EP1200728A1 - Brennstoffeinspritzventil - Google Patents
BrennstoffeinspritzventilInfo
- Publication number
- EP1200728A1 EP1200728A1 EP00949152A EP00949152A EP1200728A1 EP 1200728 A1 EP1200728 A1 EP 1200728A1 EP 00949152 A EP00949152 A EP 00949152A EP 00949152 A EP00949152 A EP 00949152A EP 1200728 A1 EP1200728 A1 EP 1200728A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- closing body
- valve seat
- fuel injection
- fuel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 69
- 238000002347 injection Methods 0.000 title claims abstract description 39
- 239000007924 injection Substances 0.000 title claims abstract description 39
- 238000002485 combustion reaction Methods 0.000 claims abstract description 5
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 description 8
- 125000006850 spacer group Chemical group 0.000 description 5
- 230000005281 excited state Effects 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
- F02M51/0632—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a spherically or partly spherically shaped armature, e.g. acting as valve body
-
- 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
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
- F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
- F02M51/0667—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature acting as a valve or having a short valve body attached thereto
-
- 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
- F02M61/162—Means to impart a whirling motion to fuel upstream or near discharging orifices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S239/00—Fluid sprinkling, spraying, and diffusing
- Y10S239/90—Electromagnetically actuated fuel injector having ball and seat type valve
Definitions
- the invention relates to a fuel injector according to the preamble of the main claim.
- Electromagnet actuated, a spherical valve closing body cooperating with a fixed valve seat for opening and closing the valve. If the solenoid of the electromagnet is energized, an armature is attached to an axially movable valve needle
- the connecting member of the valve needle arranged between the armature and the valve closing body is designed to be resilient.
- the flow direction of the fuel at the valve seat is equal to the closing movement of the valve closing body or the valve needle.
- the fuel is on on the upstream side of the valve seat with a pressure which acts in the closing direction of the valve, so that the fuel acts against the opening direction of the valve needle when the valve is opened.
- the fuel injector according to the invention with the characterizing features of the main claim has the advantage that it is particularly simple and inexpensive to manufacture.
- the fuel injector according to the invention can be easily handled by the simplified intermeshing of all components during assembly. Only two fixed and pressure-tight connections are necessary in order to guarantee a proper functioning of the pressure relief valve.
- valve closing body and the valve seat body are designed such that when the actuating element is excited, the opening movement of the valve closing body is supported by fuel pressure when the valve is closed due to the presence of system pressure on the downstream side of the valve closing body.
- the valve is designed in such a way that a hydraulic opening force is generated, so that, for example, an output stage required for actuation can be operated with less energy than before, which in turn means that
- Injector can be operated with lower starting currents.
- the switching tents of the injection valve are shortened in an advantageous manner.
- the inventive design of the valve closing body and valve seat body in the fuel volume downstream of the sealing seat does not produce a negative pressure, since no increase in volume is caused by the needle movement. In this way, compared to known valves, in which an increase in volume is caused by the needle movement when opening, the clamping quantity linearity and the atomization at the start of spraying can be significantly improved.
- valve closing body is firmly and pressure-tightly connected to an internal needle sleeve through which fuel flows.
- the needle sleeve is in turn firmly and pressure-tightly connected to a valve housing, the
- Axial movement of the valve closing body is made possible by the fact that sections of the needle sleeve are resilient. It is advantageous if the needle sleeve fulfills its function as a compression spring by means of a helically folded spring section.
- the small moving mass of the needle sleeve and the valve closing body enables the injection valve to be opened and closed quickly, so that the switching times of the injection valve can be shortened even further.
- an atomizer disk downstream of the valve seat can be very easily integrated in the valve housing, since a radial inflow m such an atomizer disk due to the structural design of the Valve seat body and the associated flow is favored.
- the inventive design of the pressure-balanced valve part consisting of a needle sleeve and valve closing body and the low mass of this valve part allow a relatively small magnetic circuit, whereby the dimensions of the entire injection valve can be kept small.
- FIG. 1 shows an internal fuel injector in section
- FIG. 2 shows a top view of a valve seat body.
- the fuel injector shown by way of example in FIG. 1 is a so-called inside-opening injector, which is particularly suitable as a high-pressure injector for the direct injection of fuel into the combustion chamber of a mixture-compressing spark-ignition internal combustion engine.
- the fuel injector is designed as a so-called top-feed injector, which means that an upper inlet-side end of the injector is designed on the opposite side to a lower injection-side end of the injector.
- the inlet end of the injection valve forms a tubular connecting piece 1.
- a fuel filter 3 is arranged through which the fuel passes.
- the connector 1 is in the region of a radially extending shoulder 4 with a sleeve-shaped
- valve housing 5 firmly connected, the connection piece 1 ultimately also constituting part of the valve housing.
- the valve housing 5 has a jacket section 6 and a bottom section 7.
- a central outlet opening 9 is provided, through which the
- Fuel is injected directly into a combustion chamber.
- the fuel injector is actuated e.g. electromagnetically.
- a solenoid 8 is arranged within the valve housing 5, the one for receiving the
- Solenoid coil 8 provided coil space is limited radially outwards by the jacket section 6 of the valve housing 5 and upwards by the shoulder 4 of the connecting piece 1.
- the valve housing 5 also serves as the valve seat support
- valve seat body 10 Receiving a valve seat body 10.
- the valve seat body 10 has a e.g. frustoconical valve seat surface 13 with which a partially spherical valve closing body 14 cooperates to form a sealing seat.
- the valve closing body 14 lies tightly against the valve seat surface 13, so that the valve is closed.
- Figure 1 the injection valve is shown in the excited state, in which the valve closing body 14 is in a position raised from the valve seat 13.
- a needle sleeve 16 which is designed as a bellows and is fixedly connected to the valve closing body 14 or Closing the injection valve serves the electromagnetic circuit with the magnet coil 8, a first inner pole part 18, a second outer pole part 19 and the valve closing body 14 which also serves as a magnet armature.
- the needle sleeve 16 does not represent an axially movable valve needle in the conventional sense, since it is a resilient component is executed, which is fixedly connected at its end opposite the valve closing body 14 to the valve housing 5 or to the connecting piece 1.
- an adjusting sleeve 20 pressed into the connecting piece 1 lies directly against a fold of the needle sleeve 16.
- the fuel subsequently flows through the needle sleeve 16 in the axial direction up to the valve closing body 14, which has an inner through bore 22.
- the needle sleeve 16 and the valve closing body 14 can be glued or soldered to one another in a pressure-tight manner.
- a press fit between the two parts 14 and 16 with a stop shoulder provided on the needle sleeve 16, up to which the valve closing body 14 can be pressed on is also conceivable.
- the cavity 24 of the valve seat body 10 is formed by a trough-shaped recess 21, in which the frustoconical valve seat surface 13 ends. Starting from the cavity 24, the flow passes through the narrow gap between the valve closing body 14 and the valve seat surface 13 when the injection valve is open at least a partial flow reversal of the fuel, since in addition to a radial flow component, an axial flow component is added which corresponds to the axial flow direction
- Connection piece 1 is directed up to the cavity 24, as the arrows in the area of the sealing seat illustrate. In this way, opening processes of the injection valve that are supported with the fuel pressure and the fuel flow direction can be realized.
- valve seat body 10 In the radial direction, fuel flows up to at least one, for example three, flats 25 provided on the outer circumference of the valve seat body 10, which form flow channels 26 as flat surfaces between them and the jacket section 6 of the valve housing 5.
- a valve seat body 10 is shown as a single component in a plan view. Due to its three flats 25, the valve seat body 10 has a largely triangular shape, the transition regions 27 between the flats 25 on the circumference of the valve seat body 10 being 120 ° apart each having a circular outer contour. The transition regions 27 allow a centered insertion of the valve seat body 10 into the valve housing 5.
- a radially flowed atomizer disc 29 which is located between an underside 30 of the Valve seat body 10 and the bottom portion 7 of the valve housing 5 is clamped.
- a three-layer atomizer disc 29 is indicated schematically, which is produced, for example, by means of multilayer electroplating.
- This atomizer disc 29 has, for example, a plurality of swirl channels 32 in a central plane, which open into a central swirl chamber 33.
- the fuel which is swirling in this way emerges from an outlet opening 34 of the atomizer disc 29 provided in a lower level. The is concentrated in the outlet opening 34
- valve housing 5 In the valve housing 5 is the
- Atomizer disc 29 inserted in a recess 35 provided for this purpose in the base section 7.
- the valve seat body 10 is then pushed into the valve housing 5.
- the underside 30 of the valve seat body 10 rests on the atomizer disc 29 and thus defines the height of the radial inflow region for the atomizer disc 29.
- the spacer 38 is formed with a specific thickness for adjusting the stroke of the valve closing body 14.
- the flow channels 26 are covered by the spacer 38 in their outer areas so that the fuel can flow into them unhindered.
- the second pole part 19 which represents a magnetic bracket with an L-shaped cross section, is inserted into the valve housing 5 until it rests on the spacer disk 38.
- the magnet coil 8 is inserted into the pole part 19.
- the pole part 19 has on its radially extending leg a guide opening 39 which serves to guide the valve closing body 14 during its axial movement.
- the valve part consisting of needle sleeve 16 and valve closing body 14 and the first pole part 18, which also has an L-shaped cross section as a magnetic bracket are inserted into the valve housing 5.
- the needle sleeve 16 is produced, for example, by deep drawing from spring steel.
- the folds of the needle sleeve 16 which exert a spring effect are introduced by inserting a molding tool into the sleeve, which resembles a screw and with its thread rests on the inner wall of the sleeve.
- a molding tool By increasing the ambient pressure in a pressure chamber and sealing the inside of the sleeve against the excess pressure, the sleeve implodes and takes on the external shape of the screw-like tool. This tool can then be screwed out of the needle sleeve 16 like a screw.
- the sleeve can be manufactured by injection molding, whereby the plastic must have constant elasticity over the long term.
- the needle sleeve 16 has the function of a compression spring which presses the valve closing body 14 against the valve seat surface 13 in the non-excited state into the closed position of the injection valve. Despite the small wall thickness and thus low weight, the needle sleeve 16 is very stable and stiff against the internal fuel pressure due to the folded or thread-like shape.
- the first pole part 18 is pushed into the valve housing 5 until it rests on the second pole part 19. In this way, the magnet coil 8 is surrounded in all directions by the two pole parts 18, 19. With a bent sleeve end 40, the needle sleeve 16 rests on the first pole part 18.
- the weld seam 42 must be designed in such a way that the needle sleeve 16 is also connected to the connecting piece 1 in a pressure-tight manner.
- the adjusting sleeve 20 is inserted into the connecting piece 1.
- the fuel filter 3 is then inserted and a sealing ring 44 is pushed onto the connecting piece 1.
- the needle sleeve 16 presses the valve closing body 14 against the valve seat surface 13.
- the fuel is under system pressure upstream of the sealing seat.
- the flow cavities downstream of the sealing seat are filled with fuel without pressure.
- a seal of the unpressurized area against the pressurized area is achieved by the pressure-tight connection of the needle sleeve 16 to both
- Valve closing body 14 and also reached with the connecting piece 1.
- the clamping area between valve housing 5, valve seat body 10 and atomizer disk 29 does not have to be absolutely pressure-tight, since pressure is only present when the injector is open and then the flow directly takes the way through the flow openings in the atomizer disk 29 because of the low flow resistance.
- the partially spherical valve closing body 14 has on its side facing away from the valve seat surface 13 a ground end face 45 which extends perpendicular to the longitudinal axis 15 of the valve.
- the valve closing body 14, which acts as a magnet armature, is pulled when the solenoid 8 is energized from the valve seat surface 13 to a stop surface 46 provided on the first pole part 18.
- the path between the two end positions (stop surface 46, valve seat surface 13) of the valve closing body 14 thus represents the stroke.
- the stroke can be influenced.
- the injection valve When the injection valve is opened, there is no negative pressure in the fuel volume downstream of the sealing seat, since the needle movement does not increase the volume. In this way, compared to known valves in which an increase in volume is caused by the needle movement when opening, the
- the small moving mass of the needle sleeve 16 and the valve closing body 14 enables the injection valve to be opened and closed quickly.
- the fuel injection valve according to the invention has a valve closing body 14 through which there is an internal flow.
- valve closing body 14 fuel flows near the longitudinal axis 15 of the valve to the downstream end of the valve closing body 14, so that when the valve is closed, system pressure is present on the downstream side of the valve closing body 14 immediately upstream of the valve seat 13. There is no hydraulic closing load on the upstream side of the valve closing body 14, for example in the region of the end face 45.
- This hydraulic pressure distribution generates a hydraulic opening force, which supports the opening process of the valve under fuel pressure.
- the flow reversal in the cavity 24 with a flow direction directly in front of the valve seat 13 with an axial flow component acting in the opening direction of the valve further supports the opening movement of the valve closing body 14.
- the valve seat body 10 can also be designed as a flat seat, so that a fuel flow from the latter Valve seat body 14 through which flow occurs from the inside takes place only radially outward without an axial flow component. In this case too, the opening movement of the
- Valve closing body 14 supported by fuel pressure, since again the system pressure is applied to the underside of the valve closing body 14 in front of the valve seat 13 when the valve is closed.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19931822 | 1999-07-08 | ||
| DE19931822A DE19931822A1 (de) | 1999-07-08 | 1999-07-08 | Brennstoffeinspritzventil |
| PCT/DE2000/002186 WO2001004486A1 (de) | 1999-07-08 | 2000-07-07 | Brennstoffeinspritzventil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1200728A1 true EP1200728A1 (de) | 2002-05-02 |
| EP1200728B1 EP1200728B1 (de) | 2005-10-19 |
Family
ID=7914077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00949152A Expired - Lifetime EP1200728B1 (de) | 1999-07-08 | 2000-07-07 | Brennstoffeinspritzventil |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US7032846B1 (de) |
| EP (1) | EP1200728B1 (de) |
| JP (1) | JP2003504550A (de) |
| CN (1) | CN1158459C (de) |
| BR (1) | BR0012275A (de) |
| DE (2) | DE19931822A1 (de) |
| WO (1) | WO2001004486A1 (de) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10109611A1 (de) * | 2001-02-28 | 2002-09-05 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
| ITBO20040649A1 (it) * | 2004-10-20 | 2005-01-20 | Magneti Marelli Powertrain Spa | Iniettore di carburante con attuazione elettromagnetica dello spillo |
| DE102006052817A1 (de) * | 2006-11-09 | 2008-05-15 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
| JP4935882B2 (ja) * | 2009-03-05 | 2012-05-23 | 株式会社デンソー | 燃料噴射弁 |
| US20100314470A1 (en) * | 2009-06-11 | 2010-12-16 | Stanadyne Corporation | Injector having swirl structure downstream of valve seat |
| EP2354528B1 (de) * | 2010-01-15 | 2012-08-29 | Continental Automotive GmbH | Ventilanordnung und Einspritzventil |
| WO2012158153A1 (en) * | 2011-05-13 | 2012-11-22 | Meyer Andrew E | Fuel injector |
| JP6186126B2 (ja) * | 2013-01-24 | 2017-08-23 | 日立オートモティブシステムズ株式会社 | 燃料噴射装置 |
| DE102016206996B3 (de) * | 2016-04-25 | 2017-08-31 | Continental Automotive Gmbh | Schaltventil für ein Kraftstoffeinspritzsystem sowie Kraftstoffhochdruckpumpe |
| US10927739B2 (en) | 2016-12-23 | 2021-02-23 | Cummins Emission Solutions Inc. | Injector including swirl device |
| US10458293B2 (en) * | 2017-07-20 | 2019-10-29 | Woodward, Inc. | Metering plate for reduction in discharge coefficient variation between gaseous fuel injectors |
| CN107617519A (zh) * | 2017-09-22 | 2018-01-23 | 丰汉电子(上海)有限公司 | 脉冲式离型剂喷涂用电磁喷嘴 |
| DE102019205306A1 (de) * | 2019-04-12 | 2020-10-15 | Robert Bosch Gmbh | Ventil zum Zumessen eines Fluids |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2064554C2 (de) * | 1970-12-30 | 1982-12-09 | Daimler-Benz Ag, 7000 Stuttgart | Einrichtung zur Förderung von Hydraulikmengen mit vorgegebenem Druck, z.B. Kraftstoffeinspritzung bei Brennkraftmaschinen |
| US3982693A (en) * | 1976-01-16 | 1976-09-28 | General Motors Corporation | Orifice plunger valve fuel injector |
| DE2755400A1 (de) * | 1977-12-13 | 1979-06-21 | Bosch Gmbh Robert | Kraftstoff-einspritzanlage fuer brennkraftmaschinen, insbesondere fuer schichtlademotoren |
| DE3843862A1 (de) | 1988-12-24 | 1990-06-28 | Bosch Gmbh Robert | Elektromagnetisch betaetigbares ventil |
| US5341994A (en) * | 1993-07-30 | 1994-08-30 | Siemens Automotive L.P. | Spoked solenoid armature for an electromechanical valve |
| US5452574A (en) * | 1994-01-14 | 1995-09-26 | Solar Turbines Incorporated | Gas turbine engine catalytic and primary combustor arrangement having selective air flow control |
| US5544816A (en) * | 1994-08-18 | 1996-08-13 | Siemens Automotive L.P. | Housing for coil of solenoid-operated fuel injector |
| US5769328A (en) * | 1995-12-26 | 1998-06-23 | General Motors Corporation | Fuel interconnect for fuel injector |
| GB9623469D0 (en) * | 1996-11-12 | 1997-01-08 | Lucas Ind Plc | Injector |
| US5979803A (en) * | 1997-05-09 | 1999-11-09 | Cummins Engine Company | Fuel injector with pressure balanced needle valve |
-
1999
- 1999-07-08 DE DE19931822A patent/DE19931822A1/de not_active Withdrawn
-
2000
- 2000-07-07 DE DE50011391T patent/DE50011391D1/de not_active Expired - Lifetime
- 2000-07-07 EP EP00949152A patent/EP1200728B1/de not_active Expired - Lifetime
- 2000-07-07 WO PCT/DE2000/002186 patent/WO2001004486A1/de not_active Ceased
- 2000-07-07 JP JP2001509865A patent/JP2003504550A/ja active Pending
- 2000-07-07 BR BR0012275-0A patent/BR0012275A/pt active Search and Examination
- 2000-07-07 CN CNB008100985A patent/CN1158459C/zh not_active Expired - Fee Related
- 2000-07-07 US US10/030,576 patent/US7032846B1/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0104486A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1158459C (zh) | 2004-07-21 |
| BR0012275A (pt) | 2002-03-12 |
| CN1360663A (zh) | 2002-07-24 |
| DE50011391D1 (de) | 2006-03-02 |
| EP1200728B1 (de) | 2005-10-19 |
| JP2003504550A (ja) | 2003-02-04 |
| WO2001004486A1 (de) | 2001-01-18 |
| DE19931822A1 (de) | 2001-01-11 |
| US7032846B1 (en) | 2006-04-25 |
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