Mtu Friedrichshafen Gmbh

Tobias Weiss

Michael Hönl

Matthias Schweitzer

A method for the operational test measurement of a lambda probe, particularly for the purpose of calibrating and/or determining the status of the lambda probe, wherein pure air is circulated around a probe head of the lambda probe is disclosed. The method has the following steps:, &#x2014;insertion of the lambda probe into a flow receptacle which is separate from an engine construction, in such a manner that an air stream (L) can be circulated around the probe head; generation of an air stream (L) in the flow receptacle; evaluation of probe measurement signals (S), wherein a calibration value is obtained and/or a heating current of the lambda probe is evaluated. A device for carrying out the method, as well as a system, is also disclosed herein.

Method for an operational test measurement of a lambda probe, and device for carrying out method

A method for automatic lambda control of an internal combustion engine, in which, upon detection of a predetermined operating state of the internal combustion engine, a calibration factor (KAL) is determined and in which, during the operation of the internal combustion engine, a lambda measuring signal (iP) is corrected by the calibration factor (KAL) and is set as the actual lambda value (Lam(IST)) for the automatic lambda control of the internal combustion engine. The predetermined operating state is recognized when an engine coastdown is initiated.

Growing community of inventors

Herbertingen, Germany

Tobias Weiss