EP1114249B1 - Brennstoffeinspritzventil - Google Patents
Brennstoffeinspritzventil Download PDFInfo
- Publication number
- EP1114249B1 EP1114249B1 EP00951262A EP00951262A EP1114249B1 EP 1114249 B1 EP1114249 B1 EP 1114249B1 EP 00951262 A EP00951262 A EP 00951262A EP 00951262 A EP00951262 A EP 00951262A EP 1114249 B1 EP1114249 B1 EP 1114249B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel injection
- valve
- injection valve
- connection part
- valve according
- 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.)
- Expired - Lifetime
Links
Images
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
-
- 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
- F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
- F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
Definitions
- the invention is based on a fuel injector according to the genus of the main claim.
- a Fuel injector known to be very slim is executed, for example, with the spray side Valve end in an intake manifold of an internal combustion engine protrude.
- the electromagnetically actuated valve is characterized by the fact that both a valve seat support as well as a valve needle are elongated. So the spray point of the valve is set far ahead, with which a very targeted spraying is possible.
- a den Anchor and connecting the valve closing body The connecting part of the valve needle is a stamped-bent part executed and has most of its axial Extend an open, circular cross-section deviating profile.
- the valve seat support is as sleeve-shaped, thin-walled component.
- EP 0 690 224 A1 describes a fuel injection valve known that has a nozzle opening, which in the built Condition of the valve already inside an intake duct lies so that avoiding wall wetting Hosing largely directly onto an inlet valve Internal combustion engine is possible.
- the fuel injector according to the invention with the characteristic features of the main claim has the Advantage that a simple and inexpensive increased rigidity compared to the known elongated Valves is achieved.
- a Distortion or kinking of the spray side Valve end prevented.
- the valve end has a high Resilience against bending and kinking.
- By the increased Strength of the thin-walled valve seat bracket Connecting part of the invention Fuel injector it is possible to use one Fuel injector also compared to the Intake manifold injection to operate higher system pressures.
- the fuel injector according to the invention is suitable therefore especially as a so-called Direct fuel injection valve for direct injection of Fuel in a combustion chamber of a mixture compression spark ignition internal combustion engine.
- connection part It is particularly advantageous to cover the scope of the Connection part several longitudinal recesses in Form the shape of longitudinal beads.
- Embodiments of the invention are in the drawing shown in simplified form and in the following Description explained in more detail.
- 1 shows a first Embodiment of a designed according to the invention Valve
- Figure 2 shows a second embodiment of a 3 designed a valve Section through the valve seat support along the line III-III in Figure 1 and Figure 2.
- the electromagnetic part shown in Figure 1 actuatable valve in the form of a Fuel injection valve for fuel injection systems of mixture-compressing, spark-ignited Internal combustion engines are particularly suitable for direct Injecting fuel into a not shown Combustion chamber.
- the fuel injector has one of one Magnetic coil 1 surrounding tubular core 2 as a so-called Pole.
- a bobbin 3 takes a winding Magnetic coil 1 and allows in connection with the core 2 a particularly compact structure of the injection valve in the Magnetic coil area 1.
- excitable actuators are also suitable instead of an electromagnetic circuit Piezo actuators or magnetostrictive actuators.
- a valve longitudinal axis 10 With a lower core end 9 of the core 2 is concentric a valve longitudinal axis 10 tightly a tubular metal Intermediate part 12 connected, for example, by welding and partially surrounds the core end 9 axially. Downstream of the Coil body 3 and the intermediate part 12 extends inventive tubular valve seat support 16, the for example, is firmly connected to the intermediate part 12.
- inventive tubular valve seat support 16 In the serving as a connector and a tubular and thin-walled sleeve valve seat support 16 extends a longitudinal opening 18.
- a e.g. rod-shaped valve needle 19 which at its downstream End has a valve closing section 21, arranged.
- the injection valve is actuated in a known manner Way e.g. electromagnetically.
- a return spring 25 or closing the injection valve serves the electromagnetic circuit with the magnetic coil 1, the core 2 and an anchor 26.
- the anchor 26 is with the Valve closing section 21 facing away from the end of the valve needle 19 connected by a weld seam and onto the core 2 aligned.
- opposite end of the valve seat support 16 is in the Longitudinal opening 18 through a guide and seat unit Welding tightly assembled.
- This guide and seat unit comprises three disk-shaped Elements that face each other directly lie.
- a guide element 27, a swirl element 28 and a Valve seat element 29 follow each other in the downstream direction.
- the valve seat element 29 projects with a stepped outer contour only partially into the longitudinal opening 18 into it.
- the valve seat element 29 firmly and tightly with the Valve seat support 16 on its downstream end face connected.
- the guide element 27, the swirl element 28 and the valve seat element 29 are also fixed to one another connected, with a weld on the outer circumference of the offers three elements 27, 28 and 29.
- a guide opening serves along the longitudinal valve axis 10 of the intermediate part 12 and a guide opening in Guide element 27.
- the downstream e.g. conical tapered valve closing section 21 acts with a tapered in the direction of flow Valve seat surface 32 of the valve seat element 29 together.
- the illustrated embodiment is the outlet opening 33 inclined to the valve longitudinal axis 10, which in a convex spray area of the Valve seat element 29 ends.
- the outlet opening 33 fuel flowing through is swirling, because it in front of the Valve seat surface 32 in the swirl element 28 in which for example, several tangential swirl channels are provided, an atomization-improving Swirl component is impressed.
- valve needle 19 An end position of the valve needle 19 is when it is not excited Solenoid 1 through the installation of the valve closing section 21 fixed to the valve seat surface 32 while the other end position of the valve needle 19 when excited Magnetic coil 1 by the armature 26 resting on the core end 9 of core 2 results.
- the magnet coil 1 is one Cup-shaped valve housing 35 surround the so-called External pole serves. With its valve seat element 29 facing lower end, the valve housing 35 is firmly on the valve seat support 16 e.g. by means of a weld seam applied.
- valve seat carrier 16 encloses this axially movable valve part consisting of armature 26 and valve needle 19 with the valve closing section 21 and partially Management and seating unit.
- the valve seat support 16 is elongated, the valve seat support 16 even half or more of the total axial Extension length of the injector can make up. With this design of the valve seat support 16 can Injection point of the injection valve can be set far ahead what is due to certain internal combustion engines idiosyncratic design and limited installation space may be desirable.
- the Fuel injection valve as a direct injection valve can the spray point optimally to a desired location of the Combustion chamber.
- Valve seat support 16 By using the relatively cheap sleeve for the Valve seat support 16 it becomes possible to in Injector valves usual turned parts, due to their larger outer diameter more voluminous and at the Manufacturing are more expensive than the valve seat support 16, too dispense.
- a Fuel injector with an elongated thin-walled valve seat support 16 there is a certain Risk of bending or kinking the spray side Valve end.
- Valve seat support 16 With the training of the invention Valve seat support 16, the rigidity is increased, so that in advantageously twisting or kinking the spray-side valve end is prevented.
- the valve seat support 16 has a number of circumferences distributed shapes that increase rigidity of longitudinal beads 38 on.
- Figure 3 shows a sectional view a section along the line III-III in Figure 1
- the axially extending longitudinal beads 38 are e.g. introduced at a distance of 120 ° from each other. A smaller or larger number of is also conceivable Longitudinal beads 38.
- the longitudinal beads 38 face the actual sleeve shape represents recessed formations that over a considerable part (e.g. as in Figures 1 and 2 represented over approx. 50%) of the axial extension length of the Valve seat support 16 can run.
- the valve seat support 16 is on the one hand by deep drawing producible or on the other hand from a tube through a Forming process.
- a tubular Starting body come e.g. hydromechanical or hydrostatic forming processes in question.
- Magnetic forming is the desired shape of the Valve seat support 16 achievable.
- sealing element 41 is used for Seal between the circumference of the injector and a valve seat, not shown, in the cylinder head or on an intake line of the internal combustion engine.
- the Sealing element 41 is e.g. made of a plastic, such as PTFE manufactured.
- the radial depth of the groove 40 corresponds for example the depth of the longitudinal beads 38.
- FIG 2 is a second embodiment of a Fuel injector shown that essentially coincides with the valve shown in Figure 1. in the only the differences are explained below.
- the Valve housing 35 is pot-shaped in this embodiment trained that it is not directly on the valve seat support 16 is present. Rather, below the solenoid 1 is a Magnetic flux closing bottom part 43 is provided with the both the valve housing 35 and the valve seat support 16 is firmly connected.
- the armature 26 is axial, for example movable on the valve needle 19 between an upper and a lower needle-fixed stop 44 and 45 are arranged. to Avoiding the bouncing of the valve needle 19 when closing of the valve is e.g. between anchor 26 and the lower one Stop 45 introduced a damping element.
- the guide and seat unit is also minor modified.
- the guide element 27, the Swirl element 28 and also the valve seat element 29 completely arranged within the longitudinal opening 18.
- Downstream of the valve seat member 29 is a disk-shaped spray body 46 is provided.
- the spray body 46 has the outlet opening 33 on.
- the spray body 46 and the valve seat element 29 are e.g. via a weld seam achieved by means of laser welding firmly connected, the welding in one annular circumferential recess 47 is made.
- the Spray body 46 is also fixed by a weld connected to the valve seat support 16.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
Description
Claims (9)
- Brennstoffeinspritzventil mit einem Brennstoffeinlass, mit einer erregbaren Betätigungseinrichtung (1, 2, 26, 35), durch die ein Ventilschließglied (21) bewegbar ist, mit einem an einem Ventilsitzelement (29) ausgebildeten festen Ventilsitz (32), mit dem das Ventilschließglied (21) zum Öffnen und Schließen des Ventils zusammenwirkt, mit einem stromabwärts des Ventilsitzes (32) vorgesehenen Brennstoffauslass (33), und mit einem eine innere Längsöffnung (18) aufweisenden und das Ventilsitzelement (29) aufnehmenden hülsenförmigen Anschlussteil (16), dadurch gekennzeichnet, dass das Anschlussteil (16) die Steifigkeit erhöhende Ausformungen (38) in Form von längs verlaufenden Vertiefungen aufweist.
- Brennstoffeinspritzventil nach Anspruch 1, dadurch gekennzeichnet, dass das Anschlussteil (16) einen weitgehend kreisringförmigen Querschnitt hat, wobei die Ausformungen (38) vom kreisförmigen Umfang ausgehend vertieft sind.
- Brennstoffeinspritzventil nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass über den Umfang des Anschlussteils (16) mehr als eine Ausformung (38) eingebracht ist.
- Brennstoffeinspritzventil nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Ausformungen als Längssicken (38) ausgebildet sind.
- Brennstoffeinspritzventil nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Anschlussteil (16) durch Tiefziehen ausformbar ist.
- Brennstoffeinspritzventil nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Anschlussteil (16) aus einem Rohr durch hydromechanisches oder hydrostatisches Umformen ausformbar ist.
- Brennstoffeinspritzventil nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Anschlussteil (16) aus einem Rohr durch Magnetumformen ausformbar ist.
- Brennstoffeinspritzventil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Anschlussteil (16) aus einem ferritischen, den Magnetfluss leitenden Material besteht.
- Brennstoffeinspritzventil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sich die Ausformungen (38) über etwa die Hälfte der axialen Erstreckungslänge des Anschlussteils (16) erstrecken.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19932763A DE19932763A1 (de) | 1999-07-14 | 1999-07-14 | Brennstoffeinspritzventil |
DE19932763 | 1999-07-14 | ||
PCT/DE2000/002277 WO2001006113A1 (de) | 1999-07-14 | 2000-07-13 | Brennstoffeinspritzventil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1114249A1 EP1114249A1 (de) | 2001-07-11 |
EP1114249B1 true EP1114249B1 (de) | 2004-10-06 |
Family
ID=7914650
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00951262A Expired - Lifetime EP1114249B1 (de) | 1999-07-14 | 2000-07-13 | Brennstoffeinspritzventil |
Country Status (6)
Country | Link |
---|---|
US (1) | US6494389B1 (de) |
EP (1) | EP1114249B1 (de) |
JP (1) | JP2003504558A (de) |
CN (1) | CN1127615C (de) |
DE (2) | DE19932763A1 (de) |
WO (1) | WO2001006113A1 (de) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19947779A1 (de) * | 1999-10-02 | 2001-04-12 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
JP3799599B2 (ja) * | 2001-02-26 | 2006-07-19 | 株式会社デンソー | 溶接装置および溶接方法 |
DE10153142A1 (de) * | 2001-10-27 | 2003-05-22 | Itw Oberflaechentechnik Gmbh | Ventilnadel, insbesondere für Spritzbeschichtungsflüssigkeit |
DE10200044A1 (de) * | 2002-01-03 | 2003-07-24 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
JP3884310B2 (ja) * | 2002-03-22 | 2007-02-21 | 愛三工業株式会社 | 電磁式燃料噴射弁 |
DE10226649A1 (de) * | 2002-06-14 | 2004-01-08 | Siemens Ag | Dosiervorrichtung für Fluide, insbesondere Kraftfahrzeug-Einspritzventil |
DE102005019837A1 (de) * | 2005-04-28 | 2006-11-02 | Robert Bosch Gmbh | Brennstoffeinspritzventil und Verfahren zu dessen Montage |
KR100706555B1 (ko) * | 2006-04-20 | 2007-04-13 | 현대자동차주식회사 | 디젤엔진 인젝터 |
DE102008040108B9 (de) | 2008-07-03 | 2023-09-07 | Robert Bosch Gmbh | Ventil, insbesondere Einspritz- oder Dosierventil in Kraftstoffeinspritz- oder Abgasanlagen von Brennkraftmaschinen |
DE102008040843B4 (de) | 2008-07-29 | 2016-10-06 | Robert Bosch Gmbh | Ventil |
US7905425B2 (en) * | 2008-11-18 | 2011-03-15 | Continental Automotive Sytems US, Inc. | Modular outward opening solenoid direct fuel injector |
US7866301B2 (en) * | 2009-01-26 | 2011-01-11 | Caterpillar Inc. | Self-guided armature in single pole solenoid actuator assembly and fuel injector using same |
EP2375051A1 (de) * | 2010-04-09 | 2011-10-12 | Continental Automotive GmbH | Ventilanordnung für ein Einspritzventil und Einspritzventil |
DE102010030947A1 (de) | 2010-07-05 | 2012-01-05 | Robert Bosch Gmbh | Ventil für ein strömendes Medium |
DE102010030925A1 (de) | 2010-07-05 | 2012-01-05 | Robert Bosch Gmbh | Ventil für ein strömendes Medium |
DE102010041989A1 (de) | 2010-10-05 | 2012-04-05 | Robert Bosch Gmbh | Ventil für ein strömendes Medium |
JP5537472B2 (ja) | 2011-03-10 | 2014-07-02 | 日立オートモティブシステムズ株式会社 | 燃料噴射装置 |
DE102011006828A1 (de) | 2011-04-06 | 2012-10-11 | Robert Bosch Gmbh | Ventil zum Zumessen eines Mediums |
DE102012203607A1 (de) * | 2012-03-07 | 2013-09-12 | Robert Bosch Gmbh | Ventil zum Zumessen eines Fluids |
DE102012207406A1 (de) | 2012-05-04 | 2013-11-07 | Robert Bosch Gmbh | Ventil zum Zumessen von Fluid |
DE102012208136A1 (de) | 2012-05-15 | 2013-11-21 | Robert Bosch Gmbh | Ventil zum Zumessen von Fluid |
JP6063894B2 (ja) * | 2014-04-23 | 2017-01-18 | 日立オートモティブシステムズ株式会社 | 燃料噴射装置 |
CN107725243A (zh) * | 2017-11-24 | 2018-02-23 | 广西卡迪亚科技有限公司 | 一种单孔雾化喷油器及其后置雾化结构 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4552311A (en) | 1983-09-23 | 1985-11-12 | Allied Corporation | Low cost unitized fuel injection system |
DE3411337A1 (de) * | 1984-03-28 | 1985-10-10 | Robert Bosch Gmbh, 7000 Stuttgart | Kraftstoffeinspritzventil |
DE3418436A1 (de) * | 1984-05-18 | 1985-11-21 | Robert Bosch Gmbh, 7000 Stuttgart | Elektromagnetisch betaetigbares ventil und verfahren zur herstellung eines ventils |
DE3427526A1 (de) * | 1984-07-26 | 1986-02-06 | Robert Bosch Gmbh, 7000 Stuttgart | Elektromagnetisch betaetigbares ventil |
DE3522225A1 (de) * | 1985-06-21 | 1987-01-02 | Bosch Gmbh Robert | Kraftstoffeinspritzventil mit ausgleichsfeder |
US4946107A (en) * | 1988-11-29 | 1990-08-07 | Pacer Industries, Inc. | Electromagnetic fuel injection valve |
US5419297A (en) | 1994-06-28 | 1995-05-30 | Siemens Automotive L.P. | Extended tip gasoline port fuel injector |
DE19547406B4 (de) | 1995-12-19 | 2007-10-31 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE19632196B4 (de) | 1996-08-09 | 2004-11-04 | Robert Bosch Gmbh | Elektromagnetisch betätigbares Ventil |
-
1999
- 1999-07-14 DE DE19932763A patent/DE19932763A1/de not_active Withdrawn
-
2000
- 2000-07-13 DE DE50008091T patent/DE50008091D1/de not_active Expired - Fee Related
- 2000-07-13 EP EP00951262A patent/EP1114249B1/de not_active Expired - Lifetime
- 2000-07-13 WO PCT/DE2000/002277 patent/WO2001006113A1/de active IP Right Grant
- 2000-07-13 JP JP2001510720A patent/JP2003504558A/ja active Pending
- 2000-07-13 CN CN00801408A patent/CN1127615C/zh not_active Expired - Fee Related
- 2000-07-13 US US09/787,143 patent/US6494389B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2003504558A (ja) | 2003-02-04 |
EP1114249A1 (de) | 2001-07-11 |
DE19932763A1 (de) | 2001-01-18 |
DE50008091D1 (de) | 2004-11-11 |
US6494389B1 (en) | 2002-12-17 |
WO2001006113A1 (de) | 2001-01-25 |
CN1127615C (zh) | 2003-11-12 |
CN1318133A (zh) | 2001-10-17 |
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