Apparatus and method for gaseous emissions treatment with directed induction heating
First Claim
1. An assembly for treating gaseous emissions comprising a substrate body having a plurality of cells for the passage of emissions gas, respective lengths of metal wire located in each of a first set of the plurality of cells, and an induction heating coil mounted adjacent the substrate body for generating a varying electromagnetic field, thereby inductively to heat the lengths of wire and thereby to heat the substrate body, wherein the wires are distributed non-uniformly through the substrate body to obtain a desired inductance heating pattern at the substrate body.
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Abstract
An assembly for treating gaseous emissions includes a substrate body having cells for the passages of emissions gas. Lengths of metal wire are located in selected ones of the cells and an induction heating coil is mounted adjacent the substrate body for generating a varying electromagnetic field. In this way the metal wires are heated, resulting in heating of the substrate body and heating of exhaust gas flowing in the cells. The metal wires are distributed non-uniformly through the substrate body to obtain a desired heating pattern.
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Citations
20 Claims
- 1. An assembly for treating gaseous emissions comprising a substrate body having a plurality of cells for the passage of emissions gas, respective lengths of metal wire located in each of a first set of the plurality of cells, and an induction heating coil mounted adjacent the substrate body for generating a varying electromagnetic field, thereby inductively to heat the lengths of wire and thereby to heat the substrate body, wherein the wires are distributed non-uniformly through the substrate body to obtain a desired inductance heating pattern at the substrate body.
- 16. A method of treating gaseous emissions using an assembly having an induction heating coil mounted adjacent a substrate body, the substrate body having a plurality of cells for the passages of emissions gas and respective lengths of metal wire located in each of a first set of the plurality of cells, the location of the wires distributed non-uniformly through the substrate body, the method comprising generating a varying electromagnetic field at the coil thereby to cause induction heating of the lengths of wire with heat from the heated lengths of wire being transferred to the substrate body and the gaseous emissions passing along the cells, the location of the non-uniform distribution of wires being such as to obtain a desired heating pattern in the substrate body.
Specification