JP2001050029A - Filter regeneration device by microwave for internal combustion engine - Google Patents

Filter regeneration device by microwave for internal combustion engine

Info

Publication number
JP2001050029A
JP2001050029A JP11227024A JP22702499A JP2001050029A JP 2001050029 A JP2001050029 A JP 2001050029A JP 11227024 A JP11227024 A JP 11227024A JP 22702499 A JP22702499 A JP 22702499A JP 2001050029 A JP2001050029 A JP 2001050029A
Authority
JP
Japan
Prior art keywords
exhaust gas
microwave
pipe
filter
internal combustion
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.)
Pending
Application number
JP11227024A
Other languages
Japanese (ja)
Inventor
Tetsuo Kubota
哲男 窪田
Masami Nakamura
正己 中村
Hiroshi Konno
弘 紺野
Yoshiharu Umetsu
芳治 梅津
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Appliances Inc
Original Assignee
Hitachi Home Tech Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Home Tech Ltd filed Critical Hitachi Home Tech Ltd
Priority to JP11227024A priority Critical patent/JP2001050029A/en
Publication of JP2001050029A publication Critical patent/JP2001050029A/en
Pending legal-status Critical Current

Links

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
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/027—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using electric or magnetic heating means
    • F01N3/028—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using electric or magnetic heating means using microwaves

Abstract

PROBLEM TO BE SOLVED: To provide a device that regenerates a filter by microwave power efficiently without interrupting operation of an internal combustion engine. SOLUTION: An exhaust gas inlet pipe 1, exhaust gas exhaust pipe 10, and blast pipe 9 are cylindrical connected with a filter housing 4. Inside diameter and length of the respective pipes are set approximately at or smaller than a cut-off wavelength and at or greater than three wavelengths of microwaves supplied from a microwave generator 7. Accordingly, conventional microwave cut-off means made of metal punched plates disposed in the exhaust gas inlet pipe and exhaust gas exhaust pipe is eliminated.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【産業上の利用分野】本発明は、ディ−ゼル機関の排ガ
ス中に含まれるパティキュレ−トを捕集する内燃機関用
フィルタをマイクロ波電力を使用して再生する装置に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for regenerating a filter for an internal combustion engine for collecting particulates contained in exhaust gas of a diesel engine by using microwave power.

【０００２】[0002]

【従来の技術】ディ−ゼル機関の排出ガス中に含まれる
パティキュレートが環境保護および健康上の理由により
規制されてきている。これに対応して排出ガスを浄化ま
たは濾過する技術として炭化珪素等からなるセラミック
ハニカムフィルタを内燃機関の排気管の途中に設けてパ
ティキュレ−トを捕集する方法が採られている。この方
法では内燃機関の運転によってフィルタ内にパティキュ
レ−トが堆積し、排気管内のガス圧が上昇してディ−ゼ
ル機関の出力を低下させるので、捕集したパティキュレ
−トを定期的に燃焼させて二酸化炭素に変化させて大気
へ放出し、フィルタの再生を行なっている。しかしなが
らディ−ゼル機関からの排出ガス温度はパティキュレー
トを燃焼させるのに十分な温度に達しないので、特許第
２８５６０１６号公報等に見られるようにマイクロ波加
熱手段を用いてパティキュレートを燃焼させてフィルタ
の再生を行なっている。マイクロ波を用いた上記加熱に
おいてはフィルタ再生時、フィルタ収納器に導入したマ
イクロ波電力がフィルタ収納器から内燃機関側に接合さ
れた排出ガス入気管およびフィルタ収納器をはさんで反
対側に接合された排出ガス排気管内に漏洩するのを防止
するため、金属製パンチング板を排出ガス入気管および
排出ガス排気管内に設けてマイクロ波電力を封じてい
る。2. Description of the Related Art The particulate matter contained in the exhaust gas of diesel engines has been regulated for environmental protection and health reasons. In response to this, as a technique for purifying or filtering exhaust gas, a method has been adopted in which a ceramic honeycomb filter made of silicon carbide or the like is provided in the middle of an exhaust pipe of an internal combustion engine to collect particulates. In this method, particulates accumulate in the filter due to the operation of the internal combustion engine, and the gas pressure in the exhaust pipe increases to reduce the output of the diesel engine. Therefore, the collected particulates are periodically burned. The carbon dioxide is converted to carbon dioxide and released to the atmosphere to regenerate the filter. However, since the temperature of the exhaust gas from the diesel engine does not reach a temperature sufficient to burn the particulates, the particulates are burned using microwave heating means as disclosed in Japanese Patent No. 2856016 or the like. The filter is being regenerated. In the above-mentioned heating using microwaves, at the time of filter regeneration, the microwave power introduced into the filter housing is joined to the opposite side across the exhaust gas inlet pipe and the filter housing joined to the internal combustion engine side from the filter housing. In order to prevent leakage into the exhaust gas exhaust pipe, a metal punching plate is provided in the exhaust gas intake pipe and the exhaust gas exhaust pipe to seal microwave power.

【０００３】[0003]

【発明が解決しようとする課題】しかしながら上述した
構成では、金属製パンチング板を排出ガス入気管および
排出ガス排気管内に設けてマイクロ波電力を封じる構成
としているので、この金属製パンチング板マイクロ波遮
蔽手段によって内燃機関からの排出ガスがフィルタ収納
器に流入するとき、あるいはフィルタ収納器から排出ガ
ス排気管に放出されるときに、入、排気抵抗が増え内燃
機関の出力低下等を生じるという問題点があった。However, in the above-described configuration, the metal punching plate is provided in the exhaust gas inlet pipe and the exhaust gas exhaust pipe to seal the microwave power. When exhaust gas from the internal combustion engine flows into the filter housing or is discharged from the filter housing to the exhaust gas exhaust pipe by the means, the input and exhaust resistance increases and the output of the internal combustion engine decreases, etc. was there.

【０００４】[0004]

【課題を解決するための手段】本発明は上記課題を解決
するためになされたもので、内燃機関の運転に障害を与
えることなくマイクロ波電力によって効率よくフィルタ
を再生する装置を提供することを目的としたものであ
り、フィルタ収納器に接続されている排出ガス入気管、
排出ガス排気管および送風管を円筒状の管で構成すると
共に、それぞれの管の内径と長さをほぼマイクロ波発振
器で供給されるマイクロ波の遮断波長以下と３波長以上
の長さにしたことにより、排出ガス入気管、排出ガス排
気管内に設けられた従来の金属製パンチング板マイクロ
波遮蔽手段を除去した。SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide an apparatus for efficiently regenerating a filter using microwave power without impairing the operation of an internal combustion engine. Exhaust gas inlet pipe connected to the filter housing,
The exhaust gas exhaust pipe and the blower pipe are composed of cylindrical pipes, and the inner diameter and length of each pipe are set to be substantially equal to or less than the cut-off wavelength of the microwave supplied by the microwave oscillator and equal to or more than 3 wavelengths. As a result, the conventional metal punching plate microwave shielding means provided in the exhaust gas inlet pipe and the exhaust gas exhaust pipe was removed.

【０００５】[0005]

【作用】上述した構成により、排出ガス入気管、排出ガ
ス排気管および送風管での入、排気抵抗が少なくなると
共に、捕集したパティキュレ−トを燃焼させるためにフ
ィルタ収納器に導入されたマイクロ波電力が排出ガス入
気管、排出ガス排気管および送風管から漏洩するのを阻
止する金属製パンチング板マイクロ波遮蔽手段と同等の
効果を持たせることができるので、入、排気抵抗による
内燃機関の運転出力の低下、排出ガス入気管からの内燃
機関へのマイクロ波漏洩による内燃機関の不調、および
排出ガス排気管からの外部へのマイクロ波漏洩による人
体への被曝等を防止することができる。According to the above-mentioned structure, the resistance of the intake and exhaust of the exhaust gas intake pipe, exhaust gas exhaust pipe and air blow pipe is reduced, and the micro-particles introduced into the filter housing for burning the collected particulates. Since it can have the same effect as the metal punching plate microwave shielding means that prevents the wave power from leaking from the exhaust gas intake pipe, exhaust gas exhaust pipe and air duct, the internal combustion engine by the input and exhaust resistance It is possible to prevent a decrease in operating output, malfunction of the internal combustion engine due to microwave leakage from the exhaust gas intake pipe to the internal combustion engine, and exposure to the human body due to microwave leakage from the exhaust gas exhaust pipe to the outside.

【０００６】[0006]

【実施例】以下本発明の内燃機関用マイクロ波フィルタ
再生装置の一実施例について図１から図３を用いて説明
する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG.

【０００７】図１は本発明の一実施例における内燃機関
用フィルタ再生装置の構成概略図であり、図２は本発明
の一実施例における円筒管の基本モ−ドＨ11における遮
断波長λｃを示したもので、図３は本発明の一実施例に
おけるＨ11モ−ドでの管長Ｌ、長辺および短辺内寸法
ａ、ｂに対する減衰量αを示したものである。[0007] Figure 1 is a block schematic diagram of an internal combustion engine for a filter regeneration apparatus according to an embodiment of the present invention, the basic model of a cylindrical tube in one embodiment of Figure 2 the present invention - the cut-off wavelength λc at node H 11 an illustration, FIG. 3 H 11 mode in an embodiment of the present invention - illustrates the tube length in de L, long sides and short sides in the dimensions a, attenuation with respect to b alpha.

【０００８】図１において１は排出ガスが通過する排出
ガス入気管であり、２は運転により排出ガスを発生する
内燃機関で、３はセラミックハニカムからなるフィルタ
である。４はこのフィルタ３が収納される金属製フィル
タ収納器であり、５はこのフィルタ収納器に開設した、
マイクロ波電力を供給するためのマイクロ波供給口で、
６はこのマイクロ波供給口５にマイクロ波電力を導く金
属製の導波管である。７はこの導波管６に接続された、
マイクロ波電力を発生するマイクロ波発振器であり、８
はこのマイクロ波発振器を動作させるための電源で、９
はフィルタ収納器４内に空気を流入させるためにフィル
タ収納器４の一部に接合した送風管であり、１０はフィ
ルタ３内で発生する二酸化炭素等を排出するためにフィ
ルタ収納器４に接合した排出ガス排気管である。マイク
ロ波加熱によってフィルタ再生時に送風管９から取り込
まれる空気は、例えばブロワーなどで強制的に送り込む
構成となっている。ここで、排出ガス入気管１、送風管
９、排出ガス排気管１０はいずれも金属製の円筒管で管
の内径Ｄと長さＬがマイクロ波発振器で供給されるマイ
クロ波の遮断波長以下と自由空間波長の３波長以上の長
さに設定している。In FIG. 1, reference numeral 1 denotes an exhaust gas intake pipe through which exhaust gas passes, 2 denotes an internal combustion engine that generates exhaust gas by operation, and 3 denotes a filter made of a ceramic honeycomb. Reference numeral 4 denotes a metal filter housing in which the filter 3 is housed, and reference numeral 5 denotes an opening in the filter housing.
A microwave supply port for supplying microwave power,
Reference numeral 6 denotes a metal waveguide for guiding microwave power to the microwave supply port 5. 7 is connected to this waveguide 6,
It is a microwave oscillator that generates microwave power.
Is a power supply for operating this microwave oscillator.
Reference numeral 10 denotes a blower tube joined to a part of the filter container 4 to allow air to flow into the filter container 4, and reference numeral 10 denotes a blower tube joined to the filter container 4 to discharge carbon dioxide and the like generated in the filter 3. Exhaust gas exhaust pipe. The air taken in from the blower tube 9 at the time of filter regeneration by microwave heating is forcibly sent in by, for example, a blower. Here, each of the exhaust gas inlet pipe 1, the blower pipe 9, and the exhaust gas exhaust pipe 10 is a metal cylindrical pipe, and the inner diameter D and the length L of the pipe are smaller than the cut-off wavelength of the microwave supplied by the microwave oscillator. The length is set to three or more free space wavelengths.

【０００９】上述の構成において、内燃機関２が運転さ
れるとその排出ガスは排出ガス入気管１を通ってフィル
タ収納器４に導かれる。このとき排出ガス中に含まれる
カーボン微粒子等からなるパティキュレ−トは、フィル
タ収納器４に設けられている炭化珪素を主成分とするセ
ラミックハニカムで構成されたフィルタ３によって補足
される。そしてパティキュレ−トの除去されたクリーン
な排出ガスが排出ガス排気管１０を通って大気中に放出
される。In the above configuration, when the internal combustion engine 2 is operated, the exhaust gas is guided to the filter housing 4 through the exhaust gas inlet pipe 1. At this time, the particulates composed of carbon fine particles and the like contained in the exhaust gas are supplemented by the filter 3 provided in the filter housing 4 and composed of a ceramic honeycomb containing silicon carbide as a main component. The clean exhaust gas from which particulates have been removed is discharged into the atmosphere through the exhaust gas exhaust pipe 10.

【００１０】ところが、内燃機関を長時間運転するとフ
ィルタ３では排出ガス中に含まれているパティキュレ−
トが堆積して目詰まりを起こす。そこで、フィルタ再生
のために定期的にマイクロ波電力をフィルタ収納器４に
照射する方法で加熱し、パティキュレ−トを二酸化炭素
に変換して大気中に放出する方法が採られており、この
動作は次のように行なわれる。マイクロ波発振器７で発
生したマイクロ波電力は導波管６を通ってマイクロ波供
給口５からフィルタ収納器４に導かれる。フィルタ収納
器４に導かれたマイクロ波電力はフィルタ３に堆積して
いるカーボン微粒子を主成分とするパティキュレ−トに
照射されてこれを加熱し、送風管９から取り込まれた空
気によって二酸化炭素として排出ガス排気管１０から大
気に放出される。このとき、フィルタ収納器４に接続さ
れている排出ガス入気管１、排出ガス排気管１０および
送風管９を円筒状の管で構成すると共に、それぞれの管
の内径Ｄと長さＬをほぼマイクロ波発振器７で供給され
るマイクロ波の遮断波長以下と３波長以上の長さとして
いるので、排出ガス入気管１、排出ガス排気管１０内に
設けられていた従来の金属製パンチング板マイクロ波遮
蔽手段と同様のマイクロ波遮蔽機能を有し、マイクロ波
電力がそれぞれの管から大気中に漏洩することはない。However, when the internal combustion engine is operated for a long time, the particulates contained in the exhaust gas in the filter 3 are reduced.
Deposits and clogging. Therefore, a method has been adopted in which heating is performed by periodically irradiating the microwave power to the filter housing 4 for the regeneration of the filter, and the particulates are converted into carbon dioxide and released into the atmosphere. Is performed as follows. Microwave power generated by the microwave oscillator 7 is guided from the microwave supply port 5 to the filter housing 4 through the waveguide 6. The microwave power guided to the filter housing 4 irradiates a particulate composed mainly of carbon fine particles deposited on the filter 3 to heat it, and is converted into carbon dioxide by air taken in from a blower pipe 9. The exhaust gas is discharged from the exhaust pipe 10 to the atmosphere. At this time, the exhaust gas inlet pipe 1, the exhaust gas exhaust pipe 10, and the blower pipe 9 connected to the filter container 4 are constituted by cylindrical pipes, and the inner diameter D and length L of each pipe are substantially micro Since the length of the microwave supplied from the wave oscillator 7 is shorter than or equal to the cutoff wavelength and longer than or equal to three, the conventional metal punching plate microwave shield provided in the exhaust gas inlet pipe 1 and the exhaust gas exhaust pipe 10 is used. It has a microwave shielding function similar to that of the means, and microwave power does not leak from each tube to the atmosphere.

【００１１】ここで、排出ガス入気管１、排出ガス排気
管１０および送風管９のマイクロ波電力を遮蔽する具体
的な内径Ｄと長さＬを次に示す。フィルタ再生用に用い
られるマイクロ波発振器の発振周波数２４５０（ＭＨ
ｚ）での円筒管の基本モードＨ11における遮断波長λｃ
は図２に示すようになる。また図３はＨ11モードでの管
長Ｌが３波長における管内径Ｄに対する減衰量αを示し
ている。Here, the specific inner diameter D and length L of the exhaust gas inlet pipe 1, the exhaust gas exhaust pipe 10, and the blower pipe 9 for shielding microwave power are shown below. Oscillation frequency 2450 (MH) of a microwave oscillator used for filter regeneration
cut-off wavelength λc in the fundamental mode H 11 of the cylindrical tube at z)
Is as shown in FIG. The Figure 3 is the pipe length L in H 11 mode indicates an attenuation α for inner tube diameter D at three wavelengths.

【００１２】図２と図３から最も遮断波長λｃの小さい
Ｈ11モードでの寸法をほぼ７．０（ｃｍ）以下にそれぞ
れの管内径Ｄを選び、その時の管長Ｌはほぼ３波長分の
３６．６（ｍｍ）以上に選んでおけば、マイクロ波電力
は３０（ｄｂ）以上の十分な減衰量が得られ、マイクロ
波電力がそれぞれの管から大気中に漏洩することはな
い。[0012] Figures 2 and 3 to select approximately 7.0 (cm) each tube inner diameter D below the size of a small H 11 mode most cutoff wavelength λc from 36 tube length L is approximately 3 wavelengths at that time If it is selected to be .6 (mm) or more, a sufficient attenuation of the microwave power of 30 (db) or more is obtained, and the microwave power does not leak from each tube to the atmosphere.

【００１３】[0013]

【発明の効果】以上説明したように本発明の内燃機関用
フィルタ再生装置によれば次のような効果が得られる。As described above, according to the filter regeneration device for an internal combustion engine of the present invention, the following effects can be obtained.

【００１４】フィルタ収納器に接続されている排出ガス
入気管、排出ガス排気管および送風管を円筒状の管で構
成すると共に、それぞれの管の内径Ｄと長さＬをほぼマ
イクロ波発振器で供給されるマイクロ波の遮断波長以下
と３波長以上の長さにすることにより、排出ガス入気
管、排出ガス排気管内に設けられた従来の金属製パンチ
ング板マイクロ波遮蔽手段を除去する事ができ、排出ガ
ス入気管、排出ガス排気管および送風管での入、排気抵
抗が少なくなり、入、排気抵抗による内燃機関の運転出
力の低下を防止できるとともに、排出ガス入気管からの
内燃機関へのマイクロ波漏洩による内燃機関の不調、お
よび排出ガス排気管からの外部へのマイクロ波漏洩によ
る人体への被曝等を防止する。The exhaust gas intake pipe, exhaust gas exhaust pipe and air blow pipe connected to the filter container are constituted by cylindrical pipes, and the inner diameter D and length L of each pipe are supplied substantially by a microwave oscillator. By setting the length to be equal to or less than the cut-off wavelength of the microwave to be performed and to be equal to or more than 3 wavelengths, it is possible to eliminate the conventional metal punching plate microwave shielding means provided in the exhaust gas inlet pipe and the exhaust gas exhaust pipe, Inlet and exhaust resistance at the exhaust gas intake pipe, exhaust gas exhaust pipe, and air blower pipe is reduced, preventing the internal output of the internal combustion engine from lowering due to the input and exhaust resistance. It is possible to prevent malfunction of the internal combustion engine due to wave leakage and exposure to the human body due to microwave leakage from the exhaust gas exhaust pipe to the outside.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の一実施例の内燃機関用フィルタ再生装
置の構成概略図である。FIG. 1 is a schematic configuration diagram of a filter regeneration device for an internal combustion engine according to one embodiment of the present invention.

【図２】本発明の一実施例の円筒管において基本モ−ド
における遮断波長を示したものである。FIG. 2 shows a cutoff wavelength in a basic mode in a cylindrical tube according to an embodiment of the present invention.

【図３】本発明の一実施例のＨ11モ−ドでの管長Ｌおよ
び管内径Ｄに対する減衰量αを示したものである。[Figure 3] H 11 in an embodiment of the present invention motor - shows the attenuation α for tube length L and inner tube diameter D in de.

【符号の説明】[Explanation of symbols]

１ 排出ガス入気管 ２ 内燃機関 ３ フィルタ ４ フィルタ収納器 ５ マイクロ波供給口 ６ 導波管 ７ マイクロ波発振器 ８ 電源 ９ 送風管 １０ 排出ガス排気管 DESCRIPTION OF SYMBOLS 1 Exhaust gas inlet pipe 2 Internal combustion engine 3 Filter 4 Filter container 5 Microwave supply port 6 Waveguide 7 Microwave oscillator 8 Power supply 9 Blower pipe 10 Exhaust gas exhaust pipe

───────────────────────────────────────────────────── フロントページの続き (72)発明者 梅津 芳治 千葉県柏市新十余二３番地１ 株式会社日 立ホームテック内 Ｆターム(参考） 3G090 AA02 BA04 CB18  ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshiharu Umezu 3-1, Shinjuyoji, Kashiwa-shi, Chiba F-term in Hitachi Home Tech Co., Ltd. 3G090 AA02 BA04 CB18

Claims (1)

【特許請求の範囲】[Claims] ディーゼル機関の排出ガス通路の一部に設けられて排出
ガス中のカーボン微粒子をトラップするフィルタ（３）
と、このフィルタを固定支持するための金属製のフィル
タ収納器（４）と、このフィルタ収納器の内燃機関側に
接合された排出ガス入気管（１）と、前記フィルタ収納
器において前記排出ガス入気管の反対側に接合された排
出ガス排気管（１０）と、前記フィルタにトラップされ
た排出ガス中のカーボン微粒子等からなるパティキュレ
ートをマイクロ波加熱するためのマイクロ波発振器
（７）と、前記フィルタ収納器に設けられたマイクロ波
供給口（５）と、前記マイクロ波発振器から発生したマ
イクロ波電力を前記マイクロ波供給口に導くための導波
管（６）と、加熱に必要な空気を供給するために前記フ
ィルタ収納器に設けられた送風管（９）とを備えたもの
において、前記排出ガス入気管および前記排出ガス排気
管および前記送風管を円筒状の管で構成すると共にそれ
ぞれの管の内径Ｄをマイクロ波発振器で供給されるマイ
クロ波の遮断波長以下、管長Ｌは少なくとも３波長以上
の長さにしたことを特徴とする内燃機関用マイクロ波フ
ィルタ再生装置。A filter provided in a part of the exhaust gas passage of the diesel engine to trap carbon fine particles in the exhaust gas (3)
A metal filter housing (4) for fixedly supporting the filter, an exhaust gas inlet pipe (1) joined to the filter housing on the side of the internal combustion engine, and the exhaust gas in the filter housing. An exhaust gas exhaust pipe (10) joined to the opposite side of the intake pipe, and a microwave oscillator (7) for microwave heating particulates made of carbon fine particles and the like in the exhaust gas trapped by the filter; A microwave supply port (5) provided in the filter container, a waveguide (6) for guiding microwave power generated from the microwave oscillator to the microwave supply port, and air necessary for heating. And a blower pipe (9) provided in the filter housing for supplying the exhaust gas, the exhaust gas inlet pipe, the exhaust gas exhaust pipe, and the blower pipe. A micro tube for an internal combustion engine, wherein the micro tube is constituted by cylindrical tubes, and the inner diameter D of each tube is set to be equal to or less than a cut-off wavelength of a microwave supplied by a microwave oscillator, and the tube length L is set to be at least three wavelengths or more. Wave filter regeneration device.
JP11227024A 1999-08-11 1999-08-11 Filter regeneration device by microwave for internal combustion engine Pending JP2001050029A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11227024A JP2001050029A (en) 1999-08-11 1999-08-11 Filter regeneration device by microwave for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11227024A JP2001050029A (en) 1999-08-11 1999-08-11 Filter regeneration device by microwave for internal combustion engine

Publications (1)

Publication Number Publication Date
JP2001050029A true JP2001050029A (en) 2001-02-23

Family

ID=16854329

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11227024A Pending JP2001050029A (en) 1999-08-11 1999-08-11 Filter regeneration device by microwave for internal combustion engine

Country Status (1)

Country Link
JP (1) JP2001050029A (en)

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