JPS60261975A - Injection valve - Google Patents
Injection valveInfo
- Publication number
- JPS60261975A JPS60261975A JP11950584A JP11950584A JPS60261975A JP S60261975 A JPS60261975 A JP S60261975A JP 11950584 A JP11950584 A JP 11950584A JP 11950584 A JP11950584 A JP 11950584A JP S60261975 A JPS60261975 A JP S60261975A
- Authority
- JP
- Japan
- Prior art keywords
- valve body
- fuel
- nozzle hole
- housing
- injection valve
- 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
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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/162—Means to impart a whirling motion to fuel upstream or near discharging orifices
- F02M61/163—Means being injection-valves with helically or spirally shaped grooves
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
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】
［発明の利用分野］
本発明はディーゼルエンジンの燃料噴射等に用いられ、
燃料を細粒にして間欠的に噴射供給する噴射弁に関する
。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention is used for fuel injection of diesel engines, etc.
This invention relates to an injection valve that intermittently injects fuel into fine particles.
［背景技術］
第５図に示される如〈従来の噴射弁は、筐体１０内に弁
体１２が収容されており、この弁体１２の軸方向移動に
よう・て開放される筐体ｌＯのノズル孔１４から燃料が
噴射されるようになっている。[Background Art] As shown in FIG. 5, in a conventional injection valve, a valve body 12 is housed in a housing 10, and the housing lO is opened as the valve body 12 moves in the axial direction. Fuel is injected from the nozzle hole 14 of the vehicle.
この１１体１２の外周には螺旋溝１６を形成することに
より、燃料の微粒化特性、すなわち粒径分布、表面積分
布、重量分布及びこれらの分布に対するｔｌｊ均粒径の
特性を向上することができる。By forming a spiral groove 16 on the outer periphery of the 11 bodies 12, it is possible to improve the atomization characteristics of the fuel, that is, the characteristics of particle size distribution, surface area distribution, weight distribution, and tlj average particle size with respect to these distributions. .
しかしこのような噴射弁においても、ノズル孔１４が弁
体１２の中心線と同軸的に配置されているため、ノズル
孔１４から噴射される燃料も弁体１２の中心軸線上に配
置されることになる。このため、燃料の噴射方向は一噴
射弁の取付位置及び角度で決定され、たとえば第６図に
示される如く噴射弁Ｖの軸方向がピストン１８に形成さ
れる燃焼室としての四部２０へ向けられている場合には
燃料を効果的に噴射することができるが、設計の都合上
第７図に示される如く空間的な余裕がなく、噴射弁Ｖの
軸方向が凹部２０を向いていない場合には燃焼室を形成
する凹部２０へ効果的な燃料噴射が不可能となる。However, even in such an injection valve, since the nozzle hole 14 is arranged coaxially with the center line of the valve body 12, the fuel injected from the nozzle hole 14 is also arranged on the center axis of the valve body 12. become. For this reason, the direction of fuel injection is determined by the mounting position and angle of one injector, and for example, as shown in FIG. However, due to the design, there is no space available and the axial direction of the injection valve V does not face the recess 20, as shown in FIG. This makes it impossible to effectively inject fuel into the recess 20 forming the combustion chamber.
［発明の目的］
本発明は上記事実を考慮し、エンジンへの取付位置が制
限される場合にも適切に燃焼室へ燃料を噴射することが
できる噴射弁を得ることが目的である。[Object of the Invention] Taking the above-mentioned facts into account, the present invention aims to provide an injection valve that can appropriately inject fuel into a combustion chamber even when the mounting position to an engine is restricted.
［発明の概要］
本発明に係る噴射弁では、弁体外周と筐体との間を通過
する燃料に旋回流を付与する案内手段を弁体に設け、ノ
ズル孔を弁体中心線から所定角度のもとに傾斜して筐体
へ形成するようになっている。このため案内手°段で旋
回流が付与されることによって効果的に微粒化された燃
料は傾斜したノズル孔から噴霧されることになり、噴射
弁の取付位置が制限されて噴射弁の軸方向に燃焼室の中
心部がない場合にも確実に燃焼室に燃料を供給すること
が可能となっている。[Summary of the Invention] In the injection valve according to the present invention, the valve body is provided with a guide means for imparting a swirling flow to the fuel passing between the outer periphery of the valve body and the casing, and the nozzle hole is oriented at a predetermined angle from the center line of the valve body. It is designed to be inclined towards the bottom and formed into the casing. For this reason, the fuel that has been effectively atomized by the swirling flow provided by the guide means is sprayed from the inclined nozzle hole, and the installation position of the injector is restricted and the axial direction of the injector is This makes it possible to reliably supply fuel to the combustion chamber even when there is no central part of the combustion chamber.
本発明の効果的な態様では、弁体外周へ案内手段として
螺旋溝が形成され、これによって微粒化特性を向上する
ようになっている。In an effective embodiment of the present invention, a spiral groove is formed on the outer periphery of the valve body as a guide means, thereby improving the atomization characteristics.
［発明の実施例］
第１図には本発明の第１実施例に係る噴射弁２２が示さ
れている。この噴射弁２２では筐体２４が筒形状に形成
され、その下端部は次第に外径を縮小する縮径部２６と
なっている。[Embodiment of the Invention] FIG. 1 shows an injection valve 22 according to a first embodiment of the invention. In this injection valve 22, a casing 24 is formed into a cylindrical shape, and a lower end portion of the casing 24 is a reduced diameter portion 26 whose outer diameter is gradually reduced.
この筐体２４内へ配置された弁体２８・は円柱形状で筐
体２４と同軸的に配置されており、先端部に形成される
円錐部２８Ａは縮径部２６の内側へ当接可能となってい
る。この当接時には両者が密着して図示しない筐体２４
の上端から送られる燃料を遮断するようになっている。The valve body 28 disposed inside the housing 24 has a cylindrical shape and is arranged coaxially with the housing 24, and the conical portion 28A formed at the tip can come into contact with the inside of the reduced diameter portion 26. It has become. At this time of contact, the two are in close contact with each other, and the housing 24 (not shown)
It is designed to cut off fuel sent from the upper end of the tank.
弁体２８の外周には案内手段としての螺旋溝３ｏが刻設
されて圧送される燃料の通過用となっており、この燃料
へ弁体２８の軸芯を中心とした旋回流を付与できるよう
になっている。A spiral groove 3o is carved on the outer periphery of the valve body 28 as a guide means for passage of the fuel to be pumped, so that a swirling flow centered on the axis of the valve body 28 can be imparted to the fuel. It has become.
円錐部２８Ａの頂部が筐体２４へ密着した場合にも筐体
２４との間に隙間を形成するべく、筐体２４の下端部に
は膨出部３２が形成されてその内 １部に燃料溜り３４
を設けている。In order to form a gap between the top of the conical portion 28A and the casing 24 even when the top of the conical portion 28A is in close contact with the casing 24, a bulge 32 is formed at the lower end of the casing 24, and a part of the bulge 32 is filled with fuel. Tamari 34
has been established.
筐体２４の下端部にはこの燃料溜り３４を外部と連通す
るノズル孔３６が穿設されている。このノズル孔３６は
第１図に示される如く弁体２８が上昇した場合に燃料を
噴射して燃焼室へ送り込む役目を有している。このノズ
ル孔３６の軸線は弁体２８の軸線と角度θのもとに傾斜
されている。A nozzle hole 36 is bored in the lower end of the housing 24 to communicate the fuel reservoir 34 with the outside. This nozzle hole 36 has the role of injecting fuel into the combustion chamber when the valve body 28 is raised as shown in FIG. The axis of the nozzle hole 36 is inclined at an angle θ with the axis of the valve body 28.
このノズル孔３６は筐体２４の先端部に膨出部３２が形
成されていることにより、そのいずれの部分も弁体２８
の中心線を通ることはない、このように構成される本実
施例の噴射弁２２では。This nozzle hole 36 has a bulging part 32 formed at the tip of the housing 24, so that any part of the nozzle hole 36 is connected to the valve body 28.
In the injection valve 22 of this embodiment configured in this way, the center line of
弁体２８が筐体２４と密着している場合には図示しない
燃料供給源から送られる燃料は遮断されており、ノズル
孔３６から噴射されることはない。When the valve body 28 is in close contact with the housing 24, fuel sent from a fuel supply source (not shown) is blocked and is not injected from the nozzle hole 36.
弁体２８が上昇されると、弁体・２８と筐体２４との間
を通った燃料はノズル孔３６から噴射される。When the valve body 28 is raised, the fuel that has passed between the valve body 28 and the housing 24 is injected from the nozzle hole 36.
第２図にはこの噴射弁２２をディーゼルエンジンへ取付
けた場合が示されており、ピストン３８の頂部−に設け
られる凹部４０が主として燃焼室を構成するようになっ
ており、この凹部４０への空気導入は吸気弁４２の開閉
により行われるようになっている。FIG. 2 shows the case where this injection valve 22 is installed in a diesel engine, and a recess 40 provided at the top of the piston 38 mainly constitutes a combustion chamber. Air is introduced by opening and closing the intake valve 42.
ここで噴射弁２２の軸線が凹部４０の中心部を通らず、
ピストン３８の頂面へ向いた取付状態である場合にも、
噴射弁２２のノズル孔３６から噴射される燃料はノズル
孔３６の軸方向と角度θだけ傾斜して噴射されるので、
この燃料を確実に凹部４０内へ供給することができる。Here, the axis of the injection valve 22 does not pass through the center of the recess 40,
Even when the piston 38 is installed facing toward the top surface,
Since the fuel injected from the nozzle hole 36 of the injection valve 22 is inclined at an angle θ with respect to the axial direction of the nozzle hole 36,
This fuel can be reliably supplied into the recess 40.
しかも、この実施例では弁体２８の外周に螺旋溝３０が
゛形成されているので、噴射される燃料はあらかじめ適
切に微粒化されており、燃焼特性を向上することができ
る。Moreover, in this embodiment, since the spiral groove 30 is formed on the outer periphery of the valve body 28, the injected fuel is appropriately atomized in advance, and the combustion characteristics can be improved.
次に第３図には本発明の第２実施例に係る噴射弁４４が
示されている。この噴射弁４４では前記実施例のノズル
孔３６に加えて、弁体２８の反対側にもノズル孔４６が
形成されている。このノズル孔４８はノズル孔３６と同
様に弁体２８の軸芯から所定角度だけ傾斜した方向に穿
設されている。Next, FIG. 3 shows an injection valve 44 according to a second embodiment of the present invention. In this injection valve 44, in addition to the nozzle hole 36 of the previous embodiment, a nozzle hole 46 is also formed on the opposite side of the valve body 28. Like the nozzle hole 36, the nozzle hole 48 is formed in a direction inclined at a predetermined angle from the axis of the valve body 28.
したがってこの実施例の噴射弁４４では弁体２８の軸芯
を中心として反対方向へ燃料を噴射することができ、広
い面積に亘った燃料噴射が可能となっている。Therefore, the injection valve 44 of this embodiment can inject fuel in opposite directions around the axis of the valve body 28, making it possible to inject fuel over a wide area.
第４図はこの噴射弁４４をディーゼルエンジンの燃焼室
に適用した構造が示されており、噴射弁４４はピストン
３８と同軸的に配置され、ピストン３８の頂部に形成さ
れた広幅の凹部４８と対応している。したがってこの実
施例の噴射弁４４はノズル孔３６．４６から広範囲に亘
って燃料を凹部４８内へ噴射することができ、これによ
って燃焼効率を向上することができる。この実施例にお
いても弁体２８の外周には螺旋溝３０が形成されている
ため、燃料があらかじめ微粒化されて噴射されるので、
より適切な燃焼効果を得ることができる。FIG. 4 shows a structure in which this injection valve 44 is applied to a combustion chamber of a diesel engine. Compatible. Therefore, the injection valve 44 of this embodiment can inject fuel into the recess 48 over a wide range from the nozzle holes 36, 46, thereby improving combustion efficiency. In this embodiment as well, since the spiral groove 30 is formed on the outer periphery of the valve body 28, the fuel is atomized beforehand and injected.
A more appropriate combustion effect can be obtained.
なお、上記実施例においては弁体２８の外周に案内手段
として螺旋溝３０が形成された構造を示−したが、本発
明では燃料を螺旋状に案内できる構成であればすべて適
用可能であり、螺旋溝の代わりに弁体２８の外周へ突起
を形成することも可能である。さらに、前記各実施例で
示したノズル孔は１個又は２ （ＩＩに限らず３個以上
形成することも可能であり、これらの場合にもいずれも
軸芯が弁体の軸芯と所定角度傾斜して配置されればよい
。Although the above embodiment shows a structure in which a spiral groove 30 is formed as a guide means on the outer periphery of the valve body 28, the present invention is applicable to any structure as long as it can guide fuel in a spiral shape. It is also possible to form a protrusion on the outer periphery of the valve body 28 instead of the spiral groove. Furthermore, the number of nozzle holes shown in each of the above embodiments is one or two (not limited to II, it is also possible to form three or more holes, and in both cases, the axis is at a predetermined angle with the axis of the valve body. It is sufficient if it is arranged at an angle.
［発明の効果］
以上説明した如く本発明に係る噴射弁では、弁体へ弁体
外周と筐体との間を通過する燃料に旋回流を旧年する案
内手段を設け、燃料噴射口にあるノズル孔を弁体中心線
から所定角度傾斜して筐体へ形成するので、取付位置が
制限されている場合にも適切に配置して燃焼効率向上に
寄与することができる優れた効果を有する。[Effects of the Invention] As explained above, in the injection valve according to the present invention, the valve body is provided with a guide means for creating a swirling flow in the fuel passing between the outer periphery of the valve body and the casing, and the guide means is provided at the fuel injection port. Since the nozzle hole is formed in the housing so as to be inclined at a predetermined angle from the center line of the valve body, it has an excellent effect that even when the mounting position is limited, it can be properly arranged and contribute to improving combustion efficiency.
第１図は本発明に係る噴射弁の第１実施例を示す縦断面
図、第２図は第１実施例を適用したディーゼルエンジン
を示す断面図、第３図は本発明の第２実施例を示す断面
図、第４図は第３図を適用した状態を示すディーゼルエ
ンジンの断面図、奢
第５図は従来の噴射弁を示す断面図、第６，７図は第５
図に示される従来の噴射弁を適用したディーゼルエンジ
ンを示す断面図である。
２２・１１−噴射弁。
２４１１・・筐体、
２８拳・・弁体、
３０・・・螺旋溝、
３６・・Ｏノズル孔、
４４・・・噴射弁、
４６・自・ノズル孔、
代理人 弁理士 中高 淳
第１図 第２図
第３図 第４図
５ｂ ４ｔ）FIG. 1 is a longitudinal sectional view showing a first embodiment of an injection valve according to the present invention, FIG. 2 is a sectional view showing a diesel engine to which the first embodiment is applied, and FIG. 3 is a second embodiment of the present invention. Figure 4 is a cross-sectional view of a diesel engine to which Figure 3 is applied, Figure 5 is a cross-sectional view of a conventional injection valve, and Figures 6 and 7 are
1 is a sectional view showing a diesel engine to which the conventional injection valve shown in the figure is applied. 22.11-Injection valve. 2411...Housing, 28.Valve body, 30...Spiral groove, 36.O nozzle hole, 44...Injection valve, 46.Onozzle hole, Agent: Patent attorney Jun Nakataka Figure 1 Figure 2 Figure 3 Figure 4 Figure 5b 4t)
Claims (2)
され、この弁体の軸方向への移動によって開放されるノ
ズル孔から燃料が噴射される噴射弁であって、前記弁体
には弁体外周と筐体との１１１１を通過する燃料に旋回
流を付与する案内手段を設け、前記ノズル孔は弁体中心
線から所定角度のもとに傾斜して筐体へ形成されること
、を特徴とした噴射弁。(1) An injection valve in which an -it body is disposed inside a casing so as to be movable in the axial direction, and fuel is injected from a nozzle hole opened by the movement of the valve body in the axial direction, the valve body is provided with a guide means for imparting a swirling flow to the fuel passing through the outer periphery of the valve body and the housing, and the nozzle hole is formed in the housing so as to be inclined at a predetermined angle from the center line of the valve body. An injection valve featuring this.
あることを特徴とした前記特許請求の範囲第１項に記載
の噴射弁。(2) The injection valve according to claim 1, wherein the guide means is a spiral groove carved into the outer periphery of the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11950584A JPS60261975A (en) | 1984-06-11 | 1984-06-11 | Injection valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11950584A JPS60261975A (en) | 1984-06-11 | 1984-06-11 | Injection valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60261975A true JPS60261975A (en) | 1985-12-25 |
Family
ID=14762918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11950584A Pending JPS60261975A (en) | 1984-06-11 | 1984-06-11 | Injection valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60261975A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0267069U (en) * | 1988-11-10 | 1990-05-21 | ||
| US4974565A (en) * | 1988-02-26 | 1990-12-04 | Toyota Jidosha Kabushiki Kaisha | Fuel swirl generation type fuel injection valve and direct fuel injection type spark ignition internal combustion engine mounted with the fuel injection valve |
| US5058549A (en) * | 1988-02-26 | 1991-10-22 | Toyota Jidosha Kabushiki Kaisha | Fuel swirl generation type fuel injection valve and direct fuel injection type spark ignition internal combustion engine |
| DE19518950B4 (en) * | 1994-05-23 | 2007-03-29 | Nissan Motor Co., Ltd., Yokohama | fuel Injector |
| WO2014119473A1 (en) * | 2013-02-04 | 2014-08-07 | 日立オートモティブシステムズ株式会社 | Fuel injection valve |
| CN112282999A (en) * | 2020-10-30 | 2021-01-29 | 安徽江淮汽车集团股份有限公司 | Can reduce sprayer structure of sound of taking a seat |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3117665A (en) * | 1961-08-28 | 1964-01-14 | Barry Wehmiller Mach Co | Article combiner for conveyors |
| GB2097471A (en) * | 1981-04-23 | 1982-11-03 | Lucas Ind Plc | I.C. engine fuel injection nozzle |
| JPS591877B2 (en) * | 1978-03-09 | 1984-01-14 | 不二サッシ株式会社 | door tightening device |
-
1984
- 1984-06-11 JP JP11950584A patent/JPS60261975A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3117665A (en) * | 1961-08-28 | 1964-01-14 | Barry Wehmiller Mach Co | Article combiner for conveyors |
| JPS591877B2 (en) * | 1978-03-09 | 1984-01-14 | 不二サッシ株式会社 | door tightening device |
| GB2097471A (en) * | 1981-04-23 | 1982-11-03 | Lucas Ind Plc | I.C. engine fuel injection nozzle |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4974565A (en) * | 1988-02-26 | 1990-12-04 | Toyota Jidosha Kabushiki Kaisha | Fuel swirl generation type fuel injection valve and direct fuel injection type spark ignition internal combustion engine mounted with the fuel injection valve |
| US5058549A (en) * | 1988-02-26 | 1991-10-22 | Toyota Jidosha Kabushiki Kaisha | Fuel swirl generation type fuel injection valve and direct fuel injection type spark ignition internal combustion engine |
| JPH0267069U (en) * | 1988-11-10 | 1990-05-21 | ||
| JP2527655Y2 (en) * | 1988-11-10 | 1997-03-05 | トヨタ自動車株式会社 | Swirl multi-hole fuel injection nozzle |
| DE19518950B4 (en) * | 1994-05-23 | 2007-03-29 | Nissan Motor Co., Ltd., Yokohama | fuel Injector |
| WO2014119473A1 (en) * | 2013-02-04 | 2014-08-07 | 日立オートモティブシステムズ株式会社 | Fuel injection valve |
| JP2014148956A (en) * | 2013-02-04 | 2014-08-21 | Hitachi Automotive Systems Ltd | Fuel injection valve |
| US9534573B2 (en) | 2013-02-04 | 2017-01-03 | Hitachi Automotive Systems, Ltd. | Fuel injection valve |
| CN112282999A (en) * | 2020-10-30 | 2021-01-29 | 安徽江淮汽车集团股份有限公司 | Can reduce sprayer structure of sound of taking a seat |
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