A reactor is located in a gas gathering chamber through which exhaust gas in an exhaust system flows curvedly. An addition agent is sprayed against the reactor from upstream of the chamber to facilitate gasification through heat receiving. Rectification vanes are arrayed in a direction bisecting an angle formed by inflow and outflow directions of the exhaust gas and a support for supporting opposite ends of each of the vanes. Opposite ends of the vanes are inserted into slots on slanting sides of opposite side walls in the support to provide installed state. The vanes in the installed state are adapted to provide mounted postures along the flow of the exhaust gas.

Disclosed is a reactor 8 located in a gas gathering chamber 7A (flow change portion) through which exhaust gas 1 in an exhaust system flows curvedly; urea water 10 (addition agent) sprayed from upstream is impinged against the reactor 8 to facilitate gasification through heat receiving. Provided are rectification vanes 12 arrayed in a direction substantially bisecting an angle formed by inflow and outflow directions (see arrows x and y) of the exhaust gas 1 and a support 13 supporting the vanes 12 and received in the gas gathering chamber 7A. The vanes 12 are supported by the support 13 in a spaced-apart relationship from a flow passage wall of the gas gathering chamber 7A.

A vehicle exhaust system includes a conduit defining an exhaust gas flow path extending along a center axis, and wherein the conduit includes a doser opening. An exhaust gas aftertreatment component is positioned downstream of the conduit and at least one doser is configured to inject fluid into the conduit through the doser opening. A heating element pre-heats the fluid prior to mixing with exhaust gas. A perforated pipe is positioned within the exhaust gas flow path to surround the fluid injected by the doser.

An internal combustion engine exhaust system mixer device includes a bottom element (1) includes a downstream rear side (22) and a front side (44). The bottom element has a reactant introduction opening (31), open to a reactant receiving volume (46), and expands therefrom radially from the reactant introduction opening toward the front side. Exhaust gas passage ducts (58), arranged following one another in the circumferential direction about the opening axis (A), open to the reactant receiving volume. A swirl generation element (20) is connected to the bottom element and encloses the opening axis. A mixing volume (64) adjoins the reactant receiving volume in the direction of the opening axis and is formed in the swirl generation element. A plurality of exhaust gas passage openings (66), following one another in the circumferential direction, about the opening axis are provided in the swirl generation element.

A mixer device for an exhaust system of an internal combustion engine includes a tubular carrier (30) enclosing a mixer longitudinal axis (A) in a ring shape configuration and a mixer insert (28) carried at the carrier (30). The mixer insert (28) has a plurality of connection attachments (52, 54, 56) located at spaced locations from one another in relation to the mixer longitudinal axis (A) radially on the outside. The carrier (30) has a plurality of connection recesses (60, 62) for the permanent connection of the mixer insert (28) to the carrier (30).

An element for use in stationary material mixing and distribution. The element has an element longitudinal axis and a web positioned along the element longitudinal axis. A ramp is connected to a first end of the web and oriented diagonally thereto. A diverter is positioned on a first side of the web and a diverter is positioned on a second side of the web. First and second ears are bent respectively in upward and downward directions relative to the longitudinal axis. A rectangular member whose plane of orientation is substantially perpendicular to the web is provided as well as a third ear in the plane of orientation of the rectangular member extending from the rectangular member to the web.

A mixing device includes a mixing cavity having a partially open wall and a closed wall. In certain examples, the partially open wall and the closed wall are two separately formed pieces. A downstream side of the mixing device is shaped so as to define a helicoidal groove for circumferentially guiding gas from an outlet opening of the mixing cavity in a downstream direction. An injector sprays reactant into the mixing cavity.

An exhaust system for an internal combustion engine, especially in a vehicle, includes an exhaust gas flow duct (14), a reactant release device (20) for the release of reactant (R) into the exhaust gas flow duct (14) and a catalytic converter device (16) downstream of the reactant release device (20). At least one part of a component surface is provided by a hydrophilic material (34) of at least one exhaust gas-carrying component (12, 22) positioned in the reactant flow path or/and defining this reactant flow path, or/and at least one part of the component surface is provided by a hydrophobic material (40) of at least one exhaust gas-carrying component (12, 18, 22) positioned in the reactant flow path.

A mixer assembly for an exhaust aftertreatment system includes a first support ring. The first support ring defines a plurality of first slots angularly spaced apart from each other. A second support ring spaced apart from the first support ring defines a plurality of second slots angularly spaced apart from each other. A plurality of blades extends between the first support ring and the second support ring. Each of the plurality of blades is coupled to each of the first support ring and the second support ring. Each of the plurality of blades includes a base. The base includes a first connecting portion engaged with a corresponding first slot from the plurality of first slots and a second connecting portion engaged with a corresponding second slot from the plurality of second slots. At least one tab extends outwardly from the base at an angle relative to the base.

A vehicle exhaust system includes an exhaust gas aftertreatment component and an exhaust duct positioned downstream of the exhaust gas aftertreatment component. The exhaust duct defines an internal cavity and a mixer is positioned within the internal cavity. A sensor is configured to sample exhaust gas downstream of the mixer.