JPS62251464A - Fuel injection device for internal combustion engine - Google Patents
Fuel injection device for internal combustion engineInfo
- Publication number
- JPS62251464A JPS62251464A JP9334786A JP9334786A JPS62251464A JP S62251464 A JPS62251464 A JP S62251464A JP 9334786 A JP9334786 A JP 9334786A JP 9334786 A JP9334786 A JP 9334786A JP S62251464 A JPS62251464 A JP S62251464A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- intake valve
- fuel injection
- combustion chamber
- intake
- 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.)
- Pending
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 49
- 238000002347 injection Methods 0.000 title claims abstract description 24
- 239000007924 injection Substances 0.000 title claims abstract description 24
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 23
- 239000000779 smoke Substances 0.000 abstract description 4
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、内燃機関の燃料噴射装置に関するものである
。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a fuel injection device for an internal combustion engine.
〈従来の技術〉
ディーゼル機関は、ピストン頂面の燃焼室に燃料を燃料
噴射ノズルｌζよって噴射している。<Prior Art> A diesel engine injects fuel into a combustion chamber on the top surface of a piston using a fuel injection nozzle lζ.
〈発明が解決しようとする問題点〉
上記従来の燃料噴射におけるヒューミゲションは、ＨＣ
の増加となり、煙発生、燃費、騒音等の低減の方策には
なり得ないという問題がある。<Problems to be solved by the invention> The humigation in the conventional fuel injection described above is
There is a problem in that it cannot be used as a measure to reduce smoke generation, fuel consumption, noise, etc.
く問題点を解決するための手段〉
、本発明は、上記従来の問題点を解決したものであり、
その構成は、主燃料噴射ノズルを備えた内燃機関Ｃζお
いて、吸気ポート内側の吸気弁座近傍に、ピストン頂面
の燃焼室内に向けて吸気弁の開弁中のみ燃料の一部を噴
射する副燃料噴射管を設けたものである。Means for Solving the Problems> The present invention solves the above conventional problems,
Its structure is that in an internal combustion engine Cζ equipped with a main fuel injection nozzle, a portion of the fuel is injected into the combustion chamber on the top surface of the piston near the intake valve seat inside the intake port only when the intake valve is open. It is equipped with an auxiliary fuel injection pipe.
く作 用〉
本発明は、吸気行程時に吸気ポート内より副燃料噴射管
から燃料の一部を燃焼室内（こ噴射させ、その後主燃料
噴射ノズルｌこより燃料を噴射燃焼させるものである。Function> The present invention injects a portion of fuel into the combustion chamber from the auxiliary fuel injection pipe from within the intake port during the intake stroke, and then injects and burns the fuel from the main fuel injection nozzle.
〈実施例〉
以下本発明の実施例を図面に基づいて説明する。１は機
関のシリンダ、２はピストンである。<Example> Hereinafter, an example of the present invention will be described based on the drawings. 1 is a cylinder of the engine, and 2 is a piston.
このピストン２の頂面ｌこはリエントラント型の燃焼室
３が設けられている。４は吸気ボート、５は吸気弁であ
り、吸気ボート４の開口部の弁座６＃こ吸気弁傘部７が
着座して吸気ボート４は閉止される。８は吸気ボート壁
である。尚、図示省略しているが、通常の燃料噴射ノズ
ルを備えている。これを以下主燃料噴射ノズルと称する
。A reentrant combustion chamber 3 is provided on the top surface of the piston 2. Reference numeral 4 indicates an intake boat, and 5 indicates an intake valve.The intake valve umbrella portion 7 is seated on a valve seat 6# at the opening of the intake boat 4, and the intake boat 4 is closed. 8 is the intake boat wall. Although not shown, a normal fuel injection nozzle is provided. This is hereinafter referred to as the main fuel injection nozzle.
本発明は、前記吸気ボート４内側の吸気弁座６の近傍で
、吸気弁傘部７及びボート壁８を避けた位置に噴口１０
を位置させ、かつ燃焼室３に向けて吸気弁５の開弁中の
み燃料の一部を噴射する副燃料噴射管９を設けたもので
ある。The present invention provides a jet nozzle 10 located near the intake valve seat 6 inside the intake boat 4 and away from the intake valve umbrella 7 and the boat wall 8.
, and is provided with an auxiliary fuel injection pipe 9 that injects a portion of the fuel toward the combustion chamber 3 only when the intake valve 5 is open.
本発明は上記の通りの構成である力）ら、吸気行程初期
の吸気弁５の開弁中に、高温となっている燃焼室３内へ
副燃料噴射管９より燃料を噴射させ、その後主燃料噴射
ノズルより燃料を噴射して燃焼させるものである。これ
ｔこより、副燃料噴射管９から噴射される燃料は効率的
に燃焼室３内に入り、吸気弁傘部７やポート壁８に燃料
が付着されず、未燃焼を回避し、主燃料と共ｌζ完成燃
焼を促進するのである。The present invention is configured as described above, and while the intake valve 5 is open at the beginning of the intake stroke, fuel is injected into the combustion chamber 3 which is at a high temperature from the auxiliary fuel injection pipe 9, and then the main Fuel is injected from a fuel injection nozzle and combusted. As a result, the fuel injected from the auxiliary fuel injection pipe 9 efficiently enters the combustion chamber 3, prevents the fuel from adhering to the intake valve head 7 and the port wall 8, avoids unburned fuel, and mixes the fuel with the main fuel. This promotes complete combustion.
〈発明の効果〉
以上のように本発明によるさ、吸気ボート内ｌこ挿入さ
れた副燃料噴射管により吸気行程の吸気弁の開弁中に燃
料の一部を吸気弁傘部やポート壁を避けてピストン頂面
の燃焼室内に噴射させるヒューミケンション構成である
から、燃焼室内へ燃料が効率的に入るため、ＨＣの増加
がなくなり、煙、燃費並びに騒音低減が得られる効果を
有している。<Effects of the Invention> As described above, according to the present invention, a part of the fuel is injected into the intake valve head or the port wall during the opening of the intake valve during the intake stroke by the auxiliary fuel injection pipe inserted into the intake boat. Since the fumiction structure injects the fuel into the combustion chamber on the top surface of the piston, the fuel enters the combustion chamber efficiently, eliminating the increase in HC and having the effect of reducing smoke, fuel consumption, and noise. There is.
図面は本発明の要部断面図である。
１・・・シリンダ、２・・−ピストン、３・・・燃焼室
％ ４・−・吸気ポート、５・・拳、吸気弁、６・・・
吸気弁座％９拳・・副燃料噴射管。The drawing is a sectional view of a main part of the present invention. 1...Cylinder, 2...-Piston, 3...Combustion chamber% 4...Intake port, 5...Fist, intake valve, 6...
Intake valve seat %9 fist...Auxiliary fuel injection pipe.
Claims (2)
気ポート内側の吸気弁座近傍に、ピストン頂面の燃焼室
内に向けて吸気弁の開弁中のみ燃料の一部を噴射する副
燃料噴射管を設けたことを特徴とする内燃機関の燃料噴
射装置。(1) In an internal combustion engine equipped with a main fuel injection nozzle, auxiliary fuel injection injects a portion of the fuel into the combustion chamber on the top surface of the piston near the intake valve seat inside the intake port only when the intake valve is open. A fuel injection device for an internal combustion engine, characterized by being provided with a tube.
ある特許請求の範囲第１項記載の内燃機関の燃料噴射装
置。(2) The fuel injection device for an internal combustion engine according to claim 1, wherein the combustion chamber on the top surface of the piston is of a reentrant type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9334786A JPS62251464A (en) | 1986-04-24 | 1986-04-24 | Fuel injection device for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9334786A JPS62251464A (en) | 1986-04-24 | 1986-04-24 | Fuel injection device for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62251464A true JPS62251464A (en) | 1987-11-02 |
Family
ID=14079736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9334786A Pending JPS62251464A (en) | 1986-04-24 | 1986-04-24 | Fuel injection device for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62251464A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014222041A (en) * | 2013-05-14 | 2014-11-27 | 日産自動車株式会社 | Direct injection diesel engine |
-
1986
- 1986-04-24 JP JP9334786A patent/JPS62251464A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014222041A (en) * | 2013-05-14 | 2014-11-27 | 日産自動車株式会社 | Direct injection diesel engine |
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