EP0862781A1 - Brennstoffeinspritzventil - Google Patents
BrennstoffeinspritzventilInfo
- Publication number
- EP0862781A1 EP0862781A1 EP97909180A EP97909180A EP0862781A1 EP 0862781 A1 EP0862781 A1 EP 0862781A1 EP 97909180 A EP97909180 A EP 97909180A EP 97909180 A EP97909180 A EP 97909180A EP 0862781 A1 EP0862781 A1 EP 0862781A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- core
- fuel injection
- injection valve
- fuel
- valve according
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/08—Cores, Yokes, or armatures made from powder
-
- 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
- F02M51/0671—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 having an elongated 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/07—Fuel-injection apparatus having means for avoiding sticking of valve or armature, e.g. preventing hydraulic or magnetic sticking of parts
-
- 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
- F02M2200/90—Selection of particular materials
- F02M2200/9092—Sintered materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/16—Rectilinearly-movable armatures
- H01F2007/1676—Means for avoiding or reducing eddy currents in the magnetic circuit, e.g. radial slots
Definitions
- the invention is based on a fuel injection valve according to the preamble of claim 1 and claim 2.
- Fuel injection valves are already known which can be actuated electromagnetically and therefore have a magnetic circuit which comprises at least one magnet coil, a core, an armature and an outer pole.
- Such fuel injectors are already shown and described, for example, in the documents DE-OS 30 16 993, DE-PS 32 30 844, DE-PS 37 33 809, DE-PS 40 03 227 and DE-OS 195 03 821.
- Ferromagnetic (soft magnetic) materials are usually used for the solid, one-piece, compact core (as well as for the movable armature).
- ferritic chromium steel has established itself. B. is used as 13% Cr steel.
- ferritic chromium steel represents a good compromise, since it is, for. B. has slightly less good magnetic properties than ferritic soft iron, but due to its good workability and handling for use in one compact and highly structured fuel injector is well suited. If the magnetic flux density changes in the core carrying a magnetic flux due to the energization of the magnetic coil, then voltages are induced in the flux field perpendicular to the direction of flow, which result in eddy currents. These eddy currents weaken the useful magnetic field because they build up an opposing field. The result is a magnetic circuit whose effectiveness is reduced and which is to be improved according to the invention.
- Magnetic circuit is created by a simple and inexpensive use of materials with a lower eddy current tendency for the core.
- the core which forms part of the magnetic circuit from a solid, ferritic material, the core being composed of a plurality of sectors to form a circular ring and the individual sectors being electrically insulated from one another.
- Such a construction of the core also has a lower eddy current tendency al ⁇ known compact cores made of ferritic chromium steel, so that in this case, too, a switching time reduction of the valve is achieved with the same quality of the magnetic properties.
- the switching times are shortened and thus the linearity of the fuel injector is improved without a simultaneous loss of magnetic force. Furthermore, the energy utilization is improved, which results in less heating of the magnetic coil and the possibility of using the magnetic circuit energy when switching off for the next switching on. This in turn makes it possible to implement a simple and inexpensive layout of the driving output stage.
- the means for encapsulating the core ensure that there is a tight seal to the fuel flow path and that fuel wetting of the core is therefore excluded.
- a sleeve protruding through a longitudinal opening of the core and encapsulating it towards the inside is made of very thin-walled stainless steel (e.g. V2A steel), which is largely free of magnetic flux and eddy current.
- the magnetic circuit effectiveness is only very slightly influenced by the thin-walled non-magnetic sleeve, so that the positive magnetic properties of the low-eddy-current materials clearly outweigh them.
- the core is encapsulated on its lower end face with an adjacent pole part which is formed from a ferritic material. It is advantageous if both the sleeve and the pole part are made as thin as possible, the sleeve should be made of a material that has a higher magnetic resistance than the core and also a higher magnetic resistance than the pole part.
- Exemplary embodiment shown electromagnetically actuated valve in the form of an injection valve for fuel injection systems of mixture-compressing, spark-ignited internal combustion engines has a tubular, largely hollow cylindrical core 2, which is at least partially surrounded by a magnetic coil 1 and serves as the inner pole of a magnetic circuit.
- the fuel injection valve is particularly suitable for direct use Injecting fuel into a combustion chamber of an internal combustion engine.
- a tiered one For example, a tiered one
- Coil body 3 receives a winding of the magnet coil 1 and, in conjunction with the core 2 and an annular, non-magnetic intermediate piece 4 with an L-shaped cross section partially surrounded by the magnet coil 1, enables a particularly compact and short structure of the injection valve in the region of the magnet coil 1
- the intermediate piece 4 projects with one leg in the axial direction into a step 5 of the coil former 3 and with the other leg radially along an end face of the coil former 3 lying below in the drawing.
- the core 2 consists of a powder composite material, the properties of which will be described in detail later are explained.
- a continuous longitudinal opening 7 is provided in the core 2 and extends along a longitudinal valve axis 8 extends.
- the sleeve 10 lies directly on the wall of the longitudinal opening 7 or has a play in relation to this and has a sealing function to the core 2.
- the sleeve 10 also serves as a fuel supply channel, and together with an upper metal (for example ferritic) housing part 14, which largely surrounds the sleeve 10, forms a fuel inlet connection.
- an upper metal (for example ferritic) housing part 14 which largely surrounds the sleeve 10, forms a fuel inlet connection.
- a nasal opening 15 is provided which has, for example, the same diameter as the longitudinal opening 7 of the Kern ⁇ 2.
- the housing part 14 forms the inlet-side end of the fuel injection valve and envelops the sleeve 10, the core 2 and the magnetic coil 1 at least partially in the axial and radial directions and extends, for example in the axial direction, downstream over the
- valve seat carrier 21 surrounds a valve seat body 26 fitted in the through opening 24.
- the z. B. rod-shaped, a circular cross-section valve needle 20 arranged on has a valve closing section 28 at its downstream end. This tapered cone
- Valve closing section 28 acts in a known manner with a valve seat body 26 provided in the flow direction z.
- B. frustoconical tapered valve seat surface 29 which is formed in the axial direction downstream of a guide opening 30 located in the valve seat body 26. Downstream of the valve seat surface 29 is or are at least one, for. B. but also two or four
- Outlet openings 32 introduced for the fuel.
- flow areas depressions, grooves or the like, which are not shown, are provided, which ensure an unimpeded fuel flow from the through opening 24 to the valve seat surface 29.
- valve assembly downstream of the magnetic circuit represents only one possible design variant of the valve assembly downstream of the magnetic circuit.
- n is referred to Valve area omitted, it should be emphasized that the most varied valve assemblies can be combined together with the design of the core 2 according to the invention.
- valve assemblies of an outward-opening injection valve such as those described in US Pat. B. are known from US-PS 4,958,771 or were proposed in the patent application DE-P 196 01 019.5, can be used together with the new magnetic circuit design.
- valve closing bodies or • spray perforated disks are, for. B. conceivable in such valve assemblies.
- the injection valve is actuated electromagnetically in a known manner.
- the electromagnetic circuit with the magnet coil 1, the core 2, the pole part 13 and the armature 19 serves for the axial movement of the valve needle 20 and thus for opening against the spring force of a return spring 33 arranged in the interior of the sleeve 10 or closing the injection valve 19 is with the valve closing portion 28 facing away from the valve needle 20 z. B. connected by a weld and aligned to the core 2.
- the guide opening 30 of the valve seat body 26 serves to guide the valve needle 20 during its axial movement with the armature 19 along the valve longitudinal axis 8.
- the armature 19 is guided in the precisely manufactured non-magnetic intermediate piece 4 during the axial movement.
- a one-piece version can also be provided, in which a circumferential, narrow web 35 extends from the pole part 13 in the axial direction as a transition to the housing part 18 extends and all sections together (pole part 13, sleeve-shaped web 35, lower housing part 18) form a ferritic component. Accordingly, the inner boundary surface of the web 35 then serves as a guide for the armature 19.
- An adjusting sleeve 38 is inserted, pressed or screwed into an inner flow bore 37 of the sleeve 10, which runs concentrically to the longitudinal valve axis 8 and serves to supply the fuel in the direction of the valve seat surface 29.
- the adjusting sleeve 38 serves to adjust the spring preload of the return spring 33 abutting the adjusting sleeve 38, which in turn is supported with its opposite side on a shoulder 39 of the armature 19 fastened to the valve needle 20.
- In the armature 19 are one or more ring-shaped or bore-like Flow channels 40 are provided, through which the fuel can pass from the flow bore 37 into the through opening 24.
- the stroke of the valve needle 20 is predetermined by the valve seat body 26 and the pole part 13.
- An end position of the valve needle 20 is determined when the solenoid coil 1 is not energized by the valve closing section 28 bearing against the valve seat surface 29 of the valve seat body 26, while the other end position of the valve needle 20 when the solenoid coil 1 is excited results from the armature 19 resting on the pole part 13.
- the surfaces of the components in this stop area are chrome-plated, for example.
- connection cable 44 via which the energization of the magnet coil 1 takes place.
- FIG. 1 A particularly advantageous embodiment of the core 2 is shown in FIG. 1.
- the core 2 is tubular, but is not designed with a constant outside diameter.
- the core has only in the area of the plastic extrusion 45 2 has a constant outer diameter over its entire axial extent.
- the core 2 is configured with a radially outwardly facing collar 46, which extends partially over the magnet coil 1 in a cover-like manner.
- the plastic injection molding 45 thus projects through a groove in the collar 46. Since the core 2 is made of a material that reduces eddy currents, eg. B. a powder composite material, this version is particularly useful to achieve a very effective magnetic circuit.
- An ideal magnetic material for the core 2 is z. B. ferritic soft iron.
- this material also has disadvantages.
- the material is very good electrical conductor, which leads to large amounts of disadvantageous eddy currents which are to be greatly reduced, especially according to the invention.
- soft iron is extremely difficult to machine mechanically. Therefore nowadays hardly any soft iron is used for magnetic circuits, especially for the core 2, of fuel injectors, but usually a ferritic chrome steel, e.g. B. a 13% Cr steel, which has less good magnetic properties, but is very easy to handle.
- a powder composite material is particularly suitable for the core 2. This material is e.g. from commercially available pure iron powder, which lies in a plastic matrix. The iron powder has a very small granularity, the individual iron grains being coated with a very thin, electrically insulating phosphate layer. The powder is also coated with e.g. 0.5% by mass of polymer additive (e.g. polyamide,
- Phenolic resin, etc. which has an electrically insulating effect and binds the grains. Due to the high electrical resistance between the powder particles of such a powder metallurgical, "baked" composite material, eddy currents can hardly form there advantageous eddy current reduction, there are further advantages of using a powder composite material, such as cost-effective producibility, simple handling and precise machinability (e.g. production of an internal press fit for the longitudinal opening 7 in the core 2) and good adhesive properties. However, it is particularly advantageous that the magnetic properties are comparatively good despite the reduced eddy current tendency compared to the known magnetic circuit materials.
- the mechanical properties of the powder composite materials are used in a fuel injector (especially for
- the powder composite material is encapsulated with the sleeve 10 and the pole part 13 with a seal to the internal flow path leading to the fuel.
- the non-magnetic sleeve 10 is made very thin-walled in order to make the best possible use of the good magnetic properties of the composite material.
- FIGS. 2 to 5 show different exemplary embodiments of the novel magnetic circuit for
- FIG. 2 partially shows a fuel injector which has a tubular core 2 with a largely constant outside diameter, that is to say which does not have a radially outward direction, one partially covering the solenoid 1
- the core 2 is, for example, stepped on its lower end face 11 in order to be enclosed by the pole part 13, which is now L-shaped in cross section.
- the pole part 13 has namely on its radially outer, the sleeve 10 opposite boundary side a circumferential, upstanding collar 48 which, for. B. axially flush with the intermediate piece 4.
- the core 2 is also partially covered on its outer circumferential surface facing the magnet coil 1.
- the fixed connections of sleeve 10 and pole part 13 or pole part 13 and intermediate piece 4 are in turn achieved by welding or brazing.
- An elastic ring 49 between an upper end face 5C of the core 2 and the bottom of the housing part 14 has essentially no sealing task, but presses z. B.
- the adjusting sleeve 38 is introduced, for example, by screwing or caulking in the housing part 14 and presses with an elongated, downstream tapered sleeve section 52 against the return spring 33.
- the sleeve 10 is shortened compared to the exemplary embodiment shown in FIG executed. Their axial extent extends from a housing shoulder 53 of the longitudinal opening 7 near the upper end face 50 of the core 2 to the downstream boundary surface of the pole part 13.
- a fuel injector is shown in part in FIG. 3, which has a very short sleeve 10, which has only a slightly larger axial extension than the core 2, which is designed in a circular shape with both a constant inside diameter and a constant outside diameter.
- the sleeve 10 stands without overlap only on the pole part 13, which does not allow an optimal tight connection.
- FIG. 4 Four different embodiments of the sleeve 10 or sealing options and connection techniques are summarized in FIG. 4. If the sleeve 10 with a greater length z. B. executed up to the inlet end of the injection valve, a firm connection of the sleeve 10 in the longitudinal opening 7 of the housing part 14 by a weld seam 56 near the injection valve end is appropriate. If the sleeve 10 is made shorter, a seal can be made between the sleeve 10 and the housing part 14 by means of a sealing ring 57 which is inserted above the magnetic coil 1 in a circumferential annular groove 58 made in the longitudinal opening 7. As alternatives to the small contact area of the sleeve 10 and the pole part 13 shown in FIG.
- FIG. 3 two possibilities for a secure connection of the two components are shown in FIG.
- the at the lower end of the sleeve 10 z. B. at right angles to the outside area 60 partially engages under the core 2 on its lower end face 11.
- the pole part 13 of the sleeve 10 can have a thin-walled, upstanding area 61, which is slightly bent outwards in this area Sleeve 10 is behind and thus ensures the desired overlap. In both cases, a firm and tight connection can be achieved very easily by welding or soldering.
- FIG. 5 shows a magnetic circuit with a shortened core 2.
- the housing part 14 is made in two parts, a first housing part 14a largely forming a fuel inlet connection and a second housing part 14b representing a magnet housing.
- the housing part 14b has a cover section 63 covering the magnet coil 1, which also extends over the core 2 to the sleeve 10 and thus closes off the core 2 at the top.
- FIG. 6 A section through a core 2, for example along the line VI-VI in FIG. 2, is shown in FIG. 6. However, this sectional illustration already shows an alternative
- Embodiment. This is not a powder composite in the sense described above as a material for the core 2, but a solid (pure), ferritic material.
- the core 2 is formed in this embodiment from several, for example four, sectors 65 which, when put together, form a complete circular ring.
- the condition for achieving the positive effect of eddy current minimization is at least a division in two of core 2; six, eight or ten sectors 65 are also conceivable, for example.
- the ratio of the circumference to the area of the core 2 is advantageously increased by the plurality of sectors 65 which are electrically insulated from one another.
- the sectors 65 having a smaller magnetic resistance to the materials described above are inserted into the magnetic circuit within the magnetic coil 1.
- the individual sectors 65 are provided with an electrically insulating surface layer 66 (e.g.
- the sleeve 10 and the pole part 13 are in turn designed so that they influence or weaken the positive effect of the low eddy current volume as little as possible. Measures for this are a very thin pole part 13 and a sleeve 10 with a higher magnetic resistance than the materials of the sectors 65 or that of the powder composite material, so that no significant magnetic flux penetrates into the sleeve 10, which could otherwise produce eddy currents there. In addition, the materials of the sleeve 10 should always have a higher magnetic resistance than the materials of the pole part 13.
- Fuel wetting is thin-walled plastic components that e.g. can form the sleeve 10.
- an at least partial encapsulation of the core 2 by applying electrolytic layers or a resin is also conceivable.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (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 |
---|---|---|---|
DE19639117 | 1996-09-24 | ||
DE19639117A DE19639117A1 (de) | 1996-09-24 | 1996-09-24 | Brennstoffeinspritzventil |
PCT/DE1997/002160 WO1998013837A1 (de) | 1996-09-24 | 1997-09-24 | Brennstoffeinspritzventil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0862781A1 true EP0862781A1 (de) | 1998-09-09 |
EP0862781B1 EP0862781B1 (de) | 2003-03-19 |
Family
ID=7806688
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97909180A Expired - Lifetime EP0862781B1 (de) | 1996-09-24 | 1997-09-24 | Brennstoffeinspritzventil |
Country Status (7)
Country | Link |
---|---|
US (1) | US6244526B1 (de) |
EP (1) | EP0862781B1 (de) |
JP (1) | JP2000501570A (de) |
KR (1) | KR19990071489A (de) |
DE (2) | DE19639117A1 (de) |
RU (1) | RU2193685C2 (de) |
WO (1) | WO1998013837A1 (de) |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19751240A1 (de) * | 1997-11-19 | 1999-05-20 | Itt Mfg Enterprises Inc | Elektromagnetventil |
DE19843915C2 (de) * | 1998-09-24 | 2000-08-03 | Siemens Ag | Bauteilverbindung |
DE19927898A1 (de) * | 1999-06-18 | 2000-12-21 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
JP3631413B2 (ja) * | 2000-04-27 | 2005-03-23 | 株式会社デンソー | 電磁弁及びそれを用いた燃料噴射装置 |
DE10138930A1 (de) * | 2001-08-08 | 2002-10-17 | Bosch Gmbh Robert | Verfahren zur Befestigung einer Betätigungseinheit an einem Injektorkörper |
JP2003183702A (ja) * | 2001-12-18 | 2003-07-03 | Aisin Seiki Co Ltd | 軟磁性粉末材料、軟磁性成形体及び軟磁性成形体の製造方法 |
US7252249B2 (en) * | 2002-02-22 | 2007-08-07 | Delphi Technologies, Inc. | Solenoid-type fuel injector assembly having stabilized ferritic stainless steel components |
DE10256662A1 (de) | 2002-12-04 | 2004-06-17 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
US6807943B2 (en) | 2002-08-05 | 2004-10-26 | Husco International, Inc. | Motor vehicle fuel injection system with a high flow control valve |
US6793196B2 (en) | 2002-08-05 | 2004-09-21 | Husco International, Inc. | High flow control valve for motor vehicle fuel injection systems |
US20040027222A1 (en) * | 2002-08-06 | 2004-02-12 | Hazelwood John E. | Ignition apparatus having high density cylindrical laminated core |
JP4062221B2 (ja) * | 2003-09-17 | 2008-03-19 | 株式会社デンソー | 電磁アクチュエータ、電磁アクチュエータの製造方法、および燃料噴射弁 |
JP2005139943A (ja) * | 2003-11-05 | 2005-06-02 | Mitsubishi Materials Corp | 電磁石用コア及びその製造方法 |
US6976640B2 (en) * | 2003-12-04 | 2005-12-20 | Kuo-Liang Chen | Air gun with a quick-releasing device |
US20090267008A1 (en) * | 2007-09-14 | 2009-10-29 | Cummins Intellectual Properties, Inc. | Solenoid actuated flow control valve including stator core plated with non-ferrous material |
DE102009047525A1 (de) | 2009-12-04 | 2011-06-09 | Robert Bosch Gmbh | Elektromagnetisch betätigbares Ventil |
DE102010038437B4 (de) | 2010-07-27 | 2022-08-25 | Robert Bosch Gmbh | Magnetaktor und Verfahren zur Herstellung eines einstückigen Polkerns für einen Magnetaktor |
DE102010037922A1 (de) | 2010-10-01 | 2012-04-05 | Contitech Vibration Control Gmbh | Aktor |
DE102011080355A1 (de) * | 2011-08-03 | 2013-02-07 | Robert Bosch Gmbh | Kraftstoffeinspritzventil |
DE102011053289A1 (de) * | 2011-09-06 | 2013-03-07 | Contitech Vibration Control Gmbh | Aktor |
DE102013206958A1 (de) * | 2013-04-17 | 2014-10-23 | Robert Bosch Gmbh | Magnetventil mit verbessertem Öffnungs- und Schließverhalten |
EP2863043B1 (de) * | 2013-10-15 | 2017-01-04 | Continental Automotive GmbH | Kraftstoffeinspritzdüse |
DE102013223530A1 (de) * | 2013-11-19 | 2015-05-21 | Robert Bosch Gmbh | Ventil zum Zumessen von Fluid |
US9812248B2 (en) * | 2014-06-16 | 2017-11-07 | Delphi Technologies, Inc. | Ignition coil |
ITBO20150235A1 (it) * | 2015-05-05 | 2016-11-05 | Magneti Marelli Spa | Iniettore elettromagnetico di carburante con ottimizzazione delle saldature |
DE102016205102B4 (de) * | 2015-12-17 | 2022-01-05 | Robert Bosch Gmbh | Ventil in einer Hochdruckpumpe eines Kraftstoffeinspritzsystems und Hochdruckpumpe eines Kraftstoffeinspritzsystems mit diesem Ventil |
DE102016203516A1 (de) * | 2016-03-03 | 2017-09-07 | Robert Bosch Gmbh | Elektromagnetisch betätigbares Einlassventil und Hochdruckpumpe mit Einlassventil |
EP3354437A1 (de) * | 2017-01-25 | 2018-08-01 | Continental Automotive GmbH | Elektromagnetisches schaltventil sowie kraftstoffhochdruckpumpe |
GB2577072B (en) * | 2018-09-12 | 2021-04-21 | Delphi Automotive Systems Lux | Pole piece retention and insertion method |
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US2498702A (en) * | 1944-09-15 | 1950-02-28 | Nahman Gustave | Cylindrical magnetic core |
US4262877A (en) * | 1975-05-09 | 1981-04-21 | Lang Gregor L | Solenoid fluid valves |
US4231525A (en) | 1979-05-10 | 1980-11-04 | General Motors Corporation | Electromagnetic fuel injector with selectively hardened armature |
IT1165869B (it) * | 1979-10-19 | 1987-04-29 | Weber Spa | Valvola di iniezione di combustibile ad azionamento elettromagnetico per motori a combustione interna |
DE3230844A1 (de) | 1982-08-19 | 1984-02-23 | Robert Bosch Gmbh, 7000 Stuttgart | Elektromagnetisch betaetigbares ventil |
DE3408012A1 (de) * | 1984-03-05 | 1985-09-05 | Gerhard Dipl.-Ing. Warren Mich. Mesenich | Elektromagnetisches einspritzventil |
JPS6222410A (ja) * | 1985-07-23 | 1987-01-30 | Tdk Corp | 非晶質磁性合金粉末及びそれを用いた圧粉磁心 |
DE3601710C2 (de) * | 1986-01-22 | 1998-07-02 | Bosch Gmbh Robert | Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen |
KR880005354A (ko) * | 1986-10-08 | 1988-06-28 | 나까무라 겐조 | 전자 작동기 |
US5160447A (en) * | 1988-02-29 | 1992-11-03 | Kabushiki Kaisha Sankyo Seiki Seisakusho | Compressed powder magnetic core and method for fabricating same |
US4946107A (en) * | 1988-11-29 | 1990-08-07 | Pacer Industries, Inc. | Electromagnetic fuel injection valve |
US4958771A (en) | 1989-06-21 | 1990-09-25 | General Motors Corporation | Injection nozzle |
DE3933758A1 (de) * | 1989-10-10 | 1991-04-18 | Bosch Gmbh Robert | Elektromagnet |
DE4137786C2 (de) * | 1991-11-16 | 1999-03-25 | Bosch Gmbh Robert | Elektromagnetisch betätigbares Einspritzventil |
US5247918A (en) | 1992-09-17 | 1993-09-28 | Siemens Automotive L.P. | Sealing a direct injection fuel injector to a combustion chamber |
IT1261156B (it) * | 1993-12-30 | 1996-05-09 | Elasis Sistema Ricerca Fiat | Elettromagnete di comando di una valvola di dosaggio per un iniettore di combustibile |
DE19503821A1 (de) | 1995-02-06 | 1996-08-08 | Bosch Gmbh Robert | Elektromagnetisch betätigbares Ventil |
DE19601019A1 (de) | 1996-01-13 | 1997-07-17 | Bosch Gmbh Robert | Einspritzventil, insbesondere zum direkten Einspritzen von Kraftstoff in einen Brennraum eines Verbrennungsmotors |
-
1996
- 1996-09-24 DE DE19639117A patent/DE19639117A1/de not_active Ceased
-
1997
- 1997-09-24 WO PCT/DE1997/002160 patent/WO1998013837A1/de not_active Application Discontinuation
- 1997-09-24 DE DE59709572T patent/DE59709572D1/de not_active Expired - Lifetime
- 1997-09-24 EP EP97909180A patent/EP0862781B1/de not_active Expired - Lifetime
- 1997-09-24 RU RU98111759/06A patent/RU2193685C2/ru not_active IP Right Cessation
- 1997-09-24 JP JP10515151A patent/JP2000501570A/ja not_active Ceased
- 1997-09-24 US US09/077,170 patent/US6244526B1/en not_active Expired - Fee Related
- 1997-09-24 KR KR1019980703761A patent/KR19990071489A/ko not_active Application Discontinuation
Non-Patent Citations (1)
Title |
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See references of WO9813837A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1998013837A1 (de) | 1998-04-02 |
US6244526B1 (en) | 2001-06-12 |
KR19990071489A (ko) | 1999-09-27 |
EP0862781B1 (de) | 2003-03-19 |
DE19639117A1 (de) | 1998-03-26 |
JP2000501570A (ja) | 2000-02-08 |
DE59709572D1 (de) | 2003-04-24 |
RU2193685C2 (ru) | 2002-11-27 |
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