JP5009597B2 - ワイドバンドのラムダゾンデにおけるガス組成の検知方法 - Google Patents
ワイドバンドのラムダゾンデにおけるガス組成の検知方法Info
- Publication number
- JP5009597B2 JP5009597B2 JP2006313748A JP2006313748A JP5009597B2 JP 5009597 B2 JP5009597 B2 JP 5009597B2 JP 2006313748 A JP2006313748 A JP 2006313748A JP 2006313748 A JP2006313748 A JP 2006313748A JP 5009597 B2 JP5009597 B2 JP 5009597B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- nernst voltage
- detection method
- pump current
- nernst
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000203 mixture Substances 0.000 title claims description 44
- 238000001514 detection method Methods 0.000 title claims description 14
- 238000005259 measurement Methods 0.000 claims description 24
- 238000009792 diffusion process Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 9
- 238000011156 evaluation Methods 0.000 claims description 7
- 230000035945 sensitivity Effects 0.000 claims description 6
- 230000002123 temporal effect Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 108
- 239000001301 oxygen Substances 0.000 description 31
- 229910052760 oxygen Inorganic materials 0.000 description 31
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 30
- 230000008859 change Effects 0.000 description 20
- 239000000446 fuel Substances 0.000 description 16
- 238000002485 combustion reaction Methods 0.000 description 14
- 239000001257 hydrogen Substances 0.000 description 7
- 229910052739 hydrogen Inorganic materials 0.000 description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 5
- 238000005086 pumping Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000007784 solid electrolyte Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- -1 oxygen ions Chemical class 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Images
Classifications
-
- 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
- G01N27/416—Systems
- G01N27/417—Systems using cells, i.e. more than one cell and probes with solid electrolytes
- G01N27/419—Measuring voltages or currents with a combination of oxygen pumping cells and oxygen concentration cells
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Molecular Biology (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Measuring Oxygen Concentration In Cells (AREA)
Description
本発明に基づく方法は、特に自動車の内燃機関の制御装置で、例えばプログラムコード或いは適当な電子回路の形で実現される。
ネルンスト電圧UNが低下されるや否や(図5c)、測定ガスチャンバー内の酸素の分圧PO2が引き上げられる。これによって分圧差ΔPO2が減少され、その結果H2だけが測定ガスチャンバーの中へ拡散されることになる。このことが又負のポンプ電流を必要とする。従って、負の半波の中のこの負のポンプ電流はガス混合気の中のリーン成分を示している。
12…排気ガス
14…開口部
16…ポンプセル
18…測定ガスチャンバー
19…基準ガスチャンバー
20…ネルンストセル
21…制御装置
22…評価/制御回路
24…ヒーター
26…抵抗(R1)
I_Pump…ポンプ電流
λ…空気過剰率
UHeizer…ヒーター電圧
U_Nernst…ネルンスト電圧
U_Pump…ポンプ電圧
U_Ref…基準電圧(450mV)
U_Sonde…ゾンデの出力信号
Claims (8)
- 少なくとも一つの基準ガスチャンバーを有し、ネルンスト電圧を生成するネルンストセルと、少なくとも一つの測定ガスチャンバーを有するポンプセルであって、前記ネルンスト電圧に依存するポンプ電圧が印加されるポンプセルと、を備えたワイドバンドのラムダゾンデによる、前記測定ガスチャンバーに送り込まれる、拡散特性の異なる少なくとも二つのガスから成るガス混合気のガス組成の検知方法において、
前記ネルンスト電圧を時間的に変調すること、および
前記変調された前記ネルンスト電圧と同期的に変化するポンプ電流と、該ポンプ電流の変動の振幅とを評価し、該評価によって、前記ガス混合気のガス組成を検知すること、
を特徴とするガス組成の検知方法。 - 前記ポンプセルの前記測定ガスチャンバー内の空気過剰率が周期的に変化し、それによって前記少なくとも二つのガスに対する前記ラムダゾンデの感度もまた周期的に変化することを特徴とする請求項1に記載の検知方法。
- 前記ネルンスト電圧が時間的に正弦波形変調されることを特徴とする請求項1又は2に記載の検知方法。
- 前記ネルンスト電圧の変調が、前記空気過剰率λの時間的平均値が、前記測定ガスチャンバー内でλ=1に調節されるように行われることを特徴とする請求項3に記載の検知方法。
- 前記ネルンスト電圧が、1Hzから20HZまでの周波数で正弦波形変調され、その際変調された信号の振幅が25mVと450mVとの間であることを特徴とする請求項3又は4に記載の検知方法。
- 前記ネルンスト電圧が、5Hzの周波数で正弦波形変調され、その際変調された信号の振幅が100mVであることを特徴とする請求項3又は4に記載の検知方法。
- 前記ネルンスト電圧の変調の少なくとも二つの位相の下でのポンプ電流の平均変動からガス組成が判定され、測定されたポンプ電流が真のλ値に換算されることを特徴とする請求項3に記載の検知方法。
- 前記ネルンスト電圧の変調の位相90゜と270゜でのポンプ電流の平均変動からガス組成が判定され、測定されたポンプ電流が真のλ値に換算されることを特徴とする請求項3に記載の検知方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005056515A DE102005056515A1 (de) | 2005-11-28 | 2005-11-28 | Verfahren zur Erkennung der Diffusionsgaszusammensetzung in einer Breitband-Lambdasonde |
DE102005056515.8 | 2005-11-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007147615A JP2007147615A (ja) | 2007-06-14 |
JP5009597B2 true JP5009597B2 (ja) | 2012-08-22 |
Family
ID=38037702
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006313748A Expired - Fee Related JP5009597B2 (ja) | 2005-11-28 | 2006-11-21 | ワイドバンドのラムダゾンデにおけるガス組成の検知方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7744740B2 (ja) |
JP (1) | JP5009597B2 (ja) |
DE (1) | DE102005056515A1 (ja) |
Families Citing this family (44)
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US8029656B2 (en) * | 2003-01-30 | 2011-10-04 | Emisense Technologies Llc | System, apparatus, and method for measuring an ion concentration of a measured fluid |
US8892112B2 (en) | 2011-07-21 | 2014-11-18 | At&T Mobility Ii Llc | Selection of a radio access bearer resource based on radio access bearer resource historical information |
DE102008044310A1 (de) | 2008-12-03 | 2010-06-10 | Robert Bosch Gmbh | Verfahren zur Erkennung der Zusammensetzung eines Gasgemischs |
US8326319B2 (en) | 2009-01-23 | 2012-12-04 | At&T Mobility Ii Llc | Compensation of propagation delays of wireless signals |
US7938016B2 (en) * | 2009-03-20 | 2011-05-10 | Freescale Semiconductor, Inc. | Multiple layer strain gauge |
DE102009028237A1 (de) * | 2009-08-05 | 2011-02-17 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Regeneration eines Partikelfilters mit einer im Abgaskanal nachgeordneten Abgassonde |
US8224349B2 (en) | 2010-02-25 | 2012-07-17 | At&T Mobility Ii Llc | Timed fingerprint locating in wireless networks |
US8254959B2 (en) * | 2010-02-25 | 2012-08-28 | At&T Mobility Ii Llc | Timed fingerprint locating for idle-state user equipment in wireless networks |
US9053513B2 (en) | 2010-02-25 | 2015-06-09 | At&T Mobility Ii Llc | Fraud analysis for a location aware transaction |
US9008684B2 (en) | 2010-02-25 | 2015-04-14 | At&T Mobility Ii Llc | Sharing timed fingerprint location information |
US9196157B2 (en) | 2010-02-25 | 2015-11-24 | AT&T Mobolity II LLC | Transportation analytics employing timed fingerprint location information |
DE102010030117A1 (de) * | 2010-06-15 | 2011-12-15 | Robert Bosch Gmbh | Schaltungsanordnung zum Betreiben einer Gassonde |
US8447328B2 (en) | 2010-08-27 | 2013-05-21 | At&T Mobility Ii Llc | Location estimation of a mobile device in a UMTS network |
DE102010040821A1 (de) | 2010-09-15 | 2012-03-15 | Robert Bosch Gmbh | Verfahren zur Bestimmung einer Eigenschaften eines Gases in einem Messgasraum |
US9009629B2 (en) | 2010-12-01 | 2015-04-14 | At&T Mobility Ii Llc | Motion-based user interface feature subsets |
US8509806B2 (en) | 2010-12-14 | 2013-08-13 | At&T Intellectual Property I, L.P. | Classifying the position of a wireless device |
DE102011007332A1 (de) | 2011-04-13 | 2012-10-18 | Robert Bosch Gmbh | Verfahren zur Erfassung mindestens einer Eigenschaft eines Gases in einem Messgasraum |
US8612410B2 (en) | 2011-06-30 | 2013-12-17 | At&T Mobility Ii Llc | Dynamic content selection through timed fingerprint location data |
US9462497B2 (en) | 2011-07-01 | 2016-10-04 | At&T Mobility Ii Llc | Subscriber data analysis and graphical rendering |
US8761799B2 (en) | 2011-07-21 | 2014-06-24 | At&T Mobility Ii Llc | Location analytics employing timed fingerprint location information |
US9519043B2 (en) | 2011-07-21 | 2016-12-13 | At&T Mobility Ii Llc | Estimating network based locating error in wireless networks |
US8897802B2 (en) | 2011-07-21 | 2014-11-25 | At&T Mobility Ii Llc | Selection of a radio access technology resource based on radio access technology resource historical information |
US8666390B2 (en) | 2011-08-29 | 2014-03-04 | At&T Mobility Ii Llc | Ticketing mobile call failures based on geolocated event data |
US8923134B2 (en) | 2011-08-29 | 2014-12-30 | At&T Mobility Ii Llc | Prioritizing network failure tickets using mobile location data |
DE102011084734A1 (de) | 2011-10-18 | 2013-04-18 | Robert Bosch Gmbh | Verfahren zum Abgleichen eines Gassensors |
US8762048B2 (en) | 2011-10-28 | 2014-06-24 | At&T Mobility Ii Llc | Automatic travel time and routing determinations in a wireless network |
US8909247B2 (en) | 2011-11-08 | 2014-12-09 | At&T Mobility Ii Llc | Location based sharing of a network access credential |
US8970432B2 (en) | 2011-11-28 | 2015-03-03 | At&T Mobility Ii Llc | Femtocell calibration for timing based locating systems |
US9026133B2 (en) | 2011-11-28 | 2015-05-05 | At&T Mobility Ii Llc | Handset agent calibration for timing based locating systems |
DE102011087310B3 (de) * | 2011-11-29 | 2012-10-18 | Continental Automotive Gmbh | Verfahren und Vorrichtung zum Betreiben einer linearen Lambdasonde |
US8925104B2 (en) | 2012-04-13 | 2014-12-30 | At&T Mobility Ii Llc | Event driven permissive sharing of information |
US8929827B2 (en) | 2012-06-04 | 2015-01-06 | At&T Mobility Ii Llc | Adaptive calibration of measurements for a wireless radio network |
US9094929B2 (en) | 2012-06-12 | 2015-07-28 | At&T Mobility Ii Llc | Event tagging for mobile networks |
US9326263B2 (en) | 2012-06-13 | 2016-04-26 | At&T Mobility Ii Llc | Site location determination using crowd sourced propagation delay and location data |
US9046592B2 (en) | 2012-06-13 | 2015-06-02 | At&T Mobility Ii Llc | Timed fingerprint locating at user equipment |
US8938258B2 (en) | 2012-06-14 | 2015-01-20 | At&T Mobility Ii Llc | Reference based location information for a wireless network |
US8897805B2 (en) | 2012-06-15 | 2014-11-25 | At&T Intellectual Property I, L.P. | Geographic redundancy determination for time based location information in a wireless radio network |
US9408174B2 (en) | 2012-06-19 | 2016-08-02 | At&T Mobility Ii Llc | Facilitation of timed fingerprint mobile device locating |
US8892054B2 (en) | 2012-07-17 | 2014-11-18 | At&T Mobility Ii Llc | Facilitation of delay error correction in timing-based location systems |
US9351223B2 (en) | 2012-07-25 | 2016-05-24 | At&T Mobility Ii Llc | Assignment of hierarchical cell structures employing geolocation techniques |
DE102012219282A1 (de) * | 2012-10-23 | 2014-04-24 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Diagnose des Luftreferenzkanals einer Breitband-Lambdasonde |
DE102013212288A1 (de) | 2013-06-26 | 2014-12-31 | Robert Bosch Gmbh | Verfahren zum Betrieb eines Sensorelements und Sensorvorrichtung |
US9351111B1 (en) | 2015-03-06 | 2016-05-24 | At&T Mobility Ii Llc | Access to mobile location related information |
US10516972B1 (en) | 2018-06-01 | 2019-12-24 | At&T Intellectual Property I, L.P. | Employing an alternate identifier for subscription access to mobile location information |
Family Cites Families (13)
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DE19805023A1 (de) * | 1998-02-09 | 1999-08-12 | Bosch Gmbh Robert | Elektrochemischer Meßfühler |
DE19838466A1 (de) * | 1998-08-25 | 2000-03-02 | Bosch Gmbh Robert | Verfahren zum Ansteuern eines Meßfühlers zum Bestimmen einer Sauerstoffkonzentration in einem Gasgemisch |
DE19912102C2 (de) | 1999-03-18 | 2002-09-05 | Bosch Gmbh Robert | Elektrochemischer Gassensor |
DE19956822B4 (de) * | 1999-11-25 | 2004-01-29 | Siemens Ag | Verfahren zur Bestimmung der NOx-Konzentration |
DE10216724C1 (de) * | 2002-04-16 | 2003-10-09 | Bosch Gmbh Robert | Verfahren zum Betreiben einer Breitband-Lamdasonde |
DE10221392B4 (de) * | 2002-05-14 | 2004-07-22 | Siemens Ag | Verfahren und Vorrichtung zur Messung einer Gas-Konzentration |
DK1494025T3 (da) * | 2003-07-03 | 2007-09-17 | Sulzer Hexis Ag | Test af en lambdasondes funktionsegnethed |
DE10360775A1 (de) * | 2003-12-23 | 2005-07-28 | Robert Bosch Gmbh | Sensorvorrichtung für verbrennungsmotorische Abgase und Betriebs- und Auswerteverfahren |
DE102004016986B3 (de) * | 2004-04-02 | 2005-10-06 | Siemens Ag | Vorrichtung und Verfahren zur Messung mehrerer Abgasbestandteile |
DE102005012943A1 (de) * | 2005-03-21 | 2006-09-28 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Brennkraftmaschine und Vorrichtung zur Durchführung des Verfahrens |
DE102005050269A1 (de) * | 2005-06-22 | 2007-01-04 | Robert Bosch Gmbh | Verfahren zur Bestimmung der Lambda-Werte mit einer Breitband-Lambda-Sonde |
-
2005
- 2005-11-28 DE DE102005056515A patent/DE102005056515A1/de not_active Withdrawn
-
2006
- 2006-11-21 JP JP2006313748A patent/JP5009597B2/ja not_active Expired - Fee Related
- 2006-11-28 US US11/605,988 patent/US7744740B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE102005056515A1 (de) | 2007-05-31 |
US7744740B2 (en) | 2010-06-29 |
US20070119719A1 (en) | 2007-05-31 |
JP2007147615A (ja) | 2007-06-14 |
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