KR100754535B1 - 질소산화물의 농도를 결정하는 방법 - Google Patents
질소산화물의 농도를 결정하는 방법 Download PDFInfo
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- KR100754535B1 KR100754535B1 KR1020027006735A KR20027006735A KR100754535B1 KR 100754535 B1 KR100754535 B1 KR 100754535B1 KR 1020027006735 A KR1020027006735 A KR 1020027006735A KR 20027006735 A KR20027006735 A KR 20027006735A KR 100754535 B1 KR100754535 B1 KR 100754535B1
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- nox concentration
- measuring
- nox
- air ratio
- measuring cell
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/403—Cells and electrode assemblies
- G01N27/406—Cells and probes with solid electrolytes
- G01N27/407—Cells and probes with solid electrolytes for investigating or analysing gases
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/403—Cells and electrode assemblies
- G01N27/406—Cells and probes with solid electrolytes
- G01N27/407—Cells and probes with solid electrolytes for investigating or analysing gases
- G01N27/4073—Composition or fabrication of the solid electrolyte
- G01N27/4074—Composition or fabrication of the solid electrolyte for detection of gases other than oxygen
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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Abstract
Description
Claims (5)
- 내연 기관으로부터의 배출 가스 내의 NOx 농도를 측정 센서에 의해 결정하기 위한 방법으로서, 상기 측정 센서는- 상기 배출 가스의 일부가 도입되는 제 1 측정 셀로서, 상기 제 1 측정 셀 내에서 산소 이온 펌프 전류에 의해 제 1 산소 농도가 성립되는 제 1 측정 셀, 및- 상기 제 1 측정 셀에 연결되는 제 2 측정 셀로서, 상기 제 2 측정 셀 내에서 제 2 산소 농도가 성립되는 제 2 측정 셀을 구비하며,- 상기 NOx 농도는 상기 제 2 측정 셀에서 측정되는 방법에 있어서,a) 상기 배출 가스의 λ함수 값인 공기비 신호가 상기 산소 이온 펌프 전류로부터 결정되는 단계,b) 상기 측정된 NOx 농도와 실제 NOx 농도와의 편차를 나타내는 측정 에러가 상기 공기비 신호로부터 결정되는 단계, 및c) 상기 측정된 NOx 농도가 상기 측정 에러에 의해 보정되는 단계로 이루어지는 것을 특징으로 하는,NOx 농도를 결정하는 방법.
- 제 1 항에 있어서,상기 공기비 신호와 상기 측정 에러 사이의 관계가 교정 측정에서 결정되며,상기 측정 센서는 여러 가스 혼합물에 노출되고, 상기 측정 에러는 특성다이어그램(characteristic diagram), 특성 곡선(characteristic curve) 또는 함수 관계의 형태로 기록되고 표현되며, 적어도 λ값 및 NOx 농도가 상기 가스 혼합물에서 변경되는 것을 특징으로 하는,NOx 농도를 결정하는 방법.
- 제 1 항 또는 제 2 항에 있어서,상기 단계 c)에서의 보정은 곱셈/덧셈 및/또는 뺄셈 계산 과정에 의하는 것을 특징으로 하는,NOx 농도를 결정하는 방법.
- 제 1 항 또는 제 2 항에 있어서,상기 단계 b)에서, 상기 공기비 신호와 상기 측정 에러 사이의 관계로서 실질적으로 선형 함수가 사용되는 것을 특징으로 하는,NOx 농도를 결정하는 방법.
- 제 1 항 또는 제 2 항에 있어서,상기 단계 a)에서, 상기 산소 이온 펌프 전류로부터 상기 공기비 신호를 결정하는데 특성 곡선 또는 특성 다이어그램이 사용되는 것을 특징으로 하는,NOx 농도를 결정하는 방법.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19956822A DE19956822B4 (de) | 1999-11-25 | 1999-11-25 | Verfahren zur Bestimmung der NOx-Konzentration |
DE19956822.7 | 1999-11-25 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20020060760A KR20020060760A (ko) | 2002-07-18 |
KR100754535B1 true KR100754535B1 (ko) | 2007-09-04 |
Family
ID=7930341
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020027006735A KR100754535B1 (ko) | 1999-11-25 | 2000-11-22 | 질소산화물의 농도를 결정하는 방법 |
Country Status (6)
Country | Link |
---|---|
US (1) | US6699383B2 (ko) |
EP (1) | EP1232391A2 (ko) |
JP (1) | JP4746239B2 (ko) |
KR (1) | KR100754535B1 (ko) |
DE (1) | DE19956822B4 (ko) |
WO (1) | WO2001038864A2 (ko) |
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-
2000
- 2000-11-22 JP JP2001540362A patent/JP4746239B2/ja not_active Expired - Lifetime
- 2000-11-22 EP EP00989790A patent/EP1232391A2/de not_active Withdrawn
- 2000-11-22 WO PCT/DE2000/004128 patent/WO2001038864A2/de not_active Application Discontinuation
- 2000-11-22 KR KR1020027006735A patent/KR100754535B1/ko active IP Right Grant
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2002
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Also Published As
Publication number | Publication date |
---|---|
US20020179458A1 (en) | 2002-12-05 |
US6699383B2 (en) | 2004-03-02 |
WO2001038864A3 (de) | 2002-02-14 |
EP1232391A2 (de) | 2002-08-21 |
JP4746239B2 (ja) | 2011-08-10 |
JP2003515166A (ja) | 2003-04-22 |
DE19956822A1 (de) | 2001-06-07 |
DE19956822B4 (de) | 2004-01-29 |
KR20020060760A (ko) | 2002-07-18 |
WO2001038864A2 (de) | 2001-05-31 |
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