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. 28, 2014
Filed:
Aug. 05, 2011
Michael L. Shovels, Jackson, MI (US);
Ryan A. Floyd, Mason, MI (US);
James J. Reynolds, Iii, Ypsilanti, MI (US);
Joseph G. Ralph, Owosso, MI (US);
Michael L. Shovels, Jackson, MI (US);
Ryan A. Floyd, Mason, MI (US);
James J. Reynolds, III, Ypsilanti, MI (US);
Joseph G. Ralph, Owosso, MI (US);
Tenneco Automotive Operating Company Inc., Lake Forest, IL (US);
Abstract
A control system for reducing nitrogen oxides in an engine exhaust of an engine includes an emissions catalyst having an inlet adapted to receive an exhaust from the engine. A reductant tank stores a reductant. An injector is in fluid communication with the reductant tank and is operable to inject the reductant into the exhaust upstream of the catalyst. A reductant pump pumps the reductant from the reductant tank to the injector. A controller determines a target pressure of the reductant based on an engine operating condition and operates the reductant pump based on the target pressure.