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:
Sep. 28, 2021

Filed:

Apr. 21, 2020
Applicant:

Caterpillar Inc., Peoria, IL (US);

Inventors:

Kevin Lloyd Dea, Morton, IL (US);

James Harris Mutti, Germantown Hills, IL (US);

Thomas Reilly Fenelon, Chillicothe, IL (US);

Assignee:

Caterpillar Inc., Peoria, IL (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 13/08 (2010.01); F01N 3/00 (2006.01); F01N 11/00 (2006.01);
U.S. Cl.
CPC ...
F01N 3/005 (2013.01); F01N 13/08 (2013.01); F01N 11/002 (2013.01); F01N 2410/08 (2013.01); F01N 2560/08 (2013.01); F01N 2900/1406 (2013.01);
Abstract

An exhaust system includes an exhaust pressure sensing system having sensor conduits structured to fluidly connect to an exhaust conduit in an exhaust system and feed exhaust to a differential pressure sensor. The differential pressure sensor produces a pressure signal indicative of a pressure drop across an exhaust aftertreatment element such as an exhaust filter. A plugging-mitigation conduit provides an always-open leakage path to convey condensate in a stream of leaked exhaust between the sensor conduits to prevent formation of deposits that can impact pressure sensing accuracy.


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