Device and Method for Metering Liquid Pollutant-Reducing Media into an Exhaust Gas Duct of an Internal Combustion Engine

A method for metering liquid pollutant-reducing media into an exhaust gas duct of the exhaust gas line of an internal combustion engine, in which a liquid is injected into the exhaust gas duct such that it strikes a baffle body there for extremely fine distribution, wherein the liquid injected into the exhaust gas duct is deflected by the exhaust gas flow such that it is incident essentially perpendicularly on the baffle body, preferably on a, which baffle body project away from the mixer plane at a given angle.

A static mixer for the exhaust system of a motor vehicle operated with an internal combustion engine, with a plurality of flow guide elements which are tilted by a given angle against the mixer plane, wherein the flow guide elements are formed by single-blade guide vane plates which have essentially the same extension direction and which project away from the mixer plane.

A method of adding a reactant to a stream of exhaust gases of an internal combustion engine, routed to a catalytic converter, comprising:

• directing said exhaust gases substantially perpendicularly against at least one planar, baffle surface disposed in the path of said exhaust gas stream;
• and
• injecting said reactant into said stream of said exhaust gases to cause said reactant to become entrained in said exhaust gases and atomized upon striking said baffle surface.

An assembly for adding a reactant to a stream of exhaust gases of an internal combustion engine, routed to a catalytic convertor, comprising:

• means for directing said exhaust gases substantially perpendicularly against at least one planar, baffle surface disposed in the path of said exhaust gas stream;
• and
• means for injecting said reactant into said exhaust gas stream to cause said reactant to become entrained in said exhaust gases and atomized upon striking said baffle surface.