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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.

Patent No.:

US 9140169 B1

PDFFull Text
Date of Patent:
Sep. 22, 2015

Filed:

Nov. 17, 2011

Method for controlling regeneration within an after-treatment component of a compression-ignition engine

Applicants:

Michelangelo Ardanese, Royal Oak, MI (US);

Rebecca J Darr, Milford, MI (US);

Raffaello Ardanese, Troy, MI (US);

Paul Jasinkiewicz, Northville, MI (US);

Min Sun, Troy, MI (US);

Inventors:

Michelangelo Ardanese, Royal Oak, MI (US);

Rebecca J Darr, Milford, MI (US);

Raffaello Ardanese, Troy, MI (US);

Paul Jasinkiewicz, Northville, MI (US);

Min Sun, Troy, MI (US);

Assignee:

GM Global Technology Operations LLC, Detroit, MI (US);

Attorney:

Cantor Colburn LLP

Primary Examiner:

Thomas Denion

Assistant Examiner:

Kelsey Stanek

Int. Cl.
CPC ...
F01N 3/00 (2006.01); F01N 9/00 (2006.01); F02D 41/02 (2006.01); F01N 11/00 (2006.01); F01N 3/027 (2006.01); F02D 41/14 (2006.01);
U.S. Cl.
CPC ...
F01N 9/002 (2013.01); F01N 3/027 (2013.01); F01N 9/007 (2013.01); F01N 11/002 (2013.01); F02D 41/029 (2013.01); F01N 2900/08 (2013.01); F01N 2900/1606 (2013.01); F02D 41/1445 (2013.01); F02D 41/1448 (2013.01); F02D 2041/1433 (2013.01); F02D 2200/0812 (2013.01); Y02T 10/47 (2013.01);
Abstract

A method for controlling regeneration within an after-treatment component of a compression-ignition engine comprises calculating an initial estimate of accumulated particulate matter based on a pressure-based soot accumulation model and a pressure drop index indicative of a decrease in pressure across the component. An adjusted estimate of accumulated particulate matter in the component is calculated based on the initial estimate and a soot prediction error inherent in the soot model. The adjusted estimate is compared to a predetermined threshold associated with the after-treatment component, and a remedial action is initiated when the adjusted estimate of accumulated particulate matter in the after-treatment component exceeds the predetermined threshold. The pressure-based soot accumulation model may be configured to predict soot accumulation in the absence of passive regeneration, and an adjusted kinetic burn model may be used to estimate a quantity of soot disposed through passive regeneration.

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