EP0861371B1 - Brennstoffeinspritzventil mit integrierter zündkerze - Google Patents
Brennstoffeinspritzventil mit integrierter zündkerze Download PDFInfo
- Publication number
- EP0861371B1 EP0861371B1 EP97938753A EP97938753A EP0861371B1 EP 0861371 B1 EP0861371 B1 EP 0861371B1 EP 97938753 A EP97938753 A EP 97938753A EP 97938753 A EP97938753 A EP 97938753A EP 0861371 B1 EP0861371 B1 EP 0861371B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- fuel injection
- valve needle
- needle
- armature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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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
- F02M61/04—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
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- 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
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- 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
- F02M51/0685—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 and the valve being allowed to move relatively to each other or not being attached to each other
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- 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
- F02M57/00—Fuel-injectors combined or associated with other devices
- F02M57/06—Fuel-injectors combined or associated with other devices the devices being sparking plugs
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- 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
- F02M2200/50—Arrangements of springs for valves used in fuel injectors or fuel injection pumps
- F02M2200/507—Adjusting spring tension by screwing spring seats
Definitions
- the invention relates to a fuel injector with an integrated spark plug according to the genus of the main claim. It is already known from EP-OS 0 661 446 Fuel injector with integrated spark plug for direct injection of Fuel in a combustion chamber of an internal combustion engine and for igniting the in the Combustion chamber injected fuel known.
- the fuel injector includes one Valve body, which at its spray end is one of a valve seat Has surrounding valve opening by a valve closing body when not excited Magnetic coil is closed, the one extending in the interior of the valve body Valve needle is arranged.
- the valve needle is by means of the one acting on an armature Solenoid for opening the fuel injector can be actuated electromagnetically.
- the valve seat and the valve closing body are on the inside of the inlet Valve opening arranged and the valve body is on the spray side to a central Ignition electrode formed, which is surrounded by a cup-shaped counter electrode.
- the high voltage is supplied to the central ignition electrode via the Valve body, the valve needle and a via a return spring with the valve needle connected axial extension from the end opposite the spray opening the fuel injector.
- the anchor encloses the inlet end of the Valve needle ring-shaped and is insulated from the valve needle via an insulating body.
- the fuel is supplied via an external ring channel that leads into the ends on the inlet side of the valve body.
- Another fuel injector with integrated spark plug is from EP-OS 0 632 198 known.
- This fuel injector is neither between the valve needle and the anchor connected to the valve needle still between the anchor and the Anchor opposite magnet core excitable by means of a magnetic coil electrical insulation provided. Rather, there is a between the valve body and the Housing arranged insulation body extended on the inlet side so that it Radially encloses the magnetic core towards the magnetic coil and thus one High voltage flashover to the solenoid coil prevented.
- This construction enables but not the formation of a closed, magnetic flux circuit ferromagnetic material. Therefore, to operate the fuel injector relatively large magnet coil currents required to pass through the magnet coil Magnetizing the magnetic core sufficiently.
- the fuel injector according to the invention with an integrated spark plug with the Characteristic features of the main claim has the advantage that the Isolation element arranged between the armature and the valve needle when actuated of the fuel injector is only subjected to pressure. Since that Fuel injection valve is designed as an externally opening valve, the valve needle for Open the fuel injector with one push, but not with one pull act so that that arranged between the armature and the valve needle Insulation element is subjected to pressure and not tensile stress.
- the insulation element can therefore be relatively simple, in particular cylindrical or cuboid, so that in the manufacture of what is preferably made of a ceramic material Isolation element no complex processing is necessary.
- a form-fitting Connection of the insulation element with the valve needle, as in a Tensile stress on the insulation element and the valve needle would not be necessary necessary.
- the fuel injector according to the invention with the characterizing features of Claim 1 also has the advantage that the valve needle after energizing the Solenoid coil immediately due to the engagement of the armature with the valve needle responds. In this way, an advantageous for precise fuel metering can be quick opening and very precise control of the injection timing. Furthermore, there is the further advantage that when the fuel injector closes only the relatively low inertial mass of the valve needle strikes the valve seat, since that is the Valve needle with the anchor connecting piece when closing the Fuel injector briefly lifts off the valve needle and not from it Valve seat, but is brought to a standstill by the system spring. This will make the Wear on the valve seat and valve closing body is reduced.
- the valve body is preferably by a radially surrounding, one-piece insulation body insulated from the housing.
- the inlet end of the Valve body can be used for the elements of magnetic actuation, in particular for Magnet coil, through a portion of the valve body projecting on this side Insulation body to be isolated.
- the valve body can protrude Section of the insulating body, an axial bore may be provided, which Isolating element encloses, so that by combining the insulating body with the Isolalionselement a complete insulation of the inlet and outside Valve body results.
- the system spring can be preloaded using an adjustable spring adjustment sleeve be adjustable.
- the advantage here is that that exerted by the closing spring Closing force and the contact force exerted by the contact spring in the opening direction can be adjusted to each other that the excitation of the solenoid at Opening the fuel injector necessary coil current is minimized and at the same time a reliable closing of the fuel injector is ensured.
- the fuel injector shown in Fig. 1 with an integrated spark plug for direct injection of fuel into a combustion chamber of a mixture-compressed, spark-ignited internal combustion engine and for igniting the in the combustion chamber injected fuel has a housing 1 made of an electrically conductive material, especially of metal. Inside the housing 1 is also an electrical conductive material, in particular metal, tubular valve body 2 arranged to the housing 1 by a high voltage insulating Insulation body 3 is insulated.
- the insulation body 3 is preferably made of one ceramic material and holds the necessary to ignite the fuel Ignition voltage stood.
- the valve body 2 has one in the exemplary embodiment bent first ignition electrode 5, which one at the spray end 6 of the Housing 1 arranged second ignition electrode 7 is opposite and with this Generation of a fuel igniting the fuel injected into the combustion chamber Spark discharge interacts.
- the ignition electrodes 5 and 7 are over a high-voltage cable 8 and an ignition controller, not shown, with a also not shown high voltage source connected.
- One as an extension of the High-voltage cable 8 executed high-voltage feed 9 is through a Connection bore 10 passed in the insulation body 3 and is with the Valve body 2 in contact.
- the contact between the high voltage supply 9 and the Valve body 2 can in a known manner by squeezing, soldering or the like respectively.
- a ground conductor of the high-voltage cable 8 is in a corresponding manner on the Housing 1 electrically contacted so that the led by the high voltage cable 8 Ignition voltage is present between the ignition electrodes 5 and 7 and there in known Discharges in the form of a spark discharge.
- the fuel injector is designed as an externally opening fuel injector.
- a valve needle extends in an axial longitudinal bore 11 of the valve body 2 12 by a formed on the spray-side end 4 of the valve body 2 Valve opening 13 through.
- the valve needle 12 expands on the spray side Valve opening 13 to a valve closing body 14, which with a valve opening 13 Valve seat 15 surrounding the spraying side interacts to form a sealing seat.
- a closing spring 16 is provided to the valve needle 12 against the spray opening marked x Bias the fuel injector and thus the fuel injector close.
- the closing spring 16 is in the Embodiment arranged in the longitudinal bore 11 of the valve body 2 and extends the valve needle 12 enclosing itself parallel to its longitudinal extent.
- the closing spring 16 is between the spray-side end 17 of the longitudinal bore 11 of the valve body 2 and a valve needle sleeve connected to the inlet end 18 of the valve needle 12 19 clamped.
- valve needle 12 When assembling the valve body 2 with the valve needle 12, the return spring 16 and the valve needle sleeve 19, the valve needle 12 of passed the spray side through the valve opening 13 and then the Return spring 16 pushed onto the valve needle 12 before the valve needle sleeve 19 the valve needle 12 placed and with this by welding, soldering or the like is connected.
- the return spring 16 When placing the valve needle sleeve 19 on the valve needle 12, the return spring 16 is biased so that the arranged on the valve needle 12 Valve closing body 14 bears against valve seat 15 with a sufficient closing force, so that the fuel injector is securely closed.
- the insulation body 3 has a circumferential, collar-shaped collar 20, the one End plate 21 of the housing 1 engages around the insulating body 3 in the axial direction to lock.
- the insulation body 3 projects beyond the inlet end 22 of the valve body 2 around a guide section 23 which has a preferably cylindrical bore 24 in which a preferably cylindrical insulation element 25 is preferred Can be used coaxially to the valve needle 12 so that the insulating element 25 in the axial Direction is movable and is guided by the guide portion 23.
- the diameter of the insulation element 25 can be slightly smaller be dimensioned as the diameter of the bore 24 in the guide section 23 of the Insulation body 3, so that between the inner surface of the bore 24 and the outer surface of the insulation element 25, an annular gap remains, which is the flow of the fuel allows.
- the insulation element can have axial grooves 26 or Have holes that the fuel past or through the insulation element 25 pass the insulation element 25 through.
- Valve body 2 carrying high voltage apart from its spray-side end face 27 insulated on all sides. A flashover of the high voltage on the housing 1 or others This makes electrically conductive components of the fuel injector safe prevented.
- Magnetic coil 28 which also has a connecting line, not shown Injection control unit, not shown, is connected.
- the winding of the solenoid 28 is located on a winding support 29 and is from an outside, first magnetic guide element 30 and one in contact with the first magnetic guide element 30 subsequent, second magnetic guide element 31 partially surrounded.
- the anchor 32 is relative to the Longitudinal axis 33 of the fuel injector is movable and is energized Magnetic coil 28 is drawn in the direction of the second magnetic guide element 31.
- this has in Embodiment at least one axial bore 34.
- the anchor 32 could, however alternatively also have circumferentially arranged grooves or it could be between the Armature 32 and the first magnetic guide element 30 and the armature 32 a corresponding annular gap may be formed for the winding support 29.
- the anchor 32 is connected to the insulation element 25 in the exemplary embodiment via a pin 35 which engages in a blind bore 36 formed on the insulation element 25.
- the armature 32 is moved in the opening direction of the Fuel injection valve acting system spring 37 via a from the pin 35 and the Insulation element 25 existing adapter with the valve needle 12 in contact Kept engaged.
- the bearing on the inlet-side end face 54 of the armature 32 Contact spring 37 is supported on and is in an inlet-side connection block 38 guided in a stepped bore 39, which on the inlet side leads to a fuel inlet connection 40 tapered.
- the connection block 38 is connected to the first magnetic guide element 30 e.g. connected by screwing.
- the one on the valve needle 12 is arranged Valve closing body 14 by means of the closing spring 16 on the spray side on the valve seat 15 pressed so that the fuel injector is closed.
- the second magnetic guide element 31 and the armature 32 formed magnetic flux circuit magnetic flux that directs the armature 32 toward the second magnetic guide 31 presses. In this way, the valve needle 12 over the pin 35 and that Insulation element 25 in the opening direction, i.e. in spray direction x, with a applied mechanical pressure that the valve closing body 14 from the valve seat 15th takes off and thus opens the fuel injector.
- the insulation element 25 can therefore be extremely simple, e.g. be cylindrical, which is the manufacture of the preferably from a ceramic and therefore relatively brittle material to be made insulation element 25 much simplified.
- the contact spring 37 presses the armature 32 and that of the pin 35 and the Insulation element 25 existing intermediate piece then in the direction of the valve needle 12 back until the insulation element 25 rests against the valve needle 12. Because of that Valve seat 15 strikes only the relatively small mass of valve needle 12, the Wear of the valve seat 15 kept low.
- the low stress of the Valve seat 15 and the valve closing body 14 is in the directly in the combustion chamber Internal combustion engine fuel injector is particularly important because of the Valve seat 15 and the valve closing body 14 by the arrangement in or near the Combustion chamber is thermally highly loaded.
- the contact spring 37 can be dimensioned relatively weak compared to the closing spring 16 because you only the task of braking the armature 32, the pin 35 and the Isolation element 25 when closing the fuel injector and switching a system pressure to the armature 32 via the pin 35 and the Isolation element 25 existing intermediate piece with the valve needle 12 in adjacent It is important to keep intervention.
- the insulation member 25 when the fuel injector is actuated only under pressure, but not under tension, the tensile strength of the insulation element 25, which is preferably made of a ceramic material to make special demands.
- Those used for electromagnetic actuation of the fuel injector Components are from the insulation body 3 and the insulation element 25 High voltage leading valve body 2 completely isolated, so that a rollover High voltage on these components effectively prevents what the Operational reliability of the further developed fuel injector according to the invention significantly improved.
- Fig. 2 shows a preferred embodiment of the valve needle 12 and the valve closing body 14 in the region of that provided on the spray-side end 4 of the valve body 3 Valve opening 13 in an enlarged view.
- valve needle 12 extends through the valve opening 13 and points at it injection-side end of the valve closing body 14.
- the valve closing body 14 comprises a frusto-conical portion 41, that of a frusto-conical valve seat 42 is opposite to the valve seat 15. Between the frusto-conical section 41 of the valve closing body 14 and the frustoconical valve seat surface 42 of the Valve seat 15 therefore creates an annular gap 43 when the fuel injector is opened, which defines the spray cone angle of the fuel jet.
- valve needle 12 Upstream of the Valve closing body 14, valve needle 12 has a cylindrical metering section 44 on, which is guided in a cylindrical portion 45 of the valve opening 13. Between the inner surface of the cylindrical portion 45 of the valve opening 13 and the outer surface of the metering section 44 of the valve needle 12 there is a narrow cylindrical annular gap 46, which serves as a fuel metering gap when the fuel injector is open.
- the throttling set for the fuel metering on cylindrical annular gap 46 is practically independent of the stroke and that of the spray opening serving annular gap 43 relatively large without influencing the fuel metering can be dimensioned so that the risk of not closing Fuel injector as a result of between the valve closing body 14 and the Valve seat 15 stuck dirt particles can be significantly reduced.
- valve needle points in the flow direction above the cylindrical metering section 44 a tapered section 47.
- frustoconical section 48 tapers the valve opening 13 in the direction of flow from a section 49 with an enlarged diameter to the cylindrical section 45 already described.
- valve needle 12 the Valve opening 13
- valve closing body 14 the valve closing body 14
- valve seat 15 the valve seat 15 on the spray side.
- FIG. 3 shows a further development of the invention based on FIGS. 1 and 2 described fuel injector with integrated spark plug.
- the already Components described are provided with the same reference numerals, so that a description in this regard is unnecessary.
- connection block 38 is compared to the embodiment shown in FIG. 1 expanded on the inlet side to the fuel inlet port 40.
- a longitudinal bore 50 is provided, into which the contact spring 37 is inserted.
- an adjustable spring adjusting sleeve 51 is provided, the axial position of which Longitudinal bore 50 e.g. is adjustable by means of a thread.
- Spring adjusting sleeve 51 accessible from the fuel inlet port 40.
- the Spring adjusting sleeve 51 has an axial longitudinal bore 52, which in the exemplary embodiment A throttle 53 opens into the longitudinal bore 50 of the connection block 38.
- the bias of the contact spring 37 can be adjusted in this way via the spring adjusting sleeve 51 be that after each opening of the fuel injector, the armature 32 on the off the pin 35 and the insulation element 25 existing intermediate piece quickly with the inlet end 18 of the valve needle 12 can be brought into engagement and on the other hand the fuel injector due to the resulting force difference from the spring force acting in the closing direction of the closing spring 16 and in Opening force acting spring force of the contact spring 37 without excitation of the Solenoid 28 remains securely closed.
- the one exerted by the contact spring 37 Spring force is therefore less than the spring force exerted by the closing spring 16.
Description
Claims (11)
- Brennstoffeinspritzventil mit einer integrierten Zündkerze zum direkten Einspritzen von Brennstoff in einen Brennraum einer Brennkraftmaschine und zum Zünden des in den Brennraum eingespritzten Brennstoffs miteinem Ventilkörper, welcher an seinem abspritzseitigen Ende eine von einem Ventilsitz umgebene Ventilöffnung und eine erste Zündelektrode aufweist, wobei die Ventilöffnung von einem an einer Ventilnadel angeordneten Ventilschließkörper verschließbar ist und die Ventilnadel mittels einer auf einen Anker einwirkenden Magnetspule zum Öffnen des Brennstoffeinspritzventils elektromagnetisch betätigbar ist, undeiner von dem Ventilkörper hochspannungsisolierten zweiten Zündelektrode, die zur Erzeugung einer den in den Brennraum eingespritzten Brennstoff zündenden Funkenentladung mit der an dem Ventilkörper ausgebildeten ersten Zündelektrode zusammenwirkt,daß sich die Ventilnadel (12) durch die Ventilöffnung (13) hindurch bis zu dem abspritzseitig angeordneten Ventilschließkörper (14) erstreckt und eine Schließfeder (16) die Ventilnadel (12) entgegen ihrer in Abspritzrichtung (x) gerichteten Öffnungsrichtung so vorspannt, daß der Ventilschließkörper (14) an dem Ventilsitz (15) bei geschlossenem Brennstoffeinspritzventil abspritzseitig anliegt, unddaß der Anker (32) mittels einer in Öffnungsrichtung wirkenden Anlagefeder (37) über ein zwischen dem Anker (32) und der Ventilnadel (12) angeordnetes Zwischenstück (35, 25) mit der Ventilnadel (12) in anliegendem Eingriff gehalten wird, wobei das Zwischenstück (35, 25) ein hochspannungsisolierendes Isolationselement (25) umfaßt.
- Brennstoffeinspritzventil nach Anspruch 1,
dadurch gekennzeichnet, daß der Ventilkörper (12) bezüglich der Längsachse (33) des Brennstoffeinspritzventils radial von einem hochspannungsisolierenden Isolationskörper (3) umgeben ist, der von einem elektrisch leitfähigen Gehäuse (1) umschlossen ist, an dessen abspritzseitigen Ende (6) die zweite Zündelektrode (7) angeordnet ist. - Brennstoffeinspritzventil nach Anspruch 2,
dadurch gekennzeichnet, daß der Isolationskörper (3) einen Führungsabschnitt (23) aufweist, der das der Ventilöffnung (13) abgewandte, zulaufseitige Ende (22) des Ventilkörpers (2) überragt und eine axiale Bohrung (24) aufweist, die das Isolationselement (25) so umschließt, daß das Isolationselement (25) darin beweglich geführt ist. - Brennstoffeinspritzventil nach Anspruch 2 oder 3,
dadurch gekennzeichnet, daß eine Hochspannungszuführung (9) den Isolationskörper (3) in bezüglich der Längsachse (33) des Brennstoffeinspritzventils radialer Richtung durchdringt und mit dem Ventilkörper (2) verbunden ist. - Brennstoffeinspritzventil nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, daß sich die Ventilnadel (12) im wesentlichen über die gesamte Länge des die Ventilnadel (12) aufnehmenden Ventilkörpers (2) erstreckt und das Isolationselement (25) an dem dem Ventilschließkörper (14) gegenüberliegenden, zulaufseitigen Ende (18) der Ventilnadel (12) aufgrund der Beaufschlagung durch die Anlagefeder (23) bündig anliegt. - Brennstoffeinspritzventil nach Anspruch 5,
dadurch gekennzeichnet, daß die Schließfeder (16) die Ventilnadel (12) umschließend im Inneren des Ventilkörpers (12) angeordnet und zwischen dem abspritzseitigen Ende (4) des Ventilkörpers (12) und dem zulaufseitigen Ende (18) der Ventilnadel (12) eingespannt ist. - Brennstoffeinspritzventil nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, daß das Verbindungsstück (25, 35) ein zwischen dem Anker (32) und dem Isolationselement (25) angeordnetes stiftförmiges Element (35) umfaßt, das in eine entsprechende Ausnehmung (36) des Isolationselements (25) einsteckbar ist. - Brennstoffeinspritzventil nach Anspruch 7,
dadurch gekennzeichnet, daß der Anker (32), das stiftförmige Element (35), das Isolationselement (25) und die Ventilnadel (12) axialsymmetrisch ausgebildet und zueinander koaxial angeordnet sind. - Brennstoffeinspritzventil nach einem der Ansprüche 1 bis 8,
dadurch gekennzeichnet, daß die Anlagefeder (37) eine dem Zwischenstück (25, 35) abgewandte Stirnseite (54) des Ankers (32) beaufschlagt. - Brennstoffeinspritzventil nach Anspruch 9,
dadurch gekennzeichnet, daß sich die Anlagefeder (37) an einer justierbaren Federeinstellhülse (51) abstützt. - Brennstoffeinspritzventil nach einem der Ansprüche 1 bis 10,
dadurch gekennzeichnet, daß die Ventilnadel (12) stromaufwärts des Ventilschließkörpers (14) einen zylindrischen Zumeßabschnitt (44) aufweist, der von einem zylindrischen Abschnitt (45) der Ventilöffnung (13) so umschlossen ist, daß zwischen der Außenfläche des zylindrischen Zumeßabschnitts (44) der Ventilnadel (12) und der Innenfläche des zylindrischen Abschnitts (45) der Ventilöffnung (13) ein zylindrischer Ringspalt (46) gebildet ist, der einen Zumeßquerschnitt festlegt.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19638025A DE19638025A1 (de) | 1996-09-18 | 1996-09-18 | Brennstoffeinspritzventil mit integrierter Zündkerze |
DE19638025 | 1996-09-18 | ||
PCT/DE1997/001704 WO1998012431A1 (de) | 1996-09-18 | 1997-08-11 | Brennstoffeinspritzventil mit integrierter zündkerze |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0861371A1 EP0861371A1 (de) | 1998-09-02 |
EP0861371B1 true EP0861371B1 (de) | 2002-04-03 |
Family
ID=7805995
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97938753A Expired - Lifetime EP0861371B1 (de) | 1996-09-18 | 1997-08-11 | Brennstoffeinspritzventil mit integrierter zündkerze |
Country Status (5)
Country | Link |
---|---|
US (1) | US5983855A (de) |
EP (1) | EP0861371B1 (de) |
JP (1) | JP2000500840A (de) |
DE (2) | DE19638025A1 (de) |
WO (1) | WO1998012431A1 (de) |
Cited By (1)
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DE10337630A1 (de) * | 2003-08-16 | 2005-03-17 | Bayerische Motoren Werke Ag | Brennstoff-Einspritzventil mit einer integrierten Zündkerze |
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US20030012985A1 (en) | 1998-08-03 | 2003-01-16 | Mcalister Roy E. | Pressure energy conversion systems |
US6009856A (en) * | 1998-05-27 | 2000-01-04 | Caterpillar Inc. | Fuel injector isolation |
DE19828848A1 (de) * | 1998-06-27 | 1999-12-30 | Bosch Gmbh Robert | Brennstoffeinspritzventil mit integrierter Zündkerze |
JP2003512561A (ja) * | 1999-10-18 | 2003-04-02 | オービタル、エンジン、カンパニー(オーストラリア)、プロプライエタリ、リミテッド | 内燃エンジンにおける燃料の直接噴射 |
AUPQ588500A0 (en) * | 2000-02-28 | 2000-03-23 | Orbital Engine Company (Australia) Proprietary Limited | Combined fuel injection and ignition means |
DE10012969B4 (de) * | 2000-03-16 | 2008-06-19 | Daimler Ag | Einspritzdüse und ein Verfahren zur Bildung eines Kraftstoff-Luftgemischs |
ATE358770T1 (de) * | 2000-06-08 | 2007-04-15 | Knite Inc | Verbrennungsverbesserungssystem und methode |
DE10159909A1 (de) * | 2001-12-06 | 2003-06-18 | Bosch Gmbh Robert | Brennstoffeinspritzventil-Zündkerze-Kombination |
US6886762B2 (en) * | 2001-12-20 | 2005-05-03 | Caterpillar Inc. | Nozzle insert for dual mode fuel injector |
DE10203800A1 (de) * | 2002-01-31 | 2003-08-14 | Bosch Gmbh Robert | Brennraumanordnung |
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-
1996
- 1996-09-18 DE DE19638025A patent/DE19638025A1/de not_active Withdrawn
-
1997
- 1997-08-11 DE DE59706859T patent/DE59706859D1/de not_active Expired - Fee Related
- 1997-08-11 JP JP10514137A patent/JP2000500840A/ja not_active Withdrawn
- 1997-08-11 EP EP97938753A patent/EP0861371B1/de not_active Expired - Lifetime
- 1997-08-11 US US09/068,373 patent/US5983855A/en not_active Expired - Fee Related
- 1997-08-11 WO PCT/DE1997/001704 patent/WO1998012431A1/de active IP Right Grant
Cited By (1)
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DE10337630A1 (de) * | 2003-08-16 | 2005-03-17 | Bayerische Motoren Werke Ag | Brennstoff-Einspritzventil mit einer integrierten Zündkerze |
Also Published As
Publication number | Publication date |
---|---|
WO1998012431A1 (de) | 1998-03-26 |
EP0861371A1 (de) | 1998-09-02 |
US5983855A (en) | 1999-11-16 |
DE59706859D1 (de) | 2002-05-08 |
JP2000500840A (ja) | 2000-01-25 |
DE19638025A1 (de) | 1998-03-19 |
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