JPH068255Y2 - Exhaust particulate treatment device - Google Patents
Exhaust particulate treatment deviceInfo
- Publication number
- JPH068255Y2 JPH068255Y2 JP1988101465U JP10146588U JPH068255Y2 JP H068255 Y2 JPH068255 Y2 JP H068255Y2 JP 1988101465 U JP1988101465 U JP 1988101465U JP 10146588 U JP10146588 U JP 10146588U JP H068255 Y2 JPH068255 Y2 JP H068255Y2
- Authority
- JP
- Japan
- Prior art keywords
- fuel supply
- exhaust
- pipe
- burner device
- filter
- 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
Description
【考案の詳細な説明】 ［産業上の利用分野］ 本願はディーゼルエンジンなどから排出される排気中に
含まれる微粒子、主としてカーボン粒子を処理するため
の排気微粒子処理装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present application relates to an exhaust particle processing apparatus for processing particles, mainly carbon particles, contained in exhaust gas discharged from a diesel engine or the like.
［従来の技術］ 実開昭62-8318号公報に示されたように、入出口を設け
たケース内に耐熱フィルタを配設し、入口側にバーナ装
置を設けた構成の排気微粒子処理装置が知られている。[Prior Art] As disclosed in Japanese Utility Model Laid-Open No. 62-8318, there is provided an exhaust particulate treatment device having a structure in which a heat-resistant filter is provided in a case provided with an inlet / outlet and a burner device is provided on the inlet side. Are known.
バーナ装置には、第３図のように、ゴム製の燃料供給ホ
ース１や、バーナ装置を制御する回路に接続される、樹
脂製のコネクタ２が連結されている。As shown in FIG. 3, a rubber fuel supply hose 1 and a resin connector 2 connected to a circuit for controlling the burner device are connected to the burner device.
排気中の微粒子は、入口から流入し耐熱フィルタにより
捕捉される。捕捉が進み所定の目づまり状態に達する
と、バーナ装置が始動し、排気を加熱する。昇温した排
気は、耐熱フィルタに捕捉された微粒子を焼却し、耐熱
フィルタを再生させる。The particulates in the exhaust flow from the inlet and are captured by the heat resistant filter. When the trapping progresses and reaches a predetermined clogging condition, the burner device starts and heats the exhaust gas. The heated exhaust gas incinerates the fine particles captured by the heat resistant filter, and regenerates the heat resistant filter.
［考案が解決しようとする課題］ バーナ装置が始動し、排気が加熱されると、バーナ装置
自体も加熱され、昇温する。バーナ装置自体の温度があ
る一定以上にまで達すると、バーナ装置に連結された燃
料供給ホースやコネクタが溶融し、バーナ装置を停止さ
せる恐れをもたらす。[Problems to be Solved by the Invention] When the burner device is started and the exhaust gas is heated, the burner device itself is also heated and its temperature rises. When the temperature of the burner device itself reaches a certain temperature or higher, the fuel supply hose or connector connected to the burner device melts, which may cause the burner device to stop.
［課題を解決するための手段］ 入出口を有するケース内に耐熱フィルタを配設し、入口
側に、低融点材料から成る部品を有する燃料供給部を設
けたバーナ装置を取付けた排気微粒子処理装置におい
て、ケース入口側と燃料供給部との間に金属製の燃料供
給パイプを設け、燃料供給部をケースの入口側から離隔
させた構成としたものである。[Means for Solving the Problems] Exhaust particulate treatment apparatus in which a heat-resistant filter is arranged in a case having an inlet / outlet, and a burner device having a fuel supply section having a component made of a low melting point material is attached to the inlet side. In the above, a metal fuel supply pipe is provided between the case inlet side and the fuel supply section, and the fuel supply section is separated from the case inlet side.
［作用］ バーナ装置が始動すると、排気は加熱され、同時にバー
ナ装置自体も加熱される。燃料供給ホースやコネクタが
連結された燃料供給部には、ケース入口側からの熱が燃
料供給パイプを介して、伝達されることになる。燃料供
給パイプは、外気により冷却され、高温にまで加熱され
ない。燃料供給パイプの端部に設けられた燃料供給部も
同様に高温にまで加熱されない。[Operation] When the burner device is started, the exhaust gas is heated, and at the same time, the burner device itself is heated. The heat from the case inlet side is transferred to the fuel supply section to which the fuel supply hose and the connector are connected, through the fuel supply pipe. The fuel supply pipe is cooled by the outside air and is not heated to a high temperature. Similarly, the fuel supply unit provided at the end of the fuel supply pipe is not heated to a high temperature.
［実施例］ 第１図は、ディーゼル機関に装着された排気微粒子処理
装置１０であり、フィルタ部１１とバーナ装置１２から
成る。フィルタ部１１は、入出口１３、１４を有するケ
ース１５内に、微細な濾過流路を多数設けたセラミック
ハニカム状のフィルタ１６を有する。バーナ装置１２
は、フィルタ部１１の入口１３側に設けられ、燃料供給
部１７と点火手段１８とを有している。燃料供給部１７
は、燃料の噴射量を制御する機能を有するものであり、
外筒２２の閉塞端側に金属製の燃料供給パイプ２８を介
して所定距離の間隔を保って取付けられる。燃料供給部
１７には、ゴム製の燃料供給ホース１と樹脂製のコネク
タ２とが連結される。本実施例におけるバーナ装置１２
は、一方の開放端に衝突板１９を有し、他方の閉塞端に
燃料噴射ノズル２０を設けた内筒２１と、その周りの外
筒２２とを有しており、さらに衝突板１９の周囲に点火
手段すなわち点火プラグ１８が設けられている。外筒２
２の閉塞端側には、接線方向に排気導入管23aが、また
外筒２２の開放端側にも排気導入管23bが各々設けら
れ、これらの排気導入管は一方端がフィルタ部１１のケ
ース１５内に連通し、他方端がディーゼル機関の排気管
２４に連結される。排気導入管23aには、補助エア吸入
管２５が連結される。補助エア吸入管２５は、外気へ開
放しバイパス口を有するバイパス管25aが設けられてい
る。補助エア吸入管２５と排気導入管23aとの連結部、
およびバイパス管25aには、切りかえ弁26a,26bが取付ら
れる。これらの切りかえ弁26a,26bは、制御装置２７に
連結され、制御装置２７は、ディーゼル機関の負荷セン
サー（図示せず）に連結される。補助エア吸入管２５
は、図示しない空気供給装置に連結される。制御装置２
７は、負荷センサからの信号に応じて切りかえ弁26a、26
bを開閉させるように機能するものであり、周知の構成
のものである。上記実施例において、排気導入管23a、23
bは、排気管２４から分岐した２本の管になっている
が、排気導入管は、１本とすることも可能である。[Embodiment] FIG. 1 shows an exhaust particulate treatment device 10 mounted on a diesel engine, which comprises a filter portion 11 and a burner device 12. The filter unit 11 has a ceramic honeycomb filter 16 provided with a large number of fine filtration channels in a case 15 having inlets and outlets 13 and 14. Burner unit 12
Is provided on the inlet 13 side of the filter unit 11 and has a fuel supply unit 17 and an ignition means 18. Fuel supply unit 17
Has a function of controlling the injection amount of fuel,
It is attached to the closed end side of the outer cylinder 22 via a metal fuel supply pipe 28 at a predetermined distance. The fuel supply hose 1 made of rubber and the connector 2 made of resin are connected to the fuel supply unit 17. Burner device 12 in the present embodiment
Has an inner cylinder 21 having a collision plate 19 at one open end and a fuel injection nozzle 20 at the other closed end, and an outer cylinder 22 around the inner cylinder 21, and further surrounds the collision plate 19. An ignition means, that is, an ignition plug 18 is provided in the. Outer cylinder 2
An exhaust gas introduction pipe 23a is provided in a tangential direction on the closed end side of 2, and an exhaust gas introduction pipe 23b is also provided on the open end side of the outer cylinder 22, and one end of each of these exhaust gas introduction pipes is the case of the filter portion 11. 15 and is connected to the exhaust pipe 24 of the diesel engine at the other end. An auxiliary air intake pipe 25 is connected to the exhaust introduction pipe 23a. The auxiliary air suction pipe 25 is provided with a bypass pipe 25a which is open to the outside air and has a bypass port. A connecting portion between the auxiliary air intake pipe 25 and the exhaust introduction pipe 23a,
The switching valves 26a and 26b are attached to the bypass pipe 25a. These switching valves 26a, 26b are connected to a control device 27, which is connected to a load sensor (not shown) of the diesel engine. Auxiliary air suction pipe 25
Is connected to an air supply device (not shown). Control device 2
7 is a switching valve 26a, 26 according to the signal from the load sensor.
It functions to open and close b, and has a well-known configuration. In the above embodiment, the exhaust introduction pipes 23a, 23
Although b is two pipes branched from the exhaust pipe 24, the number of the exhaust introduction pipe may be one.
第１図、第２図において、ディーゼル機関から排出され
た排気は、排気管２４、排気導入管23a、23bを通って、
バーナ装置１２に至り、さらに入口１３からフィルタ部
１１に流入する。フィルタ部１１で、排気中の微粒子
（主としてカーボン粒子から成る）は、フィルタ１６に
より捕捉される。フィルタ１６が所定の目づまり状態に
至ると、これを感知して点火プラグ１８が点火し、同時
に燃料噴射ノズル２０から燃料が噴射されこれが衝突板
１９に衝突して周囲に散乱し、排気流と混合しながらフ
ィルタ部１１に向け流れる。排気中の酸素の存在下で、
混合気は、点火プラグ１８により着火、燃焼し、排気を
加熱し、さらにフィルタ１６を加熱する。加熱されたフ
ィルタ１６が所定の温度に達すると、フィルタ１６に捕
捉された微粒子は焼失し、フィルタ１６の機能は再生す
る。以上は、ディーゼル機関が低負荷作動時の作動であ
る。In FIGS. 1 and 2, the exhaust gas discharged from the diesel engine passes through the exhaust pipe 24 and the exhaust introduction pipes 23a and 23b,
It reaches the burner device 12, and further flows into the filter portion 11 from the inlet 13. Fine particles (mainly composed of carbon particles) in the exhaust gas are captured by the filter 16 in the filter unit 11. When the filter 16 reaches a predetermined clogging state, this is sensed and the spark plug 18 is ignited. At the same time, fuel is injected from the fuel injection nozzle 20, which collides with the collision plate 19 and scatters to the surroundings. It flows toward the filter unit 11 while being mixed. In the presence of oxygen in the exhaust,
The air-fuel mixture is ignited and burned by the spark plug 18, heats the exhaust gas, and further heats the filter 16. When the heated filter 16 reaches a predetermined temperature, the particulates trapped in the filter 16 are burned out and the function of the filter 16 is regenerated. The above is the operation when the diesel engine operates at low load.
高負荷作動時において、この状態を感知する負荷センサ
ーからの信号により、切りかえ弁26a、26bは、その位置
を変え、排気管２４と排気導入管23aと遮断し、バイパ
ス管25aを閉止し、補助エア吸入管２５と排気導入管23a
とを連通させる。これにより、補助エアは、バーナ装置
１２へ供給されることになる。高負荷作動状態に至るま
での間、排気温は、十分に上昇させられており、補助エ
アを流入させても燃焼不良は生じない。At the time of high load operation, the switching valves 26a and 26b change their positions by a signal from a load sensor that senses this state, shut off the exhaust pipe 24 and the exhaust introduction pipe 23a, and close the bypass pipe 25a. Air intake pipe 25 and exhaust introduction pipe 23a
And communicate with. As a result, the auxiliary air is supplied to the burner device 12. The exhaust gas temperature is sufficiently raised until the high load operation state is reached, and the combustion failure does not occur even when the auxiliary air is introduced.
このように、負荷の状態に応じて補助エアの供給を制御
するのは、低負荷作動時における排気中の酸素濃度が大
であり、補助エアを要しないのに対し、高負荷作動時で
は酸素濃度が小であり、良好な着火、燃焼をもたらすの
に、補助エアを必要とするためである。In this way, controlling the supply of auxiliary air according to the state of the load is because the oxygen concentration in the exhaust gas at the time of low load operation is high, and the auxiliary air is not required, whereas the oxygen at the time of high load operation is controlled. This is because the concentration is low and auxiliary air is required to bring about good ignition and combustion.
［考案の効果］ 本考案の排気微粒子装置は、バーナ装置が始動し、排気
を加熱させても、燃料供給部の温度を高温にまで昇温さ
せないから、燃料供給部に連結されたホースやコネクタ
の低融点材料から成る部品を溶融させず、これらの部品
を耐熱材に変更することなく作動不良を防止する。[Advantages of the Invention] The exhaust particulate device of the present invention does not raise the temperature of the fuel supply unit to a high temperature even if the burner device is started and heats the exhaust gas. Therefore, a hose or connector connected to the fuel supply unit is used. No parts made of low melting point materials are melted, and malfunctions are prevented without changing these parts to heat resistant materials.
第１図は、本考案の排気微粒子処理装置の断面図、第２
図は第１図の一部拡大図、そして第３図は従来のバーナ
装置を有する排気微粒子処理装置の一部の断面図であ
る。 １２……バーナ装置、１７……燃料供給部 １８……点火プラグ、23a,23b……排気導入管 ２５……補助エア吸入管 26a,26b……切りかえ弁FIG. 1 is a sectional view of an exhaust particulate treatment device of the present invention, and FIG.
FIG. 1 is a partially enlarged view of FIG. 1, and FIG. 3 is a sectional view of a part of an exhaust particulate treatment device having a conventional burner device. 12 ... Burner device, 17 ... Fuel supply unit 18 ... Spark plug, 23a, 23b ... Exhaust gas introduction pipe 25 ... Auxiliary air intake pipe 26a, 26b ... Switching valve
Claims (1)
配設し、入口側に、低融点材料から成る部品を有する燃
料供給部を設けたバーナ装置を取付けた排気微粒子処理
装置において、ケース入口側と燃料供給部との間に金属
製の燃料供給パイプを設け、燃料供給部をケースの入口
側から離隔させた排気微粒子処理装置。1. An exhaust particulate treatment apparatus in which a heat-resistant filter is arranged in a case having an inlet / outlet, and a burner device having a fuel supply section having a component made of a low melting point material is attached to the inlet side of the case. An exhaust particulate treatment device in which a metal fuel supply pipe is provided between the side and the fuel supply unit, and the fuel supply unit is separated from the inlet side of the case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988101465U JPH068255Y2 (en) | 1988-07-30 | 1988-07-30 | Exhaust particulate treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988101465U JPH068255Y2 (en) | 1988-07-30 | 1988-07-30 | Exhaust particulate treatment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0222616U JPH0222616U (en) | 1990-02-15 |
| JPH068255Y2 true JPH068255Y2 (en) | 1994-03-02 |
Family
ID=31330487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988101465U Expired - Lifetime JPH068255Y2 (en) | 1988-07-30 | 1988-07-30 | Exhaust particulate treatment device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH068255Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4614448B2 (en) * | 2005-11-25 | 2011-01-19 | ボッシュ株式会社 | Exhaust gas purification device for internal combustion engine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61187911U (en) * | 1985-05-16 | 1986-11-22 | ||
| JPH0324820Y2 (en) * | 1985-06-28 | 1991-05-30 |
-
1988
- 1988-07-30 JP JP1988101465U patent/JPH068255Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0222616U (en) | 1990-02-15 |
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