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US 2011/0030344 A1Published application
Radiant heating systems and methods for catalysts of exhaust treatment systems
AssigneeGM Global Technology Operations LLC
InventorsEugene V. Gonze, Halim G. Santoso, Brian Spohn, Bryan Nathaniel Roos
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Abstract
An exhaust treatment system comprises M three-way catalysts and N electrically heated catalysts (EHCs). The M three-way catalysts are arranged to receive exhaust gas output by an engine of a hybrid vehicle. M is an integer greater than one. The N EHCs are arranged to receive the exhaust gas and provide radiant heat to the M three-way catalysts when the N EHCs are powered. N is an integer greater than one.
Claims20
An exhaust treatment system comprising:
- M three-way catalysts that are arranged to receive exhaust gas output by an engine of a hybrid vehicle, wherein M is an integer greater than one;
- N electrically heated catalysts (EHCs) that are arranged to receive said exhaust gas and that provide radiant heat to said M three-way catalysts when said N EHCs are powered, wherein N is an integer greater than one.
An exhaust treatment method comprising:
- implementing M three-way catalysts to receive exhaust gas output by an engine of a hybrid vehicle, wherein M is an integer greater than one;
- implementing N electrically heated catalysts (EHCs) to receive said exhaust gas, wherein N is an integer greater than one;
- and
- providing radiant heat to said M three-way catalysts using said N EHCs.
1 more element
Dependencies are inferred from the claim text.