Apparatus, system, and method for exhaust aftertreatment...

Details Apparatus, system, and method for exhaust aftertreatment... Apparatus, system, and method for exhaust aftertreatment...

2006-12-29

2010-10-12

Denion, Thomas E (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

C060S273000, C060S285000, C060S287000, C060S299000

Reexamination Certificate

active

07810316

ABSTRACT:
An apparatus, system, and method are disclosed for enhancing the efficiency of an exhaust aftertreatment application. The method may include determining the current operating conditions of the application, the optimal operating conditions of a target component, and the performance criteria of a conditioning component relative to the optimal operating conditions. The method may include determining an optimal fraction of an exhaust flow to pass through the conditioning component to achieve the optimal operating conditions of the target component. The method may further include manipulating a bypass valve position based on the optimal fraction of exhaust flow to pass through the conditioning component. The target component may be a selective catalyst reduction (SCR) component that operates optimally at a designed NO2/NOxmole ratio. The conditioning component may be a diesel oxidation catalyst (DOC) that affects the NO2/NOxmole ratio. A method is thereby provided to operate an exhaust aftertreatment application more efficiently relative to an application without the invention.

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PCT International Search and Written Opinion, May 16, 2008.
PCT/US2007/089220, PCT International Preliminary Report on Patentability, Sep. 4, 2009.

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