JPS6360212B2 - - Google Patents
Info
- Publication number
- JPS6360212B2 JPS6360212B2 JP10975681A JP10975681A JPS6360212B2 JP S6360212 B2 JPS6360212 B2 JP S6360212B2 JP 10975681 A JP10975681 A JP 10975681A JP 10975681 A JP10975681 A JP 10975681A JP S6360212 B2 JPS6360212 B2 JP S6360212B2
- Authority
- JP
- Japan
- Prior art keywords
- filter trap
- particulate
- burner
- filter
- incinerator
- 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
Links
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000013618 particulate matter Substances 0.000 claims description 3
- 239000000446 fuel Substances 0.000 description 14
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 5
- 238000001514 detection method Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000013021 overheating Methods 0.000 description 3
- 239000004071 soot Substances 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003595 mist 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
- 238000011144 upstream manufacturing Methods 0.000 description 1
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
- F01N3/025—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 fuel burner or by adding fuel to exhaust
Description
【発明の詳細な説明】
この発明は、デイーゼルエンジンのパーテイキ
ユレイト（排気中に含まれる煤等の微粒子）の捕
集装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for collecting particulates (fine particles such as soot contained in exhaust gas) of a diesel engine.
一般に、デイーゼルエンジンの排気中には、窒
素酸化物（NOx）等のいわゆる有害排気物のほ
かに、煤やオイルミスト等を主体とするパーテイ
キユレイトが含まれており、これが運転状態によ
つて増加するとしばしば黒煙を排出することにな
つて、大気汚染上好しくない。 In general, diesel engine exhaust contains not only so-called harmful exhaust such as nitrogen oxides (NOx), but also particulates mainly consisting of soot and oil mist. When the amount increases, black smoke is often emitted, which is unfavorable in terms of air pollution.
このため、近年では例えば排気管の途中にフイ
ルタトラツプ等のろ過装置を取付けて、パーテイ
キユレイトを排気中から捕集する等、その防止に
種々の工夫がされている。 Therefore, in recent years, various measures have been taken to prevent this, such as installing a filter device such as a filter trap in the middle of the exhaust pipe to collect particulates from the exhaust gas.
ところで、このフイルタトラツプによりパーテ
イキユレイトを捕集する装置では、使用している
うちに、フイルタが目づまりしてその機能が次第
に低下するという必配がある。そこで、ある期間
が過ぎたら、バーナ等の焼却装置によつてパーテ
イキユレイトをフイルタトラツプ内で燃焼させ、
これを再生するものが考えられている（例えば実
開昭55−177015号公報）。 However, in a device that collects particulates using a filter trap, it is inevitable that the filter will become clogged during use and its function will gradually deteriorate. Therefore, after a certain period of time, the particulate is burned in the filter trap using an incinerator such as a burner.
A device that reproduces this is being considered (for example, Japanese Utility Model Application Publication No. 177015/1983).
この場合、焼却装置の燃料としては、エンジン
の燃料が使用され、バーナの火炎によつて定期的
に定時間加熱して捕集したパーテイキユレイトを
燃焼させている。 In this case, engine fuel is used as the fuel for the incinerator, and the collected particulates are burned by being periodically heated for a fixed period of time by the flame of the burner.
これにより、フイルタトラツプの機能を正常に
保ち、排気抵抗を減じる一方、そのメンテナンス
の簡素化を図つている。 This maintains the normal function of the filter trap, reduces exhaust resistance, and simplifies its maintenance.
しかしながら、このようにバーナの火炎によつ
て捕集したパーテイキユレイトを燃焼させると、
例えばパーテイキユレイトの量が多いときには、
その燃焼が急激に行なわれるようになつて、フイ
ルタトラツプが過熱し、ひどいときにはトラツプ
自体が焼損してしまうという問題があつた。 However, when the particulate collected by the burner flame is burned in this way,
For example, when the amount of particulate is large,
This combustion started to occur rapidly, causing the filter trap to overheat and, in severe cases, causing the trap itself to burn out.
この発明は、このような従来の問題に着目して
なされたもので、フイルタトラツプ内の温度を検
出し、パーテイキユレイトの燃焼時にその温度の
上昇が急な場合には、バーナによる加熱を停止す
ることにより、上記問題点を解決することを目的
とする。 This invention was made by focusing on such conventional problems, and detects the temperature inside the filter trap, and if the temperature rises rapidly during combustion of particulate, the heating by the burner is stopped. The purpose is to solve the above problems.
以下、本発明の一実施例を図面に基づいて説明
する。 Hereinafter, one embodiment of the present invention will be described based on the drawings.
図で、１はエンジン、２は排気管、３はパーテ
イキユレイトを捕集するフイルタトラツプであ
る。 In the figure, 1 is an engine, 2 is an exhaust pipe, and 3 is a filter trap that collects particulate matter.
フイルタトラツプ３は、セラミツク製や金属製
のものが良く、その上流側にはパーテイキユレイ
トを加熱、燃焼させるための手段としてバーナ４
とエアノズル５とが配設され、それぞれフユーエ
ルポンプ６とエアポンプ７とから燃料と空気とが
供給されるようにしている。 The filter trap 3 is preferably made of ceramic or metal, and a burner 4 is installed upstream of it as a means for heating and burning the particulate.
and an air nozzle 5 are arranged so that fuel and air are supplied from a fuel pump 6 and an air pump 7, respectively.
このフユーエルポンプ６とエアポンプ７は、制
御回路８からの指令によつて駆動制御され、制御
回路８は例えば走行距離信号や走行時間信号等に
基づいて定期的にフユーエルポンプ６とエアポン
プ７を駆動し、バーナ４から火炎を噴き出させ
る。ただし、その点火は、やはり制御回路８から
の指令で、図示しない着火装置によつて行なわれ
るようにしてある。 The fuel pump 6 and air pump 7 are driven and controlled by commands from a control circuit 8, and the control circuit 8 periodically activates the fuel pump 6 and air pump 7 based on, for example, a mileage signal or a travel time signal. The flame is ejected from the burner 4. However, the ignition is still performed by an ignition device (not shown) in response to a command from the control circuit 8.
これにより、フイルタトラツプ３である程度の
パーテイキユレイトを捕集したら、これを燃焼さ
せてフイルタトラツプ３を再生する。 As a result, once a certain amount of particulate is collected in the filter trap 3, it is burned and the filter trap 3 is regenerated.
なお、この際フイルタトラツプ３へエンジン１
の排気が導入されないように、この捕集装置をバ
イパスする補助通路９が設けられ、その入口部に
は制御回路８からの指令によつて補助通路９と排
気管２を交互に開閉する三方切換弁１０が設置さ
れている。 At this time, engine 1 is transferred to filter trap 3.
In order to prevent the exhaust gas from being introduced, an auxiliary passage 9 is provided that bypasses this collection device, and a three-way switch is provided at the entrance of the auxiliary passage 9 to alternately open and close the auxiliary passage 9 and the exhaust pipe 2 according to commands from the control circuit 8. A valve 10 is installed.
一方、フイルタトラツプ３の内部には、その内
部の温度を検出する手段として熱電対１１が設置
され、その検出信号は前述の制御回路８に入力さ
れる。 On the other hand, a thermocouple 11 is installed inside the filter trap 3 as a means for detecting the internal temperature, and its detection signal is input to the control circuit 8 described above.
そして、制御回路８は、パーテイキユレイトの
加熱燃焼時に、刻々入力される前記検出信号から
フイルタトラツプ３内部の温度の上昇割合を算出
し、これが所定値を超えると、フユーエルポンプ
６の駆動を停止させ、バーナ４による加熱を止め
るように制御する。 Then, the control circuit 8 calculates the rate of increase in temperature inside the filter trap 3 from the detection signal that is input every moment during heating and combustion of the particulate, and when this exceeds a predetermined value, stops driving the fuel pump 6. control so that the heating by the burner 4 is stopped.
即ち、フイルタトラツプ３である期間パーテイ
キユレイトを捕集したら、これをバーナ４の火炎
によつて加熱し燃焼させるが、この際フイルタト
ラツプ３内の温度が所定値を超えて急上昇するよ
うであれば、フユーエルポンプ６からバーナ４へ
の燃料の供給を停止して加熱を止め、パーテイキ
ユレイトの急激な燃焼を抑える。これにより、フ
イルタトラツプ３の過熱を防止するのである。 That is, once the particulate is collected for a certain period of time in the filter trap 3, it is heated and combusted by the flame of the burner 4. At this time, if the temperature inside the filter trap 3 suddenly rises above a predetermined value, The supply of fuel from the fuel pump 6 to the burner 4 is stopped to stop heating and suppress rapid combustion of particulate. This prevents the filter trap 3 from overheating.
したがつて、捕集されたパーテイキユレイトの
量がかなり多いときでも、フイルタトラツプ３を
再生する時にパーテイキユレイトが急激に燃焼す
るようなことはなく、フイルタトラツプ３が過熱
されて焼損するということは防止される。 Therefore, even when the amount of particulate collected is quite large, the particulate will not be suddenly burned when the filter trap 3 is regenerated, and the filter trap 3 will not be overheated and burnt out. Prevented.
なお、この場合フユーエルポンプ６は停止し、
同時にエアポンプ７も停止するかあるいはエアポ
ンプだけはその供給量を絞り、パーテイキユレイ
トの緩かな燃焼を行なわせ、再生を完了する。 In addition, in this case, the fuel pump 6 stops,
At the same time, the air pump 7 is also stopped or the supply amount of the air pump is reduced to allow gradual combustion of the particulate to complete the regeneration.
また、本実施例のようにフユーエルポンプ６を
停止せず、燃料と空気を若干供給するようにし
て、フイルタトラツプ３の過熱を抑えつつ、パー
テイキユレイトの燃焼を促進することも可能であ
る。 Furthermore, it is also possible to suppress overheating of the filter trap 3 and promote combustion of the particulate by supplying a small amount of fuel and air without stopping the fuel pump 6 as in the present embodiment.
以上説明した通り、本発明によれば、フイルタ
トラツプで捕集したパーテイキユレイトをバーナ
等の焼却装置によつて加熱燃焼させると共に、フ
イルタトラツプ内の温度を検出し、この検出信号
から該温度の上昇の割合が所定値を超えたときに
は前記焼却装置の作動を停止するようにしたの
で、パーテイキユレイトが急激に燃焼してフイル
タトラツプを過熱するということは防止でき、ま
た燃料を無駄に消費することなくフイルタトラツ
プの再生ができるという効果がある。 As explained above, according to the present invention, the particulate collected in the filter trap is heated and combusted by an incinerator such as a burner, and the temperature inside the filter trap is detected, and from this detection signal, it is possible to detect the increase in temperature. Since the operation of the incinerator is stopped when the ratio exceeds a predetermined value, it is possible to prevent the particulate from burning rapidly and overheating the filter trap, and also to prevent the filter trap from being overheated without wasting fuel. It has the effect of being able to reproduce.
図は本発明の一実施例を示す構成断面図であ
る。
２…排気管、３…フイルタトラツプ、４…バー
ナ、５…エアノズル、６…フユーエルポンプ、７
…エアポンプ、８…制御回路、９…補助通路、１
０…三方切換弁、１１…熱電対。
The figure is a sectional view showing an embodiment of the present invention. 2...Exhaust pipe, 3...Filter trap, 4...Burner, 5...Air nozzle, 6...Fuel pump, 7
...Air pump, 8...Control circuit, 9...Auxiliary passage, 1
0... Three-way switching valve, 11... Thermocouple.
Claims (1)
を捕集するフイルタトラツプと、このパーテイキ
ユレイトをフイルタトラツプ内で加熱燃焼させる
焼却装置を備えたデイーゼルエンジンにおいて、
フイルタトラツプ内の温度を検出する手段を設
け、上記加熱燃焼時にこの検出温度の上昇の割合
が所定値を超えたら前記焼却装置の作動を停止さ
せる制御回路を設けたことを特徴とするデイーゼ
ルエンジンのパーテイキユレイト捕集装置。1. In a diesel engine equipped with a filter trap in the middle of the exhaust pipe that collects particulate matter in the exhaust, and an incinerator that heats and burns this particulate matter in the filter trap,
A party for a diesel engine, characterized in that it is provided with means for detecting the temperature inside the filter trap, and is provided with a control circuit that stops the operation of the incinerator when the rate of increase in the detected temperature exceeds a predetermined value during the heating combustion. Curate collection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56109756A JPS5813114A (en) | 1981-07-14 | 1981-07-14 | Particulate collection device of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56109756A JPS5813114A (en) | 1981-07-14 | 1981-07-14 | Particulate collection device of diesel engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5813114A JPS5813114A (en) | 1983-01-25 |
| JPS6360212B2 true JPS6360212B2 (en) | 1988-11-22 |
Family
ID=14518440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56109756A Granted JPS5813114A (en) | 1981-07-14 | 1981-07-14 | Particulate collection device of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5813114A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5918220A (en) * | 1982-07-22 | 1984-01-30 | Mazda Motor Corp | Exhaust gas purification device for diesel engine |
| JPS59147814A (en) * | 1983-02-15 | 1984-08-24 | Nissan Motor Co Ltd | Regenerating burner control device for trap collecting exhaust fine particle in internal-combustion engine |
| JPS59153914A (en) * | 1983-02-21 | 1984-09-01 | Nissan Motor Co Ltd | Regenerative burner control device in exhaust particle trap in internal-combustion engine |
| JPS59158313A (en) * | 1983-03-01 | 1984-09-07 | Nissan Motor Co Ltd | Regenerative burner controller for exhaust micro particle catching trap for internal-combustion engine |
| JPS60122214A (en) * | 1983-11-30 | 1985-06-29 | Tokyo Roki Kk | Black smoke elimination in exhaust gas for internal-combustion engine |
| JPS61164015A (en) * | 1985-01-14 | 1986-07-24 | Mazda Motor Corp | Exhaust gas purifying device of engine |
| JP3124995B2 (en) * | 1996-05-29 | 2001-01-15 | 日東電工株式会社 | Adhesive surface functional group modification method |
| CN100371569C (en) * | 2005-12-07 | 2008-02-27 | 北京交通大学 | Diesel engine micro particle metal bag type filtering-body fuel regenerative temperature coutrol method |
-
1981
- 1981-07-14 JP JP56109756A patent/JPS5813114A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5813114A (en) | 1983-01-25 |
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