EP0890734A2 - Kraftstoffeinspritzventil - Google Patents
Kraftstoffeinspritzventil Download PDFInfo
- Publication number
- EP0890734A2 EP0890734A2 EP98109405A EP98109405A EP0890734A2 EP 0890734 A2 EP0890734 A2 EP 0890734A2 EP 98109405 A EP98109405 A EP 98109405A EP 98109405 A EP98109405 A EP 98109405A EP 0890734 A2 EP0890734 A2 EP 0890734A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- ring shoulder
- shoulder
- ring
- valve
- fuel injection
- 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
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
- F02M61/168—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 one on a valve holding body clamped valve body in which a valve member in a bore is axially displaceable, the Bore has a radially expanded pressure chamber, in the at least one next to the hole Inlet channel opens and with a clamping nut that with an inner, conical ring shoulder a ring shoulder arranged at the level of the pressure chamber Valve body adjacent this against the valve holding body tense.
- Such a fuel injection valve works, for example from DE 195 23 243 A1.
- Ring shoulder of the valve body axially against the Retaining body clamping nut on her the End facing away from the holding body and the cooperating with it Ring shoulder on the valve body is conical, where the angle that the conical ring shoulder with the Valve member axis is smaller than the angle, the conical ring shoulder with the valve member axis includes.
- the invention is therefore based on the object generic fuel injection valve in this regard to further develop that the friction radius and thereby the over the tightening torque generated by the clamping nut Force is kept as constant as possible.
- Ring shoulder on average a substantially circular Form on which the ring shoulder under training of the circular circumferential support point tangent is present.
- the boundary edge forms the circular circumferential support point.
- the conical Ring shoulder of the clamping nut two different inclined annular shoulder areas, the radial external on the circular circumferential support point rests, and which is on this over an edge followed by a radially inner one, a smaller one Annular shoulder area at an angle to the valve member axis exposed.
- a fuel injector shown in Fig. 1 for Internal combustion engines has a valve body 1 which with the interposition of an washer 3 by means of a sleeve-shaped clamping nut 5 axially on a valve holding body 7 is tense.
- the valve body 1 has an axial bore 9 in which is a piston-shaped valve member 11 axially displaceable is led, which at one end with one after inside valve seat 13 in a combustion chamber side Hill 15 cooperates in the downstream behind the Valve seat 13 arranged a plurality of injection openings 17 are.
- the valve body 1 is a rotationally symmetrical component with an upper thick section 19 and with a lower, slender shaft part 21, the combustion chamber side End is closed by the crest 15.
- the one in Upper section 19 is arranged part of the bore 9 as a guide hole 23 for the guide part 25 of the Valve member 11 formed.
- the part of the bore extending in the valve body shaft 21 9 delimits together with the stem of the valve member 11 an annular gap 27 extending to the valve seat 13.
- Im upper section 19 is near lower shaft part 21 between the guide bore 23 and the annular gap 27 of the Bore 9 an undercut enlarged in diameter Pressure chamber 29 arranged, the outer boundary 31st is preferably curved and merges into the annular gap 27.
- One in a blind bore of the valve holding body 7 inserted spring 33 holds the valve member 11 via a Spring plate 35 with the injector closed System on valve seat 13.
- the inlet channel 37 cuts the pressure chamber 29 laterally from above. To the Diameter of the pressure chamber 29 as small as possible and To keep the cross-section of the mouth sufficiently large, The inlet channel 37 runs obliquely to the guide bore 23, the distance of its inlet at the top End face of the valve body 1 is larger towards the axis than the distance of its mouth into the pressure chamber 29, so that the thickness of the intermediate wall 39 is close to the mouth area of the inlet channel 37 and near the transition of Guide bore 23 in the pressure chamber 29 is small.
- Tension nut 5 covering the upper portion 19 of the valve body 1 overlapping with a nut thread 41 on Screw thread 43 screwed onto the valve holding body 7 has an inner conical annular shoulder 44 on which the valve body with a curved ring shoulder 45 in the area of the transition of the upper section 19 in the supports lower slender shaft part 21.
- the ring shoulder has 45 in one embodiment of the fuel injector an essentially circular section Form on which the ring shoulder 44 under training an annular circumferential support point 60 is tangent-shaped.
- the conical ring shoulder 44 of the clamping nut 5 points in In this case, two different from the valve member axis 70 inclined ring shoulder areas, the radially outer Ring shoulder area 52 on ring shoulder 45 is tangent-shaped. At this ring shoulder area 52 closes over an edge 55 a radially inner, a smaller angle with the valve member axis 70 including ring shoulder area 57 which is constantly exposed.
- the ring shoulder 45 has, on its side facing the ring shoulder 44, two surfaces 46, 47 adjoining one another at an angle, the boundary edge of which forms the annular support point 60.
- the annular shoulder 44 bears against this boundary edge, which in turn enables a defined friction radius R rub .
- One of the two surfaces 47 goes on the valve member axis 70 facing side in one essentially Ring face extending perpendicular to the valve member axis 70 48 through which it is ensured that the Clamping nut 5 in this area not on the ring shoulder 45 is present.
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
- 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.
Claims (4)
- Kraftstoffeinspritzventil für Brennkraftmaschinen, mit einem an einem Ventilhaltekörper (7) festgespannten Ventilkörper (1), in dem ein Ventilglied (11) in einer Bohrung (9) axial verschiebbar geführt ist, wobei die Bohrung (9) einen radial erweiterten Druckraum (29) aufweist, in den wenigstens ein neben der Bohrung (9) verlaufender Zulaufkanal (37) mündet und mit einer Spannmutter (5), die mit einer inneren, konisch ausgebildeten Ringschulter (45) an einem in Höhe des Druckraumes (29) angeordneten Ringabsatz (45) des Ventilkörpers (1) anliegend diesen gegen den Ventilhaltekörper (7) verspannt, dadurch gekennzeichnet, daß der Ringabsatz (45) auf seiner der Ringschulter (44) zugewandten Seite derart gekrümmt ausgebildet ist, daß sich in einem vorgegebenen Abstand (Rreib) von der Ventilgliedachse ein ringförmig umlaufender Auflagepunkt (60) ergibt, an dem die konische Ringschulter (44) im montierten Zustand anliegt.
- Kraftstoffeinspritzventil nach Anspruch 1, dadurch gekennzeichnet, daß der Ringabsatz (45) im Schnitt eine im wesentlichen kreisförmige Gestalt aufweist, an der die Ringschulter (44) unter Ausbildung des ringförmig umlaufenden Auflagepunktes (60) tangentenförmig anliegt.
- Kraftstoffeinspritzventil nach Anspruch 2, dadurch gekennzeichnet, daß die konische Ringschulter (45) der Spannmutter (5) zwei unterschiedlich geneigte Schulterbereiche (52, 57) aufweist, dessen radial außenliegender Ringschulterbereich (52) auf dem ringförmig umlaufenden Auflagepunkt (60) aufliegt und dessen sich an diesen über eine Kante (55) anschließender radial innenliegender, einen kleineren Winkel zur Ventilgliedachse (70) aufweisender Ringschulterbereich (57) freiliegt.
- Kraftstoffeinspritzventil nach Anspruch 1, dadurch gekennzeichnet, daß der Ringabsatz (45) wenigstens zwei im Winkel aneinandergrenzende Flächen (46, 47) aufweist, deren Grenzkante den ringförmig umlaufenden Auflagepunkt (60) bildet.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19729843 | 1997-07-11 | ||
DE19729843A DE19729843A1 (de) | 1997-07-11 | 1997-07-11 | Kraftstoffeinspritzventil |
Publications (4)
Publication Number | Publication Date |
---|---|
EP0890734A2 true EP0890734A2 (de) | 1999-01-13 |
EP0890734A3 EP0890734A3 (de) | 2001-10-10 |
EP0890734B1 EP0890734B1 (de) | 2004-11-03 |
EP0890734B2 EP0890734B2 (de) | 2010-07-07 |
Family
ID=7835458
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98109405A Expired - Lifetime EP0890734B2 (de) | 1997-07-11 | 1998-05-23 | Kraftstoffeinspritzventil |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0890734B2 (de) |
JP (1) | JP4181247B2 (de) |
DE (2) | DE19729843A1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001079689A2 (de) * | 2000-04-14 | 2001-10-25 | Siemens Aktiengesellschaft | Einspritzventil mit optimierter flächengeometrie zwischen einem düsenkörper und einer spannmutter |
WO2002077443A1 (de) * | 2001-03-28 | 2002-10-03 | Robert Bosch Gmbh | Kraftstoff-einspritzvorrichtung, insbesondere injektor, für brennkraftmaschinen |
DE102009029116A1 (de) | 2009-09-02 | 2011-03-03 | Robert Bosch Gmbh | Kraftstoffeinspritzvorrichtung |
WO2014053375A1 (de) * | 2012-10-02 | 2014-04-10 | Continental Automotive Gmbh | Düsenbaugruppe für einen fluidinjektor und fluidinjektor |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19818200A1 (de) | 1998-04-23 | 1999-10-28 | Bosch Gmbh Robert | Kraftstoffeinspritzventil |
DE19956510A1 (de) | 1999-11-25 | 2001-05-31 | Bosch Gmbh Robert | Kraftstoffeinspritzventil für Brennkraftmaschinen |
DE19959304A1 (de) | 1999-12-09 | 2001-06-13 | Bosch Gmbh Robert | Kraftstoffeinspritzventil für Brennkraftmschinen |
WO2002016757A1 (en) * | 2000-08-21 | 2002-02-28 | Volvo Lastvagnar Ab | Needle position sensing device |
DE10114216B4 (de) * | 2001-03-23 | 2006-11-30 | Robert Bosch Gmbh | Streckgrenzengesteuerte Schraubverbindung |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19523243A1 (de) | 1995-06-27 | 1997-01-02 | Bosch Gmbh Robert | Kraftstoffeinspritzventil für Brennkraftmaschinen |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2024315A (en) * | 1978-07-01 | 1980-01-09 | Lucas Industries Ltd | Fuel injection nozzle |
JP2537983Y2 (ja) * | 1990-12-21 | 1997-06-04 | 株式会社ゼクセル | 燃料噴射ノズル |
JPH07119583A (ja) * | 1993-10-26 | 1995-05-09 | Hino Motors Ltd | 燃料噴射ノズル |
-
1997
- 1997-07-11 DE DE19729843A patent/DE19729843A1/de not_active Withdrawn
-
1998
- 1998-05-23 DE DE59812198T patent/DE59812198D1/de not_active Expired - Lifetime
- 1998-05-23 EP EP98109405A patent/EP0890734B2/de not_active Expired - Lifetime
- 1998-07-08 JP JP19284398A patent/JP4181247B2/ja not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19523243A1 (de) | 1995-06-27 | 1997-01-02 | Bosch Gmbh Robert | Kraftstoffeinspritzventil für Brennkraftmaschinen |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001079689A2 (de) * | 2000-04-14 | 2001-10-25 | Siemens Aktiengesellschaft | Einspritzventil mit optimierter flächengeometrie zwischen einem düsenkörper und einer spannmutter |
WO2001079689A3 (de) * | 2000-04-14 | 2002-03-14 | Siemens Ag | Einspritzventil mit optimierter flächengeometrie zwischen einem düsenkörper und einer spannmutter |
US6799748B2 (en) | 2000-04-14 | 2004-10-05 | Siemens Aktiengesellschaft | Injection valve comprising an optimized surface geometry between a nozzle body and a retaining nut |
US6938880B2 (en) | 2000-04-14 | 2005-09-06 | Siemens Aktiengesellschaft | Injection valve comprising an optimized surface geometry between a nozzle body and a retaining nut |
WO2002077443A1 (de) * | 2001-03-28 | 2002-10-03 | Robert Bosch Gmbh | Kraftstoff-einspritzvorrichtung, insbesondere injektor, für brennkraftmaschinen |
US6994280B2 (en) | 2001-03-28 | 2006-02-07 | Robert Bosch Gmbh | Fuel injection device for internal combustion engines |
DE102009029116A1 (de) | 2009-09-02 | 2011-03-03 | Robert Bosch Gmbh | Kraftstoffeinspritzvorrichtung |
WO2011026689A1 (de) | 2009-09-02 | 2011-03-10 | Robert Bosch Gmbh | Kraftstoffeinspritzvorrichtung |
WO2014053375A1 (de) * | 2012-10-02 | 2014-04-10 | Continental Automotive Gmbh | Düsenbaugruppe für einen fluidinjektor und fluidinjektor |
US10107246B2 (en) | 2012-10-02 | 2018-10-23 | Continental Automotive Gmbh | Nozzle assembly for a fluid injector and fluid injector |
Also Published As
Publication number | Publication date |
---|---|
EP0890734B1 (de) | 2004-11-03 |
DE19729843A1 (de) | 1999-01-14 |
JP4181247B2 (ja) | 2008-11-12 |
EP0890734A3 (de) | 2001-10-10 |
EP0890734B2 (de) | 2010-07-07 |
JPH1172063A (ja) | 1999-03-16 |
DE59812198D1 (de) | 2004-12-09 |
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