JPH0327734B2 - - Google Patents
Info
- Publication number
- JPH0327734B2 JPH0327734B2 JP6699082A JP6699082A JPH0327734B2 JP H0327734 B2 JPH0327734 B2 JP H0327734B2 JP 6699082 A JP6699082 A JP 6699082A JP 6699082 A JP6699082 A JP 6699082A JP H0327734 B2 JPH0327734 B2 JP H0327734B2
- Authority
- JP
- Japan
- Prior art keywords
- electric heater
- particle collector
- heater elements
- heater element
- exhaust gas
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Processes For Solid Components From Exhaust (AREA)
Description
【発明の詳細な説明】
本発明は自動車等の車輌に用いられるデイーゼ
ルエンジン用粒子捕集器の再生方法に係わる。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for regenerating particle collectors for diesel engines used in vehicles such as automobiles.
デイーゼルエンジンに於て、その排気系に排気
ガス中の炭素粒子の如き可燃性粒子を捕捉してこ
れが大気中へ放出されることを防止する粒子捕集
器を設けることは従来から知られている。 It has long been known to provide a particle collector in the exhaust system of a diesel engine to capture combustible particles such as carbon particles in the exhaust gas and prevent them from being released into the atmosphere. .
粒子捕集器は耐熱性のフイルタ構造の捕集材を
有し、捕集した粒子（捕集物）の量が増大するに
従つてそのフイルタ構造が詰まり、正常な排気ガ
ス流れに対し支障を与えるようになる。このた
め、正常な排気ガス流れに対し支障を与えること
なく粒子捕集器が使用されるためには、粒子捕集
器に捕捉された粒子が定期的にこれより除去さ
れ、粒子捕集器の再生が行われる必要がある。 The particle collector has a collection material with a heat-resistant filter structure, and as the amount of collected particles (collected matter) increases, the filter structure becomes clogged, causing a hindrance to normal exhaust gas flow. Start giving. Therefore, in order for the particle collector to be used without interfering with the normal flow of exhaust gas, the particles trapped in the particle collector must be periodically removed from the particle collector. Regeneration needs to occur.
この粒子捕集器の再生を行う一つの方法とし
て、粒子捕集器の捕集材の上流側端面に複数個の
電気式ヒータ素子を分散配設し、これら電気式ヒ
ータ素子に順次通電を行い、各電気式ヒータ素子
の発熱により前記捕集材が捕集している捕集物を
焼失灰化させる方法が知られている。電気式ヒー
タ素子による粒子捕集器の再生は、電気式ヒータ
素子が発熱することによりそれの周りにある可燃
性粒子が燃焼し、その火炎が粒子捕集器を通過す
る排気ガスの流れに乗つて捕集材の下流側へ伝播
することにより、その電気式ヒータ素子の配設位
置に応じて局部的に行われる。 One method for regenerating this particle collector is to distribute a plurality of electric heater elements on the upstream end face of the collection material of the particle collector, and sequentially energize these electric heater elements. A method is known in which the collected material collected by the collecting material is incinerated and ashed by heat generated by each electric heater element. Regeneration of a particle collector using an electric heater element involves the generation of heat by the electric heater element, which burns the combustible particles around it, and the flames riding on the flow of exhaust gas passing through the particle collector. By propagating to the downstream side of the collection material, the heating is performed locally depending on the location of the electric heater element.
この電気式ヒータ素子による粒子捕集器の所定
の再生は複数個の全ての電気式ヒータ素子に通電
が行われる以前に完了することがあり、このとき
偏りのない再生が行われるためには複数個の電気
式ヒータ素子が捕集材の上流側端面に所定の位置
関係をもつて配設され、またそれらに対する通電
順序が予め定められている必要がある。 The predetermined regeneration of the particle collector by this electric heater element may be completed before all of the multiple electric heater elements are energized, and in this case, in order to perform unbiased regeneration, multiple It is necessary that the electric heater elements are arranged in a predetermined positional relationship on the upstream end face of the collection material, and the order in which electricity is applied to them is determined in advance.
本発明は上述の如き必要性に応じ、複数個の電
気式ヒータ素子を捕集材の上流側端面に特定の位
置関係をもつて配設し、またそれら電気式ヒータ
素子に対する通電順序を特定し、これにより偏り
がない再生が行われるようにした粒子捕集器の再
生方法を提供することを目的としている。 In response to the above-mentioned needs, the present invention arranges a plurality of electric heater elements in a specific positional relationship on the upstream end face of the collection material, and specifies the order in which electricity is applied to the electric heater elements. It is an object of the present invention to provide a method for regenerating a particle collector in which unbiased regeneration is performed.
かかる目的は、本発明によれば、捕集材の上流
側端面に複数個の電気式ヒータ素子をこれらが前
記上流側端面の中心を対称点として複数個の対を
なすよう配設し、まず前記複数個の電気式ヒータ
素子の一つに通電を行い、次にその電気式ヒータ
素子に対して対をなす電気式ヒータ素子に通電を
行い、以降同様に対をなす電気式ヒータ素子毎に
順次通電を行い、各電気式ヒータ素子の発熱によ
り前記捕集材が捕集している捕集物を焼失灰化さ
せることを特徴とするエンジン用粒子捕集器の再
生方法によつて達成される。 According to the present invention, this object is achieved by disposing a plurality of electric heater elements on the upstream end surface of the collection material so as to form a plurality of pairs with the center of the upstream end surface as a symmetrical point, and first, energizing one of the plurality of electric heater elements, then energizing the electric heater element that forms a pair with that electric heater element, and thereafter similarly for each electric heater element that forms a pair; This is achieved by a method for regenerating a particle collector for an engine, characterized in that the collected material collected by the collection material is incinerated and incinerated by sequentially energizing each electric heater element to generate heat. Ru.
以下に添付の図を参照して本発明を実施例につ
いて詳細に説明する。 The invention will now be described in detail by way of example embodiments with reference to the accompanying drawings.
第１図は本発明による再生方法が実施される粒
子捕集器の一つの実施例を示す半断面図、第２図
は第１図の線−に沿う断面図、第３図は第１
図及び第２図に示された粒子捕集器のフイルタ要
素の上流側端面を示す端面図である。これらの図
に於て、１は粒子捕集器のケーシングを示してい
る。ケーシング１はその一端に排気ガス入口２及
び接続用フランジ部３を有し、また他端に排気ガ
ス出口４及び接続用フランジ部５を有し、デイー
ゼルエンジンの排気通路の途中に取付けられる。
ケーシング１は排気ガス入口２と排気ガス出口４
との間に粒子捕集材であるフイルタ要素６を収納
している。このフイルタ要素６は、ハニカム状セ
ラミツクス等の耐熱材により構成され、この実施
例に於ては、楕円形断面を有している。フイルタ
要素６の上流側端面には複数個の、この実施例に
於ては、８個の電気式ヒータ素子８1〜８8が分散
配設されている。この８個の電気式ヒータ素子の
うち電気式ヒータ素子８1と８2、８3と８4、８5と
８6、８7と８8とは各々フイルタ要素６の上流側
端面の中心を対称点として各々対をなして対称配
置されており、これら電気式ヒータ素子は各々そ
の一端にて個別の接続端子９1〜９8に接続され、
また他端にてアース要素１０に共通にアースされ
ている。電気式ヒータ素子８1〜８8はフイルタ要
素６とこれより上流側に設けられたハニカム状セ
ラミツクス製のフイルタ要素７との間に挾まれて
保持されている。 FIG. 1 is a half-sectional view showing one embodiment of a particle collector in which the regeneration method according to the present invention is carried out, FIG. 2 is a sectional view taken along the line - in FIG. 1, and FIG.
FIG. 3 is an end view of the upstream end of the filter element of the particle collector shown in FIGS. In these figures, 1 indicates the casing of the particle collector. The casing 1 has an exhaust gas inlet 2 and a connecting flange 3 at one end, and an exhaust gas outlet 4 and a connecting flange 5 at the other end, and is installed in the middle of an exhaust passage of a diesel engine.
The casing 1 has an exhaust gas inlet 2 and an exhaust gas outlet 4
A filter element 6, which is a particle collection material, is housed between the two. The filter element 6 is made of a heat-resistant material such as honeycomb-shaped ceramics, and has an elliptical cross section in this embodiment. A plurality of electric heater elements 8 1 to 8 8 , eight in this embodiment, are distributed on the upstream end face of the filter element 6 . Of these eight electric heater elements, electric heater elements 8 1 and 8 2 , 8 3 and 8 4 , 8 5 and 8 6 , 8 7 and 8 8 each have a center point on the upstream end surface of the filter element 6. They are arranged symmetrically in pairs as points of symmetry, and each of these electric heater elements is connected at one end to an individual connection terminal 9 1 to 9 8 ,
Moreover, the other end is commonly grounded to the ground element 10. The electric heater elements 8 1 to 8 8 are held between the filter element 6 and a filter element 7 made of honeycomb-shaped ceramics provided upstream of the filter element 6 .
電気式ヒータ素子８1〜８8には第４図に示され
ている如く、バツテリ電源１２より電流がスイツ
チ１１1〜１１8を経て各々個別に選択的に供給さ
れ、スイツチ１１1〜１１8の開閉は制御装置１３
により行なわれる。制御装置１３はエンジン回転
数センサ１４によりデイーゼルエンジンの回転数
に関する情報を与えられ、このエンジン回転数の
積算値が所定値以上に達したとき粒子捕集器の再
生時期であると判定し、このときにはスイツチ１
１1〜１１8をその図番の添字番号順に各々所定時
間ずつ順次閉じるようになつている。 As shown in FIG. 4, electric current is selectively supplied from the battery power source 12 to the electric heater elements 8 1 to 8 8 through switches 11 1 to 11 8 , respectively, and the switches 11 1 to 11 8 The control device 13 controls the opening and closing of the
This is done by The control device 13 is given information regarding the rotation speed of the diesel engine by the engine rotation speed sensor 14, and determines that it is time to regenerate the particle collector when the integrated value of the engine rotation speed reaches a predetermined value or more. Sometimes switch 1
1 1 to 11 8 are sequentially closed for a predetermined time each in the order of the subscript number of the drawing number.
従つて、粒子捕集器の再生時期が到来すると、
まず電気式ヒータ素子８1に通電が行われ、これ
の通電が所定時間行われると、該電気式ヒータ素
子８1に対する通電が停止され、次に電気式ヒー
タ素子８2に対する通電が開始される。そしてこ
の電気式ヒータ素子８2に対する通電が所定時間
行われると、該電気式ヒータ素子８2に対する通
電が停止され、次に電気式ヒータ素子８3に対す
る通電が開始され、以降電気式ヒータ素子８4〜
８8の図番の添字番号順に順次通電が行われる。 Therefore, when it is time to regenerate the particle collector,
First, the electric heater element 8 1 is energized, and when the electric heater element 8 1 is energized for a predetermined period of time, the energization to the electric heater element 8 1 is stopped, and then the electric heater element 8 2 is started to be energized. . When the electric heater element 8 2 is energized for a predetermined period of time, the electric heater element 8 2 is de-energized, and then the electric heater element 8 3 is started to be energized. Four ~
8 Electrification is performed sequentially in the order of the subscript number of the drawing number 8 .
粒子捕集器の再生時、電気式ヒータ素子に対す
る通電は常に電気式ヒータ素子８1から電気式ヒ
ータ素子８8の全てに亙つて行われるものではな
く、その途中に於いて粒子捕集器の所定の再生が
完了した時には中止される。このように全ての電
気式ヒータ素子に対する通電が行われる以前に於
て、粒子捕集器の再生が完了しても各電気式ヒー
タ素子がフイルタ要素の上流側端面の中心を対称
点として複数個の対をなすように設けられ、また
その電気式ヒータ素子に対して上述の如き順序に
て通電が行われることにより、常に偏りのない粒
子捕集器の再生が行われる。 When the particle collector is regenerated, the electric heater elements are not always energized from the electric heater element 81 to the electric heater element 88 ; When the predetermined playback is completed, it is stopped. In this way, before all the electric heater elements are energized, even if the regeneration of the particle collector is completed, each electric heater element has multiple electric heater elements with the center of the upstream end face of the filter element as a symmetrical point. By energizing the electric heater elements in the order described above, the particle collector is always regenerated evenly.
尚、第５図は本発明による再生方法を実施する
に適した粒子捕集器の他の実施例を示している。
尚、第５図に於て第３図に対応する部分は第３図
に符した符号と同一の符号により示されている。
かかる実施例に於ても、電気式ヒータ素子はフイ
ルタ要素６の上流側端面の中心を対称点として複
数個の対をなすよう対称配設され、またその図面
に付された図番の添字の番号順に通電を行われ
る。これによりこの実施例に於ても上述した実施
例と同様の作用効果が得られる。 Incidentally, FIG. 5 shows another embodiment of a particle collector suitable for carrying out the regeneration method according to the present invention.
In FIG. 5, parts corresponding to those in FIG. 3 are designated by the same reference numerals as in FIG. 3.
In this embodiment as well, the electric heater elements are arranged symmetrically in pairs with the center of the upstream end face of the filter element 6 as the symmetrical point, and the subscripts of the drawing numbers are as follows. Power is applied in numerical order. As a result, the same effects as those of the above-mentioned embodiment can be obtained in this embodiment as well.
以上に於ては本発明を特定の実施例について詳
細に説明したが、本発明はこれらに限定されるも
のではなく本発明の範囲内にて種々の実施例が可
能であることが当業者にとつて明らかであろう。 Although the present invention has been described in detail with respect to specific embodiments above, it will be understood by those skilled in the art that the present invention is not limited to these and that various embodiments can be made within the scope of the present invention. It should be obvious.
第１図は本発明によるエンジン用粒子捕集器の
再生方法の実施に使用する粒子捕集器の一実施例
を示す半断面図、第２図は第１図の線−に沿
う断面図、第３図は第１図及び第２図に示された
粒子捕集器のフイルタ要素の上流側端面を示す端
面図、第４図は第１図乃至第３図に示された粒子
捕集器の電気式ヒータ素子に対する通電を制御す
る制御装置の回路図、第５図は本発明による粒子
捕集器の再生方法の実施に適した他の実施例の粒
子捕集器のフイルタ要素の上流側端面を示す端面
図である。
１……ケーシング、２……排気ガス入口、３…
…接続用フランジ部、４……排気ガス出口、５…
…接続用フランジ部、６，７……フイルタ要素、
８1〜８8……電気式ヒータ素子、９1〜９8……接
続端子、１０……アース要素、１１1〜１１8……
スイツチ、１２……バツテリ電源、１３……制御
装置、１４……エンジン回転数センサ。
FIG. 1 is a half-sectional view showing an embodiment of a particle collector used in the method for regenerating an engine particle collector according to the present invention, and FIG. 2 is a sectional view taken along the line - in FIG. 1. FIG. 3 is an end view showing the upstream end face of the filter element of the particle collector shown in FIGS. 1 and 2, and FIG. 4 is an end view of the particle collector shown in FIGS. 1 to 3. FIG. 5 is a circuit diagram of a control device for controlling energization to an electric heater element of the present invention; FIG. It is an end view showing an end surface. 1...Casing, 2...Exhaust gas inlet, 3...
...Connection flange, 4...Exhaust gas outlet, 5...
...Connection flange part, 6,7...Filter element,
8 1 - 8 8 ... Electric heater element, 9 1 - 9 8 ... Connection terminal, 10 ... Earth element, 11 1 - 11 8 ...
Switch, 12...Battery power supply, 13...Control device, 14...Engine speed sensor.
Claims (1)
素子をこれらが前記上流側断面の中心を対称点と
して複数個の対をなすよう配設し、まず前記複数
個の電気式ヒータ素子の一つに通電を行い、次に
その電気式ヒータ素子に対して対をなす電気式ヒ
ータ素子に通電を行い、以降同様に対をなす電気
式ヒータ素子毎に順次通電を行い、各電気式ヒー
タ素子の発熱により前記捕集材が捕集している捕
集物を焼失灰化させることを特徴とするエンジン
用粒子捕集器の再生方法。1. A plurality of electric heater elements are arranged on the upstream side cross section of the collection material so that they form a plurality of pairs with the center of the upstream side cross section as a symmetrical point, and first, the electric heater elements of the plurality of electric heater elements are arranged in pairs. energize one electric heater element, then energize the electric heater element that makes a pair with that electric heater element, and thereafter energize each pair of electric heater elements in the same way, so that each electric heater element A method for regenerating a particle collector for an engine, characterized in that the collected material collected by the collection material is incinerated and incinerated by heat generated by the element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57066990A JPS58183810A (en) | 1982-04-21 | 1982-04-21 | Regenerating of particle collecter for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57066990A JPS58183810A (en) | 1982-04-21 | 1982-04-21 | Regenerating of particle collecter for engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58183810A JPS58183810A (en) | 1983-10-27 |
| JPH0327734B2 true JPH0327734B2 (en) | 1991-04-16 |
Family
ID=13331954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57066990A Granted JPS58183810A (en) | 1982-04-21 | 1982-04-21 | Regenerating of particle collecter for engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58183810A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5203166A (en) * | 1991-02-22 | 1993-04-20 | Miller John W | Method and apparatus for treating diesel exhaust gas to remove fine particulate matter |
-
1982
- 1982-04-21 JP JP57066990A patent/JPS58183810A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58183810A (en) | 1983-10-27 |
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