EP0890734B2 - Fuel injection valve - Google Patents
Fuel injection valve Download PDFInfo
- Publication number
- EP0890734B2 EP0890734B2 EP98109405A EP98109405A EP0890734B2 EP 0890734 B2 EP0890734 B2 EP 0890734B2 EP 98109405 A EP98109405 A EP 98109405A EP 98109405 A EP98109405 A EP 98109405A EP 0890734 B2 EP0890734 B2 EP 0890734B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- annular shoulder
- valve
- annular
- fuel injection
- shoulder
- 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
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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
- F02M61/168—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
- F02M61/04—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
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
-
- 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
Definitions
- the invention relates to a fuel injection valve for internal combustion engines with a valve body held in a valve body, in which a valve member is guided axially displaceably in a bore, wherein the bore has a radially expanded pressure chamber into which at least one adjacent to the bore inlet channel opens and with a clamping nut , which clamped with an inner, conical annular shoulder at a height of the pressure chamber arranged annular shoulder of the valve body fitting this against the valve holding body.
- Such a fuel injection valve is for example from the DE 195 23 243 A1 out.
- both the annular shoulder of the valve body axially against the holding body spanning clamping nut at its end facing away from the holding body and cooperating with this annular shoulder on the valve body are conical, wherein the angle which includes the conical annular shoulder with the valve member axis is smaller than that Angle enclosed by the conical annular shoulder with the valve member axis.
- the invention is therefore the object of developing a generic fuel injection valve to the effect that the friction radius and thereby the torque generated on the tightening torque of the clamping nut resulting force is kept as constant as possible.
- annular shoulder on its side facing the annular shoulder is curved or exactly two angularly adjacent, an edge to form the support to the annular shoulder surfaces forming that in a given distance from the valve member axis exactly gives an annular circumferential support point at which rests the conical annular shoulder in the assembled state.
- This curved design of the annular shoulder on its annular shoulder facing side to form a ring at a predetermined distance from the valve member axis encircling support point at which abuts the conical annular shoulder in the assembled state has the particularly great advantage that the friction radius is kept largely constant because he is fixed by the geometric design of the ring heel.
- the friction radius is kept constant, in particular during assembly and in the tightened state of the clamping nut, so that a precise and defined resulting from the tightening torque of the clamping nut resulting force on the valve body.
- annular shoulder has a substantially circular shape in section, on which the annular shoulder is tangent-shaped to form the annular peripheral support point.
- the annular shoulder has at least two adjoining surfaces at an angle whose boundary edge forms the annular peripheral support point.
- the conical annular shoulder of the clamping nut has two differently inclined annular shoulder areas, the radially outer lying rests on the annular peripheral bearing point, and which is exposed to these over an edge subsequent radially inner, a smaller angle to the valve member axis exhibiting annular shoulder area.
- FIG. 1 illustrated fuel injection valve for internal combustion engines has a valve body 1, which is braced axially with the interposition of an intermediate disc 3 by means of a sleeve-shaped clamping nut 5 on a valve holding body 7.
- the valve body 1 has an axial bore 9, in which a piston-shaped valve member 11 is guided axially displaceable, which cooperates at its one end with an inwardly directed valve seat 13 in a combustion chamber-side dome 15, in the downstream of the valve seat 13 a plurality of injection openings 17th are arranged.
- the valve body 1 is a rotationally symmetrical component with an upper thick portion 19 and with a lower, slender shaft portion 21, whose combustion chamber end is closed by the dome 15.
- the arranged in the upper portion 19 of the bore 9 is formed as a guide bore 23 for the guide member 25 of the valve member 11.
- undercut pressure chamber 29 is arranged, whose outer boundary 31 is preferably curved and merges into the annular gap 27.
- a spring 33 inserted in a blind bore of the valve holding body 7 holds the valve member 11 in contact with the valve seat 13 via a spring plate 35 when the injection valve is closed.
- an inlet channel 37 to the pressure chamber 29 For supplying fuel extends in the upper thicker portion 19 of the valve body 1, starting from the upper end face next to the guide bore 23, an inlet channel 37 to the pressure chamber 29.
- the inlet channel 37 cuts the pressure chamber 29 from above to the side.
- the inlet channel 37 extends obliquely to the guide bore 23, wherein the distance of its inlet to the upper end face of the valve body 1 to the axis is greater than the distance of its mouth in the pressure chamber 29, so that the thickness of the intermediate wall 39 near the mouth region of the inlet channel 37 and near the transition of the guide bore 23 into the pressure chamber 29 is small.
- annular shoulder 45 in an embodiment of the fuel injection valve in section a substantially circular shape, on which the annular shoulder 44 tangent to form an annular peripheral support point 60.
- the conical annular shoulder 44 of the clamping nut 5 has two annular shoulder regions which are differently inclined relative to the valve member axis 70, the radially outer annular shoulder region 52 of which rests tangentially on the annular shoulder 45. At this annular shoulder portion 52 connects via an edge 55 a radially inner, a smaller angle with the valve member axis 70 enclosing annular shoulder portion 57, which is constantly exposed.
- annular shoulder 45 on its side facing the annular shoulder 44 two angularly adjacent surfaces 46, 47, whose boundary edge form the annular peripheral support point 60. At this boundary edge of the annular shoulder 44 is applied, which in turn allows a defined friction radius R rub .
- One of the two surfaces 47 passes on its valve member axis 70 side facing in a substantially perpendicular to the valve member axis 70 extending annular end surface 48, which ensures that the clamping nut 5 is not applied to the annular shoulder 45 in this area.
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)
Description
Die Erfindung betrifft ein Kraftstoffeinspritzventil für Brennkraftmaschinen mit einem an einem Ventilhaltekörper festgespannten Ventilkörper, in dem ein Ventilglied in einer Bohrung axial verschiebbar geführt ist, wobei die Bohrung einen radial erweiterten Druckraum aufweist, in den wenigstens ein neben der Bohrung verlaufender Zulaufkanal mündet und mit einer Spannmutter, die mit einer inneren, konisch ausgebildeten Ringschulter an einem in Höhe des Druckraumes angeordneten Ringabsatz des Ventilkörpers anliegend diesen gegen den Ventilhaltekörper verspannt.The invention relates to a fuel injection valve for internal combustion engines with a valve body held in a valve body, in which a valve member is guided axially displaceably in a bore, wherein the bore has a radially expanded pressure chamber into which at least one adjacent to the bore inlet channel opens and with a clamping nut , which clamped with an inner, conical annular shoulder at a height of the pressure chamber arranged annular shoulder of the valve body fitting this against the valve holding body.
Ein derartiges Kraftstoffeinspritzventil geht beispielsweise aus der
Bei diesem Kraftstoffeinspritzventil sind sowohl die Ringschulter der den Ventilkörper axial gegen den Haltekörper verspannenden Spannmutter an ihrem dem Haltekörper abgewandten Ende und der mit dieser zusammenwirkende Ringabsatz am Ventilkörper konisch ausgebildet, wobei der Winkel, den der konische Ringabsatz mit der Ventilgliedachse einschließt, kleiner ist als der Winkel, den die konische Ringschulter mit der Ventilgliedachse einschließt.In this fuel injection valve both the annular shoulder of the valve body axially against the holding body spanning clamping nut at its end facing away from the holding body and cooperating with this annular shoulder on the valve body are conical, wherein the angle which includes the conical annular shoulder with the valve member axis is smaller than that Angle enclosed by the conical annular shoulder with the valve member axis.
Auf diese Weise erreicht man eine lokalisierte, konzentrierte und gleichzeitig der Druckbeanspruchung entgegenwirkende Krafteinleitung auf den Ventilkörper.In this way one achieves a localized, concentrated and at the same time the compressive stress counteracting force on the valve body.
Problematisch bei einem derartigen Kraftstoffeinspritzventil ist es jedoch, daß trotz der konischen Ausbildung von Ringabsatz und Ringschulter mit unterschiedlichen Konuswinkeln nicht gänzlich vermieden werden kann, daß sich der Reibradius beim Anziehen der Spannmutter verändert. Während nämlich vor dem Zusammenbau durch die unterschiedlichen Konuswinkel der konischen Flächen der Spannmutter und des Ventilkörpers noch eine Linienberührung zwischen der Düse und der Spannmutter existiert, kann es beim Anziehen der Spannmutter wegen möglicher Plan-/Schräglauffehler zu örtlich unterschiedlichen Reibradien kommen, indem sich beispielsweise die gegenüber der Düse sehr viel weichere Spannmutterschulter am Umfang unterschiedlich deformiert oder an die Düsenschulter anlegt. Hierdurch verändert sich der Reibradius und als Folge davon die über das Anzugsmoment der Spannmutter erzeugte resultierende Kraft.The problem with such a fuel injection valve, however, is that despite the conical design of annular shoulder and annular shoulder with different cone angles can not be completely avoided that the friction radius changes when tightening the clamping nut. While prior to assembly by the different cone angle of the conical surfaces of the clamping nut and the valve body still exists a line contact between the nozzle and the clamping nut, it may come to tightening the clamping nut because of possible plan / skew errors locally different Reibradien by, for example, the In comparison with the nozzle, a much softer clamping nut shoulder deforms differently on the circumference or attaches to the nozzle shoulder. As a result, the friction radius changes and as a result, the resulting force on the tightening torque of the clamping nut resulting force.
Der Erfindung liegt daher die Aufgabe zugrunde, ein gattungsgemäßes Kraftstoffeinspritzventil dahingehend weiterzubilden, daß der Reibradius und dadurch die über das Anzugsmoment der Spannmutter erzeugte resultierende Kraft möglichst konstant gehalten wird.The invention is therefore the object of developing a generic fuel injection valve to the effect that the friction radius and thereby the torque generated on the tightening torque of the clamping nut resulting force is kept as constant as possible.
Diese Aufgabe wird bei einem Kraftstoffeinspritzventil der eingangs beschriebenen Art erfindungsgemäß dadurch gelöst, daß der Ringabsatz auf seiner der Ringschulter zugewandten Seite derart gekrümmt ausgebildet ist oder genau zwei im Winkel aneinandergrenzende, eine Grenzkante zur Bildung der Auflage an die Ringschulter bildende Flächen aufweist, daß sich in einem vorgegebenen Abstand von der Ventilgliedachse genau ein ringförmig umlaufender Auflagepunkt ergibt, an dem die konische Ringschulter im montierten Zustand anliegt.This object is achieved in a fuel injection valve of the type described above according to the invention that the annular shoulder on its side facing the annular shoulder is curved or exactly two angularly adjacent, an edge to form the support to the annular shoulder surfaces forming that in a given distance from the valve member axis exactly gives an annular circumferential support point at which rests the conical annular shoulder in the assembled state.
Diese gekrümmte Ausbildung des Ringabsatzes auf seiner der Ringschulter zugewandten Seite zur Ausbildung eines in einem vorgegebenen Abstand von der Ventilgliedachse ringförmig umlaufenden Auflagepunktes, an dem die konische Ringschulter im montierten Zustand anliegt, hat den besonders großen Vorteil, daß der Reibradius weitestgehend konstant gehalten wird, da er durch die geometrische Auslegung des Ringabsatzes fixiert ist. Der Reibradius wird insbesondere auch während der Montage und im angezogenen Zustand der Spannmutter konstant gehalten, so daß eine präzise und definierte von dem Anzugsmoment der Spannmutter erzeugte resultierende Kraft auf den Ventilkörper resultiert.This curved design of the annular shoulder on its annular shoulder facing side to form a ring at a predetermined distance from the valve member axis encircling support point at which abuts the conical annular shoulder in the assembled state, has the particularly great advantage that the friction radius is kept largely constant because he is fixed by the geometric design of the ring heel. The friction radius is kept constant, in particular during assembly and in the tightened state of the clamping nut, so that a precise and defined resulting from the tightening torque of the clamping nut resulting force on the valve body.
Neben dem präzise eingestellten Reibradius ist es zudem besonders vorteilhaft, daß sich aufgrund der Auflage der Ringschulter ausschließlich an dem ringförmig umlaufenden Auflagepunkt kleinere Lageungenauigkeiten des Ringabsatzes und der Ringschulter nicht negativ auf die Kräfteverteilung und insbesondere auf die resultierende Kraft, welche die Spannmutter auf den Ventilkörper ausübt, auswirken.In addition to the precisely adjusted friction radius, it is also particularly advantageous that due to the support of the annular shoulder only at the annular peripheral support point minor positional inaccuracies of the annular shoulder and the annular shoulder does not adversely affect the distribution of forces and in particular on the resultant force exerted by the clamping nut on the valve body , impact.
Hinsichtlich der gekrümmten Ausbildung des Ringabsatzes auf seiner der Ringschulter zugewandten Seite sind die unterschiedlichsten Ausführungsformen denkbar.With regard to the curved design of the annular shoulder on its side facing the annular shoulder a variety of embodiments are conceivable.
Eine vorteilhafte Ausführungsform sieht vor, daß der Ringabsatz im Schnitt eine im wesentlichen kreisförmige Gestalt aufweist, an der die Ringschulter unter Ausbildung des ringförmig umlaufenden Auflagepunktes tangentenförmig anliegt.An advantageous embodiment provides that the annular shoulder has a substantially circular shape in section, on which the annular shoulder is tangent-shaped to form the annular peripheral support point.
Durch diese im Schnitt kreisförmige Gestalt der Ringschulter wird auf besonders vorteilhafte Weise eine gleichmäßige und definierte Krafteinleitung ermöglicht.By this circular in cross-section shape of the annular shoulder a uniform and defined application of force is made possible in a particularly advantageous manner.
Bei einer anderen vorteilhaften Ausführungsform ist vorgesehen, daß der Ringabsatz wenigstens zwei im Winkel aneinandergrenzende Flächen aufweist, deren Grenzkante den ringförmig umlaufenden Auflagepunkt bildet.In another advantageous embodiment, it is provided that the annular shoulder has at least two adjoining surfaces at an angle whose boundary edge forms the annular peripheral support point.
Vorzugsweise ist dabei vorgesehen, daß die konische Ringschulter der Spannmutter zwei unterschiedlich geneigte Ringschulterbereiche aufweist, dessen radial außenliegender auf dem ringförmig umlaufenden Auflagepunkt aufliegt, und dessen sich an diesen über eine Kante anschließender radial innenliegender, einen kleineren Winkel zur Ventilgliedachse aufweisender Ringschulterbereich freiliegt.Preferably, it is provided that the conical annular shoulder of the clamping nut has two differently inclined annular shoulder areas, the radially outer lying rests on the annular peripheral bearing point, and which is exposed to these over an edge subsequent radially inner, a smaller angle to the valve member axis exhibiting annular shoulder area.
Weitere Merkmale und Vorteile der Erfindung sind Gegenstand der nachfolgenden Beschreibung sowie der zeichnerichen Darstellung einiger Ausführungsbeispiele.Further features and advantages of the invention are the subject of the following description and the drawings of some embodiments.
In der Zeichnung zeigen:
- Fig. 1
- eine Schnittdarstellung des brennraumseitigen Teils eines erfindungsgemäßen Kraftstoffeinspritzventils;
- Fig. 2
- eine vergrößerte Schnittdarstellung eines Ringabsatzes und einer an ihm anliegenden Ringschulter eines erfindungsgemäßen Kraftstoffeinspritzventils und
- Fig. 3
- eine vergrößerte Schnittdarstellung eines Ringabsatzes und einer an ihm anliegenden Ringschulter einer anderen Auführungsform eines erfindungsgemäßen Kraftstoffeinspritzventils.
- Fig. 1
- a sectional view of the combustion chamber side part of a fuel injection valve according to the invention;
- Fig. 2
- an enlarged sectional view of an annular shoulder and a voltage applied to it annular shoulder of a fuel injection valve according to the invention and
- Fig. 3
- an enlarged sectional view of an annular shoulder and a voltage applied to it annular shoulder another Auführungsform a fuel injection valve according to the invention.
Ein in
Der Ventilkörper 1 weist eine axiale Bohrung 9 auf, in der ein kolbenförmiges Ventilglied 11 axial verschiebbar geführt ist, welches an seinem einen Ende mit einem nach innen gekehrten Ventilsitz 13 in einer brennraumseitigen Kuppe 15 zusammenwirkt, in der stromabwärts hinter dem Ventilsitz 13 mehrere Einspritzöffnungen 17 angeordnet sind.The
Der Ventilkörper 1 ist ein rotationssymmetrisches Bauteil mit einem oberen dicken Abschnitt 19 und mit einem unteren, schlanken Schaftteil 21, dessen brennraumseitiges Ende durch die Kuppe 15 verschlossen ist. Der im oberen Abschnitt 19 angeordnete Teil der Bohrung 9 ist als Führungsbohrung 23 für den Führungsteil 25 des Ventilgliedes 11 ausgebildet.The
Der im Ventilkörperschaft 21 verlaufende Teil der Bohrung 9 begrenzt zusammen mit dem Schaft des Ventilgliedes 11 einen bis zum Ventilsitz 13 reichenden Ringspalt 27. Im oberen Abschnitt 19 ist nahe dem unteren Schaftteil 21 zwischen der Führungsbohrung 23 und dem Ringspalt 27 der Bohrung 9 ein im Durchmesser erweiterter, hinterschnittener Druckraum 29 angeordnet, dessen äußere Begrenzung 31 vorzugsweise gewölbt ist und in den Ringspalt 27 übergeht. Eine in einer Sackbohrung des Ventilhaltekörpers 7 eingesetzte Feder 33 hält das Ventilglied 11 über einen Federteller 35 bei geschlossenem Einspritzventil in Anlage am Ventilsitz 13.In the
Zum Zuführen von Kraftstoff verläuft im oberen dickeren Abschnitt 19 des Ventilkörpers 1, ausgehend von dessen oberer Stirnfläche neben der Führungsbohrung 23 ein Zulaufkanal 37 zum Druckraum 29. Der Zulaufkanal 37 schneidet den Druckraum 29 von oben seitlich an. Um den Durchmesser des Druckraumes 29 möglichst klein und den Querschnitt der Mündung ausreichend groß zu halten, verläuft der Zulaufkanal 37 schräg zur Führungsbohrung 23, wobei der Abstand seines Einlasses an der oberen Stirnfläche des Ventilkörpers 1 zur Achse hin größer ist als der Abstand seiner Mündung in den Druckraum 29, so daß die Dicke der Zwischenwand 39 nahe dem Mündungsbereich des Zulaufkanals 37 und nahe dem Übergang der Führungsbohrung 23 in den Druckraum 29 klein ist.For supplying fuel extends in the upper
Die als Überwurfmutter ausgebildete, hülsenförmige Spannmutter 5, die den oberen Abschnitt 19 des Ventilkörpers 1 übergreifend mit einem Muttergewinde 41 auf ein Schraubengewinde 43 am Ventilhaltekörper 7 aufgeschraubt ist, hat eine innere konische Ringschulter 44, an der sich der Ventilkörper mit einem gekrümmten Ringabsatz 45 im Bereich des Übergangs des oberen Abschnitts 19 in den unteren schlanken Schaftteil 21 abstützt.The trained as a union nut, sleeve-
Wie aus
Die konische Ringschulter 44 der Spannmutter 5 weist in diesem Fall zwei zur Ventilgliedachse 70 unterschiedlich geneigte Ringschulterbereiche auf, dessen radial außenliegender Ringschulterbereich 52 an dem Ringabsatz 45 tangentenförmig anliegt. An diesen Ringschulterbereich 52 schließt sich über eine Kante 55 ein radial innenliegender, einen kleineren Winkel mit der Ventilgliedachse 70 einschließender Ringschulterbereich 57 an, der ständig freiliegt.In this case, the conical
Durch diese Ausbildung des Ringabsatzes 45 und der tangentenförmig an ihm anliegenden Ringschulter 44 ergibt sich ein bezüglich der Ventilgliedachse 70 konstanter Reibradius Rreib, der insbesondere auch im montierten Zustand weitestgehend erhalten bleibt, wodurch die über das Anzugsmoment der Spannmutter 5 erzeugte resultierende Kraft auf den Ventilkörper 1 konstant bleibt.This configuration of the
Bei einer anderen, in
Eine der beiden Flächen 47 geht auf ihrer der Ventilgliedachse 70 zugewandten Seite in eine im wesentlichen senkrecht zur Ventilgliedachse 70 verlaufende Ringstirnfläche 48 über, durch die sichergestellt wird, daß die Spannmutter 5 in diesem Bereich nicht an dem Ringabsatz 45 anliegt.One of the two
Durch die obenbeschriebenen Ausbildungen des Ringabsatzes 45 und der Ringschulter 44 wird ermöglicht, daß ein vorgegebener Reibradius Rreib bei der Montage der Spannmutter 5 weitestgehend eingehalten wird, wodurch sichergestellt wird, daß eine über das Anzugsmoment der Spannmutter 5 erzeugte resultierende Kraft einen definierten und bei der Montage konstanten Wert einhält.By the above-described training the
Claims (4)
- Fuel injection valve for internal combustion engines, with a valve body (1) which is firmly clamped to a valve-holding body (7) and in which a valve member (11) is guided axially displaceably in a bore (9), the bore (9) having a radially widened pressure space (29), into which at least one inflow duct (37) running next to the bore (9) issues, and with a clamping nut (5) which, with an inner conically designed annular shoulder (44) braces the valve body (1) against the valve-holding body (7) by bearing against an annular step (45), arranged level with the pressure space (29), of the said valve body, characterized in that the annular step (45), on its side facing the annular shoulder (44), has a curved design or has exactly two faces, forming a boundary edge for the formation of the bearing on the annular shoulder (44), which adjoin one another at an angle such as to result, at a predetermined distance (Rfrict) from the valve-member axis, in an exactly annularly continuous bearing point (60) against which the conical annular shoulder (44) bears in the mounted state.
- Fuel injection valve according to Claim 1, characterized in that the annular step (45) has, in section, an essentially circular configuration, against which the annular shoulder (44) bears tangentially so as to form the annularly continuous bearing point (60).
- Fuel injection valve according to Claim 2, characterized in that the conical annular shoulder (44) of the clamping nut (5) has two differently inclined shoulder regions (52, 57), of which the radially outer annular-shoulder region (52) lies on the annularly continuous bearing point (60) and of which the radially inner annular-shoulder region (57) adjoining the annularly continuous bearing point (60) via an edge (55) and having a smaller angle to the valve-member axis (70) is free.
- Fuel injection valve according to Claim 1, characterized in that the boundary edge of the at least two faces (46, 47) adjoining one another at an angle forms the annularly continuous bearing point (60).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19729843 | 1997-07-11 | ||
| DE19729843A DE19729843A1 (en) | 1997-07-11 | 1997-07-11 | Fuel injector |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| EP0890734A2 EP0890734A2 (en) | 1999-01-13 |
| EP0890734A3 EP0890734A3 (en) | 2001-10-10 |
| EP0890734B1 EP0890734B1 (en) | 2004-11-03 |
| EP0890734B2 true EP0890734B2 (en) | 2010-07-07 |
Family
ID=7835458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98109405A Expired - Lifetime EP0890734B2 (en) | 1997-07-11 | 1998-05-23 | Fuel injection valve |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0890734B2 (en) |
| JP (1) | JP4181247B2 (en) |
| DE (2) | DE19729843A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19818200A1 (en) | 1998-04-23 | 1999-10-28 | Bosch Gmbh Robert | Fuel injection valve for internal combustion engine |
| DE19956510A1 (en) | 1999-11-25 | 2001-05-31 | Bosch Gmbh Robert | Fuel injection valve for internal combustion engine has axially movable control piston those controls maximum degree valve element opening at least partly in form of piezo-actuator |
| DE19959304A1 (en) | 1999-12-09 | 2001-06-13 | Bosch Gmbh Robert | Fuel injection valve for internal combustion engines |
| DE10018663A1 (en) | 2000-04-14 | 2001-10-25 | Siemens Ag | Injection valve with optimised surface geometry between nozzle body and clamp nut enabling optimised transfer of compression force to nozzle body |
| BR0017320B1 (en) * | 2000-08-21 | 2009-01-13 | needle position sensing device. | |
| DE10114216B4 (en) * | 2001-03-23 | 2006-11-30 | Robert Bosch Gmbh | Yield limit controlled screw connection |
| DE10115325A1 (en) | 2001-03-28 | 2002-10-17 | Bosch Gmbh Robert | Fuel injector, for an IC motor, has a clamp system to hold the injector housing at the base body, with a convex curvature in a ball segment shape at the clamping surface for an increased sealing action |
| DE102009029116A1 (en) | 2009-09-02 | 2011-03-03 | Robert Bosch Gmbh | Fuel injector |
| DE102012217991A1 (en) | 2012-10-02 | 2014-04-03 | Continental Automotive Gmbh | Nozzle assembly for a fluid injector and fluid injector |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2024315A (en) * | 1978-07-01 | 1980-01-09 | Lucas Industries Ltd | Fuel injection nozzle |
| JP2537983Y2 (en) * | 1990-12-21 | 1997-06-04 | 株式会社ゼクセル | Fuel injection nozzle |
| JPH07119583A (en) * | 1993-10-26 | 1995-05-09 | Hino Motors Ltd | Fuel injection nozzle |
| DE19523243B4 (en) * | 1995-06-27 | 2009-04-02 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engines with a clamping nut with a conically formed annular shoulder |
-
1997
- 1997-07-11 DE DE19729843A patent/DE19729843A1/en not_active Withdrawn
-
1998
- 1998-05-23 DE DE59812198T patent/DE59812198D1/en not_active Expired - Lifetime
- 1998-05-23 EP EP98109405A patent/EP0890734B2/en not_active Expired - Lifetime
- 1998-07-08 JP JP19284398A patent/JP4181247B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0890734A3 (en) | 2001-10-10 |
| DE19729843A1 (en) | 1999-01-14 |
| EP0890734A2 (en) | 1999-01-13 |
| JPH1172063A (en) | 1999-03-16 |
| EP0890734B1 (en) | 2004-11-03 |
| JP4181247B2 (en) | 2008-11-12 |
| DE59812198D1 (en) | 2004-12-09 |
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