EP1084344A1 - Fuel injection valve - Google Patents
Fuel injection valveInfo
- Publication number
- EP1084344A1 EP1084344A1 EP00909056A EP00909056A EP1084344A1 EP 1084344 A1 EP1084344 A1 EP 1084344A1 EP 00909056 A EP00909056 A EP 00909056A EP 00909056 A EP00909056 A EP 00909056A EP 1084344 A1 EP1084344 A1 EP 1084344A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- needle
- valve
- collar
- fuel injection
- injection valve
- 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 104
- 238000002347 injection Methods 0.000 title claims abstract description 40
- 239000007924 injection Substances 0.000 title claims abstract description 40
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 238000002485 combustion reaction Methods 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 description 9
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 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
- 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
- F02M63/0014—Valves characterised by the valve actuating means
- F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
- F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators
-
- 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
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
- F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
-
- 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
-
- 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
- F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
- F02M2200/701—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger mechanical
-
- 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
- F02M61/167—Means for compensating clearance or thermal expansion
Definitions
- the invention relates to a fuel injector according to the preamble of claim 1.
- the fuel injector resulting from this document consists of a two-part valve housing in which a valve needle is guided so as to be axially movable.
- the valve housing has a fuel connection at one end, via which fuel is supplied to the fuel injection valve.
- the valve needle cooperates with the valve housing to form a sealing seat, the valve needle being held in the closed position with a return spring.
- To actuate the valve needle it is provided on the inlet side with a pressure shoulder which works together with a piezoelectric actuator and is firmly connected to the valve needle. When the valve needle is actuated, the actuator acts against the force of the return spring.
- valve needle Since the valve needle is firmly connected to the pressure shoulder, the valve needle on the spray side and the pressure shoulder are movably guided on the inlet side in the valve body, a large inertial mass, which is composed of the mass of the valve needle and the mass of the pressure shoulder, must be actuated by the actuator or by the return spring to open or close the fuel injector.
- the two guides of the valve needle provided for axially movable guiding of the valve needle in the spray-side end and on the pressure shoulder at the inflow-side end are to be coordinated with one another, as a result of which the manufacture of the fuel injector is relatively complex and the fuel injector is susceptible to bending or tensioning of the valve needle and / or of the valve housing.
- the large mass to be actuated by the return spring consisting of the mass of the valve needle and the mass of the pressure shoulder, causes bouncing when the fuel injector is closed, and thus unwanted additional fuel spraying. In addition, this leads to increased wear on the fuel injector and thus to a shorter service life.
- the fuel injector according to the invention with the features of claim 1 has the advantage that a low-wear, low-friction design results.
- the fuel injector is almost free of bumps, which means that when the fuel injector is actuated, the duration of the spraying process and the spraying quantity of the fuel can be predefined.
- valve needle is guided axially movably only at one point by a valve needle guide.
- the valve needle is designed in a particularly advantageous manner, small and low-mass.
- valve needle guide advantageously bears on one of its end faces against a swirl disk.
- valve needle is guided coaxially to the axis of the fuel injector, which results in a uniform force transmission to the sealing seat and even wear in the area of the sealing seat.
- valve needle guide and / or the swirl disk advantageously has cutouts for the passage of fuel. This provides a simple structural measure for carrying out the fuel.
- a gap is advantageously formed between the needle collar of the valve needle and the collar of the needle driver, which gap widens in the radial direction towards the valve axis. This allows a liquid cushion formed between the collar of the needle driver and the needle collar to be quickly displaced, as a result of which the liquid cushion has no influence on the switching time and in particular shorter switching times can be enabled.
- the needle driver has at least one recess or bore for the passage of fuel.
- the interior of the needle carrier can serve as a fuel line, the fuel being conducted from the interior of the needle carrier through the cutout in the direction of the sealing seat.
- the cutout is advantageously formed by at least one slot in the needle carrier that runs in the axial direction.
- the shape of the recess is adapted to the direction of flow of the fuel.
- the needle driver advantageously has an opening with radial widenings at its needle collar-side end which overlap the adjacent end face of the needle collar to form flow windows.
- the fuel can be passed through the resulting flow window.
- the needle driver has a circular opening at its end on the side of the needle collar and the end face of the needle collar is of polygonal design, so that the end face of the needle collar is partially overlapped by the opening of the needle driver to form flow openings.
- the needle driver has a circular opening at its end on the side of the needle collar and the end face of the needle collar is of polygonal design, so that the end face of the needle collar is partially overlapped by the opening of the needle driver to form flow openings.
- no further structural changes are necessary on the needle driver and there are flow openings which are arranged in a streamlined manner.
- a liquid cushion formed between the collar of the needle driver and the needle collar can be quickly displaced, as a result of which the liquid cushion has no influence on the switching time and, in particular, shorter switching times can be made possible.
- the return spring is supported on the side facing away from the needle collar on an adjusting element, the adjusting element with the needle driver connected is.
- this allows the return spring to be preloaded in a simple, defined manner in terms of production technology.
- only the closing force of the fuel injector is specified by the return spring when the fuel injector is closed.
- the forces required to open and close the fuel injector can then be specified by the actuator and at least one additional spring.
- Fig. 2 shows a partial axial section through the spray-side area of a
- FIG. 3 shows an advantageous development of the recess shown in FIG. 2, designated III,
- Fig. 4 shows a partial axial section through part of the fuel injector, two bore-shaped in the needle driver
- Fig. 5 shows a partial axial section through an inventive fuel injector il, wherein between the needle collar of the valve needle and the
- Collar of the needle carrier slots are provided for the passage of the fuel
- 6 shows a partial axial section through a fuel injection valve according to the invention, recesses with radial extensions being provided in the needle driver,
- FIG. 7 is a front view of the embodiment shown in FIG. 6 in the direction designated VII,
- FIG. 8 is a partial axial section through an embodiment of the fuel injector according to the invention, in which the needle collar is triangular in shape,
- Fig. 9 is a front view of the embodiment shown in Fig. 8 in the direction indicated by IX, and
- Fig. 10 is a partial axial section through a further embodiment of a fuel injector according to the invention.
- the fuel injection valve 1 shows a fuel injection valve 1 according to the invention in an excerpted axial sectional view.
- the fuel injection valve 1 is designed here as an internal opening fuel injection valve 1.
- the fuel injection valve 1 is used in particular for the direct injection of fuel, in particular gasoline, into a combustion chamber of a mixture-compressing spark-ignition internal combustion engine as a so-called gasoline direct injection valve.
- the fuel injection valve 1 according to the invention is also suitable for other applications.
- the fuel injection valve 1 has a valve housing 2, which is composed of a front valve housing 3, a rear valve housing 4 and a fuel connection 5 put together.
- a valve closing body 7 which can be actuated by means of a valve needle 6 and which, in the exemplary embodiment shown, is formed in one piece with the valve needle 6.
- the valve closing body 7 is frustoconical in shape and tapers in the spray direction and interacts with a valve seat surface 9 formed on a valve seat body 8 to form a sealing seat.
- the valve needle 6 is held in the closed position by a return spring 10, which acts on the valve needle 6 via a valve needle collar 11 of the valve needle 6.
- the return spring 10 is centered on the side of the needle collar 11 by a centering body 12.
- the valve needle 6, the needle collar 11 and the centering body 12 are formed in one piece.
- valve needle 6 is at its axial
- valve needle guide 13 bears against a swirl disk 14 on its spray-side end face.
- the swirl disk 14 is fastened in the front part of the valve housing 3 and rests on the valve seat body 8 on its end face opposite the valve needle guide 13.
- the valve needle guide 13 and the swirl disk 14 have cutouts 15a, 15b, 16a, 16b, the cutouts 16a, 16b in the swirl disk 14 being designed as swirl channels.
- An actuator 17 is used to actuate the fuel injection valve 1, which actuator is designed to be piezoelectric, magnetostrictive or electromagnetic (FIG. 10).
- the actuator 17 is actuated via an electrical control signal which is transmitted to the actuator 17 via an electrical connection 18 and an electrical lead (not shown).
- the actuator 17 expands and moves a tubular needle driver 19 projecting through the actuator 17 in an inner longitudinal opening against the force of a biasing spring 20 in the direction of the fuel connection 5.
- the needle driver 19 engages behind the needle collar 11 and acts when actuated of the actuator 17 on the valve needle 6, whereby the valve needle 6 moves in the direction of the fuel connection 5.
- the valve closing body 7 lifts off the valve seat surface 9 of the valve seat body 8 and releases the sealing seat.
- the resulting gap between the valve closing body 7 and the valve seat surface 9 of the valve seat body 8 causes fuel to escape from the fuel injection valve 1 into the combustion chamber of the internal combustion engine.
- the resetting of the needle driver 19 takes place via the biasing spring 20, which is supported on the fuel connection 5 against the needle driver 19, whereby the biasing spring 20 also resets the actuator 17.
- the needle driver 19 has an inner recess 21 in which there is a sleeve-shaped adjusting element 22.
- the return spring 10 is supported on the adjusting element 22 on the side lying opposite the needle collar 11. By moving the adjusting element 22 in the inner recess 21 of the needle driver 19, the return spring 10 can be pre-stressed in a simple manner.
- the valve needle 6 is reset by the return spring 10.
- the fuel is guided from the fuel connection 5 through the inner recess 21 of the needle driver 19 and an inner recess 24 of the adjusting element 22 in the direction of the needle collar 11 on the valve needle S.
- 19 flow openings are formed in the needle driver.
- the flow openings are given by two transverse bores 25a, 25b in the needle driver 19.
- valve closing body 7 is partially spherical. This configuration is particularly advantageous in the self-guidance of the valve needle 6 and the valve closing body 7, as described in FIG. 1.
- a central opening 38 is provided in a bottom section 37 of the needle driver 19 that engages under the needle collar 11 and represents a collar, which has a larger diameter than the valve needle 6 and is penetrated by it. In this way, an annular annular gap 39 is formed between the needle driver 19 and the valve needle 6.
- the outer diameter of the needle collar 11 is smaller than the inner diameter of the needle driver 19, so that an annular annular gap 26 is formed between the needle collar 11 and the needle driver 19.
- the bottom section 37 of the needle driver 19 acts on a stop surface 27 of the needle collar 11.
- the needle driver 19 is reset faster than the valve needle 6, a liquid cushion is formed under the stop surface 27 between the bottom section 37 of the needle driver 19 and the needle collar 11.
- the return spring 10 must displace the liquid cushion under the stop surface 27.
- the needle collar is advantageously modified. A possible embodiment is described in detail in FIG. 3.
- FIG. 3 shows the detail section designated III in FIG. 2, an advantageous development of the needle collar 11 being embodied.
- the annular gaps 26, 39 already described are between the valve needle 6 and Needle collar 11 and the needle driver 19 formed.
- the valve needle 6, the needle collar 11 and the centering body 12 are formed in one piece.
- a gap 28 is formed between the needle collar 11, the valve needle 6 and the bottom section 37 of the needle driver 19, which gap widens in the radial direction towards the valve axis 23. In the sectional drawing, the gap 28 therefore has a wedge-shaped shape.
- the stop surface 27 is therefore reduced to a narrow, circular surface.
- the liquid cushion between the needle collar 11 and the bottom portion 37 of the needle driver 19 can be quickly displaced, as a result of which the valve needle 6 is returned to its initial position more quickly.
- the gap 28 can also be embodied by a special configuration of the bottom section 37 of the needle driver 19.
- the stop surface 27 can also be inclined in the opposite manner, so that the gap 28 narrows towards the valve axis 23.
- FIG. 4 shows a detail of the fuel injection valve 1 according to the invention in an excerpted axial sectional view. Elements which have already been described are provided with the same reference numerals, as a result of which a repeated description is unnecessary.
- the needle driver 19 has lateral bores 25a, 25b which allow fuel to flow from the inner recess 21 through the bores 25a, 25b in the direction of the sealing seat.
- the needle driver 19 has slots 29a, 29b extending in the axial direction, through which the fuel can flow from the inner recess 21 of the needle driver 19 in the direction of the sealing seat. More than two slots 29a, 29b can also be provided in order to allow a greater fuel flow.
- FIG. 6 shows a detail of the fuel injector 1 according to the invention in an excerpted axial sectional view. Elements which have already been described are provided with the same reference numerals, as a result of which a repeated description is unnecessary.
- the opening 38 in the bottom section 37 of the needle driver 19 is designed with radial extensions 31a-31c, only the radial extension 31a being visible in this illustration.
- the radial extension 31a overlaps the adjacent lower stop surface 27 of the needle collar 11 to form a flow window 33a.
- FIG. 7 shows the front view, designated VII in FIG. 6, of the detail of the fuel injection valve 1 according to the invention.
- the needle collar 11 of the valve needle 6 is located inside the needle driver 19.
- the needle driver 19 has the opening 38 with the radial extensions 31a to 31c.
- the extensions 31a to 31c of the opening 38 overlap the needle collar 11 of the valve needle 6, so that the flow windows 33a to 33c arise.
- the z. B. by 120 ° spaced flow windows 33a to 33c, the flow of fuel from the inside of the needle driver 19 in the direction of the sealing seat of the fuel injector 1st
- FIG. 8 shows a detail of the fuel injector 1 according to the invention in an excerpted axial sectional view. Elements already described are provided with the same reference numerals.
- the bottom section 37 of the needle driver 19 has a circular opening 38 which is distinguished by a comparatively large inner diameter.
- the needle collar 11 is triangular in shape and is supported in the area of its stop surface 27 Contact surfaces 35a to 35c, wherein only the contact surface 35a can be seen in this illustration.
- the circular opening 38 of the needle driver 19 overlaps the stop surface 27 of the needle collar 11 to form the flow window 33a on the side exactly opposite the contact surface 35a.
- FIG. 9 shows the front view, designated IX in FIG. 8, of the detail of the fuel injection valve 1.
- the needle driver 19 has a circular opening 38 at its needle collar end, which partially overlaps the triangular needle collar 11 of the valve needle 6 to form flow windows 33a to 33c.
- the needle driver 19 acts on the needle collar 11 of the valve needle 6 via contact surfaces 35a to 35c. Since the total contact surface given by the contact surfaces 35a to 35c is relatively small, there is the advantage that the fluid cushion explained in the description of FIGS. 2 and 3 between the needle driver 19 and the needle collar 11 under the contact surfaces 35a to 35c by the return spring 10 quickly can be displaced, resulting in a small influence of the liquid cushion on the switching time of the fuel injector 1.
- FIG. 10 shows, in an excerpted axial sectional view, a further exemplary embodiment of a fuel injector 1 according to the invention. Elements which have already been described are provided with the same reference numerals, so that a repeated description is unnecessary.
- the front valve housing 3 is fastened to the rear valve housing 4 via a screw connection 40 in the exemplary embodiment shown.
- a sealing ring 41 which is introduced in a circumferential groove 42 of the front valve housing 3, serves to seal this connection.
- a stroke adjusting disc 43 between an inner projection 44 of the rear valve housing 4 and the front valve housing 3 provided.
- the biasing spring 20 is supported in the illustrated embodiment on an adjusting element 45, wherein the biasing of the biasing spring 20 can be adjusted by the axial position of the adjusting element 45.
- the biasing spring 20 acts on a magnet armature 46, whereby a biasing force is applied to the needle driver 19 in the direction of the sealing seat.
- valve closing body 7 of the valve needle 6 is thereby pressed into the valve seat surface 9 of the valve seat body 8, as a result of which a sealing seat is formed.
- the valve needle 6 is guided by the valve needle guide 13.
- a swirl disk 14 is arranged downstream of the valve needle guide 13.
- an electromagnetically actuable actuator 46, 47 which comprises a solenoid coil 47 and the magnet armature 46, is used to actuate the fuel injection valve 1.
- An electrical control signal is used to actuate the actuator 46, 47, which is guided to the solenoid coil 47 via an electrical feed line 48 and is connected to a contact 49 in the connection 18 of the fuel injector 1.
- the solenoid 47 When the solenoid 47 is actuated, the magnet armature 46 is moved in the opening direction 50 up to a stop, which is given by a stop surface 51.
- the needle driver 19 is firmly connected to the magnet armature 46, as a result of which the latter also moves in the opening direction 50. Since the needle driver 19 engages behind the needle collar 11 of the valve needle 6 with its collar-shaped bottom section 37, the valve needle 6 is moved in the opening direction 50 during this movement, as a result of which the valve closing body 7 of the valve needle 6 lifts off from the valve seat surface 9 of the valve seat body 8 and the sealing seat is released becomes.
- the resulting gap between the valve closing body 7 and the valve seat surface 9 leads to the escape of fuel into the spray channel 52 of the valve seat body 8, as a result of which fuel is discharged from the Fuel injection valve 1 is injected into the combustion chamber of the internal combustion engine.
- the magnet armature 46 is moved by the biasing spring 20 against the opening direction 50, as a result of which the needle driver 19 is reset in the direction of the sealing seat.
- the restoring spring 10 acts on the valve needle 6 in the direction of the valve seat body 8 with a restoring force, as a result of which the sealing seat formed from valve closing body 7 and valve seat surface 9 closes.
- FIGS. 2 to 9 can be transferred without restriction to the fuel injector 1 described in FIG. 10.
- the fuel injection valve 1 can also be designed as an externally opening fuel injection valve 1.
- the needle driver 19 need not be formed inside the actuator 17, and the return spring 10 need not be arranged in the inner recess 21 of the needle driver 19.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19915210A DE19915210A1 (en) | 1999-04-03 | 1999-04-03 | Fuel injection valve for internal combustion engine, with actuator acting via needle carrier on valve needle |
DE19915210 | 1999-04-03 | ||
PCT/DE2000/000495 WO2000060232A1 (en) | 1999-04-03 | 2000-02-22 | Fuel injection valve |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1084344A1 true EP1084344A1 (en) | 2001-03-21 |
EP1084344B1 EP1084344B1 (en) | 2004-10-13 |
Family
ID=7903473
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00909056A Expired - Lifetime EP1084344B1 (en) | 1999-04-03 | 2000-02-22 | Fuel injection valve |
Country Status (5)
Country | Link |
---|---|
US (1) | US6575385B1 (en) |
EP (1) | EP1084344B1 (en) |
JP (1) | JP2002541375A (en) |
DE (2) | DE19915210A1 (en) |
WO (1) | WO2000060232A1 (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10034033A1 (en) * | 2000-07-13 | 2002-01-24 | Nass Magnet Gmbh | magnetic valve |
DE10063260B4 (en) * | 2000-12-19 | 2007-11-29 | Robert Bosch Gmbh | Fuel injector with adjustable twist |
DE10203655A1 (en) * | 2002-01-30 | 2004-01-22 | Robert Bosch Gmbh | Fuel injector |
DE10307003B3 (en) * | 2003-02-19 | 2004-05-13 | Siemens Ag | IC engine fuel injection valve has actuator controlling displacement of valve needle spring biased into closure position for fuel injection bores |
EP1568881B1 (en) * | 2004-02-27 | 2010-12-08 | Continental Automotive Italy S.p.A. | Fluid injector |
DE102004028885A1 (en) * | 2004-06-15 | 2006-01-05 | Robert Bosch Gmbh | Fuel injection valve |
DE102004031790A1 (en) * | 2004-07-01 | 2006-01-26 | Robert Bosch Gmbh | Common rail injector |
US20070007363A1 (en) * | 2005-07-04 | 2007-01-11 | Hitachi, Ltd. | Fuel injection valve |
EP2000661B1 (en) * | 2006-03-29 | 2012-02-29 | Keihin Corporation | Fuel injection valve |
FI121719B (en) | 2009-05-28 | 2011-03-15 | Waertsilae Finland Oy | Fuel injector |
JP5533173B2 (en) * | 2010-04-13 | 2014-06-25 | いすゞ自動車株式会社 | Fuel supply device |
JP5585178B2 (en) * | 2010-04-13 | 2014-09-10 | いすゞ自動車株式会社 | Fluid control device |
DE102010040898A1 (en) * | 2010-09-16 | 2012-03-22 | Robert Bosch Gmbh | Fuel injector |
DE102010063219B4 (en) * | 2010-12-16 | 2018-05-24 | Robert Bosch Gmbh | Piezoelectric actuator module and fuel injection valve |
JP5910586B2 (en) * | 2013-08-23 | 2016-04-27 | 株式会社デンソー | Fuel injection valve |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4022166A (en) * | 1975-04-03 | 1977-05-10 | Teledyne Industries, Inc. | Piezoelectric fuel injector valve |
US5482213A (en) * | 1993-05-31 | 1996-01-09 | Aisin Seiki Kabushiki Kaisha | Fuel injection valve operated by expansion and contraction of piezoelectric element |
US5625946A (en) * | 1995-05-19 | 1997-05-06 | Siemens Automotive Corporation | Armature guide for an electromechanical fuel injector and method of assembly |
DE19534445C2 (en) * | 1995-09-16 | 1998-07-30 | Man Nutzfahrzeuge Ag | Injection valve for internal combustion engines |
DE19736684A1 (en) * | 1997-08-22 | 1999-02-25 | Bosch Gmbh Robert | Fuel injector for internal combustion engine |
US5996912A (en) * | 1997-12-23 | 1999-12-07 | Siemens Automotive Corporation | Flat needle for pressurized swirl fuel injector |
-
1999
- 1999-04-03 DE DE19915210A patent/DE19915210A1/en not_active Withdrawn
-
2000
- 2000-02-22 DE DE2000508208 patent/DE50008208D1/en not_active Expired - Lifetime
- 2000-02-22 JP JP2000609701A patent/JP2002541375A/en active Pending
- 2000-02-22 EP EP00909056A patent/EP1084344B1/en not_active Expired - Lifetime
- 2000-02-22 WO PCT/DE2000/000495 patent/WO2000060232A1/en active IP Right Grant
- 2000-02-22 US US09/701,773 patent/US6575385B1/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO0060232A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP1084344B1 (en) | 2004-10-13 |
DE50008208D1 (en) | 2004-11-18 |
WO2000060232A1 (en) | 2000-10-12 |
DE19915210A1 (en) | 2000-10-05 |
JP2002541375A (en) | 2002-12-03 |
US6575385B1 (en) | 2003-06-10 |
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