JPH0465205B2 - - Google Patents
Info
- Publication number
- JPH0465205B2 JPH0465205B2 JP15013083A JP15013083A JPH0465205B2 JP H0465205 B2 JPH0465205 B2 JP H0465205B2 JP 15013083 A JP15013083 A JP 15013083A JP 15013083 A JP15013083 A JP 15013083A JP H0465205 B2 JPH0465205 B2 JP H0465205B2
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- tube
- evaporator
- exhaust
- glow plug
- 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
- F01N3/025—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
- F01N3/0253—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 adding fuel to exhaust gases
- F01N3/0256—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 adding fuel to exhaust gases the fuel being ignited by electrical means
-
- 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
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/36—Arrangements for supply of additional fuel
-
- 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
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/20—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a flow director or deflector
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Processes For Solid Components From Exhaust (AREA)
Description
【発明の詳細な説明】
＜技術分野＞
本発明は、例えばデイーゼル機関等の内燃機関
の排気中に含まれる微粒子を捕集して排気を浄化
処理する排気微粒子後処理装置の改良に関する。
（参考文献 実開昭58−37914号公報）
＜背景技術＞
この種の排気微粒子後処理装置として、本出願
人により実願昭57−145687号において提案されて
いるものがある。DETAILED DESCRIPTION OF THE INVENTION <Technical Field> The present invention relates to an improvement in an exhaust particulate after-treatment device that collects particulates contained in the exhaust gas of an internal combustion engine such as a diesel engine and purifies the exhaust gas.
(Reference document: Japanese Utility Model Application No. 58-37914) <Background Art> As this type of exhaust particulate after-treatment device, there is one proposed by the present applicant in U.S. Pat. No. 57-145687.
これについて説明すると、第１図に示すよう
に、機関１の排気通路２の途中にトラツプ３を介
装して、排気中のパーテイキユレートを捕集す
る。そして、トラツプ３の上流にバーナー４を配
設し、トラツプ３に一定量のパーテイキユレート
が捕集されたときに、燃料供給ポンプ５及び空気
供給ポンプ６から燃料及び空気をバーナー４に供
給して燃焼させ、これにより排気を加熱してパー
テイキユレートを焼却する。 To explain this, as shown in FIG. 1, a trap 3 is interposed in the middle of the exhaust passage 2 of the engine 1 to collect particulates in the exhaust gas. A burner 4 is disposed upstream of the trap 3, and when a certain amount of particulate is collected in the trap 3, fuel and air are supplied to the burner 4 from a fuel supply pump 5 and an air supply pump 6. This heats the exhaust gas and incinerates the particulate.
バーナー４は、第２図に示すように、燃焼筒
７、燃料及び空気の供給管８、逆流式蒸発管９、
保護筒１０及び点火装置としてのグロープラグ１
１を含んで構成される。 As shown in FIG. 2, the burner 4 includes a combustion tube 7, a fuel and air supply pipe 8, a backflow type evaporation pipe 9,
Protective cylinder 10 and glow plug 1 as an ignition device
Consists of 1.
燃焼筒７は、排気の上流側端面が閉止され下流
側端面が開放されており、周壁部の比較的下流側
部分に全周に亘つて多数の排気流入孔７ａが形成
されている。燃料及び空気の供給管８は、燃料供
給ポンプ５及び空気供給ポンプ６に接続され、燃
焼筒７の上流側端面を貫通して燃焼筒７内に突入
している。逆流式蒸発筒９は、供給管８の先端部
を包囲して、燃焼筒７内の上流側端面近傍に混合
気噴出口９ａを形成するようになつており、蒸発
筒９の周壁部の下面には保護筒１０内に開口した
小径の燃料滴下口９ｂが形成されている（第３図
参照）。蒸発筒９の下方には、軸線を直交させた
状態で保護筒１０を配置し、蒸発筒９の下面と保
護筒１０の上面とを接合して固着してある。そし
て、この接合部に前記燃料滴下口９ｂが形成され
ている。保護筒１０は両端が開放されており、一
端からその中にグロープラグ１１の先端部を挿入
配置し、燃料滴下口９ｂの下方に位置させてあ
る。 The combustion tube 7 has an exhaust upstream end face closed and a downstream end face open, and a large number of exhaust gas inflow holes 7a are formed around the entire circumference in a relatively downstream side portion of the peripheral wall. The fuel and air supply pipe 8 is connected to the fuel supply pump 5 and the air supply pump 6, and extends into the combustion cylinder 7 by penetrating the upstream end face of the combustion cylinder 7. The reverse flow type evaporator tube 9 surrounds the tip of the supply pipe 8 and forms a mixture jet port 9a near the upstream end face in the combustion tube 7. A small diameter fuel dripping port 9b is formed in the protective cylinder 10 (see FIG. 3). A protection tube 10 is disposed below the evaporator tube 9 with its axes perpendicular to each other, and the lower surface of the evaporator tube 9 and the upper surface of the protection tube 10 are joined and fixed. The fuel dripping port 9b is formed at this joint. Both ends of the protection tube 10 are open, and the tip of the glow plug 11 is inserted into the protection tube 10 from one end, and is positioned below the fuel dripping port 9b.
従つて、バーナー４に燃料と空気とを供給して
燃焼させる際は、予めグロープラグ１１に通電し
てグロープラグ１１の温度を十分に上昇させた
後、供給管８を介して燃料と空気とを蒸発筒９に
供給する。 Therefore, when supplying fuel and air to the burner 4 for combustion, the glow plug 11 is energized in advance to sufficiently raise the temperature of the glow plug 11, and then the fuel and air are supplied via the supply pipe 8. is supplied to the evaporator column 9.
蒸発筒９と供給された燃料と空気は蒸発筒９内
を逆方向に流れるが、点火前は蒸発筒９内で良く
混合せず、燃料の一部が液状のまま蒸発筒９の内
壁下面を伝わつて流れ、燃料滴下口９ｂに達して
ここからグロープラグ１１上に滴下して点火され
る。すると、蒸発筒９に設けられた混合気噴出口
９ａから同時に噴出し始めた混合気に着火して、
燃焼が開始される。燃焼が開始されると、その炎
で蒸気筒９が加熱されて燃料の気化が促進され、
空気との混合が改善されて、良好な燃焼が継続さ
れる。 The fuel and air supplied to the evaporator tube 9 flow in opposite directions inside the evaporator tube 9, but before ignition, they do not mix well in the evaporator tube 9, and some of the fuel remains in liquid form and flows on the lower surface of the inner wall of the evaporator tube 9. The fuel then flows and reaches the fuel dripping port 9b, where it drips onto the glow plug 11 and is ignited. Then, the air-fuel mixture that simultaneously began to be ejected from the air-fuel mixture outlet 9a provided in the evaporator tube 9 is ignited.
Combustion begins. When combustion starts, the steam cylinder 9 is heated by the flame and vaporization of the fuel is promoted.
Mixing with air is improved and good combustion continues.
しかしながら、このような従来の排気微粒子後
処理装置においては、混合気噴出口９ａから噴出
される混合気と、燃焼筒７の排気流入孔７ａより
流入した排気とによる空気流が保護筒１０内を吹
抜け、滴下燃料が吹飛ばされたりグロープラグ１
１が冷却されたりし、特に高速時、高負荷時燃料
が着火しないという問題点があつた。 However, in such a conventional exhaust particulate after-treatment device, the airflow caused by the mixture ejected from the mixture jet port 9a and the exhaust gas flowing in from the exhaust inflow hole 7a of the combustion tube 7 blows through the inside of the protection tube 10. , the dripping fuel may be blown away or the glow plug 1
There was a problem that the fuel would not ignite, especially at high speeds and under high loads.
＜発明の目的＞
本発明はこのような従来の問題点に鑑み、点火
装置への着火用の滴下燃料が空気流によつて吹飛
ばされたり、点火装置が冷却されるのを防止した
排気微粒子後処理装置を提供することを目的とす
る。<Object of the Invention> In view of these conventional problems, the present invention provides exhaust particulates that prevent dripping fuel for igniting an ignition device from being blown away by air currents and preventing the ignition device from being cooled. The purpose is to provide a post-processing device.
＜発明の構成＞
このため本発明は、保護筒と点火装置との間隙
に細かな空隙を有する耐熱性の部材を充填したこ
とにより、保護筒内を吹抜ける空気流の流速を低
下させ、前記目的を達成するようにしたものであ
る。<Structure of the Invention> Therefore, the present invention fills the gap between the protection tube and the ignition device with a heat-resistant member having small gaps, thereby reducing the flow velocity of the air flow blowing through the protection tube, and It is designed to achieve a purpose.
＜実施例＞
以下に第４図及び第５図に示す実施例を説明す
る。尚、前記先行技術（第１図〜第３図）と同一
要素については同一符号を付して説明を省略す
る。<Example> The example shown in FIGS. 4 and 5 will be described below. Incidentally, the same elements as those in the prior art (FIGS. 1 to 3) are given the same reference numerals and the explanation thereof will be omitted.
保護筒１０と点火装置としてのグロープラグ１
１との間隙には、細かな空隙を有する耐熱性の金
属綿１２を充填してあり、燃料滴下口９ｂから滴
下いた燃料は該金属綿１２中に浸透し、グロープ
ラグ１１に到達接触して点火されるようになつて
いる。 A protective tube 10 and a glow plug 1 as an ignition device
The gap between the glow plug 11 and the glow plug 11 is filled with a heat-resistant metal cotton 12 having small voids, and the fuel dripped from the fuel dripping port 9b penetrates into the metal cotton 12, reaches the glow plug 11, and comes into contact with it. It is about to be ignited.
従つて、細かな空隙を有する耐熱性の金属綿１
２を保護筒１０とグロープラグ１１との間隙に充
填することにより、保護筒１０内を吹抜ける空気
流の流速を低下させることができ、以て滴下燃料
が吹飛ばされたりグロープラグ１１が冷却された
りするのを防止できる。又、供給燃料が保護筒１
０内で落下排出されるものに対し、金属綿を充填
すると、燃料は直ぐ落下せず、金属綿に付着した
状態となる。そのため、グロープラグ１１の発熱
により気化が促進され、バーナー４の点火性能を
向上させることができ、これに伴いグロープラグ
１１の容量を小さくすることも可能となる。 Therefore, heat-resistant metal cotton 1 with fine voids
2 into the gap between the protective tube 10 and the glow plug 11, the flow velocity of the air flowing through the protective tube 10 can be reduced, thereby causing the dripping fuel to be blown away and the glow plug 11 to be cooled. You can prevent this from happening. Also, the supplied fuel is
If metal wool is filled with fuel that falls and is discharged inside the tank, the fuel will not fall immediately but will adhere to the metal wool. Therefore, vaporization is promoted by the heat generated by the glow plug 11, and the ignition performance of the burner 4 can be improved, and accordingly, the capacity of the glow plug 11 can be reduced.
尚、保護筒１０とグロープラグ１１との間隙に
充填する部材としては、細かな空隙を有する耐熱
性の部材であれば、例えば、金網状の金属材、セ
ラミツクス等を使用しても良いことは言うまでも
ない。 It should be noted that the material filling the gap between the protective tube 10 and the glow plug 11 may be made of a heat-resistant material with fine voids, such as a wire mesh-like metal material, ceramics, etc. Needless to say.
＜発明の効果＞
以上説明したように本発明によれば、保護筒と
点火装置との間隙に細かな空隙を有する耐熱性の
部材を充填し、保護筒内を吹抜ける空気流の流速
を低下させることにより、点火装置への着火用の
滴下燃料が吹飛ばされたり点火装置が冷却される
のを防止できるので、バーナーの点火性能を向上
させることができ、これに伴い点火装置の容量を
小さくすることも可能となる。<Effects of the Invention> As explained above, according to the present invention, the gap between the protective tube and the ignition device is filled with a heat-resistant member having small gaps, thereby reducing the flow velocity of the airflow blowing through the inside of the protective tube. By doing so, it is possible to prevent the dripping fuel for ignition into the ignition device from being blown away and the ignition device from being cooled, thereby improving the ignition performance of the burner, and thereby reducing the capacity of the ignition device. It is also possible to do so.
また、点火性能が向上するから、バーナーで消
費される燃料量も低減でき、バーナー使用による
車両としての燃費の悪化も改善でき、点火装置の
予熱に使用される電気量も低減できるという効果
もある。 In addition, since the ignition performance is improved, the amount of fuel consumed by the burner can be reduced, the deterioration in fuel efficiency of the vehicle due to the use of the burner can be improved, and the amount of electricity used to preheat the ignition system can also be reduced. .
第１図は排気微粒子後処理装置の概略構成図、
第２図は先行技術を示す第１図におけるバーナー
の縦断面図、第３図は第２図のＸ−Ｘ断面図、第
４図は本発明の一実施例を示すバーナーの縦断面
図、第５図は第４図のＹ−Ｙ断面図である。
１……機関、２……排気通路、３……トラツ
プ、４……バーナー、７……燃焼筒、８……燃料
及び空気の供給管、９……逆流式蒸発筒、９ａ…
…混合気噴出口、９ｂ……燃料滴下口、１０……
保護筒、１１……グロープラグ（点火装置）、１
２……耐熱性の金属綿（耐熱性の部材）。
Figure 1 is a schematic diagram of the exhaust particulate after-treatment device;
2 is a longitudinal sectional view of the burner in FIG. 1 showing the prior art, FIG. 3 is a sectional view taken along line XX in FIG. 2, and FIG. 4 is a longitudinal sectional view of the burner showing an embodiment of the present invention. FIG. 5 is a sectional view taken along the YY line in FIG. 4. DESCRIPTION OF SYMBOLS 1...Engine, 2...Exhaust passage, 3...Trap, 4...Burner, 7...Combustion tube, 8...Fuel and air supply pipe, 9...Reverse flow type evaporator tube, 9a...
...Mixture spout, 9b...Fuel dripping port, 10...
Protective tube, 11...Glow plug (ignition device), 1
2...Heat-resistant metal cotton (heat-resistant member).
Claims (1)
するトラツプの上流に、燃焼筒と、該燃焼筒内に
突入させた燃料及び空気の供給管の先端部を包囲
し混合気噴出口とは別に燃料滴下口を下面に形成
した逆流式蒸発筒と、該蒸発筒の下部に配設され
上面に前記蒸発筒の燃料滴下口に連通する孔を開
口させた両端開放の保護筒と、先端部を保護筒の
一端から該保護筒内に挿入して前記燃料滴下口の
下方に配置した点火装置と、を含んで構成される
バーナーを配設してなる内燃機関の排気微粒子後
処理装置において、前記保護筒と点火装置との間
隙に細かな空隙を有する耐熱性の部材を充填した
ことを特徴とする内燃機関の排気微粒子後処理装
置。1. Upstream of the trap installed in the exhaust passage to collect particulates in the exhaust gas, there is a combustion tube and a mixture injection port that surrounds the tips of the fuel and air supply pipes inserted into the combustion tube. A backflow type evaporator with a separate fuel dripping port formed on its lower surface; a protective tube with both ends open, which is disposed at the bottom of the evaporator and has a hole in its upper surface that communicates with the fuel dripping port of the evaporator; an igniter inserted into the protection cylinder from one end of the protection cylinder and disposed below the fuel dripping port; An exhaust particulate after-treatment device for an internal combustion engine, characterized in that a heat-resistant member having small gaps is filled in a gap between the protective tube and the ignition device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58150130A JPS6043112A (en) | 1983-08-19 | 1983-08-19 | Exhaust minute particle after-treatment device in internal-combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58150130A JPS6043112A (en) | 1983-08-19 | 1983-08-19 | Exhaust minute particle after-treatment device in internal-combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6043112A JPS6043112A (en) | 1985-03-07 |
| JPH0465205B2 true JPH0465205B2 (en) | 1992-10-19 |
Family
ID=15490132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58150130A Granted JPS6043112A (en) | 1983-08-19 | 1983-08-19 | Exhaust minute particle after-treatment device in internal-combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6043112A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5593870B2 (en) * | 2010-06-18 | 2014-09-24 | 株式会社Ｉｈｉ | Ignition device |
-
1983
- 1983-08-19 JP JP58150130A patent/JPS6043112A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6043112A (en) | 1985-03-07 |
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