Patent ID: 7537292

Claim:
A method of controlling a braking pressure at a rear wheel brake of a single-track vehicle using a brake system which comprises only one wheel brake circuit with a pressure modulator for adjusting a braking pressure at a front wheel brake, only one wheel brake circuit with a pressure modulator for adjusting the braking pressure at the rear wheel brake, at least one control circuit for activating both pressure modulators and a control unit; wherein a nominal rear wheel braking pressure is determined as a function of an actual front wheel braking pressure detected as a reference input variable in the single wheel brake circuit for the front wheel by means of a pressure sensor, on the basis of an ideal brake force distribution characteristic stored in the control unit, and is adjusted by the pressure modulator in the wheel brake circuit for the rear wheel, taking into account an actual rear wheel braking pressure detected as a control variable in the single wheel brake circuit for the rear wheel by means of a pressure sensor, such that the actual rear wheel braking pressure is reduced according to the ideal brake force distribution characteristic until it fits the determined nominal rear wheel braking pressure, wherein the brake force distribution characteristic stored in the control unit comprises two ideal brake force distribution curves, of which the one curve is representative of an unladen vehicle while the other curve is representative of a vehicle under maximum load, and wherein a counter representative of the actual loading of the vehicle is produced, which, taking account of the two ideal brake force distribution curves, serves in calculating a pressure calculation variable for the actual front wheel braking pressure detected in the wheel brake circuit for the front wheel, which variable lies, in accordance with the actual loading of the vehicle, between or on one of the two ideal brake force distribution curves, wherein the nominal rear wheel braking pressure is determined as a function of the calculated pressure calculation variable.