JPH0327735B2 - - Google Patents
Info
- Publication number
- JPH0327735B2 JPH0327735B2 JP6699282A JP6699282A JPH0327735B2 JP H0327735 B2 JPH0327735 B2 JP H0327735B2 JP 6699282 A JP6699282 A JP 6699282A JP 6699282 A JP6699282 A JP 6699282A JP H0327735 B2 JPH0327735 B2 JP H0327735B2
- Authority
- JP
- Japan
- Prior art keywords
- engine
- heater element
- particle collector
- electric heater
- particles
- 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輛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これに付着している可
燃性粒子及びこ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. When a particle collector is regenerated using an electric heater element, as the electric heater element generates heat, the combustible particles attached to it and the combustible particles around it burn, and the flame collects the particles. This is carried out locally depending on the location of the electric heater element by propagating downstream of the collection material along with the flow of exhaust gas passing through the device.
この電子式ヒータ素子による粒子捕集器の再生
は、前記火炎が排出ガス流により吹け消えないよ
う、排気ガス流速がさほど高くならない所定のエ
ンジン低回転数域にに於て行われる。粒子捕集器
の再生過程に於て、複数個の全ての電子式ヒータ
素子に通電が行われる以前にデイーゼルエンジン
が高速運転され、そのエンジン回転数が前記所定
のエンジン低回転数域外になると、その時点にて
前記電子式ヒータ素子に対する通電が停止される
と、一部の電子式ヒータ素子に通電が行われず、
その一部の電子式ヒータ素子には可燃性粒子が付
着したままになり、以後各電子式ヒータ素子の粒
子付着量が通電が行われた電子式ヒータ素子と通
電が行われなかつた電子式ヒータ素子とで異な
り、次の再生時に於て捕集粒子の着火を行わない
電子式ヒータ素子が出てくる。このため確実に捕
集粒子の着火を行うためには各電子式ヒータ素子
の粒子付着量を管理する必要があり、そのための
制御は繁雑なものになる。 This regeneration of the particle collector by the electronic heater element is carried out in a predetermined low engine speed range where the exhaust gas flow rate does not become very high so that the flame is not blown out by the exhaust gas flow. In the regeneration process of the particle collector, if the diesel engine is operated at high speed before all of the plurality of electronic heater elements are energized, and the engine speed falls outside the predetermined low engine speed range, If the power to the electronic heater element is stopped at that point, some of the electronic heater elements will not be energized,
Combustible particles remained attached to some of the electronic heater elements, and from now on, the amount of particles attached to each electronic heater element is the same as that of the electronic heater element that was energized and the electronic heater element that was not energized. Unlike conventional heating elements, electronic heater elements are now available that do not ignite the collected particles during the next regeneration. Therefore, in order to reliably ignite the collected particles, it is necessary to control the amount of particles attached to each electronic heater element, and the control for this becomes complicated.
本発明は予め定められた再生時期が到来した後
にエンジンが所定の運転状態にて運転された時、
前記電子式ヒータ素子に通電を行い、その通電過
程に於てエンジンが所定の運転状態以外の状態に
て運転されてもその通電を続行し、全ての電子式
ヒータ素子に通電が行われた後その通電を停止す
ることにより、各電子式ヒータ素子の粒子付着量
を相互に常に一様にし、これにより各電子式ヒー
タ素子に付着している付着粒子量の管理を容易に
し、その制御を繁雑なものにすることがないエン
ジン用粒子捕集器の再生方法を提供せんとするも
のである。 In the present invention, when the engine is operated in a predetermined operating state after a predetermined regeneration time has arrived,
The electronic heater element is energized, and during the energization process, the energization is continued even if the engine is operated in a state other than the predetermined operating state, and after all the electronic heater elements are energized. By stopping the energization, the amount of particles adhering to each electronic heater element is always uniform, making it easier to manage the amount of adhering particles adhering to each electronic heater element, making the control less complicated. It is an object of the present invention to provide a method for regenerating a particle collector for an engine without causing damage to the engine.
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断面図である。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、ハニカル状セ
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８4８5と８
６、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 a sectional view showing the upstream end face 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 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 are arranged symmetrically in pairs with respect to the center of the upstream end face of the filter element 6, and each of these electric heater elements has an individual connection terminal 9 at one end thereof. 1 to 9 8 and are commonly grounded to the ground element 10 at the other end. 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、この後にデイーゼルエン
ジンが所定の低回転数域にて運転されると、スイ
ツチ１１1〜１１8をそれ以降のエンジン回転数の
拘らず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. Later, when the diesel engine is operated in a predetermined low rotational speed range, switches 111 to 118 are sequentially closed for a predetermined period of time in order of the subscript number of the drawing number, regardless of the subsequent engine speed. There is.
従つて、粒子捕集器の再生時期が到来し、その
後デイーゼルエンジンが所定の低回転数域にて運
転されると、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、この
時のエンジン回転数が所定の低回転数域外であつ
ても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８8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 the time for regeneration of the particle collector arrives and the diesel engine is then operated in a predetermined low rotational speed range, the electric heater element 81 is first energized, and the energization is continued for a predetermined period of time. When this is done, even if the engine speed at this time is outside the predetermined low rotation speed range, the electrical supply to the electric heater element 8 1 is stopped, and then the electrical supply to the electric heater element 8 2 is started. 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 8 is started to be energized. Electricity is applied sequentially in the order of the subscript numbers of the drawing numbers 4 to 8 .
この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。従つて、電子式ヒータ素子に
付着している粒子付着量が各電子式ヒータ素子間
に於て常に一様になり、例えばエンジン回転数の
積算量を管理するのみで各電子式ヒータ素子に付
着している付着量を推定でき、これによつて電子
式ヒータ素子がその周りにある捕集粒子を確実に
着火する時期を適切に設定することができるよう
になる。 Electricity is always supplied to the electric heater elements from the electric heater element 8 1 to the electric heater element 8 8 . Therefore, the amount of particles adhering to the electronic heater element is always uniform between each electronic heater element, and for example, by simply managing the cumulative amount of engine revolutions, it is possible to reduce the amount of particles adhering to each electronic heater element. It is possible to estimate the amount of adhesion caused by the electronic heater element, and thereby to appropriately set the timing at which the electronic heater element reliably ignites the collected particles around it.
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 above in detail with reference to specific embodiments, those skilled in the art will recognize 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記側端面を示す端
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 side end surface 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)
素子が分散配設された粒子捕集器の再生方法にし
て、予め定められた再生時期が到来した後にエン
ジンが所定の運転状態にて運転された時、前記電
子式ヒータ素子に順次通電を行い、その通電過程
に於てエンジンが前記所定の運転状態以外の状態
にて運転されてもその通電を続行することを特徴
とするエンジン用粒子捕集器の再生方法。1. A regeneration method for a particle collector in which a plurality of electronic heater elements are distributed on the upstream end face of a collection material, in which the engine is operated in a predetermined operating state after a predetermined regeneration time has arrived. An engine for an engine, characterized in that when the engine is operated, the electronic heater elements are sequentially energized, and during the energization process, the energization is continued even if the engine is operated in a state other than the predetermined operating state. How to regenerate a particle collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57066992A JPS58183812A (en) | 1982-04-21 | 1982-04-21 | Regenerating process in particle collector for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57066992A JPS58183812A (en) | 1982-04-21 | 1982-04-21 | Regenerating process in particle collector for engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58183812A JPS58183812A (en) | 1983-10-27 |
| JPH0327735B2 true JPH0327735B2 (en) | 1991-04-16 |
Family
ID=13332005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57066992A Granted JPS58183812A (en) | 1982-04-21 | 1982-04-21 | Regenerating process in particle collector for engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58183812A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080859A (en) * | 2018-01-26 | 2019-08-02 | 比亚迪股份有限公司 | A kind of particulate regeneration device and method and vehicle |
-
1982
- 1982-04-21 JP JP57066992A patent/JPS58183812A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58183812A (en) | 1983-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0244061B1 (en) | Apparatus for the removal of particulate material from a gas | |
| JPS58210310A (en) | Device for removing carbon particles of internal combustion engine | |
| JPS58199018A (en) | Purifying device equipped with electrically heating means for fine particle contained in waste gas | |
| JPH05240027A (en) | Exhaust fine particle purifying device | |
| JP3147356B2 (en) | Exhaust gas particulate purification equipment | |
| JPH0327735B2 (en) | ||
| JPH0115684B2 (en) | ||
| JPH0330407B2 (en) | ||
| JPH0327734B2 (en) | ||
| JPH0232450B2 (en) | ||
| JPH0122447B2 (en) | ||
| JPH0771226A (en) | Exhaust particulate purifying device | |
| JPS645048Y2 (en) | ||
| JPH10266826A (en) | Exhaust gas treatment equipment for diesel engines | |
| JPH05125925A (en) | Exhaust fine particle purifying device | |
| JP2847976B2 (en) | Exhaust gas purification device for internal combustion engine | |
| JPH0214524B2 (en) | ||
| JPS5996416A (en) | Exhaust particle emission control device for diesel engine | |
| JP2816375B2 (en) | Particulate trap mechanism | |
| JP3412362B2 (en) | Exhaust particulate processing equipment for internal combustion engines | |
| JPH0385315A (en) | Exhaust gas purifying device | |
| KR950011684B1 (en) | Diesel particulate combustion device using thin film heater | |
| JPS6125907A (en) | Regeneration of particle collector | |
| JP3580563B2 (en) | Exhaust gas particulate purification system for internal combustion engine | |
| JP2001132431A (en) | Engine exhaust gas purification device |