Method for controlling a brake system of a vehicle with an electronically rgulated rear-axle brake circuit and an pneumatically controlled front-axle brake circuit

A brake system device, which is actuated by a pressure medium, and which is in a vehicle that includes at least two axles, comprising:

• a foot brake valve or a foot brake module that pneumatically generates brake pressures, via a pneumatic brake circuit, for wheel brakes of a front axle in response to an actuation by the driver, wherein the pneumatic brake circuit includes no brake pressure regulation based on a pressure sensor or electronic control;
• and
• at least one pressure regulating module, which in response to brake demand signals from the foot brake valve or from the foot brake module electronically regulates, via an electrically regulated brake circuit, brake pressures for wheel brakes on at least one rear axle axle in terms of a brake pressure regulation in order to adjust an actual brake pressure to a desired brake pressure;
• wherein the pneumatic brake circuit and the electrically regulated brake circuit are coupled by controlling the electrically regulated brake circuit of the at least one rear axle by electric signals that are allocated to the front axle and are derived from the brake pressure or from the braking effect on the front axle.

A vehicle, comprising:

• a brake system device, which is actuated by a pressure medium, and which is in a vehicle that includes at least two axles, including:
• a foot brake valve or a foot brake module that pneumatically generates brake pressures, via a pneumatic brake circuit, for wheel brakes of a front axle in response to an actuation by the driver, wherein the pneumatic brake circuit includes no brake pressure regulation based on a pressure sensor or electronic control;
• and
• at least one pressure regulating module, which in response to brake demand signals from the foot brake valve or from the foot brake module electronically regulates, via an electrically regulated brake circuit, brake pressures for wheel brakes on at least one rear axle in terms of a brake pressure regulation to adjust an actual brake pressure to a desired brake pressure;
• coupling the pneumatic brake circuit and the electrically regulated brake circuit by controlling the electrically regulated brake circuit of the at least one rear axle by electric signals that are allocated to the front axle and are derived from the brake pressure or from the braking effect on the front axle.