JPS60159367A - Fuel injection valve - Google Patents
Fuel injection valveInfo
- Publication number
- JPS60159367A JPS60159367A JP1447184A JP1447184A JPS60159367A JP S60159367 A JPS60159367 A JP S60159367A JP 1447184 A JP1447184 A JP 1447184A JP 1447184 A JP1447184 A JP 1447184A JP S60159367 A JPS60159367 A JP S60159367A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- air
- fuel injection
- valve
- reservoir
- 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.)
- Granted
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 53
- 238000002347 injection Methods 0.000 title claims abstract description 46
- 239000007924 injection Substances 0.000 title claims abstract description 46
- 239000000295 fuel oil Substances 0.000 claims abstract description 16
- 238000002485 combustion reaction Methods 0.000 abstract description 11
- 238000010276 construction Methods 0.000 abstract 1
- 239000010419 fine particle Substances 0.000 abstract 1
- 230000001737 promoting effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000000889 atomisation Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000779 smoke Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M67/00—Apparatus in which fuel-injection is effected by means of high-pressure gas, the gas carrying the fuel into working cylinders of the engine, e.g. air-injection type
- F02M67/10—Injectors peculiar thereto, e.g. valve less type
- F02M67/12—Injectors peculiar thereto, e.g. valve less type having valves
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
【発明の詳細な説明】 本発明はディーゼルエンジン用燃料噴射弁に関する。[Detailed description of the invention] The present invention relates to a fuel injection valve for a diesel engine.
第１図に従来のディーゼルエンジンの燃料システムの例
を示す。FIG. 1 shows an example of a conventional diesel engine fuel system.
図において１１はカム、１２はローン、１３は燃料噴射
ポンプ、１４は噴射管、１６は燃料噴射弁、３１は燃焼
室、３２はピストンである。In the figure, 11 is a cam, 12 is a loan, 13 is a fuel injection pump, 14 is an injection pipe, 16 is a fuel injection valve, 31 is a combustion chamber, and 32 is a piston.
カム１１によってローラ１２を介して駆動されるグラン
シャ（図示せず）を内蔵する噴射ポンプ１３によって燃
料油を圧送し、噴射管１４を通じて燃料弁１６によって
燃料を燃焼室３１内に噴射し、圧縮着火燃焼させるのが
通常の直接噴射式ディーゼルエンジンの燃料噴射装置で
ある。Fuel oil is force-fed by an injection pump 13 having a built-in gransha (not shown) driven by a cam 11 via a roller 12, and the fuel is injected into a combustion chamber 31 through an injection pipe 14 by a fuel valve 16 for compression ignition. The combustion is carried out by the fuel injection device of a normal direct injection diesel engine.
この形式のエンジンでは燃料を高圧で噴射することによ
って微粒化し、さらに燃焼室内を貫通させて、高温高圧
に圧縮された空気と混合させて着火燃焼させることで良
好な熱効率を達成するようになっている。しかし、この
形式では燃料自身の高速噴流と圧縮空気とのせん断によ
って微粒化されるが、形成された噴霧流は中心が過濃混
合気で、外側は希薄混合気となる。このため燃焼が不十
分となり、煙の発生が多い。This type of engine achieves good thermal efficiency by atomizing fuel by injecting it at high pressure, passing it through the combustion chamber, mixing it with high-temperature, high-pressure compressed air, and igniting it. There is. However, in this type, the fuel is atomized by shearing between the high-speed jet of the fuel itself and the compressed air, but the resulting spray stream has a rich mixture at the center and a lean mixture at the outside. As a result, combustion is insufficient and a lot of smoke is generated.
本発明の目的は、前記問題点を解消し、ディーゼルエン
ジンにおける燃焼の改善を行ない、煙の低減を実現でき
る燃料噴射弁を提供するにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a fuel injection valve that can solve the above-mentioned problems, improve combustion in a diesel engine, and reduce smoke.
本発明に係る燃料噴射弁は、噴射弁から噴出した燃料油
に高圧の空気または水蒸気を混ぜ合せることによシ、燃
料油の微粒化を促進し、前記目的を達成するよう構成し
たものである。The fuel injection valve according to the present invention is configured to promote atomization of fuel oil by mixing high-pressure air or water vapor with the fuel oil ejected from the injection valve, thereby achieving the above object. .
以下第２〜３図を参照して、本発明の燃料噴射弁の一実
施例について説明する。An embodiment of the fuel injection valve of the present invention will be described below with reference to FIGS. 2 and 3.
第２図は本発明による一実施例の概要を示す説明図、第
３図は実施例の燃料噴射弁を示す断面図である。FIG. 2 is an explanatory diagram showing an outline of an embodiment according to the present invention, and FIG. 3 is a sectional view showing a fuel injection valve of the embodiment.
第２〜３図において、１５は燃料噴射弁で、噴射管１４
と連通した燃料油通路１５３の先端に燃料噴孔１５１を
備え、燃料弁ばね１５４で付勢された燃料弁ニードル１
５２が上記燃料噴孔１５１への燃料油路を閉止している
。燃料弁ニードル１５２は噴射管１４の圧油によって開
孔される。In Figures 2 and 3, 15 is a fuel injection valve, and injection pipe 14
The fuel valve needle 1 is equipped with a fuel injection hole 151 at the tip of a fuel oil passage 153 communicating with the fuel valve needle 1 and is biased by a fuel valve spring 154.
52 closes the fuel oil passage to the fuel injection hole 151. The fuel valve needle 152 is opened by pressure oil from the injection pipe 14 .
燃料噴孔１５１をとり囲んで外部に空気または蒸気の溜
シ１５６が設けられている。同宿ｐ１５６を形成してい
る外筒１５７には燃料噴孔１５１の噴射軸線上の噴餠と
その延長線上で合致するように、噴孔２４２が開孔され
ている。An air or steam reservoir 156 is provided outside surrounding the fuel injection hole 151. A nozzle hole 242 is opened in the outer cylinder 157 forming the same inlet p156 so as to coincide with the nozzle on the nozzle axis of the fuel nozzle hole 151 on an extension line thereof.
溜り１５６は、空気まだは蒸気通路２４１を介して連通
管２５と連通しておシ、その中間には管制弁２４が設け
られている。この管制弁２４は燃料油ニードル１５２の
リフトタイミングと対応して、制御開弁がされるように
なっている。The reservoir 156 communicates with the communication pipe 25 via the air and steam passage 241, and a control valve 24 is provided in the middle thereof. The control valve 24 is opened under control in accordance with the lift timing of the fuel oil needle 152.
第２図の２１は高圧ポンプ、２’２．２３はヒータで高
圧ポンｆ２１から送られた空気又は水は、ヒータ２２
、２３で加熱され高温高圧の空気または蒸気となり、連
通管２５に導入される。In Fig. 2, 21 is a high pressure pump, 2'2.23 is a heater, and the air or water sent from the high pressure pump f21 is sent to the heater 22.
, 23 to become high-temperature, high-pressure air or steam, which is introduced into the communication pipe 25.
その他は第１図に示す従来例と同様で、同一部分には同
一符号がつけられている。The rest is the same as the conventional example shown in FIG. 1, and the same parts are given the same reference numerals.
次に前記実施例の作用について説明する。Next, the operation of the above embodiment will be explained.
第３図は燃料油と空気または蒸気を噴射する燃料噴射弁
で、燃料システムと空気または蒸気システムとの２系統
よシ溝成されている。噴射管１４から燃料油路１５３を
通じて燃料噴孔１５１に至る高圧の燃料は、ニードル１
５２によって自動的に管制される。FIG. 3 shows a fuel injection valve that injects fuel oil and air or steam, and is configured with two systems: a fuel system and an air or steam system. High-pressure fuel reaches the fuel injection hole 151 from the injection pipe 14 through the fuel oil passage 153 through the needle 1.
52 will be automatically controlled.
一方、高圧ボン７°２１で加圧された空気まだは水はヒ
ータ２２，２３によって加熱され、管制弁２４を通って
噴射弁１５に入り、溜り１５６に達する。これとほぼ同
時に高圧燃料は燃料ｍｆｉ１５３に達している。従って
ほぼ同時に、燃料は燃料弁噴出孔１５１から噴射され、
空気または蒸気は噴出孔２４２から噴射されその延長線
上で合体する。On the other hand, the air and water pressurized by the high-pressure bomb 7° 21 are heated by the heaters 22 and 23, enter the injection valve 15 through the control valve 24, and reach the reservoir 156. At almost the same time, the high pressure fuel reaches fuel mfi153. Therefore, almost simultaneously, fuel is injected from the fuel valve injection hole 151,
Air or steam is injected from the ejection hole 242 and coalesces on its extension line.
この結果、燃料は空気または蒸気の熱を受けるとともに
、高速流によって微粒化が促進される。As a result, the fuel receives heat from the air or steam, and the high-speed flow promotes atomization.
さらに合体して、噴出エネルギを増加させることによシ
貫微力も増加し、燃焼室内の空気との混合が良好となる
。Furthermore, by coalescing and increasing the ejection energy, the penetrating force also increases, and mixing with the air in the combustion chamber becomes better.
前述のとおり、本発明の燃料噴射弁は、噴射弁から噴出
した燃料油に向って高圧の空気または水蒸気を同時に噴
出させるようにしたので、燃料の微粒化が促進され、混
合気の形成が良好となシ、燃焼が改善される効果が大き
い。As mentioned above, the fuel injection valve of the present invention simultaneously injects high-pressure air or water vapor toward the fuel oil ejected from the injection valve, which promotes atomization of the fuel and improves the formation of the air-fuel mixture. It has a great effect on improving combustion.
第１図は従来のディーゼルエンジンの燃焼システム図、
第２図は本発明の同燃焼システム図、第３図は本発明に
係る燃料噴射弁の詳細説明図である。
１３・・燃料噴射ポンプ、１４・・・噴射管、１５１・
・・燃料油の噴出孔、１５６・・・空気または蒸気の溜
り、１５７・・・燃料噴射弁の外筒、２４２・・・空気
または蒸気の噴出孔。
第１図
第２図
２
第３図Figure 1 is a diagram of the combustion system of a conventional diesel engine.
FIG. 2 is a diagram of the combustion system according to the present invention, and FIG. 3 is a detailed explanatory diagram of the fuel injection valve according to the present invention. 13... Fuel injection pump, 14... Injection pipe, 151...
... Fuel oil ejection hole, 156 ... Air or steam pool, 157 ... Outer cylinder of fuel injection valve, 242 ... Air or steam ejection hole. Figure 1 Figure 2 Figure 2 Figure 3
Claims (1)
れる高圧燃料油をエンジンのシリンダ内に噴射する燃料
噴孔合宿する燃料噴射弁において、前記燃料噴射弁の外
筒を包囲して形成され空気または蒸気の圧力によシ自動
的に噴出せしめる空気または蒸気の溜りを具えたことを
特徴とする燃料噴射弁。 ２）前記噴射弁で燃料油の噴出孔の中心線の延長線と空
気または蒸気の噴出孔の中心線の延長線[Scope of Claims] 1) A fuel injection valve with a fuel injection hole that injects high-pressure fuel oil that is intermittently pumped through a fuel injection pump and an injection pipe into a cylinder of an engine; 1. A fuel injection valve comprising a reservoir of air or steam that is formed surrounding an outer cylinder and that is automatically injected by the pressure of the air or steam. 2) An extension line of the center line of the fuel oil nozzle hole and an extension line of the center line of the air or steam nozzle hole in the injection valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1447184A JPS60159367A (en) | 1984-01-31 | 1984-01-31 | Fuel injection valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1447184A JPS60159367A (en) | 1984-01-31 | 1984-01-31 | Fuel injection valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60159367A true JPS60159367A (en) | 1985-08-20 |
| JPH0530986B2 JPH0530986B2 (en) | 1993-05-11 |
Family
ID=11861968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1447184A Granted JPS60159367A (en) | 1984-01-31 | 1984-01-31 | Fuel injection valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60159367A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1989004921A1 (en) * | 1987-11-19 | 1989-06-01 | Brunswick Corporation | Fuel injector |
| JPH027358U (en) * | 1988-06-29 | 1990-01-18 | ||
| WO2011155670A1 (en) * | 2010-06-07 | 2011-12-15 | 현대중공업 주식회사 | Dual fuel injection valve apparatus including a hybrid nozzle for diesel and gas engines |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5697567U (en) * | 1979-12-25 | 1981-08-01 | ||
| JPS56124266U (en) * | 1980-02-22 | 1981-09-21 | ||
| JPS5848748A (en) * | 1981-09-17 | 1983-03-22 | Toyota Motor Corp | Method of controlling air-fuel ratio of internal- combustion engine |
-
1984
- 1984-01-31 JP JP1447184A patent/JPS60159367A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5697567U (en) * | 1979-12-25 | 1981-08-01 | ||
| JPS56124266U (en) * | 1980-02-22 | 1981-09-21 | ||
| JPS5848748A (en) * | 1981-09-17 | 1983-03-22 | Toyota Motor Corp | Method of controlling air-fuel ratio of internal- combustion engine |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1989004921A1 (en) * | 1987-11-19 | 1989-06-01 | Brunswick Corporation | Fuel injector |
| JPH027358U (en) * | 1988-06-29 | 1990-01-18 | ||
| WO2011155670A1 (en) * | 2010-06-07 | 2011-12-15 | 현대중공업 주식회사 | Dual fuel injection valve apparatus including a hybrid nozzle for diesel and gas engines |
| JP2013526669A (en) * | 2010-06-07 | 2013-06-24 | ヒュンダイ ヘビー インダストリーズ カンパニー リミテッド | Dual fuel injection valve device with hybrid nozzle for diesel and gas engines |
| US9255557B2 (en) | 2010-06-07 | 2016-02-09 | Hyundai Heavy Industries, Co., Ltd. | Dual fuel injection valve apparatus including a hybrid nozzle for diesel and gas engines |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0530986B2 (en) | 1993-05-11 |
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