JP5206730B2 - 触媒通電制御装置 - Google Patents
触媒通電制御装置 Download PDFInfo
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- JP5206730B2 JP5206730B2 JP2010103575A JP2010103575A JP5206730B2 JP 5206730 B2 JP5206730 B2 JP 5206730B2 JP 2010103575 A JP2010103575 A JP 2010103575A JP 2010103575 A JP2010103575 A JP 2010103575A JP 5206730 B2 JP5206730 B2 JP 5206730B2
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- 239000003054 catalyst Substances 0.000 title claims description 103
- 239000000919 ceramic Substances 0.000 claims description 118
- 238000002485 combustion reaction Methods 0.000 claims description 46
- 238000001704 evaporation Methods 0.000 claims description 21
- 230000008020 evaporation Effects 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 11
- 230000007423 decrease Effects 0.000 claims description 8
- 230000002596 correlated effect Effects 0.000 claims description 3
- 230000003197 catalytic effect Effects 0.000 claims description 2
- 238000009833 condensation Methods 0.000 description 27
- 230000005494 condensation Effects 0.000 description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 22
- 238000010438 heat treatment Methods 0.000 description 16
- 230000004913 activation Effects 0.000 description 6
- 238000009835 boiling Methods 0.000 description 6
- 230000006378 damage Effects 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000003685 thermal hair damage Effects 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
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
- F01N3/10—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
-
- 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
-
- 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
- F01N3/18—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 characterised by methods of operation; Control
- F01N3/20—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 characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
- F01N3/2013—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means
- F01N3/2026—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means directly electrifying the catalyst substrate, i.e. heating the electrically conductive catalyst substrate by joule effect
-
- 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
- F01N9/00—Electrical control of exhaust gas treating apparatus
-
- 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
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/16—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an electric heater, i.e. a resistance heater
-
- 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
- F01N2900/1628—Moisture amount in exhaust apparatus
-
- 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
- Y02T10/12—Improving ICE efficiencies
-
- 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)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Materials Engineering (AREA)
- Exhaust Gas After Treatment (AREA)
Description
図1は、触媒通電制御装置の適用対象となる触媒装置の、内燃機関に対する取付け位置を示す図である。この内燃機関10は、火花点火式のガソリンエンジンを想定したものであり、車両に搭載されて走行駆動源として機能する。また、本実施形態の車両は、走行用モータ(図示せず)を備えており、内燃機関10及び走行用モータを駆動源として走行する。
本実施形態では、上記第1実施形態にかかる図5の水分判定手段S10,S11,S12を、図7に示す水分判定手段S20,S23に変更している。なお、本実施形態にかかる触媒装置等のハード構成は、図1〜図4に示すハード構成と同じである。
上記第2実施形態にかかる図7中のステップS23では、通電初期期間以降において、触媒温度の変化率ΔTnowが判定値ΔT2未満である場合に水分有り(突沸の可能性有り)と判定している。これに対し本実施形態では、電流検出回路24cにより検出される電流の変化率ΔInowは触媒温度変化率ΔTnowと相関があることに着目し、上記ステップS23において、電流変化率ΔInowが判定値ΔI3未満である場合に水分有りと判定する。
本実施形態では、セラミック担体21の抵抗変化率ΔRnowは触媒温度変化率ΔTnowと相関があることに着目し、上記第2実施形態にかかる図7中のステップS23において、抵抗変化率ΔRnowが判定値ΔR3以上である場合に水分有り(突沸の可能性有り)と判定する。
本発明は上記実施形態の記載内容に限定されず、以下のように変更して実施してもよい。また、各実施形態の特徴的構成をそれぞれ任意に組み合わせるようにしてもよい。
Claims (6)
- 内燃機関の排気を浄化する触媒をセラミック担体に担持させて構成され、前記セラミック担体に通電して発熱させる電気加熱式の触媒装置に適用され、
前記セラミック担体の温度が所定の蒸発温度未満であり、且つ前記内燃機関を駆動させている最中である第1の場合に、前記セラミック担体へ供給する電力量を前記第1の場合でない時と比べて低くする低電力制御を実施する電力制御手段を備えることを特徴とする触媒通電制御装置。 - 内燃機関の排気を浄化する触媒をセラミック担体に担持させて構成され、前記セラミック担体に通電して発熱させる電気加熱式の触媒装置に適用され、
前記セラミック担体へ通電を開始してから所定時間が経過するまでの通電初期期間において、前記セラミック担体へ供給する電力量を前記通電初期期間でない期間と比べて低くする低電力制御を実施し、前記通電初期期間の後においても前記セラミック担体の温度が所定の蒸発温度未満である場合に前記低電力制御を継続させる電力制御手段を備えることを特徴とする触媒通電制御装置。 - 前記電力制御手段は、前記内燃機関を前回停止させた時の前記セラミック担体の温度が前記蒸発温度未満である第2の場合に、前記セラミック担体へ供給する電力量を前記第2の場合でない時と比べて低くする低電力制御を実施することを特徴とする請求項1又は2に記載の触媒通電制御装置。
- 前記電力制御手段は、前記内燃機関を駆動させている状況において前記セラミック担体の温度が前記蒸発温度未満である第3の場合に、前記セラミック担体へ供給する電力量を前記第3の場合でない時と比べて低くする低電力制御を実施することを特徴とする請求項2に記載の触媒通電制御装置。
- 前記電力制御手段は、前記セラミック担体の温度の変化率又は当該温度と相関のある物理量の変化率の絶対値が、前記触媒装置へ通電しているにも拘わらず所定値未満となっている第4の場合に、前記セラミック担体へ供給する電力量を前記第4の場合でない時と比べて低くする低電力制御を実施することを特徴とする請求項1〜4のいずれか1つに記載の触媒通電制御装置。
- 前記セラミック担体は、温度が上昇するほど電気抵抗値が低下する特性を有するものであることを特徴とする請求項1〜5のいずれか1つに記載の触媒通電制御装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010103575A JP5206730B2 (ja) | 2010-04-28 | 2010-04-28 | 触媒通電制御装置 |
US13/096,276 US9200552B2 (en) | 2010-04-28 | 2011-04-28 | Apparatus for controlling supply power to conductive carrier of catalyst converter |
DE102011017674A DE102011017674A1 (de) | 2010-04-28 | 2011-04-28 | Gerät zur Steuerung einer Zufuhrleistung zu einem leitfähigen Träger einer Katalysatoreinrichtung |
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JP2010103575A JP5206730B2 (ja) | 2010-04-28 | 2010-04-28 | 触媒通電制御装置 |
Publications (2)
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JP2011231710A JP2011231710A (ja) | 2011-11-17 |
JP5206730B2 true JP5206730B2 (ja) | 2013-06-12 |
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JP2010103575A Active JP5206730B2 (ja) | 2010-04-28 | 2010-04-28 | 触媒通電制御装置 |
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US (1) | US9200552B2 (ja) |
JP (1) | JP5206730B2 (ja) |
DE (1) | DE102011017674A1 (ja) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
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US9163541B2 (en) * | 2011-11-25 | 2015-10-20 | Toyota Jidosha Kabushiki Kaisha | Control device for an electrically heated catalyst, and electrode deterioration degree estimation device for an electrically heated catalyst |
JP6126582B2 (ja) * | 2012-03-29 | 2017-05-10 | 日本碍子株式会社 | 情報表示付き通電加熱式ヒーター及びその情報の使用方法 |
JP6131821B2 (ja) | 2013-10-22 | 2017-05-24 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
US10287958B2 (en) * | 2016-12-20 | 2019-05-14 | Denso International America, Inc. | Substrate and filter with stress/strain detection and method of use |
FR3062680B1 (fr) * | 2017-02-03 | 2021-01-15 | Peugeot Citroen Automobiles Sa | Dispositif de post-traitement des gaz d’echappement d’un moteur thermique |
JP7047677B2 (ja) * | 2018-08-31 | 2022-04-05 | トヨタ自動車株式会社 | 車両及び車両の制御方法 |
JP6996456B2 (ja) | 2018-08-31 | 2022-01-17 | トヨタ自動車株式会社 | 車両及び車両の制御方法 |
JP7028140B2 (ja) * | 2018-10-26 | 2022-03-02 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
JP2021116775A (ja) | 2020-01-29 | 2021-08-10 | トヨタ自動車株式会社 | 内燃機関の制御装置 |
GB2597992A (en) * | 2020-08-14 | 2022-02-16 | Narayanan Vikram | Electrically heated exhaust gas treatment device with pre-heating, internal over-heating protecting and temperature measurement feedback |
US20220082042A1 (en) * | 2020-09-17 | 2022-03-17 | Advanced Technology Emission Solutions Inc. | Apparatus and method for gaseous emissions treatment with resistive heating |
JP2023049308A (ja) | 2021-09-29 | 2023-04-10 | トヨタ自動車株式会社 | 内燃機関の制御装置 |
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JPH0642339A (ja) * | 1992-07-21 | 1994-02-15 | Mitsubishi Electric Corp | 電気加熱触媒制御装置 |
JPH06173663A (ja) | 1992-12-08 | 1994-06-21 | Nissan Motor Co Ltd | 内燃機関の排気浄化装置 |
JP3602614B2 (ja) | 1995-07-04 | 2004-12-15 | 本田技研工業株式会社 | 内燃機関の排気ガス浄化装置 |
JP2003343334A (ja) * | 2002-01-22 | 2003-12-03 | Hitachi Ltd | 内燃機関用排ガス浄化装置の水分除去装置及び方法 |
JP4110874B2 (ja) * | 2002-08-09 | 2008-07-02 | 株式会社デンソー | 内燃機関のガスセンサの加熱制御装置 |
JP2004225539A (ja) * | 2003-01-20 | 2004-08-12 | Hitachi Ltd | 排気ガス浄化装置 |
JP5025609B2 (ja) | 2003-09-04 | 2012-09-12 | 株式会社日立ハイテクノロジーズ | 真空処理装置 |
JP2005194935A (ja) * | 2004-01-07 | 2005-07-21 | Isuzu Motors Ltd | 排気ガス浄化装置 |
JP4914099B2 (ja) * | 2006-04-05 | 2012-04-11 | 日立オートモティブシステムズ株式会社 | 排気ガスセンサのヒータ制御装置 |
JP2008267157A (ja) * | 2007-04-16 | 2008-11-06 | Toyota Motor Corp | 内燃機関の排気浄化システム |
JP5125576B2 (ja) * | 2008-02-13 | 2013-01-23 | トヨタ自動車株式会社 | 通電加熱式触媒装置の異常判定システム |
JP2010202012A (ja) * | 2009-03-02 | 2010-09-16 | Toyota Motor Corp | ハイブリッド車両の制御装置 |
JP4900410B2 (ja) | 2009-03-25 | 2012-03-21 | トヨタ自動車株式会社 | 車両の制御装置 |
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2010
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2011
- 2011-04-28 US US13/096,276 patent/US9200552B2/en active Active
- 2011-04-28 DE DE102011017674A patent/DE102011017674A1/de active Pending
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US20110265460A1 (en) | 2011-11-03 |
US9200552B2 (en) | 2015-12-01 |
JP2011231710A (ja) | 2011-11-17 |
DE102011017674A1 (de) | 2012-01-05 |
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