JPH0519564Y2 - - Google Patents
Info
- Publication number
- JPH0519564Y2 JPH0519564Y2 JP6627486U JP6627486U JPH0519564Y2 JP H0519564 Y2 JPH0519564 Y2 JP H0519564Y2 JP 6627486 U JP6627486 U JP 6627486U JP 6627486 U JP6627486 U JP 6627486U JP H0519564 Y2 JPH0519564 Y2 JP H0519564Y2
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- fuel injection
- valve
- injection valve
- heater
- 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
- 239000000446 fuel Substances 0.000 claims description 85
- 238000002347 injection Methods 0.000 claims description 36
- 239000007924 injection Substances 0.000 claims description 36
- 230000005611 electricity Effects 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 description 9
- 238000009834 vaporization Methods 0.000 description 5
- 230000008016 vaporization Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Description
【考案の詳細な説明】
〔産業上の利用分野〕
この考案は、燃料室内の燃料噴射ノズルの他に
燃料噴射弁から補助燃料を噴射するデイーゼルエ
ンジンの補助燃料供給装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an auxiliary fuel supply device for a diesel engine that injects auxiliary fuel from a fuel injection valve in addition to a fuel injection nozzle in a fuel chamber.
燃料噴射ノズルからの燃料噴射は筒内噴射であ
るために燃料と空気との混合が悪くなつている。
特に、エンジン負荷が大きい場合は燃料噴射量が
多いため、混合が悪く、燃焼性および着火性が悪
化している。
Since the fuel injection from the fuel injection nozzle is in-cylinder injection, the mixing of fuel and air is poor.
In particular, when the engine load is large, the amount of fuel injected is large, resulting in poor mixing and poor combustibility and ignitability.
特開昭57−46053号等に示されるデイーゼルエ
ンジンでは吸気系に燃料噴射弁を設け、この燃料
噴射弁から補助燃料を噴射し、これにより燃料噴
射ノズルからの燃料噴射時に燃焼及び着火し易い
雰囲気を形成している。しかし噴射された補助燃
料の気化を促進する手段は従来技術では特になか
つた。 In the diesel engine shown in Japanese Patent Application Laid-open No. 57-46053, etc., a fuel injection valve is provided in the intake system, and auxiliary fuel is injected from this fuel injection valve, thereby creating an atmosphere that facilitates combustion and ignition when fuel is injected from the fuel injection nozzle. is formed. However, in the prior art, there was no particular means for promoting vaporization of the injected auxiliary fuel.
この考案の目的は、噴射された補助燃料の気化
を促進して燃焼性及び着火性の一層の向上を図る
ことができるデイーゼルエンジンの補助燃料供給
装置を提供することである。
An object of this invention is to provide an auxiliary fuel supply device for a diesel engine that can promote vaporization of injected auxiliary fuel to further improve combustibility and ignitability.
この考案によるデイーゼルエンジンの補助燃料
供給装置は、吸気通路へ補助燃料を噴射する燃料
噴射弁と、吸気通路に配設され燃料噴射弁から噴
射された補助燃料を加熱するヒータと、燃料噴射
ポンプに設けられアクセルペダルに連動する燃料
レバーと、この燃料レバーに連動しエンジン負荷
が所定値以上にある場合にフイードポンプから燃
料噴射弁へ補助燃料を導く弁と、燃料レバーに連
動しエンジン負荷が所定値以上にある場合にヒー
タを通電するスイツチとを有して成る。
The auxiliary fuel supply device for a diesel engine according to this invention includes a fuel injection valve that injects auxiliary fuel into the intake passage, a heater that is disposed in the intake passage and heats the auxiliary fuel injected from the fuel injection valve, and a fuel injection pump. A fuel lever is provided and linked to the accelerator pedal, a valve linked to the fuel lever and which guides auxiliary fuel from the feed pump to the fuel injection valve when the engine load is above a predetermined value, and a valve linked to the fuel lever and linked to the engine load to a predetermined value. and a switch that energizes the heater when the above conditions are met.
燃料噴射ポンプの燃料レバーはアクセルペダ
ル、したがつてエンジン負荷に関係して揺動す
る。エンジン負荷が所定値以上になると、ヒータ
が通電状態になるとともに弁を介してフイードポ
ンプから燃料噴射弁へ補助燃料が送られ、補助燃
料が燃料噴射弁から噴射され、噴射される補助燃
料が付着する吸気通路の壁面はヒータにより加熱
されているので、噴射された補助燃料の気化が促
進される。こうして良好な気化状態の補助燃料が
燃焼室へ導かれる。
The fuel lever of the fuel injection pump swings in dependence on the accelerator pedal and thus on the engine load. When the engine load exceeds a predetermined value, the heater becomes energized and auxiliary fuel is sent from the feed pump to the fuel injection valve via the valve, the auxiliary fuel is injected from the fuel injection valve, and the injected auxiliary fuel adheres to the heater. Since the wall surface of the intake passage is heated by the heater, vaporization of the injected auxiliary fuel is promoted. In this way, the auxiliary fuel in a good vaporized state is introduced into the combustion chamber.
ヒータにより補助燃料の気化が促進されるの
で、燃焼性及び着火性の一層の向上を図ることが
できる。補助燃料の噴射及びヒータの通電は燃料
と空気との混合が悪いエンジン高負荷時に限定し
て行なわれるので、燃料の消費量及びヒータの消
費電力を抑えることができる。
Since vaporization of the auxiliary fuel is promoted by the heater, combustibility and ignitability can be further improved. Since the injection of auxiliary fuel and the energization of the heater are performed only when the engine is under high load when the mixture of fuel and air is poor, fuel consumption and power consumption of the heater can be suppressed.
以下、図示の実施例についてこの考案を説明す
る。
This invention will be explained below with reference to the illustrated embodiment.
図面は直接噴射式デイーゼルエンジンを示し、
ピストン１０の上面には縦断面がトロイタル形の
直接燃焼室１２が形成され、ピストン１０はシリ
ンダブロツク１４内を摺動可能に配設される。シ
リンダヘツド１６はシリンダブロツク１４の上部
に固設され、燃焼室１８がピストン１０、シリン
ダブロツク１４及びシリンダヘツド１６により画
定される。アダプタ２０は、吸気マニホールド２
２とシリンダヘツド１６との間に配設され、吸気
通路２４は、吸気マニホールド２２、アダプタ２
４及びシリンダヘツド１６の吸気ポート２６に形
成されて燃焼室１８へ連動している。吸気弁２８
は、吸気ポート２６と燃焼室１８との間に配設さ
れ、吸気行程時に開く。アダプタ２０には燃料噴
射弁３０が取付けられるとともに、燃料噴射弁３
０から噴射された補助燃料が当たるアダプタ２０
の壁面にはヒータ３２が取付けられている。燃料
噴射ポンプ３４は、フイードポンプ３６から燃料
を圧送され、エンジン回転数及び燃料レバー３８
等により決まる量の燃料をクランク軸の回転に同
期して各燃焼室１８の燃料噴射ノズル（図示せ
ず）へ圧送している。燃料レバー３８は、アクセ
ルペダルに連動し、切換え部４０内のスイツチ及
び開閉弁を操作する。切換え部４０内のスイツ
チ、アクセルペダル、したがつてエンジン負荷が
所定値以上であることに対する燃料レバー３８の
所定範囲内においてオンとなり、切換え部４０内
の開閉弁は該所定範囲内において開かれる。ヒー
タ３２は給電線４２を介して切換え部４０内のス
イツチへ接続され、燃料噴射弁３０は管路４４、
切換部４０内の開閉弁、及び管路４６を経てフイ
ードポンプ３６へ接続されている。切換え部４０
内のスイツチは、燃料レバー３８に固設されてい
る可動接点と、燃料レバー３８の前記所定範囲に
おいて可動接点に接触する導体板とから構成され
てよく、切換え部４０内の開閉弁はこのスイツチ
により開閉する電磁弁であつてよい。 The drawing shows a direct injection diesel engine,
A direct combustion chamber 12 having a troital longitudinal section is formed in the upper surface of the piston 10, and the piston 10 is slidably disposed within a cylinder block 14. A cylinder head 16 is fixedly attached to the upper part of the cylinder block 14, and a combustion chamber 18 is defined by the piston 10, the cylinder block 14, and the cylinder head 16. The adapter 20 is connected to the intake manifold 2
The intake passage 24 is arranged between the intake manifold 22 and the cylinder head 16.
4 and an intake port 26 of the cylinder head 16, which is connected to the combustion chamber 18. Intake valve 28
is arranged between the intake port 26 and the combustion chamber 18, and opens during the intake stroke. A fuel injection valve 30 is attached to the adapter 20, and the fuel injection valve 3
Adapter 20 that is hit by auxiliary fuel injected from 0
A heater 32 is attached to the wall. The fuel injection pump 34 receives fuel from the feed pump 36 and adjusts the engine speed and the fuel lever 38.
An amount of fuel determined by the above is pumped to a fuel injection nozzle (not shown) in each combustion chamber 18 in synchronization with the rotation of the crankshaft. The fuel lever 38 is linked to the accelerator pedal and operates a switch and an on-off valve in the switching section 40. The switch in the switching section 40, the accelerator pedal, and therefore the fuel lever 38 are turned on within a predetermined range when the engine load is above a predetermined value, and the on-off valve in the switching section 40 is opened within the predetermined range. The heater 32 is connected to a switch in the switching unit 40 via a power supply line 42, and the fuel injection valve 30 is connected to a pipe 44,
It is connected to the feed pump 36 via an on-off valve in the switching section 40 and a pipe 46. Switching section 40
The switch inside may be composed of a movable contact fixed to the fuel lever 38 and a conductive plate that contacts the movable contact in the predetermined range of the fuel lever 38, and the on-off valve inside the switching section 40 is connected to this switch. It may be a solenoid valve that is opened and closed by a solenoid valve.
実施例の作用について説明する。 The operation of the embodiment will be explained.
燃料レバー３８はアクセルペダル、したがつて
エンジン負荷に関係して揺動する。エンジンの高
負荷時では燃料レバー３８が所定範囲内にあるの
で、切換え部４０内のスイツチがオンになるとと
もに、開閉弁が開かれる。この結果、ヒータ３２
が通電状態となるとともに、フイードポンプ３６
から燃料噴射弁３０へ燃料が送られて、燃料噴射
弁３０から吸気通路２４へ補助燃料が噴射され
る。燃料噴射弁３０から噴射された補助燃料が付
着する吸気通路２４の壁面はヒータ３２により加
熱されているので、噴射された補助燃料の気化は
促進される。このように良好な気化された補助燃
料を含む空気が燃焼室１８へ導かれるので、燃焼
噴射ノズルからの燃料噴射時の燃焼性及び着火性
が向上する。 The fuel lever 38 swings in relation to the accelerator pedal and thus to the engine load. When the engine is under high load, the fuel lever 38 is within a predetermined range, so the switch in the switching section 40 is turned on and the on-off valve is opened. As a result, the heater 32
becomes energized, and the feed pump 36
Fuel is sent from the fuel injection valve 30 to the fuel injection valve 30, and auxiliary fuel is injected from the fuel injection valve 30 into the intake passage 24. Since the wall surface of the intake passage 24 to which the auxiliary fuel injected from the fuel injection valve 30 adheres is heated by the heater 32, vaporization of the injected auxiliary fuel is promoted. Since the air containing good vaporized auxiliary fuel is guided to the combustion chamber 18 in this way, the combustibility and ignition performance are improved when fuel is injected from the combustion injection nozzle.
エンジン低負荷時では燃料レバー３８が前記所
定範囲外となるので、切換え部４０内のスイツチ
がオフになるとともに、開閉弁が閉じられる。こ
の結果、ヒータ３２が非通電状態となるととも
に、開閉弁が閉じられて燃料噴射弁３０からの補
助燃料の噴射は中止される。 When the engine is under low load, the fuel lever 38 is out of the predetermined range, so the switch in the switching section 40 is turned off and the on-off valve is closed. As a result, the heater 32 is de-energized, the on-off valve is closed, and injection of auxiliary fuel from the fuel injection valve 30 is stopped.
図面はこの考案の一実施例の構成図である。
２４……吸気通路、３０……燃料噴射弁、３２
……ヒータ、３４……燃料噴射ポンプ、３６……
フイードポンプ、３８……燃料レバー、４０……
切換部（スイツチ、弁）。
The drawing is a block diagram of one embodiment of this invention. 24...Intake passage, 30...Fuel injection valve, 32
...Heater, 34...Fuel injection pump, 36...
Feed pump, 38...Fuel lever, 40...
Switching section (switch, valve).
Claims (1)
と、前記吸気通路に配設され前記燃料噴射弁か
ら噴射された補助燃料を加熱するヒータと、燃
料噴射ポンプに設けられアクセルペダルに連動
する燃料レバーと、この燃料レバーに連動しエ
ンジン負荷が所定値以上にある場合にフイード
ポンプから前記燃料噴射弁ヘ補助燃料を導く弁
と、前記燃料レバーに連動しエンジン負荷が前
記所定値以上にある場合に前記ヒータを通電状
態にするスイツチとを有してなることを特徴と
するデイーゼルエンジンの補助燃料供給装置。 (2) 前記燃料噴射弁と前記ヒータとは吸気マニホ
ールドとシリンダヘツドとの間に配設されるア
ダプタに取付けられていることを特徴とする実
用新案登録請求の範囲第１項記載のデイーゼル
エンジンの補助燃料供給装置。[Claims for Utility Model Registration] (1) A fuel injection valve that injects auxiliary fuel into an intake passage, a heater disposed in the intake passage that heats auxiliary fuel injected from the fuel injection valve, and a fuel injection pump. a fuel lever provided in the fuel lever and linked to the accelerator pedal; a valve linked to the fuel lever to guide auxiliary fuel from the feed pump to the fuel injection valve when the engine load is above a predetermined value; an auxiliary fuel supply device for a diesel engine, comprising: a switch that turns on electricity to the heater when the temperature is greater than or equal to the predetermined value. (2) The diesel engine according to claim 1, wherein the fuel injection valve and the heater are attached to an adapter disposed between an intake manifold and a cylinder head. Auxiliary fuel supply device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6627486U JPH0519564Y2 (en) | 1986-04-30 | 1986-04-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6627486U JPH0519564Y2 (en) | 1986-04-30 | 1986-04-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62176471U JPS62176471U (en) | 1987-11-09 |
| JPH0519564Y2 true JPH0519564Y2 (en) | 1993-05-24 |
Family
ID=30904127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6627486U Expired - Lifetime JPH0519564Y2 (en) | 1986-04-30 | 1986-04-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0519564Y2 (en) |
-
1986
- 1986-04-30 JP JP6627486U patent/JPH0519564Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62176471U (en) | 1987-11-09 |
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