Fuel cell system operating method for motor vehicle, involves adjusting difference between pressure of fuel in anode supply channel and pressure of oxidizing agent in cathode supply channel depending on concentration of fuel

摘要

The method involves supplying an oxidizing agent e.g. oxygen, of a cathode of a fuel cell unit via a cathode supply channel, and supplying fuel e.g. hydrogen, of an anode of the fuel cell unit via an anode supply channel. Concentration of the fuel in the anode supply channel is determined by a concentration determination unit. Difference between pressure of the fuel in the anode supply channel and pressure of the oxidizing agent in the cathode supply channel is adjusted by a pressure adjusting unit depending on the concentration of the fuel in the anode supply channel.