Patent ID: 8915069

Claim:
An arrangement for introducing a liquid medium into exhaust gases from a combustion engine, the arrangement comprises: a line configured for exhaust gases to flow through it; an injection chamber which has an upstream end and a downstream end, is bounded in radial directions by a tubular wall and has at its upstream end an inlet for receiving exhaust gases; an injection device for injecting the liquid medium into the injection chamber; a mixing duct which forms part of the line and is situated downstream of the injection chamber in the exhaust gas flow, the injection chamber has an outlet at its downstream end for delivering exhaust gases to the mixing duct; a bypass duct situated in the line upstream of the mixing duct has an outlet via which it is connected to the mixing duct; wherein the inlet of the injection chamber is configured for diverting a portion of the exhaust gases flowing through the line to enter the injection chamber and thereafter to enter the mixing duct via the inlet of the injection chamber, while the bypass duct is configured for leading another portion of the exhaust gases flowing through the line into the mixing duct in order to be mixed there with the diverted exhaust gases; the injection chamber downstream end is comprised of an endwall which demarcates the injection chamber from the mixing duct, the endwall has a periphery; the outlet of the injection chamber is situated at the periphery of the endwall; the outlet of the bypass duct is situated close to the outlet of the injection chamber such that the exhaust gases which flow into the mixing duct via the outlet of the injection chamber collide with the exhaust gases which flow into the mixing duct via the outlet of the bypass duct.