Axial flow atomization module

An exhaust treatment component for treating an engine exhaust, comprising:

• a housing including an inlet and an outlet;
• and
• a mixing device located within the housing between the inlet and the outlet, the mixing device including:
• a shell communicating with the outlet;
• a decomposition tube having a first end and a second end, the first end extending from the shell and being configured to receive the exhaust from the inlet and being configured to receive a reagent exhaust treatment fluid, and the second end being positioned within the shell;
• and
• a flow reversing device disposed proximate the second end, the flow reversing device configured to direct a mixture of the exhaust and reagent exhaust treatment fluid in predetermined directions into the shell, wherein the flow reversing device reverses a flow direction of the exhaust back towards the first end of the decomposition tube, wherein the flow reversing device includes a plurality of deflecting members for intermixing the exhaust and reagent exhaust treatment fluid, and further wherein the deflecting members are formed as a plurality of vanes, and the vanes are fixed to an inner surface of the flow reversing device.

An exhaust treatment component for treating an engine exhaust, comprising:

• a housing including an inlet and an outlet;
• and
• a mixing device located within the housing between the inlet and the outlet, the mixing device including:
• a shell communicating with the outlet;
• a decomposition tube having a first end and a second end, the first end extending from the shell and being configured to receive the exhaust from the inlet and being configured to receive a reagent exhaust treatment fluid, and the second end being positioned within the shell;
• and
• a flow reversing device disposed proximate the second end, the flow reversing device configured to direct a mixture of the exhaust and reagent exhaust treatment fluid in predetermined directions into the shell, wherein the flow reversing device reverses a flow direction of the exhaust back towards the first end of the decomposition tube, wherein the flow reversing device includes a plurality of deflecting members for intermixing the exhaust and reagent exhaust treatment fluid, and further wherein the deflecting members are formed from a plurality of tabs that protrude from a plurality of cut-outs formed about a circumference of the flow reversing device.

An exhaust treatment component for treating an engine exhaust, comprising:

• a housing including an inlet and an outlet;
• and
• a mixing device located within the housing between the inlet and the outlet, the mixing device including:
• a shell communicating with the outlet;
• a decomposition tube having a first end and a second end, the first end extending from the shell and being configured to receive the exhaust from the inlet and being configured to receive a reagent exhaust treatment fluid, and the second end being positioned within the shell;
• a flow reversing device disposed proximate the second end, the flow reversing device configured to direct a mixture of the exhaust and reagent exhaust treatment fluid in predetermined directions into the shell, wherein the flow reversing device reverses a flow direction of the exhaust back towards the first end of the decomposition tube, wherein the flow reversing device includes a plurality of deflecting members for intermixing the exhaust and reagent exhaust treatment fluid;
• and
• a flow-dispersing cap secured between the second end of the decomposition tube and the flow reversing device, the flow-dispersing cap including a plurality of through-holes formed therein.

An exhaust treatment component for treating an exhaust produced by an engine, comprising:

• a housing;
• an exhaust treatment component substrate positioned within the housing;
• a dosing module for dosing a reagent exhaust treatment fluid into the exhaust, the dosing module secured to the housing and positioned downstream of the first exhaust treatment component substrate;
• and
• a mixing device located within the housing and positioned downstream from the dosing module, the mixing device including:
• a shell;
• a decomposition tube having a first end extending from the shell and directly communicating with the dosing module, and a second end positioned within the shell;
• a flow reversing device disposed proximate the second end, the flow reversing device directing the exhaust and reagent exhaust treatment fluid in predetermined directions into the shell;
• and
• a support plate fixed to an interior surface of the housing upstream from the first end of the decomposition tube, the support plate defining an aperture for receipt of the decomposition tube and a plurality of through-holes for allowing the exhaust to flow therethrough before entering the first end of the decomposition tube,
• wherein a direction of the exhaust flow firstly reverses after entering the first end of the decomposition tube;
• and
• the flow reversing device secondly reverses the direction of the exhaust flow back towards the first end of the decomposition tube.