JPH0385314A - Exhaust gas dust collecting device for diesel engine - Google Patents
Exhaust gas dust collecting device for diesel engineInfo
- Publication number
- JPH0385314A JPH0385314A JP1220172A JP22017289A JPH0385314A JP H0385314 A JPH0385314 A JP H0385314A JP 1220172 A JP1220172 A JP 1220172A JP 22017289 A JP22017289 A JP 22017289A JP H0385314 A JPH0385314 A JP H0385314A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- case
- pellets
- soot
- diesel engine
- 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
Links
- 239000000428 dust Substances 0.000 title 1
- 239000008188 pellet Substances 0.000 claims abstract description 38
- 239000004071 soot Substances 0.000 claims description 34
- 238000003756 stirring Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 31
- 239000002184 metal Substances 0.000 description 5
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 5
- 239000000446 fuel Substances 0.000 description 4
- 239000010419 fine particle Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
Landscapes
- Processes For Solid Components From Exhaust (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はディーゼルエンジンの排気ガス中に含まれる煤
等の微粒子を捕集し大気中への煤の放出を減少させる装
置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for collecting particulates such as soot contained in the exhaust gas of a diesel engine and reducing the release of soot into the atmosphere.
ディーゼルエンジンは一般に、その排気ガス中に未燃焼
のカーボン微粒子を主体とした煤を含んでおり、この煤
が運転状態によっては多量に発生して黒煙となって大気
中に放出されるため、−酸化炭素（Ｃ○）や窒素酸化物
（ＮＯＸ）等の有毒排出物と共に大気汚染の原因となっ
ている。このため最近はディーゼルエンジンの排気管の
途中にフィルタ等の濾過装置を取付けて排気ガス中の煤
を捕集し、大気中に放出される煤の量を低減させること
が行われている。Diesel engines generally contain soot, mainly composed of unburned carbon particles, in their exhaust gas, and depending on the operating conditions, large amounts of this soot are generated and emitted into the atmosphere as black smoke. - Together with toxic emissions such as carbon oxide (CO) and nitrogen oxides (NOX), they are a cause of air pollution. For this reason, recently, a filtration device such as a filter is installed in the middle of the exhaust pipe of a diesel engine to collect soot in the exhaust gas, thereby reducing the amount of soot released into the atmosphere.
例えば特公昭６３−６０２１２号公報にはこのような煤
の捕集装置が開示されており、同装置は第２図に示すよ
うに、ディーゼルエンジン１の排気管２の途中にペレッ
ト型のフィルタ３が収納され、フィルタハウジング内の
フィルタ上流側にはフィルタ３に向けてバーナ４が設け
られ、このバーナ４にはディーゼルエンジン燃料タンク
（図示しない〉からバーナ４に燃料を圧送するツユエル
ポンプ５及び燃焼用空気を供給するエアポンプ６が接続
され、制御回路７によりバーナ運転の制御を行うように
なっている。このようなペレット型のフィルタを用いた
捕集装置においては使用中フィルタが捕集した煤により
目詰りを起すため、フィルタ部での圧力損失が大きくな
り、ディーゼルエンジンの排気抵抗が増しエンジン性能
に悪影響を及ぼすので、上記制御回路７は、車両の走行
距離や走行時間等に基づいて定期的にツユエルポンプ５
とエアポンプ６を駆動し、着火装置によりバーナ４に点
火しフィルタ３に向けて火炎を噴射し、フィルタ３を加
熱して捕集された煤を燃焼させてフィルタ３の再生を行
うようにしている。なおフィルタ再生中には排気管のフ
ィルタ入口に設けた切換弁８が制御回路７の信号により
切換えられエンジンからの排気ガスをバイパス通路９に
逃がすようになっている。For example, Japanese Patent Publication No. 63-60212 discloses such a soot collection device, and as shown in FIG. A burner 4 is provided on the upstream side of the filter in the filter housing facing the filter 3, and this burner 4 includes a fuel pump 5 for pressure-feeding fuel from a diesel engine fuel tank (not shown) to the burner 4, and a fuel pump 5 for combustion. An air pump 6 that supplies air is connected, and the burner operation is controlled by a control circuit 7.In a collection device using such a pellet-type filter, the soot collected by the filter during use Due to clogging, the pressure loss in the filter becomes large, which increases the exhaust resistance of the diesel engine and adversely affects engine performance. Tsuyuel Pump 5
The air pump 6 is driven, and the ignition device ignites the burner 4 to inject flame toward the filter 3, heating the filter 3 and burning the collected soot to regenerate the filter 3. . During filter regeneration, a switching valve 8 provided at the filter inlet of the exhaust pipe is switched by a signal from a control circuit 7 to release exhaust gas from the engine to a bypass passage 9.
上記のように従来公知の捕集装置はフィルタを再生使用
するため、バーナやエアポンプ、ツユエルポンプ、制御
回路等が必要であり構造的に複雑で装置自体も高価とな
るという問題があり、本出願人はこのような問題を解決
すべく、安価で構造の簡単なカートリッジ交換式の捕集
装置を提案したく特願平１−７８６６７号参照〉。As mentioned above, since the conventionally known collection device reuses the filter, it requires a burner, an air pump, a fuel pump, a control circuit, etc., and has a problem that it is structurally complex and the device itself is expensive. In order to solve these problems, we would like to propose a cartridge-replaceable collection device that is inexpensive and has a simple structure, see Japanese Patent Application No. 1-78667.
この捕集装置は、第３図に示すように、捕集装置１１の
本体中央の円管状排気ガス通路１２を軸線方向に貫通し
た構造とし、この排気ガス通路１２の一端は接続部１３
を介してエンジンの排気管１４の出口に取着し、排気ガ
ス通路１２内の排気管接続部１３には通路中心を通る金
属棒ステー１５が通路を横断して壁面に固定され、ステ
ー１５上の通路中央部には金属製プロペラ１６が回転自
在に取付けられ、また排気ガス通路１２の壁面は排気ガ
ス通路１２中の排気ガスの流れ方向に対して一定の角度
を持った多数の細管が放射状に配置されるよう薄い金属
製のハニカム構造の厚板を排気ガス通路１２の周りに巻
き付け、ハニカムを構成する細管の一端が排気ガス通路
１２に、他端が本体外周部で大気に開口するようになっ
ており、ハニカム構造壁１７を保護するため両側に金属
製の外板１８．１９が設けられている。As shown in FIG. 3, this collection device has a structure in which a circular tubular exhaust gas passage 12 at the center of the main body of the collection device 11 is passed through in the axial direction, and one end of this exhaust gas passage 12 is connected to a connecting portion 13.
A metal rod stay 15 is attached to the outlet of the exhaust pipe 14 of the engine through the exhaust gas passage 12, and a metal rod stay 15 passing through the center of the passage is fixed to the wall surface across the passage. A metal propeller 16 is rotatably attached to the center of the passageway, and the wall surface of the exhaust gas passageway 12 is made up of a number of radial thin tubes that have a certain angle with respect to the flow direction of the exhaust gas in the exhaust gas passageway 12. A thin metal honeycomb structure plate is wrapped around the exhaust gas passage 12 so that one end of the thin tube forming the honeycomb is connected to the exhaust gas passage 12, and the other end is opened to the atmosphere at the outer periphery of the main body. In order to protect the honeycomb structure wall 17, metal outer panels 18 and 19 are provided on both sides.
そしてエンジンの運転時排気ガス通路１２に流入する排
気ガスの流れによりプロペラ１６が回転し、この回転に
より排気ガスは旋回流となって捕集装置出口２１へと進
行するが、この際排気ガス中に含まれる煤は旋回流中で
遠心力を受けて外側に向いハニカム構造壁１７の細管２
０を通り大気中に放出される。この間に煤は細管２０の
壁に吸着されるため、この細管壁への煤の付着量が多く
なったところで捕集装置１１をカートリッジ式に交換す
るものである。When the engine is running, the propeller 16 rotates due to the flow of exhaust gas flowing into the exhaust gas passage 12, and due to this rotation, the exhaust gas becomes a swirling flow and advances toward the collection device outlet 21. The soot contained in the soot is directed outward under centrifugal force in the swirling flow and flows into the thin tubes 2 of the honeycomb structure wall 17.
0 and is emitted into the atmosphere. During this time, soot is adsorbed on the wall of the thin tube 20, so when the amount of soot adhering to the wall of the thin tube becomes large, the collection device 11 is replaced with a cartridge type.
上記のように従来の煤捕集装置においては、煤を捕集す
べきフィルタがペレット型のものでは捕集した煤により
このフィルタが短時間で目詰りを生じそのため捕集した
煤を燃焼させてフィルタの再生を図る手段を必要とし、
またフィルタがハニカム型のものではその製造が難かし
いという問題がある。As mentioned above, in conventional soot collection devices, if the filter that is supposed to collect soot is a pellet type, the filter will become clogged with the collected soot in a short period of time, and the collected soot will be burned. Requires a means to regenerate the filter,
Another problem is that it is difficult to manufacture a honeycomb filter.
本発明は上記の点に鑑み、長時間にわたって目詰りを生
じることのないペレット型の煤捕集装置を提供しようと
するものである。In view of the above points, the present invention aims to provide a pellet-type soot collecting device that does not become clogged over a long period of time.
本発明によれば、上記の課題は、ディーゼルエンジンの
排気ガス中の煤を捕集するペレットをケース中に収納し
、これをディーゼルエンジンの排気管中に介在させたデ
ィーゼルエンジンの排気中の煤を捕集する装置において
、前記ケースの少なくとも前面と後面とを前記ペレット
より細かい目の網体にて構成し、さらに前記ケース°の
前面には排気ガスの流れにより回転力が与えられる回転
翼を取付け、該ケースが排気ガスの流れにより回転され
るよう排気管中に支持させることにより達成される。According to the present invention, the above problem can be solved by storing pellets for collecting soot in the exhaust gas of a diesel engine in a case and interposing the pellets in the exhaust pipe of the diesel engine. In the device for collecting waste gas, at least the front and rear surfaces of the case are made of a mesh with finer mesh than the pellets, and the case further includes a rotor blade on the front surface to which rotational force is applied by the flow of exhaust gas. Mounting is accomplished by supporting the case in the exhaust pipe so that it can be rotated by the flow of exhaust gas.
本発明によれば、ディーゼルエンジンの排気ガスが排気
管中に流入すると、この排気ガスの流れにより、煤捕集
用のペレットを収容したケース前面の回転翼には回転力
が与えられそれによりケースが回転しその中に収容した
ペレットが撹拌される。そのため排気ガス中の煤はペレ
ットに捕集されるがこの煤はペレットの一定箇所に集中
して捕集されることなく、ペレットの撹拌作用によりそ
の捕集止着される箇所が順次移動し、全ペレット中に万
遍なく捕集止着されるようになる。それによりペレット
は捕集した煤により短時間に目詰りを起こすことがなく
なり、長時間にわたって使用に耐えるものとなる。According to the present invention, when exhaust gas from a diesel engine flows into the exhaust pipe, the flow of the exhaust gas imparts rotational force to the rotor blades on the front of the case that house the soot-collecting pellets. rotates and the pellets contained therein are agitated. Therefore, the soot in the exhaust gas is collected on the pellets, but the soot is not concentrated and collected in a certain part of the pellet, but the parts where it is collected and fixed move sequentially due to the stirring action of the pellets. It will be collected and fixed evenly in all pellets. As a result, the pellets will not become clogged with collected soot in a short period of time, and will be able to withstand use for a long period of time.
本発明の実施例を図面を参照して以下に説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図において、ペレットケース３１は円筒形に形成さ
れその中に排気ガス中の煤等の微粒子を捕集するための
ペレット３２が多数収納されている。In FIG. 1, a pellet case 31 is formed into a cylindrical shape, and a large number of pellets 32 are housed therein for collecting fine particles such as soot in exhaust gas.
ケース３１の排気ガスの流入方向Ｘに対面する前面３３
と後面とはペレット３２より目の細かい金網で構成され
、ペレット３２をケース３１内に保持するとともに、排
気ガスがこのケース３１内を前面３３から後面へと通過
できるようにしている。Front surface 33 facing the exhaust gas inflow direction X of the case 31
The rear surface and the rear surface are made of a wire mesh having a finer mesh than the pellet 32, and hold the pellet 32 inside the case 31, while also allowing exhaust gas to pass through the inside of the case 31 from the front surface 33 to the rear surface.
ケース３１にはその円筒形の軸線に沿って回転軸３４が
一体に取付けられ、さらにケース３１の前面３３に回転
翼３５を位置させ、この回転翼３５のボス部をケース３
１の回転軸３４に固定させる。この回転翼３５は排気ガ
スの流れＸにより回転力が与えられるように配置されま
たケース３１の回転軸３４は図示しない適宜の装置によ
り排気管中に回転自在に支持されている。A rotating shaft 34 is integrally attached to the case 31 along its cylindrical axis, and a rotary blade 35 is located on the front surface 33 of the case 31, and the boss portion of the rotary blade 35 is connected to the case 3.
It is fixed to the rotating shaft 34 of No. 1. The rotary blades 35 are arranged so that rotational force is applied by the flow X of exhaust gas, and the rotating shaft 34 of the case 31 is rotatably supported in the exhaust pipe by an appropriate device (not shown).
上記のように構成された本実施例において、ディーゼル
エンジンの運転中、排気ガスが排気管中に流入すると、
この排気ガス中の煤等の微粒子はペレットケース３１内
のペレット３２により捕集される。この際ベレットケー
ス３１の前面に取付けられた回転翼３５は排気ガスの流
れにより回転力が与えられ、そのためこれと一体のケー
ス３１も回転軸３４と共に矢印Ｙの方向に回転する。こ
のケース３１の回転によりその内部に収納されているペ
レット３２は撹拌されるので、このペレット３２に捕集
止着される煤も動かされ、その結果捕集された煤は一箇
所に止まることなく、ケース３１内で上流側から下流側
へと順次移動し、ペレット３２中に万遍なく捕集される
。このため、捕集された煤が一定箇所に止まり短時間で
ペレット３２に目詰りを生じ排気ガスの圧力損失を大き
くすることがなくなり、ペレットは長時間にわたって使
用に耐えるものとなる。In this embodiment configured as described above, when exhaust gas flows into the exhaust pipe while the diesel engine is operating,
Fine particles such as soot in the exhaust gas are collected by pellets 32 in a pellet case 31. At this time, the rotary blade 35 attached to the front surface of the bellet case 31 is given a rotational force by the flow of exhaust gas, so that the case 31 integrated therewith also rotates in the direction of the arrow Y together with the rotating shaft 34. As the pellets 32 stored inside the case 31 are rotated, the soot collected and attached to the pellets 32 is also moved, and as a result, the collected soot does not stay in one place. , sequentially move from the upstream side to the downstream side within the case 31, and are evenly collected in the pellets 32. Therefore, the collected soot does not stop at a certain point and clog the pellet 32 in a short time, thereby increasing the pressure loss of the exhaust gas, and the pellet can be used for a long time.
本発明は以上のような構成、作用を有しているから、使
用時、排気ガスによりベレットケースが回転作用を受け
、その内部に収納されたペレットを撹拌するので、この
ペレットが捕集した煤によって、短時間に目詰りを生じ
ることが回避され、そのため捕集装置が長時間にわたっ
て使用できるものとなる。Since the present invention has the above-described structure and operation, when in use, the pellet case is rotated by the exhaust gas and the pellets housed inside are stirred, so that the soot collected by the pellets is This prevents clogging from occurring in a short period of time, allowing the collection device to be used for a long period of time.
またこのベレットケースの回転はエンジンの排気ガスに
よって行われるため、特別の動力源を要せず、したがっ
て煤捕集装置は構造が簡単であるとともに比較的安価に
製造することができる。Further, since the rotation of the pellet case is performed by the exhaust gas of the engine, no special power source is required. Therefore, the soot trapping device has a simple structure and can be manufactured at a relatively low cost.
第１図は本発明の実施例の要部の斜面図、５第２図は従
来のディーゼルエンジンの排気煤捕集装置の概略構成図
、第３図は従来のカートリッジ交換式の煤捕集装置の要
部の縦断面図である。
３１・・・ベレットケース、３２・・・ペレット、３３
・・・ペレットケース前面、
３４・・・回転軸、 ３５・・・回転翼。Fig. 1 is a perspective view of the main parts of an embodiment of the present invention, Fig. 2 is a schematic configuration diagram of a conventional diesel engine exhaust soot collecting device, and Fig. 3 is a conventional cartridge replaceable soot collecting device. FIG. 31...Bellet case, 32...Pellet, 33
...Pellet case front, 34... Rotating shaft, 35... Rotating blade.
Claims (1)
レットをケース中に収納し、これをディーゼルエンジン
の排気管中に介在させたディーゼルエンジンの排気中の
煤を捕集する装置において、前記ケースの少なくとも前
面と後面とを前記ペレットより細かい目の網体にて構成
し、さらに前記ケースの前面には排気ガスの流れにより
回転力が与えられる回転翼を取付け、該ケースが排気ガ
スの流れにより回転されるよう排気管中に支持されてい
ることを特徴とするディーゼルエンジンの排気ガス煤捕
集装置。1. In an apparatus for collecting soot in the exhaust gas of a diesel engine, the pellets for collecting soot in the exhaust gas of a diesel engine are housed in a case, and the pellets are interposed in the exhaust pipe of the diesel engine. At least the front and rear surfaces of the case are made of a mesh with finer mesh than the pellets, and furthermore, a rotor blade is attached to the front surface of the case to which rotational force is applied by the flow of exhaust gas, and the case is rotated by the flow of exhaust gas. An exhaust gas soot collection device for a diesel engine, characterized in that the device is rotatably supported in an exhaust pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1220172A JPH0385314A (en) | 1989-08-29 | 1989-08-29 | Exhaust gas dust collecting device for diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1220172A JPH0385314A (en) | 1989-08-29 | 1989-08-29 | Exhaust gas dust collecting device for diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0385314A true JPH0385314A (en) | 1991-04-10 |
Family
ID=16747016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1220172A Pending JPH0385314A (en) | 1989-08-29 | 1989-08-29 | Exhaust gas dust collecting device for diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0385314A (en) |
-
1989
- 1989-08-29 JP JP1220172A patent/JPH0385314A/en active Pending
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