EP1084344B1 - Brennstoffeinspritzventil - Google Patents
Brennstoffeinspritzventil Download PDFInfo
- Publication number
- EP1084344B1 EP1084344B1 EP00909056A EP00909056A EP1084344B1 EP 1084344 B1 EP1084344 B1 EP 1084344B1 EP 00909056 A EP00909056 A EP 00909056A EP 00909056 A EP00909056 A EP 00909056A EP 1084344 B1 EP1084344 B1 EP 1084344B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- needle
- valve
- collar
- fuel injection
- driver
- 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
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 105
- 238000002347 injection Methods 0.000 title claims abstract description 30
- 239000007924 injection Substances 0.000 title claims abstract description 30
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 238000002485 combustion reaction Methods 0.000 claims abstract description 10
- 239000007921 spray Substances 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 230000003252 repetitive effect Effects 0.000 description 5
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002996 emotional effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Images
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 is based on a fuel injector according to the genus of claim 1 and claim 2.
- DE 195 34 445 C2 describes a fuel injector known according to the preamble of claim 1. That from this Document resulting fuel injector exists from a two-part valve housing, in which a valve needle is axially movable. The The valve housing has a fuel connection at one end on which fuel the fuel injector is fed. At the other end, the valve needle is involved the valve housing together to form a sealing seat, the Valve needle with a return spring in the closed position is held. This is for actuating the valve needle provided on the inlet side with a pressure shoulder, which with cooperates with a piezoelectric actuator and firmly with the valve needle is connected. When pressing the The valve needle acts against the force of the actuator 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 movable in the valve body on the inlet side Opening or closing the fuel injector from Actuator or a large inert mass from the return spring, resulting from the mass of the valve needle and the mass of the Pressure shoulder is assembled, operated. Also are the two for axially movable guidance of the valve needle provided guides of the valve needle in the spray side End and on the pressure shoulder at the inlet end to coordinate with each other, which means the production of the fuel injector is relatively expensive and the fuel injector susceptible to bending or Tensioning of the valve needle and / or the valve housing is.
- the valve needle does not depend on the closing movement of the actuator decoupled.
- valve needle Due to the fixed, rigid guidance of the valve needle the position of the valve needle in the sealing seat is also fixed given, whereby the valve needle does not affect one Manufacturing or wear related to the ideal position different sealing seat can center. This is what happens an uneven, increased wear of the valve needle in the Area of the sealing seat, in particular for a decrease the tightness of the sealing seat of the fuel injector in the closed position and to change the geometry of the hosed fuel jet.
- a fuel injector for Fuel injection systems of internal combustion engines are known to be excitable has piezoelectric actuator.
- the valve also has one of the actuator by means of a valve needle actuated valve closing body, which with a Valve seat surface cooperates to form a sealing seat and by a return spring Is held in the closed position.
- the actuator works via two connecting elements, the are carried out separately from the valve needle, on the valve needle, which of connecting element remote from the actuator as a sleeve-shaped needle driver is trained.
- the valve needle is arranged to be axially movable relative to the needle driver. A collar of the needle driver engages behind a needle collar of the valve needle on the the side facing away from the return spring.
- valve needle alone consists of three individual components must be put together and in addition to the transmission of the actuator movement the valve needle provided two further connecting elements which interlock are. To brace the connecting elements against each other, is next to the Return spring another spring required.
- the fuel injector according to the invention with the Features of claim 1 and claim 2 have the advantage that a low-wear, low-friction design results.
- the fuel injector is approximate bounce-free, which results when the fuel injector is actuated the duration of the spraying process and the Have the spray quantity of the fuel specified.
- valve needle is advantageously only on one Place of a valve needle guide axially movable.
- the valve needle is particularly advantageous small and low in mass.
- valve needle guide is advantageously located on one of them On a swirl disk. This is the Valve needle coaxial to the axis of the fuel injector performed, which is a through the valve needle uniform power transmission to the sealing seat and one uniform wear in the area of the sealing seat results.
- valve needle guide and / or the Swirl disc recesses for carrying fuel on This is a simple structural measure for Perform the fuel given.
- the needle driver advantageously has at least a recess or a hole for performing Fuel on. This allows the inside of the needle driver serve as a fuel line, the fuel from the Inside the needle driver through the recess in the direction the sealing seat is directed.
- the recess by at least one in is advantageous axial slot in the needle driver educated. This makes the shape of the recess Flow direction of the fuel adjusted.
- the needle driver advantageously has an opening radial extensions at its needle collar end, which underneath the adjacent end face of the needle collar Flow windows overlap. Through the The resulting flow window can direct the fuel become.
- the needle driver has a circular shape Opening at its needle collar end and is the End face of the needle collar is polygonal, so that the end face of the needle collar through the opening of the Needle driver with the formation of flow openings is partially overlapped. This is on the needle driver no further structural changes are necessary and it results flow-oriented flow openings.
- the return spring is advantageously supported on the on a setting element facing away from the needle collar from, the adjusting element with the needle driver connected is.
- the return spring can production-technically simple, defined preloaded.
- the for Opening and closing the fuel injector required forces can then by the actuator and at least another spring can be specified.
- Fig. 1 shows an axial excerpt Sectional view of a fuel injector according to the invention 1.
- the fuel injector 1 is here designed as an internal fuel injector 1.
- the fuel injector 1 is used in particular for direct injection of fuel, especially of Petrol, in a combustion chamber of a mixture compressing spark-ignition internal combustion engine as a so-called Gasoline direct injection valve.
- the fuel injector according to the invention is also suitable for others Use cases.
- the fuel injection valve 1 has a valve housing 2 on, which consists of a front valve housing 3, a rear valve housing 4 and a fuel connection 5th composed.
- a valve closing body which can be actuated by means of a valve needle 6 7, which in the illustrated embodiment with the Valve needle 6 is formed in one piece.
- the Valve closing body 7 is frustoconical in Spray direction tapered and acts with a valve seat surface 9 formed on a valve seat body 8 to form a sealing seat.
- the valve needle 6 by a return spring 10, which via a valve needle collar 11 of the valve needle 6 acts on the valve needle 6, in Closed position maintained.
- the return spring 10 is on the Side of the needle collar 11 by a centering body 12 centered.
- valve needle 6 the needle collar 11 and the centering body 12 formed in one piece.
- the very small and low mass (0.1 .... 0.5 g) valve needle 6 is at its axial Movement guided by a single valve needle guide 13.
- the valve needle guide 13 lies on hers spray-side end face on a swirl disk 14.
- the Swirl disk 14 is in the front part of the valve housing 3 attached and is on the valve needle guide 13th opposite end face on the valve seat body 8.
- the Valve needle guide 13 and the swirl disk 14 recesses 15a, 15b, 16a, 16b, with the cutouts 16a, 16b in the swirl disk 14 are designed as swirl channels.
- A is used to actuate the fuel injection valve 1 Actuator 17, the piezoelectric, magnetostrictive or is carried out electromagnetically (Fig. 10).
- the actuation of the actuator 17 takes place via an electrical control signal, the one via an electrical connection 18 and one not Electrical lead shown on the actuator 17th is transmitted.
- the actuator 17 When the actuator 17 is actuated, it expands This moves out and moves a tubular, the Actuator 17 protruding in an inner longitudinal opening Needle driver 19 against the force of a biasing spring 20 towards 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 in the direction of the fuel connection 5 emotional.
- valve closing body 7 lifts from the Valve seat surface 9 of the valve seat body 8 and gives the Seal seat free. Due to the gap between Valve closing body 7 and the valve seat surface 9 of the Valve seat body 8 causes fuel to escape the fuel injector 1 into the combustion chamber Internal combustion engine.
- the resetting of the needle driver 19 takes place via the Preload spring 20, which is on the fuel connection 5 against the Needle driver 19 is supported, with the biasing spring 20th the actuator 17 is also reset.
- the Needle driver 19 has an inner recess 21 in which there is a sleeve-shaped adjusting element 22.
- On the return element 10 is supported on the adjusting element 22 from the side opposite the needle collar 11.
- 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 adjustment element 22 in Direction of the needle collar 11 on the valve needle 6.
- 19 flow openings are in the needle driver educated.
- FIG. 2 is an axial excerpt Sectional view of a detail of the spray end of the Fuel injector 1 shown. Already elements described are with matching Provide reference numerals. On a repetitive description is waived in this regard.
- valve closing body 7 partially spherical.
- This configuration is in the 1 in the description of FIG Valve needle 6 and the valve closing body 7 in particular advantageous.
- a bottom section 37 of the A needle opening 19 has a central opening 38, which has a larger diameter than the valve needle 6 and is penetrated by this. That way is a annular annular gap 39 between needle driver 19 and valve needle 6 formed.
- the Outer diameter of the needle collar 11 is smaller than that Inner diameter of the needle driver 19, so that between Needle collar 11 and needle driver 19 an annular Annular gap 26 is formed.
- the needle driver 19 acts with its bottom portion 37 on a stop surface 27 of the Needle collar 11 a.
- FIG. 3 shows that designated III in Fig. 2 Detail section, an advantageous development of the Needle collar 11 is executed.
- radial mobility to enable the valve needle 6 they are already described annular gaps 26, 39 between valve needle 6 and
- Needle collar 11 and the needle driver 19 formed. there are the valve needle 6, the needle collar 11 and the Centering body 12 formed in one piece. Between the Needle collar 11, the valve needle 6 and the bottom portion 37 of the needle driver 19, a gap 28 is formed, which towards the valve axis 23 in the radial direction widened. In the sectional drawing, the gap 28 therefore has a wedge shape. The stop surface 27 is reduced therefore on a narrow, circular surface.
- the gap 28 can also by a Special design of the bottom portion 37 of the Needle driver 19 to be executed. Not in one The illustrated embodiment can stop surface 27 be inclined in the opposite way, so that the Gap 28 is reduced towards the valve axis 23.
- Fig. 4 shows an axial excerpt Sectional view of a detail of the fuel injector according to the invention 1. Elements are already described provided with the same reference numerals, whereby a repetitive description is unnecessary.
- the illustrated embodiment has the needle driver 19th lateral bores 25a, 25b on the flow of Fuel from the inner recess 21 through the holes Allow 25a, 25b in the direction of the sealing seat.
- Fig. 5 shows an axial excerpt Sectional view of a detail of the fuel injector according to the invention 1. Elements are already described provided with the same reference numerals, whereby a repetitive description is unnecessary.
- illustrated embodiment has the needle driver 19 slots 29a, 29b running in the axial direction, through which the fuel from the inner recess 21 of the Needle driver 19 can flow in the direction of the sealing seat.
- More than two slots 29a, 29b can also be provided to increase fuel flow enable.
- Fig. 6 shows an axial excerpt Sectional view of a detail of the fuel injector according to the invention 1. Elements are already described provided with the same reference numerals, whereby a repetitive description is unnecessary. By doing The illustrated embodiment is the opening 38 in the Bottom portion 37 of the needle driver 19 with radial Extensions 31a - 31c executed, in this Only the radial extension 31a can be seen. The radial extension 31a overlaps the adjacent lower one 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 to the detail of the fuel injector according to the invention 1.
- 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. um Flow windows spaced 120 ° apart 33a to 33c the flow of fuel from the Inside the needle driver 19 in the direction of the sealing seat the fuel injector 1.
- Fig. 8 shows an axial excerpt Sectional view of a detail of the fuel injector according to the invention 1. Elements are already described provided with the same reference numerals.
- the bottom portion 37 of the Needle driver 19 has a circular opening 38 which by a comparatively large inner diameter distinguished.
- the needle collar 11 is triangular and is supported in the area of its stop surface 27 Contact surfaces 35a to 35c, in this illustration only the contact surface 35a can be seen.
- 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 exactly on the contact surface 35a opposite side.
- Fig. 9 is the front view designated IX in Fig. 8 shown on the detail of the fuel injector 1.
- the Needle driver 19 has a circular opening 38 its needle-collar-side end, which the triangular trained needle collar 11 of the valve needle 6 with formation partially overlapped by flow windows 33a to 33c.
- the Needle driver 19 acts on contact surfaces 35a to 35c the needle collar 11 of the valve needle 6. Since that through the Contact areas 35a to 35c given total contact area is relatively small, there is the advantage that in the Description of FIGS. 2 and 3 explained liquid cushion between needle driver 19 and needle collar 11 under the Contact surfaces 35a to 35c by the return spring 10 can be displaced quickly, making a small one Influence of the liquid cushion on the switching time of the Fuel injector 1 results.
- Fig. 10 shows an axial excerpt Sectional view of another embodiment of a Fuel injector according to the invention 1. Already elements described are with matching Provide reference numerals so that a repetitive Description unnecessary.
- the front valve housing 3 is shown in the Embodiment to the rear valve housing 4 via a Screw connection 40 attached.
- a sealing ring 41 which is in a circumferential Groove 42 of the front valve housing 3 is introduced.
- For the setting of a stroke of the valve needle 6 is one Stroke shim 43 between an inner protrusion 44 of the rear valve housing 4 and the front valve housing 3 provided.
- the bias spring 20 is supported in the illustrated embodiment on an adjusting element 45 from, with the axial position of the adjusting element 45 the bias of the bias spring 20 can be adjusted can.
- the biasing spring 20 acts on a magnet armature 46 a, whereby the needle driver 19 in the direction of Sealing seat is subjected to a biasing force.
- the guidance of the valve needle 6 takes place through the valve needle guide 13. Downstream the valve needle guide 13 is a swirl disk 14 arranged.
- an electromagnetic Actuatable actuator 46, 47, the solenoid 47 and the Magnetic armature 46 includes.
- the invention is not based on those described Embodiments limited. In particular, it can Fuel injector 1 also as an externally opening fuel injector 1 be executed.
- the Needle driver 19 is not formed inside the actuator 17 be, and the return spring 10 need not be in the inner Recess 21 of the needle driver 19 may be arranged.
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- 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
- Fig. 1
- einen auszugsweisen axialen Schnitt durch ein Ausführungsbeispiel eines erfindungsgemäßen Brennstoffeinspritzventils,
- Fig. 2
- einen auszugsweisen axialen Schnitt durch den abspritzseitigen Bereich eines Ausführungsbeispiels des erfindungsgemäßen Brennstoffeinspritzventils,
- Fig. 3
- eine vorteilhafte Weiterbildung des in Fig. 2 dargestellten, mit III bezeichneten Ausschnitts,
- Fig. 4
- einen auszugsweisen axialen Schnitt durch einen Teil des Brennstoffeinspritzventils, wobei in dem Nadelmitnehmer zwei bohrungsförmige Durchflußöffnungen vorgesehen sind,
- Fig. 5
- einen auszugsweisen axialen Schnitt durch ein erfindungsgemäßes Brennstoffeinspritzventil, wobei zwischen dem Nadelbund der Ventilnadel und dem Bund des Nadelmitnehmers Schlitze zum Durchleiten des Brennstoffs vorgesehen sind,
- Fig. 6
- einen auszugsweisen axialen Schnitt durch ein erfindungsgemäßes Brennstoffeinspritzventil, wobei im Nadelmitnehmer Aussparungen mit radialen Erweiterungen vorgesehen sind,
- Fig. 7
- die Vorderansicht des in Fig. 6 dargestellten Ausführungsbeispiels in der mit VII bezeichneten Richtung,
- Fig. 8
- einen auszugsweisen axialen Schnitt durch ein Ausführungsbeispiel des erfindungsgemäßen Brennstoffeinspritzventils, bei dem der Nadelbund dreikantförmig ausgebildet ist,
- Fig. 9
- die Vorderansicht des in Fig. 8 dargestellten Ausführungsbeispiels in der mit IX bezeichneten Richtung, und
- Fig. 10
- einen auszugsweisen axialen Schnitt durch ein weiteres Ausführungsbeispiel eines erfindungsgemäßen Brennstoffeinspritzventils.
Claims (13)
- Brennstoffeinspritzventil (1), insbesondere Einspritzventil für Brennstoffeinspritzanlagen von Brennkraftmaschinen, mit einem erregbaren piezoelektrischen oder magnetostriktiven Aktor (17), einem von dem Aktor (17) mittels einer Ventilnadel (6) betätigbaren Ventilschließkörper (7), der mit einer Ventilsitzfläche (9) zu einem Dichtsitz zusammenwirkt und durch eine Rückstellfeder (10) in Schließstellung gehalten wird, wobei der Aktor (17) über einen von der Ventilnadel (6) getrennten, hülsenförmigen Nadelmitnehmer (19) auf die Ventilnadel (6) einwirkt, wobei die Ventilnadel (6) axial beweglich zum Nadelmitnehmer (19) angeordnet ist und ein Bund (37) des Nadelmitnehmers (19) einen Nadelbund (11) der Ventilnadel (6) auf der der Rückstellfeder (10) abgewandten Seite hintergreift,
dadurch gekennzeichnet, daß der Nadelmitnehmer (19) den Aktor (17) in einer inneren Längsöffnung durchragt. - Brennstoffeinspritzventil (1), insbesondere Einspritzventil für Brennstoffeinspritzanlagen von Brennkraftmaschinen, mit einem erregbaren Aktor (46, 47), einem von dem Aktor (46, 47) mittels einer Ventilnadel (6) betätigbaren Ventilschließkörper (7), der mit einer Ventilsitzfläche (9) zu einem Dichtsitz zusammenwirkt und durch eine Rückstellfeder (10) in Schließstellung gehalten wird,
wobei der Aktor (46, 47) über einen von der Ventilnadel (6) getrennten, hülsenförmigen Nadelmitnehmer (19) auf die Ventilnadel (6) einwirkt, wobei die Ventilnadel (6) axial beweglich zum Nadelmitnehmer (19) angeordnet ist und ein Bund (37) des Nadelmitnehmers (19) einen Nadelbund (11) der Ventilnadel (6) auf der der Rückstellfeder (10) abgewandten Seite hintergreift,
dadurch gekennzeichnet, daß der Aktor (46, 47) als elektromagnetischer Aktor mit einer Magnetspule (47) und einem Magnetanker (46) ausgeführt ist und der Nadelmitnehmer (19) in eine innere Längsöffnung des Magnetankers (46) hineinragt. - Brennstoffeinspritzventil nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß die Ventilnadel (6) von einer einzigen Ventilnadelführung (13) axial beweglich geführt ist. - Brennstoffeinspritzventil nach Anspruch 3,
dadurch gekennzeichnet, daß die Ventilnadelführung (13) und/oder eine stromabwärts angeordnete Drallscheibe (14) Aussparungen (15a, 15b, 16a, 16b) zum Durchführen von Brennstoff aufweisen. - Brennstoffeinspritzventil nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, daß zwischen dem Nadelbund (11) der Ventilnadel (6) und dem Bund (37) des Nadelmitnehmers (19) ein Spalt (28) ausgebildet ist, welcher sich in radialer Richtung, zur Ventilachse (23) hin verbreitert. - Brennstoffeinspritzventil nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, daß der Nadelmitnehmer (19) zumindest eine Aussparung (25a, 25b, 29a, 29b, 38) zum Durchführen von Brennstoff aufweist. - Brennstoffeinspritzventil nach Anspruch 6,
dadurch gekennzeichnet, daß die Aussparung durch eine Bohrung (25a, 25b) im Nadelmitnehmer (19) ausgebildet ist. - Brennstoffeinspritzventil nach Anspruch 6,
dadurch gekennzeichnet, daß die Aussparung durch einen in axialer Richtung verlaufenden Schlitz (29a, 29b) im Nadelmitnehmer (19) ausgebildet ist. - Brennstoffeinspritzventil nach einem der Ansprüche 6 bis 8,
dadurch gekennzeichnet, daß der Nadelmitnehmer (19) eine Öffnung (38) mit radialen Erweiterungen (31a - 31c) an seinem Bund (37) aufweist, die eine angrenzende Anschlagfläche (27) des Nadelbundes (11) unter Bildung von Durchflußfenstern (33a - 33c) überlappen. - Brennstoffeinspritzventil nach einem der Ansprüche 6 bis 8,
dadurch gekennzeichnet, daß der Nadelmitnehmer (19) eine kreisförmige Öffnung (38) an seinem Bund (37) aufweist und daß der Nadelbund (11) mehrkantig ausgebildet ist, so daß eine Anschlagfläche (27) des Nadelbundes (11) von der Öffnung (38) unter Bildung von Durchflußfenstern (33a - 33c) teilweise überlappt ist. - Brennstoffeinspritzventil nach einem der Ansprüche 1 bis 10,
dadurch gekennzeichnet, daß sich die Rückstellfeder (10) an der von dem Nadelbund (11) abgewandten Seite an einem Einstellelement (22) abstützt und das Einstellelement (22) mit dem Nadelmitnehmer (19) verbunden ist. - Brennstoffeinspritzventil nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß der Bund des Nadelmitnehmers (19) durch einen Bodenabschnitt (37) des Nadelmitnehmers (19) gebildet ist. - Brennstoffeinspritzventil nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Ventilnadel (6) eine Masse zwischen 0,1 und 0,5 g hat.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19915210 | 1999-04-03 | ||
DE19915210A DE19915210A1 (de) | 1999-04-03 | 1999-04-03 | Brennstoffeinspritzventil |
PCT/DE2000/000495 WO2000060232A1 (de) | 1999-04-03 | 2000-02-22 | Brennstoffeinspritzventil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1084344A1 EP1084344A1 (de) | 2001-03-21 |
EP1084344B1 true EP1084344B1 (de) | 2004-10-13 |
Family
ID=7903473
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00909056A Expired - Lifetime EP1084344B1 (de) | 1999-04-03 | 2000-02-22 | Brennstoffeinspritzventil |
Country Status (5)
Country | Link |
---|---|
US (1) | US6575385B1 (de) |
EP (1) | EP1084344B1 (de) |
JP (1) | JP2002541375A (de) |
DE (2) | DE19915210A1 (de) |
WO (1) | WO2000060232A1 (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10034033A1 (de) * | 2000-07-13 | 2002-01-24 | Nass Magnet Gmbh | Magnetventil |
DE10063260B4 (de) * | 2000-12-19 | 2007-11-29 | Robert Bosch Gmbh | Brennstoffeinspritzventil mit einstellbarem Drall |
DE10203655A1 (de) * | 2002-01-30 | 2004-01-22 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE10307003B3 (de) * | 2003-02-19 | 2004-05-13 | Siemens Ag | Einspritzventil für die Einspritzung von Kraftstoff in eine Verbrennungskraftmaschine |
DE602004030419D1 (de) * | 2004-02-27 | 2011-01-20 | Continental Automotive Italy S P A | Flüssigkeitsinjektor |
DE102004028885A1 (de) * | 2004-06-15 | 2006-01-05 | Robert Bosch Gmbh | Kraftstoffeinspritzventil |
DE102004031790A1 (de) * | 2004-07-01 | 2006-01-26 | Robert Bosch Gmbh | Common-Rail-Injektor |
US20070007363A1 (en) * | 2005-07-04 | 2007-01-11 | Hitachi, Ltd. | Fuel injection valve |
WO2007122841A1 (ja) * | 2006-03-29 | 2007-11-01 | Keihin Corporation | 燃料噴射弁 |
FI121719B (fi) | 2009-05-28 | 2011-03-15 | Waertsilae Finland Oy | Polttoaineen ruiskutusventtiili |
JP5533173B2 (ja) * | 2010-04-13 | 2014-06-25 | いすゞ自動車株式会社 | 燃料供給装置 |
JP5585178B2 (ja) * | 2010-04-13 | 2014-09-10 | いすゞ自動車株式会社 | 流体制御装置 |
DE102010040898A1 (de) * | 2010-09-16 | 2012-03-22 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE102010063219B4 (de) | 2010-12-16 | 2018-05-24 | Robert Bosch Gmbh | Piezoelektrisches Aktormodul und Brennstoffeinspritzventil |
JP5910586B2 (ja) * | 2013-08-23 | 2016-04-27 | 株式会社デンソー | 燃料噴射弁 |
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 (de) * | 1995-09-16 | 1998-07-30 | Man Nutzfahrzeuge Ag | Einspritzventil für Brennkraftmaschinen |
DE19736684A1 (de) * | 1997-08-22 | 1999-02-25 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
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/de not_active Withdrawn
-
2000
- 2000-02-22 WO PCT/DE2000/000495 patent/WO2000060232A1/de active IP Right Grant
- 2000-02-22 US US09/701,773 patent/US6575385B1/en not_active Expired - Fee Related
- 2000-02-22 EP EP00909056A patent/EP1084344B1/de not_active Expired - Lifetime
- 2000-02-22 JP JP2000609701A patent/JP2002541375A/ja active Pending
- 2000-02-22 DE DE2000508208 patent/DE50008208D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JP2002541375A (ja) | 2002-12-03 |
DE50008208D1 (de) | 2004-11-18 |
EP1084344A1 (de) | 2001-03-21 |
DE19915210A1 (de) | 2000-10-05 |
WO2000060232A1 (de) | 2000-10-12 |
US6575385B1 (en) | 2003-06-10 |
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