KR930701685A - 내연기관 배기 시스템내의 촉매 변환기의 촉매 활성도를 모니터링하는 방법 - Google Patents

내연기관 배기 시스템내의 촉매 변환기의 촉매 활성도를 모니터링하는 방법

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Publication number
KR930701685A
KR930701685A KR1019930700574A KR930700574A KR930701685A KR 930701685 A KR930701685 A KR 930701685A KR 1019930700574 A KR1019930700574 A KR 1019930700574A KR 930700574 A KR930700574 A KR 930700574A KR 930701685 A KR930701685 A KR 930701685A
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value
internal combustion
combustion engine
measured temperature
measured
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KR1019930700574A
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English (en)
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KR100196611B1 (en
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볼프강 마우스
헬무트 스바르스
롤프 브릭
Original Assignee
볼프강 마우스·지그프리트 나스
에미텍 게젤샤프트 퓌어 에미시온스테크놀로기 엠베하
지그프리트 나스
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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
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus
    • 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
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/08—Safety, indicating, or supervising devices
    • 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/008—Mounting or arrangement of exhaust sensors in or on exhaust 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
    • F01N9/00—Electrical control of exhaust gas treating apparatus
    • 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
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/08—Safety, indicating, or supervising devices
    • F02B77/085—Safety, indicating, or supervising devices with sensors measuring combustion processes, e.g. knocking, pressure, ionization, combustion flame
    • F02B77/086—Sensor arrangements in the exhaust, e.g. for temperature, misfire, air/fuel ratio, oxygen sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
    • G01K7/18—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • 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
    • F01N2550/00—Monitoring or diagnosing the deterioration of exhaust systems
    • F01N2550/02—Catalytic activity of catalytic converters
    • 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
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
    • 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
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • 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)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

본 발명은 내연기관(3)의 배기 시스템내에서 촉매 변환기(1)의 촉매 활성도를 모니터링 하는 방법에 있어서, 촉매 변환기(1)에 설치된 적어도 2개의 온도측정센서(4, 5, 6)에 의해 발생된 신호로부터 측정온도값이 유도된다. 측정온도값은 장시간 동안 관찰되어 내연기관(3)의 다수의 작동상태를 고려한 평균값이 유도되거나, 엔진 모니터링 시스템(7)에 의해 얻어지며 내연기관(3)의 작동상태를 특성화하는 또다른 측정값을 고려한 특수한 작동상태와 무관한 정보로 환산된다. 측정온도값은 예정된 한계치와 비교된다. 측정온도값이 한계치보다 작으면, 촉매 변환기(1)의 결함을 지시하는 메시지가 디스플레이에 전달된다.

Description

내연기관 배기 시스템내의 촉매 변환기의 촉매 활성도를 모니터링하는 방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 따른 방법을 적용하기 위한 내연기관, 배기 시스템 및 촉매 변환기를 가진 장치를 나타내는 개략도이고, 제2도, 3도는 온도 측정센서를 가진, 모니터링 가능한 촉매 변환기의 본 발명에 따른 실시예이다.

Claims (15)

  1. 내연기관(3)의 작동중에 엔진 모니터링 시스템(7)에 의해 a) 촉매 변환기(1)에 설치된 적어도 2개의 온도 측정센서(4, 5, 6)에 의해 발생된 신호로부터 측정온도값을 유도하는 단계, b) 측정온도값을 장시간동안 관찰하여 평균값을 유도하는 단계, c) 평균값을 예정된 한계치와 비교함으로써 촉매 활성도를 검출하고 평균값이 한계치보다 작은 경우 메시지를 전달하는 단계를 포함하는 주기적으로 반복되는 측정에 의해 내연기관(3)의 배기 시스템(2)내에서 배기가스가 흐르는 촉매 변환기(1)의 촉매 활성도를 모니터링하는 방법.
  2. 제1항에 있어서, 장시간은 적어도 약 10시간, 바람직하게는 약 100 내지 1000 시간이며, 이 시간 중에는 내연기관(3)이 작동중인 것을 특징으로 하는 방법.
  3. 제1항 또는 2항에 있어서, a) 장시간보다 짧은 시간간격 동안 측정온도값을 주기적으로 유도하여 엔진 모니터링 시스템(7)에 속한 다수 채널-분석기의 메모리내에 저장하고, b) 장시간의 경과후 메모리의 내용을 꺼내 평균값을 유도하며, c) 메모리를 소거하는 것을 특징으로 하는 방법.
  4. 제1항 또는 2항에 있어서, 측정온도값을 장시간에 걸쳐 적분하여 평균값을 유도하는 것을 특징으로 하는 방법.
  5. 제1항 내지 4항중 어느 한 항에 있어서, a) 내연기관(3)의 작동중에 내연기관(3)의 작동상태를 특성화하는 또다른 측정값을 유도하고, b) 장시간에 걸쳐 또다른 측정값을 관찰하여 또다른 평균값을 유도하며 c) 또다른 평균값을 고려해서 한계치를 측정하는 것을 특징으로 하는 방법.
  6. 제5항에 있어서, a) 또다른 측정값을 주기적으로 저장시켜 다차원 다수 채널-분석기에 기억시키고, b) 장기산의 경과후 다차원 다수 채널-분석기의 내용을 꺼내 또다른 평균값을 형성하며, c) 다차원 다수 채널-분석기를 소거하는 것을 특징으로 하는 방법.
  7. 제6항에 있어서, 측정온도값을 또다른 측정값과 함께 주기적으로 저장시켜 다차원 다수 채널-분석기에 기억시키는 것을 특징으로 하는 방법.
  8. 내연기관(3)의 작동중에 엔진 모니터링 시스템(7)에 의해 a) 촉매 변환기(1)에 설치된 적어도 2개의 온도 측정센서(4, 5, 6)에 의해 발생된 신호로부터 측정온도값을 유도하는 단계, b) 내연기관(3)의 작동을 특성화시키는 또다른 측정값을 유도하는 단계, c) 또다른 측정값으로부터 온도 한계치를 측정하는 단계, d) 측정온도값과 온도 한계치를 비교함으로써 활성도를 측정하며, 측정온도값이 온도 한계치보다 작은 경우 메시지를 전달하는 단계를 포함하는 주기적으로 반복되는 측정에 의해 내연기관(3)의 배기 시스템(2)내에서 배기가스가 흐르는 촉매 변환기(1)의 촉매 활성도르 모니터링하는 방법.
  9. 제8항에 있어서, 온도 한계치를 측정하기 위해 또다른 측정값 외에 적어도 하나의 보다 이전의 측정에서 검출된 측정온도값을 사용하는 것을 특징으로 하는 방법.
  10. 제9항에 있어서, 장시간에 걸쳐 활성도를 저장시켜 온도 한계치의 유도에 고려하는 것을 특징으로 하는 방법.
  11. 제8항 내지 10항중 어느 한 항에 있어서, 측정온도값이 2개의 온도 측정센서(4, 5, 6)에 의해 측정되는 온도의 차에 상응하는 것을 특징으로 하는 방법.
  12. 제8항 내지 11항중 어느 한 항에 있어서, a) 적어도 한 신호의 시간 미분값을 형성하고, b) 시간이 미분값이 0이 아닌 경우에 측정을 중지하는 것을 특징으로 하는 방법.
  13. 제8항 내지 10항중 어느 한 항에 있어서, a) 제1온도측정센서(4) 신호의 급변동이 모니터링 되고, b) 급변동의 발생시 제2온도측정센서(5)의 신호를 단시간 동안 관찰하고, c) 제2온도측정센서(5) 신호의 시간적 변동으로부터 측정온도값을 유도하는 것을 특징으로 하는 방법.
  14. 제13항에 있어서, 단시간 최대 약 3초, 바람직하게는 약 1초 내지 2초인 것을 특징으로 하는 방법.
  15. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019930700574A 1990-08-28 1993-02-26 Monitoring of catalytic activity of a catalyst in the exhaust gas system of an internal combustion engine KR100196611B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4027207A DE4027207A1 (de) 1990-08-28 1990-08-28 Ueberwachung der katalytischen aktivitaet eines katalysators im abgassystem einer brennkraftmaschine
DEP4027207.9 1990-08-28
PCT/EP1991/001582 WO1992003642A1 (de) 1990-08-28 1991-08-20 Überwachung der katalytischen aktivität eines katalysators im abgassystem einer brennkraftmaschine

Publications (2)

Publication Number Publication Date
KR930701685A true KR930701685A (ko) 1993-06-12
KR100196611B1 KR100196611B1 (en) 1999-06-15

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ID=6413084

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Application Number Title Priority Date Filing Date
KR1019930700574A KR100196611B1 (en) 1990-08-28 1993-02-26 Monitoring of catalytic activity of a catalyst in the exhaust gas system of an internal combustion engine

Country Status (9)

Country Link
US (2) US5339628A (ko)
EP (1) EP0545974B1 (ko)
JP (1) JP2523461B2 (ko)
KR (1) KR100196611B1 (ko)
BR (1) BR9106810A (ko)
DE (2) DE4027207A1 (ko)
ES (1) ES2048597T3 (ko)
RU (1) RU2076930C1 (ko)
WO (1) WO1992003642A1 (ko)

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US5428956A (en) 1995-07-04
RU2076930C1 (ru) 1997-04-10
BR9106810A (pt) 1993-07-06
KR100196611B1 (en) 1999-06-15
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US5339628A (en) 1994-08-23
DE59100960D1 (de) 1994-03-10
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