Patent ID: 8301331
Filing Date: 2012-10-30
Classification: B60T

Abstract:
1. A method for the calibration or diagnosis of a motor vehicle brake system having an operating pump operating in a pulsed fashion during which a pulse period for applying voltage to the operating pump and an interpulse period for not applying voltage to the operating pump are alternated, the method comprising: repeatedly determining, by a reference processor, during operation of a reference pump separate from the motor vehicle, under defined stipulations, at least a voltage (U deriving, by the reference processor, a statistical characteristic variable ( determining, by an operating processor, during operation of the operating pump in the motor vehicle, a voltage (U deriving, by the operating processor, a corresponding statistical characteristic variable ( calculating, by the operating processor, at least one ratio 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 ( determining, by the operating processor, if the operating pump in the motor vehicle is defective by comparing the at least one ratio to a tolerance range.