EP1106817A2 - Soupape à géométrie de butée améliorée - Google Patents

Soupape à géométrie de butée améliorée Download PDF

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Publication number
EP1106817A2
EP1106817A2 EP00124911A EP00124911A EP1106817A2 EP 1106817 A2 EP1106817 A2 EP 1106817A2 EP 00124911 A EP00124911 A EP 00124911A EP 00124911 A EP00124911 A EP 00124911A EP 1106817 A2 EP1106817 A2 EP 1106817A2
Authority
EP
European Patent Office
Prior art keywords
valve
stop
opening
valve needle
needle
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.)
Withdrawn
Application number
EP00124911A
Other languages
German (de)
English (en)
Inventor
Bernhard Fischer
Bernhard Dr. Gottlieb
Andreas Dr. Kappel
Randolf Dr. Mock
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP1106817A2 publication Critical patent/EP1106817A2/fr
Withdrawn legal-status Critical Current

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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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/0603—Injectors peculiar thereto with means directly operating the valve needle using piezoelectric or magnetostrictive operating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/08—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series the valves opening in direction of fuel flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • 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
    • F02M61/161—Means for adjusting injection-valve lift
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
    • F02M63/0075—Stop members in valves, e.g. plates or disks limiting the movement of armature, valve or spring

Definitions

  • the invention relates to a valve with a valve needle, the an injection opening opens depending on the position or closes, the valve needle when the injection opening is open with a defined opening stroke to a stop is movable in the system.
  • Appropriate valves are used for dispensing liquids in various technical areas, especially in the Automotive technology for injecting fuel into a Internal combustion engine used.
  • the quantity to be dispensed is the opening cross-section in addition to the opening time and the pressure under which the liquid to be dispensed is important.
  • the opening cross section is, for example for valves that open outwards by the seat diameter of the valve and influenced by the valve lift.
  • the fuel pressure is 100 to 300 bar and with injection valves opening outwards the seat diameter is 4 mm on.
  • a valve lift is the valve needle on the order of 25 ⁇ m is sufficient to provide a required to ensure static fuel flow of 50 g / s at 250 bar.
  • a precise adjustment of the valve stroke is therefore Precondition for a precise dimensioning of the valve amount of liquid to be dispensed.
  • Valves in the form of fuel injection valves are known where a mechanical stop e.g. in form of a Slotted disc or in the form of a stop disc is.
  • the mechanical stop is in these embodiments at the end of the valve needle.
  • the object of the invention is an easy to manufacture Valve with a precisely adjusted valve lift to provide.
  • the valve of claim 1 has the advantage that both the Stop for the valve needle and the stop element of the Valve needle already formed before the valve is installed are and can therefore be manufactured precisely. This also offers Valve according to claim 1 the advantage that the stop so close can be formed as necessary on the valve seat and thus the Influence of thermal or elastic changes in length of the housing or the valve needle can be reduced to a minimum. In addition, the valve according to claim 1 is easy to assemble.
  • valve needle in a predetermined Rotational position is achieved in that the valve needle firmly connected to the valve housing via a bellows becomes. In this way there is a longitudinal movement of the valve needle possible, but rotation of the valve needle is excluded.
  • valve needle in the rotating position is achieved in that the valve needle over a Pin in a longitudinal recess in the direction of movement Valve needle is guided.
  • stop element is by a symmetrical design of the stop element on opposite Reached sides of the valve needle, causing the forces acting on the valve needle no bending moment in the Generate valve needle, but only in the longitudinal direction of the valve needle Act.
  • Another advantageous way of setting the maximum Hubes is between the stop and the stop element to provide an adjustment piece that is specified in Thickness is available.
  • the injection needle 2 is in the housing 4 arranged movably in the longitudinal direction.
  • the injection needle 2 has a valve plate 1 at the lower end in the closed position on a valve seat 3 and one Fuel chamber 18 closes.
  • the injection needle 2 is in this embodiment preferably by a stop 7 out, which is formed on the housing 4 and near the valve seat 3 is arranged.
  • the distance of the stop 7 from Valve seat 3 is as small as possible, so that differences in the coefficient of thermal expansion between the housing 4 and the injection needle 2 have only a slight influence on the have maximum injection opening.
  • the injection needle 2 has a stop element 6 with which the injection needle 2 when opening the injection opening, the forms between the valve plate 1 and the valve seat 3, is plantable.
  • the injection needle 2 is in the upper end region Disk 9 connected. Between the housing 4 and the disk 9 a spiral spring 5 is introduced, which the injection needle 2nd biased towards the valve seat 3. The injection needle 2 is via a welded connection 10 to the washer 9 connected. Inside the coil spring 5 is a metallic one Bellows 8 arranged, the circumferentially tight at one end with the disc 9 and at the other end with all around the housing 4 is connected via a welded connection 10. A fuel line 16 is introduced into the housing 4 opens into the fuel chamber 18 below the bellows 8. In this way, the bellows 8 seals the fuel chamber 18 from an interior 20 of the housing 4. Thereby prevents fuel from reaching the piezoelectric Actuator 14 wetted.
  • the top is End of the injection needle 2 preferably by a gap 11 of the associated drive plate 12 spaced.
  • the gap 11 ensures that the injection needle 2 is always in the rest position seals the valve seat 3 with the valve disk 1.
  • the Drive plate 12 is via a tubular spring 21 with an end plate 15 connected.
  • the piezoelectric actuator 14 is introduced and is due to the tension of the Bourdon tube 21 on a predetermined preload held.
  • electrical lines 17 are led to the piezoelectric actuator.
  • the electrical lines 17 are used to control the piezoelectric actuator 14.
  • the end plate 15 is over a Connection seam 13 connected to the housing 4.
  • a control device controls via the electrical lines 17 in Dependence on the operating parameters of a motor vehicle piezoelectric actuator 14 so that it expands. Presses through the expansion of the piezoelectric actuator 14 the drive plate 12, the injection needle 2 down, so that the valve disk 1 lifts off the valve seat 3 and an annular one Injection port releases. The injection needle 2 is so moved far down until the stop element 6 in one Stop area on the stop 7 is in plant and another Movement of the injection needle 2 is prevented.
  • the fuel line 16 is connected to a fuel accumulator, stored in the fuel at a given pressure is. If the injection opening opens, fuel is released from the Fuel chamber 18 discharged through the injection port, wherein Fuel from the fuel reservoir via the fuel line 16 continues to flow.
  • the piezoelectric actuator is used to end the injection 14 released, so that it contracts again and the Injection needle 2 is moved upwards by the spiral spring 5 and thus the valve plate 1 rests on the valve seat 3 and closes the fuel chamber 18.
  • the one shown in Fig. 1 Injector is an outward opening injector represents.
  • Fig. 2a shows the lower area on a larger scale of the injection valve of Fig. 1.
  • Fig. 2a with dl Seat diameter of valve seat 3, the widest with d2 Diameter of the stop element 6, the smallest with d3 Diameter of the opening 22 of the stop 7 and with the d4 Designated diameter of the injection needle 2.
  • g is the maximum Stroke of the injection needle 2, which is in the rest position by the distance of a first contact area 23 of the stop 7 from a second contact area 24 of the stop element 6 is set.
  • Fig. 2c shows the section A-A of Fig. 2a. It is clear the circular cross section of the injection needle 2 can be seen and the sides on opposite sides above it extending parts of the stop element 6. In a simple embodiment can instead of the two parts only a stop element formed on the side of the injection needle 2 6 may be provided.
  • 2d shows the section B-B at the height of the stop 7.
  • 2d is of a circular line with a dashed line Cross section of the inner recess of the housing 4 indicated.
  • the protruding into the interior of the housing 4 are clearly Stop parts 71 to recognize.
  • the stop parts 71 are on two opposite inner sides of the housing 4th educated.
  • the cross section of the injection needle 2 is smaller than the distance between the two stop parts 71, so that the injection needle is freely movable in the longitudinal direction.
  • FIG. 2d shows the opening 22 of the stop 7, which is designed in such a way that the cross section of the Injector 2 with the stop element 6 as in Fig. 2c is shown freely after a predetermined rotation the opening 22 is slidable.
  • the cross section is the Opening 22 in the shape and position with respect to the stop element 6 adjusted.
  • 2d is the contour of the stop element with a broken line 6 shown. 2d clearly shows that the injection needle 2 in the illustrated working position in the downward movement through the stop 7 is limited. By rotating the injection needle 2 by 90 ° the cross-sectional area of the stop element 6 overlaps brought with the opening 22 and the injection needle 2nd can go down through the opening 22 from the injector be pushed out.
  • FIG 3a shows a part of an inward opening injection valve, which has an injection needle 57 which on has lower end sealing surfaces 26 with which in the rest position Injection holes 25 are sealed and thus the Fuel chamber 18 is sealed.
  • the injection needle 57 has traveled a maximum stroke g and fuel is discharged from the fuel chamber 18 the injection holes 25 discharged.
  • To end the injection becomes the injection needle 57 again with the sealing surfaces 26 on the associated sealing seat in the area of the injection holes 25 moves.
  • FIGS. 3a, 3b and 3c 57 shown in the working position, so that this at Movement away from the sealing seat only a maximum stroke g to Stop 7 is movable. After turning the injection needle 57 by 90 °, the injection needle 57 up through the Opening 22 of the stop 7 are pushed out. Is to the stop element 6 is made smaller in cross section than the opening 22.
  • the stop element 6 formed in the form of two cylinders that are on opposite Side of the injection needle 2 and at a 90 ° angle arranged to the longitudinal direction of the injection needle 2 are.
  • two cylinders instead of two cylinders can also be arranged only one cylinder or the two cylinders can also be at any other angle be aligned with each other.
  • the use of two, on opposite Sides of the injection needle 2 arranged stop elements 6 has the advantage that when creating the stop elements 6 at stop 7 no transverse forces on the injection needle 2 are exercised.
  • the side of the injection needle 2 is formed.
  • the opening 22 is in shape adjusted according to the stop element 6 so that the stop element 6 in a first rotational position through the opening 22 is slidable and in a second rotational position Stop 7 can be brought into system.
  • Fig. 4b shows a stop 7 with an opening 22, the shape of the stop element 6 of Fig. 4a is adapted.
  • the opening 22 consists essentially of a central cylindrical shape, on the two arranged laterally on the cylindrical shape Rectangular shapes are formed.
  • the cross section of the Opening 22 is in size and orientation in the Formed such that the stop element 6 of Fig. 4a appropriate adjustment are pushed through the opening 22 can. With a corresponding twist against the orientation the opening 22, however, a pushing through the Injection needle 2 prevented by the stop 7, since the stop element 6 comes into contact with the stop 7.
  • the 4b shows a special shape of the stop element 7 shown as the first support area two opposite Has riser sections 42, 29.
  • the first Raising section 42 starts from a first rectangular recess 28 of the opening 22 and increases steadily with increasing Distance from the first rectangular recess 28.
  • the second Raising section 29 goes from the second rectangular recess 30 out and also increases with increasing distance from second rectangular recess 30.
  • the first and the second elevation section 42, 29 in the form of a partial ring surface arranged around the cylindrical center recess 31.
  • the first and second elevation sections 42, 29 are mirror-symmetrical arranged to the center axis of the center recess 31.
  • the function of the first and second riser sections 42, 29 is that depending on the Alignment of the stop element 6, the maximum stroke varies can be.
  • the maximum stroke is larger than if the injection needle 2 with the longitudinal axis of the stop element 6 in the alignment of the axis E, as shown in Fig. 4b, is arranged.
  • the maximum stroke g is reduced.
  • FIG. 5a shows a further embodiment of a stop 7 with a third and a fourth elevation section 43, 44, but with the third and fourth risers 43, 44 is divided into individual stages 32, 33, 34.
  • the single ones Steps 32, 33, 34 have different heights Surface of the stop 7 on.
  • This embodiment offers the advantage that by the rotational position of the stop element 6 the maximum stroke g can be set in predetermined steps can.
  • the first stage 32 of the first riser section 43 and the first step 32 of the second elevation section 44 are mirror-symmetrical arranged to the center axis of the center recess 31.
  • the second and third stages of the first are corresponding and second elevation section 43, 44 are arranged.
  • FIG. 5b shows a further embodiment of a stop 7, in which in the surface of the stop 7 a first and second recess 35, 36 are introduced.
  • the first recess 35 shows steps with different depths, whereby the depth increases in the direction of the arrow.
  • the second recess 36 is mirror-symmetrical to the center symmetry axis the central recess 31 with respect to the first recess 35 arranged.
  • the levels of the first and second Recess 35, 36 are formed in such a way that the stop element 6 with its two parts on the first, second or third stage of the first and the second recess 35, 36 depending on the angular position when it is at a maximum stroke g in contact with the stop 7 moves becomes.
  • maximum strokes in this way g can be set.
  • Fig. 6 shows a stop element 7 with a third and fourth recess 37, 38.
  • the third recess 37 is a recess increasing in depth in the direction of the arrow, which is adjacent to the central recess 31.
  • the third and fourth recess 37, 38 the first and the second elevation section 42, 29, however, the Stop element 6 in the recesses 37, 38 at maximum Stroke is present.
  • the stop element 6 is oriented in axis F with a maximum stroke of the injection needle 2 on the bases of the third and fourth recess 37, 38 which are only slightly lower than the surface of the Stop 7 are arranged.
  • the stop element 6 When the stop element 6 is oriented in the direction G is the stop element 6 on the bases of the third and fourth recess 37, 38 on that of the greatest depth of the recesses 37, 38 correspond. So is the maximum Stroke with an orientation of the stop element 6 in the Axis G larger than in the orientation of axis F.
  • the embodiment of the stop element 7 of FIG. 6 a stepless increase in the maximum stroke depending from the rotational position of the injection needle 2 in the working position.
  • the stops 7 of Figures 1 to 6 are both at to be used inside as well as with valves opening outwards.
  • Figures 7 to 9 show three positions of the injection needle when mounting the injection needle in the housing 4. Located in Fig. 7 the injection needle 2 with the stop element 6 still outside the housing 4. In Fig. 7, the injection needle 2 aligned with the stop element 6 in the manner that the cross section of the injection needle 2 and the stop element 6 are pushed through the opening 22 of the stop 7 can. For this purpose, as in the lower part of FIG. 8 shown, the cross section of the injection needle 2 with the stop element 6 smaller than the cross section of the opening 22 of the stop 7 formed. In the upper part of FIG. 8 the injection needle 2 is shown in the inserted state.
  • the injection needle 2 After inserting the injection needle 2 into the housing 4 (Fig. 8, top picture) is the injection needle 2 with respect to their center symmetry axis rotated by a predetermined angle, so that pushing out the injection needle 2 does not is more possible since the stop element 6 is in contact the stop is moved. In this process there is a twisting of the stop element 6 opposite the opening 22 of the stop 7 causes.
  • the stop element 6 and the stop 7 are coordinated like a lock and a key.
  • Fig. 9 shows an injection needle rotated into the working position 2, in the upper drawing in longitudinal section and in the lower Drawing in cross-section at the height of the stop element 6 is shown. It can be clearly seen that pushing down the injection needle 2 only by maximum stroke g is possible because the stop element 6 in the system is brought to the stop 7.
  • the upper end of the injection needle 2 is corresponding Fig. 1 connected to the bellows 8, which in turn is firmly connected to the housing 4. In this way the rotational position of the injection needle 2 is fixed.
  • the stops 7 have according to Figures 4 to 6, in which over the rotational position of the injection needle 2 set the maximum stroke can be.
  • FIGS. 10 to 13 show different variants of stop elements 6 and stops 7 shown.
  • Fig. 10 shows an embodiment in which the injection needle with stop element essentially has a cross section that one rounded triangle corresponds. They are symmetrical distributed three sections around the circumference of the injection needle 2 attached, each of which is essentially the shape of a truncated triangle, the truncated Corner directed away from the circumference of the injection needle is.
  • the opening 22 of the stop 7 is in the form corre sponding appropriate, but larger.
  • 10a shows the orientation the injection needle 2 and the stop 7 during assembly.
  • 10b shows the orientation of the injection needle 2 with the stop element 6 in the working position in which the Injection needle 2 with respect to the angular position Housing is connected. It can be clearly seen that in the working position by the movement of the injection needle 2 the stop 7 is limited.
  • Fig. 11 shows an injection needle with stop element 6, the Cross-section essentially a rounded square corresponds.
  • the opening 22 of the stop 7 is corresponding the cross section of the stop element 6, but larger.
  • 11a shows the injection needle 2 in the assembly position, in which the injection needle 2 according to the figures 7 and 8 with the stop element 6 pushed through the stop 7 becomes.
  • 11b shows the injection needle 2 in the working position, where the injection needle 2 firmly with the housing connected is.
  • 11b is the deflection of the injection needle 2 limited by the stop 7.
  • Fig. 12 shows an embodiment in which the stop element 6 in the form of two opposing partial ring surfaces is trained.
  • the opening 22 of the stop 7 is in the Corresponding shape, but larger.
  • 12a shows the mounting position at which the injection needle 2 with the stop element 6 is pushed through the stop 7.
  • Fig. 12b shows the working position of the injection needle 2, in which the Injection needle 2 is rotated into the working position so that the maximum stroke of the injection needle 2 through the stop 7 is limited.
  • 13 shows a further embodiment in which the stop element 6 from two on opposite sides of the Injection needle arranged pins is formed.
  • the opening 22 of the stop 7 has a central circular shape which are symmetrical on opposite sides Connects ring strips, the width of which is greater than that Length of the pins of the stop element 6 and their length is greater is the width of the pins of the stop element 6.
  • 13a shows the assembly position of the injection needle 2 with the injection needle 2 with the stop element 6 through the Stop 7 is pushed according to Figures 7 and 8.
  • 13b the injection needle 2 is in the working position shown, in which the injection needle 2 firmly with the Housing 4 is connected in relation to the angular position and thus the movement of the injection needle 2 to the maximum stroke g is limited according to FIG. 9.
  • the shapes of the stop elements 6 and the stops 7 of the figures 10 to 13 are both inside and outside opening valves.
  • Fig. 14 shows an embodiment of a locking element, with With the help of the angular position of the longitudinal axis of the stop element 6 is set.
  • the housing 4 is on opposite A longitudinal recess on each side of the inner surface 41, 45 introduced, parallel to the direction of movement the injection needle are arranged.
  • the injection needle 2 is connected to a guide pin 40 which runs across the Interior 20 of the housing 4 is guided and with both ends is guided in the longitudinal recesses 41, 45.
  • the actuator 14 via a membrane 50 against fuel sealed.
  • the pin 40 is on the injection needle 2 after insertion and turning into the working position according to FIG. 9 at the top of the injection needle e.g. by welding or Glued attached. In this way, the injection needle 2 fixed in their rotational position.
  • the pin 40 enables one Longitudinal movement of the injection needle 2 for opening and closing the injection opening, but prevents twisting the specified angular position.
  • An adjusting disk 58 is preferably on the stop 7 hung up, which is connected to the stop 7, and the one Has opening that the cross-sectional opening of the stop 7th corresponds so that the injection needle 2.57 during assembly can also be pushed through the shim 58.
  • the Shim 58 lies in the assembly in different Thicknesses ready so that by choosing the appropriate thickness the adjusting disc 58 the maximum stroke of the injection needle 2.57 can be set precisely.

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  • 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)
EP00124911A 1999-12-06 2000-11-15 Soupape à géométrie de butée améliorée Withdrawn EP1106817A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19958705A DE19958705C2 (de) 1999-12-06 1999-12-06 Ventil mit verbesserter Anschlaggeometrie
DE19958705 1999-12-06

Publications (1)

Publication Number Publication Date
EP1106817A2 true EP1106817A2 (fr) 2001-06-13

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ID=7931569

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00124911A Withdrawn EP1106817A2 (fr) 1999-12-06 2000-11-15 Soupape à géométrie de butée améliorée

Country Status (2)

Country Link
EP (1) EP1106817A2 (fr)
DE (1) DE19958705C2 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002092996A1 (fr) * 2001-05-12 2002-11-21 Robert Bosch Gmbh Soupape de commande de liquides
WO2003016702A2 (fr) * 2001-08-17 2003-02-27 Siemens Aktiengesellschaft Actionneur servant d'unite d'entrainement a un injecteur et procede de fabrication de l'injecteur
EP1391609A1 (fr) * 2002-08-20 2004-02-25 Siemens VDO Automotive S.p.A. Appareil de dosage avec une bague hydraulique
EP1445477A1 (fr) * 2003-01-24 2004-08-11 Siemens VDO Automotive S.p.A. Dispositif de dosage avec calibreur du débit et procédé pour ajuster le débit du dispositif de dosage
EP1450036A1 (fr) * 2003-02-20 2004-08-25 Siemens VDO Automotive S.p.A. Dispositif de dosage et procédé de réglage de la précontrainte d'un ressort
WO2016005190A1 (fr) * 2014-07-08 2016-01-14 Robert Bosch Gmbh Soupape ouvrant vers l'extérieur, servant en particulier pour des systèmes associés à des moteurs à combustion interne
WO2017048738A1 (fr) * 2015-09-15 2017-03-23 Caterpillar Inc. Soupape d'admission de carburant pour chambre de pré-combustion

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DE102005038426A1 (de) * 2005-08-16 2007-02-22 Wilo Ag Ventil mit Piezoelement
US7895751B2 (en) 2008-01-15 2011-03-01 Delphi Technologies, Inc. Variable shim for setting stroke on fuel injectors
DE102013012444A1 (de) 2013-07-29 2015-01-29 Astrium Gmbh Ventilanordnung zum Schalten und/oder Regeln eines Medienstroms eines Raumfahrttriebwerks und Raumfahrttriebwerk

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US4610080A (en) * 1985-07-29 1986-09-09 Allied Corporation Method for controlling fuel injector lift
DE3540660A1 (de) * 1985-11-16 1987-05-21 Bosch Gmbh Robert Elektromagnetisch betaetigbares kraftstoffeinspritzventil
DE4018317C1 (fr) * 1990-06-08 1991-09-26 Robert Bosch Gmbh, 7000 Stuttgart, De
DE19626576A1 (de) * 1996-07-02 1998-01-08 Bosch Gmbh Robert Brennstoffeinspritzventil
DE19633260A1 (de) * 1996-08-17 1998-02-19 Bosch Gmbh Robert Einspritzventil, insbesondere zum direkten Einspritzen von Kraftstoff in einen Brennraum eines Verbrennungsmotors
DE29700657U1 (de) * 1997-01-15 1997-03-13 Henke Sass Wolf Gmbh Ventilsystem
DE19752028C2 (de) * 1997-11-24 1999-09-30 Siemens Ag Verfahren zur Justierung des Ventilnadelhubs bei Dosierventilen und Dosierventil mit nach diesem Verfahren justierten Ventilnadelhub

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002092996A1 (fr) * 2001-05-12 2002-11-21 Robert Bosch Gmbh Soupape de commande de liquides
WO2003016702A2 (fr) * 2001-08-17 2003-02-27 Siemens Aktiengesellschaft Actionneur servant d'unite d'entrainement a un injecteur et procede de fabrication de l'injecteur
WO2003016702A3 (fr) * 2001-08-17 2003-10-23 Siemens Ag Actionneur servant d'unite d'entrainement a un injecteur et procede de fabrication de l'injecteur
EP1391609A1 (fr) * 2002-08-20 2004-02-25 Siemens VDO Automotive S.p.A. Appareil de dosage avec une bague hydraulique
EP1445477A1 (fr) * 2003-01-24 2004-08-11 Siemens VDO Automotive S.p.A. Dispositif de dosage avec calibreur du débit et procédé pour ajuster le débit du dispositif de dosage
EP1450036A1 (fr) * 2003-02-20 2004-08-25 Siemens VDO Automotive S.p.A. Dispositif de dosage et procédé de réglage de la précontrainte d'un ressort
WO2016005190A1 (fr) * 2014-07-08 2016-01-14 Robert Bosch Gmbh Soupape ouvrant vers l'extérieur, servant en particulier pour des systèmes associés à des moteurs à combustion interne
WO2017048738A1 (fr) * 2015-09-15 2017-03-23 Caterpillar Inc. Soupape d'admission de carburant pour chambre de pré-combustion
US9970400B2 (en) 2015-09-15 2018-05-15 Caterpillar Inc. Fuel admission valve for pre-chamber

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