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.:
Date of Patent:
Nov. 16, 2021
Filed:
Feb. 25, 2020
Applicant:
Caterpillar Inc., Peoria, IL (US);
Inventor:
Keith D. Hogan, Peoria Heights, IL (US);
Assignee:
Caterpillar Inc., Peoria, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/20 (2006.01);
U.S. Cl.
CPC ...
F01N 3/208 (2013.01); F01N 3/2066 (2013.01); F01N 2610/02 (2013.01); F01N 2610/10 (2013.01); F01N 2610/1406 (2013.01); F01N 2610/1453 (2013.01); F01N 2900/12 (2013.01); F01N 2900/1404 (2013.01); F01N 2900/1811 (2013.01);
Abstract
An exhaust system for an engine includes an exhaust conduit, a selective catalytic reduction (SCR) device in the exhaust conduit, and a diesel emission fluid (DEF) system. The diesel emission fluid system includes a DEF delivery controller structured to receive a condition signal indicative of a DEF deposition risk condition in the exhaust system, and to command an increased heat energy output of a preheater to preheat DEF to be admitted into the exhaust conduit, such that a temperature of the DEF is increased to a deposition-mitigation temperature. Related methodology and control logic is also disclosed.