JP4715927B2 - 排ガスセンサの劣化検出装置 - Google Patents
排ガスセンサの劣化検出装置 Download PDFInfo
- Publication number
- JP4715927B2 JP4715927B2 JP2009007917A JP2009007917A JP4715927B2 JP 4715927 B2 JP4715927 B2 JP 4715927B2 JP 2009007917 A JP2009007917 A JP 2009007917A JP 2009007917 A JP2009007917 A JP 2009007917A JP 4715927 B2 JP4715927 B2 JP 4715927B2
- Authority
- JP
- Japan
- Prior art keywords
- heater
- resistance
- temperature
- exhaust gas
- sensor
- 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
- 230000006866 deterioration Effects 0.000 title claims description 97
- 238000001514 detection method Methods 0.000 title claims description 81
- 239000000498 cooling water Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 93
- 239000001301 oxygen Substances 0.000 description 24
- 229910052760 oxygen Inorganic materials 0.000 description 24
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 19
- 239000007784 solid electrolyte Substances 0.000 description 18
- 238000000034 method Methods 0.000 description 15
- 238000005192 partition Methods 0.000 description 13
- BIDUTRWDQRUKTQ-UHFFFAOYSA-N CC1CNNC1C1CCCN(C1)c1ccc2ncnc(N)c2n1 Chemical compound CC1CNNC1C1CCCN(C1)c1ccc2ncnc(N)c2n1 BIDUTRWDQRUKTQ-UHFFFAOYSA-N 0.000 description 10
- 230000005856 abnormality Effects 0.000 description 8
- RSASMEONNPBNKR-UHFFFAOYSA-N n-[3-(4-aminoquinazolin-6-yl)-5-fluorophenyl]-3-(dimethylamino)propanamide Chemical compound CN(C)CCC(=O)NC1=CC(F)=CC(C=2C=C3C(N)=NC=NC3=CC=2)=C1 RSASMEONNPBNKR-UHFFFAOYSA-N 0.000 description 7
- 239000000284 extract Substances 0.000 description 5
- -1 oxygen ions Chemical class 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229910000416 bismuth oxide Inorganic materials 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 1
- 229910000420 cerium oxide Inorganic materials 0.000 description 1
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Combined Controls Of Internal Combustion Engines (AREA)
Description
2,3 隔壁
5 拡散律速壁
8 酸素ポンプ電極
9 排ガスチャンバ
10 排ガスセンサ劣化検出ECU
11 素子抵抗センサ
12 ヒータ電流センサ
13 バッテリ電圧センサ
14 素子温度−素子抵抗MAP
15 ヒータ温度−ヒータ抵抗MAP
51 ソークタイマ
100 劣化検出装置
Claims (3)
- 車両の各部位に備えられた温度センサにより検出された一以上の温度に基づき、排ガスセンサを加熱するヒータの抵抗値を推定する第二ヒータ抵抗推定手段と、
前記ヒータのヒータ電流に基づき該ヒータの抵抗値を算出するヒータ抵抗算出手段と、
前記第二ヒータ抵抗推定手段と前記ヒータ抵抗算出手段により推定された二つの抵抗値を比較して当該排ガスセンサが劣化したか否かを判定する劣化判定手段と、
を有することを特徴とする排ガスセンサの劣化検出装置。 - 前記ヒータの温度と前記ヒータの抵抗値との関係を記録したヒータ温度−ヒータ抵抗マップ、を有し、
前記第二ヒータ抵抗推定手段は、ソーク時間が所定以上となった場合、車両の各部位の前記温度センサにより検出された一以上の温度に基づき、前記ヒータ温度を推定し、
推定された前記ヒータ温度に基づき、前記ヒータ温度−ヒータ抵抗マップから前記ヒータの抵抗を抽出する、
ことを特徴とする請求項1記載の排ガスセンサの劣化検出装置。 - 前記第二ヒータ抵抗推定手段は、吸気温、A/Fセンサヒータの温度、サブO2センサヒータの温度、外気温又はエンジン冷却水温、のいずれか一以上の温度に基づき、前記ヒータの抵抗値を推定する、
ことを特徴とする請求項1又は2記載の排ガスセンサの劣化検出装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009007917A JP4715927B2 (ja) | 2009-01-16 | 2009-01-16 | 排ガスセンサの劣化検出装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009007917A JP4715927B2 (ja) | 2009-01-16 | 2009-01-16 | 排ガスセンサの劣化検出装置 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005011572A Division JP4375236B2 (ja) | 2005-01-19 | 2005-01-19 | 排ガスセンサの劣化検出装置 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010230617A Division JP4894948B2 (ja) | 2010-10-13 | 2010-10-13 | 排ガスセンサの劣化検出装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2009074559A JP2009074559A (ja) | 2009-04-09 |
JP4715927B2 true JP4715927B2 (ja) | 2011-07-06 |
Family
ID=40609740
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2009007917A Expired - Fee Related JP4715927B2 (ja) | 2009-01-16 | 2009-01-16 | 排ガスセンサの劣化検出装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4715927B2 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8401766B2 (en) | 2009-12-09 | 2013-03-19 | Toyota Jidosha Kabushiki Kaisha | Inter-cylinder air-fuel ratio imbalance determination apparatus for internal combustion engine |
JP4968492B2 (ja) * | 2009-12-18 | 2012-07-04 | トヨタ自動車株式会社 | 内燃機関の空燃比気筒間インバランス判定装置 |
US11935338B2 (en) | 2018-07-13 | 2024-03-19 | Hitachi Astemo, Ltd. | Automotive electronic control unit |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001330580A (ja) * | 2000-05-19 | 2001-11-30 | Unisia Jecs Corp | 酸素濃度検出装置のヒータ診断装置 |
JP2001349864A (ja) * | 2000-06-07 | 2001-12-21 | Mitsubishi Electric Corp | 排気ガスセンサ用温度検出装置 |
JP2002333417A (ja) * | 2001-05-08 | 2002-11-22 | Yazaki Corp | 酸素センサ用ヒータ自己診断装置 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08110320A (ja) * | 1994-10-12 | 1996-04-30 | Unisia Jecs Corp | 酸素センサ用ヒータの診断装置 |
JPH109029A (ja) * | 1996-06-21 | 1998-01-13 | Hitachi Ltd | エンジン制御装置 |
JPH10206371A (ja) * | 1997-01-17 | 1998-08-07 | Denso Corp | 酸素センサの異常検出装置 |
-
2009
- 2009-01-16 JP JP2009007917A patent/JP4715927B2/ja not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001330580A (ja) * | 2000-05-19 | 2001-11-30 | Unisia Jecs Corp | 酸素濃度検出装置のヒータ診断装置 |
JP2001349864A (ja) * | 2000-06-07 | 2001-12-21 | Mitsubishi Electric Corp | 排気ガスセンサ用温度検出装置 |
JP2002333417A (ja) * | 2001-05-08 | 2002-11-22 | Yazaki Corp | 酸素センサ用ヒータ自己診断装置 |
Also Published As
Publication number | Publication date |
---|---|
JP2009074559A (ja) | 2009-04-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4375236B2 (ja) | 排ガスセンサの劣化検出装置 | |
JP4592570B2 (ja) | センサ素子劣化判定装置およびセンサ素子劣化判定方法 | |
US7872480B2 (en) | Gas sensor control apparatus | |
JP5074358B2 (ja) | ガスセンサ制御装置、及び窒素酸化物濃度検出方法 | |
US20170219516A1 (en) | Gas concentration detection apparatus | |
US8775053B2 (en) | Control device for internal combustion engine | |
JP4742133B2 (ja) | 粒子状物質検出装置および粒子状物質検出方法 | |
EP2518481B1 (en) | Gas sensor apparatus and method for controlling the same | |
JP2011164087A (ja) | ガスセンサ制御装置及びガスセンサ制御方法 | |
JP2009192289A (ja) | ガス濃度検出装置 | |
JP4715927B2 (ja) | 排ガスセンサの劣化検出装置 | |
US9074975B2 (en) | Particulate matter detecting apparatus | |
JP2008233046A (ja) | センサ制御装置 | |
CN110578588B (zh) | NOx传感器控制装置和NOx传感器控制方法 | |
US20040089060A1 (en) | Fault detection system and method | |
JP4894948B2 (ja) | 排ガスセンサの劣化検出装置 | |
JP7125281B2 (ja) | アンモニア検出装置 | |
US20190136785A1 (en) | Control apparatus for exhaust gas sensor | |
JP6900937B2 (ja) | 制御装置 | |
JP2001317400A (ja) | 空燃比センサの活性判定装置 | |
JP5001086B2 (ja) | センサ制御装置 | |
JP2000002678A (ja) | ヒータのばらつき補正方法及びヒータのばらつき補正装置 | |
JP2020125959A (ja) | 粒子状物質検出センサ | |
JP2009085649A (ja) | ガスセンサの制御装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20090119 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20110301 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20110314 |
|
R151 | Written notification of patent or utility model registration |
Ref document number: 4715927 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R151 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140408 Year of fee payment: 3 |
|
LAPS | Cancellation because of no payment of annual fees |