METHOD FOR MONITORING THE FUNCTIONALITY OF A PRESSURE SENSOR IN A FUEL CELL SYSTEM

摘要

The invention relates to a method for monitoring the functionality of a pressure sensor in a fuel cell system, in particular on cold starting of a motor vehicle driven by the fuel cell system, the fuel cell system comprising at least one fuel cell with lines for fuel and oxidising agent connected thereto, and the pressure sensor being provided for monitoring pressure at a specified location in the lines and/or the fuel cell and producing a measurement signal as a function of the pressure detected thereby. The method comprises the step of varying purposefully the pressure at the specified location, the measurement signal produced during the variation with a specified value, and evaluating the comparison result to assess the functionality of the pressure sensor.