JP6079716B2 - 通電加熱式触媒装置 - Google Patents
通電加熱式触媒装置 Download PDFInfo
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- JP6079716B2 JP6079716B2 JP2014153971A JP2014153971A JP6079716B2 JP 6079716 B2 JP6079716 B2 JP 6079716B2 JP 2014153971 A JP2014153971 A JP 2014153971A JP 2014153971 A JP2014153971 A JP 2014153971A JP 6079716 B2 JP6079716 B2 JP 6079716B2
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- 238000005485 electric heating Methods 0.000 title claims description 4
- 230000003197 catalytic effect Effects 0.000 title claims 3
- 239000003054 catalyst Substances 0.000 claims description 46
- 238000009792 diffusion process Methods 0.000 claims description 31
- 230000017525 heat dissipation Effects 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 230000001629 suppression Effects 0.000 claims description 9
- 230000004308 accommodation Effects 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 44
- 230000005855 radiation Effects 0.000 description 15
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 12
- 229910045601 alloy Inorganic materials 0.000 description 11
- 239000000956 alloy Substances 0.000 description 11
- 239000007789 gas Substances 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 230000008646 thermal stress Effects 0.000 description 7
- 239000000919 ceramic Substances 0.000 description 6
- 239000011247 coating layer Substances 0.000 description 5
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000007750 plasma spraying Methods 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 4
- 229910010271 silicon carbide Inorganic materials 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000005382 thermal cycling Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000873 masking effect Effects 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
Images
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
- B01D53/9454—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9495—Controlling the catalytic process
-
- 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
-
- 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
- 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
- F01N3/24—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 constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
- F01N3/2825—Ceramics
- F01N3/2828—Ceramic multi-channel monoliths, e.g. honeycombs
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Toxicology (AREA)
- Biomedical Technology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Ceramic Engineering (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
Description
上述の通電加熱式触媒装置では、昇温・降温の繰り返し(熱サイクル)により、担体にクラックが発生し、一部の配線には電流が流れ難くなるとともに、他の配線に電流が集中し、溶断に至るという問題があった。
触媒を担持する担体と、
前記担体の外周面において対向して形成された一対の電気拡散層と、
それぞれの前記電気拡散層に固定された配線部材と、
前記担体の外周面を覆うとともに、前記配線部材を外側へ引き出すための開口部を側面に有する外筒と、
前記外筒から引き出された前記配線部材を収容するために、前記外筒から突出して設けられた配線収容室と、を備え、
前記配線部材を介して前記担体が通電加熱される、通電加熱式触媒装置であって、
前記配線収容室が、前記配線部材からの放熱を抑制するための放熱抑制手段を備えているものである。
あるいは、前記放熱抑制手段は、前記配線収容室の内面に設けられた反射手段であることが好ましい。
まず、図1〜図4を参照して、第1の実施の形態に係る通電加熱式触媒装置について説明する。図1は、第1の実施の形態に係る通電加熱式触媒装置の斜視図である。図2は、図1において外筒60を取り除いた斜視図である。図3は、図2において表面電極20の真上(x軸方向プラス側)から見た平面図である。図4は、図3におけるIV-IV切断線による横断面図である。
まず、図2に示すように、担体10と一体に形成された電気拡散層11の表面に、例えばプラズマ溶射により表面電極20を形成する。続いて、表面電極20上に、引出部32が蛇腹状に折り畳まれた配線部材30を配置し、マスキングジグ治具を用いたプラズマ溶射により、配線部材30上に固定層40を形成する。これにより、表面電極20上に配線部材30が固定される。
その後、蛇腹状に折り畳まれた引出部32を引き伸ばすことにより、開口部61を介して外筒60の外側へ引出部32を引き出す。
最後に、ネジ止めや溶接などにより、引出部32を外部電極81に固定した後、内面に放熱抑制手段74が設けられた蓋部72を胴体部71に固定する。
以上の工程により、図4に示すように、第1の実施の形態に係る通電加熱式触媒装置100を得ることができる。
次に、図5を参照して、第2の実施の形態に係る通電加熱式触媒装置について説明する。図5は、第2の実施の形態に係る通電加熱式触媒装置の横断面図である。
図5に示すように、第2の実施の形態に係る通電加熱式触媒装置では、放熱抑制手段74に代えて配線収容室70を加熱するためのヒータ75が、配線収容室70の外面に設けられている。ヒータ75は、例えば小型セラミックヒータなどである。なお、図5の例では、ヒータ75は蓋部72の外面に貼り付けられているが、胴体部71の外面に貼り付けられていてもよい。また、ヒータ75は配線収容室70から離間して設けられていてもよい。さらに、ヒータ75は配線収容室70の内部に設けられていてもよい。その他の構成は、実施の形態1と同様であるため、説明を省略する。
11 電気拡散層
20 表面電極
30 配線部材
31 櫛歯状配線
32 引出部
40 固定層
50 マット
51 開口部
60 外筒
61 開口部
70 配線収容部
71 胴体部
72 蓋部
73 貫通孔
74 放熱抑制手段
75 ヒータ
81 外部電極
82 外部配線
83 バッテリ
84 制御部
100 通電加熱式触媒装置
Claims (2)
- 触媒を担持する担体と、
前記担体の外周面において対向して形成された一対の電気拡散層と、
それぞれの前記電気拡散層に固定された配線部材と、
前記担体の外周面を覆うとともに、前記配線部材を外側へ引き出すための開口部を側面に有する外筒と、
前記外筒から引き出された前記配線部材を収容するために、前記外筒から突出して設けられた配線収容室と、を備え、
前記配線部材を介して前記担体が通電加熱される、通電加熱式触媒装置であって、
前記配線収容室が、前記配線部材からの放熱を抑制するための放熱抑制手段を備え、
前記放熱抑制手段は、前記配線収容室の内面に設けられた反射手段である、
通電加熱式触媒装置。 - 触媒を担持する担体と、
前記担体の外周面において対向して形成された一対の電気拡散層と、
それぞれの前記電気拡散層に固定された配線部材と、
前記担体の外周面を覆うとともに、前記配線部材を外側へ引き出すための開口部を側面に有する外筒と、
前記外筒から引き出された前記配線部材を収容するために、前記外筒から突出して設けられた配線収容室と、を備え、
前記配線部材を介して前記担体が通電加熱される、通電加熱式触媒装置であって、
前記配線収容室が、前記配線部材からの放熱を抑制するための放熱抑制手段を備え、
前記放熱抑制手段は、前記配線収容室を加熱するヒータであり、
前記担体への通電と前記ヒータへの通電とを制御する制御部をさらに備え、
前記制御部は、
前記担体への通電をオフする前に、前記ヒータへの通電を開始し、
前記担体への通電をオフした後に、前記ヒータへの通電電力を低減させる、
通電加熱式触媒装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014153971A JP6079716B2 (ja) | 2014-07-29 | 2014-07-29 | 通電加熱式触媒装置 |
DE102015112158.1A DE102015112158A1 (de) | 2014-07-29 | 2015-07-24 | Elektrisch beheizte Katalysatorvorrichtung |
US14/810,860 US20160032807A1 (en) | 2014-07-29 | 2015-07-28 | Electrically heated catalyst device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014153971A JP6079716B2 (ja) | 2014-07-29 | 2014-07-29 | 通電加熱式触媒装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2016030237A JP2016030237A (ja) | 2016-03-07 |
JP6079716B2 true JP6079716B2 (ja) | 2017-02-15 |
Family
ID=55079711
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2014153971A Expired - Fee Related JP6079716B2 (ja) | 2014-07-29 | 2014-07-29 | 通電加熱式触媒装置 |
Country Status (3)
Country | Link |
---|---|
US (1) | US20160032807A1 (ja) |
JP (1) | JP6079716B2 (ja) |
DE (1) | DE102015112158A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6956038B2 (ja) * | 2018-03-26 | 2021-10-27 | 日本碍子株式会社 | 電気加熱型触媒用担体 |
JP7105149B2 (ja) * | 2018-09-11 | 2022-07-22 | 日本碍子株式会社 | 電気加熱型触媒用担体及び排ガス浄化装置 |
FR3135588B1 (fr) * | 2022-05-11 | 2024-04-19 | Faurecia Systemes Dechappement | Elément chauffant pour ligne d’échappement |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3494498B2 (ja) * | 1995-04-17 | 2004-02-09 | 日本碍子株式会社 | 電極構造および通電発熱式ヒーター |
JP2012112302A (ja) * | 2010-11-24 | 2012-06-14 | Toyota Motor Corp | 触媒コンバータ装置 |
JP5783037B2 (ja) | 2011-12-28 | 2015-09-24 | トヨタ自動車株式会社 | 通電加熱式触媒装置及びその製造方法 |
JP5692198B2 (ja) * | 2012-02-24 | 2015-04-01 | 株式会社デンソー | ハニカム構造体 |
JP2013181413A (ja) * | 2012-02-29 | 2013-09-12 | Toyota Motor Corp | 触媒コンバータ装置 |
JP2014073434A (ja) * | 2012-10-03 | 2014-04-24 | Toyota Motor Corp | 通電加熱式触媒装置及びその製造方法 |
-
2014
- 2014-07-29 JP JP2014153971A patent/JP6079716B2/ja not_active Expired - Fee Related
-
2015
- 2015-07-24 DE DE102015112158.1A patent/DE102015112158A1/de not_active Withdrawn
- 2015-07-28 US US14/810,860 patent/US20160032807A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
JP2016030237A (ja) | 2016-03-07 |
DE102015112158A1 (de) | 2016-02-04 |
US20160032807A1 (en) | 2016-02-04 |
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