Method and device for dosage of a reducing agent for the removal of nitrogen oxides from exhaust gases

摘要

A method and an apparatus for metering a reducing agent are proposed, in which the reducing agent is delivered, via a line (12) and a final control element that regulates the metering, in particular a metering valve, to a catalytic converter assembly (30) for removing nitrogen oxides from the exhaust gases, in particular of a Diesel engine; a pressure drop in the line (12) dictated especially by gas inclusions is detected, and the line (12) is ventilated via the final control element.