Tenneco Gmbh

Other

Heinrich Gillet Gmbh (tenneco)

Stefan Kohrs

Joachim Gehrlein

Eric A Hein

Attila Kovacs

Sascha Haverkamp

Andreas Lang

Günter Palmer

Balthasar Hipp

Markus Jost

Manfred Doll

A mixer assembly comprises a tubular housing including an exhaust gas inlet, an exhaust gas outlet, and a reductant inlet on a side of the tubular housing. An upstream mixing element is positioned within the tubular housing upstream from the reductant inlet. A downstream mixing element is positioned within the tubular housing downstream from the reductant inlet and the upstream mixing element. The upstream and downstream mixing elements at least partially define a reductant receiving mixing chamber in which the injected reductant and exhaust gas mix. A divider is positioned within the tubular housing downstream from the upstream mixing element to split the exhaust into two divided flow streams prior to exiting through the exhaust gas outlet.

Mixer assembly

A mixer comprises a tubular housing defining a longitudinal axis along which exhaust gas flows. Injected reductant flows along an injection axis that extends at a non-parallel angle to the longitudinal axis. A first flow guide element extends across and blocks a portion of the tubular housing and includes a first aperture extending therethrough. The first flow guide element is positioned upstream from the reductant inlet such that exhaust gas flowing through the first aperture is impinged by the reductant. A second flow guide element is positioned downstream from the first flow guide element and fixed to the first flow guide element to define a mixing chamber in which injected reductant and exhaust gas mix. An intermediate wall is integrally formed with one of the first and second flow guide elements. The other of the first and second flow guide elements is fixed to the intermediate wall.

A mixer assembly for mixing an injected reductant with an exhaust gas comprises a tubular housing including a reductant inlet, an exhaust gas inlet and an exhaust gas outlet. The reductant inlet is positioned on a first side of the tubular housing and oriented to direct injected reductant along an injection access that extends transversely to a longitudinal axis. A first flow guide element is shaped as a sheet including a first aperture extending therethrough as well as a surface facing upstream. Exhaust gas flowing through the first aperture is impinged by the injected redundant. A second flow guide element is shaped as a sheet, positioned downstream from the first flow guide element and fixed to the first flow guide element to define a mixing chamber between the first flow guide element and the second flow guide element in which the injected redundant and the exhaust gas mix.

Mixing device

A mixer assembly comprises a tubular housing including a reductant inlet, an exhaust gas inlet and an exhaust gas outlet. The tubular housing defines a longitudinal axis along which exhaust enters the housing. The reductant inlet is positioned on a first side of the tubular housing. An upstream element covers approximately one-half of the cross sectional area of the enhaust gas inlet and is positioned upstream of the reductant inlet. An upstream surface of the upstream mixing element directs exhaust gas flow transversly toward the reductant inlet. A downstream mixing element along with the upstream mixing element at least partially defines a reductant receiving duct in which injected reductant and exhaust gas mix.

The invention relates to a method for mixing an exhaust gas flow with a fluid in an exhaust gas pipeof an exhaust gas system, in which the fluid is injected by means of an injection deviceinto the exhaust gas pipe. The exhaust gas flow is guided in the exhaust gas pipein the area of the injection devicein a direction of flow S parallel to the exhaust gas pipe. The fluid is injected directly onto a deflection elementwhich is arranged in the exhaust gas pipein a central direction of injection E which deviates from the direction of flow S by an angle se, wherein by means of at least one sheet metal partwhich is provided on the deflection elementand which is raised at least partially at an angle sv with reference to the direction of flow S, the exhaust gas flow is diverted with reference to the direction of flow S from its direction of flow S into a central direction of distribution V. Before and after it impacts the deflection element, the fluid is carried along at least partially by the diverted part of the exhaust gas flow into the direction of distribution V and is diverted into the direction of distribution V by the raised sheet metal part

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Neustadt/Weinstrasse, Germany

Stefan Kohrs