Patent ID: 7735315

Claim:
A device for producing an operating medium for delivery to an exhaust gas line of an internal combustion engine for posttreatment of exhaust gas in the exhaust gas line, the device comprising: a catalytic converter having an inlet and an outlet for connection to the exhaust gas line; a first chamber connected to the inlet of the catalytic converter; means for supplying initial product to the first chamber; and means for supplying heated air to the first chamber to rapidly evaporate the initial product supplied to the first chamber, said means for supplying heated air to the first chamber including a second chamber having an outlet discharging into the first chamber, an air supply line discharging air into the second chamber, means for supplying evaporated initial product to the second chamber including a preheating element disposed within the second chamber for evaporating the initial product supplied to the second chamber, and means located in the first chamber for igniting the evaporated initial product supplied to the second chamber in order to heat the air supplied to the second chamber.