US20110107739A1 - Warm-up method and system for warming up exhaust purification catalyst - Google Patents

Warm-up method and system for warming up exhaust purification catalyst Download PDF

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Publication number
US20110107739A1
US20110107739A1 US12/995,090 US99509009A US2011107739A1 US 20110107739 A1 US20110107739 A1 US 20110107739A1 US 99509009 A US99509009 A US 99509009A US 2011107739 A1 US2011107739 A1 US 2011107739A1
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US
United States
Prior art keywords
turbine
exhaust gas
exhaust
warm
purification catalyst
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
US12/995,090
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English (en)
Inventor
Masahiro Shimizu
Kazuhiko Shinagawa
Yoshiyuki Miyagi
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IHI Corp
Original Assignee
IHI Corp
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 IHI Corp filed Critical IHI Corp
Assigned to IHI CORPORATION reassignment IHI CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MIYAGI, YOSHIYUKI, SHIMIZU, MASAHIRO, SHINAGAWA, KAZUHIKO
Publication of US20110107739A1 publication Critical patent/US20110107739A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/04—Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump
    • F02B37/10—Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump at least one pump being alternatively or simultaneously driven by exhaust and other drive, e.g. by pressurised fluid from a reservoir or an engine-driven pump
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
    • F02B39/02—Drives of pumps; Varying pump drive gear ratio
    • F02B39/08—Non-mechanical drives, e.g. fluid drives having variable gear ratio
    • F02B39/10—Non-mechanical drives, e.g. fluid drives having variable gear ratio electric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D21/00—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas
    • F02D21/06—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air
    • F02D21/08—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air the other gas being the exhaust gas of engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0002—Controlling intake air
    • F02D41/0007—Controlling intake air for control of turbo-charged or super-charged engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F02D41/024—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus
    • F02D41/0255—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus to accelerate the warming-up of the exhaust gas treating apparatus at engine start
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/01—Engine exhaust gases
    • B01D2258/012—Diesel engines and lean burn gasoline engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
    • B01D53/9454—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific device
    • 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
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/36—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an exhaust flap
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F02D41/024—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus
    • F02D2041/026—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus using an external load, e.g. by increasing generator load or by changing the gear ratio
    • 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

Definitions

  • a motor vehicle mounted with an internal combustion engine such as a diesel engine or a gasoline engine uses a catalytic converter containing a catalyst, for example, a three-way catalyst, for purifying the exhaust gas.
  • a catalytic converter containing a catalyst for example, a three-way catalyst, for purifying the exhaust gas.
  • the reducing ability of such an exhaust purification catalyst is activated at elevated temperatures, and therefore, temperature control is important for the proper functioning of the exhaust purification catalyst.
  • the temperature of the exhaust gas is low, so that a certain period of time (warm-up time) is needed to activate the exhaust purification catalyst.
  • various methods have been adopted so far, such as a method of using a heater to heat the exhaust purification catalyst and a method of setting a relatively high idling speed immediately after the start of the engine.
  • the warm-up system may further comprise: an exhaust gas recirculation device for recirculating an exhaust gas of the engine from an upstream side of the turbine back to a downstream side of a compressor of the turbocharger; and control means for operating the exhaust gas recirculation device to recirculate the exhaust gas when the exhaust purification catalyst needs to be warmed up.
  • the turbine of the turbocharger is applied with counter torque, so that the exhaust gas discharged from the internal combustion engine slows down and takes more time to travel, making it possible to raise the temperature of the exhaust gas in a portion of the exhaust passage between the internal combustion engine and the turbine. Accordingly, the exhaust gas of high temperature can be supplied to the exhaust purification catalyst, whereby the warm-up time is shortened and the exhaust purification catalyst is activated in a short time.
  • FIG. 1 schematically illustrates an exhaust purification catalyst warm-up system according to a first embodiment of the present invention
  • FIG. 8 schematically illustrates an exhaust purification catalyst warm-up system according to a fifth embodiment of the present invention.
  • the exhaust purification catalyst warm-up system illustrated in FIG. 1 is a system for warming up an exhaust purification catalyst 4 (catalytic converter) which is arranged in an exhaust passage 3 of an internal combustion engine (engine 2 ) equipped with a turbocharger 1 .
  • the warm-up system comprises load means (electric motor 1 m ) coupled to the turbine 1 t of the turbocharger 1 , and control means S for driving the load means (electric motor 1 m ) during a warm-up of the exhaust purification catalyst 4 to apply counter torque to the turbine 1 t.
  • a pressure sensor 31 is arranged in the exhaust passage 3 to detect the pressure of the exhaust gas on the inlet side of the exhaust purification catalyst 9 .
  • the sensor 31 is electrically connected to the control means 5 , and in accordance with the output from the sensor 31 , the control means 5 controls the electric motor 1 m.
  • the sensor 31 may be arranged closer to the turbine 1 t to detect the pressure of the exhaust gas on the outlet side of the turbine 1 t .
  • the control means 5 applies the counter torque to the turbine 1 t in such a manner that the exhaust gas pressure, indicated by the output of the pressure sensor 31 , is about 10 to 30% lower than that observed when no counter torque is applied to the turbine 1 t.
  • FIGS. 5 through 10 schematically illustrate exhaust purification catalyst warm-up systems according to second through seventh embodiments, respectively, of the present invention.
  • like reference numerals refer to like elements already explained above with reference to the first embodiment, and description of such elements is omitted.
  • variable geometry turbocharger With the variable geometry turbocharger, the flow rate of the exhaust gas flowing into the turbine 1 t can be controlled by opening/closing the variable nozzle 1 n, thus controlling the flow rate of the compressed air supplied to the engine 2 , whereby high supercharging efficiency is ensured over a wide operating range of the engine 2 with the use of the single turbocharger 1 .
  • the variable nozzle 1 n represents all types of mechanisms that enable the turbocharger 1 to vary its capacity, and includes a flap type and a vane type, for example.
  • the variable nozzle 1 n is electrically connected to the control means 5 so as to be opened and closed at desired timing.

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)
  • Exhaust Gas After Treatment (AREA)
  • Supercharger (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
US12/995,090 2008-05-30 2009-03-25 Warm-up method and system for warming up exhaust purification catalyst Abandoned US20110107739A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2008142458A JP5177401B2 (ja) 2008-05-30 2008-05-30 排気ガス浄化触媒の暖機方法及びシステム
JP2008-142458 2008-05-30
PCT/JP2009/055986 WO2009145002A1 (fr) 2008-05-30 2009-03-25 Procédé et système pour réchauffer un catalyseur de purification de gaz d'échappement

Publications (1)

Publication Number Publication Date
US20110107739A1 true US20110107739A1 (en) 2011-05-12

Family

ID=41376888

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/995,090 Abandoned US20110107739A1 (en) 2008-05-30 2009-03-25 Warm-up method and system for warming up exhaust purification catalyst

Country Status (6)

Country Link
US (1) US20110107739A1 (fr)
EP (1) EP2302184B1 (fr)
JP (1) JP5177401B2 (fr)
KR (1) KR101244607B1 (fr)
CN (1) CN102046940B (fr)
WO (1) WO2009145002A1 (fr)

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US20110022289A1 (en) * 2009-07-27 2011-01-27 Ecomotors International, Inc. Method of controlling an electrically assisted turbocharger
US20120297767A1 (en) * 2009-07-27 2012-11-29 Ecomotors International, Inc. System and Method to Control an Electronically-Controlled Turbocharger
US20130199179A1 (en) * 2010-10-28 2013-08-08 Isao Kitsukawa Turbocharger system
US20140060040A1 (en) * 2012-09-06 2014-03-06 Ford Global Technologies, Llc Secondary air introduction system
US20140067227A1 (en) * 2012-08-29 2014-03-06 Ford Global Technologies, Llc Method and system for improving starting of a turbocharged engine
US20140251267A1 (en) * 2013-03-07 2014-09-11 Ford Global Technologies, Llc Method and system for improving engine starting
WO2014158077A1 (fr) * 2013-03-26 2014-10-02 Kasi Technologies Ab Système de suralimentation et procédé de commande d'un système de suralimentation
US8925302B2 (en) 2012-08-29 2015-01-06 Ford Global Technologies, Llc Method and system for operating an engine turbocharger
US9014952B2 (en) 2012-08-29 2015-04-21 Ford Global Technologies, Llc Method and system for improving stopping and starting of a turbocharged engine
US9151200B2 (en) 2012-09-06 2015-10-06 Ford Global Technologies, Llc Secondary air introduction system and method for system operation
EP2940269A1 (fr) * 2014-04-29 2015-11-04 Mahle International GmbH Procédé destiné au fonctionnement d'un véhicule automobile
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US20190048792A1 (en) * 2016-07-15 2019-02-14 Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. Supercharging system and internal combustion engine
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US9234445B2 (en) * 2013-06-06 2016-01-12 Cummins Emission Solutions Inc. Systems and techniques for nozzle cooling of diesel exhaust fluid injection systems
US9032927B1 (en) * 2013-11-08 2015-05-19 Achates Power, Inc. Cold-start strategies for opposed-piston engines
JP2016011632A (ja) * 2014-06-30 2016-01-21 日産自動車株式会社 内燃機関の制御装置
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JP6624969B2 (ja) * 2016-02-24 2019-12-25 日本車輌製造株式会社 エンジン発電機
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Cited By (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120297767A1 (en) * 2009-07-27 2012-11-29 Ecomotors International, Inc. System and Method to Control an Electronically-Controlled Turbocharger
US20110022289A1 (en) * 2009-07-27 2011-01-27 Ecomotors International, Inc. Method of controlling an electrically assisted turbocharger
US8958971B2 (en) * 2009-07-27 2015-02-17 Ecomotors, Inc. System and method to control an electronically-controlled turbocharger
US9334833B2 (en) * 2010-10-28 2016-05-10 Isuzu Motors Limited Turbocharger system
US20130199179A1 (en) * 2010-10-28 2013-08-08 Isao Kitsukawa Turbocharger system
RU2647177C2 (ru) * 2012-08-29 2018-03-14 Форд Глобал Технолоджис, ЛЛК Способ управления двигателем и система двигателя
US20140067227A1 (en) * 2012-08-29 2014-03-06 Ford Global Technologies, Llc Method and system for improving starting of a turbocharged engine
US9714618B2 (en) * 2012-08-29 2017-07-25 Ford Global Technologies, Llc Method and system for improving starting of a turbocharged engine
US8925302B2 (en) 2012-08-29 2015-01-06 Ford Global Technologies, Llc Method and system for operating an engine turbocharger
US9014952B2 (en) 2012-08-29 2015-04-21 Ford Global Technologies, Llc Method and system for improving stopping and starting of a turbocharged engine
US9556787B2 (en) 2012-08-29 2017-01-31 Ford Global Technologies, Llc Method and system for improving stopping and starting of a turbocharged engine
US9404415B2 (en) 2012-08-29 2016-08-02 Ford Global Technologies, Llc Method and system for operating an engine turbocharger
US9238983B2 (en) * 2012-09-06 2016-01-19 Ford Global Technologies, Llc Secondary air introduction system
US20140060040A1 (en) * 2012-09-06 2014-03-06 Ford Global Technologies, Llc Secondary air introduction system
US9151200B2 (en) 2012-09-06 2015-10-06 Ford Global Technologies, Llc Secondary air introduction system and method for system operation
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CN102046940B (zh) 2013-05-22
EP2302184A1 (fr) 2011-03-30
EP2302184A4 (fr) 2012-05-30
KR20110003375A (ko) 2011-01-11
WO2009145002A1 (fr) 2009-12-03
CN102046940A (zh) 2011-05-04
JP2009287495A (ja) 2009-12-10
JP5177401B2 (ja) 2013-04-03
EP2302184B1 (fr) 2014-12-24
KR101244607B1 (ko) 2013-03-25

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