(DE19755814-C1)   NOVELTY - Shortly before transition from first- to second phase operation, fuel-oxidant mixture is dosed with water; and/or fuel is supplied to the multifunction reactor with rising temperature during the first phase; and/or the oxidant mass flowrate is adjusted for sub-stoichiometric conditions.    USE - To assure rapid start up of a hydrocarbon reformer used to supply hydrogen to the fuel cells of a vehicle.    ADVANTAGE - The equipment is brought on line with the most rapid warm-up possible, to minimize duration of the cold start phase, and to get onto the road. Essentially, catalytic combustion of hydrocarbon fuel (or hydrogen) is employed for fast warm-up, the fuel later being reformed with partial oxidation, the multifunction reactor becoming a POX unit (process with partial oxidation of hydrocarbons). Hydrogen produced by reforming is used in fuel cells of the vehicle. The process is further discussed in the text, citing suitable catalysts.    (EP1040079-A1)   NOVELTY - Shortly before transition from first- to second phase operation, fuel-oxidant mixture is dosed with water; and/or fuel is supplied to the multifunction reactor with rising temperature during the first phase; and/or the oxidant mass flowrate is adjusted for sub-stoichiometric conditions.    USE - To assure rapid start up of a hydrocarbon reformer used to supply hydrogen to the fuel cells of a vehicle.    ADVANTAGE - The equipment is brought on line with the most rapid warm-up possible, to minimize duration of the cold start phase, and to get onto the road. Essentially, catalytic combustion of hydrocarbon fuel (or hydrogen) is employed for fast warm-up, the fuel later being reformed with partial oxidation, the multifunction reactor becoming a POX unit (process with partial oxidation of hydrocarbons). Hydrogen produced by reforming is used in fuel cells of the vehicle. The process is further discussed in the text, citing suitable catalysts.    (EP1040079-B1)   NOVELTY - Shortly before transition from first- to second phase operation, fuel-oxidant mixture is dosed with water; and/or fuel is supplied to the multifunction reactor with rising temperature during the first phase; and/or the oxidant mass flowrate is adjusted for sub-stoichiometric conditions.    USE - To assure rapid start up of a hydrocarbon reformer used to supply hydrogen to the fuel cells of a vehicle.    ADVANTAGE - The equipment is brought on line with the most rapid warm-up possible, to minimize duration of the cold start phase, and to get onto the road. Essentially, catalytic combustion of hydrocarbon fuel (or hydrogen) is employed for fast warm-up, the fuel later being reformed with partial oxidation, the multifunction reactor becoming a POX unit (process with partial oxidation of hydrocarbons). Hydrogen produced by reforming is used in fuel cells of the vehicle. The process is further discussed in the text, citing suitable catalysts.