KR920016696A - 내연기관내의 촉매를 급히 예열하는 제어장치 - Google Patents

내연기관내의 촉매를 급히 예열하는 제어장치 Download PDF

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KR920016696A
KR920016696A KR1019920001922A KR920001922A KR920016696A KR 920016696 A KR920016696 A KR 920016696A KR 1019920001922 A KR1019920001922 A KR 1019920001922A KR 920001922 A KR920001922 A KR 920001922A KR 920016696 A KR920016696 A KR 920016696A
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temperature
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세이이찌로 니시가와
도시아끼 기꾸지
마사미 기누가와
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이시마루 쓰네오
닛뽕 덴소오 가부시기가이샤
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    • 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
    • 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
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P5/00—Advancing or retarding ignition; Control therefor
    • F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
    • F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
    • F02P5/15—Digital data processing
    • F02P5/1502—Digital data processing using one central computing unit
    • F02P5/1506—Digital data processing using one central computing unit with particular means during starting
    • 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
    • F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
    • F01N2430/06—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics by varying fuel-air ratio, e.g. by enriching fuel-air mixture
    • 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
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
    • 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
    • F02D41/1439—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the position of the sensor
    • F02D41/1441—Plural sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P5/00—Advancing or retarding ignition; Control therefor
    • F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
    • F02P5/045—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions combined with electronic control of other engine functions, e.g. fuel injection
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Electrical Control Of Ignition Timing (AREA)

Abstract

내용 없음

Description

내연기관내의 촉매를 급히 예열하는 제어장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 엔진과 주변장치와 관련하여 설치된 본 발명에 따른 엔진제어 장치를 보여주는 개략도. 제2도는 촉매전 환로듐이 예열되는 동안에 점화시기가 전체점화 사이클에서 지연되고 또 점화시기가 간헐적으로 지연되는 경우의 방출물 온도의 증가률과 방출물의 감소률을 표시하는 특성 그래프.

Claims (18)

  1. 내연기관의 작동상태를 검출하는 냉동작동 상태 검출수단,엔진작동 상태 검출수단에 의해 검출된 엔진 작동상태를 토대로 한 적당한 공기연료비를 얻기 위해 적당한 연료분사량을 결정하는 연료분사량 결정수단, 상기 엔진에서 발생한 방출을 정화하기 위해 상기 엔진에 연결된 배기 파이프내에 위치한 촉매, 상기 촉매는 방출을 효과적으로 정화하는 작동온도로 촉매의 온도가 되었는지를 결정하는 온도상태 결정수단, 상기 촉매온도와 상기 작동온도보다 낮은 온도상태 결정수단에 따라 결정된 연료량을 조절하여 결정된 연료량이 상기 공기 연료비에 따라 리치양과 린양을 교대로 조절하는 조절수단등을 포함하는 것을 특징으로 하는 내연 기관제어장치.
  2. 제1항에 있어서, 상기 엔진 상태 검출수단은 흡공압을 검출하는 흠입 공압센서와 엔진 횐전속도를 검출하는 엔진회전속도 센서를 포함하는 것을 특징으로 하는 내연기관 제어장치.
  3. 제1항에 있어서, 소정의 시간주기가 상기 엔진의 시동으로 부터 경과 되었는지늘 결정하는 타이머수단을 포함하는 것을 특징으로 한느 내연기관제어장치.
  4. 제1항에 있어서, 온도상태 결정수단은 엔진 냉각액 온도가 소정의 값이 되었는지를 결정하기 위해 엔진 냉각액 온도를 검출하는 엔진 냉각액 온도센서를 포함하는 것을 특징으로 하는 내연기관 제어장치.
  5. 제1항에 있어서, 상기 조절수단은 모든 분사사이클마다 리치양 조절로 부터 린량조종까지 상기 결정된 연료량을 바꾸는 것을 특징으로 하는 내연기관 제어장치.
  6. 내연기관의 작동상태를 검출하는 엔진작동상태 검출수단, 엔진작동상태 검출수단에 의해 검출된 엔진 작동 상태를 토대로한 상기 엔진의 적당한 점화시간을 결정하는 점화시각 결정수단, 상기 엔진으로 부터 발생한 방출을 정화하기 위해 상기 엔진에 연결된 배기파이프내에 위치한 촉매, 상기 촉매가 방출을 효과적으로 정화 하수 있는 작동온도로 상기 촉매의 온도가 되는지를 결정하는 온도 상태 결정수단, 촉매온도가 작동온도보다 낮은 온도상태 결정수단의 결정을 따라 결정된 점화시기를 간헐적으로 지연시키는 지연수단등을 포함하는 것을 특징으로 하는 내연기관 제어장치.
  7. 제6항에 있어서, 상기 지연수단은 모든 다른 점화사이클마다 결정된 점화시기를 지연시키는 것을 특징으로 하는 내연기관 제어장치.
  8. 제6항에 있어서, 엔진상태 검출수단은 흡입공압을 검출하는 흡입 공압센서와 엔진회전속도를 검출하는 엔진 회전속도 센서를 포함하는 것을 특징으로 하는 내연기관제어장치.
  9. 제6항에 있어서, 상기온도상태 결정수단은소정의 시간주기가 상기 엔진의 시동으로부터 경과되었는지를 결정하느 타이머수단을 포함하는 것을 특징으로 하는 내연기관 제어장치.
  10. 제6항에 있어서, 온도상태 결정수단은 엔진 냉각액 온도가 소정의 값이 되었는지를 결정하기 위해 엔진 냉각액 온도를 검출하는 엔진 냉각액 온도센서를 포함하는 것을 특징으로 하는 내연기관 제어장치.
  11. 내연기관의 작동상태를 검출하는 엔진 작동상태 검출수단, 엔진작동상태 검출수단에 의해 검출된 엔진작동 상태를 토대로 한 적당한 공기 연료비율을 얻기 위해 적당한 여료 분사량을 결정하는 연료분사량 결정수단, 엔진 작동상태검출수단에 의해 검출된 엔진작동상태를 토대로 한 상기 엔진의 적당한 점화시각을 결정하는 점화시각 결정수단, 상기 엔진으로 부터 발생한 방출을 정화하기 위해 엔진에 연결된 배기파이프내에 위치한 촉매, 상기 촉매가 방출을 효과적으로 정화할 수 있는 작동온도로 촉매의 온도가 되었나를 결정하는 온도상태 결정수단, 상기 촉매온도가 상기 작동온도보다 낮은 온도상태 결정수단의 결정에 따라 결정된 연료량을 조절하여 상기 결정된 연료량이 공기 연료비율에 대해 리치량과 린량으로 교대로 조절하는 조절수단, 상기 조절수단이 결정된 연료량을 리치양으로 조절할 때 결정된 점화시기를 지연시키는 지연수단등을 포함하는 것을 특징으로 하는 내연기관 제어장치.
  12. 제11항에 있어서, 연료부사결정수단은 이론적 연료비를 얻기 위해 상기 연료분사량을 결정하는 것을 특징으로 하는 내연기관 제어장치.
  13. 제11항에 있어서, 내연작동상태 검출수단은 흡입공압을 검출하는 흡입공압센서 및 엔진회전속도를 검출하는 엔진회전속도센서를 포함하는 것을 특징으로 하는 내연기관 제어장치.
  14. 제11항에 있어서, 상기 온도 상태결정수단은 소정의 시간주기가 상기 엔진의 시동으로 부터 경과되었는지를 결정하는 타이머수단을 포함하는 것을 특징으로 하는 내연기관 제어장치.
  15. 제11항에 있어서, 상기 온도상태결정수단은 엔진 냉각액온도가 소정의 값이 되었는지를 결정하기 위해 엔진 냉각액 온도를 검출하는 엔진냉각액 온도센서를 포함하는 것을 특징으로 하는 내연기관 제어장치.
  16. 제11항에 있어서, 상기 지연수단은 상기 결정된 연료량이 상기 린량을 조절할때 엔진토오크를 증가시키기 위해 제1소정의 값까지 상기 결정된 점화시각을 지연시키는 제1지연수단과 상기 결정된 연료량이 상기 리치량으로 조절될때 상기 엔진토오크를 감소하기 위해 제1소정의 각보다 큰 제2소정의 각까지 상기 결정된 점화시각을 지연시키는 제2지연수단을 포함하는 것을 특징으로 하는 내연기관 제어장치.
  17. 제11항에 있어서, 상기 지연수단은 상기 결정된 연료량이 리치량으로 조절될때만 상기 결정된 점화시각을 지연시키는 것을 특징으로 하는 내연기관 제어장치.
  18. 내연기관의 작동상태를 검출하는연료분사량 결정장치, 상기 엔진 작동상태 검출수단에 의해 검출된 엔진작동상태를 토대로 한 이론적 공기 연료비에 대해 적당한 연료분사량을 결정하는 연료분사량 검출장치, 상기 엔진작동상태 검출수단에 의해 검출된 엔진 작동상태를 토대로 한 상기 엔진의 적당한 점화시각을 결정하는 점화시각 결정수단, 상기 엔진으로 부터 발생한 방출을 정화하기 위해 상기 엔진에 연결된 배기 파이프내에 위치한 촉매 상기 촉매가 방출을 효과적으로 정화할수 있는 작동온도로 촉매의 온도가 되었나를 결정하는 온도상태 결정수단, 상기촉매온도가 작동온도보다 낮은 상기 온도 상태결정수단의 결정에 따라 결저된 연료량을 조절하여 상기 결정된 온도가 제1소정의 간격으로 이론 연료비에 대해 리치량과 린량을 교대로 조절하는 조절수단, 상기 촉매온도가 작동온도보다 낮은 동안 상기 제1간격보다 짧은 제2소정의 간격으로 상기 결정된 점화 시각을 지연시키는 지연수단들을 포함하는 것을 특징으로 하는 내연기관 제어장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019920001922A 1991-02-12 1992-02-11 내연기관내의 촉매를 급히 예열하는 제어장치 KR0184303B1 (ko)

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EP0499207A1 (en) 1992-08-19
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CA2060433C (en) 1999-11-02
US5211011A (en) 1993-05-18
DE69206286T3 (de) 2003-11-27
EP0499207B2 (en) 2002-08-28
DE69206286D1 (de) 1996-01-11
JP2867747B2 (ja) 1999-03-10
EP0499207B1 (en) 1995-11-29
JPH04308311A (ja) 1992-10-30
DE69206286T2 (de) 1996-04-18

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