The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Aug. 06, 2002

Filed:

Jul. 13, 2000
Applicant:
Inventors:

Lifeng Xu, Farmington Hills, MI (US);

Ching-Hsong George Wu, Farmington Hills, MI (US);

Robert Henry Hammerle, Franklin, MI (US);

Assignee:

Ford Global Technologies, Inc., Dearborn, MI (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01N 3/00 ;
U.S. Cl.
CPC ...
F01N 3/00 ;
Abstract

A system and method for controlling reductant injection upstream of a selective reduction catalyst (SCR) to overcome NO inhibiting effects by injecting reductant in an amount proportional to engine out NO concentration when the NO concentration is above a predetermined level and injecting predetermined amounts of reductant into the SCR catalyst when engine out NO concentration is below the predetermined level such as when the engine is idling or decelerating.


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Xu, Lifeng. (2002). Method and system for nox reduction (U.S. Patent No. 6427439). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6427439

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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