JP4668312B2 - 排気圧力センサの故障診断装置 - Google Patents
排気圧力センサの故障診断装置 Download PDFInfo
- Publication number
- JP4668312B2 JP4668312B2 JP2008251977A JP2008251977A JP4668312B2 JP 4668312 B2 JP4668312 B2 JP 4668312B2 JP 2008251977 A JP2008251977 A JP 2008251977A JP 2008251977 A JP2008251977 A JP 2008251977A JP 4668312 B2 JP4668312 B2 JP 4668312B2
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- Prior art keywords
- exhaust
- pressure sensor
- determination
- threshold value
- exhaust pressure
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- 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D41/222—Safety or indicating devices for abnormal conditions relating to the failure of sensors or parameter detection devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D41/1448—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an exhaust gas pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/45—Sensors specially adapted for EGR systems
- F02M26/46—Sensors specially adapted for EGR systems for determining the characteristics of gases, e.g. composition
- F02M26/47—Sensors specially adapted for EGR systems for determining the characteristics of gases, e.g. composition the characteristics being temperatures, pressures or flow rates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/49—Detecting, diagnosing or indicating an abnormal function of the EGR system
-
- 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
-
- 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
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/08—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a pressure sensor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/70—Input parameters for engine control said parameters being related to the vehicle exterior
- F02D2200/703—Atmospheric pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D41/0047—Controlling exhaust gas recirculation [EGR]
- F02D41/005—Controlling exhaust gas recirculation [EGR] according to engine operating conditions
- F02D41/0055—Special engine operating conditions, e.g. for regeneration of exhaust gas treatment apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/02—EGR systems specially adapted for supercharged engines
- F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
- F02M26/05—High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Analytical Chemistry (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Measuring Fluid Pressure (AREA)
Description
なお上記所定低負荷運転状態は機関停止状態を含むものとする。
[第1の実施形態]
図1は本発明の一実施形態にかかる内燃機関及びその制御装置の構成を示す図である。内燃機関(以下単に「エンジン」という)1は、燃焼室内に燃料を直接噴射するディーゼルエンジンであり、各気筒に燃料噴射弁16が設けられている。燃料噴射弁16は、電子制御ユニット(以下「ECU」という)20に電気的に接続されており、燃料噴射弁16の開弁時間及び開弁時期は、ECU20により制御される。
ステップS10では、診断終了フラグFDENDが「1」であるか否かを判別する。診断終了フラグFDENDは、後述するステップS16,S24またはS32で「1」に設定されるフラグであり、最初はステップS10の答は否定(NO)となり、ステップS11に進む。
本実施形態は、第1の実施形態における第1判定閾値DPDTH1及び第2判定閾値DPDTH2を、EGR弁の弁開度指令値LCMD及び大気圧PAに応じて設定するようにしたものである。本実施形態は、以下に説明する点以外は第1の実施形態と同一である。
DPDTH1=DTDTH1B×KEGR×KPA (1)
DPDTH2=DTDTH2B×KEGR×KPA (2)
2 吸気通路
5 排気通路
6 排気還流通路
7 排気還流制御弁
20 電子制御ユニット(第1判定手段、第2判定手段、最終判定手段、閾値設定手段)
21 排気圧力センサ
22 大気圧力センサ(大気圧検出手段)
Claims (1)
- 内燃機関の排気通路と吸気通路とを接続する排気還流通路内の排気圧力を検出する排気圧力センサの故障診断装置において、
大気圧を検出する大気圧検出手段と、
前記機関が所定低負荷運転状態にあり、かつ前記排気圧力センサにより検出される排気圧力と大気圧との差が第1判定閾値以下であるとき、前記排気圧力センサが正常であると仮判定する第1判定手段と、
前記機関が所定高負荷運転状態にあり、かつ前記排気圧力センサにより検出される排気圧力と大気圧との差が第2判定閾値以上であるとき、前記排気圧力センサが正常であると仮判定する第2判定手段と、
前記第1及び第2判定手段による仮判定の結果が何れも正常である場合に、前記排気圧力センサが正常であると判定する最終判定手段とを備え、
前記排気還流通路には排気還流量を制御する排気還流制御弁が設けられ、前記排気圧力センサは、前記排気還流通路の前記排気還流制御弁より上流側に配置されており、
前記大気圧及び前記排気還流制御弁の開度に応じて前記第1判定閾値及び第2判定閾値を設定する閾値設定手段をさらに備え、
該閾値設定手段は、前記大気圧が低下するほど前記第1判定閾値及び第2判定閾値が減少し、かつ前記排気還流制御弁の開度が増加するほど前記第1判定閾値及び第2判定閾値が減少するように、前記第1判定閾値及び第2判定閾値を設定することを特徴とする排気圧力センサの故障診断装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008251977A JP4668312B2 (ja) | 2008-09-30 | 2008-09-30 | 排気圧力センサの故障診断装置 |
EP09169732A EP2169199B1 (en) | 2008-09-30 | 2009-09-08 | Failure diagnosis apparatus for exhaust pressure sensor |
AT09169732T ATE539252T1 (de) | 2008-09-30 | 2009-09-08 | Fehlerdiagnosevorrichtung für einen abgasdrucksensor |
US12/566,257 US8190397B2 (en) | 2008-09-30 | 2009-09-24 | Failure diagnosis apparatus for exhaust pressure sensor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008251977A JP4668312B2 (ja) | 2008-09-30 | 2008-09-30 | 排気圧力センサの故障診断装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2010084543A JP2010084543A (ja) | 2010-04-15 |
JP4668312B2 true JP4668312B2 (ja) | 2011-04-13 |
Family
ID=41210445
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008251977A Expired - Fee Related JP4668312B2 (ja) | 2008-09-30 | 2008-09-30 | 排気圧力センサの故障診断装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US8190397B2 (ja) |
EP (1) | EP2169199B1 (ja) |
JP (1) | JP4668312B2 (ja) |
AT (1) | ATE539252T1 (ja) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6228763B2 (ja) * | 2013-07-03 | 2017-11-08 | 日野自動車株式会社 | 異常判定システム及び異常判定方法 |
DE102013218612A1 (de) * | 2013-09-17 | 2015-03-19 | Robert Bosch Gmbh | Kraftfahrzeug-Abgasrückführsystem mit einer Differenzdruckmesseinheit sowie Verfahren zum Überprüfen einer Funktionsfähigkeit der Differenzdruckmesseinheit |
KR101567160B1 (ko) * | 2013-12-17 | 2015-11-06 | 현대자동차주식회사 | 배기 압력 센서 정합성 진단 장치 및 방법 |
FR3017902B1 (fr) * | 2014-02-27 | 2016-03-25 | Continental Automotive France | Procede de determination de la pression atmospherique lors du fonctionnement, dans un etat de charge partielle, d'un moteur turbocompresse |
US11932080B2 (en) | 2020-08-20 | 2024-03-19 | Denso International America, Inc. | Diagnostic and recirculation control systems and methods |
US11813926B2 (en) | 2020-08-20 | 2023-11-14 | Denso International America, Inc. | Binding agent and olfaction sensor |
US11881093B2 (en) | 2020-08-20 | 2024-01-23 | Denso International America, Inc. | Systems and methods for identifying smoking in vehicles |
US12017506B2 (en) | 2020-08-20 | 2024-06-25 | Denso International America, Inc. | Passenger cabin air control systems and methods |
US11636870B2 (en) | 2020-08-20 | 2023-04-25 | Denso International America, Inc. | Smoking cessation systems and methods |
US11760169B2 (en) | 2020-08-20 | 2023-09-19 | Denso International America, Inc. | Particulate control systems and methods for olfaction sensors |
US11828210B2 (en) | 2020-08-20 | 2023-11-28 | Denso International America, Inc. | Diagnostic systems and methods of vehicles using olfaction |
US11760170B2 (en) | 2020-08-20 | 2023-09-19 | Denso International America, Inc. | Olfaction sensor preservation systems and methods |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06167236A (ja) * | 1992-11-30 | 1994-06-14 | Mazda Motor Corp | 圧力センサの故障検出装置 |
JPH09144609A (ja) * | 1995-11-21 | 1997-06-03 | Unisia Jecs Corp | 内燃機関の排気還流装置の故障診断装置 |
JPH09268939A (ja) * | 1996-03-29 | 1997-10-14 | Suzuki Motor Corp | 圧力センサの故障診断制御装置 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4306139B2 (ja) * | 2001-03-28 | 2009-07-29 | トヨタ自動車株式会社 | 圧力センサの異常検出装置 |
US6659095B2 (en) * | 2001-06-19 | 2003-12-09 | Ford Global Technologies, Llc | Diagnosis system for upstream gauge sensor, downstream absolute pressure sensor |
US6850833B1 (en) * | 2003-11-03 | 2005-02-01 | Cummins, Inc. | System for diagnosing delta pressure sensor operation |
-
2008
- 2008-09-30 JP JP2008251977A patent/JP4668312B2/ja not_active Expired - Fee Related
-
2009
- 2009-09-08 AT AT09169732T patent/ATE539252T1/de active
- 2009-09-08 EP EP09169732A patent/EP2169199B1/en not_active Not-in-force
- 2009-09-24 US US12/566,257 patent/US8190397B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06167236A (ja) * | 1992-11-30 | 1994-06-14 | Mazda Motor Corp | 圧力センサの故障検出装置 |
JPH09144609A (ja) * | 1995-11-21 | 1997-06-03 | Unisia Jecs Corp | 内燃機関の排気還流装置の故障診断装置 |
JPH09268939A (ja) * | 1996-03-29 | 1997-10-14 | Suzuki Motor Corp | 圧力センサの故障診断制御装置 |
Also Published As
Publication number | Publication date |
---|---|
JP2010084543A (ja) | 2010-04-15 |
EP2169199A1 (en) | 2010-03-31 |
US20100082298A1 (en) | 2010-04-01 |
EP2169199B1 (en) | 2011-12-28 |
ATE539252T1 (de) | 2012-01-15 |
US8190397B2 (en) | 2012-05-29 |
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