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:
Jan. 29, 2013
Filed:
Dec. 23, 2009
Purna Chander Nalla, Peoria, IL (US);
Amit Jayachandran, Peoria, IL (US);
James Mutti, Germantown Hills, IL (US);
Baoyong Liu, Dunlap, IL (US);
Ethan D. Sanborn, Peoria, IL (US);
Purna Chander Nalla, Peoria, IL (US);
Amit Jayachandran, Peoria, IL (US);
James Mutti, Germantown Hills, IL (US);
Baoyong Liu, Dunlap, IL (US);
Ethan D. Sanborn, Peoria, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A method of introducing reductant to an exhaust stream is disclosed. The method may include ordering a first dosing event, supplying a reductant to a dispensing device in response to ordering the first dosing event, dispensing reductant from the dispensing device into the exhaust stream, and forcing reductant from the dispensing device toward a reductant source, wherein sufficient reductant remains in a pumping device and a fluid passage to keep the pumping device primed.