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:
May. 30, 2017
Filed:
Sep. 22, 2015
Applicant:
Caterpillar Inc., Peoria, IL (US);
Assignee:
Caterpillar Inc., Peoria, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01N 3/00 (2006.01); F01N 3/20 (2006.01); B01D 53/94 (2006.01);
U.S. Cl.
CPC ...
F01N 3/208 (2013.01); B01D 53/9459 (2013.01); B01D 53/9495 (2013.01); F01N 2610/02 (2013.01); F01N 2610/144 (2013.01); F01N 2610/1406 (2013.01); F01N 2610/146 (2013.01); F01N 2610/1493 (2013.01);
Abstract
An emission reduction system is provided. The emission reduction system includes a tank configured to store a reductant. The emission reduction system also includes a pump configured to draw the reductant from the tank and supply the reductant to an exhaust system. The pump is further configured to draw in air from an ambient air source. The emission reduction system further includes a control assembly disposed in fluid communication with the ambient air source and the pump. The control assembly is configured to selectively allow the pump to access the ambient air source for purging the pump.