EP1440239B1 - Fuel injection valve - Google Patents
Fuel injection valve Download PDFInfo
- Publication number
- EP1440239B1 EP1440239B1 EP02769885A EP02769885A EP1440239B1 EP 1440239 B1 EP1440239 B1 EP 1440239B1 EP 02769885 A EP02769885 A EP 02769885A EP 02769885 A EP02769885 A EP 02769885A EP 1440239 B1 EP1440239 B1 EP 1440239B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel injection
- valve
- injection valve
- fuel
- stroke
- 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
- 239000000446 fuel Substances 0.000 title claims description 52
- 238000002347 injection Methods 0.000 title claims description 36
- 239000007924 injection Substances 0.000 title claims description 36
- 238000002485 combustion reaction Methods 0.000 claims description 16
- 239000000203 mixture Substances 0.000 description 8
- 238000007789 sealing Methods 0.000 description 7
- 230000035515 penetration Effects 0.000 description 3
- 230000005284 excitation Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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
- 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
- F02M61/08—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 the valves opening in direction of fuel 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/0603—Injectors peculiar thereto with means directly operating the valve needle using piezoelectric or magnetostrictive operating 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
- 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
- F02M61/042—The valves being provided with fuel passages
Definitions
- the invention is based on a fuel injection valve according to the preamble of the main claim.
- an outward opening fuel injection valve known which a having conical sealing seat.
- the valve needle has a Central bore, which in a the sealing seat upstream pressure chamber opens.
- An actor who as piezoelectric actuator is designed supports on the one hand against a nozzle body and on the other hand against a non-positively connected to the valve needle Pressure shoulder off.
- a return spring holds the valve needle in a closed position. Upon excitation of the actuator is through Length extension thereof the valve needle against the closing force of the return spring opened and fuel hosed.
- a disadvantage of the known from DE 195 34 445 A1 Fuel injection valve is in particular that in the Combustion chamber of the internal combustion engine injected Fuel jet cone-shaped with a specific Opening angle ⁇ is.
- An injection under different Opening angle ⁇ which, for example, the different requirements for the shape of the mixture cloud in part-load and full load range, is hereby not possible.
- WO 01/11228 A1 describes a fuel injection valve after Preamble of claim 1.
- the fuel injection valve according to the invention with the characterizing features of the main claim has In contrast, the advantage that, depending on the stroke position of Valve needle a larger or smaller jet angle can be represented, according to the operating state of Internal combustion engine can be selected.
- Another advantage is that by means of appropriate shaping the downstream end of the fuel injection valve and corresponding to the valve closing body any desired Beam angle can be realized.
- a in Figs. 1 and 2 in two different stroke states illustrated embodiment of an inventive Fuel injection valve 1 is in the form of a Fuel injection valve 1 for fuel injection systems of mixture-compacting, externally ignited Internal combustion engine running.
- the Fuel injector 1 is particularly suitable for direct injection of fuel into one illustrated combustion chamber of an internal combustion engine.
- the fuel injection valve 1 consists of a Housing body 2 and a nozzle body 3, in which a Valve needle 4 is arranged.
- the valve needle 4 is available a valve closing body 5 in operative connection, with a Valve seat surface 6 cooperates to a sealing seat.
- Fuel injection valve 1 is in Embodiment by an outward opening Fuel injection valve 1.
- the fuel injection valve 1 has an actuator 7, which in the embodiment as piezoelectric actuator 7 is executed.
- the actuator supports on the one hand on the housing body 2 and on the other hand on a with the valve needle 4 operatively connected shoulder. 8 from. Downstream of the shoulder 8 is a return spring. 9 arranged, which in turn on the nozzle body. 3 supported.
- the valve needle 4 has a fuel passage 10, through which by a supply-side central Fuel supply 11 fed fuel to the sealing seat to be led.
- a Swirl chamber 12 is formed, in which the fuel passage 10th opens.
- a mixture-compressing, externally-ignited internal combustion engine places other demands on the shape, the stoichiometry and the penetration capacity of the mixture cloud injected into the combustion chamber in partial-load operation than in full-load operation.
- the mixture cloud as shown in Fig. 1, a relatively small opening angle ⁇ 1 , a large penetration capacity, due to the small opening angle ⁇ 1 narrow core area with a richer mixture and have a very lean shell.
- a large opening angle ⁇ 2 and thus a nearly homogeneous filling of the cylinder with zundpreparedem mixture is required.
- Fuel injector 1 defines two stroke states, whereby during operation different jet patterns can be displayed, which according to the operating condition the internal combustion engine can be selected.
- Fig. 1 shows the fuel injection valve 1 in a first stroke state.
- the valve closing body 5 has already lifted off from the valve seat surface 6, but only releases a gap 13 of small width between the valve closing body 5 and the valve seat surface 6.
- a fuel jet having a small opening angle ⁇ 1 can be represented, which has a large penetration capacity required for the stratified charge operation.
- a second stroke position of the fuel injection valve 1 is shown.
- the valve closing body 5 is now further away from the valve seat surface 6, so that the gap 13 is wider than in Fig. 1. Due to the Entrainment the flow outside of the injection jet of the gap 13, the sprayed fuel jet now applies to the valve closing body 5, which a relative to the longitudinal axis 16 of the fuel injection valve 1 has great inclination and thus leads to a strong expansion of the fuel jet.
- the opening angle ⁇ 2 is thus increased compared to the first stroke position, which is advantageous for the full load range of the internal combustion engine, since the entire combustion chamber is filled with a relatively homogeneous, stoichiometric mixture.
- the different stroke positions of the valve needle 4 can in simple way z. B. by the use of two separately controllable actuators 7 are approached.
- This can For example, a voltage-controlled or voltage-controlled piezoelectric actuator and two piezoelectric Be actuators 7, which are controlled sequentially.
- the use of two magnetic circuits with two separate coils or a two-part armature is conceivable.
- the beam angle ⁇ 1 and ⁇ 2 are selected so that the combustion chamber of the internal combustion engine can be optimally filled with an ignitable fuel-air mixture.
- the preparation of the inclined portion 15 and the valve seat surface 6 may, for example, in the manufacture of the nozzle body 3 z. B. by turning.
- the invention is not limited to that shown Embodiment limited and for any construction of fuel injection valves 1 with arbitrary actuators. 7 applicable.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Description
Die Erfindung geht aus von einem Brennstoffeinspritzventil nach der Gattung des Hauptanspruchs.The invention is based on a fuel injection valve according to the preamble of the main claim.
Beispielsweise ist aus der DE 195 34 445 A1 ein nach außen öffnendes Brennstoffeinspritzventil bekannt, welches einen kegeligen Dichtsitz aufweist. Die Ventilnadel weist eine Zentralbohrung auf, welche in eine dem Dichtsitz vorgelagerte Druckkammer mündet. Ein Aktor, der als piezoelektrischer Aktor ausgeführt ist, stützt sich einerseits gegen einen Düsenkörper und andererseits gegen eine mit der Ventilnadel kraftschlüssig verbundene Druckschulter ab. Eine Rückstellfeder hält die Ventilnadel in einer Schließstellung. Bei Erregung des Aktors wird durch Längenausdehnung desselben die Ventilnadel gegen die schließende Kraft der Rückstellfeder geöffnet und Brennstoff abgespritzt.For example, from DE 195 34 445 A1 an outward opening fuel injection valve known which a having conical sealing seat. The valve needle has a Central bore, which in a the sealing seat upstream pressure chamber opens. An actor who as piezoelectric actuator is designed, supports on the one hand against a nozzle body and on the other hand against a non-positively connected to the valve needle Pressure shoulder off. A return spring holds the valve needle in a closed position. Upon excitation of the actuator is through Length extension thereof the valve needle against the closing force of the return spring opened and fuel hosed.
Nachteilig bei dem aus der DE 195 34 445 A1 bekannten Brennstoffeinspritzventil ist insbesondere, daß der in den Brennraum der Brennkraftmaschine eingespritzte Brennstoffstrahl kegelförmig mit einem bestimmten Öffnungswinkel α ist. Eine Einspritzung unter verschiedenen Öffnungswinkeln α, welche beispielsweise den unterschiedlichen Anforderungen an die Form der Gemischwolke im Teillast- und Vollastbereich Rechnung trägt, ist hierbei nicht möglich.A disadvantage of the known from DE 195 34 445 A1 Fuel injection valve is in particular that in the Combustion chamber of the internal combustion engine injected Fuel jet cone-shaped with a specific Opening angle α is. An injection under different Opening angle α, which, for example, the different requirements for the shape of the mixture cloud in part-load and full load range, is hereby not possible.
Die WO 01/11228 A1 beschreibt ein Brennstoffeinspritzventil nach dem Oberbegriff des Anspruchs 1.WO 01/11228 A1 describes a fuel injection valve after Preamble of claim 1.
Das erfindungsgemäße Brennstoffeinspritzventil mit den kennzeichnenden Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil, daß je nach der Hubstellung der Ventilnadel ein größerer oder kleinerer Strahlöffnungswinkel darstellbar ist, der gemäß dem Betriebszustand der Brennkraftmaschine ausgewählt werden kann.The fuel injection valve according to the invention with the characterizing features of the main claim has In contrast, the advantage that, depending on the stroke position of Valve needle a larger or smaller jet angle can be represented, according to the operating state of Internal combustion engine can be selected.
Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterentwicklungen des im Hauptanspruch angegebenen Brennstoffeinspritzventils möglich.By the measures listed in the dependent claims are advantageous developments of the main claim specified fuel injector possible.
Vorteilhafterweise ist dies mittels einer einfach herstellbaren Geometrie des dem Dichtsitz benachbarten Endes des Brennstoffeinspritzventils erreichbar. Dazu ist ein geneigter Bereich, dessen Neigungswinkel von dem der Ventilsitzfläche abweicht, benachbart zur Ventilsitzfläche ausgebildet.This is advantageously simple producible geometry of the sealing seat adjacent end reach the fuel injector. This is one inclined area, whose inclination angle of the Valve seat surface deviates, adjacent to the valve seat educated.
Von Vorteil ist außerdem, daß mittels entsprechender Formung des abströmseitigen Endes des Brennstoffeinspritzventils und korrespondierend des Ventilschließkörpers jeder gewünschte Strahlwinkel realisierbar ist.Another advantage is that by means of appropriate shaping the downstream end of the fuel injection valve and corresponding to the valve closing body any desired Beam angle can be realized.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung vereinfacht dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen:
- Fig. 1
- einen schematischen Schnitt durch ein Ausführungsbeispiel eines erfindungsgemäß ausgestalteten Brennstoffeinspritzventils in einer ersten Hubposition, und
- Fig. 2
- einen schematischen Schnitt durch ein Ausführungsbeispiel eines erfindungsgemäß ausgestalteten Brennstoffeinspritzventils in einer zweiten Hubposition.
- Fig. 1
- a schematic section through an embodiment of an inventively designed fuel injector in a first stroke position, and
- Fig. 2
- a schematic section through an embodiment of an inventively designed fuel injector in a second stroke position.
Ein in den Fig. 1 und 2 in zwei verschiedenen Hubzuständen dargestelltes Ausführungsbeispiel eines erfindungsgemäßen Brennstoffeinspritzventils 1 ist in der Form eines Brennstoffeinspritzventils 1 für Brennstoffeinspritzanlagen von gemischverdichtenden, fremdgezündeten Brennkraftmaschinen ausgeführt. Das Brennstoffeinspritzventil 1 eignet sich insbesondere zum direkten Einspritzen von Brennstoff in einen nicht dargestellten Brennraum einer Brennkraftmaschine.A in Figs. 1 and 2 in two different stroke states illustrated embodiment of an inventive Fuel injection valve 1 is in the form of a Fuel injection valve 1 for fuel injection systems of mixture-compacting, externally ignited Internal combustion engine running. The Fuel injector 1 is particularly suitable for direct injection of fuel into one illustrated combustion chamber of an internal combustion engine.
Das Brennstoffeinspritzventil 1 besteht aus einem
Gehäusekörper 2 und einem Düsenkörper 3, in welchem eine
Ventilnadel 4 angeordnet ist. Die Ventilnadel 4 steht mit
einem Ventilschließkörper 5 in Wirkverbindung, der mit einer
Ventilsitzfläche 6 zu einem Dichtsitz zusammenwirkt. Bei dem
Brennstoffeinspritzventil 1 handelt es sich im
Ausführungsbeispiel um ein nach außen öffnendes
Brennstoffeinspritzventil 1. Das Brennstoffeinspritzventil 1
weist einen Aktor 7 auf, der im Ausführungsbeispiel als
piezoelektrischer Aktor 7 ausgeführt ist. Der Aktor stützt
sich einerseits am Gehäusekörper 2 und andererseits an einer
mit der Ventilnadel 4 in Wirkverbindung stehenden Schulter 8
ab. Abströmseitig der Schulter 8 ist eine Rückstellfeder 9
angeordnet, welche sich ihrerseits an dem Düsenkörper 3
abstützt.The fuel injection valve 1 consists of a
Die Ventilnadel 4 weist einen Brennstoffkanal 10 auf, durch
welchen der durch eine zulaufseitige zentrale
Brennstoffzufuhr 11 zugeleitete Brennstoff zum Dichtsitz
geführt wird. Zuströmseitig des Dichtsitzes ist eine
Drallkammer 12 ausgebildet, in welche der Brennstoffkanal 10
ausmündet.The
Im Ruhezustand des Brennstoffeinspritzventils 1 wird die
Schulter 8 durch die Kraft der Rückstellfeder 9 entgegen der
Hubrichtung so beaufschlagt, daß der Ventilschließkörper 5
an der Ventilsitzfläche 6 in dichtender Anlage gehalten
wird. Bei Erregung des piezoelektrischen Aktors 7 dehnt sich
dieser in axialer Richtung entgegen der Federkraft der
Rückstellfeder 9 aus, so daß die Schulter 8 mit der
Ventilnadel 4, welche mit der Schulter 8 kraftschlüssig
verbunden ist, in Hubrichtung bewegt wird. Der
Ventilschließkörper 5 hebt von der Ventilsitzfläche 6 ab,
und der über den Brennstoffkanal 10 geführte Brennstoff wird
abgespritzt.In the idle state of the fuel injection valve 1, the
Wird der piezoelektrische Aktor entladen, reduziert sich die
axiale Ausdehnung des piezoelektrischen Aktors 7, wodurch
die Ventilnadel 4 durch den Druck der Rückstellfeder 9
entgegen der Hubrichtung bewegt wird. Der
Ventilschließkörper 5 setzt auf der Ventilsitzfläche 6 auf
und das Brennstoffeinspritzventil 1 wird geschlossen.If the piezoelectric actuator is discharged, the reduced
axial extent of the
Eine gemischverdichtende, fremdgezundete Brennkraftmaschine stellt im Teillastbetrieb andere Anforderungen an die Form, die Stöchiometrie und das Penetrationsvermögen der in den Brennraum eingespritzten Gemischwolke als im Vollastbetrieb. Im Teillastbetrieb sollte die Gemischwolke, wie in Fig. 1 dargestellt, einen relativ kleinen Öffnungswinkel α1, ein großes Penetrationsvermögen, einen durch den kleinen Öffnungswinkel α1 bedingten schmalen Kernbereich mit fetterem Gemisch und eine sehr magere Hülle besitzen. Im Vollastbereich ist dagegen, wie in Fig. 2 dargestellt, ein großer Öffnungswinkel α2 und damit eine nahezu homogene Fullung des Zylinders mit zundfähigem Gemisch erforderlich.A mixture-compressing, externally-ignited internal combustion engine places other demands on the shape, the stoichiometry and the penetration capacity of the mixture cloud injected into the combustion chamber in partial-load operation than in full-load operation. In part-load operation, the mixture cloud, as shown in Fig. 1, a relatively small opening angle α 1 , a large penetration capacity, due to the small opening angle α 1 narrow core area with a richer mixture and have a very lean shell. In the full load range, however, as shown in Fig. 2, a large opening angle α 2 and thus a nearly homogeneous filling of the cylinder with zundfähigem mixture is required.
Um diesen Anforderungen an die Gemischbildung Rechnung zu tragen, sind für das erfindungsgemäße Brennstoffeinspritzventil 1 zwei Hubzustände definiert, wodurch während des Betriebs unterschiedliche Strahlbilder darstellbar sind, welche entsprechend dem Betriebszustand der Brennkraftmaschine ausgewählt werden können.To take account of these requirements for mixture formation wear are for the invention Fuel injector 1 defines two stroke states, whereby during operation different jet patterns can be displayed, which according to the operating condition the internal combustion engine can be selected.
Fig. 1 zeigt das Brennstoffeinspritzventil 1 in einem ersten
Hubzustand. Der Ventilschließkörper 5 hat bereits von der
Ventilsitzfläche 6 abgehoben, gibt jedoch nur einen Spalt 13
von geringer Breite zwischen dem Ventilschließkörper 5 und
der Ventilsitzfläche 6 frei. Durch die Geometrie des
abströmseitigen Endes 14 des Brennstoffeinspritzventils 1,
welches in einem geneigten Bereich 15 abströmseitig der
Ventilsitzfläche 6 eine geringere Neigung relativ zu einer
Längsachse 16 des Brennstoffeinspritzventils 1 aufweist als
die Ventilsitzfläche 6, legt sich in dem in Fig. 1
dargestellten ersten Hubzustand der aus dem Spalt 13
abgespritzte Brennstoffstrahl auf Grund des Entrainment der
Strömung im Inneren des Einspritzstrahls an den geneigten
Bereich 15 des abströmseitigen Endes 14 des
Brennstoffeinspritzventils 1 an. Dadurch kann ein
Brennstoffstrahl mit einem kleinen Öffnungswinkel α1
dargestellt werden, welcher ein großes, für den
Schichtladebetrieb benötigtes Penetrationsvermögen aufweist.Fig. 1 shows the fuel injection valve 1 in a first stroke state. The
In Fig. 2 ist eine zweite Hubstellung des
Brennstoffeinspritzventils 1 dargestellt. Der
Ventilschließkörper 5 ist nun weiter von der
Ventilsitzfläche 6 abgerückt, so daß der Spalt 13 weiter ist
als in Fig. 1. Bedingt durch das Entrainment der Strömung
außen am Einspritzstrahl des Spalts 13 legt sich der
abgespritzte Brennstoffstrahl nun an den Ventilschließkörper
5 an, welcher eine relativ zur Längsachse 16 des
Brennstoffeinspritzventils 1 große Neigung aufweist und
somit zu einer starken Aufweitung des Brennstoffstrahls
führt. Der Öffnungswinkel α2 ist somit gegenüber der ersten
Hubstellung vergrößert, was für den Vollastbereich der
Brennkraftmaschine vorteilhaft ist, da der gesamte Brennraum
mit einem relativ homogenen, stöchiometrischen Gemisch
gefüllt wird. 2, a second stroke position of the fuel injection valve 1 is shown. The
Die verschiedenen Hubstellungen der Ventilnadel 4 können in
einfacher Weise z. B. durch die Verwendung zweier separat
ansteuerbarer Aktoren 7 angefahren werden. Dies können
beispielsweise ein spannungsgeregelter bzw.
spannungsgesteuerter Piezoaktor sowie zwei piezoelektrische
Aktoren 7 sein, welche nacheinander angesteuert werden. Auch
die Verwendung zweier Magnetkreise mit zwei separaten Spulen
oder einem zweigeteilten Magnetanker ist denkbar.The different stroke positions of the
Durch eine geeignete Wahl der Neigung der Ventilsitzfläche 6
bzw des Ventilschließkörpers 5 und des geneigten Bereichs 15
sind die Strahlwinkel α1 und α2 so wählbar, daß der
Brennraum der Brennkraftmaschine optimal mit einem
zündfähigen Brennstoff-Luft-Gemisch gefüllt werden kann. Die
Herstellung des geneigten Bereichs 15 und der
Ventilsitzfläche 6 kann dabei beispielsweise bei der
Herstellung des Düsenkörpers 3 z. B. mittels Drehen
erfolgen.By a suitable choice of the inclination of the
Die Erfindung ist nicht auf das dargestellte Ausführungsbeispiel beschränkt und für beliebige Bauweisen von Brennstoffeinspritzventilen 1 mit beliebigen Aktoren 7 anwendbar.The invention is not limited to that shown Embodiment limited and for any construction of fuel injection valves 1 with arbitrary actuators. 7 applicable.
Claims (5)
- Fuel injection valve (1) for directly injecting fuel into the combustion chamber of an internal combustion engine, having a valve needle (4) which is arranged in a nozzle body (3) and which can be actuated by means of an actuator (7) and is acted on by a restoring spring (9) in such a way that a valve closing body (5) which is operatively connected to the valve needle (4) and faces the combustion chamber is held, in the non-actuated state of the actuator (7), in a seal-forming abutment against a valve seat face (6), wherein a first jet aperture angle α1 is assigned to a first stroke state of the valve needle (4) and a second jet aperture angle α2 is assigned to a second stroke state of the valve needle (4), characterized in that an inclined area (15) is formed at an outflow end (13) of the fuel injection valve (1) adjacent to the valve seat face (6), and in that the inclined area (15) has a smaller degree of inclination with respect to a longitudinal axis (16) of the fuel injection valve (1) than the valve seat face (6).
- Fuel injection valve according to Claim 1, characterized in that a first valve needle stroke corresponding to the first stroke state is smaller than a second valve needle stroke corresponding to the second stroke state.
- Fuel injection valve according to Claim 2, characterized in that α1 is smaller than α2.
- Fuel injection valve according to one of Claims 1 to 3, characterized in that the aperture angle α1 is twice the angle of inclination of the inclined area (15) with respect to the longitudinal axis (16) of the fuel injection valve (1).
- Fuel injection valve according to one of Claims 1 to 3, characterized in that the aperture angle α2 is twice the angle of inclination of the valve seat face (6) with respect to the longitudinal axis (16) of the fuel injection valve (1).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10152416A DE10152416A1 (en) | 2001-10-24 | 2001-10-24 | Fuel injector |
| DE10152416 | 2001-10-24 | ||
| PCT/DE2002/003072 WO2003038273A1 (en) | 2001-10-24 | 2002-08-22 | Fuel injection valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1440239A1 EP1440239A1 (en) | 2004-07-28 |
| EP1440239B1 true EP1440239B1 (en) | 2005-07-20 |
Family
ID=7703530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02769885A Expired - Lifetime EP1440239B1 (en) | 2001-10-24 | 2002-08-22 | Fuel injection valve |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7140562B2 (en) |
| EP (1) | EP1440239B1 (en) |
| JP (1) | JP4377230B2 (en) |
| KR (1) | KR20040054734A (en) |
| DE (2) | DE10152416A1 (en) |
| WO (1) | WO2003038273A1 (en) |
Families Citing this family (34)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10259799A1 (en) * | 2002-12-19 | 2004-07-29 | Robert Bosch Gmbh | Fuel injector |
| EP1500812A1 (en) * | 2003-07-25 | 2005-01-26 | Delphi Technologies, Inc. | Outward opening fuel nozzle |
| DE10346970B3 (en) * | 2003-10-09 | 2004-11-18 | Siemens Ag | Controlling internal combustion engine involves determining fuel quantity base value from load parameter, corrected with value dependent on fuel pressure in feed device and nozzle needle displacement |
| DE10353639A1 (en) * | 2003-11-17 | 2005-06-16 | Robert Bosch Gmbh | Fuel injector |
| CN100422545C (en) * | 2004-12-15 | 2008-10-01 | 浙江飞亚电子有限公司 | Oil spray nozzle |
| US7628137B1 (en) | 2008-01-07 | 2009-12-08 | Mcalister Roy E | Multifuel storage, metering and ignition system |
| US8561598B2 (en) | 2008-01-07 | 2013-10-22 | Mcalister Technologies, Llc | Method and system of thermochemical regeneration to provide oxygenated fuel, for example, with fuel-cooled fuel injectors |
| US8413634B2 (en) | 2008-01-07 | 2013-04-09 | Mcalister Technologies, Llc | Integrated fuel injector igniters with conductive cable assemblies |
| US8365700B2 (en) | 2008-01-07 | 2013-02-05 | Mcalister Technologies, Llc | Shaping a fuel charge in a combustion chamber with multiple drivers and/or ionization control |
| US8635985B2 (en) | 2008-01-07 | 2014-01-28 | Mcalister Technologies, Llc | Integrated fuel injectors and igniters and associated methods of use and manufacture |
| US8225768B2 (en) | 2008-01-07 | 2012-07-24 | Mcalister Technologies, Llc | Integrated fuel injector igniters suitable for large engine applications and associated methods of use and manufacture |
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| DE231126C (en) | ||||
| US2796296A (en) * | 1953-04-27 | 1957-06-18 | John F Campbell | Nozzle exit valve |
| DE967935C (en) | 1953-12-13 | 1957-12-27 | Kloeckner Humboldt Deutz Ag | Fuel injector |
| US4197997A (en) * | 1978-07-28 | 1980-04-15 | Ford Motor Company | Floating ring fuel injector valve |
| DE3300670A1 (en) | 1982-01-23 | 1983-08-04 | Lucas Industries P.L.C., Birmingham, West Midlands | Fuel injection nozzle |
| DE3719459A1 (en) * | 1987-06-11 | 1988-12-29 | Bosch Gmbh Robert | FUEL INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES |
| US4993643A (en) * | 1988-10-05 | 1991-02-19 | Ford Motor Company | Fuel injector with variable fuel spray shape or pattern |
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| US4982708A (en) * | 1989-06-22 | 1991-01-08 | Robert Bosch Gmbh | Fuel injection nozzle for internal combustion engines |
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| DE19843570A1 (en) * | 1998-09-23 | 2000-03-30 | Bosch Gmbh Robert | Fuel injector |
| US6042028A (en) * | 1999-02-18 | 2000-03-28 | General Motors Corporation | Direct injection fuel injector spray nozzle and method |
| DE19936944A1 (en) * | 1999-08-05 | 2001-02-08 | Bosch Gmbh Robert | Method for metering fuel using a fuel injector |
| DE19948237A1 (en) * | 1999-10-07 | 2001-04-12 | Bosch Gmbh Robert | Method for metering fuel using a fuel injector |
-
2001
- 2001-10-24 DE DE10152416A patent/DE10152416A1/en not_active Withdrawn
-
2002
- 2002-08-22 JP JP2003540520A patent/JP4377230B2/en not_active Expired - Lifetime
- 2002-08-22 DE DE50203701T patent/DE50203701D1/en not_active Expired - Lifetime
- 2002-08-22 WO PCT/DE2002/003072 patent/WO2003038273A1/en active IP Right Grant
- 2002-08-22 KR KR10-2004-7005973A patent/KR20040054734A/en not_active Application Discontinuation
- 2002-08-22 US US10/451,556 patent/US7140562B2/en not_active Expired - Fee Related
- 2002-08-22 EP EP02769885A patent/EP1440239B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP1440239A1 (en) | 2004-07-28 |
| DE10152416A1 (en) | 2003-06-18 |
| DE50203701D1 (en) | 2005-08-25 |
| WO2003038273A1 (en) | 2003-05-08 |
| JP2005507055A (en) | 2005-03-10 |
| JP4377230B2 (en) | 2009-12-02 |
| KR20040054734A (en) | 2004-06-25 |
| US7140562B2 (en) | 2006-11-28 |
| US20040075002A1 (en) | 2004-04-22 |
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