Electronically controllable pneumatic brake system in a utility vehicle and method for electronically controlling a pneumatic brake system in a utility vehicle

An electronically controllable pneumatic brake system in a vehicle, the brake system comprising:

• wheel brakes for braking respective wheels of the vehicle, wherein wheel brakes of at least one vehicle axle include spring-loaded cylinders for implementing a pneumatic parking brake in a parking brake braking circuit of the vehicle,
• an electronically controllable monostable bypass valve, wherein the monostable bypass valve is disposed between a manually operated parking brake valve and the spring-loaded cylinders such that the monostable bypass valve:
• controls, in a first switching position, a bypass control pressure based on an actuation pressure produced by the parking brake valve to implement a manually specified parking brake force, wherein a maximum actuation pressure corresponds to a reservoir pressure of a reservoir pressure medium in a parking brake pressure medium reservoir supplying the parking brake braking circuit, and
• controls, in a second switching position, a bypass control pressure depending on a venting pressure prevailing in a bypass vent connection to implement an electrically specified parking brake force,
• wherein a parking brake braking pressure controlled at the spring-loaded cylinder can be set depending on the respective bypass control pressure, and
• wherein the monostable bypass valve automatically changes over to the first switching position without electrical actuation.