| 20090130616 | METHOD FOR DETERMINING AN AIR RATIO IN A BURNER FOR A FUEL CELL HEATER, A FUEL CELL HEATER - A method for determining an air ratio in a burner for a fuel cell heater having an ionization sensor in the range of the flame and which is fed with two different gases for combustion, one of said gases being obtained from a gas treatment, wherein a measurement signal of the ionization sensor is converted into an actual value for the air ratio depending on one or more variable of states of the gas treatment. | 05-21-2009 |
