WO2012148637A3 - Reductant quality sensor - Google Patents

Reductant quality sensor Download PDF

Info

Publication number
WO2012148637A3
WO2012148637A3 PCT/US2012/031961 US2012031961W WO2012148637A3 WO 2012148637 A3 WO2012148637 A3 WO 2012148637A3 US 2012031961 W US2012031961 W US 2012031961W WO 2012148637 A3 WO2012148637 A3 WO 2012148637A3
Authority
WO
WIPO (PCT)
Prior art keywords
reductant
quality
signal
exhaust
injector
Prior art date
Application number
PCT/US2012/031961
Other languages
French (fr)
Other versions
WO2012148637A2 (en
Inventor
Christopher J. Kleinfeld
Original Assignee
Tenneco Automotive Operating Company Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tenneco Automotive Operating Company Inc. filed Critical Tenneco Automotive Operating Company Inc.
Publication of WO2012148637A2 publication Critical patent/WO2012148637A2/en
Publication of WO2012148637A3 publication Critical patent/WO2012148637A3/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2066—Selective catalytic reduction [SCR]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2066—Selective catalytic reduction [SCR]
    • F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/03—Adding substances to exhaust gases the substance being hydrocarbons, e.g. engine fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06—Parameters used for exhaust control or diagnosing
    • F01N2900/18—Parameters used for exhaust control or diagnosing said parameters being related to the system for adding a substance into the exhaust
    • F01N2900/1806—Properties of reducing agent or dosing system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06—Parameters used for exhaust control or diagnosing
    • F01N2900/18—Parameters used for exhaust control or diagnosing said parameters being related to the system for adding a substance into the exhaust
    • F01N2900/1806—Properties of reducing agent or dosing system
    • F01N2900/1814—Tank level
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06—Parameters used for exhaust control or diagnosing
    • F01N2900/18—Parameters used for exhaust control or diagnosing said parameters being related to the system for adding a substance into the exhaust
    • F01N2900/1806—Properties of reducing agent or dosing system
    • F01N2900/1818—Concentration of the reducing agent
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

A control system for reducing nitrogen oxides in engine exhaust includes an emissions catalyst having an inlet adapted to receive an exhaust from the engine. A reductant tank is configured to store 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 sensor is in fluid communication with the reductant and outputs a reductant quality signal based on the reductant. A controller determines a reductant quality of the reductant based on the reductant quality signal and outputs a dosing rate signal based on the reductant quality. The injector alters a dosing rate of the reductant based on the dosing signal.
PCT/US2012/031961 2011-04-29 2012-04-03 Reductant quality sensor WO2012148637A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13/097,185 2011-04-29
US13/097,185 US20120272639A1 (en) 2011-04-29 2011-04-29 Reductant Quality Sensor

Publications (2)

Publication Number Publication Date
WO2012148637A2 WO2012148637A2 (en) 2012-11-01
WO2012148637A3 true WO2012148637A3 (en) 2012-12-27

Family

ID=47066821

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2012/031961 WO2012148637A2 (en) 2011-04-29 2012-04-03 Reductant quality sensor

Country Status (2)

Country Link
US (1) US20120272639A1 (en)
WO (1) WO2012148637A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9050561B1 (en) * 2014-03-26 2015-06-09 GM Global Technology Operations LLC Reductant quality system including rationality diagnostic
US11319852B2 (en) * 2019-08-27 2022-05-03 Caterpillar Inc. Systems and methods for fluid level and quality measurement for reductant storage systems

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090035194A1 (en) * 2007-07-31 2009-02-05 Caterpillar Inc. Exhaust treatment system with an oxidation device for NO2 control
US20090293451A1 (en) * 2008-05-29 2009-12-03 Caterpillar Inc. Exhaust control system having diagnostic capability
US20100024397A1 (en) * 2008-04-30 2010-02-04 Chi John N APPARATUS, SYSTEM, AND METHOD FOR REDUCING NOx EMISSIONS FROM AN ENGINE SYSTEM
US20110047986A1 (en) * 2009-08-17 2011-03-03 Drasner Iii Henry Joseph Retrofit Aftertreatment System for Treating Diesel Exhaust

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6063350A (en) * 1997-04-02 2000-05-16 Clean Diesel Technologies, Inc. Reducing nox emissions from an engine by temperature-controlled urea injection for selective catalytic reduction
DE19756251C1 (en) * 1997-12-17 1999-07-22 Siemens Ag Method and device for reducing nitrogen oxides in the exhaust gas of an incineration plant

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090035194A1 (en) * 2007-07-31 2009-02-05 Caterpillar Inc. Exhaust treatment system with an oxidation device for NO2 control
US20100024397A1 (en) * 2008-04-30 2010-02-04 Chi John N APPARATUS, SYSTEM, AND METHOD FOR REDUCING NOx EMISSIONS FROM AN ENGINE SYSTEM
US20090293451A1 (en) * 2008-05-29 2009-12-03 Caterpillar Inc. Exhaust control system having diagnostic capability
US20110047986A1 (en) * 2009-08-17 2011-03-03 Drasner Iii Henry Joseph Retrofit Aftertreatment System for Treating Diesel Exhaust

Also Published As

Publication number Publication date
WO2012148637A2 (en) 2012-11-01
US20120272639A1 (en) 2012-11-01

Similar Documents

Publication Publication Date Title
WO2013022587A3 (en) Reductant injection control system
WO2011103157A3 (en) On-vehicle nitrogen oxide aftertreatment system
GB2556753A (en) Sensor configuration for aftertreatment system including SCR on filter
WO2013019419A3 (en) Exhaust treatment system with hydrocarbon lean nox catalyst
WO2012078402A3 (en) Exhaust system having doc regeneration strategy
WO2012047484A3 (en) Exhaust system having cross-sensitive sensor
WO2013036406A3 (en) Pre-injection exhaust flow modifier
GB201010627D0 (en) Method for the determination of a NOx concentration value upstream of a SCR catalyst in a diesel engine
WO2012096971A3 (en) Reductant delivery device
EP2126295A4 (en) Exhaust gas after treatment system (eats)
IN2014DN10230A (en)
WO2008014072A3 (en) Method and apparatus for monitoring a urea injection system in an exhaust aftertreatment system
RU2014145035A (en) METHOD FOR ENGINE (OPTIONS) AND ENGINE SYSTEM
WO2012099667A3 (en) Miniature regeneration unit
WO2008045499A3 (en) Dual injector system for diesel emissions control
WO2007084691A3 (en) SYSTEM AND METHOD FOR NOx REDUCTION OPTIMIZATION
WO2012033704A3 (en) A method and apparatus for decreasing fuel consumption during particulate filter regeneration
JP2015081602A5 (en)
EP2554816A3 (en) NH3 emissions management in a nox reduction system
WO2011119331A3 (en) System and method for exhaust treatment
IN2012DN02822A (en)
EP2357331A4 (en) Exhaust gas purifying device
WO2009140245A3 (en) Selective catalytic reduction using controlled catalytic deactivation
EP2541012A3 (en) System for purifying exhaust gas and corresponding exhaust system
ATE556761T1 (en) EXHAUST GAS PURIFICATION DEVICE FOR AN COMBUSTION ENGINE

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12777272

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12777272

Country of ref document: EP

Kind code of ref document: A2