EP0890735A2 - Fuel injection valve - Google Patents
Fuel injection valve Download PDFInfo
- Publication number
- EP0890735A2 EP0890735A2 EP98109048A EP98109048A EP0890735A2 EP 0890735 A2 EP0890735 A2 EP 0890735A2 EP 98109048 A EP98109048 A EP 98109048A EP 98109048 A EP98109048 A EP 98109048A EP 0890735 A2 EP0890735 A2 EP 0890735A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- rounding
- spray holes
- valve
- degree
- combustion chamber
- 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
- 239000000446 fuel Substances 0.000 title claims description 28
- 238000002347 injection Methods 0.000 title claims description 13
- 239000007924 injection Substances 0.000 title claims description 13
- 239000007921 spray Substances 0.000 claims abstract description 60
- 238000002485 combustion reaction Methods 0.000 claims abstract description 39
- 238000009434 installation Methods 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 230000008901 benefit Effects 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method 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
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
- F02M61/182—Discharge orifices being situated in different transversal planes with respect to valve member direction of movement
-
- 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
- F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
-
- 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
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
-
- 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
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
- F02M61/184—Discharge orifices having non circular sections
Definitions
- the invention relates to a fuel injection valve for an internal combustion engine comprising an in a valve body against the restoring force of a valve spring movable valve member with a valve sealing surface, those with a valve seat arranged on the valve body cooperates, and with several below the valve seat spray holes arranged in the valve body, the Inlet openings are rounded.
- Such a fuel injector for one Internal combustion engine is derived, for example, from EP 0 370 659 A1. By rounding the inlet openings the spray holes will allow a larger amount Fuel through the spray holes in the combustion chamber Internal combustion engine can be injected as a Restriction of the fuel flowing through the spray holes, with a sharp-edged inlet opening results, does not occur.
- a large Degree of rounding means rounding with a large one Radius, a small degree of rounding a rounding with a small radius.
- the invention is therefore based on the object Fuel injector of the generic type to further develop that in a simple manner Adjustment of the spray holes to the most varied Relationships, especially to the most varied Installation positions in combustion chambers as well as in a wide variety Combustion chamber shapes is made possible, so that the combustion process is further improved.
- This task is done with a fuel injector of the type described in the introduction solved that part of the spray holes at least one different rounding degree from the rest of the spray holes having.
- An advantageous embodiment provides that the Inlet openings of one or more spray holes Another side facing the valve member Have degree of rounding than on their the valve member opposite side.
- the degree of rounding varies not just from spray hole to spray hole, but also depending on the position of the Inlet openings relative to the valve member at each an inlet opening of the individual spray holes.
- the degree of rounding Inlet openings of the spray holes on the arrangement of the Spray holes in the valve body, to the installation position in a combustion chamber of the internal combustion engine and on the Combustion chamber shape of the internal combustion engine is adapted.
- the degree of rounding the inlet opening of the spray hole which of a combustion chamber wall in the installed state is removed, has a greater degree of rounding than the inlet opening one less from the combustion chamber wall far away spray hole. Due to the greater degree of rounding becomes a sharper bundling and one greater length of the sprayed through such a spray hole Fuel jet reached than at one Spray hole, which is an inlet opening with a smaller degree of rounding having.
- one or more of the spray holes none Show roundness.
- a fuel injection valve for internal combustion engines shown in Fig. 2 comprises a piston-shaped valve member 41, which is axially displaceable in a bore 42 a valve body 43 is guided.
- the valve member 41 points at one, the combustion chamber of an internal combustion engine (not shown) facing end a conical Valve sealing surface 44 with which it is conical Valve seat 45 on the inwardly projecting closed end the bore 42 cooperates.
- the valve body 43 is thereby with its end distant from the combustion chamber by means of a Clamping nut 46 axially against a valve holding body 47 braced, being between the end faces of the valve body 43 and the valve holding body 47 an washer 48 is clamped with a central opening.
- Valve member 41 At its end facing away from the valve seat 45, the Valve member 41 via a pressure piece 49, which the washer 48 protrudes from a coil spring 50 Trained valve spring, which is attached to a stationary Stop 51, which is arranged on the valve holding body 47 is supported and on the valve member 41 one to Valve seat 45 exerts directed force with a Spring force applied.
- valve sealing surface 44 and the valve seat 45 are in the wall of the valve body 43 spray holes 53, 57 provided in the combustion chamber of the internal combustion engine flow out.
- the high-pressure fuel supply takes place in a known manner via a between the stem of the valve member 41 and the wall of the bore 42 formed annular channel 54, the expands into a pressure chamber 55, in which one of an injection pump, not shown, discharge pressure line 56 opens.
- the inlet openings have 60 of the spray holes 53, 57 curves 61, 62, 63, 64 with different radii, i.e. with different Degrees of rounding.
- the inlet opening 60 of the spray hole 57 has, for example Rounding 61, 62 with a smaller degree of rounding than the inlet opening 60 of the spray hole 53.
- the inlet opening greater degrees of rounding has than that of the inlet opening of the spray hole 57 at a point in the combustion chamber of the internal combustion engine arranged which is a greater distance from the combustion chamber wall has than that of the spray hole 57.
- the Rounding 63, 64 with larger degrees of rounding is namely a stronger concentration of the through the spray hole 53rd sprayed fuel jet, which also has a greater length than that of the Spray hole 57 sprayed fuel jet the case is.
- spray holes can be used drilled and rounded and only then the remaining spray holes be drilled and rounded.
- the first ones drilled and rounded spray holes are then at a further HE rounding process more rounded than that last drilled spray holes.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Die Erfindung betrifft ein Kraftstoffeinspritzventil für eine Brennkraftmaschine umfassend ein in einem Ventilkörper entgegen der Rückstellkraft einer Ventilfeder verschiebliches Ventilglied mit einer Ventildichtfläche, die mit einem an dem Ventilkörper angeordneten Ventilsitz zusammenwirkt, und mit mehreren unterhalb des Ventilsitzes in dem Ventilkörper angeordneten Spritzlöchern, deren Einlaßöffnungen abgerundet sind.The invention relates to a fuel injection valve for an internal combustion engine comprising an in a valve body against the restoring force of a valve spring movable valve member with a valve sealing surface, those with a valve seat arranged on the valve body cooperates, and with several below the valve seat spray holes arranged in the valve body, the Inlet openings are rounded.
Ein derartiges Kraftstoffeinspritzventil für eine Brennkraftmaschine geht beispielsweise aus der EP 0 370 659 A1 hervor. Durch die Abundung der Einlaßöffnungen der Spritzlöcher wird ermöglicht, daß eine größere Menge Kraftstoffs durch die Spritzlöcher in den Brennraum der Brennkraftmaschine eingespritzt werden kann, da eine Einengung des durch die Spritzlöcher strömenden Kraftstoffes, die sich bei einer scharfkantigen Einlaßöffnung ergibt, nicht auftritt. Such a fuel injector for one Internal combustion engine is derived, for example, from EP 0 370 659 A1. By rounding the inlet openings the spray holes will allow a larger amount Fuel through the spray holes in the combustion chamber Internal combustion engine can be injected as a Restriction of the fuel flowing through the spray holes, with a sharp-edged inlet opening results, does not occur.
Durch die abgerundeten Einlaßöffnungen kann darüber hinaus die Form des durch die Spritzlöcher ausgespritzten Strahls verändert werden. Bei dem aus der EP 0 370 659 A1 bekannten Kraftstoffeinspritzventil ist dabei vorgesehen, daß die Spritzlöcher auf ihrer dem Ventilglied zugewandten Seite einen anderen Rundungsgrad aufweisen als auf ihrer dem Ventilglied abgewandten Seite.Through the rounded inlet openings can be above also the shape of the sprayed through the spray holes Beam can be changed. In the case of EP 0 370 659 A1 known fuel injection valve is provided that the spray holes on the valve member facing Page have a different degree of rounding than on their side facing away from the valve member.
Hierbei und im folgenden ist unter Rundungsgrad dabei jeweils der Radius der Rundung zu verstehen. Ein großer Rundungsgrad bedeutet eine Rundung mit einem großen Radius, ein kleiner Rundungsgrad eine Rundung mit einem kleinen Radius.Here and in the following is included under rounding degree to understand the radius of the curve. A large Degree of rounding means rounding with a large one Radius, a small degree of rounding a rounding with a small radius.
Die Rundungsgrade der Einlaßöffnung des Spritzlochs des aus der EP 0 370 659 A1 bekannten Kraftstoffeinspritzventils sind so gewählt, daß eine möglichst optimale Verbrennung im Brennraum erzielt werden kann.The rounding of the inlet opening of the spray hole of the fuel injection valve known from EP 0 370 659 A1 are chosen so that the best possible combustion can be achieved in the combustion chamber.
Wenn - wie es heute üblich ist - mehrere Spritzlöcher in dem Kraftstoffeinspritzventil vorgesehen sind, können feste, vorgegebene Spritzlöcher und die dadurch hervorgerufenen Strahlformen des ausgespritzten Kraftstoffs je nach Einbauposition im Brennraum einer Brennkraftmaschine wenig vorteilhaft sein.If - as is common today - several spray holes in the fuel injection valve can be provided fixed, predetermined spray holes and the resulting Jet shapes of the injected fuel each after installation position in the combustion chamber of an internal combustion engine be of little benefit.
Der Erfindung liegt daher die Aufgabe zugrunde, ein Kraftstoffeinspritzventil der gattungsgemäßen Art derart weiterzubilden, daß auf einfach herzustellende Weise eine Anpassung der Spritzlöcher auf unterschiedlichste Verhältnisse, insbesondere auf unterschiedlichste Einbaupositionen in Brennräumen sowie auf unterschiedlichste Brennraumformen ermöglich wird, so daß der Verbrennungsvorgang weiter verbessert wird. The invention is therefore based on the object Fuel injector of the generic type to further develop that in a simple manner Adjustment of the spray holes to the most varied Relationships, especially to the most varied Installation positions in combustion chambers as well as in a wide variety Combustion chamber shapes is made possible, so that the combustion process is further improved.
Diese Aufgabe wird bei einem Kraftstoffeinspritzventil der eingangs beschriebenen Art erfindungsgemäß dadurch gelöst, daß ein Teil der Spritzlöcher wenigstens einen von dem Rest der Spritzlöcher unterschiedlichen Rundungsgrad aufweist.This task is done with a fuel injector of the type described in the introduction solved that part of the spray holes at least one different rounding degree from the rest of the spray holes having.
Dadurch, daß wenigstens ein Teil der Spritzlöcher einen von dem Rest der Spritzlöcher unterschiedlichen Rundungsgrad aufweist, wird insbesondere ermöglicht, daß die aus den einzelnen Spritzlöchern eines Kraftstoffeinspritzventils ausströmenden Strahlformen unterschiedlichste, auf die jeweilige Einbausituation und Einbauposition angepaßte Formen aufweisen. Hierdurch wird insbesondere ermöglicht, daß mittels eines einzigen Kraftstoffeinspritzventils mehrere, voneinander verschiedene Strahlformen und damit eine positionsabhängige Mengenverteilung des in einen Brennraum eingespritzten Kraftstoffs erreicht wird.The fact that at least a portion of the spray holes one different rounding degree from the rest of the spray holes has, in particular, that the the individual spray holes in a fuel injector outflowing jet shapes adapted to the respective installation situation and installation position Have shapes. This in particular enables that by means of a single fuel injector several different jet shapes and thus a position-dependent quantity distribution of the fuel injected into a combustion chamber is achieved.
Dabei können mehrere Spritzlöcher den gleichen Rundungsgrad aufweisen, es ist aber auch möglich, daß sämtliche Spritzlöcher Einlaßöffnungen mit völlig unterschiedlichen Rundungsgraden aufweisen. Rein prinzipiell sind hinsichtlich der Rundungsgrade der einzelnen Spritzlöcher die unterschiedlichsten Kombinationen denkbar.Several spray holes can have the same degree of rounding have, but it is also possible that all Spray holes inlets with completely different Show degrees of rounding. Are purely principally regarding the degree of rounding of the individual spray holes different combinations possible.
Eine vorteilhafte Ausführungsform sieht vor, daß die Einlaßöffnungen einzelner oder mehrerer Spritzlöcher auf Ihrer dem Ventilglied zugewandten Seite einen anderen Rundungsgrad aufweisen als auf ihrer dem Ventilglied abgewandten Seite. In diesem Falle variiert der Rundungsgrad nicht nur von Spritzloch zu Spritzloch, sondern darüber hinaus auch noch abhängig von der Position der Einlaßöffnungen relativ zu dem Ventilglied an jeweils einer Einlaßöffnung der einzelnen Spritzlöcher.An advantageous embodiment provides that the Inlet openings of one or more spray holes Another side facing the valve member Have degree of rounding than on their the valve member opposite side. In this case the degree of rounding varies not just from spray hole to spray hole, but also depending on the position of the Inlet openings relative to the valve member at each an inlet opening of the individual spray holes.
Vorzugsweise ist vorgesehen, daß der Rundungsgrad der Einlaßöffnungen der Spritzlöcher auf die Anordnung der Spritzlöcher in dem Ventilkörper, auf die Einbauposition in einem Brennraum der Brennkraftmaschine und auf die Brennraumform der Brennkraftmaschine angepaßt ist.It is preferably provided that the degree of rounding Inlet openings of the spray holes on the arrangement of the Spray holes in the valve body, to the installation position in a combustion chamber of the internal combustion engine and on the Combustion chamber shape of the internal combustion engine is adapted.
Hierbei erweist es sich als vorteilhaft, daß der Rundungsgrad der Einlaßöffnung des Spritzlochs, das von einer Brennraumwand im eingebauten Zustand weiter entfernt ist, einen größeren Rundungsgrad aufweist als die Einlaßöffnung eines von der Brennraumwand weniger weit entfernten Spritzlochs. Durch den größeren Rundungsgrad wird nämlich eine schärfere Bündelung und eine größere Länge des durch ein derartiges Spritzloch ausgespritzten Kraftstoff-Strahls erreicht als bei einem Spritzloch, das eine Einlaßöffnung mit kleinerem Rundungsgrad aufweist.It proves advantageous here that the degree of rounding the inlet opening of the spray hole, which of a combustion chamber wall in the installed state is removed, has a greater degree of rounding than the inlet opening one less from the combustion chamber wall far away spray hole. Due to the greater degree of rounding becomes a sharper bundling and one greater length of the sprayed through such a spray hole Fuel jet reached than at one Spray hole, which is an inlet opening with a smaller degree of rounding having.
Bei einer anderen vorteilhaften Ausführungsform ist vorgesehen, daß eines oder mehrere der Spritzlöcher keine Rundung aufweisen.In another advantageous embodiment provided that one or more of the spray holes none Show roundness.
Weitere Merkmale und Vorteile der Erfindung sind Gegenstand der nachfolgenden Beschreibung sowie der zeichnerischen Darstellung einiger Ausführungsbeispiele.Other features and advantages of the invention are the subject the following description and the graphic Representation of some embodiments.
In der Zeichnung zeigen:
- Fig. 1
- eine teilweise geschnittene Darstellung des unteren Bereichs eines erfindungsgemäßen Kraftstoffeinspritzventils und
- Fig. 2
- eine geschnittene Darstellung eines Kraftstoffeinspritzventils.
- Fig. 1
- a partially sectioned representation of the lower region of a fuel injection valve according to the invention and
- Fig. 2
- a sectional view of a fuel injector.
Ein Kraftstoffeinspritzventil für Brennkraftmaschinen,
dargestellt in Fig. 2, umfaßt ein kolbenförmiges Ventilglied
41, das axialverschieblich in einer Bohrung 42
eines Ventilkörpers 43 gefuhrt ist. Das Ventilglied 41
weist an seinem einen, dem Brennraum einer Brennkraftmaschine
(nicht dargestellt) zugewandten Ende eine konische
Ventildichtfläche 44 auf, mit der es mit einem konischen
Ventilsitz 45 am nach innen ragenden geschlossenen Ende
der Bohrung 42 zusammenwirkt. Der Ventilkörper 43 ist
dabei mit seinem brennraumfernen Ende mittels einer
Spannmutter 46 axial gegen einen Ventilhaltekörper 47
verspannt, wobei zwischen den Stirnflächen des Ventilkörpers
43 und des Ventilhaltekörpers 47 eine Zwischenscheibe
48 mit einer zentralen Öffnung eingespannt ist.A fuel injection valve for internal combustion engines,
shown in Fig. 2 comprises a piston-
An seinem dem Ventilsitz 45 abgewandten Ende wird das
Ventilglied 41 über ein Druckstück 49, das die Zwischenscheibe
48 durchragt, von einer als Schraubenfeder 50
ausgebildeten Ventilfeder, die sich an einem ortsfesten
Anschlag 51, der an dem Ventilhaltekörper 47 angeordnet
ist, abstützt und auf das Ventilglied 41 eine zum
Ventilsitz 45 hin gerichtete Kraft ausübt, mit einer
Federkraft beaufschlagt.At its end facing away from the
Unterhalb der Ventildichtfläche 44 und des Ventilsitzes
45 sind in der Wand des Ventilkörpers 43 Spritzlöcher 53,
57 vorgesehen, die in den Brennraum der Brennkraftmaschine
münden.Below the
Die Kraftstoffhochdruckzufuhr erfolgt in bekannter Weise
über einen zwischen dem Schaft des Ventilglieds 41 und
der Wand der Bohrung 42 ausgebildeten Ringkanal 54, der
sich in einen Druckraum 55 erweitert, in den eine von
einer nicht gezeigten Einspritzpumpe abführende Druckleitung
56 mündet.The high-pressure fuel supply takes place in a known manner
via a between the stem of the
Wie in Fig. 1 dargestellt ist, weisen die Einlaßöffnungen
60 der Spritzlöcher 53, 57 Rundungen 61, 62, 63, 64 mit
unterschiedlichen Radien, d.h. mit unterschiedlichen
Rundungsgraden auf.As shown in Fig. 1, the inlet openings have
60 of the
Die Einlaßöffnung 60 des Spritzlochs 57 weist beispielsweise
Rundungen 61, 62 mit kleinerem Rundungsgrad auf als
die Einlaßöffnung 60 des Spritzlochs 53. Dabei unterscheiden
sich die Rundungsgrade der Einlaßöffnungen der
Spritzlöcher auf ihrer dem Ventilglied zugewandten Seite
von den Rundungsgraden der Einlaßöffnungen auf ihren
jeweils dem Ventilglied abgewandten Seiten.The inlet opening 60 of the
Bei den in Fig. 1 dargestellten Spritzlöchern 53, 57 ist
beispielsweise das auf der rechten Seite dargestellte
Spritzloch 53, dessen Einlaßöffnung größere Rundungsgrade
aufweist als diejenigen der Einlaßöffnung des Spritzlochs
57 an einer Stelle des Brennraums der Brennkraftmaschine
angeordnet, die einen größeren Abstand zur Brennraumwand
aufweist als derjenige des Spritzlochs 57. Durch die
Rundungen 63, 64 mit größeren Rundungsgraden wird nämlich
eine stärkere Bündelung des durch das Spritzloch 53
ausgespritzten Kraftstoff-Strahls ermöglicht, der zudem
eine größere Länge aufweist als es bei dem durch das
Spritzloch 57 ausgespritzten Kraftstoff-Strahl der Fall
ist.In the
Die Ausbildung der Einlaßöffnung 60 der Spritzlöcher 53,
57 wird mit anderen Worten abhängig von der Einbauposition
in dem Brennraum und der Brennraumform gewählt.
Dabei erweist es sich als besonders vorteilhaft, daß die
Rundungen 61, 62, 63, 64 auf besonders einfache Weise
beispielsweise durch sogenanntes HE-Runden, d.h. hydroerosives
Runden hergestellt werden. Bei diesem hydroerosiven
Runden wird ein Schleifkörper enthaltendes Fluid
mit Druck durch zuvor hergestellte Bohrungen in dem
Ventilkörper 43 gepreßt, wodurch die Kanten der Einlaßöffnungen
durch Abschleifen gerundet wurden. Durch
Abdecken einzelner Spritzlöcher auf ihrer Einlaßseite
und/oder auf ihrer Auslaßseite können unterschiedliche
Rundungsgrade hergestellt werden. Statt abgedeckt zu
werden, kann zunächst auch nur ein Teil der Spritzlöcher
gebohrt und gerundet und erst dann die übrigen Spritzlöcher
gebohrt und gerundet werden. Die zuerst gebohrten
und gerundeten Spritzlöcher werden sodann bei einem
weiteren HE-Rundungsvorgang stärker gerundet als die
zuletzt gebohrten Spritzlöcher.The formation of the inlet opening 60 of the
Durch die obenbeschriebenen Kraftstoffeinspritzventile läßt sich eine optimale Mengenverteilung des eingespritzten Kraftstoffes auf die Brennraumform und auf die Einbauposition anpassen, wobei die Strahlform durch Verändern der Rundungsgrade praktisch frei wählbar ist.Through the fuel injectors described above an optimal quantity distribution of the injected Fuel on the shape of the combustion chamber and on the Adjust installation position, taking the beam shape through Changing the degree of rounding is practically freely selectable.
Claims (5)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19729827 | 1997-07-11 | ||
| DE19729827A DE19729827A1 (en) | 1997-07-11 | 1997-07-11 | Fuel injector |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| EP0890735A2 true EP0890735A2 (en) | 1999-01-13 |
| EP0890735A3 EP0890735A3 (en) | 2001-10-10 |
| EP0890735B1 EP0890735B1 (en) | 2006-10-18 |
| EP0890735B2 EP0890735B2 (en) | 2014-09-10 |
Family
ID=7835445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98109048.3A Expired - Lifetime EP0890735B2 (en) | 1997-07-11 | 1998-05-19 | Fuel injection valve |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5992766A (en) |
| EP (1) | EP0890735B2 (en) |
| JP (1) | JP4154033B2 (en) |
| DE (2) | DE19729827A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000060234A1 (en) * | 1999-03-31 | 2000-10-12 | Siemens Aktiengesellschaft | Method and device for hydro-erosively smoothing the bore edges in a nozzle body, and nozzle body |
| FR2796104A1 (en) * | 1999-07-08 | 2001-01-12 | Siemens Ag | INJECTOR BODY HAVING OPTIMAL INJECTION ORIFICE GEOMETRY AND METHOD FOR BENDING THE EDGES OF SUCH AN ORIFICE |
| WO2003093669A1 (en) * | 2002-05-02 | 2003-11-13 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engines |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4189714B2 (en) | 2000-08-03 | 2008-12-03 | 株式会社デンソー | Fuel injection device |
| DE10156020A1 (en) * | 2001-11-15 | 2003-07-17 | Bosch Gmbh Robert | Fuel injector |
| DE10330256A1 (en) † | 2003-07-04 | 2005-01-20 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engine, comprises bulges arranged such that the two connecting lines of points of largest distance to the center form an angle of less than 180 degrees with the mirror plane |
| DE102004062008A1 (en) * | 2004-12-23 | 2006-07-13 | Robert Bosch Gmbh | Fuel filter with outlet openings, which are preferably processed by a hydroerosive method |
| US7572997B2 (en) * | 2007-02-28 | 2009-08-11 | Caterpillar Inc. | EDM process for manufacturing reverse tapered holes |
| JP5257456B2 (en) * | 2008-09-24 | 2013-08-07 | トヨタ自動車株式会社 | Fuel injection valve for internal combustion engine and method for manufacturing the same |
| WO2019030078A1 (en) * | 2017-08-08 | 2019-02-14 | Robert Bosch Gmbh | Fuel injector nozzle |
| DE102019202073A1 (en) | 2019-02-15 | 2020-08-20 | Robert Bosch Gmbh | Method for producing an injection nozzle for injecting fuel into a combustion chamber of an internal combustion engine and nozzle arrangement with an injection nozzle |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0370659A1 (en) | 1988-11-19 | 1990-05-30 | Lucas Industries Public Limited Company | Fuel injection nozzle |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2557772A1 (en) * | 1975-12-20 | 1977-06-23 | Kloeckner Humboldt Deutz Ag | FUEL INJECTION VALVE |
| JPS58106167A (en) † | 1981-12-21 | 1983-06-24 | Hino Motors Ltd | Fuel injection nozzle of internal-combustion engine |
| JPS6049262U (en) * | 1983-09-14 | 1985-04-06 | 日産自動車株式会社 | Diesel engine fuel injection valve |
| US4578164A (en) * | 1983-08-24 | 1986-03-25 | Nissan Motor Co., Ltd. | Method of electrolytically finishing spray-hole of fuel injection nozzle |
| JPH0267459A (en) * | 1988-08-31 | 1990-03-07 | Nippon Denso Co Ltd | Fuel injection nozzle |
| JPH0494452A (en) * | 1990-08-08 | 1992-03-26 | Nissan Motor Co Ltd | Fuel injection nozzle |
| JPH0583367U (en) * | 1992-04-20 | 1993-11-12 | 日産ディーゼル工業株式会社 | Fuel injection nozzle for direct injection diesel engine |
| DE19507188C1 (en) * | 1995-03-02 | 1996-08-14 | Bosch Gmbh Robert | Fuel injection valve for internal combustion engines |
| EP0809017A1 (en) * | 1996-05-22 | 1997-11-26 | Steyr-Daimler-Puch Aktiengesellschaft | Two-stage fuel injection nozzel for internal combustion engine |
-
1997
- 1997-07-11 DE DE19729827A patent/DE19729827A1/en not_active Withdrawn
-
1998
- 1998-05-19 DE DE59813768T patent/DE59813768D1/en not_active Expired - Lifetime
- 1998-05-19 EP EP98109048.3A patent/EP0890735B2/en not_active Expired - Lifetime
- 1998-07-08 JP JP19284298A patent/JP4154033B2/en not_active Expired - Fee Related
- 1998-07-13 US US09/114,277 patent/US5992766A/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0370659A1 (en) | 1988-11-19 | 1990-05-30 | Lucas Industries Public Limited Company | Fuel injection nozzle |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000060234A1 (en) * | 1999-03-31 | 2000-10-12 | Siemens Aktiengesellschaft | Method and device for hydro-erosively smoothing the bore edges in a nozzle body, and nozzle body |
| FR2796104A1 (en) * | 1999-07-08 | 2001-01-12 | Siemens Ag | INJECTOR BODY HAVING OPTIMAL INJECTION ORIFICE GEOMETRY AND METHOD FOR BENDING THE EDGES OF SUCH AN ORIFICE |
| WO2003093669A1 (en) * | 2002-05-02 | 2003-11-13 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engines |
Also Published As
| Publication number | Publication date |
|---|---|
| US5992766A (en) | 1999-11-30 |
| EP0890735A3 (en) | 2001-10-10 |
| JP4154033B2 (en) | 2008-09-24 |
| DE19729827A1 (en) | 1999-01-14 |
| JPH1193806A (en) | 1999-04-06 |
| DE59813768D1 (en) | 2006-11-30 |
| EP0890735B1 (en) | 2006-10-18 |
| EP0890735B2 (en) | 2014-09-10 |
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