Exhaust gas mixer, system, and method of using
AssigneeEmissol, LLC
InventorsMansour Masoudi, Sahm Noorfeshan, Nikolai Alex Poliakov
Life of this patent
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Abstract
A segmented, heated urea mixer and an exhaust system to control NOx emission from combustion engines comprising a plurality of elements, at least one mixing element independently heatable by an external power source to a temperature above a temperature of another element. A method of using the exhaust gas mixer and an exhaust gas mixer system further comprising a controller is also disclosed.
Claims21
An exhaust gas mixer, comprising a plurality of mixing elements disposable within a conduit having a flow path between a mixer inlet through which an exhaust gas and a reductant flow through the conduit into the exhaust gas mixer, and a mixer outlet through which the exhaust gas and the reductant flow out of the exhaust gas mixer, at least one of the mixing elements being heatable by an external power source;
- the plurality of mixing elements arranged within the conduit such that a total area of the conduit determined perpendicular to the flow path having a direct linear flow path from the mixer inlet to the mixer outlet is less than about 10% of the total area of the conduit.
An exhaust gas treatment system comprising an exhaust gas mixer comprising a plurality of mixing elements disposable within a conduit having a flow path between a mixer inlet through which an exhaust gas and a reductant flow through the conduit into the exhaust gas mixer, and a mixer outlet through which the exhaust gas and the reductant flow out of the exhaust gas mixer, at least one of the mixing elements being heatable by an external power source;
- the plurality of mixing elements arranged within the conduit such that a total area of the conduit determined perpendicular to the flow path having a direct linear flow path from the mixer inlet to the mixer outlet is less than about 10% of the total area of the conduit, and one or more exhaust gas heaters comprising a plurality of heating elements disposed within the flow path of the conduit, wherein a maximum operational output of energy from the mixer is less than a maximum operational output of energy from the one or more exhaust gas heaters,
- wherein one or more exhaust gas heaters is arranged before the inlet of mixer, after the outlet of the mixer along the flow path, or a combination thereof.
Dependencies are inferred from the claim text.