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EP1805409B1 - Injecteur de carburant actionne par vanne magnetique, comprenant une butee hydraulique de depassement de course - Google Patents

Injecteur de carburant actionne par vanne magnetique, comprenant une butee hydraulique de depassement de course Download PDF

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Publication number
EP1805409B1
EP1805409B1 EP05801500A EP05801500A EP1805409B1 EP 1805409 B1 EP1805409 B1 EP 1805409B1 EP 05801500 A EP05801500 A EP 05801500A EP 05801500 A EP05801500 A EP 05801500A EP 1805409 B1 EP1805409 B1 EP 1805409B1
Authority
EP
European Patent Office
Prior art keywords
armature
solenoid valve
plate
valve according
bolt
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
Application number
EP05801500A
Other languages
German (de)
English (en)
Other versions
EP1805409A1 (fr
Inventor
Frieder Buerkle
Ralf Maier
Andreas Rettich
Heiko Seng
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1805409A1 publication Critical patent/EP1805409A1/fr
Application granted granted Critical
Publication of EP1805409B1 publication Critical patent/EP1805409B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • 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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
    • 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
    • F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
    • F02M2200/304—Fuel-injection apparatus having mechanical parts, the movement of which is damped using hydraulic 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
    • 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
    • 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
    • F02M2547/00—Special features for fuel-injection valves actuated by fluid pressure
    • F02M2547/003—Valve inserts containing control chamber and valve piston

Definitions

  • Solenoid valves can be used on fuel injection systems for actuating fuel injectors.
  • the solenoid valves comprise an electromagnet embedded in the injector body, which cooperates with an armature group comprising an anchor bolt and an armature plate.
  • the anchor bolt is configured such that a closing body is received thereon, which closes or releases an outflow of a control chamber actuating the nozzle needle of the fuel injector.
  • DE 196 50 865 A1 refers to a solenoid valve. Its anchor is designed in several parts.
  • the armature includes an armature disc and an anchor bolt which is guided in a slider.
  • a damping device is designed on the magnet armature. With such a device exactly the required short switching times of the solenoid valve are sustainable and also reproducible.
  • This solenoid valve is intended for use in injection systems, in particular high-pressure injection systems such as those with high-pressure accumulator (common rail).
  • a damping device with which a Nachschwingen the first anchor member is attenuated in its dynamic displacement, comprising a first anchor member which includes an axially facing approach, which is complementary to the neck, fixedly arranged recess of a slider in a displacement of the first anchor member can dive.
  • the recess with the approach includes a damping chamber, which has a leak gap connection with a surrounding relief space.
  • annular shoulder can be arranged on the anchor bolt, which is enclosed by a part of the first anchor member and on the first anchor member also an annular shoulder is mounted, between the and the annular shoulder of the anchor bolt constantly a damping space is included, in turn, via a leakage gap to a connection having a discharge space surrounding it.
  • a stop ring is inserted between the anchor bolt and the anchor plate.
  • the stop ring is designed as an open lock washer and tends to knock out. It can occur more severe signs of wear, which can lead to a self-adjusting game between anchor bolt and anchor plate and the other to complete destruction of the lock washer.
  • a self-adjusting game between anchor bolt and anchor plate affects the quantity tolerances in the injection adversely, so that in particular a reproducibility is no longer given at short intervals successive injections smallest amounts.
  • Out DE 101 33 450 A1 is a solenoid valve with a plug-in rotary connection known.
  • the solenoid valve is used on a fuel injector for injecting fuel into the combustion chamber of an internal combustion engine, wherein the fuel injector comprises an injector body and an electromagnet.
  • an armature assembly of the solenoid valve for depressurizing a control chamber is actuated, so that a present in the injector nozzle needle assembly performs an opening or a closing movement.
  • the anchor group includes a first and a second anchor part. The first anchor part and the second anchor part are joined together by a plug-in rotary connection, wherein one of the anchor parts is encompassed by an armature guide containing a rotation lock.
  • EP 0 851 114 A2 discloses a solenoid valve with a spring-loaded, slidably received on an anchor bolt anchor plate, wherein a nip under the anchor plate causes a hydraulic damping.
  • the armature stroke is set by adjusting rings which define the axial position of a corresponding anchor stop. About the armature or the movement of the armature in the axial direction, the opening of a nozzle of the fuel injector and thus the injected fuel quantity is set.
  • the components that determine the armature stroke, measured and based on the results of measurement is required for a given predetermined armature stroke Dimensioning of a setting ring calculated.
  • a magnet group is then screwed together with the adjustment ring dimensioned according to the calculation in the injector body and then the armature stroke is measured with a screwed or braced state.
  • the magnet group In order to then ensure the adjustment of the armature stroke within the narrow tolerance values, the magnet group must be completely disassembled and be reset by selecting a ring of a different dimensioning of the armature stroke. If necessary, this process must even be repeated several times until an acceptable tolerance compliance of the armature stroke is achieved.
  • over-stroke spring is replaced by a hydraulic cushion.
  • the components anchor bolt and anchor plate of a two-piece anchor assembly move together towards the valve seat.
  • the closure member which may be formed, for example, as a ceramic ball
  • the anchor plate and anchor bolt separate.
  • the anchor plate can swing through into an overstroke area. Due to the separation of anchor bolt and anchor plate during the closing process, the impulse force and thus the "closing bounce" is reduced.
  • the previously used overstroke spring pushes the armature plate before the next injection back to its original position. Now, if injections take place at short intervals before a previously used overstroke spring has returned the anchor plate to its original position, the quality of injection quantity and injection scattering deteriorates.
  • the outlet opening or the outlet openings open at several overflow channels, in the area between the top of the stationary mounted anchor bolt guide and below a neck portion of the anchor bolt movably received anchor plate.
  • the emerging from the outlet opening of the one or more transfer ports fuel builds between an upper end face of the stationarily mounted anchor bolt guide and the underside of a neck region of the anchor plate on a hydraulic cushion, which dampens the armature plate movably guided on the anchor bolt.
  • a chamfer is preferably formed on the neck region of the anchor plate on the side of the neck region facing the end face of the stationary anchor bolt guide.
  • the chamfer runs in the radial direction from outside to inside and is bounded by a chamfer edge.
  • a restoring force is exerted on the armature plate guided on the anchor bolt, which, however, does not always act permanently on the anchor plate. Only in the open state of the ball-shaped closing element and immediately after the closing of the closing element, that is its concerns on the valve seat, a restoring force is present, which thus reduces or dampens the impact of the anchor plate formed on a sickle disk stop.
  • FIG. 1 The representation according to FIG. 1 is to be taken from a known from the prior art solenoid valve whose armature plate is acted upon by an overstroke spring, which in turn is supported on a stationary, arranged in the injector anchor bolt guide.
  • solenoid valve 1 comprises a magnet 2, which is accommodated in the valve housing 4.
  • the magnet 2 encloses a closing spring 3, which acts on an upper end face of an anchor bolt 6.
  • a mechanical stop 5 is provided, which may be formed for example as a sickle disc and the upper stroke limit for the armature pin 6 movably received anchor plate 7 represents.
  • the anchor plate 7 in turn is acted upon by an overstroke spring 8, which is supported on an anchor bolt guide 10.
  • the anchor bolt guide 10 is fastened in the valve housing 4 via a valve clamping screw 9.
  • one or more holes 16 may be formed, which allow the overflow of fuel in the leakage region of the fuel injector.
  • the anchor bolt guide 10 is employed on a valve member 11.
  • the anchor bolt 6 with an armature plate 7, which is held movably thereon, comprises a spherical cap 12, in which, in the illustration according to FIG FIG. 1 Spherically shaped closing element 13 is inserted, which may be, for example, a ceramic ball.
  • the ceramic ball is placed by the anchor bolt 6 in a valve seat and thus closes an outlet throttle 14, via which a control chamber 15 of an in FIG. 1 Not shown fuel injector is pressure relieved.
  • FIG. 1 known from the prior art design of a solenoid valve, in particular at short injection intervals of ⁇ 800 microseconds between pilot injection and main injection, a significant increases in the absolute quantities and to observe a large increase in the scatters between two main injections when the anchor plate 7 impacts on the stop 5 made as a sickle disk.
  • FIG. 2 is a first embodiment of an inventively proposed Magnetankerein extract refer to a solenoid valve for actuating a fuel injector.
  • the FIG. 2 removable solenoid valve 1 comprises the magnetic coil 2, which is arranged opposite the top of the anchor plate 7.
  • the armature plate 7 is movably received on the anchor bolt 6 via a stop 5 designed as a sickle disk, whose axis of symmetry is identified by reference numeral 22.
  • the anchor bolt 6 is acted upon by the closing spring 3.
  • the valve housing 4 serves to receive a valve clamping screw 9 provided with an external thread, via which the bolt guide 10 is fastened in the valve housing 4.
  • the bolt guide 10 rests on an upper plane surface of the valve piece 11, in which the discharge throttle space 34 is formed, which has on its side facing the discharge throttle 14 a funnel 33 in which a valve seat 32 is formed.
  • the valve seat 32 is shown in the illustration FIG. 2 closed by a spherical closure member 13 which may be formed, for example, as a ceramic ball.
  • the closing element 13 is guided in a spherical cap 12 at the lower end of the anchor bolt 6.
  • Below the valve seat 32 is located in the valve piece 11, the outlet throttle 14, via which the control chamber 15 is pressure relieved when the closing element 13 is open. In this case flows via the outlet throttle 14 of the valve housing 4, a Abberichtvolumen of fuel from the control chamber 15 in the drain throttle chamber 34 a.
  • the anchor bolt 6 has at least one overflow channel 26.
  • the at least one overflow channel 26 is acted upon by an inlet opening 27, which is executed in the lower portion of the anchor bolt 6, with fuel.
  • the fuel flows with the closing element 13 open via the outlet throttle 14 from the control chamber 15 into the outlet throttle space 34 and from there via the inlet openings 27 into the at least one overflow channel 26.
  • the or the overflow channels 26 each have an outflow opening 24.
  • the overflow channels 26 can however also be formed in the anchor bolt 6 in such a way that all overflow channels 26 open into a common outflow opening 24.
  • the outflow opening 24 is in relation to the anchor bolt 6 so that it opens in the region between the end face 23 of the stationary anchor bolt guide 10 and below the anchor plate holder 20. This flows out of the overflow 26 exiting Fuel at a point in the Abêtraum 35, in which advantageously a hydraulic pressure pad can be constructed.
  • the armature plate neck 20 has a chamfer 21 on its end facing the end face 23 of the stationary anchor bolt guide 10.
  • the chamfer 21 extends in a cone angle from outside to inside towards the lateral surface of the anchor bolt 6.
  • the chamfer 21 is delimited by a chamfer edge 25, so that a space formed in accordance with the angle of inclination of the conical surface forms, which can be filled with the fuel volume leaving the outflow openings 24 of the overflow channels 26. Due to the formation of the chamfer 21, premature discharge of fuel from the damping pad is avoided.
  • the number of overflow channels 26 on the anchor bolt 6 can be arbitrary, but is limited by the fact that the overflow 26 should not represent hydraulic throttles and therefore should be sufficiently large in terms of their diameter.
  • the number of overflow channels 26 that can be formed on the anchor bolt 6 depends on the diameter of the anchor bolt 6 and on the production possibilities.
  • Each of the transfer ports 26 has its own discharge port 24 so as not only to utilize the static cushion formed in the hydraulic space surrounding the anchor bolt 6, but also to utilize an additional dynamic upstream force.
  • a symmetrical arrangement of the overflow 26 at the periphery of the anchor bolt 6 is advantageous to minimize lateral forces in the guides between anchor bolt 6 and armature guide 10 and anchor bolt 6 and anchor plate 7.
  • the hydraulic cushion above the end face 23 of the stationary anchor bolt guide 10 and below the chamfer 21 on the neck portion 20 of the anchor plate 7 is not permanently on, but is effective only in the open state of the closing element 13 and immediately after closing the closing element 13, that is, after this has reached the valve seat 32.
  • a bouncing of the upper plane of the anchor plate 7 can be significantly attenuated to the underside of the serving as a stopper sickdle 5.
  • Reference number 30 shows the return flow quantities flowing from the outlet throttle control space 34 into the further hydraulic space 35, while reference number 31 designates the fuel volume leaving the discharge opening or openings 24, which serves to dampen the movement of the armature plate 7.
  • the anchor plate 7 can be quickly returned by the emerging from the or the discharge ports 24 fuel back to its original position, wherein the striking of the upper plane of the anchor plate 7 on the executed as a sickle disc stop. 5 with a relatively small pulse.
  • the flow of the Abêtmenge within the discharge throttle chamber 34 is present shortly after the closing of the valve seat 32 by the closing element 13.
  • the relatively small leakage quantities of nozzles and valve guide are permanently available.
  • the anchor plate 7 Due to the fuel flowing through the flow process of the Abgresmenge in the discharge throttle space 34 in the transfer ports 26 and the leakage of fuel through the discharge port 24 between the end face 23 and bevel 21 can quickly return the armature plate 7 in its initial position. Due to the small self-adjusting leakage amount, indicated by the arrow 31, the anchor plate 7 can impinge on the designed as a sickle disk stop 5 and held there with only a small pulse. With reference numeral 31, the second return amount is referred to, which flows from the annular channel above the anchor bolt guide 10.
  • the return movement of the armature plate 7 to the stop 5 takes place with progressive stroke and decreasing axial force in the direction of the starting position, so that a wear-causing impact of anchor plate 7 and stopper 5, which can be formed as a sickle disc, can be achieved.
  • the amount of fuel exiting from the outflow openings 24 is so dimensioned that the armature plate 7 is returned to its initial position, ie in contact with the stop 5, until the next injection process.
  • different opening behavior leads to increased stroke / stroke spread of the injection quantities, which is highly undesirable.
  • the representation according to FIG. 3 are the Hubverrise an anchor plate removed, which is damped with a spring or as proposed by the invention with a hydraulic stop.
  • the curve identified by reference numeral 40 denotes the slope of a curve which describes the return speed of the armature plate 7 to its starting position.
  • the curve increases with the first slope 40 to a turning point 45, at which the curve assumes a second slope 42, which is caused due to leakage flows 31.
  • Reference numeral 43 designates a speed which has an armature plate 7 when it is reset by an overstroke spring (compare overstroke spring 8 in the illustration according to FIG. 1 ). Due to the spring force that builds up only slowly, the return movement of an armature plate 7 acted upon by the overstroke spring 8 takes place substantially more slowly.
  • a self-adjusting overswing is characterized, as seen over the time axis, asymptotically decaying.
  • the anchor plate must pass through 7, after a closing operation of the anchor bolt 6, that is placed in the valve seat 32 closing element 13, to reach their original position again, characterized by an investment in the form of a sickle disk stop 5 is.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (10)

  1. Electrovanne pour actionner un injecteur de carburant comportant un élément d'obturation (13) qui libère ou ferme une chambre de commande (15) par un organe d'étranglement de sortie (14), un goujon d'induit (6) muni d'une plaque d'induit (7), montée mobile sur celui-ci, et fixée au goujon d'induit (6) ainsi qu'un aimant (2) en regard de la plaque d'induit (7),
    caractérisée en ce que
    le goujon d'induit (6) comporte au moins un canal de débordement (26) reliant hydrauliquement une chambre d'étranglement de sortie (34) et une chambre de fin de commande (5) pour constituer un coussin hydraulique sous la plaque d'induit (7).
  2. Electrovanne selon la revendication 1,
    caractérisée par
    au moins un orifice de sortie (24) d'au moins un canal de débordement (26) entre une surface frontale (23) et un guidage de goujon d'induit (10) et débouchant sous le col de la plaque d'induit (20) dans la chambre de fin de commande (35).
  3. Electrovanne selon la revendication 2,
    caractérisée en ce que
    le col (20) de la plaque d'induit présente un congé (21).
  4. Electrovanne selon la revendication 3,
    caractérisée en ce que
    le congé (21) a un angle de cône allant radialement de l'extérieur vers l'intérieur.
  5. Electrovanne selon la revendication 3,
    caractérisée en ce que
    le congé (21) est délimité vers l'extérieur par un bord de congé (25).
  6. Electrovanne selon la revendication 1,
    caractérisée en ce qu'
    au moins un orifice d'entrée (27) d'au moins un canal de débordement (26) est sollicité par le carburant de la chambre d'étranglement de sortie (34).
  7. Electrovanne selon la revendication 1,
    caractérisée en ce que
    les canaux de débordement (26) sont inclinés dans le goujon d'induit (6) d'un angle d'inclinaison (28) par rapport à l'axe de symétrie (22) du goujon d'induit (6).
  8. Electrovanne selon la revendication 1,
    caractérisée en ce que
    l'organe d'obturation (13) est une bille en céramique guidée dans une calotte sphérique (12) du goujon d'induit (6).
  9. Electrovanne selon la revendication 1,
    caractérisée en ce qu'
    elle comporte un induit en deux parties, une plaque d'induit (7) et un goujon d'induit (6) et la plaque d'induit (7) est mobile par rapport au goujon d'induit (6),
    la plaque d'induit (7) est rappelée hydrauliquement contre une butée (5) sans dépassement de course.
  10. Application d'une électrovanne selon une ou plusieurs des revendications précédentes à un injecteur de carburant d'un système d'injection à haute pression à rampe commune.
EP05801500A 2004-10-20 2005-10-07 Injecteur de carburant actionne par vanne magnetique, comprenant une butee hydraulique de depassement de course Expired - Lifetime EP1805409B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004050992A DE102004050992A1 (de) 2004-10-20 2004-10-20 Magnetventilbetätigter Kraftstoffinjektor mit hydraulischem Überhubanschlag
PCT/EP2005/055108 WO2006042798A1 (fr) 2004-10-20 2005-10-07 Injecteur de carburant actionne par vanne magnetique, comprenant une butee hydraulique de depassement de course

Publications (2)

Publication Number Publication Date
EP1805409A1 EP1805409A1 (fr) 2007-07-11
EP1805409B1 true EP1805409B1 (fr) 2008-02-27

Family

ID=35502958

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05801500A Expired - Lifetime EP1805409B1 (fr) 2004-10-20 2005-10-07 Injecteur de carburant actionne par vanne magnetique, comprenant une butee hydraulique de depassement de course

Country Status (5)

Country Link
EP (1) EP1805409B1 (fr)
JP (1) JP4495761B2 (fr)
AT (1) ATE387577T1 (fr)
DE (2) DE102004050992A1 (fr)
WO (1) WO2006042798A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7303014B2 (en) 2004-10-26 2007-12-04 Halliburton Energy Services, Inc. Casing strings and methods of using such strings in subterranean cementing operations
US7303008B2 (en) 2004-10-26 2007-12-04 Halliburton Energy Services, Inc. Methods and systems for reverse-circulation cementing in subterranean formations
DE102006045357A1 (de) * 2006-09-26 2008-04-03 Robert Bosch Gmbh Sicherungsscheibe für ein Magnetventil
DE102007037824A1 (de) * 2007-08-10 2009-02-12 Robert Bosch Gmbh Kraftstoffeinspritzventil für Brennkraftmaschinen
DE102008002717A1 (de) * 2008-06-27 2010-01-14 Robert Bosch Gmbh Kraftstoffinjektor mit zweiteiligem Magnetanker
EP2138706B1 (fr) 2008-06-27 2010-11-10 C.R.F. Società Consortile per Azioni Injecteur de carburant doté d'une servosoupape de dosage de type équilibré pour moteur à combustion interne
DE602008005349D1 (de) * 2008-12-29 2011-04-14 Fiat Ricerche Brennstoffeinspritzsystem mit hoher Betriebswiederholbarkeit und -stabilität für einen Verbrennungsmotor
CN104100424B (zh) * 2014-07-23 2016-06-29 哈尔滨工程大学 带有电磁阀控制的船用低速机共轨喷油器
CN110397771B (zh) * 2019-07-20 2020-12-01 防城港澳加粮油工业有限公司 一种使用寿命高的弹簧式安全阀

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3408012A1 (de) * 1984-03-05 1985-09-05 Gerhard Dipl.-Ing. Warren Mich. Mesenich Elektromagnetisches einspritzventil
IT1219397B (it) * 1988-06-23 1990-05-11 Weber Srl Valvola per la dosatura e la polverizzazione di carburante ad azionamento elettromagnetico provvista di doppia serie di fori laterali di ingresso del carburante
DE19650865A1 (de) 1996-12-07 1998-06-10 Bosch Gmbh Robert Magnetventil
IT239878Y1 (it) * 1996-12-23 2001-03-13 Elasis Sistema Ricerca Fiat Perfezionamenti ad una valvola di dosaggio a comando elettromagneticoper un iniettore di combustibile.
DE19843546A1 (de) * 1998-09-23 2000-03-30 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen
DE10133450A1 (de) 2001-07-10 2003-01-30 Bosch Gmbh Robert Magnetventil mit Steck-Drehverbindung

Also Published As

Publication number Publication date
JP4495761B2 (ja) 2010-07-07
DE502005003034D1 (de) 2008-04-10
WO2006042798A1 (fr) 2006-04-27
ATE387577T1 (de) 2008-03-15
EP1805409A1 (fr) 2007-07-11
JP2008517212A (ja) 2008-05-22
DE102004050992A1 (de) 2006-04-27

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