EP1395748B1 - Hochdruckdichtelement für injektoren - Google Patents
Hochdruckdichtelement für injektoren Download PDFInfo
- Publication number
- EP1395748B1 EP1395748B1 EP02735073A EP02735073A EP1395748B1 EP 1395748 B1 EP1395748 B1 EP 1395748B1 EP 02735073 A EP02735073 A EP 02735073A EP 02735073 A EP02735073 A EP 02735073A EP 1395748 B1 EP1395748 B1 EP 1395748B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sealing element
- injector
- pressure chamber
- pressure
- insert part
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 73
- 239000000446 fuel Substances 0.000 claims abstract description 38
- 238000002485 combustion reaction Methods 0.000 claims abstract description 12
- 239000007769 metal material Substances 0.000 claims description 18
- 239000000956 alloy Substances 0.000 claims description 8
- 229910045601 alloy Inorganic materials 0.000 claims description 7
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims 1
- 238000002347 injection Methods 0.000 abstract description 20
- 239000007924 injection Substances 0.000 abstract description 20
- 238000005553 drilling Methods 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 9
- 230000002093 peripheral effect Effects 0.000 description 6
- 239000004809 Teflon Substances 0.000 description 4
- 229920006362 Teflon® Polymers 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910000906 Bronze Inorganic materials 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000012549 training 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
- F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
- F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
- F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for
-
- 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
- F02M2547/00—Special features for fuel-injection valves actuated by fluid pressure
- F02M2547/003—Valve inserts containing control chamber and valve piston
Definitions
- Fuel injection systems for air-compressing internal combustion engines come today injection systems with high-pressure accumulation space (Common Rail) are used.
- the Fuel injection systems further include injectors for injecting fuel into the combustion chambers of the internal combustion engine, the in the fuel injection system prevailing pressures in terms of tightness and material resistance.
- annular sealing elements are used on injectors with which a seal of the high pressure area of the injector against low areas Pressure of the injector is made. Will the pressure level in fuel injection systems for generating a higher thermodynamic efficiency of the internal combustion engine raised, the demands on the sealing elements of the Fuel injector.
- EP-A 0 483 770 relates to a high-pressure sealing system for the control valve of an electromagnetic Fuel injection valve for internal combustion engines.
- This high pressure seal system comprises a sealing ring made of a deformable material between a pair of substantially parallel surfaces of the valve body and a Hollow body is compressed. These surfaces are with a high degree of precision edited in order to achieve a minimum margin.
- a fuel injection valve for high-pressure injection.
- the High-pressure injection is used in self-igniting internal combustion engines and the Control of injection includes a solenoid valve.
- a control circuit is provided which is in a first circuit part and a split second circuit part.
- the second circuit part is of the first circuit part, which together serves to control multiple injectors, separated on each arranged individual injection valve.
- the housing is clipped onto the fuel injection valve and traversed inside the fuel for cooling.
- a sealing ring made of bronze-reinforced Teflon and a metallic support ring are inserted between the housing and a recessed in this insert below the control room.
- the support ring of metallic material is required to improve the sealing effect of the bronze reinforced Teflon ring and to prevent the extrusion of the bronze reinforced Teflon ring.
- appropriate measures must be taken.
- a further injection valve according to the preamble of claim 1 is shown in WO 99 37 909 A. Presentation of the invention
- the solution according to the invention can be compared to that of the prior art known solution on the one hand to save a component and on the other hand in the pressure chamber prevailing pressure at high pressure loading e.g. via the inlet from the high-pressure collecting chamber (Common rail) to support the sealing force of the sealing element deploy.
- the sealing element according to the proposed invention frictionally by means of a press fit on a recessed in the injector housing of the fuel injector Shrunk insert is a manufacturing technology particularly easy to produce solution given.
- the sealing element Due to the one-piece design of the sealing element can be an uncomplicated installation be achieved; In addition, this offers by means of a press fit on the lateral surface of the insert part fastenable sealing element a Abdichtpotential, which also further pressure level increases withstand in the fuel injector of fuel injection systems, so that as well at further increasing pressures, the sealing of the high pressure region of the pressure chamber is ensured at the fuel injector.
- the sealing of the high-pressure region of the fuel injector is preferably carried out with a Press fit between the sealing element inner diameter and valve element / ram / or Nozzle needle OD differences between 0.04 to 0.15 mm.
- Figure 1 is a longitudinal section through the components of a fuel injector and the Injector housing to remove.
- the representation according to FIG. 1 can be taken from that in a fuel injection system inserted fuel injector 1 for injecting fuel an injector 2 includes.
- the injector housing 2 of the fuel injector 1 contains a pressure chamber 3, from whose pressure chamber bottom 5 extends from a bore 6 through the injector housing 2.
- the bore 6 is penetrated by a rotationally symmetrical insert part 7.
- the insert 7 may in its axial extent of a cylindrical cross section in go over a frusto-conical tapered paragraph. Between the circumference 8 of the insert 7 and the wall of the bore 6 is required for assembly reasons Annular gap 18.
- an injection valve member 26 for example formed as a valve piston shown in Figure 1, received in accordance with of the double arrow shown in Figure 1, reference numeral 47, a vertical Lifting movement for opening / closing of injection openings, not shown in Figure 1 at the combustion chamber end of the fuel injector 1 is used.
- the formed in the interior of the injector 2 pressure chamber 3 is except through the Pressure chamber bottom 5 bounded by the wall 4 of the injector 2.
- the pressure chamber 3 is a high-pressure inlet 21 shown in dashed lines, which at an estuarine point 20 opens into the pressure chamber 3, with the high pressure port 22 of the high pressure source in connection.
- the mouth 20 of the high pressure inlet 21 is preferred at a strength-optimized location of the wall 4 of the pressure chamber 3 in the interior the injector housing 2.
- a sealing element 9 is received, which by the in the pressure chamber 3 prevailing high pressure on the one edition 17 forming Pressure chamber bottom 5 is pressed.
- the pressure prevailing in the pressure chamber 3 high pressure acts on the integrally formed sealing element 9 at the first annular surface 12, which represents the effective hydraulic pressure for the upcoming hydraulic pressure force.
- the sealing element 9 is preferably formed in one piece and of annular shape.
- the integrally formed sealing element 9 is connected by a non-positive connection 14, for example a press fit, received on the circumference 8 of the insert part 7.
- the Press fit 14 is made by differences in the inner diameter of the one-piece formed sealing element 9 and the outer diameter of the insert 7 causes which can be between 0.04 to 0.15 mm.
- the one-piece ring element which is preferably made of metallic material or an alloy of metallic materials exists, it can be shrunk onto the circumference 8 of the insert part 7.
- the integrally formed sealing element 9 may e.g. made of aluminum or an aluminum alloy consist.
- Between the peripheral surface 8 of the insert part 7 and the inner diameter the one-piece sealing element 9 made of metallic material can be a non-positive Connection in the form of a press fit 14 by cold pressing of the metallic Material manufactured sealing element 9 on the peripheral surface 8 of the insert part 7 done.
- a corresponding radial force which the strength of the press fit 14 between insert 7 and integrally formed Sealing element 9 determined.
- the sealing element 9 has a first annular surface 12 which is the Assigns pressure chamber 3 and another, the pressure chamber bottom 5 zu josde second ring surface.
- the pressure chamber bottom acts as a support 17 which a between the peripheral surface 8 of the insert part 7 and the bore 6 within the injector 2 required for assembly reasons Annular gap 18 sealing closes.
- the sealing effect of the sealing element 9 is determined by the increased in the pressure chamber 3 pending fuel pressure, since in the pressure chamber. 3 prevailing pressure in the direction 19 (see illustration according to Figure 2), the sealing element 9 acted upon in the direction of the pressure chamber bottom 5 of the pressure chamber.
- the control chamber 25 is on the one hand by the insert part 7 and on the other hand by a in this guided valve component 26, for example, designed as a valve piston can be limited.
- a in this guided valve component 26 may have a contour 26.1 exhibit.
- a frusto-conical Form area 26.2 which has a complementarily shaped conical area 27.1 at the outlet 27 on the outlet side of the control chamber 27 cooperates.
- From the control room 25 extends from a drain 27, in which a flow restrictor 28 is received is.
- the outlet throttle 28, via which upon actuation of a here designed as a spherical body Closing element 29 a pressure relief of the control chamber 25 is brought about is on End of the expiration 27 arranged. That the outlet throttle 28 releasing or closing Schliesselement 29 is partially surrounded by a molding 30, which at a lower end face of an anchor part 31 of a magnet arrangement for actuating the fuel injector 1 is arranged.
- the anchor part 31 is formed integrally and comprises a bolt part and a plate-shaped configured part.
- the fastening screw 33 is screwed into an internal thread 45 of the injector housing 2 and is located at an upper End face 32 of the insert part 7 at.
- anchor member 31 of the actuator assembly is acted upon by a spring element 35, which is guided in a sleeve.
- the sleeve 35 surrounding the spring element is surrounded by a magnetic coil 36, the in turn can be accommodated in a magnet sleeve 37.
- On the outer peripheral surface the magnet sleeve 37 is an annular projection 38 formed on which a union nut 39 is applied.
- the magnet sleeve 37 is screwed through the union nut 39 with an external thread 40 on the outside of the injector 2 of the Fuel injector 1 causes.
- the integrally formed armature part 31 of the actuator assembly is partially in one Insert sleeve 41 out, with the interposition of a spacer ring 42 via the magnet sleeve 38 is fixed, which in turn via the union nut 39 on the external thread 40 of the injector 2 is fixed.
- an O-ring Made of elastic material executable sealing element 43 is between the magnet sleeve 38 and the injector housing 2, which are connected to each other via the union nut 39.
- a Bore 44 is formed, which via a connection not shown here with the high pressure port 22 is the high-pressure source of the fuel injector 1 in fluid communication and a nozzle space also not shown in Figure 1, which is also not shown Injector valve member surrounds, acted upon by high pressure fuel.
- the injection valve member serving as a nozzle needle with the combustion chamber side seat may be formed, is actuated by a pressure relief of the control chamber 25, the by the by means of the fixing screw 33 in the injector 2 fixed insert part. 7 on the one hand and by the valve component 26 on the other hand limited.
- the pressure relief / pressurization the control chamber 25 is effected by an actuation of the solenoid valve arrangement, e.g. via the energization of the solenoid coil 36.
- FIG. 2 shows a reproduction of the detail Z according to FIG. 1 on an enlarged scale.
- the sealing element 9 On the circumference 8 of the fixed by means of the fastening screw 33 in the injector 2 insert part 7, the sealing element 9 by a frictional connection 14 in shape attached to a press fit.
- sealing element 9 causes a pressing of the metallic or alloys of metallic materials existing sealing element 9 to the pressure chamber bottom 5, i. is an increase in sealing force between the insert 7 and the injector 2 low.
- Outer diameter of the sealing element 9 is identified by reference numeral 10, while the inner diameter 11, with the outer diameter of the insert 7, the non-positive connection 14 in the form of a press fit causes, and the outer diameter 10 opposite.
- annularly shaped sealing element. 9 for sealing the annular gap 18 between insert 7 and the bore 6 within the Injector 2 chamfers 15 and 16 may be formed.
- the Shape may be shaped such that the end face of the valve component 26 has a frustoconical Section 26.2, with a complimentarily formed drain cone. 27 of the sequence 27 protrudes. On the outer circumferential surface of the valve component 26 one or more annular grooves, as shown in Figure 2, are formed.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
- Figur 1
- einen Längsschnitt durch die Komponenten eines Kraftstoffinjektors sowie des Injektorgehäuses und
- Figur 2
- eine Wiedergabe des Details Z aus Figur 1 in vergrößertem Maßstab.
- 1
- Injektor
- 2
- Injektorgehäuse
- 3
- Druckkammer
- 4
- Druckkammerwandung
- 5
- Druckkammerboden
- 6
- Bohrung
- 7
- Einsatzteil
- 8
- Umfangsfläche
- 9
- Dichtelement
- 10
- Außendurchmesser
- 11
- Innendurchmesser
- 12
- erste Ringfläche
- 13
- zweite Ringfläche
- 14
- kraftschlüssige Verbindung (Presssitz)
- 15
- Fase
- 16
- Fase
- 17
- Auflage
- 18
- Ringspalt
- 19
- Druckrichtung
- 20
- Mündungsstelle Hochdruckzulauf
- 21
- Hochdruckzulauf
- 22
- Hochdruckanschluss
- 23
- Einlauftrichter
- 24
- Zulaufdrossel
- 25
- Steuerraum
- 26
- Ventilkomponente
- 26.1
- Stirnflächen-Kontur
- 26.2
- kegelstumpfförmiger Bereich
- 27
- Ablaufkanal
- 27.1
- Ablaufkanalkegel
- 28
- Ablaufdrossel
- 29
- Schliesselement
- 30
- Formkörper
- 31
- Ankerteil (einteilig)
- 32
- Stirnseite des Einsatzteiles 7
- 33
- Befestigungsschraube
- 34
- Anlagefläche Stirnseite 32 am Injektorgehäuse 2
- 35
- Federelement
- 36
- Magnetspule
- 37
- Magnethülse
- 38
- ringförmiger Vorsprung
- 39
- Überwurfmutter
- 40
- Aussengewinde Injektorgehäuse 2
- 41
- Einsatzhülse
- 42
- Distanzring
- 43
- elastisches Dichtelement
- 44
- Zulaufbohrung
- 45
- Innengewinde Injektorgehäuse 2
- 46
- Bohrungsabschnitt von Bohrung 6
- 47
- Hubbewegung
Claims (8)
- Injektor zum Einspritzen von Kraftstoff in den Brennraum einer Verbrennungskraftmaschine, mit einem Injektorgehäuse (1), in welchem eine ein Einsatzteil (7) umschliessende Druckkammer (3) mit einem Druckkammerboden (5) ausgebildet ist, die über eine Hochdruckzulauf (21) mit unter hohem Druck stehenden Kraftstoff befüllbar ist und über die ein Steuerraum (25) druckbeaufschlagbar ist, der von dem in Injektorgehäuse (2) in einer Bohrung (6, 46) fixierten Einsatzteil (7) und einer Ventilkomponente (26) begrenzt wird, wobei die Ventilkomponente (26) innerhalb des Einsatzteiles (7) eine Hubbewegung (47) ausführt, wobei am Umfang (8) des Einsatzteiles (7) ein einteiliges Dichtelement (9) aufgenommen ist, wobei das Dichtelement (9) eine erste Ringfläche (12) der Druckkammer (3) zuweist, die dem in der Druckkammer (3) herrschenden Hochdruck ausgesetzt ist und wobei das Dichtelement (9) mit einer zweiten, der ersten Ringfläche (12) gegenüberliegende Ringfläche (13) an dem Druckkammerboden (5) auf liegt, dadurch gekennzeichnet, dass das Dichtelement (9) metallisch ist und am Umfang des Einsatzteiles (7) in kraftschlüssiger Verbindung (14) aufgenommen ist.
- Injektor gemäß Anspruch 1, dadurch gekennzeichnet, dass das Dichtelement (9) aus metallischem Werkstoff oder Legierungen metallischer Werkstoffe gefertigt ist.
- Injektor gemäß Anspruch 2, dadurch gekennzeichnet, dass das Dichtelement (9) als Aluminiumring gefertigt wird.
- Injektor gemäß Anspruch 1, dadurch gekennzeichnet, dass das einteilige Dichtelement (9) durch einen Presssitz (14) am Umfang des Einsatzteiles (7) aufgenommen ist.
- Injektor gemäß Anspruch 4, dadurch gekennzeichnet, dass die Durchmesserunterschiede zwischen Innendurchmesser (11) des Dichtelementes (9) und dem Aussendurchmesser des Einsatzteiles (7) zwischen 0,04 bis 0,15 mm betragen.
- Injektor gemäß Anspruch 1, dadurch gekennzeichnet, dass bei Anlage der zweiten Ringfläche (13) des einteiligen Dichtelementes (9) am Druckkammerboden (5) der Druckkammer (3) ein Ringspalt (18) zwischen dem Einsatzteil (7) und der Bohrung (6) innerhalb des Injektorgehäuses (2) verschlossen ist.
- Injektor gemäß Anspruch 1, dadurch gekennzeichnet, dass die im Injektorgehäuse (2) ausgebildete Druckkammer (3) in ihrem oberen Bereich durch eine zwischen einer Ringfläche des Einsatzteiles (7) und einer Begrenzungsfläche eines Bohrungsabschnittes (46) gebildete Dichtstelle (34) abgedichtet ist, deren Dichtkraft über ein im Injektorgehäuse (2) aufnehmbares Befestigungselement (33) definiert ist.
- Injektor gemäß Anspruch 1, dadurch gekennzeichnet, dass die Druckkammer (3) durch eine Wandung (4) innerhalb des Injektorgehäuses (2) begrenzt ist, die einen im Durchmesser erweiterten Abschnitt aufweist, in welcher eine Mündungsstelle (20) eines Hochdruckzulaufes (21) liegt.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10124602 | 2001-05-21 | ||
DE10124602 | 2001-05-21 | ||
DE10220457 | 2002-05-07 | ||
DE10220457A DE10220457A1 (de) | 2001-05-21 | 2002-05-07 | Hochdruckdichtelement für Injektoren |
PCT/DE2002/001841 WO2002095217A1 (de) | 2001-05-21 | 2002-05-21 | Hochdruckdichtelement für injektoren |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1395748A1 EP1395748A1 (de) | 2004-03-10 |
EP1395748B1 true EP1395748B1 (de) | 2005-05-18 |
Family
ID=26009348
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02735073A Expired - Lifetime EP1395748B1 (de) | 2001-05-21 | 2002-05-21 | Hochdruckdichtelement für injektoren |
Country Status (4)
Country | Link |
---|---|
US (1) | US6845756B2 (de) |
EP (1) | EP1395748B1 (de) |
JP (1) | JP4181419B2 (de) |
WO (1) | WO2002095217A1 (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10259950A1 (de) * | 2002-12-20 | 2004-07-01 | Robert Bosch Gmbh | Steuerventil für Injektoren, insbesondere Common-Rail-Injektoren von Brennkraftmaschinen |
DE102004015133A1 (de) * | 2003-11-03 | 2005-06-02 | Robert Bosch Gmbh | Injektor |
JP2005248846A (ja) * | 2004-03-04 | 2005-09-15 | Bosch Automotive Systems Corp | 燃料通路のシール構造及びそのシール構造を備えた燃料噴射弁 |
JP2005248847A (ja) * | 2004-03-04 | 2005-09-15 | Bosch Automotive Systems Corp | 燃料通路のシール構造及びそのシール構造を備えた燃料噴射弁 |
DE102004024527A1 (de) * | 2004-05-18 | 2005-12-15 | Robert Bosch Gmbh | Kraftstoffeinspritzeinrichtung |
EP1612403B1 (de) * | 2004-06-30 | 2007-01-10 | C.R.F. Società Consortile per Azioni | Servoventil zum Steuern eines Einspritzventils einer Brennkraftmaschine |
WO2006042488A1 (de) * | 2004-10-21 | 2006-04-27 | Robert Bosch Gmbh | Kraftstoffinjektor |
DE102005015735A1 (de) * | 2005-04-06 | 2006-10-12 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE102005016010A1 (de) * | 2005-04-07 | 2006-10-12 | Robert Bosch Gmbh | Ventil zur Steuerung eines Einspritzventils einer Brennkraftmaschine |
DE102005026513A1 (de) * | 2005-06-09 | 2006-12-14 | Robert Bosch Gmbh | Ventil zur Steuerung eines Einspritzventils einer Brennkraftmaschine |
CN100412353C (zh) * | 2006-08-02 | 2008-08-20 | 北京理工大学 | 一种高压共轨电控喷油器密封装置 |
US7866575B2 (en) * | 2009-01-12 | 2011-01-11 | GM Global Technology Operations LLC | Pressure actuated fuel injector |
TR201108147A2 (tr) * | 2011-08-16 | 2013-01-21 | Robert Bosch Gmbh | Etkin sızdırmazlık özelliğine sahip bir enjeksiyon valfı. |
US9856844B2 (en) * | 2015-04-28 | 2018-01-02 | MAGNETI MARELLI S.p.A. | Fuel pump for a direct injection system with a better hydraulic sealing of the intake valve |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1232026B (it) * | 1989-02-28 | 1992-01-23 | Weber Srl | Dispositivo di iniezione del combustibile ad azionamento elettromagne tico per motori a ciclo diesel |
IT220661Z2 (it) * | 1990-10-31 | 1993-10-08 | Elasis Sistema Ricerca Fita Nel Mezzogiorno Soc.Consortile P.A. | Perfezionamenti al sistema di tenuta ad alta pressione della valvola pilota di un iniettore elettromagnetico per sistemi di iniezione del combustibile di motori a combustione interna |
IT1293434B1 (it) * | 1997-07-11 | 1999-03-01 | Elasis Sistema Ricerca Fiat | Dispositivo di tenuta tra due vani soggetti a pressioni diverse, ad esempio in un inietttore di combustibile per motori a comustione |
DE19802244A1 (de) * | 1998-01-22 | 1999-07-29 | Bosch Gmbh Robert | Kraftstoffeinspritzventil für Brennkraftmaschinen |
-
2002
- 2002-05-21 JP JP2002591658A patent/JP4181419B2/ja not_active Expired - Fee Related
- 2002-05-21 WO PCT/DE2002/001841 patent/WO2002095217A1/de active IP Right Grant
- 2002-05-21 EP EP02735073A patent/EP1395748B1/de not_active Expired - Lifetime
- 2002-05-21 US US10/333,357 patent/US6845756B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2004519620A (ja) | 2004-07-02 |
US20040021011A1 (en) | 2004-02-05 |
WO2002095217A1 (de) | 2002-11-28 |
JP4181419B2 (ja) | 2008-11-12 |
US6845756B2 (en) | 2005-01-25 |
EP1395748A1 (de) | 2004-03-10 |
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