KR950033013A - NOx 촉매를 장착한 연료분산 제어방법 및 장치 - Google Patents

NOx 촉매를 장착한 연료분산 제어방법 및 장치 Download PDF

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Publication number
KR950033013A
KR950033013A KR1019950004207A KR19950004207A KR950033013A KR 950033013 A KR950033013 A KR 950033013A KR 1019950004207 A KR1019950004207 A KR 1019950004207A KR 19950004207 A KR19950004207 A KR 19950004207A KR 950033013 A KR950033013 A KR 950033013A
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South Korea
Prior art keywords
engine
fuel ratio
controlling
air
control method
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KR1019950004207A
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English (en)
Inventor
타케시 아타고
토시오 호리
유우이찌 키타하라
오사무 쿠로다
Original Assignee
가나이 쯔도무
가부시끼가이샤 히다찌세이사꾸쇼
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Application filed by 가나이 쯔도무, 가부시끼가이샤 히다찌세이사꾸쇼 filed Critical 가나이 쯔도무
Publication of KR950033013A publication Critical patent/KR950033013A/ko

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Classifications

    • 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
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/146—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an NOx content or concentration
    • F02D41/1463—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an NOx content or concentration of the exhaust gases downstream of exhaust gas treatment apparatus
    • F02D41/1465—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an NOx content or concentration of the exhaust gases downstream of exhaust gas treatment apparatus with determination means using an estimation
    • 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
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1473—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation method
    • F02D41/1475—Regulating the air fuel ratio at a value other than stoichiometry
    • 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
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1477—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation circuit or part of it,(e.g. comparator, PI regulator, output)
    • F02D41/1481—Using a delaying circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/08—Exhaust gas treatment apparatus parameters
    • F02D2200/0811—NOx storage efficiency
    • 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
    • F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus
    • F02D41/0275—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus the exhaust gas treating apparatus being a NOx trap or adsorbent

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

본 발명은 목적은, NOx의 발생을 억제한 린번 시스템을 공시(供試)하는 것이다.
엔진의 운전조건을 검출하고, 공급하는 공연비를 변화설정하는 수단, 엔진의 배기관에 설치되는 배기가스중의 우해성분을 정화하는 촉매수단으로 되어있다.
3원촉매를 사용한 공연비의 제어를 적절하게 행하는 것으로, 린 공연비 설정 조건에서의 NOx를 환원정화할 수가 있다.
따라서, 종래 3원촉매와 NOx환원촉매의 2개의 촉매 콘버터가 필요했던 시스템의 감소화, 코스트 저감등이 가능하게 된다.

Description

NOx촉매를 장착한 연료분사 제어방법 및 장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 일 실시예를 표시하는 도면, 제2도는 본 발명의 일 실시예를 표시하는 도면, 제3도는 본 발명에서 사용하는 촉매의 공연비와 촉매정화 성능의 관계를 표시하는 도면, 제4도는 본 발명에서 사용하는 촉매의 공연비와 NOx환원 성능을 표시하는 도면.

Claims (5)

  1. 엔진의 연소상태를 제어하고, 연소의 공연비를 제어하는 동시에 배기계에 알루미나 담체에 적어도 Rh,Pt(and/or Pd) 및 La의 금속을 담지한 NOx를 환원하는 기능을 갖는 촉매를 장착한 것에 있어서, 엔진에 공급 공연비를 엔진의 운전상태를 표시하는 패라메터 및 또는 소정운전의 경과시간에 관한 인자에 의해 제어하는 것을 특징으로 하는 연료분사 제어방법.
  2. 제1항에 있어서, 상기 공급 공연비는 한편은 스토이키어 및 그것에 의해 리치인 타편은 린상태(A/F=22정도)이며, 이것들의 상기 인자 및/또는 패라메터에 의해 각각 소정시간으로 전환하는 것을 특징으로 하는 연료분사 제어방법.
  3. 제1항 또는 제2항에 있어서, 상기 공급 공연비의 린과 스토이키어 및 그것에 의해 리치 상태과의 시간비(K)는, 엔진에서 배출되는 가스의 값과 배기가스의 규제처 및 촉매의 정화율에 근거하여 정해지는 것을 특징으로 하는 연료분사 제어방법.
  4. 제2항 또는 제3항에 있어서, 상기 린과 스토이키어와의 시간비(K)는, 엔진의 운전 조건에 의해 가변적으로 설정하는 것을 특징으로 하는 연료분사 제어방법.
  5. 엔진의 연소상태를 제어하고, 연소의 공연비를 제어하는 동시에 배기계에 알루미나 담체에 적어도 Rh,Pt(and/or Pd) 및 La의 금속을 담지한 NOx를 환원하는 기능을 갖는 촉매를 장착하는데 있어서, 엔진에의 공급 공연비를 엔진의 운전상태를 표시하는 패러메터 및/또는 소정 운전의 경과시간에 관한 인자에 의해 제어하는 것을 특징으로 하는 연료분사 제어방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019950004207A 1994-02-28 1995-02-28 NOx 촉매를 장착한 연료분산 제어방법 및 장치 KR950033013A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP94-029273 1994-02-28
JP02927394A JP3624429B2 (ja) 1994-02-28 1994-02-28 内燃機関の制御装置

Publications (1)

Publication Number Publication Date
KR950033013A true KR950033013A (ko) 1995-12-22

Family

ID=12271683

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950004207A KR950033013A (ko) 1994-02-28 1995-02-28 NOx 촉매를 장착한 연료분산 제어방법 및 장치

Country Status (4)

Country Link
US (1) US5791139A (ko)
JP (1) JP3624429B2 (ko)
KR (1) KR950033013A (ko)
DE (1) DE19506980C2 (ko)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6345496B1 (en) 1995-11-09 2002-02-12 Toyota Jidosha Kabushiki Kaisha Method and device for purifying exhaust gas of an engine
US6047542A (en) * 1995-11-17 2000-04-11 Toyota Jidosha Kabushiki Kaisha Method and device for purifying exhaust gas of engine
WO1997019261A1 (fr) * 1995-11-17 1997-05-29 Toyota Jidosha Kabushiki Kaisha Dispositif de reglage des emissions d'echappement pour moteurs a combustion interne
DE19646651C1 (de) * 1996-11-12 1998-04-09 Daimler Benz Ag Verfahren zum Betreiben einer fremdgezündeten Brennkraftmaschine
JP3456408B2 (ja) * 1997-05-12 2003-10-14 トヨタ自動車株式会社 内燃機関の排気浄化装置
GB2326953A (en) * 1997-06-30 1999-01-06 Ford Motor Co Motor vehicle exhaust Catalyst regeneration
DE19739848A1 (de) * 1997-09-11 1999-03-18 Bosch Gmbh Robert Brennkraftmaschine insbesondere für ein Kraftfahrzeug
DE19739847A1 (de) * 1997-09-11 1999-04-15 Bosch Gmbh Robert Brennkraftmaschine insbesondere für ein Kraftfahrzeug
DE19755600C2 (de) * 1997-12-15 2002-01-17 Bosch Gmbh Robert Betrieb eines Verbrennungsmotors in Verbindungmit einem NOx-Speicherkatalysator
DE19801815A1 (de) * 1998-01-19 1999-07-22 Volkswagen Ag Mager-Regeneration von NOx-Speichern
DE19811257A1 (de) 1998-03-14 1999-09-16 Volkswagen Ag Verfahren zur Steuerung der Abgasnachbehandlung eines DI-Otto- und Magermotors
DE19819461B4 (de) * 1998-04-30 2004-07-01 Siemens Ag Verfahren zur Abgasreinigung mit Trimmregelung
DE19828928C2 (de) * 1998-06-29 2003-04-17 Siemens Ag Verfahren zur Überwachung des Abgasreinigungssystems einer Brennkraftmaschine
GB2350206A (en) * 1999-05-11 2000-11-22 Ford Motor Co Switching between lean and rich fuel/air mixtures in an internal combustion engine
US6266955B1 (en) 1999-08-20 2001-07-31 Caterpillar Inc. Diagnostic system for an emissions control on an engine
JP3496593B2 (ja) * 1999-09-30 2004-02-16 マツダ株式会社 火花点火式直噴エンジンの制御装置
GB9927563D0 (en) * 1999-11-23 2000-01-19 Williamson Ian A process and method for blending a fuel containing a high molecular weight compound
US20040118034A1 (en) * 1999-11-23 2004-06-24 Williamson Ian Vernon Fuel composition containing heavy fraction
AU1927901A (en) * 1999-11-23 2001-06-04 Clifford J. Hazel Fuel additive, additive-containing fuel compositions and method of manufacture
FR2804175B1 (fr) * 2000-01-20 2002-04-12 Peugeot Citroen Automobiles Sa Systeme d'aide a la regeneration d'un filtre a particules integre dans une ligne d'echappement d'un moteur diesel de vehicule automobile
US7135153B2 (en) * 2002-03-07 2006-11-14 Southwest Research Institute NOx reduction system for diesel engines, using hydrogen selective catalytic reduction
JP3735594B2 (ja) * 2002-06-28 2006-01-18 株式会社東芝 光ディスク装置と光ディスク装置の待機方法
US7199088B2 (en) 2002-07-01 2007-04-03 Shell Oil Company Lubricating oil for a diesel powered engine and method of operating a diesel powered engine
US20100018476A1 (en) * 2007-05-31 2010-01-28 Svetlana Mikhailovna Zemskova On-board hydrogen generator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0799110B2 (ja) * 1987-08-17 1995-10-25 本田技研工業株式会社 内燃エンジンの空燃比フィ−ドバック制御方法
EP0560991B9 (en) * 1991-10-03 2005-01-26 Toyota Jidosha Kabushiki Kaisha Device for purifying exhaust of internal combustion engine
DE69326217T3 (de) * 1992-06-12 2009-11-12 Toyota Jidosha Kabushiki Kaisha, Toyota-shi Abgasemissionssteuerungssystem für verbrennungsmotoren

Also Published As

Publication number Publication date
JPH07238852A (ja) 1995-09-12
JP3624429B2 (ja) 2005-03-02
US5791139A (en) 1998-08-11
DE19506980A1 (de) 1995-09-07
DE19506980C2 (de) 1996-07-18

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