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JPH0310845B2 - - Google Patents
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JPH0310845B2 - - Google Patents

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Publication number
JPH0310845B2
JPH0310845B2 JP7322686A JP7322686A JPH0310845B2 JP H0310845 B2 JPH0310845 B2 JP H0310845B2 JP 7322686 A JP7322686 A JP 7322686A JP 7322686 A JP7322686 A JP 7322686A JP H0310845 B2 JPH0310845 B2 JP H0310845B2
Authority
JP
Japan
Prior art keywords
fuel
glow plug
amount
filter
burner
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
Application number
JP7322686A
Other languages
Japanese (ja)
Other versions
JPS62228817A (en
Inventor
Eiji Nakajima
Akihiro Kobayashi
Hiroshi Sasaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TSUCHA SEISAKUSHO KK
Original Assignee
TSUCHA SEISAKUSHO KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by TSUCHA SEISAKUSHO KK filed Critical TSUCHA SEISAKUSHO KK
Priority to JP7322686A priority Critical patent/JPS62228817A/en
Publication of JPS62228817A publication Critical patent/JPS62228817A/en
Publication of JPH0310845B2 publication Critical patent/JPH0310845B2/ja
Granted legal-status Critical Current

Links

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  • Feeding And Controlling Fuel (AREA)

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本願は、デイゼルエンジンから排出される微粒
子をフイルタで捕捉しこれをバーナで加熱焼失さ
せてフイルタを再生させるようにした排気処理装
置におけるバーナ着火方法に関する。
[Detailed Description of the Invention] [Industrial Application Field] This application relates to burner ignition in an exhaust treatment device that captures particulates discharged from a diesel engine with a filter, heats and burns them out with a burner, and regenerates the filter. Regarding the method.

〔従来の技術〕[Conventional technology]

デイーゼルエンジンの排気処理装置は、たとえ
ば実開昭60−58815号公報に示されるように、排
気管路に耐熱性のフイルタを設け該フイルタの前
方に、燃料供給部とグロープラグから成る燃料バ
ーナを設けた構造のものである。このような装置
において、フイルタにより捕捉された、主として
カーボン粒子から成る微粒子は、微粒子は、燃料
バーナにより加熱焼却される。その結果、フイル
タは再生される。燃料バーナの着火は、次のよう
にしてなされる。すなわち、グロープラグを点火
しておき、燃料供給部から燃料を小滴状又は霧状
にして連続的にグロープラグに向け噴射し、燃料
に着火する方法である。燃料は、所定の高温が得
られるに足る十分な量が供給される。
As shown in, for example, Japanese Utility Model Application Publication No. 60-58815, an exhaust treatment device for a diesel engine includes a heat-resistant filter in the exhaust pipe and a fuel burner consisting of a fuel supply section and a glow plug in front of the filter. It has a built-in structure. In such an apparatus, the fine particles, mainly composed of carbon particles, captured by the filter are heated and incinerated by a fuel burner. As a result, the filter is regenerated. The fuel burner is ignited as follows. That is, in this method, the glow plug is ignited, and fuel is continuously injected from the fuel supply section in the form of small droplets or mist toward the glow plug, and the fuel is ignited. Fuel is supplied in an amount sufficient to obtain a predetermined high temperature.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

上記従来の着火方法では、燃料供給部からの燃
料がグロープラグに衝突付着し、グロープラグが
冷却されるから、燃料の着火性が悪いという欠点
が生じる。捕捉した微粒子の焼却には、高温の雰
囲気を必要とするが、そのためには、比較的多量
の燃料を連続的に供給しなければならず、その結
果、グロープラグの昇温も緩慢となる。
In the above conventional ignition method, the fuel from the fuel supply unit collides with and adheres to the glow plug, and the glow plug is cooled, resulting in a drawback that the ignitability of the fuel is poor. Incineration of the captured particulates requires a high-temperature atmosphere, which requires a relatively large amount of fuel to be continuously supplied, and as a result, the temperature of the glow plug increases slowly.

〔問題点を解決するための手段〕[Means for solving problems]

断続的かつ少量の燃料をインジエクタからグロ
ープラグに向けまず噴射し、次いで所定量の値ま
で噴射量を増加させ燃料を着火するようにした。
A small amount of fuel is intermittently injected from the injector toward the glow plug, and then the injection amount is increased to a predetermined value to ignite the fuel.

〔作用〕[Effect]

グロープラグに衝突、付着する燃料は、少量か
つ断続的となり、グロープラグを極端に冷却しな
い。また、付着する燃料は少量であるから、蒸発
の際の吸熱も少ない。
The amount of fuel that collides with and adheres to the glow plug is small and intermittent, and does not cool the glow plug excessively. Furthermore, since the amount of fuel attached is small, there is little heat absorption during evaporation.

〔実施例〕〔Example〕

図示装置を用いて、バーナ着火方法の実施例を
説明する。排気処理装置は、排気管路に設けたフ
イルタ1とその上流側のバーナ装置2から成り、
バーナ装置2はグロープラグ3と、燃料供給用の
インジエクタ4とを有している。5は、温度セン
サ、6は制御部である。バーナ装置2には、二次
エア供給管7と排気管8とが連結されている。
An embodiment of the burner ignition method will be described using the illustrated device. The exhaust treatment device consists of a filter 1 provided in the exhaust pipe line and a burner device 2 on the upstream side thereof.
The burner device 2 includes a glow plug 3 and an injector 4 for supplying fuel. 5 is a temperature sensor, and 6 is a control section. A secondary air supply pipe 7 and an exhaust pipe 8 are connected to the burner device 2 .

フイルタ1が微粒子を捕捉し所定の目づまり状
態に達すると、グロープラグ3が点火され、イン
ジエクタ4から燃料が供給され、グロープラグ3
により着火燃焼する。そうすると、雰囲気は昇温
しフイルタ1に捕捉された微粒子を着火。焼失さ
せる。微粒子が焼失すると、フイルタ1の目づま
り状態は解消し、フイルタ1が再生する。
When the filter 1 captures particulates and reaches a predetermined clogging state, the glow plug 3 is ignited, fuel is supplied from the injector 4, and the glow plug 3
ignites and burns. This causes the atmosphere to rise in temperature and ignite the particulates captured by the filter 1. Burn it down. When the fine particles are burned away, the clogging state of the filter 1 is cleared and the filter 1 is regenerated.

次に、本発明の着火方法について説明すると、
点火したグロープラグ3に燃料を噴射する際に、
まず、第2図のように、断続的かつ少量の燃料を
グロープラグ3に向け供給し、次いで所定の高温
を得るに必要な量すなわち所定量の燃料を供給す
る方法である。ここで、断続的というのは、1回
または所定時間間隔で数回の燃料噴射回数で供給
することであり、また少量とは、実施例では所定
量の燃料の50%の量のことである。
Next, the ignition method of the present invention will be explained.
When injecting fuel to the ignited glow plug 3,
First, as shown in FIG. 2, a small amount of fuel is intermittently supplied to the glow plug 3, and then a predetermined amount of fuel is supplied as required to obtain a predetermined high temperature. Here, intermittent means to supply fuel once or several times at predetermined time intervals, and a small amount refers to 50% of the predetermined amount of fuel in the example. .

断続的燃料供給から所定量の燃料供給への移行
は、第2図のように、直ちに燃料を増量する方法
(グラフa)、または徐々に増量する方法のいずれ
によつてもよい。
The transition from intermittent fuel supply to predetermined amount of fuel supply may be achieved either by increasing the amount of fuel immediately (graph a), as shown in FIG. 2, or by gradually increasing the amount of fuel.

上記所定量、少量、燃料噴射回数の値は、排気
処理装置の仕様に応じ、実験的に定められる。
The values of the predetermined amount, small amount, and number of fuel injections are determined experimentally according to the specifications of the exhaust treatment device.

断続的に少量の燃料がグロープラグに供給され
ると燃料が着火する。次いで、所定量の燃料が供
給されると、火炎が生じ、雰囲気を加熱する。
When small amounts of fuel are intermittently supplied to the glow plug, the fuel ignites. Then, when a predetermined amount of fuel is supplied, a flame is generated and heats the atmosphere.

〔効果〕〔effect〕

燃料着火時において、グロープラグに供給され
る燃料は、断続的かつ少量であり、グロープラグ
を冷却させないから、グロープラグの発熱温度は
低下せず、速やかな着火をもたらす。
At the time of fuel ignition, the fuel supplied to the glow plug is intermittent and small, and does not cool the glow plug, so the heat generation temperature of the glow plug does not decrease, resulting in prompt ignition.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は、本発明が適用される排気処理装置の
断面図、第2図は本発明の方法による燃料供給量
の変化を示す図である。 1……フイルタ、2……バーナ装置、3……グ
ロープラグ、4……インジエクタ。
FIG. 1 is a sectional view of an exhaust treatment device to which the present invention is applied, and FIG. 2 is a diagram showing changes in fuel supply amount according to the method of the present invention. 1... Filter, 2... Burner device, 3... Glow plug, 4... Injector.

Claims (1)

【特許請求の範囲】[Claims] 1 断続的かつ少量の燃料をインジエクタからグ
ロープラグに向けまず噴射し、次いで所定量の値
まで噴射量を増加させ燃料を着火するようにした
排気処理装置のバーナ着火方法。
1. A burner ignition method for an exhaust treatment device, in which a small amount of fuel is intermittently injected from an injector toward a glow plug, and then the injection amount is increased to a predetermined value to ignite the fuel.
JP7322686A 1986-03-31 1986-03-31 Burner igniting method for exhaust device Granted JPS62228817A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7322686A JPS62228817A (en) 1986-03-31 1986-03-31 Burner igniting method for exhaust device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7322686A JPS62228817A (en) 1986-03-31 1986-03-31 Burner igniting method for exhaust device

Publications (2)

Publication Number Publication Date
JPS62228817A JPS62228817A (en) 1987-10-07
JPH0310845B2 true JPH0310845B2 (en) 1991-02-14

Family

ID=13512053

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7322686A Granted JPS62228817A (en) 1986-03-31 1986-03-31 Burner igniting method for exhaust device

Country Status (1)

Country Link
JP (1) JPS62228817A (en)

Also Published As

Publication number Publication date
JPS62228817A (en) 1987-10-07

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