Robert Boschgmbh

Wolfgang Reeb

Reiner Fellmeth

Andre Bollwerk

Bernd Diebold

Hans-Peter Schemel

A method and a device, respectively, for detecting the amount of wear on the carbon brush drive system of an electrically commutated d.c. motor which is used, for example, in the form of a pump motor in a motor vehicle. The d.c. motor is driven by at least two carbon brushes and includes means for detecting the generative follow-up voltage. The amount of wear on at least one carbon brush is derived from the time behavior of the generative motor voltage and displayed to the driver.

Detection of the amount of wear on a motor drive system

A control drive according to the related art does not have a potentiometer that allows a position of the motor or the driven wheel to be registered. The control drive () according to the invention allows a position of the motor or the driven wheel to be registered using a potentiometer () and a defined home position to be adjusted.

Growing community of inventors

Ottersweier-Hatzenweier, Germany

Wolfgang Reeb