JPH08326526A - Electrically heated metallic catalyst carrier - Google Patents
Electrically heated metallic catalyst carrierInfo
- Publication number
- JPH08326526A JPH08326526A JP7131597A JP13159795A JPH08326526A JP H08326526 A JPH08326526 A JP H08326526A JP 7131597 A JP7131597 A JP 7131597A JP 13159795 A JP13159795 A JP 13159795A JP H08326526 A JPH08326526 A JP H08326526A
- Authority
- JP
- Japan
- Prior art keywords
- metal
- electrode
- center electrode
- catalyst carrier
- foil
- 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.)
- Withdrawn
Links
- 239000003863 metallic catalyst Substances 0.000 title abstract 4
- 239000011888 foil Substances 0.000 claims abstract description 81
- 239000000463 material Substances 0.000 claims abstract description 49
- 239000011810 insulating material Substances 0.000 claims abstract description 14
- 238000004804 winding Methods 0.000 claims abstract description 3
- 239000002184 metal Substances 0.000 claims description 184
- 239000003054 catalyst Substances 0.000 claims description 77
- 238000010438 heat treatment Methods 0.000 claims description 14
- 238000005485 electric heating Methods 0.000 claims description 4
- 230000008646 thermal stress Effects 0.000 abstract description 13
- 230000002093 peripheral effect Effects 0.000 abstract description 5
- 230000003014 reinforcing effect Effects 0.000 abstract description 4
- 230000002040 relaxant effect Effects 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 description 7
- 238000001816 cooling Methods 0.000 description 7
- 230000004913 activation Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- LFYJSSARVMHQJB-QIXNEVBVSA-N bakuchiol Chemical compound CC(C)=CCC[C@@](C)(C=C)\C=C\C1=CC=C(O)C=C1 LFYJSSARVMHQJB-QIXNEVBVSA-N 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、金属ハニカム体を触媒
担体としこれを通電発熱させて、短時間に触媒活性温度
に上昇できる構造を有する電気加熱式金属触媒担体に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrically heated metal catalyst carrier having a structure in which a metal honeycomb body is used as a catalyst carrier to generate heat by energizing the catalyst carrier to raise the catalyst activation temperature in a short time.
【０００２】[0002]
【従来の技術】例えば、近年、自動車等内燃機関の排気
通路に浄化触媒を配し、排気中のＨＣ，ＣＯ，ＮＯｘ等
の有害成分を浄化する技術が知られている。しかし、排
気浄化触媒は、活性温度より低い温度では、排気浄化能
力が著しく低下するため、内燃機関の始動時等、触媒の
温度が低い間は、排気中の上記有害成分、特にＨＣ，Ｃ
Ｏ成分が触媒により浄化されず、そのまま大気中に放出
されるという問題を生ずる。2. Description of the Related Art For example, in recent years, a technique has been known in which a purifying catalyst is arranged in an exhaust passage of an internal combustion engine such as an automobile to purify harmful components such as HC, CO and NOx in exhaust gas. However, the exhaust purification catalyst remarkably deteriorates in exhaust purification ability at a temperature lower than the activation temperature. Therefore, while the temperature of the catalyst is low such as at the time of starting the internal combustion engine, the harmful components in the exhaust gas, particularly HC and C, are exhausted.
There is a problem that the O component is not purified by the catalyst and is directly released into the atmosphere.
【０００３】この問題を解決するために、触媒担体に金
属を使用し、内燃機関の始動時にこの金属触媒担体に、
電流を流すことにより、金属触媒担体自体を発熱させ
て、短時間で触媒活性化温度（３００〜４００℃）に上
昇させるようにした電気加熱式触媒装置が提案されてい
る。In order to solve this problem, a metal is used for the catalyst carrier, and this metal catalyst carrier is used for starting the internal combustion engine.
An electrically heated catalyst device has been proposed in which a metal catalyst carrier itself is heated by passing an electric current to raise the temperature to a catalyst activation temperature (300 to 400 ° C.) in a short time.
【０００４】この種の電気加熱式触媒装置の例として、
本件出願人が特願平６−１１６６７４号において提案し
たものがある。この電気加熱式触媒装置は、概念的には
図５に示すように、排気ガス流路に接続された筒状のケ
ーシング１内に電気加熱式触媒担体２と主触媒担体３を
直列配設してなるもので、排ガスを電気加熱式金属触媒
担体２を経由して主触媒担体３に導き、ここで排ガスを
浄化して排出するように構成されている。As an example of this type of electrically heated catalyst device,
There is one proposed by the applicant in Japanese Patent Application No. 6-116674. Conceptually, as shown in FIG. 5, this electrically heated catalyst device has an electrically heated catalyst carrier 2 and a main catalyst carrier 3 arranged in series in a cylindrical casing 1 connected to an exhaust gas passage. The exhaust gas is guided to the main catalyst carrier 3 via the electrically heated metal catalyst carrier 2, where the exhaust gas is purified and discharged.
【０００５】ここで用いられる電気加熱式触媒担体２
は、図６に示すように、波箔、平箔の少なくとも一方の
表面に絶縁被膜を形成した金属製の平箔４と波箔５を重
ねて中心電極６Ａの回りに巻回して得られる図７に示す
ような円筒状の金属箔積層体（ハニカム体）７と、この
ハニカム体を内装した金属外筒（ケーシング）１と、こ
の金属外筒に接続された外部電極８と、この外部電極と
前記中心電極６Ａ間に通電する電源９等から構成されて
おり、ハニカム体７に通電してこのハニカム体内に形成
した電流路１０で発熱させ、触媒活性化温度まで昇温さ
せ、触媒反応を促進する機能を有している。Electric heating type catalyst carrier 2 used here
6 is a diagram obtained by stacking a metal flat foil 4 and a corrugated foil 5 each having an insulating coating formed on at least one surface of a corrugated foil or a flat foil and winding it around a center electrode 6A as shown in FIG. A cylindrical metal foil laminate (honeycomb body) 7 as shown in FIG. 7, a metal outer cylinder (casing) 1 in which the honeycomb body is housed, an external electrode 8 connected to the metal outer cylinder, and the external electrode And a power source 9 for energizing between the center electrode 6A and the like, and the honeycomb body 7 is energized to generate heat in a current path 10 formed in the honeycomb body to raise the temperature to a catalyst activation temperature to carry out a catalytic reaction. It has the function of promoting.
【０００６】このハニカム体７を形成する金属平箔４、
金属波箔５には、一般には導電性のある金属箔が用いら
れており、このハニカム体を通電発熱可能な電気加熱式
触媒担体に用いる場合には、表面にアルミナなどの金属
酸化物からなる絶縁被膜を形成させ、金属平箔と金属波
箔を局部的に接合し、図８に示すようにこの接合部１１
において局所的に絶縁被膜を破壊して金属平箔と金属波
箔間に、中心電極６Ａ側から金属外筒１側に例えば螺旋
状の電流路１０を形成することが行われている。[0006] The flat metal foil 4 forming the honeycomb body 7,
In general, a conductive metal foil is used as the metal wave foil 5, and when this honeycomb body is used as an electrically heated catalyst carrier capable of generating and heating electricity, the surface is made of a metal oxide such as alumina. An insulating film is formed and the flat metal foil and the corrugated metal foil are locally bonded together. As shown in FIG.
In this case, the insulating coating is locally destroyed to form, for example, a spiral current path 10 from the center electrode 6A side to the metal outer cylinder 1 side between the metal flat foil and the metal corrugated foil.
【０００７】このように、ハニカム体７を形成する金属
平箔４と金属波箔５は、電流路１０を形成する接合部１
１によって固定され、内周面の補強接合部７ａを介して
中心電極６Ａの外周面に、また外周面の補強接合部７ｂ
は金属外筒（ケーシング）１にそれぞれ強固に接合され
ており、ハニカム体７の通電発熱は、エンジンが始動時
に中心電極６Ａと外部電極８間に電流を流し、ハニカム
体７の電流路１０の発熱点で発熱させることによって行
うように構成されている。この電気加熱式触媒担体にお
いては、中心電極６Ａが電極引出材１２を介して金属外
筒１の外部のリード線１３と接続され、この電極引出材
１２は金属外筒に溶接固定された保持部１４に絶縁固定
されている。As described above, the flat metal foil 4 and the corrugated metal foil 5 forming the honeycomb body 7 are joined to each other at the joint portion 1 forming the current path 10.
1 and is fixed to the outer peripheral surface of the center electrode 6A via the reinforcing joint portion 7a on the inner peripheral surface, and the reinforcing joint portion 7b on the outer peripheral surface.
Are strongly bonded to the metal outer casing (casing) 1, respectively, and the energization heat generation of the honeycomb body 7 causes a current to flow between the center electrode 6A and the outer electrode 8 when the engine is started, so that the current path 10 of the honeycomb body 7 is heated. It is configured so that heat is generated at a heat generation point. In this electrically heated catalyst carrier, the center electrode 6A is connected to a lead wire 13 outside the metal outer cylinder 1 via an electrode lead-out member 12, and the electrode lead-out member 12 is welded and fixed to the metal outer cylinder. 14 is insulated and fixed.
【０００８】一般には、特開平５−２２０４０４号公報
に開示されているように、中心電極６Ａと電極引出材１
２と金属外筒（ケーシング）１は、保持部１４を介して
剛構造で固定されており、このため、電気加熱式金属触
媒担体を厳しい加熱・冷却の熱サイクルの排ガス条件下
で使用する際に、金属箔と中心電極との熱膨張差や中心
電極、電極引出材と金属外筒１との熱膨張差により生ず
る熱応力によって、中心電極６Ａ近傍の金属箔（金属波
箔、金属平箔）が破断したり、電極引出材１２と金属外
筒（ケーシング）間を電気絶縁する絶縁材（図示省略）
が破損して通電不良や排ガス漏れを起し、電気加熱式金
属触媒担体としての機能が低下することがある。Generally, as disclosed in Japanese Patent Laid-Open No. 5-220404, the center electrode 6A and the electrode lead-out member 1 are used.
2 and the metal outer casing (casing) 1 are fixed by a rigid structure via the holding portion 14, and therefore, when the electrically heated metal catalyst carrier is used under exhaust gas conditions of a severe heating / cooling thermal cycle. In addition, due to the thermal stress caused by the difference in thermal expansion between the metal foil and the center electrode and the difference in thermal expansion between the center electrode, the electrode lead-out material and the metal outer cylinder 1, the metal foil (metal corrugated foil, metal flat foil) near the center electrode 6A is ) Is broken, or an insulating material (not shown) that electrically insulates between the electrode lead-out material 12 and the metal outer cylinder (casing).
May be damaged, resulting in poor electrical conduction or exhaust gas leakage, and the function as an electrically heated metal catalyst carrier may deteriorate.
【０００９】[0009]
【発明が解決しようとする課題】本発明は、厳しい加熱
・冷却の熱サイクルの排ガス条件下で使用する際して、
中心電極に近い金属波箔先端部に生ずる破断を防止する
とともに、電極引出材と金属外筒間を電気絶縁する絶縁
材（碍子）の破損を防止して耐久性を向上できる電気加
熱式金属触媒担体を提供するものである。DISCLOSURE OF THE INVENTION The present invention, when used under exhaust gas conditions of severe heating / cooling heat cycle,
An electrically heated metal catalyst that prevents breakage that occurs at the tip of the metal corrugated foil near the center electrode and prevents damage to the insulating material (insulator) that electrically insulates between the electrode lead-out material and the metal outer cylinder. A carrier is provided.
【００１０】[0010]
【課題を解決するための手段】本発明の第一の発明は、
金属平箔と金属波箔を重ね中心電極に円筒状に巻き取っ
て得られるハニカム体を金属外筒に収容してなり、中心
電極と外部電極間に電流路を形成した電気加熱式金属触
媒担体において、中心電極を中空体としたことを特徴と
する電気加熱式金属触媒担体。The first invention of the present invention is as follows:
An electrically heated metal catalyst carrier in which a honeycomb body obtained by stacking a metal flat foil and a metal corrugated foil on a central electrode in a cylindrical shape is housed in a metallic outer cylinder, and a current path is formed between the central electrode and the external electrode. In the electric heating type metal catalyst carrier, the central electrode is a hollow body.
【００１１】第二の発明は、金属平箔と金属波箔を重ね
中心電極に円筒状に巻き取って得られるハニカム体を金
属外筒に収容してなり、中心電極と外部電極間に電流路
を形成した電気加熱式金属触媒担体において、中心電極
の先端部にスリットを設けたことを特徴とする電気加熱
式金属触媒担体。A second aspect of the invention is that a honeycomb body obtained by stacking a metal flat foil and a metal corrugated foil on a center electrode in a cylindrical shape is housed in a metal outer cylinder, and a current path is provided between the center electrode and the outer electrode. The electrically heated metal catalyst carrier having the above-mentioned structure, wherein a slit is provided at the tip of the center electrode.
【００１２】第三の発明は、金属平箔と金属波箔を重ね
中心電極に円筒状に巻き取って得られるハニカム体を金
属外筒に収容してなり、中心電極と外部電極間に電流路
を形成した電気加熱式金属触媒担体において、中心電極
と金属箔および中心電極近傍の金属箔同志の接合部で
は、少なくともハニカム体の排ガス流入側端部で非接合
部を有することを特徴とする電気加熱式金属触媒担体。A third aspect of the invention is that a honeycomb body obtained by stacking a metal flat foil and a metal corrugated foil on a center electrode in a cylindrical shape is housed in a metal outer cylinder, and a current path is provided between the center electrode and the outer electrode. In the electrically-heated metal catalyst carrier formed with, in the joint portion between the center electrode and the metal foil and the metal foil in the vicinity of the center electrode, at least the exhaust gas inflow side end portion of the honeycomb body is characterized by having a non-joint portion. Heating type metal catalyst carrier.
【００１３】第四の発明は、金属平箔と金属波箔を重ね
中心電極に円筒状に巻き取って得られるハニカム体を金
属外筒に収容してなり、中心電極と外部電極間に電流路
を形成した電気加熱式金属触媒担体において、中心電
極、および、中心電極に電気的に接続され電極を金属外
筒の外に引き出す電極引出材を線膨張係数が１０〜１５
×１０-6／℃の耐熱金属板としたことを特徴とする電気
加熱式金属触媒担体。In a fourth aspect of the invention, a honeycomb body obtained by stacking a metal flat foil and a metal corrugated foil on a center electrode in a cylindrical shape is housed in a metal outer cylinder, and a current path is provided between the center electrode and the outer electrode. In the electrically heated metal catalyst carrier having the above-mentioned structure, the linear expansion coefficient of the center electrode and the electrode lead-out material electrically connected to the center electrode and for drawing the electrode out of the metal outer cylinder are 10 to 15
An electrically heated metal catalyst carrier, which is a heat-resistant metal plate of × 10 -6 / ° C.
【００１４】第五の発明は、金属平箔と金属波箔を重ね
中心電極に円筒状に巻き取って得られるハニカム体を金
属外筒に収容してなり、中心電極と外部電極間に電流路
を形成した電気加熱式金属触媒担体において、中心電極
に電気的に接続され電極を金属外筒の外に引き出す耐熱
金属板からなる電極引出材に曲り部を形成したことを特
徴とする電気加熱式金属触媒担体。In a fifth aspect of the invention, a honeycomb body obtained by stacking a metal flat foil and a metal corrugated foil on a center electrode in a cylindrical shape is housed in a metal outer cylinder, and a current path is provided between the center electrode and the outer electrode. In the electrically-heated metal catalyst carrier having formed therein, the electrically-heated metal catalyst carrier is characterized in that a bent portion is formed in the electrode lead-out material that is electrically connected to the center electrode and is made of a heat-resistant metal plate that draws the electrode out of the metal outer cylinder. Metal catalyst carrier.
【００１５】第六の発明は、金属平箔と金属波箔を重ね
中心電極に円筒状に巻き取って得られるハニカム体を金
属外筒に収容してなり、中心電極と外部電極間に電流路
を形成した電気加熱式金属触媒担体において、中心電極
に電気的に接続され電極を金属外筒の外に引き出す電極
引出材を金属外筒に絶縁材を介して保持し、この電極引
出材の係止部をクッション材を介して係止体で固定した
ことを特徴とする電気加熱式金属触媒担体。In a sixth aspect of the present invention, a honeycomb body obtained by stacking a metal flat foil and a metal corrugated foil on a center electrode in a cylindrical shape is housed in a metal outer cylinder, and a current path is provided between the center electrode and the outer electrode. In the electrically heated metal catalyst carrier having the above-mentioned structure, an electrode lead-out material that is electrically connected to the center electrode and draws the electrode out of the metal outer tube is held in the metal outer tube via an insulating material, and the An electrically heated metal catalyst carrier, characterized in that the stopper is fixed by a stopper through a cushion material.
【００１６】第七の発明は、第一の発明〜第六の発明を
同時に満足する構成を有することを特徴とする電気加熱
式金属触媒担体。第八の発明は、第一の発明〜第六の発
明を選択的に組み合わせた構成を有することを特徴とす
る電気加熱式金属触媒担体である。A seventh invention is an electrically heated metal catalyst carrier characterized in that it has a constitution that simultaneously satisfies the first invention to the sixth invention. An eighth invention is an electrically heated metal catalyst carrier, which has a configuration in which the first invention to the sixth invention are selectively combined.
【００１７】[0017]
【作用】本発明においては、中心電極とハニカムとの間
および電極引出材と金属外筒（ケーシング）との間に、
熱膨張吸収構造を形成することができるので、電気加熱
式金属触媒担体を厳しい加熱・冷却の熱サイクルの排ガ
ス条件下で使用する際に、金属箔と中心電極、および中
心電極、電極引出材と金属外筒（ケーシング）１との熱
膨張差により生ずる熱応力を軽減でき、中心電極近傍の
金属箔の破断、電極引出材と金属外筒間の電気絶縁材の
破損を防止して電気加熱式金属触媒担体の耐久性を向上
することができる。In the present invention, between the center electrode and the honeycomb and between the electrode lead-out material and the metal outer cylinder (casing),
Since it is possible to form a thermal expansion absorption structure, when using an electrically heated metal catalyst carrier under exhaust gas conditions of a severe heating / cooling heat cycle, the metal foil and the center electrode, and the center electrode and the electrode lead-out material can be used. The thermal stress caused by the difference in thermal expansion from the metal outer casing (casing) 1 can be reduced, and the metal foil in the vicinity of the center electrode can be prevented from breaking, and the electric insulating material between the electrode drawing material and the metal outer casing can be prevented from being damaged. The durability of the metal catalyst carrier can be improved.
【００１８】本発明者等は、電気加熱式金属触媒担体に
おいて、加熱・冷却の熱サイクルを与えた際、中心電極
に近い金属箔（金属平箔、金属波箔）の破断現象および
中心電極引出材と金属外筒間の電気絶縁材の破損現象の
メカニズムについて検討し、次の知見を得た。The inventors of the present invention have found that when an electrically heated metal catalyst carrier is subjected to a heating / cooling thermal cycle, the metal foil (metal flat foil, metal corrugated foil) near the center electrode is broken and the center electrode is pulled out. The mechanism of the damage phenomenon of the electrical insulating material between the material and the metal outer cylinder was examined, and the following findings were obtained.
【００１９】即ち、中心電極近傍の金属箔の破断現象
は、金属箔と中心電極との半径方向、および中心電極と
金属外筒との排ガス流れの方向の熱膨張差による熱応力
に起因して発生し、電極引出材と金属外筒（ケーシン
グ）間の電気絶縁材の破損現象は、電極引出材と金属外
筒との熱膨張差による熱応力に起因して発生することを
知見した。That is, the rupture phenomenon of the metal foil in the vicinity of the center electrode is caused by the thermal stress due to the difference in thermal expansion between the metal foil and the center electrode in the radial direction and between the center electrode and the metal outer cylinder in the exhaust gas flow direction. It was found that the phenomenon of occurrence of damage to the electrical insulating material between the electrode drawing material and the metal outer cylinder (casing) occurs due to the thermal stress due to the difference in thermal expansion between the electrode drawing material and the metal outer cylinder.
【００２０】本発明者等は、これらの知見に基づき、金
属箔の破断を防止するためには、 中心電極に熱膨張吸収構造を付与する 中心電極近傍の金属箔に対する中心電極の熱膨張差の
影響を小さくする 電極引出材に熱膨張吸収構造を付与する ことが有効であり、電極引出材と金属外筒間の電気絶縁
材の破損を防止するために、 電極引出材に熱膨張吸収構造を付与する 電極引出材の係止部と係止材間に熱膨張吸収構造を付
与する ことが有効である。と認識し、その具体的手段として本
発明を完成するに至った。Based on these findings, the inventors of the present invention provide a thermal expansion absorbing structure to the center electrode in order to prevent the metal foil from being broken. It is effective to add a thermal expansion absorption structure to the electrode lead-out material, and to prevent damage to the electrical insulating material between the electrode lead-out material and the metal outer cylinder, the electrode lead-out material is provided with a thermal expansion absorption structure. It is effective to provide a thermal expansion absorption structure between the locking portion of the electrode lead-out material and the locking material. Therefore, the present invention has been completed as a specific means.
【００２１】すなわち、第一の発明では、中心電極を中
空にし温度差を低減して、軸方向、半径方向の熱膨張差
を小さくする。なお、この中空部は、部分的例えば先端
部のみに形成してもよい。That is, in the first aspect of the invention, the center electrode is made hollow so that the temperature difference is reduced and the difference in thermal expansion between the axial direction and the radial direction is reduced. The hollow portion may be partially formed, for example, only at the tip portion.
【００２２】第二の発明では、先端部にスリットを形成
して金属箔に対する半径方向の熱応力を緩和する。な
お、スリットを形成する場合は、必ずしも中空体にする
必要はない。このスリット効果を確かなものにするため
には、スリットの長さをハニカム体の厚みの１〜２倍の
領域にすることが好ましい。In the second aspect of the invention, a slit is formed at the tip end to relieve the thermal stress on the metal foil in the radial direction. In addition, when forming a slit, it does not necessarily need to be a hollow body. In order to ensure this slit effect, it is preferable that the length of the slit is in the range of 1 to 2 times the thickness of the honeycomb body.
【００２３】第三の発明では、中心電極と金属箔および
中心電極近傍の金属箔同志の接合部では、少なくとも排
ガス流入側端部で非接合部を有するようにして、金属箔
に対する半径方向の熱応力を緩和する。In the third aspect of the present invention, the joint between the center electrode and the metal foil and the metal foil in the vicinity of the center electrode has a non-joint portion at least at the end portion on the exhaust gas inflow side so that the heat generated in the radial direction with respect to the metal foil is increased. Relieves stress.
【００２４】第四の発明では、中心電極および電極引出
材を線膨張係数が１０〜１５×１０-6／℃の耐熱金属に
して金属箔と中心電極間、中心電極、電極引出材と金属
外筒（ケーシング）間の熱膨張差を緩和する。この線膨
張係数は、金属箔、金属外筒の線膨張係数と同じまたは
近い領域であることが好ましい。In the fourth invention, the center electrode and the electrode lead-out material are made of a heat-resistant metal having a linear expansion coefficient of 10 to 15 × 10 −6 / ° C., between the metal foil and the center electrode, between the center electrode, the electrode lead-out material and the metal outside. The difference in thermal expansion between the cylinders (casing) is reduced. It is preferable that the coefficient of linear expansion be in the same area as or close to the coefficient of linear expansion of the metal foil or the metal outer cylinder.
【００２５】第五の発明では、中心電極を金属筒に固定
する耐熱金属板からなる電極引出材に曲り部を形成して
電極引出材の熱膨張を吸収する。第五の発明において、
耐熱金属板からなる電極引出材は、排ガス流に対する抵
抗を小さくするためには、排ガス流路では断面積の小さ
い側端面をハニカム体の下流側端面向けて配置し固定す
ることがより望ましい。According to the fifth aspect of the invention, the bent portion is formed in the electrode lead-out member made of a heat-resistant metal plate for fixing the center electrode to the metal cylinder to absorb the thermal expansion of the electrode lead-out member. In the fifth invention,
In order to reduce the resistance to the exhaust gas flow, it is more preferable that the electrode lead-out material made of a heat-resistant metal plate is arranged and fixed such that the side end surface having a small cross-sectional area is directed toward the downstream end surface of the honeycomb body in the exhaust gas flow path.
【００２６】第六の発明では、中心電極に接続した電極
引出材の金属外筒との絶縁係止部とその係止体間にクッ
ション材を介在させて固定して、電極引出材の半径方向
の熱応力を緩和する。このクッション材には耐熱性があ
り、適度の伸縮性を有するものであればよく、例えばス
テンレス繊維やセラミックス繊維の加圧成形体などが適
性がある。According to the sixth aspect of the present invention, a cushion member is interposed between the insulating locking portion of the electrode leading member connected to the center electrode and the metal outer cylinder and the locking member so as to fix the electrode leading member in the radial direction. Relieves the thermal stress of. The cushion material may be heat resistant and has appropriate elasticity, and for example, a pressure molded body of stainless fiber or ceramic fiber is suitable.
【００２７】第七の発明では、第一の発明〜第六の発明
を同時に満足するように構成する。第八の発明では、第
一の発明〜第六の発明を選択的に組み合わせた構成にす
る。In the seventh invention, the first invention to the sixth invention are simultaneously satisfied. In the eighth invention, the first invention to the sixth invention are selectively combined.
【００２８】このように構成することによって、中心電
極とハニカム体（金属箔）間、電極引出材と金属外筒
（ケーシング）間に熱膨張吸収構造を形成することがで
き、電気加熱式金属触媒担体に加熱・冷却の熱サイクル
を与えた際に、金属箔と中心電極間、中心電極、電極引
出材と金属外筒（ケーシング）１との熱膨張差により生
ずる熱応力を軽減でき、中心電極近傍の金属箔の破断、
電極引出材と金属外筒間の電気絶縁材の破損を防止して
電気加熱式金属触媒担体の耐久性を向上することができ
る。With this structure, a thermal expansion absorption structure can be formed between the center electrode and the honeycomb body (metal foil), and between the electrode lead-out material and the metal outer cylinder (casing). When a heat cycle of heating and cooling is applied to the carrier, the thermal stress caused by the difference in thermal expansion between the metal foil and the center electrode, the center electrode, the electrode drawing material and the metal outer casing (casing) 1 can be reduced, and the center electrode can be reduced. Rupture of metal foil in the vicinity,
The durability of the electrically heated metal catalyst carrier can be improved by preventing damage to the electrical insulating material between the electrode lead-out material and the metal outer cylinder.
【００２９】[0029]
【実施例】以下に本発明を図１〜図４に示す実施例に基
づいて説明する。図１は、本発明の電気加熱式金属触媒
担体を用いた電気加熱式触媒装置を示している。ここで
は、第一の発明〜第六の発明を選択的に組み合わせた第
八の発明の実施例に基づいて本発明の概要を説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on the embodiments shown in FIGS. FIG. 1 shows an electrically heated catalyst device using the electrically heated metal catalyst carrier of the present invention. Here, the outline of the present invention will be described based on an embodiment of the eighth invention in which the first invention to the sixth invention are selectively combined.
【００３０】図１に示すように、電気加熱式触媒装置は
排気ガス流路に接続された筒状のケーシング１内に電気
加熱式触媒担体２と主触媒担体３を直列配設してなるも
ので、排ガスを本発明の電気加熱式金属触媒担体２を経
由して主触媒担体３に導き、ここで排ガスを浄化して排
出するように構成されている。As shown in FIG. 1, the electrically heated catalyst device comprises an electrically heated catalyst carrier 2 and a main catalyst carrier 3 arranged in series in a cylindrical casing 1 connected to an exhaust gas passage. Then, the exhaust gas is guided to the main catalyst carrier 3 via the electrically heated metal catalyst carrier 2 of the present invention, where the exhaust gas is purified and discharged.
【００３１】ここで用いられる本発明の電気加熱式触媒
担体２は、図６〜図８に示したように、波箔、平箔の少
なくとも一方の表面に絶縁被膜を形成した金属製の平箔
４と波箔５を重ねて中心電極６の回りに巻回して得られ
る円筒状の金属箔積層体（ハニカム体）７と、このハニ
カム体を内装した金属外筒（ケーシング）１と、この金
属外筒に接続された外部電極８と、この外部電極と前記
中心電極６間に通電する電源９等から構成されている。The electrically heated catalyst carrier 2 of the present invention used here is, as shown in FIGS. 6 to 8, a metal flat foil having an insulating coating formed on at least one surface of a corrugated foil and a flat foil. 4 and corrugated foil 5 are overlapped and wound around the center electrode 6, a cylindrical metal foil laminate (honeycomb body) 7, a metal outer cylinder (casing) 1 in which the honeycomb body is housed, and this metal It is composed of an external electrode 8 connected to the outer cylinder, a power supply 9 for supplying electricity between the external electrode and the center electrode 6, and the like.
【００３２】そして、外部電極と中心電極６間に通電す
ることにより、ハニカム体７に通電し、図２（ａ）に示
すようにハニカム体内に配置した接合部１１を経て螺旋
状に形成された電流路１０で発熱させ、触媒活性化温度
に昇温させ、触媒反応を促進する機能を有している。Then, the honeycomb body 7 is energized by energizing it between the external electrode and the center electrode 6, and a spiral shape is formed through the joint portion 11 arranged in the honeycomb body as shown in FIG. 2 (a). It has a function of generating heat in the current path 10 and raising the temperature to the catalyst activation temperature to promote the catalytic reaction.
【００３３】ここで用いた中心電極６は、図３（ａ）に
示すように中空部６ａを有する管状体であり、ハニカム
体７との温度差を低減して軸方向、半径方向の熱膨張差
を小さくするようにしている。この中心電極の先端部に
は、中間部に熱膨張差を吸収する曲り部１２ｃを形成し
た耐熱金属板からなる電極引出材１２ｏの先端部が接合
されており、この電極引出材のリード線１３を接続した
他端側の係止部１２ｓは、金属外筒（ケーシング）１に
配設した保持部１４において、電気絶縁材１５を介して
挟持され係止体１６により固定されており、電極引出材
１２ｏを保持した電気絶縁材１５と係止体１６間には、
電極引出材１２ｏの半径方向の熱応力を緩和するクッシ
ョン材１７が介在している。The center electrode 6 used here is a tubular body having a hollow portion 6a as shown in FIG. 3 (a), which reduces the temperature difference from the honeycomb body 7 and causes thermal expansion in the axial and radial directions. I try to reduce the difference. The tip of the center electrode is joined to the tip of an electrode lead-out member 12o made of a heat-resistant metal plate having a bent portion 12c formed in the middle to absorb a difference in thermal expansion, and the lead wire 13 of the electrode lead-out member 13 is joined. The engaging portion 12s on the other end side connected to is connected to the holding portion 14 disposed in the metal outer cylinder (casing) 1 via the electric insulating material 15 and fixed by the engaging body 16. Between the electrical insulating material 15 holding the material 12o and the locking body 16,
A cushion material 17 for relaxing the thermal stress in the radial direction of the electrode lead-out material 12o is interposed.
【００３４】この中心電極６ｏと接合された、ハニカム
体７の内周部の少なくとも排ガス流入側端部では、非接
合部７ｏを有する補強接合部７ａを形成して、中心電極
６ｏとハニカム体７との熱膨張差による半径方向の熱応
力を緩和するようにしているため、金属波箔の破断を防
止し耐久性を向上することができる。At least at the exhaust gas inflow side end of the inner peripheral portion of the honeycomb body 7 joined to the center electrode 6o, a reinforcing joint portion 7a having a non-joint portion 7o is formed to form the center electrode 6o and the honeycomb body 7. Since the thermal stress in the radial direction due to the difference in thermal expansion between and is relaxed, it is possible to prevent breakage of the metal corrugated foil and improve durability.
【００３５】なお、図３は、中心電極例を示しており、
前記の実施例では、図３（ａ）の中空部６ａを有する電
極６を用いたが、図３（ｂ）のように、中空で先端部に
例えば軸方向に伸びる複数のスリット６ｂを設けた中心
電極６１、あるいは図３（ｃ）のように先端部に例えば
軸方向に伸びる複数のスリット６ｃを十字形に配置した
中心電極６２などを用いてもよい。Incidentally, FIG. 3 shows an example of the center electrode,
In the above embodiment, the electrode 6 having the hollow portion 6a of FIG. 3A was used, but as shown in FIG. 3B, a plurality of slits 6b that are hollow and extend in the axial direction, for example, are provided at the tip portion. A center electrode 61, or a center electrode 62 having a plurality of axially extending slits 6c arranged in a cross shape as shown in FIG. 3C may be used.
【００３６】また、図４は、電極引出材例を示してお
り、前記の実施例では図４（ａ）のように、中間部に下
向きの曲り部１２ｃを形成した耐熱金属板による電極引
出材１２ｏを用いたが、図４（ｂ）のように、中間部に
横向きの曲り部１２ｃを形成した耐熱金属板による電極
引出材１２ｐ、あるいは図４（ｃ）のような幅方向が水
平になるように固定した耐熱金属板による電極引出材１
２ｈ、図４（ｄ）のような幅方向が上下になるように固
定した耐熱金属板による電極引出材１２ｖなどを用いて
もよい。FIG. 4 shows an example of the electrode lead-out material. In the above-mentioned embodiment, as shown in FIG. 4 (a), the electrode lead-out material is made of a heat-resistant metal plate having a downward bent portion 12c in the middle part. Although 12o is used, as shown in FIG. 4 (b), the electrode lead-out material 12p made of a heat-resistant metal plate having a laterally bent portion 12c formed in the middle portion, or the width direction becomes horizontal as shown in FIG. 4 (c). Electrode drawing material 1 made of heat-resistant metal plate
2h, an electrode lead-out member 12v made of a heat-resistant metal plate fixed so that the width direction is vertical as shown in FIG. 4D may be used.
【００３７】このようにして、中心電極とハニカム体内
周間、電極引出材と金属外筒（ケーシング）間に、熱膨
張吸収構造を形成することができるので、電気加熱式金
属触媒担体を厳しい加熱・冷却の熱サイクルの排ガス条
件下で使用する際に、金属箔と中心電極間、電極引出材
と金属外筒（ケーシング）間の熱膨張差により生ずる熱
応力を軽減でき、中心電極近傍の金属箔の破断、電極引
出材と金属外筒間の電気絶縁材の破損を防止して電気加
熱式金属触媒担体の耐久性を向上することができる。In this way, the thermal expansion absorption structure can be formed between the center electrode and the inner circumference of the honeycomb, and between the electrode lead-out material and the metal outer cylinder (casing), so that the electrically heated metal catalyst carrier is subjected to severe heating.・ When used under the exhaust gas conditions of the cooling heat cycle, it is possible to reduce the thermal stress caused by the difference in thermal expansion between the metal foil and the center electrode, between the electrode drawing material and the metal outer casing (casing), and the metal near the center electrode can be reduced. The durability of the electrically heated metal catalyst carrier can be improved by preventing breakage of the foil and breakage of the electrical insulating material between the electrode drawing material and the metal outer cylinder.
【００３８】なお、前記の実施例は、請求項１〜請求項
６の構成を選択的に組み合わせた請求項８に相当するも
のであるが、本発明では請求項１〜請求項６の構成を同
時に満足させてもよく、また請求項１〜請求項６の構成
をそれぞれ独立させても相応の効果が得られる。The above embodiment corresponds to claim 8 in which the configurations of claims 1 to 6 are selectively combined, but in the present invention, the configurations of claims 1 to 6 are implemented. They may be satisfied at the same time, and even if the configurations of claims 1 to 6 are independent of each other, a corresponding effect can be obtained.
【００３９】[0039]
【発明の効果】本発明においては、中心電極とハニカム
体（金属箔）間、電極引出材と金属外筒（ケーシング）
間に、熱膨張吸収構造を形成するので、電気加熱式金属
触媒担体を厳しい加熱・冷却の熱サイクルの排ガス条件
下で使用する際に、金属箔と中心電極間、中心電極、電
極引出材と金属外筒（ケーシング）間の熱膨張差により
生ずる熱応力を軽減でき、中心電極近傍の金属箔の破断
を防止し、また電極引出材と金属外筒間の電気絶縁材の
破損を防止して電気加熱式金属触媒担体の耐久性を向上
することができる。According to the present invention, between the center electrode and the honeycomb body (metal foil), the electrode lead-out material and the metal outer cylinder (casing).
Since a thermal expansion absorption structure is formed between the metal foil and the center electrode, when the electrically heated metal catalyst carrier is used under exhaust gas conditions of a severe heating / cooling heat cycle, the center electrode, the electrode lead-out material The thermal stress caused by the difference in thermal expansion between the metal outer casings (casings) can be reduced, the metal foil near the center electrode can be prevented from breaking, and the electrical insulating material between the electrode drawing material and the metal outer casing can be prevented from being damaged. The durability of the electrically heated metal catalyst carrier can be improved.
【図１】本発明を採用した電気加熱式触媒装置例を示す
側断面概要説明図。FIG. 1 is a side cross-sectional schematic explanatory view showing an example of an electrically heated catalyst device adopting the present invention.
【図２】（ａ）図は、図１のＡ−Ａ矢視断面概要説明
図、（ｂ）図は（ａ）図のＢ−Ｂ矢視断面概要説明図。2A is a schematic cross-sectional view taken along the line AA of FIG. 1, and FIG. 2B is a schematic cross-sectional view taken along the line BB of FIG. 2A.
【図３】本発明において用いる中心電極例を示す立面概
要説明図。FIG. 3 is a schematic elevational view showing an example of a center electrode used in the present invention.
【図４】本発明において用いる電極引出材例を示す立面
概要説明図。FIG. 4 is a schematic elevational view showing an example of an electrode lead-out material used in the present invention.
【図５】従来の電気加熱式触媒装置例を示す側断面概要
説明図。FIG. 5 is a schematic side sectional view showing an example of a conventional electrically heated catalyst device.
【図６】従来の電気加熱式触媒担体用のハニカム体の形
成例を示す立面概要説明図。FIG. 6 is a schematic elevational view showing an example of forming a conventional honeycomb body for an electrically heated catalyst carrier.
【図７】従来の電気加熱式触媒担体用のハニカム体端面
の平面概要説明図。FIG. 7 is a schematic plan view of an end face of a honeycomb body for a conventional electrically heated catalyst carrier.
【図８】従来の電気加熱式触媒担体用のハニカム体にお
ける電流路形成状態を示す端面平面概要説明図。FIG. 8 is a schematic end face plan view showing a current path formation state in a conventional honeycomb body for an electrically heated catalyst carrier.
１ 筒状ケーシング（金属外筒） ２ 電気加熱式金属触媒担体 ３ 主触媒担体 ４ 金属平箔 ５ 金属波箔 ６Ａ、６、６１、６２ 中心電極 ６ａ 中空部 ６ｂ スリット ６ｃ 十字形スリット ７ ハニカム体 ７ａ 内周強化部 ７ｂ 外周強化部 ７ｏ 非接合部 ８ 外部電極 ９ 電源 １０ 電流路 １１ 接合部 １２、１２ｏ、１２ｐ、１２ｈ、１２ｖ 電極引出材 １２ｓ 係止部 １２ｃ 曲り部 １３ リード線 １４ 保持部 １５ 絶縁材 １６ 係止体 １７ クッション材 1 Cylindrical casing (metal outer cylinder) 2 Electric heating type metal catalyst carrier 3 Main catalyst carrier 4 Metal flat foil 5 Metal corrugated foil 6A, 6, 61, 62 Center electrode 6a Hollow part 6b Slit 6c Cross-shaped slit 7 Honeycomb body 7a Inner circumference strengthening part 7b Outer circumference strengthening part 7o Non-joint part 8 External electrode 9 Power supply 10 Current path 11 Joining part 12, 12o, 12p, 12h, 12v Electrode lead-out material 12s Locking part 12c Bending part 13 Lead wire 14 Holding part 15 Insulation Material 16 Locking body 17 Cushion material
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ０１Ｊ 35/04 ３２１ Ｆ０１Ｎ 3/28 ３１１Ｓ Ｆ０１Ｎ 3/28 ３１１ Ｂ０１Ｄ 53/36 ＺＡＢＣ (72)発明者 四谷 弘毅 東京都千代田区大手町２−６−３ 新日本 製鐵株式会社内 (72)発明者 中島 郁二 千葉県君津市君津１番地 新日本製鐵株式 会社君津製鐵所内 (72)発明者 吉田 和雄 千葉県富津市新富20−１ 新日本製鐵株式 会社技術開発本部内 (72)発明者 小粥 真彦 愛知県豊田市トヨタ町１番地 トヨタ自動 車株式会社内 (72)発明者 桜井 計宏 愛知県豊田市トヨタ町１番地 トヨタ自動 車株式会社内 (72)発明者 下地 浩二 愛知県豊田市トヨタ町１番地 トヨタ自動 車株式会社内─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI Technical indication location B01J 35/04 321 F01N 3/28 311S F01N 3/28 311 B01D 53/36 ZABC (72) Inventor Hiroki Yotsuya 2-6-3 Otemachi, Chiyoda-ku, Tokyo Within Nippon Steel Co., Ltd. (72) Inventor Ikuji Nakajima 1 Kimitsu, Kimitsu-shi, Chiba Inside Nippon Steel Co., Ltd. (72) Inventor Kazuo Yoshida 20-1 Shintomi, Futtsu City, Chiba Prefecture Nippon Steel Co., Ltd. Technical Development Division (72) Inventor Masahiko Kogasu 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Automobile Co., Ltd. (72) Inventor Keiko Sakurai Aichi Toyota-Cho, Toyota-City, Toyota, Japan (72) Inventor Koji Shimoji 1-Cho, Toyota-Cho, Toyota-City, Aichi The Corporation
Claims (8)
筒状に巻き取って得られるハニカム体を金属外筒に収容
してなり、中心電極と外部電極間に電流路を形成した電
気加熱式金属触媒担体において、中心電極を中空体とし
たことを特徴とする電気加熱式金属触媒担体。1. An electric machine in which a honeycomb body obtained by stacking a metal flat foil and a metal corrugated foil on a center electrode in a cylindrical shape is housed in a metal outer cylinder and forming a current path between the center electrode and the outer electrode. An electrically heated metal catalyst carrier, wherein the center electrode is a hollow body.
筒状に巻き取って得られるハニカム体を金属外筒に収容
してなり、中心電極と外部電極間に電流路を形成した電
気加熱式金属触媒担体において、中心電極の先端部にス
リットを設けたことを特徴とする電気加熱式金属触媒担
体。2. An electric machine in which a honeycomb body obtained by stacking a metal flat foil and a metal corrugated foil on a center electrode in a cylindrical shape is housed in a metal outer cylinder and forming a current path between the center electrode and the outer electrode. An electrically heated metal catalyst carrier, characterized in that in the heated metal catalyst carrier, a slit is provided at the tip of the center electrode.
筒状に巻き取って得られるハニカム体を金属外筒に収容
してなり、中心電極と外部電極間に電流路を形成した電
気加熱式金属触媒担体において、中心電極と金属箔およ
び中心電極近傍の金属箔同志の接合部では、少なくとも
ハニカム体の排ガス流入側端部で非接合部を有すること
を特徴とする電気加熱式金属触媒担体。3. An electric machine in which a honeycomb body obtained by stacking a metal flat foil and a metal corrugated foil on a center electrode in a cylindrical shape is housed in a metal outer cylinder, and a current path is formed between the center electrode and the outer electrode. In the heating type metal catalyst carrier, an electrically heating type metal catalyst having a non-bonding part at least at the exhaust gas inflow side end part of the honeycomb body at the bonding part of the center electrode and the metal foil and the metal foil in the vicinity of the center electrode. Carrier.
筒状に巻き取って得られるハニカム体を金属外筒に収容
してなり、中心電極と外部電極間に電流路を形成した電
気加熱式金属触媒担体において、中心電極、および、中
心電極に電気的に接続され電極を金属外筒の外に引き出
す電極引出材を線膨張係数が１０〜１５×１０-6／℃の
耐熱金属板としたことを特徴とする電気加熱式金属触媒
担体。4. An electric machine comprising a metal outer cylinder containing a honeycomb body obtained by stacking a metal flat foil and a metal corrugated foil on a center electrode and winding the metal foil in a cylindrical shape, and forming a current path between the center electrode and the outer electrode. In the heating type metal catalyst carrier, the center electrode and the electrode lead-out material electrically connected to the center electrode and for drawing the electrode out of the metal outer cylinder have a linear expansion coefficient of 10 to 15 × 10 −6 / ° C. An electrically heated metal catalyst carrier characterized in that
筒状に巻き取って得られるハニカム体を金属外筒に収容
してなり、中心電極と外部電極間に電流路を形成した電
気加熱式金属触媒担体において、中心電極および中心電
極に電気的に接続され電極を金属外筒の外に引き出す耐
熱金属板からなる電極引出材に曲り部を形成したことを
特徴とする電気加熱式金属触媒担体。5. An electric machine in which a honeycomb body obtained by stacking a metal flat foil and a metal corrugated foil on a center electrode in a cylindrical shape is housed in a metal outer cylinder and forming a current path between the center electrode and the outer electrode. In the heating type metal catalyst carrier, an electric heating type metal is characterized in that a bent portion is formed in an electrode lead-out member made of a heat-resistant metal plate which is electrically connected to the center electrode and draws the electrode out of the metal outer cylinder. Catalyst carrier.
筒状に巻き取って得られるハニカム体を金属外筒に収容
してなり、中心電極と外部電極間に電流路を形成した電
気加熱式金属触媒担体において、中心電極に電気的に接
続され電極を金属外筒の外に引き出す電極引出材を金属
外筒に絶縁材を介して保持し、この電極引出材の係止部
をクッション材を介して係止体で固定したことを特徴と
する電気加熱式金属触媒担体。6. An electric machine in which a honeycomb body obtained by stacking a metal flat foil and a metal corrugated foil on a center electrode in a cylindrical shape is housed in a metal outer cylinder and forming a current path between the center electrode and the outer electrode. In the heating type metal catalyst carrier, an electrode lead-out material that is electrically connected to the center electrode and draws the electrode out of the metal outer cylinder is held in the metal outer sleeve through an insulating material, and the locking portion of the electrode lead-out material is cushioned. An electrically heated metal catalyst carrier, characterized in that it is fixed with a locking body through a material.
することを特徴とする電気加熱式金属触媒担体。7. An electrically heated metal catalyst carrier having a structure satisfying claims 1 to 6 at the same time.
成を有することを特徴とする電気加熱式金属触媒担体。8. An electrically heated metal catalyst carrier having a structure in which claims 1 to 6 are selectively combined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7131597A JPH08326526A (en) | 1995-05-30 | 1995-05-30 | Electrically heated metallic catalyst carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7131597A JPH08326526A (en) | 1995-05-30 | 1995-05-30 | Electrically heated metallic catalyst carrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08326526A true JPH08326526A (en) | 1996-12-10 |
Family
ID=15061789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7131597A Withdrawn JPH08326526A (en) | 1995-05-30 | 1995-05-30 | Electrically heated metallic catalyst carrier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08326526A (en) |
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|---|---|---|---|---|
| WO2015083313A1 (en) * | 2013-12-04 | 2015-06-11 | トヨタ自動車株式会社 | Electrically heated catalyst device and method for producing same |
| CN111542686A (en) * | 2018-01-12 | 2020-08-14 | 纬湃科技有限责任公司 | Apparatus and method for heating a device for exhaust gas aftertreatment |
| CN111686822A (en) * | 2019-03-15 | 2020-09-22 | 日本碍子株式会社 | Electric heating carrier, exhaust gas purification device, method for producing electric heating carrier, joined body, and method for producing joined body |
| JP2021156185A (en) * | 2020-03-25 | 2021-10-07 | 日本碍子株式会社 | Exhaust gas purification device and electric heating carrier with conductive material |
| CN114174648A (en) * | 2019-08-13 | 2022-03-11 | 纬湃技术有限公司 | Electrically heatable catalytic converter |
| JP2022123833A (en) * | 2021-02-11 | 2022-08-24 | ベンテラー オートモービルテクニック ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | Holder for electric heating disk in exhaust gas aftertreatment device |
-
1995
- 1995-05-30 JP JP7131597A patent/JPH08326526A/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015083313A1 (en) * | 2013-12-04 | 2015-06-11 | トヨタ自動車株式会社 | Electrically heated catalyst device and method for producing same |
| CN111542686A (en) * | 2018-01-12 | 2020-08-14 | 纬湃科技有限责任公司 | Apparatus and method for heating a device for exhaust gas aftertreatment |
| CN111542686B (en) * | 2018-01-12 | 2022-08-19 | 纬湃科技有限责任公司 | Apparatus and method for heating a device for exhaust gas aftertreatment |
| US11549421B2 (en) | 2018-01-12 | 2023-01-10 | Vitesco Technologies GmbH | Apparatus and method for heating a device for exhaust gas after-treatment |
| CN111686822A (en) * | 2019-03-15 | 2020-09-22 | 日本碍子株式会社 | Electric heating carrier, exhaust gas purification device, method for producing electric heating carrier, joined body, and method for producing joined body |
| CN114174648A (en) * | 2019-08-13 | 2022-03-11 | 纬湃技术有限公司 | Electrically heatable catalytic converter |
| JP2021156185A (en) * | 2020-03-25 | 2021-10-07 | 日本碍子株式会社 | Exhaust gas purification device and electric heating carrier with conductive material |
| JP2022123833A (en) * | 2021-02-11 | 2022-08-24 | ベンテラー オートモービルテクニック ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | Holder for electric heating disk in exhaust gas aftertreatment device |
| US11795850B2 (en) | 2021-02-11 | 2023-10-24 | Benteler Automobiltechnik Gmbh | Holder for an electric heating disk in an exhaust gas aftertreatment device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20020806 |