METHOD AND DEVICE FOR THE CALIBRATION OR DIAGNOSIS OF A MOTOR VEHICLE BRAKE SYSTEM HAVING A CYCLICALLY OPERATED PUMP

摘要

A method for the calibration or diagnosis of a motor vehicle brake system having a cyclically operated pump. At least one parameter (URPOff), representing the electromotor force of the reference pump, is repeatedly ascertained during operation of a reference pump under defined guidelines. A statistical characteristic variable (<URPOff>) is derived from the values of parameter (URPOff) ascertained for the reference pump. Parameter (UBPOff) is ascertained under a corresponding guideline during operation of an operating pump. Corresponding statistical characteristic variable (<UBPOff>) is derived from the values of parameter (UBPOff) ascertained for the operating pump. At least one ratio number is calculated as a measure of the deviation of the operating behavior of the operating pump from the operating behavior of the reference pump from the characteristic variable (<URPOff>) calculated for the reference pump and the characteristic variable (<UBPOff>) calculated for the operating pump.