Gaseous emissions treatment system with enhanced induction heating and method of use
First Claim
1. A gaseous emissions treatment system comprising a gaseous emissions treatment unit for treating gaseous emissions flowing through the unit, a magnetic field generator mounted adjacent the gaseous emissions treatment unit that radiates a varying magnetic field in response to a control signal thereby to inductively heat the gaseous emissions treatment unit, at least a part of the magnetic field generator located between the gaseous emissions treatment unit and a magnetic field modifying member, the modifying member acting to concentrate the radiated varying magnetic field at the gaseous emissions treatment unit.
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Accused Products
Abstract
A gaseous emissions treatment system includes an emissions control substrate having a plurality of passages to facilitate a catalytic reaction in an exhaust gas from an internal combustion engine. A magnetic field generator responds to a control signal by generating a varying magnetic field to inductively heat the emission control substrate. A magnetic field concentrator is configured and positioned to increase the radiated varying magnetic field in a region on the same side of the magnetic field concentrator as the emissions control substrate. The magnetic field concentrator also acts as a shield to reduce the radiated varying magnetic field in a region on the distal side of the magnetic field concentrator from the emissions control substrate.
4 Citations
26 Claims
- 1. A gaseous emissions treatment system comprising a gaseous emissions treatment unit for treating gaseous emissions flowing through the unit, a magnetic field generator mounted adjacent the gaseous emissions treatment unit that radiates a varying magnetic field in response to a control signal thereby to inductively heat the gaseous emissions treatment unit, at least a part of the magnetic field generator located between the gaseous emissions treatment unit and a magnetic field modifying member, the modifying member acting to concentrate the radiated varying magnetic field at the gaseous emissions treatment unit.
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26. A method of treating gaseous emissions comprising flowing gaseous emissions to be treated through a gaseous emissions treatment unit, radiating a varying magnetic field from a magnetic field generator mounted adjacent the gaseous emissions treatment unit thereby to inductively heat the gaseous emissions treatment unit in response to a control signal, and using a magnetic field modifying member located on a side of the magnetic field generator remote from the gaseous emissions treatment unit to concentrate the radiated varying magnetic field at the gaseous emissions treatment unit.
Specification