Patent ID: 9248404
Filing Date: 2016-02-02
CPC Classification: B01D,B01F,F01N,Y02A

Claim Text:
1. A motor vehicle exhaust line of the type comprising: a hot pipe for exhaust gases; a cold pipe for the exhaust gases; a mechanical decoupling element connecting a downstream end of the hot pipe to an upstream end of the cold pipe; a nitrogen oxide treatment device; an injector intended to inject a reagent into, or to produce a reagent in the exhaust line upstream of the nitrogen oxide treatment device; a mixer intended to mix the exhaust gases and the reagent injected or produced by the injector, said mixer being positioned upstream of the nitrogen oxide treatment device, the nitrogen oxide treatment device being positioned in the cold pipe downstream from the mechanical decoupling element, and the injector and the mixer forming an assembly connected directly to the mechanical decoupling element; and wherein the mixer includes an injection portion positioned between an upstream face and a downstream face respectively defined by an exhaust gas inlet into and an exhaust gas outlet outside the mixer, the injection portion comprising an exhaust gas duct extending from the upstream face to the downstream face, the exhaust gas duct having a central line having a set length between the upstream and downstream faces, the injector including a reagent injector mounted on the injection portion and capable of injecting or producing a reagent in the injection portion, the injection portion comprising at least one first cup positioned inside the exhaust gas duct such that a mean path of the exhaust gases in the exhaust gas duct is at least 20% greater relative to the set length.