JP7047742B2 - 状態推定装置 - Google Patents
状態推定装置 Download PDFInfo
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- JP7047742B2 JP7047742B2 JP2018232183A JP2018232183A JP7047742B2 JP 7047742 B2 JP7047742 B2 JP 7047742B2 JP 2018232183 A JP2018232183 A JP 2018232183A JP 2018232183 A JP2018232183 A JP 2018232183A JP 7047742 B2 JP7047742 B2 JP 7047742B2
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- rate
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- oxygen storage
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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
- F01N11/007—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring oxygen or air concentration downstream of the exhaust apparatus
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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
-
- 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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/101—Three-way catalysts
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- 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
- F02D41/021—Introducing corrections for particular conditions exterior to the engine
- F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
- F02D41/0295—Control according to the amount of oxygen that is stored on the exhaust gas treating apparatus
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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
- F01N2550/00—Monitoring or diagnosing the deterioration of exhaust systems
- F01N2550/02—Catalytic activity of catalytic converters
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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
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/14—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust gas
- F01N2900/1402—Exhaust gas composition
-
- 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
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/14—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust gas
- F01N2900/1411—Exhaust gas flow rate, e.g. mass flow rate or volumetric flow rate
-
- 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
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/16—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
- F01N2900/1624—Catalyst oxygen storage capacity
-
- 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
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/08—Exhaust gas treatment apparatus parameters
- F02D2200/0802—Temperature of the exhaust gas treatment apparatus
-
- 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
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/08—Exhaust gas treatment apparatus parameters
- F02D2200/0814—Oxygen storage amount
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Description
変化速度=(触媒理論等量比-流入等量比)×吸入空気流量×0.232×演算周期・・・・・(1)
限界増加速度=吸蔵速度係数×(触媒理論等量比-流入等量比)×(最大吸蔵酸素量-現在の酸素吸蔵量)×演算周期・・・・・(2)
限界減少速度=放出速度係数×(触媒理論等量比-流入等量比)×(現在の酸素吸蔵量)×演算周期・・・・・(3)
31:酸素吸蔵触媒
100:状態推定装置
110:速度算出部
120:限界算出部
130:吸蔵量更新部
Claims (4)
- 車両(MV)に設けられる酸素吸蔵触媒(31)の状態を推定する状態推定装置(100)であって、
前記酸素吸蔵触媒に流入する排出ガスの流量及び空燃比に基づいて、前記酸素吸蔵触媒における酸素吸蔵量の変化速度を算出する速度算出部(110)と、
前記変化速度についての限界値、である限界速度を算出する限界算出部(120)と、
前記変化速度及び前記限界速度に基づいて、前記酸素吸蔵量の推定値を更新する吸蔵量更新部(130)と、を備え、
前記吸蔵量更新部は、
前記変化速度が前記限界速度を超えない場合には、前記変化速度に基づいて前記推定値を更新し、
前記変化速度が前記限界速度を超える場合には、前記限界速度に基づいて前記推定値を更新し、
前記限界算出部は、
前記酸素吸蔵量が増加する速度についての前記限界速度である限界増加速度と、
前記酸素吸蔵量が減少する速度についての前記限界速度である限界減少速度と、をそれぞれ算出する状態推定装置。 - 前記酸素吸蔵量が大きいときほど、前記限界算出部によって算出される前記限界増加速度の絶対値が小さくなる、請求項1に記載の状態推定装置。
- 前記酸素吸蔵量が小さいときほど、前記限界算出部によって算出される前記限界減少速度の絶対値が小さくなる、請求項1に記載の状態推定装置。
- 前記酸素吸蔵触媒の温度が低いときほど、前記限界算出部によって算出される前記限界増加速度及び前記限界減少速度のうち、少なくとも一方の絶対値が小さくなる、請求項1乃至3のいずれか1項に記載の状態推定装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018232183A JP7047742B2 (ja) | 2018-12-12 | 2018-12-12 | 状態推定装置 |
DE112019006216.6T DE112019006216T5 (de) | 2018-12-12 | 2019-12-04 | Zustandsschätzvorrichtung |
PCT/JP2019/047483 WO2020121921A1 (ja) | 2018-12-12 | 2019-12-04 | 状態推定装置 |
CN201980082203.0A CN113195878B (zh) | 2018-12-12 | 2019-12-04 | 状态推断装置 |
US17/345,170 US11384677B2 (en) | 2018-12-12 | 2021-06-11 | State estimation apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018232183A JP7047742B2 (ja) | 2018-12-12 | 2018-12-12 | 状態推定装置 |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2020094524A JP2020094524A (ja) | 2020-06-18 |
JP2020094524A5 JP2020094524A5 (ja) | 2020-11-26 |
JP7047742B2 true JP7047742B2 (ja) | 2022-04-05 |
Family
ID=71076025
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2018232183A Active JP7047742B2 (ja) | 2018-12-12 | 2018-12-12 | 状態推定装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US11384677B2 (ja) |
JP (1) | JP7047742B2 (ja) |
CN (1) | CN113195878B (ja) |
DE (1) | DE112019006216T5 (ja) |
WO (1) | WO2020121921A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2024047839A1 (ja) * | 2022-09-01 | 2024-03-07 | 日産自動車株式会社 | 内燃機関の空燃比制御方法および装置 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000120475A (ja) | 1998-10-16 | 2000-04-25 | Nissan Motor Co Ltd | エンジンの排気浄化装置 |
JP2018162722A (ja) | 2017-03-27 | 2018-10-18 | 株式会社豊田中央研究所 | ディーゼルエンジンシステム |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5678402A (en) | 1994-03-23 | 1997-10-21 | Honda Giken Kogyo Kabushiki Kaisha | Air-fuel ratio control system for internal combustion engines and exhaust system temperature-estimating device applicable thereto |
JP3403801B2 (ja) * | 1994-03-23 | 2003-05-06 | 本田技研工業株式会社 | 内燃機関の排気系温度推定装置 |
US5842340A (en) * | 1997-02-26 | 1998-12-01 | Motorola Inc. | Method for controlling the level of oxygen stored by a catalyst within a catalytic converter |
US6499290B1 (en) * | 2000-02-03 | 2002-12-31 | Nissan Motor Co., Ltd. | Engine exhaust purification device |
JP3606211B2 (ja) * | 2000-02-22 | 2005-01-05 | 日産自動車株式会社 | エンジンの排気浄化装置 |
EP1183455B1 (en) * | 2000-02-24 | 2004-04-21 | Nissan Motor Company, Limited | Engine exhaust purification device |
JP3835140B2 (ja) * | 2000-08-30 | 2006-10-18 | 日産自動車株式会社 | エンジンの空燃比制御装置 |
JP3729083B2 (ja) * | 2001-04-27 | 2005-12-21 | 日産自動車株式会社 | エンジンの排気浄化装置 |
CN100538040C (zh) * | 2001-06-18 | 2009-09-09 | 丰田自动车株式会社 | 内燃机的空燃比控制装置 |
JP2003027932A (ja) * | 2001-07-18 | 2003-01-29 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
US7198952B2 (en) | 2001-07-18 | 2007-04-03 | Toyota Jidosha Kabushiki Kaisha | Catalyst deterioration detecting apparatus and method |
JP2005098205A (ja) | 2003-09-25 | 2005-04-14 | Toyota Motor Corp | 内燃機関の空燃比制御装置 |
JP4380574B2 (ja) * | 2005-03-30 | 2009-12-09 | トヨタ自動車株式会社 | 酸素吸蔵能算出装置 |
JP4832209B2 (ja) * | 2006-08-14 | 2011-12-07 | トヨタ自動車株式会社 | 触媒劣化診断装置 |
JP6094438B2 (ja) * | 2013-09-27 | 2017-03-15 | トヨタ自動車株式会社 | 内燃機関の制御装置 |
JP2015212527A (ja) | 2014-05-06 | 2015-11-26 | 株式会社デンソー | 内燃機関の排出ガス浄化装置 |
JP6584154B2 (ja) * | 2015-06-03 | 2019-10-02 | 株式会社Subaru | 触媒診断装置 |
-
2018
- 2018-12-12 JP JP2018232183A patent/JP7047742B2/ja active Active
-
2019
- 2019-12-04 CN CN201980082203.0A patent/CN113195878B/zh active Active
- 2019-12-04 DE DE112019006216.6T patent/DE112019006216T5/de active Pending
- 2019-12-04 WO PCT/JP2019/047483 patent/WO2020121921A1/ja active Application Filing
-
2021
- 2021-06-11 US US17/345,170 patent/US11384677B2/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000120475A (ja) | 1998-10-16 | 2000-04-25 | Nissan Motor Co Ltd | エンジンの排気浄化装置 |
JP2018162722A (ja) | 2017-03-27 | 2018-10-18 | 株式会社豊田中央研究所 | ディーゼルエンジンシステム |
Also Published As
Publication number | Publication date |
---|---|
WO2020121921A1 (ja) | 2020-06-18 |
DE112019006216T5 (de) | 2021-08-26 |
CN113195878B (zh) | 2022-10-04 |
US11384677B2 (en) | 2022-07-12 |
JP2020094524A (ja) | 2020-06-18 |
US20210301709A1 (en) | 2021-09-30 |
CN113195878A (zh) | 2021-07-30 |
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