WO2012078402A3 - Exhaust system having doc regeneration strategy - Google Patents

Exhaust system having doc regeneration strategy Download PDF

Info

Publication number
WO2012078402A3
WO2012078402A3 PCT/US2011/062355 US2011062355W WO2012078402A3 WO 2012078402 A3 WO2012078402 A3 WO 2012078402A3 US 2011062355 W US2011062355 W US 2011062355W WO 2012078402 A3 WO2012078402 A3 WO 2012078402A3
Authority
WO
WIPO (PCT)
Prior art keywords
exhaust
exhaust system
oxidation catalyst
fuel injector
regeneration strategy
Prior art date
Application number
PCT/US2011/062355
Other languages
French (fr)
Other versions
WO2012078402A2 (en
Inventor
James J. Driscoll
Duncan J. Arrowsmith
Original Assignee
Caterpillar 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 Caterpillar Inc. filed Critical Caterpillar Inc.
Priority to DE112011104327T priority Critical patent/DE112011104327T5/en
Priority to CN2011800595543A priority patent/CN103261603A/en
Publication of WO2012078402A2 publication Critical patent/WO2012078402A2/en
Publication of WO2012078402A3 publication Critical patent/WO2012078402A3/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
    • F01N9/00—Electrical control of exhaust gas treating apparatus
    • 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
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/025—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust
    • F01N3/0253—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust adding fuel 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
    • 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
    • F01N3/103—Oxidation catalysts for HC and CO only
    • 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
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • F01N3/2033—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using a fuel burner or introducing fuel into exhaust duct
    • 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
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
    • 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
    • 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
    • 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
    • Y02T10/40—Engine management systems

Landscapes

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

Abstract

An exhaust system (18) for use with a combustion engine (10) is disclosed. The exhaust system may have an exhaust passage (26) configured to receive a flow of exhaust from the combustion engine, and an oxidation catalyst (44) disposed within the exhaust passage. The exhaust system may also have a fuel injector (38) configured to selectively inject fuel into the exhaust at a location upstream of the oxidation catalyst, a temperature sensor (54) configured to generate a signal indicative of a temperature of exhaust flowing through the exhaust passage, and a controller (52) in communication with the fuel injector and the temperature sensor. The controller may be configured to make a determination based on the signal that an oxide layer has formed on the oxidation catalyst, and to regulate operation of the fuel injector to inject fuel and reduce the oxide layer based on the determination.
PCT/US2011/062355 2010-12-10 2011-11-29 Exhaust system having doc regeneration strategy WO2012078402A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112011104327T DE112011104327T5 (en) 2010-12-10 2011-11-29 Exhaust system with a DOC regeneration strategy
CN2011800595543A CN103261603A (en) 2010-12-10 2011-11-29 Exhaust system having DOC regeneration strategy

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/965,525 2010-12-10
US12/965,525 US20120144802A1 (en) 2010-12-10 2010-12-10 Exhaust system having doc regeneration strategy

Publications (2)

Publication Number Publication Date
WO2012078402A2 WO2012078402A2 (en) 2012-06-14
WO2012078402A3 true WO2012078402A3 (en) 2012-08-30

Family

ID=46197950

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2011/062355 WO2012078402A2 (en) 2010-12-10 2011-11-29 Exhaust system having doc regeneration strategy

Country Status (4)

Country Link
US (1) US20120144802A1 (en)
CN (1) CN103261603A (en)
DE (1) DE112011104327T5 (en)
WO (1) WO2012078402A2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008097139A1 (en) * 2007-02-05 2008-08-14 Volvo Lastvagnar Ab Exhaust purification system with a diesel particulate filter and a method of cleaning said filter
RU2524165C2 (en) * 2009-02-20 2014-07-27 Хальдор Топсеэ А/С Diesel exhaust gas cleaning
WO2012170117A1 (en) * 2011-06-10 2012-12-13 International Engine Intellectual Property Company, Llc Supplemental ammonia storage and delivery system
US9046019B2 (en) * 2011-11-04 2015-06-02 GM Global Technology Operations LLC System and method for particulate filter regeneration
US10344702B2 (en) * 2012-07-16 2019-07-09 Ford Global Technologies, Llc Differential fuel injection
US20150107226A1 (en) * 2013-10-18 2015-04-23 Cummins Ip, Inc. Gasoline dithering for spark-ignited gaseous fuel internal combustion engine
DE102014211159A1 (en) * 2014-06-11 2015-12-17 Volkswagen Aktiengesellschaft Apparatus for the catalytic chemical conversion of at least one component of a gas stream and exhaust system for an internal combustion engine
JP6202049B2 (en) * 2014-07-08 2017-09-27 トヨタ自動車株式会社 Filter failure diagnosis device for internal combustion engine
DE102014226659A1 (en) 2014-12-19 2016-06-23 Robert Bosch Gmbh A method of operating a methane oxidation catalyst and exhaust aftertreatment system
JP6350581B2 (en) * 2016-04-12 2018-07-04 トヨタ自動車株式会社 Exhaust gas purification control device for internal combustion engine
CN107654301B (en) * 2016-07-25 2019-12-24 上海汽车集团股份有限公司 Temperature control method and device for engine exhaust manifold
CN109578117B (en) * 2018-12-03 2020-06-02 潍柴动力股份有限公司 Recovery method and device for diesel oxidation catalyst
CN112682134B (en) * 2020-12-25 2022-04-26 潍柴动力股份有限公司 Parking regeneration system and parking regeneration method of aftertreatment system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050129601A1 (en) * 2003-11-04 2005-06-16 Engelhard Corporation Emissions treatment system with NSR and SCR catalysts
US20050247051A1 (en) * 2001-12-10 2005-11-10 Donaldson Company, Inc. Exhaust treatment control system for an internal combustion engine
US20080069741A1 (en) * 2006-09-20 2008-03-20 Gerald Stephen Koermer Catalysts to Reduce NOx in an Exhaust Gas Stream and Methods of Preparation
US20100251700A1 (en) * 2009-04-02 2010-10-07 Basf Catalysts Llc HC-SCR System for Lean Burn Engines

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8302387B2 (en) * 2009-08-25 2012-11-06 International Engine Intellectual Property Company, Llc Method and apparatus for de-sulfurization on a diesel oxidation catalyst
US8631642B2 (en) * 2009-12-22 2014-01-21 Perkins Engines Company Limited Regeneration assist calibration

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050247051A1 (en) * 2001-12-10 2005-11-10 Donaldson Company, Inc. Exhaust treatment control system for an internal combustion engine
US20050129601A1 (en) * 2003-11-04 2005-06-16 Engelhard Corporation Emissions treatment system with NSR and SCR catalysts
US20080069741A1 (en) * 2006-09-20 2008-03-20 Gerald Stephen Koermer Catalysts to Reduce NOx in an Exhaust Gas Stream and Methods of Preparation
US20100251700A1 (en) * 2009-04-02 2010-10-07 Basf Catalysts Llc HC-SCR System for Lean Burn Engines

Also Published As

Publication number Publication date
US20120144802A1 (en) 2012-06-14
DE112011104327T5 (en) 2013-10-10
CN103261603A (en) 2013-08-21
WO2012078402A2 (en) 2012-06-14

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