wherein the electronic control unit is configured to control the parking brake device in response to an anti-blocking operation of the service brake device to reduce or stop the gradual actuation of the parking brake device while the electronic control unit is further configured to activate at least one automatic parking brake device blending function together with the service brake device,
• the wheel-blocking detection device is configured to detect the blocking condition based on at least one direct request provided by at least one sub-system of the motor vehicle,
• wherein the sub-systems of the motor vehicle comprise at least one of a suspension system, an air spring system and anti-skid control system and systems of the powertrain,
• wherein the electronic control unit is configured to completely stop and prevent restart of the gradual actuation of the parking brake device in a case in which the blocking condition signal exceeds a blocking signal threshold;
• and
• the electronic control unit is configured to determine whether an actuation amount of the parking brake device during the gradual actuation of the parking brake device is below a gradual actuation threshold, and in a case in which the blocking condition signal continues to be generated, continue to provide the gradual actuation of the parking brake.