JPH1089197A - Fuel injection valve for internal combustion engine - Google Patents
Fuel injection valve for internal combustion engineInfo
- Publication number
- JPH1089197A JPH1089197A JP25192297A JP25192297A JPH1089197A JP H1089197 A JPH1089197 A JP H1089197A JP 25192297 A JP25192297 A JP 25192297A JP 25192297 A JP25192297 A JP 25192297A JP H1089197 A JPH1089197 A JP H1089197A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- spring
- fuel injection
- injection valve
- fuel
- 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
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
- 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
- F02M45/083—Having two or more closing springs acting on injection-valve
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
【０００１】[0001]
【発明の属する技術分野】本発明は、内燃機関の燃料噴
射弁であって、弁体の穴内を軸方向に移動可能な弁部材
が備えられ、この弁部材が、その燃焼室側端部に弁シー
ル面を有し、この弁シール面を介し、弁部材が、弁体の
弁座面と協働して噴射横断面を制御し、かつまた、２個
の弁ばねが備えられ、これらの弁ばねが、閉弁位置で弁
部材に負荷を与え、弁保持体のばね室内に配置され、こ
れらの弁ばねのうちの第１の弁ばねが、常時、弁部材に
作用し、第２の弁ばねが、弁部材の一定送り距離通過後
に初めて弁部材に接触し、しかも、第１の弁ばねは、弁
座と反対側の端部のところのばね室を仕切る端壁に支え
られ、第２の弁ばねは、ばね室の縮径によって端壁の方
向へ形成された段状部に支えられている形式にものに関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel injection valve for an internal combustion engine, which is provided with a valve member which is movable in an axial direction in a hole of a valve body. A valve sealing surface, via which the valve member cooperates with the valve seat surface of the valve body to control the injection cross section and is provided with two valve springs, A valve spring loads the valve member in the closed position and is disposed within the spring chamber of the valve holder, wherein a first of the valve springs always acts on the valve member and a second one of the valve springs. The valve spring contacts the valve member only after passing through the fixed feed distance of the valve member, and the first valve spring is supported by an end wall partitioning a spring chamber at an end opposite to the valve seat. The second type of valve spring relates to a type which is supported by a step formed in the direction of the end wall by the reduced diameter of the spring chamber.
【０００２】[0002]
【従来の技術】ヨーロッパ特許第０２８２４８０号によ
り公知のこの形式の燃料噴射弁の場合、ピストン状の弁
部材が、弁体の孔内を軸方向に移動可能に案内され、弁
体の方は、燃料供給される内燃機関の燃焼室内へ突入し
ている。その場合、弁部材は、燃焼室側端部に弁シール
面を有し、この弁シール面を介して、弁部材が、弁体の
弁シール面と協働して噴射横断面を制御する。弁シール
面から燃焼室に開口する個々の噴口が発している。弁部
材は、燃焼室とは反対側の端部が、２個の閉鎖ばねによ
り、弁座方向へ負荷されており、そのうちの第１の弁ば
ねは、常時、弁部材に密着し、第２の弁ばねは弁部材の
一定開弁行程距離を通過した後、初めて弁部材に接触す
る。弁ばねは、その場合、ばね室に挿入されており、ば
ね室は、弁体によって軸方向に締め付けられた弁保持体
内に設けられている。その場合、第１の弁ばね、すなわ
ち上位の弁ばねは、弁座と反対側の端部のところでばね
室を仕切る端壁に支えられ、ばねプレートと加圧ボルト
とを介して、常時、弁部材を閉弁位置へ加圧している。2. Description of the Related Art In the case of a fuel injection valve of this type, which is known from EP 0 282 480, a piston-like valve member is guided in an axially movable manner in a bore of a valve body, the valve body comprising: The fuel enters the combustion chamber of the internal combustion engine to which fuel is supplied. In this case, the valve member has a valve sealing surface at the end on the combustion chamber side, through which the valve member controls the injection cross section in cooperation with the valve sealing surface of the valve body. Individual injection ports are opened from the valve seal surface to the combustion chamber. The end of the valve member opposite to the combustion chamber is loaded in the valve seat direction by two closing springs, of which the first valve spring is always in close contact with the valve member, The valve spring contacts the valve member only after passing through a certain valve opening stroke distance of the valve member. The valve spring is then inserted into a spring chamber, which is provided in a valve holder which is fastened axially by a valve body. In this case, the first valve spring, that is, the upper valve spring, is supported by an end wall that partitions the spring chamber at an end opposite to the valve seat, and is always connected to the valve via the spring plate and the pressure bolt. The member is pressurized to the closed position.
【０００３】第２の弁ばねは、加圧片を介して弁部材を
加圧する。加圧片は、弁部材が弁座に密接している場合
には、中間板の端面によって捕捉され、予備行程を通過
したに後に初めて、弁部材を閉弁位置へ加圧する。この
第２の弁ばねは、その場合、調節板と案内板とを挟みつ
けながら、円筒形ばね室壁の段状部に支えられている。
この段状部は、上方端壁の方向への縮径部によって形成
されている。[0003] The second valve spring presses the valve member via the pressing piece. When the valve member is in close contact with the valve seat, the pressing piece presses the valve member to the closed position only after passing through the preliminary stroke, being captured by the end face of the intermediate plate. In this case, the second valve spring is supported by the stepped portion of the wall of the cylindrical spring chamber while sandwiching the adjustment plate and the guide plate.
The step portion is formed by a reduced diameter portion in the direction of the upper end wall.
【０００４】この公知燃料噴射弁は、次の欠点を有して
いる。すなわち、弁保持体のハウジング内へ高い保持力
を導入し、しかも高い疲れ強さを得るためには、第２弁
ばねの支持面として働く段状部を、半径方向に比較的長
く延在するように構成せねばならない点である。しか
も、弁保持体外径が所定のままで、このようにばね室を
広く拡径すると、残る壁厚は、薄手になり、この区域に
延びる燃料供給通路の高い燃料圧力に耐えられなくな
る。[0004] This known fuel injector has the following disadvantages. That is, in order to introduce a high holding force into the housing of the valve holding body and obtain a high fatigue strength, the stepped portion serving as the support surface of the second valve spring extends relatively long in the radial direction. This is the point that must be configured. In addition, if the spring chamber is widened in this way while the outer diameter of the valve holder is kept at a predetermined value, the remaining wall thickness becomes thin, and the fuel supply passage extending to this area cannot withstand high fuel pressure.
【０００５】[0005]
【発明の効果】本発明による、内燃機関用の燃料噴射弁
は、第２弁ばねの支持面として機能する段状部が斜めに
構成され、従来の燃料噴射弁に比して、次の利点を有し
ている。すなわち、第２弁ばねの支持面に傾斜を設ける
ことによって、弁保持体の、硬化処理されていないハウ
ジング内への力の導入が改善される点である。このよう
にして、ばね室壁部での直径の急激な変化を小さくする
ことで、残る壁厚が、公知噴射弁に比して厚くできる。
したがって、弁保持体内での、製造に好都合な中心位置
にばね室を維持しながら、燃料通路を取囲む壁厚は、き
わめて高い燃料圧にも十分に耐えられるだけ厚くするこ
とができる。The fuel injection valve for an internal combustion engine according to the present invention has a stepped portion which functions as a support surface for the second valve spring, which is formed obliquely, and has the following advantages over the conventional fuel injection valve. have. That is, by providing the support surface of the second valve spring with an inclination, the introduction of force into the unhardened housing of the valve holder is improved. In this way, by reducing the sudden change in the diameter at the spring chamber wall, the remaining wall thickness can be increased as compared with the known injection valve.
Thus, the wall thickness surrounding the fuel passage can be made thick enough to withstand very high fuel pressures, while maintaining the spring chamber in a convenient central location within the valve holder.
【０００６】第２弁ばねの支持面を拡大するために、加
えて、有利には、支持リングをばね室内へ挿入し、この
支持リングが、傾斜をつけた段状部に密接し、半径方向
内側へ突入するようにする。その場合、加圧ボルト用の
中心貫通穴を有するこの支持リングは、ハウジングとの
接触面が、段状部と相補的な傾斜を有するように構成さ
れる。ハウジングの段状部の面取り部と支持リングの対
応面取り部とは、有利には６０°の角度をなし、これに
よって、ばね室壁の直径変化を出来るだけ小さく抑えな
がら、ハウジング内への力の導入が特に好都合にされ
る。しかし、別の面取り角度も可能であり、また段状部
へ直接に弁ばねを接触させることも可能である。[0006] In order to enlarge the support surface of the second valve spring, it is also advantageous to insert a support ring into the spring chamber, the support ring being in close contact with the inclined step and having a radial direction. Try to rush inside. In this case, this support ring with a central through hole for the pressure bolt is configured such that the contact surface with the housing has a slope that is complementary to the step. The chamfer of the step of the housing and the corresponding chamfer of the support ring are advantageously at an angle of 60 °, so that the change in the diameter of the spring chamber wall can be kept as small as possible, while the force in the housing is reduced. The introduction is particularly advantageous. However, other chamfer angles are possible and it is also possible to bring the valve spring directly into contact with the step.
【０００７】弁ばね支持の、本発明による構成の別の重
要な利点は、ばねホールダの取外しが可能なことであ
る。組付け状態では、面取り部を設けることで、ばねの
予圧による負荷を受けて、支持リングのセルフロック効
果が生じる。この効果により、支持リングは、回動を防
止され、その上、摩耗を最小化される。Another important advantage of the design according to the invention of the valve spring support is that the spring holder can be removed. In the assembled state, by providing the chamfer, the self-locking effect of the support ring is generated by receiving the load due to the preload of the spring. Due to this effect, the support ring is prevented from turning and, furthermore, wear is minimized.
【０００８】支持リングは、その場合、有利には硬化処
理され、そのため、より軟質な弁保持体より高い強度を
有する結果、ばねの支持面の摩耗を低減できる。第２弁
ばねのばね予圧力の調節は、その場合、さらに、ばねプ
レートと支持リングとの間に挟み付けられる調節板を介
して行うことが出来る。[0008] The support ring is then advantageously hardened, so that it has a higher strength than a softer valve carrier, so that the wear on the support surface of the spring can be reduced. The adjustment of the spring preload of the second valve spring can then be effected via an adjusting plate which is clamped between the spring plate and the support ring.
【０００９】本発明の客体のこのほかの利点及び有利な
構成は、図面についての説明及び各請求項の記載から知
ることが出来よう。Further advantages and advantageous configurations of the object according to the invention can be gleaned from the description of the drawings and the claims.
【００１０】[0010]
【発明の実施の形態】以下で、本発明の内燃機関燃料噴
射弁の一実施例を、添付図面につき詳細に説明する。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a fuel injection valve of an internal combustion engine according to an embodiment of the present invention.
【００１１】図１に示した実施例では、図示されていな
い内燃機関燃焼室内へ自由端が突入している弁体１が、
軸方向孔３を有している。軸方向孔３内を、ピストン状
弁部材５が軸方向に移動可能に案内されている。弁部材
５は、燃焼室側端部に、詳しくは図示されていない弁シ
ール面を有している。弁部材は、このシール面を介し
て、弁体１の、同じく詳しくは図示されていない弁シー
ル面と、公知の形式で協働して、噴射横断面を制御す
る。その場合、形成されるシール座の下流で、噴口７が
弁座面から発している。これらの噴口７は、内燃機関燃
焼室内に開口している。弁体１は、燃焼室側端部が、締
付けナット９を介して弁保持体１１に対して軸方向に締
付けられている。そのさい、弁体１の平らな端面と、弁
保持体１１との間には、中間板１３が挟み付けられてい
る。この中間板は、中心貫通穴を有し、この中心貫通穴
に、弁部材５の縮径された軸部１５が突入するが、弁座
への弁部材５の密接時に、中間板１３の、弁保持体１１
側の上端面１７まで間隙Ｓが残るようにされている。弁
部材軸部１５の自由端側には、加圧ピン１９が、軸方向
で密接している。加圧ピン１９は、弁保持体１１内に設
けられた円筒形ばね室２１内へ突入し、弁部材５と反対
側の加圧ピン上端は、ばねプレート２３を介して、第１
弁ばね２５によって弁部材５方向へ加圧される。常時、
閉弁方向へ弁座へ向かって弁部材５を加圧するこの第１
弁ばね２５は、弁座と反対側の端部のところでばね室２
１を仕切る端壁２７に支えられている。そのさい、第１
弁ばね２５のばね予圧力を、したがって噴射弁の開弁力
または開弁時点を調節するため、第１調節板２９が端壁
２７と第１弁ばね２５との間に挿入されている。弁部材
５の２段階開弁行程のために、さらに第２弁ばね３１
を、第１弁ばねの下方に、第１弁ばねと直列にばね室内
へ配置しておく。この第２弁ばね３１は、弁体１側の下
端部が、軸方向移動可能に加圧ピン１９上に配置された
加圧片３３に密接している。加圧片３３は、弁部材５が
弁座に密接している時には、第２弁ばね３１によって、
中間板１３の上端面１７に接触保持され、弁部材５が開
弁方向へ前行程距離（区間Ｓ）を通過した後、初めて弁
部材軸部１５の端面に作用し、この時点から、第１弁ば
ね２５に加えて、弁部材５を閉弁方向へ加圧する。In the embodiment shown in FIG. 1, a valve body 1 having a free end protruding into a combustion chamber (not shown) of an internal combustion engine is provided.
It has an axial hole 3. The piston-shaped valve member 5 is guided in the axial hole 3 so as to be movable in the axial direction. The valve member 5 has a valve seal surface (not shown in detail) at a combustion chamber side end. Via this sealing surface, the valve member cooperates in a known manner with the valve sealing surface, also not shown in more detail, of the valve body 1 to control the injection cross section. In that case, downstream of the seal seat to be formed, the injection port 7 emanates from the valve seat surface. These injection ports 7 open into the combustion chamber of the internal combustion engine. The combustion chamber side end of the valve element 1 is axially fastened to the valve holder 11 via a fastening nut 9. At that time, an intermediate plate 13 is sandwiched between the flat end surface of the valve body 1 and the valve holder 11. The intermediate plate has a central through hole, into which the reduced diameter shaft portion 15 of the valve member 5 protrudes. When the valve member 5 comes into close contact with the valve seat, the intermediate plate 13 Valve holder 11
The gap S is left to the upper end face 17 on the side. On the free end side of the valve member shaft portion 15, a pressure pin 19 is in close contact in the axial direction. The pressurizing pin 19 protrudes into a cylindrical spring chamber 21 provided in the valve holder 11, and the upper end of the pressurizing pin on the opposite side to the valve member 5 is connected to the first through a spring plate 23.
Pressure is applied to the valve member 5 by the valve spring 25. At all times
This first pressure is applied to the valve member 5 toward the valve seat in the valve closing direction.
The valve spring 25 is provided at the end opposite to the valve seat in the spring chamber 2.
1 is supported by an end wall 27 partitioning the first end. In that case, the first
A first adjusting plate 29 is inserted between the end wall 27 and the first valve spring 25 in order to adjust the spring preload of the valve spring 25 and thus the opening force or opening time of the injection valve. Due to the two-stage opening stroke of the valve member 5, a second valve spring 31 is also provided.
Is arranged below the first valve spring in series with the first valve spring into the spring chamber. The lower end of the second valve spring 31 on the valve body 1 side is in close contact with a pressing piece 33 disposed on the pressing pin 19 so as to be movable in the axial direction. When the valve member 5 is in close contact with the valve seat, the pressure piece 33 is actuated by the second valve spring 31.
It is held in contact with the upper end face 17 of the intermediate plate 13 and acts on the end face of the valve member shaft 15 for the first time after the valve member 5 has passed the previous stroke distance (section S) in the valve opening direction. In addition to the valve spring 25, the valve member 5 is pressed in the valve closing direction.
【００１２】第２弁ばね３１は、弁体１と反対の側で
は、ばね室２１の縮径によって上端壁２７の方向へ形成
されるハウジング壁段状部３５のところに支えられてい
る。段状部３５は、図２の部分拡大図で示したように、
斜めに構成され、しかも、形成されている面取り部は、
６０°の角度を有している。その場合、拡大されたばね
支持面用に、支持リング３７が、段状部３５に密接配置
されている。支持リング３７の周面は、段状部３５と相
補的に６０°の角度に面取りされ、中心貫通穴を有し、
この貫通穴を加圧ピン１９が遊びをもって貫通してい
る。第２弁ばね３１の予圧力を調節するためには、加え
て、第２調節板３９が、支持リング３７の、段状部３５
と反対側の平らな端面と、第２弁ばね３１との間に挟み
付けられている。この場合、弁座への高圧下の燃料の供
給は、公知の形式で、弁保持体１１と、中間板１３と、
弁体１とを軸方向に貫通している燃料通路４１を介して
行われる。燃料通路４１は、流入側が、燃料高圧ポンプ
から出ている噴射管に接続されている。その場合、第２
弁ばね３１の対応受けを形成する段状部３５を傾斜構成
にすることにより、ばね室の直径の急激な変化が避けら
れ、その結果、燃料通路を取囲む残りの、弁保持体１１
の壁厚は、燃料通路４１内部の高い燃料圧を十分に耐え
ることができる。The second valve spring 31 is supported on the side opposite to the valve element 1 at a housing wall step 35 formed in the direction of the upper end wall 27 by the reduced diameter of the spring chamber 21. As shown in the partially enlarged view of FIG.
The chamfer that is configured diagonally and that is formed is
It has an angle of 60 °. In that case, a support ring 37 is arranged close to the step 35 for the enlarged spring support surface. The peripheral surface of the support ring 37 is chamfered at an angle of 60 ° complementarily to the stepped portion 35, has a central through hole,
The pressure pin 19 passes through this through hole with play. In order to adjust the preload of the second valve spring 31, the second adjusting plate 39 is additionally provided with a stepped portion 35 of the support ring 37.
Between the second valve spring 31 and the flat end face on the opposite side. In this case, the supply of fuel under high pressure to the valve seat is performed in a known manner by using a valve holder 11, an intermediate plate 13,
This is performed via a fuel passage 41 that passes through the valve body 1 in the axial direction. The fuel passage 41 has an inflow side connected to an injection pipe coming out of a high-pressure fuel pump. In that case, the second
By making the stepped portion 35 forming the corresponding receiver of the valve spring 31 inclined, it is possible to avoid a sudden change in the diameter of the spring chamber, and as a result, the remaining valve holder 11 surrounding the fuel passage
Can sufficiently withstand the high fuel pressure inside the fuel passage 41.
【図１】燃料噴射弁の略示縦断面図である。FIG. 1 is a schematic vertical sectional view of a fuel injection valve.
【図２】ばね室壁の傾斜直径移行部の部分拡大図であ
る。FIG. 2 is a partially enlarged view of an inclined diameter transition portion of a spring chamber wall.
【図３】面取り部を有する支持リング縦断面図である。FIG. 3 is a longitudinal sectional view of a support ring having a chamfer.
１ 弁体、 ３ 弁体の軸方向孔、 ５ 弁部材、 ７
噴口、 ９ 締付けナット、 １１ 弁保持体、 １
３ 中間板、 １５ 弁部材軸部、 １７ 中間板の上
端面、 １９ 加圧ピン、 ２１ ばね室、 ２３ ば
ねプレート、２５ 第１弁ばね、 ２７ 端壁、 ２９
調節板、 ３１ 弁ばね、 ３３加圧片、 ３５ 段
状部、 ３７ 支持リング、 ４１ 燃料通路1 valve body, 3 axial hole of valve body, 5 valve member, 7
Nozzle, 9 tightening nut, 11 valve holder, 1
Reference Signs List 3 intermediate plate, 15 valve member shaft, 17 upper end surface of intermediate plate, 19 pressure pin, 21 spring chamber, 23 spring plate, 25 first valve spring, 27 end wall, 29
Adjusting plate, 31 Valve spring, 33 Pressure piece, 35 Stepped part, 37 Support ring, 41 Fuel passage
Claims (5)
（１）の穴（３）内を軸方向に移動可能な弁部材（５）
が備えられ、この弁部材（５）が、その燃焼室側端部に
弁シール面を有し、この弁シール面を介し、弁部材
（５）が、弁体（１）の弁座面と協働して噴射横断面を
制御し、かつまた、２個の弁ばねが備えられ、これらの
弁ばねが、閉弁位置で弁部材に負荷を与え、弁保持体
（１１）のばね室（２１）内に配置され、これらの弁ば
ねのうちの第１の弁ばね（２５）が、常時、弁部材
（５）に作用し、第２の弁ばね（３１）が、弁部材
（５）の一定送り距離通過（Ｓ）後に初めて弁部材
（５）に接触し、しかも、第１の弁ばね（２５）は、弁
座と反対側の端部のところのばね室（２１）を仕切る端
壁（２７）に支えられ、第２の弁ばね（３１）は、ばね
室（２１）の縮径によって端壁（２７）の方向へ形成さ
れた段状部（３５）に支えられている形式にものにおい
て、 第２弁ばね（３１）の支持面として機能する段状部（３
５）を、斜めに構成したことを特徴とする、内燃機関の
燃料噴射弁。1. A fuel injection valve for an internal combustion engine, comprising: a valve member (5) movable axially in a hole (3) of a valve body (1).
The valve member (5) has a valve seal surface at the end portion on the combustion chamber side, and the valve member (5) is connected to the valve seat surface of the valve body (1) through the valve seal surface. It cooperates to control the injection cross-section and is also provided with two valve springs, which load the valve member in the closed position and provide a spring chamber (11) of the valve holder (11). 21), the first of these valve springs (25) always acting on the valve member (5), the second valve spring (31) being the valve member (5) Only after passing through a certain feed distance (S) of the valve member (5), the first valve spring (25) separates the spring chamber (21) at the end opposite to the valve seat. Supported by the wall (27), the second valve spring (31) is supported by a step (35) formed in the direction of the end wall (27) by the reduced diameter of the spring chamber (21). In things to formula, stepped portions which functions as a support surface of the second valve spring (31) (3
(5) A fuel injection valve for an internal combustion engine, wherein the fuel injection valve is formed obliquely.
た面取り部が、弁の縦軸線に対し６０°の角度を有して
いる、請求項１記載の燃料噴射弁。2. The fuel injection valve according to claim 1, wherein the chamfer provided on the step of the support surface of the valve spring has an angle of 60 ° with respect to the longitudinal axis of the valve.
が密着しており、この支持リング（３７）が、第２のば
ね（３１）によって段状部（３５）に接触保持され、半
径方向外周面が角を落とされて、段状部（３５）の傾斜
面に相補的に密着している、請求項１記載の燃料噴射
弁。3. A support ring (37) on the step (35).
The support ring (37) is held in contact with the step portion (35) by the second spring (31), and the outer peripheral surface in the radial direction is cut off at the corner to form the step portion (35). The fuel injection valve according to claim 1, wherein the fuel injection valve complementarily contacts the inclined surface of the fuel injection valve.
を内包する弁保持体（１１）より高い強度を有してい
る、請求項３記載の燃料噴射弁。4. The support ring (37) includes a spring chamber (21).
4. The fuel injection valve according to claim 3, wherein the fuel injection valve has a higher strength than the valve holder (11) containing the fuel injection valve.
１）との間に、調節板（３９）が挟みつけられている、
請求項３記載の燃料噴射弁。5. A support ring (37) and a second valve spring (3).
An adjustment plate (39) is sandwiched between 1) and
The fuel injection valve according to claim 3.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1996138339 DE19638339B4 (en) | 1996-09-19 | 1996-09-19 | Fuel injection valve for internal combustion engines |
| DE19638339.0 | 1996-09-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1089197A true JPH1089197A (en) | 1998-04-07 |
| JP3943203B2 JP3943203B2 (en) | 2007-07-11 |
Family
ID=7806193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25192297A Expired - Fee Related JP3943203B2 (en) | 1996-09-19 | 1997-09-17 | Fuel injection valve for internal combustion engine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3943203B2 (en) |
| DE (1) | DE19638339B4 (en) |
| GB (1) | GB2317419B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19919665A1 (en) * | 1999-04-29 | 2000-11-02 | Volkswagen Ag | Fuel injector |
| GB0000909D0 (en) * | 2000-01-14 | 2000-03-08 | Delphi Diesel Systems Ltd | Workpiece |
| DE10154576C1 (en) * | 2001-11-07 | 2003-04-17 | Bosch Gmbh Robert | Fuel injector for direct fuel injection IC engine has control space for operation of jet needle vented under control of magnetic valve positioned above control space within injector body |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4034914A (en) * | 1976-03-22 | 1977-07-12 | Caterpillar Tractor Co. | Accumulator fuel nozzle with dump valve |
| JPS57186657U (en) * | 1981-05-25 | 1982-11-26 | ||
| DE3610658A1 (en) * | 1985-11-21 | 1987-05-27 | Bosch Gmbh Robert | FUEL INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES |
| DE3839036A1 (en) * | 1988-11-18 | 1990-05-23 | Bosch Gmbh Robert | FUEL INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES |
| DE3839038A1 (en) * | 1988-11-18 | 1990-05-23 | Bosch Gmbh Robert | FUEL INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES |
-
1996
- 1996-09-19 DE DE1996138339 patent/DE19638339B4/en not_active Expired - Fee Related
-
1997
- 1997-08-21 GB GB9717630A patent/GB2317419B/en not_active Expired - Fee Related
- 1997-09-17 JP JP25192297A patent/JP3943203B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3943203B2 (en) | 2007-07-11 |
| GB2317419B (en) | 1998-10-07 |
| GB9717630D0 (en) | 1997-10-22 |
| DE19638339B4 (en) | 2008-10-02 |
| GB2317419A (en) | 1998-03-25 |
| DE19638339A1 (en) | 1998-03-26 |
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