JPS59180063A - Fuel injector for internal combustion engine - Google Patents
Fuel injector for internal combustion engineInfo
- Publication number
- JPS59180063A JPS59180063A JP5458884A JP5458884A JPS59180063A JP S59180063 A JPS59180063 A JP S59180063A JP 5458884 A JP5458884 A JP 5458884A JP 5458884 A JP5458884 A JP 5458884A JP S59180063 A JPS59180063 A JP S59180063A
- Authority
- JP
- Japan
- Prior art keywords
- internal combustion
- nozzle
- combustion engine
- fuel
- injection
- 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
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
-
- 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
- F02M45/086—Having more than one injection-valve controlling discharge orifices
-
- 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
- F02M2200/29—Fuel-injection apparatus having rotating means
-
- 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
- F02M2200/46—Valves, e.g. injectors, with concentric valve bodies
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
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は内燃恨関の燃料噴射装置に関し、複数の噴射孔
を有する少なくとも１個の噴射ノズルを備え、ノズル本
体に移動自在に設けられたノズル二ードル弁によって上
記のすべての噴射孔に供給される燃料が制御され、また
これらの噴射孔の少なくとも１個に供給される燃料はさ
らに調整自在な遮断部材によって制御されるものに関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fuel injection device for internal combustion, which is equipped with at least one injection nozzle having a plurality of injection holes, and has a nozzle needle valve movably provided in a nozzle body. The fuel supply to all injection holes is controlled, and the fuel supply to at least one of these injection holes is further controlled by an adjustable shut-off member.
この種の燃料噴射装置は内燃機関の燃焼室内に燃料を噴
射する噴射孔の数を遮断部材の位置に対応して変更し、
実質的なノズル開口面積を段階的に変えるように構成さ
れている。そして、内燃機関が部分負荷で運転されてい
る場合にはこの実質的なノズル開口面積が減少され、燃
料の圧力が充分な高圧に維持され、燃料が良好に噴霧さ
れ最善の状態で燃焼されるように構成されている。This type of fuel injection device changes the number of injection holes for injecting fuel into the combustion chamber of an internal combustion engine in accordance with the position of the blocking member,
It is configured to change the actual nozzle opening area in stages. When the internal combustion engine is operated at partial load, this effective nozzle opening area is reduced, and the fuel pressure is maintained at a sufficiently high pressure so that the fuel can be atomized well and combusted in the best possible manner. It is configured as follows.
ドイツ国特許 ＯＳ Ｎｏ． ３，３０６．５８３
には燃料の圧力によって噴射孔の数を制御し、燃料噴射
を改善する燃料噴射ノズルが開示されている。このよう
な燃料噴射ノズルはノズル二ードル弁にドラッグニード
ルが接続されており、このドラッグニードルによって全
ての噴射孔への燃料の供給を制御する。このドラッグニ
ードルは所定の圧力上袢があった場合または上記ノズル
二ードル弁が所定量だけ上昇すると遮断部材として噴射
孔の数を変更し、また追加の噴射孔を開放する。しかし
、このようなものは原理的に各噴射行程の初期において
はきわめて小さなノズル開口面積しか得られない。そし
て、燃料の圧力が所定の値を超えると時間的に遅れてノ
ズル開口面積が増加する。German patent OS No. 3,306.583
discloses a fuel injection nozzle that improves fuel injection by controlling the number of injection holes depending on the fuel pressure. In such a fuel injection nozzle, a drag needle is connected to a nozzle needle valve, and the drag needle controls the supply of fuel to all injection holes. This drag needle acts as a blocking member to change the number of injection holes and to open additional injection holes when a predetermined pressure rises or when the nozzle needle valve rises by a predetermined amount. However, in principle, such a nozzle opening area is only extremely small at the beginning of each injection stroke. Then, when the fuel pressure exceeds a predetermined value, the nozzle opening area increases with a time delay.
また、このものは上記のノズル二ードル弁をレバーを介
してスプリングによって付勢し、この付勢力を調整する
ことによって上記ノズル開口面積の増加が開始れる点の
設定をおこなっていた。このため、このノズル開口面積
の増加が開始される点の設定が困難であった。特に、複
数の噴射ノズルを有する内燃機間では、ノズル開口面積
が小さい５−
状態から大きな状態に移行する点を許容範囲内に同期さ
せ均一に揃えるのが困難である不具合があった。また、
このようなものはノズル二ードル弁の移動によって遮断
部材の調整作動が規制されるので、この遮断部材の作動
は燃料系統内の燃料の圧力によって作動されることにな
り、複数のシリンダを備えた内燃機関には適しない不具
合があった。Further, in this device, the nozzle needle valve is biased by a spring via a lever, and by adjusting this biasing force, the point at which the nozzle opening area starts to increase is set. For this reason, it has been difficult to set the point at which the nozzle opening area starts to increase. In particular, in internal combustion engines having a plurality of injection nozzles, there is a problem in that it is difficult to synchronize and uniformly align the points where the nozzle opening area changes from the small state to the large state within an allowable range. Also,
In such a device, the adjustment operation of the shutoff member is regulated by the movement of the nozzle needle valve, so the operation of the shutoff member is activated by the pressure of the fuel in the fuel system. There were some defects that made it unsuitable for internal combustion engines.
本発明は以上の事情に基づいてなされたもので、その目
的は遮断部材の作動が正確であるとともに構造が簡単で
あり、多シリンダ機関においても最適な燃焼を達成する
ことができる燃料供給装置を提供することにある。The present invention has been made based on the above-mentioned circumstances, and its purpose is to provide a fuel supply system that allows accurate operation of the shutoff member, has a simple structure, and is capable of achieving optimal combustion even in a multi-cylinder engine. It is about providing.
この本発明の目的は、内燃機関の運転状態に対応して作
動する調整機構によって上記の遮断部材を上記のノズル
二ードル弁の位置から独立して作動させることによって
達成される。This object of the invention is achieved in that the shut-off member is actuated independently of the position of the nozzle needle valve by means of an adjustment mechanism which is actuated in response to the operating state of the internal combustion engine.
また、この本発明のものは上記各噴射ノズル毎にその遮
断部材の調整がそれぞれ独立してなされるので、これら
複数の噴射ノズルの遮断部材の作６−
動を等しくすることができる。したがって、従来のもの
と比較すると本発明のものは遮断部材がノズルニードル
弁とは無関係に独立して調整でき、またこれら遮断部材
は内燃機関の運転状態に対応して別々に制御して作動さ
せることができる。また、本発明のものは遮断部材がノ
ズルニードル弁の位置とは無関係に調整することができ
、機関の全負荷運転場合でも噴射初期の状態から大きな
ノズル開口面積が１ｑられ、かつこの作動は同期させる
ことができる。Further, in the present invention, since the adjustment of the blocking member is made independently for each of the injection nozzles, the operations of the blocking members of the plurality of injection nozzles can be made equal. Therefore, compared to the conventional one, in the present invention, the shutoff members can be adjusted independently and independently of the nozzle needle valve, and these shutoff members are separately controlled and actuated in response to the operating state of the internal combustion engine. be able to. In addition, in the present invention, the shutoff member can be adjusted independently of the position of the nozzle needle valve, and even when the engine is operating at full load, a large nozzle opening area of 1q can be obtained from the initial injection state, and this operation is synchronous. can be done.
また、ドイツ国特許 Ｏ８２，９４３，８９６には機関
の仕様に対応してノズル開口面積が制御されるものが開
示されている。しかし、このようなものは、ノズルニー
ドル弁および調整自在な遮断部材を有し燃料供給管の燃
料をノズルに供給する噴射ノズルを複数個別々に設けて
いた。このため、このようなものは構造が複雑なり、ま
た取付けに大きなスペースを必要とする等の不具合があ
った。Further, German Patent No. 082,943,896 discloses a device in which the nozzle opening area is controlled in accordance with the specifications of the engine. However, such a device is provided with a plurality of individual injection nozzles each having a nozzle needle valve and an adjustable shutoff member and supplying fuel from the fuel supply pipe to the nozzle. For this reason, such a device has a complicated structure and requires a large space for installation.
以下、図を参照して本発明の詳細な説明する第１図およ
び第２図は本発明の第１実施例を示す。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings. FIGS. 1 and 2 show a first embodiment of the present invention.
図中１０は噴射ノズルであって、１１はそのノズル本体
である。そして、このノズル本体１１には燃料入口通路
１２が形成され、この燃料入口通路１２は燃料チャンバ
１３内に連通している。また、このノズル本体１１には
その軸方向に沿ってノズルニードル弁１４が設けられて
いる。このノズルニードル弁１４の外周には上記燃料チ
ャンバ１３の近傍に位置して環状段部１５が形成され、
またその先端部には円錐弁部１６が形成され、この円錐
弁部１６は上記のノズル本体１１に形成されたバルブシ
ート１７に着座するように構成されている。また、上記
のノズル本体１１には複数個の噴射孔１８．１９が形成
され、これらの噴射孔１８゜１９は軸方向に離間して配
置されている。上記のノズルニードル弁１４は燃料入口
通路１２内の燃料の圧力によって上方に移動され、燃料
は上記のバルブシート１７を介して噴出孔１８．１９に
供給され、内燃機関の燃焼室内に噴射されるように構成
されている。なお、上記の構成および作用は従来のもの
と同様である。In the figure, 10 is an injection nozzle, and 11 is the nozzle body. A fuel inlet passage 12 is formed in this nozzle body 11, and this fuel inlet passage 12 communicates with the inside of a fuel chamber 13. Further, a nozzle needle valve 14 is provided in the nozzle body 11 along its axial direction. An annular stepped portion 15 is formed on the outer periphery of the nozzle needle valve 14 in the vicinity of the fuel chamber 13.
Further, a conical valve portion 16 is formed at the tip thereof, and this conical valve portion 16 is configured to sit on a valve seat 17 formed in the nozzle body 11 described above. Further, a plurality of injection holes 18 and 19 are formed in the nozzle body 11, and these injection holes 18 and 19 are spaced apart from each other in the axial direction. The nozzle needle valve 14 is moved upward by the pressure of the fuel in the fuel inlet passage 12, and the fuel is supplied to the injection hole 18, 19 through the valve seat 17 and injected into the combustion chamber of the internal combustion engine. It is configured as follows. Note that the above structure and operation are similar to those of the conventional one.
そして、この第１図のものはノズル本体１１の先端部に
空洞部２０が形成され、この空洞部２０はこのノズル本
体１１の先端面２１に開口している。そして、この空洞
部２０内には遮断部材２３の摺動遮断部２２が密嵌して
案内されている。この遮断部材２３は上記のノズルニー
ドル弁１４の空洞２４内を貫通しかつ案内されている。In the one shown in FIG. 1, a cavity 20 is formed at the tip of the nozzle body 11, and this cavity 20 opens at the tip surface 21 of the nozzle body 11. A sliding blocking portion 22 of a blocking member 23 is tightly fitted and guided within this cavity 20. This blocking member 23 passes through and is guided in a cavity 24 of the nozzle needle valve 14 described above.
この１度断部材２３は第１図に模式的に示す如き磁石等
の調整機構２５によってこのノズル本体１１の軸方向に
移動調整されるように構成されている。そして、内燃機
関が部分負荷運転状態の場合には、この遮断部材２３は
第１図に示す如き状態となる。This one-time cutting member 23 is configured to be moved and adjusted in the axial direction of the nozzle body 11 by an adjusting mechanism 25 such as a magnet as schematically shown in FIG. When the internal combustion engine is in a partial load operating state, the shutoff member 23 is in a state as shown in FIG.
そして、この状態では燃料の供給方向の先端側の噴射孔
１つは遮断される。また、内燃機関が全負荷運転の場合
には、上記の調整機構２５は上記の遮断部材２３を矢印
Ｐの方向に移動させて部分負荷位置から全負荷位置まで
移動させ、このリフトＨによって先端側の噴射孔１９を
開放する。したがって、この全負荷運転時には上記の噴
射孔１８゜９−
１９の数が増加し、ノズル開口面積が部分負荷運転の場
合より大きくなる。In this state, one injection hole on the tip side in the fuel supply direction is blocked. Further, when the internal combustion engine is in full load operation, the adjustment mechanism 25 moves the blocking member 23 in the direction of arrow P from the partial load position to the full load position, and the lift H causes the distal end side to move. The injection hole 19 is opened. Therefore, during full load operation, the number of injection holes 189-19 increases, and the nozzle opening area becomes larger than during partial load operation.
この遮断部材２３の調整作動は上記のノズルニードル弁
１４とは全く独立しておこなわれる。従って、全負荷運
転の場合にこの遮断部材２３は連続して全負荷位置とな
り、このノズル開口面積は噴射初期からすでに大きくな
る。さらに第１図にも示したように遮断部材２３は調整
機構２５によって駆動され、この調整機構２５は回路２
６によって制御され、この回路２Ｇの入力信号は内燃機
関の運転状態たとえばその回転速度に対応して閉成され
るスイッチング信号である。第１図ではこの回路２６は
他の噴射ノズルの調整機構２５−も制御するように構成
され、よって全ての噴射ノズルの遮断部材２３は同期し
て制御され、これら遮断部材２３は全て同じ切換え点で
作動される。This adjustment operation of the blocking member 23 is performed completely independently of the nozzle needle valve 14 described above. Therefore, in the case of full-load operation, this blocking member 23 is continuously in the full-load position, and the nozzle opening area is already large from the beginning of injection. Further, as shown in FIG. 1, the blocking member 23 is driven by an adjusting mechanism 25, which
6, the input signal of this circuit 2G is a switching signal that is closed in response to the operating state of the internal combustion engine, for example its rotational speed. In FIG. 1, this circuit 26 is configured in such a way that it also controls the adjustment mechanism 25- of the other injection nozzles, so that the shut-off elements 23 of all the injection nozzles are controlled synchronously, and these shut-off elements 23 all have the same switching point. is activated.
第２図には上記のノズル本体１１をノズルホルダ３０に
取付けた状態を示す。このノズル本体はユニオンナット
３１によってノズルホルダ３０に螺装されている。この
ノズルホルダ３０には中空１０−
の支柱３２が軸方向に移動自在に案内され、この支柱３
２は押圧スプリング３３を介して調節螺子３４によって
支持され、このノズルニードル弁１４をバルブシート１
７に押圧している。そして、この噴射弁の開弁圧力はこ
の調節螺子３４によって任意の値に設定されるように構
成されている。FIG. 2 shows a state in which the above-mentioned nozzle main body 11 is attached to a nozzle holder 30. This nozzle body is screwed onto the nozzle holder 30 with a union nut 31. A hollow support 32 is guided in the nozzle holder 30 so as to be movable in the axial direction.
2 is supported by an adjustment screw 34 via a pressure spring 33, and the nozzle needle valve 14 is connected to the valve seat 1.
It's pressed to 7. The valve opening pressure of this injection valve is configured to be set to an arbitrary value by this adjustment screw 34.
また、上記のノズルホルダ３ｏには燃料通路３５が形成
されており、この燃料通路３５は上記のノズル本体１１
の燃料入口通路１２に連通している。Further, a fuel passage 35 is formed in the nozzle holder 3o, and this fuel passage 35 is connected to the nozzle body 11.
The fuel inlet passage 12 is connected to the fuel inlet passage 12 of the fuel inlet passage 12 .
そして、上記の遮断部材２３は上記のノズル本体１１よ
りはるかに長く、上記の支柱３２内を貫通し、ざらに押
圧スプリング３３および調節３４を貫通している。上記
の調整機構（第２図には図示せず）は上記の押圧スプリ
ング３３とは別に上記の遮断部材２３をノズル本体１１
に向けて駆動する。よって、この調整手段を上記の調節
螺子３４に組込んだり、またこの調節螺子３４と一体的
な構造体に組込んだりすることができる。また、第２図
に示すものはその構成が従来のものと充分に対応するよ
うに構成されており、連続的に生産された部品が広く使
用できる。また、調整機構２５の動きはこの噴射ノズル
１０内の部品の内部に形成された空洞部を介して摺動遮
断部２２まで伝達されるので、特に余分なスペースを必
要としない。The blocking member 23 is much longer than the nozzle body 11 and passes through the support 32 and roughly through the pressure spring 33 and adjustment 34. The above-mentioned adjustment mechanism (not shown in FIG. 2) separates the above-mentioned blocking member 23 from the above-mentioned pressing spring 33 into the nozzle body 11.
drive towards. Therefore, this adjustment means can be incorporated into the above-mentioned adjustment screw 34 or into a structure integral with this adjustment screw 34. Furthermore, the structure of the structure shown in FIG. 2 sufficiently corresponds to that of the conventional structure, and continuously produced parts can be widely used. Moreover, since the movement of the adjustment mechanism 25 is transmitted to the sliding cutoff part 22 via the cavity formed inside the parts in the injection nozzle 10, no extra space is required.
また、第３図には本発明の第２実施例を示す。Further, FIG. 3 shows a second embodiment of the present invention.
この第２実施例のものは遮断部材２３に円錐弁体４０が
形成されており、この円錐弁体４０はノズル本体１１に
形成されたバルブシート４１に着座する。このバルブシ
ート４１は軸方向に離間した噴射孔１８．１９の間に形
成されている。また、これらの噴射孔１８．１９は第３
図に示す如くその開口面積が異なっている。In this second embodiment, a conical valve body 40 is formed in the shutoff member 23, and this conical valve body 40 is seated on a valve seat 41 formed in the nozzle body 11. This valve seat 41 is formed between axially spaced injection holes 18,19. In addition, these injection holes 18 and 19 are the third
As shown in the figure, the opening areas are different.
前記の第１実施例と第２実施例とを対比すると、第１実
施例のものは遮断部材２３が燃料の供給方向に移動して
作動するのに対し、この第２実施例のものは遮断部材２
３が燃料の供給方向とは反対の方向に移動して作動し、
噴射孔１つを開放する。Comparing the first embodiment and the second embodiment, it is found that in the first embodiment, the shutoff member 23 operates by moving in the fuel supply direction, whereas in the second embodiment, the shutoff member 23 operates by moving in the fuel supply direction. Part 2
3 operates by moving in the direction opposite to the direction of fuel supply,
Open one injection hole.
この第２実施例のものは第１実施例のものより強力な調
整機構が必要となる。しかし、前記の第１実施例のもの
は燃料が空洞部２ｏまたは前方の噴射孔１９から漏洩し
、燃料のロスを完全に零とすることはできないが、この
第２実施例のものは上記遮断部材２３が着座状態となる
と完全なシールが得られる利点がある。This second embodiment requires a more powerful adjustment mechanism than the first embodiment. However, in the first embodiment, fuel leaks from the cavity 2o or the front injection hole 19, and the fuel loss cannot be completely eliminated, but in the second embodiment, the fuel leaks from the cavity 2o or the front injection hole 19. Advantageously, a complete seal is obtained when member 23 is seated.
また、第４図には本発明の第３実施例を示し、この図は
ノズル本体１１を噴射孔１８．１９の位置で切断した横
断面図である。これらの噴射孔１８．１９は周方向に離
間して配置されている。この第３実施例では遮断部材２
３は回転摺動形に形成され、第４ａ図に示す如き位置に
回動して全部の噴射孔１８．１９を開放し、また第４ｂ
図に示す如き位置に回動して４個の噴射孔１９を閉塞す
る。FIG. 4 shows a third embodiment of the present invention, and this figure is a cross-sectional view of the nozzle body 11 cut at the injection holes 18 and 19. These injection holes 18, 19 are spaced apart in the circumferential direction. In this third embodiment, the blocking member 2
No. 3 is formed in a rotating and sliding type, and rotates to the position shown in FIG. 4a to open all the injection holes 18, 19, and No. 4b
It is rotated to the position shown in the figure to close the four injection holes 19.
尚、前記の第１図には調整機構として電磁形のものを示
したが、この電磁形のものの代わりに油圧形あるいは空
圧形のものでもよい。この全ての噴射ノズルの調整機構
は内燃機関の運転状態等から総合的に得られる信号を介
して同期して制御され、従来のもののように各噴射ノズ
ルの燃料の圧１３−
力によって制御されるものではない。Although an electromagnetic adjustment mechanism is shown in FIG. 1, a hydraulic or pneumatic adjustment mechanism may be used instead of the electromagnetic adjustment mechanism. The adjustment mechanisms for all of these injection nozzles are controlled synchronously via signals comprehensively obtained from the operating conditions of the internal combustion engine, and are controlled by the fuel pressure of each injection nozzle, as in the conventional system. It's not a thing.
第１図および第２図は本発明の第１実施例を示し、第１
図は噴射ノズルの縦断面図、第２図は噴射ノズルをノズ
ルホルダに取付けた状態の縦断面図である。第３図は本
発明の第２実施例の縦断面図、第４ａ図および第４ｂ図
は本発明の第２実施例の横断面図である。
１０・・・噴射ノズル、１１・・・ノズル本体、１３・
・・燃料チャンバ、１４・・・ノズルニードル弁、１８
゜１９・・・噴射孔、２０・・・空洞部、２３・・・遮
断部材、２５・・・調整機構
出願人代理人 弁理士 鈴江武彦
＝１４−
Ｆｉｇ、３
２３
特開昭５９−１８００６３ （６）
Ｆ少、４1 and 2 show a first embodiment of the present invention;
The figure is a longitudinal sectional view of the injection nozzle, and FIG. 2 is a longitudinal sectional view of the injection nozzle attached to the nozzle holder. FIG. 3 is a longitudinal cross-sectional view of a second embodiment of the present invention, and FIGS. 4a and 4b are cross-sectional views of the second embodiment of the present invention. 10... Injection nozzle, 11... Nozzle body, 13.
...Fuel chamber, 14...Nozzle needle valve, 18
゜19...Injection hole, 20...Cavity portion, 23...Shutoff member, 25...Adjustment mechanism Applicant's agent Patent attorney Takehiko Suzue = 14- Fig, 3 23 JP-A-59-180063 ( 6) F small, 4
Claims (1)
くとも１個の噴射ノズルを備え、これら噴射孔に供給さ
れる燃料は上記ノズル本体に軸方向に移動自在に設けら
れたノズルニードル弁によって制御され、また上記噴射
孔のうちの少なくとも１個はこれに加えて調整自在な遮
断部材によって制御されるものにおいて、上記遮断部材
２３は調整機構２５によって内燃機関の運転状態に対応
しかつ上記ノズルニードル弁１４の位置とは無関係に駆
動されるものであることを特徴とする内燃機関の燃料噴
射装置。 （２） 前記遮断部材２３は前記ノズル本体１１の軸方
向に調整自在であり、またこのノズル本体１１には互い
に軸方向に離間して設けられた少なくとも２個の噴射孔
１８．１９が形成され、これら噴射孔のうち少なくとも
燃料の供給方向の前方側にある噴射孔１９は前記遮断部
材２３によって制御されるものであることを特徴とする
特許請求の範囲第１項記載の内燃機関の燃料噴射装置。 （３） 前記ノズル本体１１には空洞部２ｏが形成され
、この空洞部には軸方向に偏寄した噴射孔１８、１９が
連通され、またこの空洞部２０には前記遮断部材２３の
摺動遮断部２２が気密をもって密嵌案内されていること
を特徴とする前記特許請求の範囲第２項記載の内燃機関
の燃料噴射装置。 （４） 前記のノズル本体には先端面２１に開口する空
洞部２０が形成されているものであることを特徴とする
前記特許請求の範囲第３項記載の内燃機関の燃料噴射装
置。 （５》 前記摺動遮断部２２は燃料の供給方向に移動し
て前記少なくとも１個の噴射孔１つを閉塞している部分
負荷位置から全負荷位置に移行するものであることを特
徴とする前記特許請求の範囲第３項または第４項ｎφ載
の内燃機関の燃料噴射装置。 （６） 前記ノズル本体１１には空洞部２ｏが形成され
、この空洞部には軸方向に離間した２個の噴射孔１８．
１９の間に位置してバルブシート４１が形成され、また
前記遮断部材にはこのバルブシート４１に着座する円錐
弁部４０が形成され、燃料の供給方向と逆の方向に移動
して全負荷位置に移行するものであることを特徴とする
特許請求の範囲第２項記載の内燃機関の燃料噴射装置（
７） 前記遮断部材２３には周方向に離間して同一平面
上に配置ざれた噴射孔１つを開閉制御す（８） 前記遮
断部材２３は前記ノズルニードル弁１７内に形成された
空洞部２４に回転自在に案内され、このノズル二ードル
弁１４を駆動する押圧スプリング３３を貫通して調整機
構２５に機械的に接続されているものであることを特徴
とする前記特許請求の範囲第１項ないし第７項のいずれ
か１に記載の内燃機関の燃料噴射装置。 （９） 前記調整機構２５は、機械的、油圧的、空圧的
または電磁的に作動されるものであることを特徴とする
前記特許請求の範囲第１項ないし第８項のいずれか１に
記載の内燃機関の燃料噴射装置。[Scope of Claims] (1) At least one injection nozzle is provided with a nozzle body having a plurality of injection holes, and the fuel supplied to these injection holes is provided in the nozzle body so as to be movable in the axial direction. the nozzle needle valve, and at least one of the injection orifices is additionally controlled by an adjustable shut-off element, the shut-off element 23 being adapted to the operating state of the internal combustion engine by means of an adjustment mechanism 25. A fuel injection device for an internal combustion engine, characterized in that the fuel injection device corresponds to the nozzle needle valve 14 and is driven independently of the position of the nozzle needle valve 14. (2) The blocking member 23 is adjustable in the axial direction of the nozzle body 11, and the nozzle body 11 is formed with at least two injection holes 18, 19 spaced apart from each other in the axial direction. Fuel injection for an internal combustion engine according to claim 1, wherein at least among these injection holes, the injection hole 19 located on the front side in the fuel supply direction is controlled by the blocking member 23. Device. (3) A cavity 2o is formed in the nozzle body 11, and the injection holes 18 and 19 which are offset in the axial direction are communicated with this cavity, and the shielding member 23 is slidable in this cavity 20. 3. The fuel injection device for an internal combustion engine according to claim 2, wherein the blocking portion 22 is guided in an airtight manner. (4) The fuel injection device for an internal combustion engine as set forth in claim 3, wherein the nozzle body has a cavity 20 that opens at the tip end surface 21. (5) The sliding shutoff portion 22 is characterized in that it moves in the fuel supply direction and shifts from a partial load position in which it closes one of the at least one injection hole to a full load position. A fuel injection device for an internal combustion engine according to claim 3 or 4. (6) A cavity 2o is formed in the nozzle body 11, and the cavity includes two axially spaced nozzles. Nozzle hole 18.
19, a valve seat 41 is formed, and the shutoff member is formed with a conical valve portion 40 seated on the valve seat 41, and is moved in a direction opposite to the fuel supply direction to a full load position. A fuel injection device for an internal combustion engine according to claim 2, characterized in that the system transitions to
7) The blocking member 23 controls the opening and closing of one injection hole that is spaced apart in the circumferential direction and arranged on the same plane. (8) The blocking member 23 has a cavity 24 formed in the nozzle needle valve 17. The nozzle needle valve 14 is mechanically connected to the adjustment mechanism 25 through a pressing spring 33 that drives the nozzle needle valve 14. 8. The fuel injection device for an internal combustion engine according to any one of items 7 to 7. (9) The adjustment mechanism 25 is mechanically, hydraulically, pneumatically, or electromagnetically operated. Fuel injection device for the internal combustion engine described.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE33111383 | 1983-03-26 | ||
| DE19833311138 DE3311138A1 (en) | 1983-03-26 | 1983-03-26 | FUEL INJECTION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59180063A true JPS59180063A (en) | 1984-10-12 |
Family
ID=6194806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5458884A Pending JPS59180063A (en) | 1983-03-26 | 1984-03-23 | Fuel injector for internal combustion engine |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS59180063A (en) |
| DE (1) | DE3311138A1 (en) |
| FR (1) | FR2543224A1 (en) |
| GB (1) | GB2137280B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0527725A (en) * | 1991-07-23 | 1993-02-05 | Fujita Corp | Message output device |
| EP0853195A1 (en) | 1997-01-14 | 1998-07-15 | Zexel Corporation | Fuel injection nozzle |
| US6055957A (en) * | 1996-12-24 | 2000-05-02 | Zexel Corporation | Fuel injection control method using variable nozzle hole fuel injection nozzle |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6036772A (en) * | 1983-08-10 | 1985-02-25 | Diesel Kiki Co Ltd | Fuel injection valve |
| EP0147026A3 (en) * | 1983-12-27 | 1985-08-14 | Osamu Matsumura | Fuel injection apparatus |
| DE3429471A1 (en) * | 1984-08-10 | 1986-02-13 | L'Orange GmbH, 7000 Stuttgart | FUEL INJECTION DEVICE FOR AN INTERNAL COMBUSTION ENGINE |
| AT391352B (en) * | 1986-01-23 | 1990-09-25 | Steyr Daimler Puch Ag | AIR COMPRESSING, SELF-IGNITION INJECTION INTERNAL COMBUSTION ENGINE WITH A FLAME STARTING DEVICE |
| DE4017391C2 (en) * | 1990-05-30 | 1993-10-07 | Man Nutzfahrzeuge Ag | Injection cross-section-controlled injection nozzle for air-distributed fuel injection in an air-compressing internal combustion engine |
| DE4203343C1 (en) * | 1992-02-06 | 1993-05-19 | Mtu Friedrichshafen Gmbh | IC engine fuel injection nozzle - has combustion chamber facing openings or spray holes coverable by peripheral closure wall parts |
| GB2281940A (en) * | 1993-09-17 | 1995-03-22 | Lucas Ind Plc | I.c. engine fuel injector |
| DE19839632A1 (en) * | 1998-08-31 | 2000-03-02 | Siemens Ag | Stroke fuel injector |
| DE10052146A1 (en) * | 2000-10-20 | 2002-05-08 | Bosch Gmbh Robert | Fuel injector |
| FR2857702B1 (en) * | 2003-07-16 | 2005-09-09 | Renault Sa | FUEL INJECTOR FOR CONTROLLABLE FLOW ENGINE |
| DE10341452A1 (en) * | 2003-09-09 | 2005-03-31 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engines |
| CN100385109C (en) * | 2005-01-18 | 2008-04-30 | 侯德洋 | Micro displacement variable cross-section uniform fine atomization combined type oil spout device |
| EP2098782A1 (en) | 2007-12-02 | 2009-09-09 | Beru Aktiengesellschaft | Device and method for operating flame ignition devices, exhaust gas purification devices of internal combustion engines (exhaust gas particulate filters) in particular for heavy goods vehicles, congeneration units or Stirling engines |
| DE102008014251A1 (en) * | 2008-03-13 | 2009-09-17 | Man Diesel Se | Injection valve for direct injection |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH165935A (en) * | 1931-11-14 | 1933-12-15 | Bosch Robert Ag | Injection device for internal combustion engines. |
| AT283059B (en) * | 1966-10-28 | 1970-07-27 | Bosch Gmbh Robert | Fuel injector |
| DE2711391A1 (en) * | 1977-03-16 | 1978-09-21 | Bosch Gmbh Robert | FUEL INJECTOR |
| DE2711393A1 (en) * | 1977-03-16 | 1978-09-21 | Bosch Gmbh Robert | FUEL INJECTOR |
| CH622588A5 (en) * | 1977-09-01 | 1981-04-15 | Sulzer Ag | |
| CH636409A5 (en) * | 1979-03-01 | 1983-05-31 | Sulzer Ag | Injection valve on a reciprocating piston internal combustion engine |
| DE2948451A1 (en) * | 1979-12-01 | 1981-06-04 | Robert Bosch Gmbh, 7000 Stuttgart | Fuel injector for IC engine - has push rod upstream of valve determining cross=section of injection openings |
-
1983
- 1983-03-26 DE DE19833311138 patent/DE3311138A1/en not_active Withdrawn
-
1984
- 1984-02-29 GB GB8405305A patent/GB2137280B/en not_active Expired
- 1984-03-12 FR FR8403753A patent/FR2543224A1/en active Pending
- 1984-03-23 JP JP5458884A patent/JPS59180063A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0527725A (en) * | 1991-07-23 | 1993-02-05 | Fujita Corp | Message output device |
| US6055957A (en) * | 1996-12-24 | 2000-05-02 | Zexel Corporation | Fuel injection control method using variable nozzle hole fuel injection nozzle |
| EP0853195A1 (en) | 1997-01-14 | 1998-07-15 | Zexel Corporation | Fuel injection nozzle |
| US5979802A (en) * | 1997-01-14 | 1999-11-09 | Zexel Corporation | Fuel injection nozzle |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2137280A (en) | 1984-10-03 |
| GB2137280B (en) | 1987-09-23 |
| FR2543224A1 (en) | 1984-09-28 |
| GB8405305D0 (en) | 1984-04-04 |
| DE3311138A1 (en) | 1984-10-04 |
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