JPH0610127Y2 - Electric heater for regeneration of exhaust gas aftertreatment device - Google Patents
Electric heater for regeneration of exhaust gas aftertreatment deviceInfo
- Publication number
- JPH0610127Y2 JPH0610127Y2 JP12697787U JP12697787U JPH0610127Y2 JP H0610127 Y2 JPH0610127 Y2 JP H0610127Y2 JP 12697787 U JP12697787 U JP 12697787U JP 12697787 U JP12697787 U JP 12697787U JP H0610127 Y2 JPH0610127 Y2 JP H0610127Y2
- Authority
- JP
- Japan
- Prior art keywords
- heater
- exhaust gas
- electric heater
- regeneration
- ceramic filter
- 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.)
- Expired - Lifetime
Links
Description
【考案の詳細な説明】 （産業上の利用分野） 本考案は、ディーゼルエンジン等の排出ガス後処理装置
の再生用電気ヒータに関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an electric heater for regeneration of an exhaust gas aftertreatment device for a diesel engine or the like.
（従来技術） 従来、たとえば第３図に示すように、ディーゼルエンジ
ン１から排出される粒子状物質：パティキュレート(Pc
t)をフィルタで捕集して再燃焼させる排出ガス後処理装
置２が種々開発されている。(Prior Art) Conventionally, for example, as shown in FIG. 3, particulate matter discharged from the diesel engine 1 is: particulate matter (Pc
Various exhaust gas aftertreatment devices 2 for collecting t) by a filter and reburning it have been developed.
この排ガス後処理装置２は、排出ガス経路３に配設され
たキャニング容器４内に、電気ヒータ５とセラミックフ
ィルタ６を直列に併設して構成されており、通常はセラ
ミックフィルタ６によってPctを捕集して排出ガスを浄
化する。This exhaust gas post-treatment device 2 is configured by installing an electric heater 5 and a ceramic filter 6 in series in a canning container 4 arranged in an exhaust gas passage 3. Normally, the ceramic filter 6 captures Pct. Collect and purify exhaust gas.
このPctの捕集により目詰りしたセラミックフィルタ６
は、電気ヒータ５に通電して加熱（600℃以上）するこ
とによりPctが再燃焼されて再生される。このセラミッ
クフィルタ６の再生時は、キャニング容器４内に再生用
エアポンプ７を介してエアが実線の矢印で示すように流
入されPctの設焼が促進される。なお、このセラミック
フィルタ再生時における排出ガスは、切換バルブ８の作
動によって後処理装置２を迂回するバイパス経路９を通
して、破線の矢印で示すようにマフラ10に向けて排出さ
れる。Ceramic filter 6 clogged by this Pct collection
The Pct is reburned and regenerated by heating the electric heater 5 (600 ° C. or higher). When the ceramic filter 6 is regenerated, air is introduced into the canning vessel 4 through the regeneration air pump 7 as indicated by a solid arrow to accelerate firing of Pct. The exhaust gas at the time of regenerating the ceramic filter is exhausted toward the muffler 10 through the bypass path 9 that bypasses the post-treatment device 2 by the operation of the switching valve 8 as shown by the dashed arrow.
（考案が解決しようとする問題点） ところで、上記従来の排出ガス後処理装置の再生用電気
ヒータは、その発熱部の発熱量がその全面に亘って略均
一となるように構成されていた。(Problems to be Solved by the Invention) By the way, the electric heater for regeneration of the conventional exhaust gas post-treatment device is configured so that the heat generation amount of its heat generating portion is substantially uniform over the entire surface thereof.
このため、上記従来の電圧ヒータは、これを加熱した
際、自然対流によりセラミックフィルタの上部のみが多
く加熱される。したがって、この電気ヒータでは、セラ
ミックフィルタの上部のみが再生され、フィルタの下部
は再生されずにPctが残留し易くなるため、セラミック
フィルタの再生インターバルが短かくなる問題があっ
た。Therefore, when the conventional voltage heater is heated, only the upper part of the ceramic filter is heated much by natural convection. Therefore, in this electric heater, only the upper portion of the ceramic filter is regenerated, and the lower portion of the filter is not regenerated, and Pct is likely to remain, which causes a problem that the regeneration interval of the ceramic filter becomes short.
（問題点を解決するための手段） 本考は上述の問題点を解決するために、上記排出ガス後
処理装置において、上記電気ヒータの発熱部を、上記キ
ャニング容器の上部と下部に対応する上部ヒータと下部
ヒータとからなる２つに分割された発熱部で構成すると
ともに、上記上部ヒータの発熱量よりも大きな発熱量の
ヒータで上記下部ヒータを形成した構成とする。(Means for Solving Problems) In order to solve the above problems, the present invention is directed to the exhaust gas post-treatment device in which the heat generating portion of the electric heater is disposed above and below the canning container. The heater is composed of a heater and a lower heater, which are divided into two, and the lower heater is formed of a heater having a heat generation amount larger than that of the upper heater.
（作用） 本考案による排出ガス後処理装置の再生用ヒータは、そ
の発熱部の発熱量がキャニング容器の下部の方が上部よ
りも大きいので、このキャニング容器内で自然対流が生
じても、セラミックフィルタの全体を略均一に加熱す
る。(Operation) In the heater for regeneration of the exhaust gas aftertreatment device according to the present invention, the heating value of the heating portion of the lower part of the canning container is larger than that of the upper part, so even if natural convection occurs in the canning container, The entire filter is heated almost uniformly.
（実施例） 本考案が実施される排出ガス後処理装置２は、たとえば
第１図に示すように、従来装置と同様、排出ガス経路３
に配設されたキャニング容器４内に、電気ヒータ５と、
セラミックフィルタ６を直列に併設して構成されてい
る。(Embodiment) The exhaust gas post-treatment device 2 in which the present invention is implemented is, for example, as shown in FIG.
An electric heater 5 in a canning container 4 arranged in
The ceramic filters 6 are arranged side by side in series.
セラミックフィルタ６は、周知のように、排出ガス中に
含まれるPctを捕集して排出ガスを浄化する。As is well known, the ceramic filter 6 collects Pct contained in the exhaust gas and purifies the exhaust gas.
電気ヒータ５は、たとえば、第２図に示すように、その
発熱部5aが、キャニング容器４の上部4Aと下部4Bに対応
する上部ヒータ5Aと、下部ヒータ5Bとからなる２つに分
割された発熱部で構成されている。また、この下部ヒー
タ5Bの発熱量WA(KW)は、上部ヒータ5Aを発熱量WB(KW)よ
りも大きくなるように予め設定されている。ここで、上
部ヒータ5A、および下部ヒータ5Bの発熱量は、キャニン
グ容器４の断面積や排出ガスの流量等に基づいて、セラ
ミックフィルタ６の全面が略均等に加熱される値に、そ
れぞれ予め実験的に決定される。For example, as shown in FIG. 2, the electric heater 5 has its heating portion 5a divided into two parts, an upper heater 5A corresponding to the upper part 4A and lower part 4B of the canning vessel 4, and a lower heater 5B. It is composed of a heat generating part. Further, the heat generation amount W A (KW) of the lower heater 5B is preset so as to be larger than the heat generation amount W B (KW) of the upper heater 5A. Here, the calorific values of the upper heater 5A and the lower heater 5B are preliminarily tested to a value at which the entire surface of the ceramic filter 6 is heated substantially evenly based on the cross-sectional area of the canning vessel 4, the flow rate of exhaust gas, and the like. To be decided.
上述のように構成された電気ヒータ５は、通電により加
熱された際に発熱が、上部ヒータ5Aよりも下部ヒータ5B
の方が大きくなる。この結果、キャニング容器４内の自
然対流により、キャニング容器４内の上部の温度が上昇
されるも、セラミックフィルタ６の全面での温度が略均
一となり、セラミックフィルタ６のPctがその上下部共
に燃焼されセラミックフィルタ６の再生が良好に行なわ
れる。The electric heater 5 configured as described above generates less heat when heated by energization, and lower heater 5B than upper heater 5A.
Is bigger. As a result, although the temperature of the upper part in the canning container 4 is raised by natural convection in the canning container 4, the temperature on the entire surface of the ceramic filter 6 becomes substantially uniform, and Pct of the ceramic filter 6 burns at both upper and lower parts thereof. Thus, the ceramic filter 6 is properly regenerated.
（考案の効果） 本考案による排出ガス後処理装置の再生用電気ヒータ
は、セラミックフィルタの加熱再生を均一にでき、かつ
その再生インターバルを長くすることができるので、再
生用電気ヒータの電力消費量の経減や、耐久性の向上を
図ることができる。(Effects of the Invention) The electric heater for regeneration of the exhaust gas aftertreatment device according to the present invention can uniformly heat and regenerate the ceramic filter and can lengthen the regeneration interval. Can be reduced and durability can be improved.
第１図は本考案の一実施例の概略平面図、第２図は上記
実施例の要部断面図、第３図は従来の排出ガス後処理装
置の概略図である。 ２……排出ガス後処理装置、３……排出ガス経路、４…
…キャニング容器、５……電気ヒータ、5A……上部ヒー
タ、5B……下部ヒータ、5a……発熱部、６……セラミッ
クフィルタ、７……再生用エアポンプ、８……切換バル
ブ、９……バイパス経路。FIG. 1 is a schematic plan view of an embodiment of the present invention, FIG. 2 is a cross-sectional view of an essential part of the above embodiment, and FIG. 3 is a schematic view of a conventional exhaust gas post-treatment device. 2 ... Exhaust gas aftertreatment device, 3 ... Exhaust gas path, 4 ...
… Canning container, 5 …… Electric heater, 5A …… Upper heater, 5B …… Lower heater, 5a …… Heating part, 6 …… Ceramic filter, 7 …… Regeneration air pump, 8 …… Switching valve, 9 …… Bypass route.
───────────────────────────────────────────────────── フロントページの続き (72)考案者 武田 信章 東京都港区芝５丁目33番８号 三菱自動車 工業株式会社内 (72)考案者 熊谷 保昭 東京都港区芝５丁目33番８号 三菱自動車 工業株式会社内 (72)考案者 須藤 晴男 神奈川県川崎市中原区宮内19番地の５ 日 吉電装株式会社内 (56)参考文献 実開 昭59−167908（ＪＰ，Ｕ) 実公 平２−18276（ＪＰ，Ｙ２) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Nobuaki Takeda 5-3-8 Shiba, Minato-ku, Tokyo Mitsubishi Motors Corporation (72) Inventor Yasuaki Kumagai 5-33-8 Shiba, Minato-ku, Tokyo Mitsubishi Motors Co., Ltd. (72) Creator Haruo Sudo 5th day, 19th Miyauchi, Nakahara-ku, Kawasaki-shi, Kanagawa Yoshidiso Co., Ltd. (56) References -18276 (JP, Y2)
Claims (1)
器内に、電気ヒータとセラミックフィルタを直列に併設
してなる後処理装置において、上記電気ヒータの発熱部
を上記キャニング容器の上部と下部に対応する上部ヒー
タと下部ヒータとからなる２つに分割された発熱部で構
成するとともに、上記上部ヒータの発熱量よりも大きな
発熱量のヒータで上記下部ヒータを形成してなる排出ガ
ス後処理装置の再生用電気ヒータ。1. A post-processing apparatus comprising an electric heater and a ceramic filter arranged in series in a canning container arranged in an exhaust gas passage, wherein a heat generating portion of the electric heater is provided above and below the canning container. The exhaust gas post-treatment is composed of a heating portion divided into two parts, an upper heater and a lower heater corresponding to the above, and the lower heater is formed by a heater having a heating value larger than that of the upper heater. Electric heater for device regeneration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12697787U JPH0610127Y2 (en) | 1987-08-21 | 1987-08-21 | Electric heater for regeneration of exhaust gas aftertreatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12697787U JPH0610127Y2 (en) | 1987-08-21 | 1987-08-21 | Electric heater for regeneration of exhaust gas aftertreatment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6432411U JPS6432411U (en) | 1989-03-01 |
| JPH0610127Y2 true JPH0610127Y2 (en) | 1994-03-16 |
Family
ID=31378982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12697787U Expired - Lifetime JPH0610127Y2 (en) | 1987-08-21 | 1987-08-21 | Electric heater for regeneration of exhaust gas aftertreatment device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0610127Y2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8906523B2 (en) | 2008-08-11 | 2014-12-09 | Infinite Power Solutions, Inc. | Energy device with integral collector surface for electromagnetic energy harvesting and method thereof |
| US9334557B2 (en) | 2007-12-21 | 2016-05-10 | Sapurast Research Llc | Method for sputter targets for electrolyte films |
| US9532453B2 (en) | 2009-09-01 | 2016-12-27 | Sapurast Research Llc | Printed circuit board with integrated thin film battery |
-
1987
- 1987-08-21 JP JP12697787U patent/JPH0610127Y2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9334557B2 (en) | 2007-12-21 | 2016-05-10 | Sapurast Research Llc | Method for sputter targets for electrolyte films |
| US8906523B2 (en) | 2008-08-11 | 2014-12-09 | Infinite Power Solutions, Inc. | Energy device with integral collector surface for electromagnetic energy harvesting and method thereof |
| US9532453B2 (en) | 2009-09-01 | 2016-12-27 | Sapurast Research Llc | Printed circuit board with integrated thin film battery |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6432411U (en) | 1989-03-01 |
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