DEVICE FOR DOSING A REDUCING AGENT

摘要

The invention relates to a device for dosing a reducing agent, especially a urea or a urea-water solution, comprising means for feeding the reducing agent into a catalytic converter (30) provided for removing nitrogen oxides from the exhaust gases, in particular, of a diesel engine. According to the invention, the means comprise a dosing pump (4, 4a; 80, 4a), and an orifice (8a, 71), through which the feeding can be effected, is connected after said dosing pump. No additional elements for controlling the feeding of the reducing agent are arranged between the dosing pump and the orifice. This configuration results in the provision of a compact design, and the use of components that are susceptible to wear is largely eliminated.