Daimler Chrysler Ag

Wolfgang Weiss

Stefan Schroedl

Thorsten Engelhardt

Christof Nitsche

Richard Fosmoe

A method for on-board real-time diagnostics of a mobile technical system using an adaptive technique to approximate stationary characteristic curves resulting from a workshop test. This adaptive technique uses observed non-stationary normal driving data to eliminate confounding variables.

Method for simplified real-time diagnoses using adaptive modeling

In a method of monitoring a fuel cell unit, at least one pair of measured values, including a measured current value and a measured voltage value (I, U) are determined at the outputs of the fuel cell unit. The measured voltage value (U) is compared with a limit value (P), which is a function of the measured current value (I) by way of a limit characteristic polarization curve. It is concluded that the condition of the fuel cell unit is faulty when the measured voltage value (U) or a function of the measured voltage value is smaller than or equal to a predefined threshold value.

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Gold River, CA, United States of America

Wolfgang Weiss