METERING DEVICE FOR POLLUTION REDUCTION IN EXHAUST GASES

摘要

The invention relates to a metering device (110) for introducing a pollution-reducing medium (122) into an exhaust gas flowing through a flow tube (116), in particular an exhaust pipe of an internal combustion engine. The invention can be used in particular to introduce a reducing agent and/or a reducing agent precursor into the exhaust gas. The metering device (110) comprises a metering module (112) for metering the pollution-reducing medium (122) and a nozzle (114) connecting the metering module (112) and the flow tube (116). The metering device (110) comprises a flushing device (134) provided for producing a secondary stream (142) of an auxiliary fluid (154) that flows through the nozzle (114) in the direction of the flow tube (116), at least in areas.