WO2012078402A3 - Système d'échappement ayant une stratégie de régénération du catalyseur d'oxydation (doc) - Google Patents

Système d'échappement ayant une stratégie de régénération du catalyseur d'oxydation (doc) Download PDF

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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
English (en)
Other versions
WO2012078402A2 (fr
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/de
Priority to CN2011800595543A priority patent/CN103261603A/zh
Publication of WO2012078402A2 publication Critical patent/WO2012078402A2/fr
Publication of WO2012078402A3 publication Critical patent/WO2012078402A3/fr

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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

La présente invention se rapporte à un système d'échappement (18) destiné à être utilisé dans un moteur à combustion (10). Le système d'échappement peut comprendre un conduit d'échappement (26) configuré pour recevoir un flux d'échappement du moteur à combustion, et un catalyseur d'oxydation (44) disposé à l'intérieur du conduit d'échappement. Le système d'échappement peut également comprendre un injecteur de carburant (38) configuré pour injecter sélectivement du carburant dans l'échappement à un emplacement situé en amont du catalyseur d'oxydation, un capteur de température (54) configuré pour générer un signal indicatif d'une température d'un échappement circulant à travers le conduit d'échappement, et un dispositif de commande (52) en communication avec l'injecteur de carburant et le capteur de température. Le dispositif de commande peut être configuré pour réaliser une détermination sur la base du signal indiquant qu'une couche d'oxyde s'est formée sur le catalyseur d'oxydation, et pour réguler le fonctionnement de l'injecteur de carburant pour injecter du carburant et réduire la couche d'oxyde sur la base de la détermination.
PCT/US2011/062355 2010-12-10 2011-11-29 Système d'échappement ayant une stratégie de régénération du catalyseur d'oxydation (doc) WO2012078402A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112011104327T DE112011104327T5 (de) 2010-12-10 2011-11-29 Abgassystem mit einer DOC-Regenerationsstrategie
CN2011800595543A CN103261603A (zh) 2010-12-10 2011-11-29 具有dco再生策略的排气***

Applications Claiming Priority (2)

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

Publications (2)

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

Family

ID=46197950

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2011/062355 WO2012078402A2 (fr) 2010-12-10 2011-11-29 Système d'échappement ayant une stratégie de régénération du catalyseur d'oxydation (doc)

Country Status (4)

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

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8499556B2 (en) * 2007-02-05 2013-08-06 Volvo Lastvagnar Ab Exhaust purification system with a diesel particulate filter and a method of cleaning said filter
BRPI0924120B1 (pt) * 2009-02-20 2020-11-17 Umicore Ag & Co. Kg método para purificação de gás de escape de um motor a diesel em um sistema
US8940260B2 (en) * 2011-06-10 2015-01-27 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 (de) * 2014-06-11 2015-12-17 Volkswagen Aktiengesellschaft Vorrichtung zur katalytischen chemischen Umsetzungwenigstens einer Komponente eines Gasstromsund Abgasanlage für eine Brennkraftmaschine
JP6202049B2 (ja) * 2014-07-08 2017-09-27 トヨタ自動車株式会社 内燃機関のフィルタ故障診断装置
DE102014226659A1 (de) 2014-12-19 2016-06-23 Robert Bosch Gmbh Verfahren zum Betreiben eines Methanoxidationskatalysators und Abgasnachbehandlungssystem
JP6350581B2 (ja) * 2016-04-12 2018-07-04 トヨタ自動車株式会社 内燃機関の排気浄化制御装置
CN107654301B (zh) * 2016-07-25 2019-12-24 上海汽车集团股份有限公司 一种发动机排气歧管的温度控制方法及装置
CN109578117B (zh) * 2018-12-03 2020-06-02 潍柴动力股份有限公司 一种柴油氧化催化器的恢复方法及装置
CN112682134B (zh) * 2020-12-25 2022-04-26 潍柴动力股份有限公司 一种后处理***的驻车再生***及驻车再生方法

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
WO2012078402A2 (fr) 2012-06-14
CN103261603A (zh) 2013-08-21
US20120144802A1 (en) 2012-06-14
DE112011104327T5 (de) 2013-10-10

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