JP7283444B2 - エンジンシステム - Google Patents
エンジンシステム Download PDFInfo
- Publication number
- JP7283444B2 JP7283444B2 JP2020096953A JP2020096953A JP7283444B2 JP 7283444 B2 JP7283444 B2 JP 7283444B2 JP 2020096953 A JP2020096953 A JP 2020096953A JP 2020096953 A JP2020096953 A JP 2020096953A JP 7283444 B2 JP7283444 B2 JP 7283444B2
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- JP
- Japan
- Prior art keywords
- nox
- nox purification
- purification rate
- catalyst
- exhaust gas
- 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.)
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Classifications
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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
- 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
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
- F01N3/0842—Nitrogen oxides
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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
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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
- F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or 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
- 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
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0814—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with catalytic converters, e.g. NOx absorption/storage reduction catalysts
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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
- 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
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0871—Regulation of absorbents or adsorbents, e.g. purging
- F01N3/0885—Regeneration of deteriorated absorbents or adsorbents, e.g. desulfurization of NOx traps
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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
- F02D41/14—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
- F02D41/146—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 NOx content or concentration
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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
- F01N2550/00—Monitoring or diagnosing the deterioration of exhaust systems
- F01N2550/03—Monitoring or diagnosing the deterioration of exhaust systems of sorbing activity of adsorbents or absorbents
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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
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
- F01N2560/026—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting NOx
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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
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/06—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a temperature sensor
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- 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)
- Chemical Kinetics & Catalysis (AREA)
- Exhaust Gas After Treatment (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Description
Claims (6)
- エンジンと、
前記エンジンと接続され、前記エンジン内で発生した排気ガスが流れる排気通路と、
前記排気通路に配設され、前記排気ガスに含まれるNOxを浄化するNOx浄化触媒と、
前記NOx浄化触媒の少なくとも下流側に存在するNOxを検出するNOx検出部と、
前記NOx浄化触媒の現在の状態に基づいて、前記NOx浄化触媒のNOx浄化率推定値を算出する第1浄化率算出部と、
前記NOx検出部の検出値に基づいて、前記NOx浄化触媒のNOx浄化率検出値を算出する第2浄化率算出部と、
前記第1浄化率算出部により算出された前記NOx浄化率推定値と前記第2浄化率算出部により算出された前記NOx浄化率検出値との差分を算出し、前記NOx浄化率推定値と前記NOx浄化率検出値との差分が規定時間内に規定値以上となったときに、前記NOx浄化触媒の端面に詰まりが生じている可能性があると判定する詰まり判定部とを備えるエンジンシステム。 - 前記詰まり判定部により前記NOx浄化触媒の端面に詰まりが生じている可能性があると判定されたときに、前記NOx浄化触媒に流入される前記排気ガスを昇温させる排気昇温部を更に備える請求項1記載のエンジンシステム。
- 前記第1浄化率算出部は、前記NOx浄化触媒に流入される前記排気ガスの温度及び流量と、前記NOx浄化触媒の劣化度、NOx吸蔵量及び硫黄被毒量とに基づいて、前記NOx浄化触媒のNOx浄化率推定値を算出する請求項1または2記載のエンジンシステム。
- 前記排気ガスが安定状態であるかどうかを判断し、前記排気ガスが安定状態であるときに、前記詰まり判定部による判定処理の実行を許可する判定適否判断部を更に備える請求項1~3の何れか一項記載のエンジンシステム。
- 前記判定適否判断部は、前記排気ガスの安定状態が一定時間継続しているときに、前記詰まり判定部による判定処理の実行を許可する請求項4記載のエンジンシステム。
- 前記NOx検出部の数が2つであり、
前記NOx検出部は、前記NOx浄化触媒の上流側及び下流側に存在するNOxを検出する請求項1~5の何れか一項記載のエンジンシステム。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020096953A JP7283444B2 (ja) | 2020-06-03 | 2020-06-03 | エンジンシステム |
DE102021114111.7A DE102021114111A1 (de) | 2020-06-03 | 2021-06-01 | Maschinensystem |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020096953A JP7283444B2 (ja) | 2020-06-03 | 2020-06-03 | エンジンシステム |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2021188592A JP2021188592A (ja) | 2021-12-13 |
JP7283444B2 true JP7283444B2 (ja) | 2023-05-30 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2020096953A Active JP7283444B2 (ja) | 2020-06-03 | 2020-06-03 | エンジンシステム |
Country Status (2)
Country | Link |
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JP (1) | JP7283444B2 (ja) |
DE (1) | DE102021114111A1 (ja) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120222401A1 (en) | 2011-02-23 | 2012-09-06 | Robert Bosch Gmbh | Method for operating an exhaust system of an internal combustion engine |
WO2014092159A1 (ja) | 2012-12-13 | 2014-06-19 | トヨタ自動車株式会社 | 排気浄化装置の故障診断装置 |
JP2017040165A (ja) | 2015-08-17 | 2017-02-23 | トヨタ自動車株式会社 | 内燃機関の制御装置 |
JP2018200021A (ja) | 2017-05-26 | 2018-12-20 | トヨタ自動車株式会社 | NOx吸蔵還元触媒の劣化診断装置 |
-
2020
- 2020-06-03 JP JP2020096953A patent/JP7283444B2/ja active Active
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2021
- 2021-06-01 DE DE102021114111.7A patent/DE102021114111A1/de active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120222401A1 (en) | 2011-02-23 | 2012-09-06 | Robert Bosch Gmbh | Method for operating an exhaust system of an internal combustion engine |
WO2014092159A1 (ja) | 2012-12-13 | 2014-06-19 | トヨタ自動車株式会社 | 排気浄化装置の故障診断装置 |
JP2017040165A (ja) | 2015-08-17 | 2017-02-23 | トヨタ自動車株式会社 | 内燃機関の制御装置 |
JP2018200021A (ja) | 2017-05-26 | 2018-12-20 | トヨタ自動車株式会社 | NOx吸蔵還元触媒の劣化診断装置 |
Also Published As
Publication number | Publication date |
---|---|
DE102021114111A1 (de) | 2021-12-09 |
JP2021188592A (ja) | 2021-12-13 |
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