JP2001082296A - Control valve for fuel injection valve - Google Patents
Control valve for fuel injection valveInfo
- Publication number
- JP2001082296A JP2001082296A JP2000255975A JP2000255975A JP2001082296A JP 2001082296 A JP2001082296 A JP 2001082296A JP 2000255975 A JP2000255975 A JP 2000255975A JP 2000255975 A JP2000255975 A JP 2000255975A JP 2001082296 A JP2001082296 A JP 2001082296A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- control
- pressure chamber
- throttle
- throttle member
- 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
- F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
- F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
- F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
-
- 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
- F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
- F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
- F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
- F02M45/08—Injectors peculiar thereto
-
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/0033—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat
- F02M63/0035—Poppet valves, i.e. having a mushroom-shaped valve member that moves perpendicularly to the plane of the valve seat
-
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/0056—Throttling valves, e.g. having variable opening positions throttling the flow
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/28—Details of throttles in fuel-injection apparatus
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、燃料噴射弁のため
の制御弁であって、制御室内で調節可能な弁ニードル及
び制御圧力室を備えており、制御圧力室が流入路及び流
出路を有している形式のものに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control valve for a fuel injection valve, comprising a valve needle and a control pressure chamber which can be adjusted in a control chamber, wherein the control pressure chamber has an inlet passage and an outlet passage. It relates to the type that it has.
【０００２】[0002]
【従来の技術】前記形式の制御弁は例えばドイツ連邦共
和国特許出願公開第１９７２７８９６Ａ１号公報により
公知であって、噴射弁のノズルニードルを開放操作し
て、燃料を内燃機関のシリンダ内に噴射させるために用
いられている。2. Description of the Related Art A control valve of this type is known, for example, from DE-A-197 27 896 A1, for opening a nozzle needle of an injection valve to inject fuel into a cylinder of an internal combustion engine. It is used for
【０００３】ニードルノズルは常に開放圧力で負荷てお
り、開放圧力はノズルニードルを所属の弁座から離すよ
うに作用する。開放圧力（開放力）に抗して、閉鎖力が
作用するようになっており、閉鎖力は制御圧力室内に形
成される。制御圧力室内の圧力が高いレベルに維持され
ている間、そこに形成された閉鎖力は、ノズルニードル
に作用する開放力よりも大きくなっており、その結果、
ノズルニードルは閉じられたままである。これに対し
て、制御圧力室内の圧力、ひいてはそこに形成された閉
鎖力が低下すると、開放力がノズルニードルを弁座から
引き離すようになる。これによって燃料が噴射される。[0003] The needle nozzle is always loaded with an opening pressure, which acts to move the nozzle needle away from the associated valve seat. A closing force acts against the opening pressure (opening force), and the closing force is formed in the control pressure chamber. While the pressure in the control pressure chamber is maintained at a high level, the closing force formed thereon is greater than the opening force acting on the nozzle needle, and as a result,
The nozzle needle remains closed. On the other hand, when the pressure in the control pressure chamber, and thus the closing force formed therein, decreases, the opening force causes the nozzle needle to separate from the valve seat. As a result, fuel is injected.
【０００４】制御圧力室内の圧力が制御弁によって制御
されて、流出路が閉じられ、若しくは開かれる。流出路
の閉鎖によって、制御圧力室内に供給された媒体、通常
は燃料がせき止められ（蓄積され）ると、制御圧力室内
の圧力が上昇して、ノズルニードルを閉じた状態に維持
する。これとは逆に、制御弁が流出路を開くと、制御圧
力室内の圧力が降下して、その結果、ノズルニードルが
開かれる。[0004] The pressure in the control pressure chamber is controlled by a control valve to close or open the outflow passage. When the medium, usually fuel, supplied into the control pressure chamber is blocked (accumulated) by closing the outflow passage, the pressure in the control pressure chamber increases and keeps the nozzle needle closed. Conversely, when the control valve opens the outflow channel, the pressure in the control pressure chamber drops, resulting in the nozzle needle opening.
【０００５】[0005]
【発明が解決しようとする課題】制御圧力室内の、前噴
射にとって望ましい低速な圧力降下と、制御圧力室内
の、主噴射にとって望ましい急速な圧力降下とが可能で
あるようにしたい。It is desired that a slow pressure drop in the control pressure chamber desired for pre-injection and a rapid pressure drop desired in the control pressure chamber for main injection be possible.
【０００６】[0006]
【課題を解決するための手段】前記課題を解決するため
に本発明の構成では、制御圧力室内に絞り部材のための
弁座が形成されており、絞り部材が絞り孔を備えてい
て、ばね部材によって弁座に向けて負荷されており、閉
鎖部材（閉鎖手段）を設けてあり、閉鎖部材が、絞り部
材を弁座から離す際に、流入路を少なくとも部分的に閉
鎖するようになっている。According to the present invention, a valve seat for a throttle member is formed in a control pressure chamber, and the throttle member has a throttle hole. A closing member (closing means) provided by the member toward the valve seat, wherein the closing member at least partially closes the inflow passage when the throttle member is moved away from the valve seat. I have.
【０００７】[0007]
【発明の効果】本発明に基づく前記構成によって利点と
して、ノズルニードルの開閉時の高い速度が得られる。
このことは、絞り部材を弁座から離すことによって流出
路の横断面を大きくして、制御圧力室内の急速な圧力降
下、ひいては高いニードル速度を生ぜしめることに基づ
いている。流出路の横断面の増大と同時に制御圧力室内
への流入路の横断面を減少させる、即ち流入路を部分的
に若しくは完全に閉じることによって、制御圧力室内の
圧力降下が助成される。さらなる利点として、前噴射と
主噴射とが互いに正確に設定され、それというのは前噴
射にとって重要（決定的）な流出路横断面、即ち絞り孔
の直径が、主噴射にとって重要な流出路横断面、即ち弁
座の直径に左右されずに規定されるからである。さらに
利点として、製造の際の傷物の数が減少せしめられてお
り、それというのは流出路のための絞り部材が、流入路
内に配置される絞り部材に左右されずに製造できるから
である。さらに、両方の絞りが実験により良好に規定で
き、それというのは分離された２つの構成部分によって
形成されているからである。The arrangement according to the invention has the advantage that a high speed of opening and closing the nozzle needle is obtained.
This is based on increasing the cross section of the outlet channel by moving the throttle member away from the valve seat, resulting in a rapid pressure drop in the control pressure chamber and thus a high needle speed. By reducing the cross-section of the inflow channel into the control pressure chamber at the same time as increasing the cross-section of the outflow channel, ie, partially or completely closing the inflow channel, a pressure drop in the control pressure chamber is assisted. As a further advantage, the pre-injection and the main injection are set precisely to one another, since the outflow path cross-section that is important (critical) for the pre-injection, ie the diameter of the throttle hole, is important for the main injection. This is because it is defined without being influenced by the surface, that is, the diameter of the valve seat. As a further advantage, the number of flaws in the production is reduced, since the throttle element for the outlet channel can be manufactured independently of the throttle member arranged in the inlet channel. Furthermore, both diaphragms can be well defined by experiment, since they are formed by two separate components.
【０００８】本発明の有利な実施態様では、閉鎖部材が
絞り部材の制御縁部によって形成されている。これによ
って、付加的な部材を介在させることなしに、流入路横
断面の閉鎖が、絞り部材を弁座から離す場合に行われ
る。In a preferred embodiment of the invention, the closing member is formed by a control edge of the throttle member. As a result, the closing of the inflow channel cross-section takes place without additional components when the throttle member is moved away from the valve seat.
【０００９】別の実施態様では、閉鎖部材が球形弁体に
よって形成されており、絞り部材が傾斜面を備えてお
り、傾斜面が球形弁体と協働する、即ち球形弁体を作動
するようになっている。該実施態様の利点として、球体
弁体の切換作動が所望の形式で傾斜面の傾斜角によって
設定される。In another embodiment, the closing member is formed by a spherical valve body, and the throttle member has an inclined surface, and the inclined surface cooperates with the spherical valve member, that is, activates the spherical valve member. It has become. The advantage of this embodiment is that the switching action of the spherical valve element is set in a desired manner by the angle of inclination of the inclined surface.
【００１０】[0010]
【発明の実施の形態】図１には制御弁（図２、参照）を
備えた従来の燃料噴射弁が示してある。燃料噴射弁の弁
本体１０内にノズルニードル１２が移動可能に配置され
ている。ノズルニードル１２は内燃機関（図示せず）の
シリンダ内への燃料の噴射を制御する。供給された燃料
がノズルニードル１２に開放力を生ぜしめ、該開放力が
ノズルニードル並びに該ノズルニードルに接触する操作
部材１４を制御圧力室１６に向けて移動させようとす
る。FIG. 1 shows a conventional fuel injection valve provided with a control valve (see FIG. 2). A nozzle needle 12 is movably disposed in a valve body 10 of the fuel injection valve. The nozzle needle 12 controls injection of fuel into a cylinder of an internal combustion engine (not shown). The supplied fuel generates an opening force on the nozzle needle 12, and the opening force attempts to move the nozzle needle and the operating member 14 in contact with the nozzle needle toward the control pressure chamber 16.
【００１１】制御圧力室１６にも燃料を供給するように
なっており、該燃料は制御圧力室１６内に作用する圧力
に基づき閉鎖力を操作部材１４に生ぜしめる。燃料は流
入路１８を介して送られ、制御圧力室１６に流出路２０
を接続してあり、流出路が制御弁２４の制御室２２に通
じている。流出路２０は制御弁２４に対して流入路を成
しており、流出路２６が設けられており、該流出路を通
して燃料が制御圧力室１６及び制御室２２から流出す
る。The control pressure chamber 16 is also supplied with fuel, and the fuel generates a closing force on the operating member 14 based on the pressure acting in the control pressure chamber 16. The fuel is sent through the inflow passage 18 and flows into the control pressure chamber 16 through the outflow passage 20.
Are connected, and the outflow path leads to the control chamber 22 of the control valve 24. The outflow passage 20 forms an inflow passage for the control valve 24, and is provided with an outflow passage 26, through which fuel flows out of the control pressure chamber 16 and the control chamber 22.
【００１２】制御弁２４は制御室２２内に弁ニードル(V
entilnadel)２８を有しており、弁ニードルが弁座３０
と協働するようになっている。弁ニードル２８が弁座３
０に接触している場合には、制御弁２４が閉じられてお
り、その結果、流入路１８を介して制御圧力室１６内に
供給された燃料が制御圧力室内にせき止められる。これ
によって生ぜしめられた高い圧力が、操作部材１４に閉
鎖力を生ぜしめ、該閉鎖力はノズルニードル１２に作用
する開放力よりも大きい。従って、燃料噴射弁は閉じら
れている。逆に、弁ニードル２８が弁座３０から持ち上
げられ（離され）ると、燃料が制御圧力室１６から制御
室２２及び流出路２６を介して流出され、その結果、制
御圧力室内の圧力が降下する。これによって閉鎖力の減
少に基づきノズルニードルの開放が可能になり、その結
果、燃料が噴射される。The control valve 24 has a valve needle (V
entilnadel) 28 and the valve needle has a valve seat 30
It is designed to work with. Valve needle 28 is valve seat 3
When it is in contact with zero, the control valve 24 is closed, and as a result, the fuel supplied into the control pressure chamber 16 via the inflow passage 18 is blocked in the control pressure chamber. The high pressure generated by this causes a closing force on the operating member 14, which is greater than the opening force acting on the nozzle needle 12. Therefore, the fuel injection valve is closed. Conversely, when the valve needle 28 is lifted (separated) from the valve seat 30, fuel flows out of the control pressure chamber 16 through the control chamber 22 and the outflow passage 26, and as a result, the pressure in the control pressure chamber drops. I do. This allows the nozzle needle to be opened based on a reduction in the closing force, so that fuel is injected.
【００１３】次に図３を用いて、本発明に基づく制御弁
の第１実施例を説明する。制御圧力室１６内に絞り部材
４０を配置してあり、絞り部材が円錐台形若しくは円錐
形のシール面４２を備えており、シール面が円錐形の弁
座４４と協働するようになっている。制御圧力室１６内
に圧縮ばね４８を配置してあり、圧縮ばねが絞り部材４
０を負荷して弁座４４に接触させている。絞り部材４０
内に絞り孔５０を形成してあり、絞り孔は制御圧力室１
６の流出路の一部分である。絞り部材４０は操作部材１
４と逆の側に溝５２を備えており、溝が絞り孔５０に接
続されている。Next, a first embodiment of a control valve according to the present invention will be described with reference to FIG. A throttle member 40 is arranged in the control pressure chamber 16, the throttle member having a frustoconical or conical sealing surface 42, which cooperates with a conical valve seat 44. . A compression spring 48 is disposed in the control pressure chamber 16, and the compression spring is
0 is applied to contact the valve seat 44. Aperture member 40
A throttle hole 50 is formed in the control pressure chamber 1.
6 is a part of the outflow channel. The aperture member 40 is the operation member 1
A groove 52 is provided on the side opposite to 4, and the groove is connected to the throttle hole 50.
【００１４】絞り部材４０がさらに閉鎖部材（閉鎖機
構）５４を備えており、閉鎖部材が制御縁部として形成
されていて、制御圧力室１６内への流入路１８を閉鎖す
るようになっている。閉鎖部材５４が絞り部材の片側に
設けられた突出部として形成されている場合には、付加
的に回動防止手段を設けているとよく、回動防止手段が
片側の突出部、即ち制御縁部（閉鎖部材）と流入路１８
との正確な整合（合致）を保証している。これに対して
絞り部材が回転対称的な構成部分として形成されている
場合には、回動防止手段が省略される。この場合、絞り
部材の外周部分が制御縁部として有効であるように正確
に加工される。The throttle member 40 further comprises a closing member (closing mechanism) 54, which is formed as a control edge so as to close the inflow channel 18 into the control pressure chamber 16. . When the closing member 54 is formed as a protrusion provided on one side of the throttle member, it is preferable to additionally provide an anti-rotation means, and the anti-rotation means is provided on one side, that is, the control edge. Part (closing member) and inflow channel 18
The exact match (match) with the is guaranteed. On the other hand, when the aperture member is formed as a rotationally symmetric component, the rotation preventing means is omitted. In this case, the outer peripheral portion of the aperture member is accurately processed so as to be effective as a control edge.
【００１５】制御弁は絞り部材と次のように協働する：
弁ニードル２８を制御室２２内へわずかに調節する（移
動させる）と、弁ニードルはもはや絞り部材４０には接
触しておらず、制御圧力室１６から絞り孔５０及び弁座
３０を経て延びる流出路が開かれていて、該流出路は比
較的小さい横断面しか有していない。該横断面は特に絞
り孔５０の横断面によって規定されている。該小さな流
出路横断面に基づき制御圧力室内に生じる圧力差は、操
作部材１４及びノズルニードル１２のわずかな調節（移
動）を生ぜしめ、従って、前噴射が行われる。The control valve cooperates with the throttle member as follows:
When the valve needle 28 is slightly adjusted (moved) into the control chamber 22, the valve needle is no longer in contact with the throttle member 40 and the outlet extends from the control pressure chamber 16 through the throttle hole 50 and the valve seat 30. The channel is open and the outlet channel has a relatively small cross section. The cross section is defined in particular by the cross section of the aperture 50. The pressure difference created in the control pressure chamber due to the small cross section of the outlet channel causes a slight adjustment (movement) of the operating member 14 and the nozzle needle 12, so that a pre-injection takes place.
【００１６】弁ニードル２８をさらに操作部材１４に向
けて調節すると、弁ニードルが絞り部材４０の図３で見
て上側の端部に接触して、絞り部材を制御圧力室１６内
へ押し込む。絞り部材４０が弁座４４から離れると同時
に、絞り部材に形成された制御縁部が流入路１８を少な
くとも部分的に閉鎖する。流入路の閉鎖に際して、制御
室へ向かう大きな流出路、即ち弁座４４と弁体面４２と
の間並びに絞り孔５０及び溝５２を経て延びる大きな流
出路が生じる。流入量の減少と流出量の増大とに基づき
制御圧力室内での急速な圧力降下が生じ、これによって
ノズルニードルの高い速度が生じる。このことは主噴射
にとって有利である。When the valve needle 28 is further adjusted toward the operating member 14, the valve needle contacts the upper end of the throttle member 40 as viewed in FIG. 3 and pushes the throttle member into the control pressure chamber 16. As soon as the throttle member 40 moves away from the valve seat 44, a control edge formed on the throttle member at least partially closes the inlet channel 18. Upon closing of the inflow channel, a large outflow channel to the control chamber, i.e., a large outflow channel extending between the valve seat 44 and the valve body surface 42 and through the throttle hole 50 and the groove 52 is formed. Due to the decrease in the inflow and the increase in the outflow, a rapid pressure drop in the control pressure chamber results, which results in a high speed of the nozzle needle. This is advantageous for the main injection.
【００１７】図４に第２実施例が示してある。図３の実
施例との相違点として、流入路１８の閉鎖のために、即
ち閉鎖機構として球形弁体６０を用いてある。球形弁体
はホルダー６２内に保持されていて、圧縮ばね６４によ
って絞り部材４０に向けて負荷されている。図４では流
入路１８が弁座６６と一緒に構成されており、弁座が円
筒形の付加部６８の端面に形成されている。付加部６８
はばね６４の固定のためにも役立っている。FIG. 4 shows a second embodiment. A difference from the embodiment of FIG. 3 is that a spherical valve body 60 is used for closing the inflow passage 18, that is, as a closing mechanism. The spherical valve body is held in a holder 62 and is loaded toward the throttle member 40 by a compression spring 64. In FIG. 4, the inflow passage 18 is formed together with the valve seat 66, and the valve seat is formed on the end face of the cylindrical additional portion 68. Addition section 68
Also serves to secure the spring 64.
【００１８】絞り部材４０に傾斜面７０を形成してあ
り、傾斜面が球形弁体６０と協働するようになってい
る。傾斜面７０は、球形弁体６０の切換動作を制御圧力
室内での絞り部材４０の調節に関連して適切に行うよう
に傾斜している。An inclined surface 70 is formed on the throttle member 40, and the inclined surface cooperates with the spherical valve element 60. The inclined surface 70 is inclined so that the switching operation of the spherical valve body 60 is appropriately performed in relation to the adjustment of the throttle member 40 in the control pressure chamber.
【００１９】第２実施例の絞り部材の機能は、第１実施
例の絞り部材の機能に相応している。第１の切換状態で
は、弁ニードル２８だけが弁座３０から離れているのに
対して、絞り部材４０は引き続き弁座４４に接触してい
る。流入路１８は開かれたままであり、制御圧力室１６
内からの燃料の流出がもっぱら絞り孔５０の横断面によ
って規定される。第２の切換状態（この場合、弁ニード
ル２８がさらに調節されて、絞り部材４０も該絞り部材
の弁座から離されている）では、一方で傾斜面７０と、
球形弁体６０と、弁座６６との協働作用によって、流入
路１８の横断面が部分的に若しくは完全に閉じられ、他
方で絞り部材４０が弁座４４から離れることによって、
絞り孔５０を経る流出路に加えて別の流出路が生ぜしめ
られる。The function of the throttle member of the second embodiment corresponds to the function of the throttle member of the first embodiment. In the first switching state, only the valve needle 28 is separated from the valve seat 30, while the throttle member 40 is still in contact with the valve seat 44. The inflow passage 18 remains open and the control pressure chamber 16
The outflow of fuel from inside is defined solely by the cross section of the throttle hole 50. In the second switching state (in this case, the valve needle 28 has been further adjusted and the throttle member 40 has also been separated from the valve seat of the throttle member), on the one hand the inclined surface 70,
By the cooperation of the spherical valve body 60 and the valve seat 66, the cross section of the inflow passage 18 is partially or completely closed, while the throttle member 40 is separated from the valve seat 44,
In addition to the outflow channel via the throttle hole 50, another outflow channel is created.
【図１】燃料噴射弁の概略的な断面図。FIG. 1 is a schematic sectional view of a fuel injection valve.
【図２】燃料噴射弁内に組み込まれた公知技術の制御弁
の拡大断面図。FIG. 2 is an enlarged sectional view of a control valve of the prior art incorporated in a fuel injection valve.
【図３】本発明に基づく制御弁の第１実施例の断面図。FIG. 3 is a sectional view of a first embodiment of a control valve according to the present invention.
【図４】本発明に基づく制御弁の第２実施例の断面図。FIG. 4 is a sectional view of a second embodiment of the control valve according to the present invention.
１０ 弁本体、 １２ ノズルニードル、 １４
操作部材、 １６制御圧力室、 １８ 流入路、
２０ 流出路、 ２２ 制御室、 ２４ 制御
弁、 ２４ 制御弁、 ２６ 流出路、 ２８
弁ニードル、３０ 弁座、 ４０ 絞り部材、 ４
２ シール面、 ４４ 弁座、４８ 圧縮ばね、
５０ 絞り孔、 ５２ 溝、 ５４ 閉鎖部材、６
０ 球形弁体、 ６２ ホルダー、 ６４ 圧縮ば
ね、 ６６ 弁座、 ６８ 付加部、 ７０ 傾
斜面10 valve body, 12 nozzle needle, 14
Operating members, 16 control pressure chambers, 18 inflow channels,
Reference Signs List 20 outflow channel, 22 control room, 24 control valve, 24 control valve, 26 outflow channel, 28
Valve needle, 30 valve seat, 40 throttle member, 4
2 sealing surface, 44 valve seat, 48 compression spring,
50 throttle hole, 52 groove, 54 closing member, 6
0 spherical valve body, 62 holder, 64 compression spring, 66 valve seat, 68 additional part, 70 inclined surface
フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｆ０２Ｍ 47/02 Ｆ０２Ｍ 47/02 61/20 61/20 Ｎ Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat II (reference) F02M 47/02 F02M 47/02 61/20 61/20 N
Claims (3)
御室（２２）内で調節可能な弁ニードル（２８）及び制
御圧力室（１６）を備えており、制御圧力室が流入路
（１８）及び流出路（４２，４４，５０）を有している
形式のものにおいて、制御圧力室（１６）内に絞り部材
（４０）のための弁座（４４）が形成されており、絞り
部材が絞り孔（５０）を備えていて、ばね部材（４８）
によって弁座（４４）に向けて負荷されており、閉鎖部
材（５４，６０）を設けてあり、閉鎖部材が、絞り部材
（４０）を弁座（４４）から離す際に、流入路（１８）
を少なくとも部分的に閉鎖するようになっていることを
特徴とする、燃料噴射弁のための制御弁。1. A control valve for a fuel injection valve, comprising a valve needle (28) adjustable in a control chamber (22) and a control pressure chamber (16), the control pressure chamber comprising an inlet passage. (18) and an outlet channel (42, 44, 50), wherein a valve seat (44) for a throttle member (40) is formed in the control pressure chamber (16); A diaphragm member provided with a diaphragm hole (50);
And a closing member (54, 60) provided by the closing member when the throttle member (40) moves away from the valve seat (44). )
Control valve for a fuel injection valve, characterized in that the control valve is at least partially closed.
制御縁部によって形成されている請求項１記載の制御
弁。2. The control valve according to claim 1, wherein the closing member (54) is formed by a control edge of the throttle member (40).
成されており、絞り部材（４０）が傾斜面（７０）を備
えており、傾斜面が球形弁体（６０）を作動するように
なっている請求項１記載の制御弁。3. The closure member is formed by a spherical valve body (60), the throttle member (40) is provided with an inclined surface (70), and the inclined surface activates the spherical valve body (60). The control valve according to claim 1, wherein
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1999140290 DE19940290A1 (en) | 1999-08-25 | 1999-08-25 | Control valve for a fuel injector |
| DE19940290.6 | 1999-08-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001082296A true JP2001082296A (en) | 2001-03-27 |
Family
ID=7919545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000255975A Pending JP2001082296A (en) | 1999-08-25 | 2000-08-25 | Control valve for fuel injection valve |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2001082296A (en) |
| DE (1) | DE19940290A1 (en) |
| GB (1) | GB2353564B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878274A (en) * | 2020-07-29 | 2020-11-03 | 一汽解放汽车有限公司 | Fuel injection valve and diesel engine |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19860397A1 (en) * | 1998-12-28 | 2000-06-29 | Bosch Gmbh Robert | Fuel injection device for internal combustion engines |
| DE10017366C2 (en) * | 2000-04-07 | 2002-10-31 | Siemens Ag | Control unit for an injector of an injection system |
| GB0107575D0 (en) * | 2001-03-27 | 2001-05-16 | Delphi Tech Inc | Control valve arrangement |
| GB0215490D0 (en) | 2002-07-04 | 2002-08-14 | Delphi Tech Inc | Control valve arrangement |
| DE102008042293A1 (en) * | 2008-09-23 | 2010-03-25 | Robert Bosch Gmbh | Injector for injecting high-pressure fuel into the combustion chamber of an internal combustion engine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19727896A1 (en) * | 1997-07-01 | 1999-01-07 | Bosch Gmbh Robert | Fuel injector |
-
1999
- 1999-08-25 DE DE1999140290 patent/DE19940290A1/en not_active Ceased
-
2000
- 2000-08-15 GB GB0019914A patent/GB2353564B/en not_active Expired - Fee Related
- 2000-08-25 JP JP2000255975A patent/JP2001082296A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878274A (en) * | 2020-07-29 | 2020-11-03 | 一汽解放汽车有限公司 | Fuel injection valve and diesel engine |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2353564B (en) | 2001-10-31 |
| DE19940290A1 (en) | 2001-03-01 |
| GB2353564A (en) | 2001-02-28 |
| GB0019914D0 (en) | 2000-09-27 |
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