KR930004622A - 촉매의 저장 능력을 정하는 방법 및 장치 - Google Patents

촉매의 저장 능력을 정하는 방법 및 장치 Download PDF

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KR930004622A
KR930004622A KR1019920015449A KR920015449A KR930004622A KR 930004622 A KR930004622 A KR 930004622A KR 1019920015449 A KR1019920015449 A KR 1019920015449A KR 920015449 A KR920015449 A KR 920015449A KR 930004622 A KR930004622 A KR 930004622A
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South Korea
Prior art keywords
catalyst
time
integration
detector
storage capacity
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KR1019920015449A
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English (en)
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KR100260069B1 (ko
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블리쉬케 프란크
쉬나이더 에리히
쉬나이벨 에베르하르트
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랄프 베렌스; 게오르그 뮐러
로베르트 보쉬 게엠베하
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N11/00Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • F01N11/007Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring oxygen or air concentration downstream of the exhaust apparatus
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10Exhaust 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
    • F01N3/18Exhaust 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
    • F01N3/20Exhaust 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2550/00Monitoring or diagnosing the deterioration of exhaust systems
    • F01N2550/02Catalytic activity of catalytic converters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2900/00Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/04Methods of control or diagnosing
    • F01N2900/0422Methods of control or diagnosing measuring the elapsed time
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/40Engine management systems

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Abstract

내용 없음.

Description

촉매의 저장 능력을 정하는 방법 및 장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 촉매를 갖는 내연기관과 촉매의 저장능력을 정하기 위한 장치의 개략 블럭도,
제2도는 촉매의 앞쪽(실선)내지 촉매의 뒤쪽(점선)의 감지기에 의해서 측정된 람다값의 시간적 특성을 개략 도시하는 선도,
제3A도는 제1도에 도시하는 장치에 의해 실시되는 방법을 설명하는 플로우챠트도,
제3B도는제1도에 도시하는 장치에 의해 실시되는 방법을 설명하는 플로우챠트도.

Claims (5)

  1. 농후에서 희박 및 그 역으로의 변화를 나타내는 각각 촉매의 전방 및 후방의 산소 측정 감지기의 신호λ-V 및 λ-H 써서 촉매의 저장능력을 정하는 방법에서 Δλ-V(t)=λ-V(t)-1, LM(t)=엔진, 따라서 촉매로도 흐르는 공기 질량 유량, t-s=t-PS-(t-GV+t-GH), t-PS=측정된 양 감지기의 신호의 위상 어긋남 시간, t=GV=K1/LM=전방의 감지기로부터 촉매의 시단까지의 가스 통과시간, t-GKH=K2/LM=촉매의 시단에서 후방의 감지기가지의 가스 통과시간, K1과K2=감지기의 배치와 촉매의 체적에 관계하는 정수로서, 저장능력이 적분량 Δλ-V(t)ㆍLM(t)의 시간 적분에 비례하는 양으로 정해지며 이 적분이 전방의 감지기의 신호가 농후에서 희박으로 또는 그 역으로 변화하는 시점에서 T-O에서 개시되며 상기 적분의 기간 ts후에 종료되는 것을 특징으로 하는 촉매의 저장능력을 정하는 방법.
  2. 제1항에 있어서, K3을 공기의 산소 함유량을 나타내는 정수로 하고, 적분량으로서 K3ㆍΔλ-V(t)ㆍLM(t)의 양이 사용되는 것을 특징으로 하는 촉매의 저장 능력을 정하는 방법.
  3. 제1항 또는 제2항에 있어서, 전적분에 대한 LM(t)이 적분 공정의 개시시의 값 LM(T-O)에 세트되는 것을 특징으로 하는 촉매의 저장능력을 정하는 방법.
  4. 제1항 내지 제3항중 어느 한 항에 있어서, 적분이 적분량의 디스크 리트인 값의 가산으로서 행해지며 이 값이 소정의 샘플링 기간 t-AT의 간격으로 형성되며 가산 개수n가 분수 t-s/t-AT의 정수 부분으로서 구해지는 것을 특징으로 하는 촉매의 저장 능력을 정하는 방법.
  5. 농후에서 희박 및 그 역으로의 변화를 나타내는 각각 촉매의 전방 및 후방의 산소 측정 감지기의 신호λ-V 및 λ-H 써서 촉매의 저장능력을 정하는 장치에서t-PS=측정된 양 감지기의 신호의 위상 어긋남 시간, t=GV=K1/LM=전방의 감지기로부터 촉매의 시단까지의 가스 통과시간, t-GKH=K2/LM=촉매의 시단에서 후방의 감지기가지의 가스 통과시간, K1과K2=감지기의 배치와 촉매의 체적에 관계하는 정수로서,t-s=tPS-(t-GV+t-GKH)의 식을 따라서 저장시간 t-s를 결정하는 시간 결정장치(15)와, Δλ-V(t)=λ-V(t)-1LM(5)=엔진, 따라서 촉매로도 흐르는 공기 질량 유량으로서, 적분량 Δλ-V(t)ㆍLM(t)의 시간 적분을 계산하는 적분장치(14)를 가지며, 상기 적분이 전방의 감지기의 신호가 농후에서 회박으로 또는 그 역으로 변화하는 시점 T-O에서 개시되며 상기 적분의 기간 t-s후에 종료되며 상기 시간 적분이 저장 능력에 비례하는 것을 특징으로 하는 촉매의 저장 능력을 정하는 장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개되는 것임.
KR1019920015449A 1991-08-30 1992-08-27 촉매 변환기의 저장 능력을 정하는 방법 및 장치 KR100260069B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4128823A DE4128823C2 (de) 1991-08-30 1991-08-30 Verfahren und Vorrichtung zum Bestimmen des Speichervermögens eines Katalysators
DEP4128823.8 1991-08-30

Publications (2)

Publication Number Publication Date
KR930004622A true KR930004622A (ko) 1993-03-22
KR100260069B1 KR100260069B1 (ko) 2000-07-01

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US (1) US5335538A (ko)
JP (1) JP3325919B2 (ko)
KR (1) KR100260069B1 (ko)
DE (1) DE4128823C2 (ko)
ES (1) ES2092423B1 (ko)

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ES2092423B1 (es) 1997-06-01
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DE4128823A1 (de) 1993-03-04
ES2092423A1 (es) 1996-11-16
US5335538A (en) 1994-08-09
KR100260069B1 (ko) 2000-07-01
JPH05209510A (ja) 1993-08-20

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