Title:
REDUCTANT INJECTION CONTROL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2013/022587
Kind Code:
A3
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.
Inventors:
SHOVELS MICHAEL L (US)
FLOYD RYAN A (US)
REYNOLDS III JAMES J (US)
RALPH JOSEPH G (US)
FLOYD RYAN A (US)
REYNOLDS III JAMES J (US)
RALPH JOSEPH G (US)
Application Number:
PCT/US2012/047337
Publication Date:
April 04, 2013
Filing Date:
July 19, 2012
Export Citation:
Assignee:
TENNECO AUTOMOTIVE OPERATING (US)
SHOVELS MICHAEL L (US)
FLOYD RYAN A (US)
REYNOLDS III JAMES J (US)
RALPH JOSEPH G (US)
SHOVELS MICHAEL L (US)
FLOYD RYAN A (US)
REYNOLDS III JAMES J (US)
RALPH JOSEPH G (US)
International Classes:
F01N3/18; B01D53/94; F01N9/00
Foreign References:
| US7726118B2 | 2010-06-01 | |||
| US20090113877A1 | 2009-05-07 | |||
| US20110083424A1 | 2011-04-14 | |||
| US20110107742A1 | 2011-05-12 |
Attorney, Agent or Firm:
WALKER, Donald G. et al. (DICKEY & PIERCE P.L.C.,P.O. Box 82, Bloomfield Hills Michigan, US)
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