EP0436586B1 - Buse d'injection de carburant a jet de carburant reglable - Google Patents

Buse d'injection de carburant a jet de carburant reglable Download PDF

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Publication number
EP0436586B1
EP0436586B1 EP89910599A EP89910599A EP0436586B1 EP 0436586 B1 EP0436586 B1 EP 0436586B1 EP 89910599 A EP89910599 A EP 89910599A EP 89910599 A EP89910599 A EP 89910599A EP 0436586 B1 EP0436586 B1 EP 0436586B1
Authority
EP
European Patent Office
Prior art keywords
injection nozzle
stroke movement
nozzle
injection
alternating
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
EP89910599A
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German (de)
English (en)
Other versions
EP0436586A1 (fr
Inventor
Dietmar Hohm
Peter Kleinschmidt
Hans Meixner
Dieter Stein
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.)
Siemens AG
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Siemens AG
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Filing date
Publication date
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Publication of EP0436586A1 publication Critical patent/EP0436586A1/fr
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Publication of EP0436586B1 publication Critical patent/EP0436586B1/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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/12—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship providing a continuous cyclic delivery with variable 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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/10—Other injectors with multiple-part delivery, e.g. with vibrating valves
    • 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
    • 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
    • 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
    • F02M51/0696—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by the use of movable windings
    • 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
    • F02M51/08—Injectors peculiar thereto with means directly operating the valve needle specially for low-pressure fuel-injection
    • 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/04—Injectors peculiar thereto
    • F02M69/041—Injectors peculiar thereto having vibrating means for atomizing the fuel, e.g. with sonic or ultrasonic vibrations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder

Definitions

  • the present invention relates to a fuel injector as specified in the preamble of claim 1.
  • the injection nozzle generates a fuel jet shaped according to the design, the liquid components of which are atomized by the ultrasound-frequency-vibrating part of the entire nozzle into a flowing droplet mist consisting of fine aerosol droplets.
  • the same is apparent from JP-A-60 22 066 for the person skilled in the art.
  • the present invention is concerned with a development going in another direction, namely measures for make an appropriate choice of the shape of the fuel jet.
  • All known fuel injection nozzles have a characteristic shape of the fuel jet which is predetermined by their construction.
  • the shape of the fuel jet is known to be important for the air-fuel mixture formation, and not only in the With regard to minimal specific fuel consumption, but also with regard to environmental pollution due to undesirable emissions, and important for the smooth running of the engine.
  • a distinction is made between a fuel injection nozzle that generates a thread jet and a nozzle that delivers a cone jet. Both jet shapes are characteristic of one another, moreover, different size distributions of the droplets of the fuel sprayed out of the nozzle.
  • jet shapes are optimal.
  • the object of the present invention is to provide measures with which, in addition, at least largely optimal mixture formation can also be achieved with the selected injection nozzle for different operating states of the internal combustion engine.
  • the present invention is based on the idea of providing technical means on or for a fuel injection nozzle, with which the characteristic shape of the fuel jet of this one nozzle can be changed in an electrically controllable manner during operation.
  • the shape of the jet of the nozzle is controlled according to the invention in such a way that different opening angles of the injection jet, from the (slim) thread jet to a cone jet with e.g. 70 ° opening angle or even larger can be reached.
  • the spray shape can be controlled and optimally adjusted during operation.
  • the invention relates in particular to low-pressure injection at approximately 1 to 10 bar.
  • fuel injectors are also injectors.
  • the valve drive can be based on the effect of the liquid pressure exerted by the fuel to be injected.
  • injection nozzles are increasingly being provided with electromechanical devices for opening and closing their valve portion. Electromagnetic versions have mainly been provided for this purpose.
  • fuel injectors with a valve device with a piezoelectric drive.
  • the one fuel injection nozzle per cylinder is designed in such a way that it can bring about several mutually different, controllably selectable forms of "jet formation".
  • a "thread jet” can be generated with a fuel injection nozzle according to the invention, namely for continuous operation, the cross section of the impact on the valve being limited to a predeterminable proportion of the valve disk surface. This ensures that the fuel reaches the valve as “lossless” as possible and then immediately and without detour into the cylinder. The measured optimal air-fuel ratio can thus be maintained with certainty.
  • the evaporation of the fuel on the hot valve plate ensures that a finely divided fuel-air mixture is available for combustion in the cylinder.
  • the injection nozzle according to the invention is controlled so that a good fuel fine distribution occurs.
  • an injection “jet” is generated for this operating phase of the engine, which has a certain spreading in the manner of a cone jet.
  • a cone jet has the property that, and only at a certain distance from its nozzle opening, the liquid only disintegrates in the jet and that only then, but sufficiently early for the combustion process, is there a substantial proportion of the injection quantity in fine droplet distribution.
  • the above-mentioned distance is important here, because it can be achieved that this fuel fine distribution in the cone jet is present just before or even at the inlet valve and that droplets fail, e.g. on the wall of the intake pipe (i.e. in the area between the nozzle opening and the inlet valve) is excluded.
  • This advantage occurs particularly in such known injection nozzles that have an integrated ultrasonic liquid atomization. It must be taken into account that the fuel injector cannot be arranged anywhere near the inlet valve.
  • An injection nozzle according to the invention is designed so that it has a fast responding and fast working drive for opening and closing the nozzle opening. It can be advantageous in individual cases, in particular for optimally fulfilling the conditions in idle mode, if the injection nozzle according to the invention is one with proportional drive or proportional adjustability of the nozzle opening. It is thus easy to set such intermediate values of the degree of opening of the injection nozzle, with which an exact metering of the very small injection quantities that come into consideration, especially in idle mode, can be maintained per injection process.
  • the operational repetition frequency is in practical use, e.g. for a four-cylinder or six-cylinder engine and thus the repetition frequency for opening (t1) and closing (t2) the valve portion of the injector at about 5 Hz to 50 Hz.
  • the repetition frequency for opening (t1) and closing (t2) the valve portion of the injector at about 5 Hz to 50 Hz.
  • Correspondingly steep rising and falling edges of opening and closing of an injection nozzle according to the invention are at a frequency of considerably above 1 kHz (with a corresponding period T) as the upper limit of the Fourier spectrum of the opening and closing impulse.
  • the requirements for an injection nozzle according to the invention are given on the basis of the following exemplary operating values for a medium-sized passenger car:
  • the fuel throughput when the injector is continuously open (in the intake phase) is approx. 6 g / s per cylinder. This corresponds to almost full load operation.
  • the idle flow rate of such an engine is about 0.4 mg / s per cylinder. This clearly results in a dynamic range of four orders of magnitude to be managed.
  • an injection nozzle according to the invention are characterized in that the opening and closing of the injection nozzle (which is also designed as a valve) Serving valve needle and / or the opening cross section of the nozzle are to be set in lifting movements.
  • the beam cross section ie the beam shape, for example from the thread jet to the cone jet, can be varied with different opening angles.
  • FIG. 1 which shows a time / excitation or. Opening diagram of an injection nozzle according to the invention shows.
  • the injection nozzle according to the invention is able to periodically follow the mechanical movements of the electrical excitation with its stroke movements due to the above-mentioned rapid response of its parts, in particular with proportional drive.
  • the excitation frequencies for this stroke movement are optimally in the range from 5 KHz to 20 KHz, that is to say far below ultrasonic atomizing frequencies. This dimensioning applies both to injection nozzles and valves in low-pressure systems (approx. 3 bar) and to those with the usual diameter (0.3 to 1 mm) of the nozzle.
  • Figure 2 shows a basic structure of an injection nozzle 10 according to the invention with a superimposed, rapidly changing stroke movement of the nozzle needle.
  • FIG. 3 shows a corresponding embodiment with a lifting movement of the (valve) seat of the injection nozzle 20.
  • Figures 4 and 5 show in side and front view an embodiment 40 with a device for modulating the effective injection opening.
  • Figure 6 shows a piezoceramic drive device.
  • FIG. 7 shows a magnetostrictive drive device
  • FIG. 8 shows an electrodynamic drive device for an injection nozzle according to the invention.
  • FIG. 9 shows a complete configuration of an injection nozzle according to the invention.
  • 11 denotes the nozzle needle, which also acts as a valve needle. It is located in the nozzle part 12 which has the bore shown as the nozzle opening 13. If the injection nozzle is closed, the front end of the nozzle needle 11 closes the nozzle opening 13. 14 indicates the controllable mobility of the nozzle needle 11.
  • fuel indicated at 15 flows along the nozzle needle 11 and within the nozzle part 12 to the nozzle opening 13 in order to form an injection jet with the conical shape having the characteristic 15 shown.
  • This jet shape 15 results from the fact that the nozzle needle 11 in the open position is superimposed on the additional alternating stroke movement indicated by 14.
  • FIG. 3 reference can largely be made to the details described for FIG. 2. Reference symbols already described for FIG. 2 have the same or at least meaningful meaning in FIG. 3.
  • alternating stroke movement is provided for the nozzle part 12 with the nozzle opening 13.
  • there is a beam shape which essentially corresponds to that of the embodiment according to FIG. 2.
  • FIGS. 4 and 5 show an additional device attached to the nozzle part 12 in the region of the nozzle opening 13.
  • FIG. 5 shows an end view belonging to FIG. 4, ie a view against the sprayed jet.
  • This additional device 51 of the actual injection nozzle of FIGS. 4 and 5 consist of, for example, four rod-shaped extensions 151, each of which are to be excited to perform lifting movements. These lifting movements are indicated by the individual arrows 54.
  • These stroke movements 54 are bending movements of the parts 151.
  • These parts 151 form longitudinal guides for the fuel jet 45 emerging from the nozzle opening 13.
  • the alternating stroke movements 54 which are transverse to its jet direction, lead to a jet shape as shown at 55.
  • the drive element 6 according to FIG. 6 consists of a stack of piezoelectrically excitable disks 61. These disks are provided with flat electrodes, not shown. Such stacks are known in principle and are also supplied with controlled electrical voltage in the present case. In particular, AC voltage is supplied, preferably with such a frequency that leads to resonant oscillatory movements of the lifting movement 114 of the stack or of the drive 6.
  • FIG. 7 shows a magnetostrictive embodiment 7 of a drive.
  • 71 denotes a rod which can be excited to magnetostriction movements and which is located inside a magnetic field coil 72.
  • This magnetic field coil 72 is supplied with electrical voltage, preferably again at a frequency which leads to resonance with a natural oscillation of the rod 71, which leads to a correspondingly large stroke amplitude of the stroke movement 114.
  • FIG. 8 shows a drive 8 with plunger coil 81 and pot magnet 82, as is known in principle from loudspeakers. With a corresponding electrical alternating excitation, such a device leads to mechanical stroke movements 114. Resonance excitation can also be effected here.
  • FIG. 9 shows an example of an injection nozzle according to the invention.
  • the details given for the figures described above have the same meaning in FIG. 9.
  • the actuator 91 denotes an actuator, for example a stack consisting of piezoelectric plates. By applying electrical voltage between the connections 92 and 93, this actuator changes its length and thus drives the plunger 94 and the nozzle needle 11 connected to the plunger 94.
  • the actuator 91 is used to open and close the valve by moving the valve needle 11.
  • the inflow opening of the injection nozzle for the fuel is designated by 95.
  • the drive device for the alternating lifting movement to be carried out according to the invention is designated by 96.
  • this drive device comprises a plurality of stacks 97 with the electrical connecting lines 98 and 99. Between the connections 98 and 99, the AC drive voltage for this lifting movement is to be applied.
  • the outer housing 12 of the injection nozzle (sealed) is divided, this nozzle part 12 guides through the work of the drive 96 perform the alternating stroke movements according to the invention, specifically compared to the nozzle needle which is stationary in this example in the open state. This corresponds to the embodiment variant of the invention already described above in connection with FIG. 3.

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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)
  • Electromagnetism (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

Buse d'injection comportant un orifice (13) et un pointeau (11), ainsi qu'un entraînement (91) à paramètres d'entrée électriques et un dispositif d'entraînement (96) faisant faire à la partie buse (12) un mouvement de va-et-vient, prioritaire par rapport à l'état ouvert de la buse d'injection. On peut commander le dispositif d'entraînement (96) en faisant varier des paramètres d'entrée électriques et sa structure est telle que la durée de période disponible pour les alternances du mouvement de la buse est au moins assez brève pour représenter une fraction du temps d'ouverture minimum de la buse d'injection.

Claims (11)

  1. Gicleur d'injection de carburant pour des moteurs à combustion interne, notamment pour l'injection sous basse pression, comprenant
    - un orifice de gicleur (13) disposé dans une partie d'un gicleur (12),
    - un pointeau de gicleur (11),
    - un dispositif d'entraînement (91) à grandeur d'entrée (92, 93) électrique, au moyen duquel le pointeau de gicleur (11) peut être amené dans une position de fermeture, dans laquelle il ferme l'orifice du gicleur (13) et dans une position d'ouverture dans laquelle il dégage l'orifice du gicleur (13), et
    - des moyens (96) par lesquels peut être transmis à au moins une partie (11,12,51) du gicleur d'injection, qui se trouve dans la région de constitution (15,25,55) du jet d'injection, un mouvement alterné de levée pendant que le pointeau du gicleur (11) est en position d'ouverture, ces moyens (96) pouvant être excités par une grandeur électrique et étant agencés de manière que la période (T) du mouvement alterné de levée soit plusieurs fois plus petite que la durée minimum d'ouverture (taus-tein) prescrite du gicleur d'injection,
    caractérisé
    - en ce que les moyens (96) d'excitation du mouvement alterné de levée de ladite au moins une partie (11,12,55) du gicleur d'injection transmettent des mouvements de levée d'une période (T) correspondant à une fréquence d'excitation comprise entre 5 KHz et 20 KHz et
    - en ce que l'angle d'ouverture du jet d'injection du gicleur d'injection peut être modifiée en commandant la grandeur électrique d'entrée des moyens (96) pour le mouvement alterné de levée.
  2. Gicleur d'injection suivant la revendication 1,
    caractérisé en ce que
    la tension alternée (U) pour l'excitation du mouvement alterné de levée (14,24) peut être appliquée supplémentairement à la tension électrique (Uein/aus) de manoeuvre à appliquer pour l'ouverture du gicleur.
  3. Gicleur d'injection suivant la revendication 1 ou 2,
    caractérisé en ce que
    les moyens pour effectuer le mouvement alterné de levée (114, 24,54) forme un système de résonance.
  4. Gicleur suivant l'une des revendications 1 à 3,
    caractérisé en ce que
    les moyens pour exciter le mouvement de levée alternée (114,14,24,54) sont constitués de façon que le pointeau du gicleur (11) effectue ces mouvements alternés de levée (14,24,54,114). (Figure 2)
  5. Gicleur suivant l'une des revendications 1 à 3,
    caractérisé en ce que
    les moyens d'excitation du mouvement alterné de levée (114,14,24,54) sont constitués de manière qu'une partie de l'orifice du gicleur (12,13) effectue ce mouvement alterné de levée. (Figure 3)
  6. Gicleur suivant l'une des revendications 1 à 5,
    caractérisé en ce que
    il est prévu un mouvement alterné de levée (14,24) longitudinal.
  7. Gicleur suivant l'une des revendications 1 à 5,
    caractérisé en ce que
    il est prévu un mouvement alterné de levée (54) transversal.
  8. Gicleur suivant l'une des revendications 1 à 7,
    caractérisé en ce que
    les moyens d'excitation du mouvement alterné de levée comprennent un dispositif d'excitation (6) piézoélectrique.
  9. Gicleur suivant l'une des revendications 1 à 7,
    caractérisé en ce que
    les moyens d'excitation du mouvement alterné de levée comprennent un dispositif (89) électrodynamique à champ magnétique homogène.
  10. Gicleur suivant l'une des revendications 1 à 7,
    caractérisé en ce que
    les moyens d'excitation du mouvement alterné de levée comprennent un dispositif (7) magnétostrictif.
  11. Gicleur suivant l'une des revendications 1 à 7, caractérisé en ce que les moyens d'excitation du mouvement alterné de levée comprennent un dispositif (7,8) électromagnétique.
EP89910599A 1988-09-29 1989-09-28 Buse d'injection de carburant a jet de carburant reglable Expired - Lifetime EP0436586B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3833093 1988-09-29
DE3833093A DE3833093A1 (de) 1988-09-29 1988-09-29 Fuer verbrennungskraftmaschine vorgesehene kraftstoff-einspritzduese mit steuerbarer charakteristik des kraftstoffstrahls

Publications (2)

Publication Number Publication Date
EP0436586A1 EP0436586A1 (fr) 1991-07-17
EP0436586B1 true EP0436586B1 (fr) 1992-12-02

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ID=6363986

Family Applications (2)

Application Number Title Priority Date Filing Date
EP89910599A Expired - Lifetime EP0436586B1 (fr) 1988-09-29 1989-09-28 Buse d'injection de carburant a jet de carburant reglable
EP89117969A Expired - Lifetime EP0361480B1 (fr) 1988-09-29 1989-09-28 Buse d'injection de combustible à commande de caractéristique du jet de combustible pour moteur à combustion interne

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP89117969A Expired - Lifetime EP0361480B1 (fr) 1988-09-29 1989-09-28 Buse d'injection de combustible à commande de caractéristique du jet de combustible pour moteur à combustion interne

Country Status (6)

Country Link
US (1) US5199641A (fr)
EP (2) EP0436586B1 (fr)
JP (1) JPH04501153A (fr)
DE (2) DE3833093A1 (fr)
ES (2) ES2031331T3 (fr)
WO (1) WO1990003512A1 (fr)

Families Citing this family (66)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5248087A (en) * 1992-05-08 1993-09-28 Dressler John L Liquid droplet generator
DE4340016A1 (de) * 1993-11-24 1995-06-01 Bosch Gmbh Robert Elektromagnetisch betätigbares Kraftstoffeinspritzventil
DE4409848A1 (de) * 1994-03-22 1995-10-19 Siemens Ag Vorrichtung zur Zumessung und Zerstäubung von Fluiden
AU681144B2 (en) * 1994-04-01 1997-08-21 City Of Hope Micro-volume fluid injector
JPH0893601A (ja) * 1994-09-22 1996-04-09 Zexel Corp 燃料噴射ノズル
FR2726603B1 (fr) * 1994-11-09 1996-12-13 Snecma Dispositif de controle actif des instabilites de combustion et de decokefaction d'un injecteur de carburant
US5836521A (en) * 1995-03-09 1998-11-17 Dysekompagniet I/S Valve device with impact member and solenoid for atomizing a liquid
US5788154A (en) * 1996-05-02 1998-08-04 Caterpillar Inc. Method of preventing cavitation in a fuel injector having a solenoid actuated control valve
JP3823391B2 (ja) * 1996-08-31 2006-09-20 いすゞ自動車株式会社 エンジンの燃料噴射装置
SE507519C2 (sv) * 1996-10-16 1998-06-15 Mydata Automation Ab Anordning för att anbringa ett visköst medium på ett underlag
US5855323A (en) * 1996-11-13 1999-01-05 Sandia Corporation Method and apparatus for jetting, manufacturing and attaching uniform solder balls
JP3404241B2 (ja) * 1997-02-05 2003-05-06 明治製菓株式会社 油性菓子原料自動スプレー装置
US7320457B2 (en) * 1997-02-07 2008-01-22 Sri International Electroactive polymer devices for controlling fluid flow
FR2762648B1 (fr) * 1997-04-25 1999-06-04 Renault Dispositif d'injection de carburant pour moteur a combustion interne
DE19802302A1 (de) 1998-01-22 1999-07-29 Bosch Gmbh Robert Piezoelektrischer Aktor
DE19921489A1 (de) * 1999-05-08 2000-11-09 Bosch Gmbh Robert Brennstoffeinspritzventil
US7537197B2 (en) * 1999-07-20 2009-05-26 Sri International Electroactive polymer devices for controlling fluid flow
DE19936945A1 (de) * 1999-08-05 2001-02-08 Bosch Gmbh Robert Verfahren zum Zumessen von Brennstoff- und Brennstoffeinspritzanlage
DE19946841A1 (de) * 1999-09-30 2001-05-03 Bosch Gmbh Robert Ventil zum Steuern von Flüssigkeiten
US6836056B2 (en) 2000-02-04 2004-12-28 Viking Technologies, L.C. Linear motor having piezo actuators
WO2001067431A1 (fr) 2000-03-07 2001-09-13 Viking Technologies, Inc. Procede et systeme d'accord automatique d'un instrument a cordes
US6717332B2 (en) 2000-04-18 2004-04-06 Viking Technologies, L.C. Apparatus having a support structure and actuator
US6548938B2 (en) * 2000-04-18 2003-04-15 Viking Technologies, L.C. Apparatus having a pair of opposing surfaces driven by a piezoelectric actuator
US6363913B1 (en) * 2000-06-09 2002-04-02 Caterpillar Inc. Solid state lift for micrometering in a fuel injector
US6759790B1 (en) 2001-01-29 2004-07-06 Viking Technologies, L.C. Apparatus for moving folded-back arms having a pair of opposing surfaces in response to an electrical activation
US6879087B2 (en) * 2002-02-06 2005-04-12 Viking Technologies, L.C. Apparatus for moving a pair of opposing surfaces in response to an electrical activation
DE10145580A1 (de) 2001-09-15 2003-04-17 Bosch Gmbh Robert Verfahren zum Vermeiden einer Spritzlochinnenverkokung von Spritzlöchern eines Mehrloch-Einspritzventils
DE10153708B4 (de) * 2001-10-31 2004-01-29 Microdrop Gesellschaft für Mikrodosiersysteme mbH Mikrodosiervorrichtung
US6792921B2 (en) * 2001-12-17 2004-09-21 Caterpillar Inc Electronically-controlled fuel injector
AU2003243697A1 (en) * 2002-06-21 2004-01-06 Viking Technologies, L.C. Uni-body piezoelectric motor
DE10248106A1 (de) * 2002-10-15 2004-05-19 Bühler AG Vibrodüsen-Anordnung
US6811093B2 (en) * 2002-10-17 2004-11-02 Tecumseh Products Company Piezoelectric actuated fuel injectors
JP4500900B2 (ja) * 2002-10-24 2010-07-14 小川 秀和 整復装置および衣類
US6991612B2 (en) * 2003-02-03 2006-01-31 The Seaberg Company, Inc. Orthopedic splints
FR2888889B1 (fr) * 2005-07-20 2007-08-31 Renault Sas Dispositif d'injection de carburant pour moteur a combustion interne
WO2007039677A1 (fr) * 2005-10-03 2007-04-12 Renault S.A.S. Dispositif de mise en vibration cyclique d'une buse injecteur
US7424883B2 (en) 2006-01-23 2008-09-16 Kimberly-Clark Worldwide, Inc. Ultrasonic fuel injector
US8191732B2 (en) 2006-01-23 2012-06-05 Kimberly-Clark Worldwide, Inc. Ultrasonic waveguide pump and method of pumping liquid
US8028930B2 (en) 2006-01-23 2011-10-04 Kimberly-Clark Worldwide, Inc. Ultrasonic fuel injector
US7810743B2 (en) 2006-01-23 2010-10-12 Kimberly-Clark Worldwide, Inc. Ultrasonic liquid delivery device
US7819335B2 (en) 2006-01-23 2010-10-26 Kimberly-Clark Worldwide, Inc. Control system and method for operating an ultrasonic liquid delivery device
US7744015B2 (en) 2006-01-23 2010-06-29 Kimberly-Clark Worldwide, Inc. Ultrasonic fuel injector
US7963458B2 (en) 2006-01-23 2011-06-21 Kimberly-Clark Worldwide, Inc. Ultrasonic liquid delivery device
US7735751B2 (en) 2006-01-23 2010-06-15 Kimberly-Clark Worldwide, Inc. Ultrasonic liquid delivery device
DE102006012389A1 (de) * 2006-03-17 2007-09-20 MAX-PLANCK-Gesellschaft zur Förderung der Wissenschaften e.V. Verfahren und Vorrichtung zur Zerstäubung einer Flüssigkeit
EP1860317A1 (fr) * 2006-05-23 2007-11-28 Keihin Corporation Dispositif d'injection de carburant, dispositif de commande d'injection de carburant et procédé de commande du dispositif de commande d'injection
JP4535032B2 (ja) 2006-07-04 2010-09-01 株式会社デンソー 燃料噴射制御装置
DE102007016626A1 (de) * 2007-04-05 2008-10-16 Continental Automotive Gmbh Einspritzventil und Verfahren und Vorrichtung zum Betreiben des Einspritzventils
DE102007016725B3 (de) * 2007-04-07 2008-01-17 Dräger Medical AG & Co. KG Elektrodynamischer Antrieb für ein Dosierventil
FR2916810B1 (fr) * 2007-05-31 2009-08-28 Renault Sas Dispositif d'injection de fluide
FR2918122B1 (fr) * 2007-06-27 2009-08-28 Renault Sas Dispositif d'injection de fluide.
WO2009006318A1 (fr) 2007-06-29 2009-01-08 Artificial Muscle, Inc. Transducteurs polymères électroactifs pour des applications de rétroaction sensorielle
US20090057438A1 (en) * 2007-08-28 2009-03-05 Advanced Propulsion Technologies, Inc. Ultrasonically activated fuel injector needle
US7533830B1 (en) * 2007-12-28 2009-05-19 Kimberly-Clark Worldwide, Inc. Control system and method for operating an ultrasonic liquid delivery device
FR2929656A1 (fr) * 2008-04-03 2009-10-09 Renault Sas Injecteur de fluide, et procede de commande d'un tel injecteur
EP2239793A1 (fr) 2009-04-11 2010-10-13 Bayer MaterialScience AG Montage de film polymère électrique commutable et son utilisation
NL1037570C2 (en) * 2009-12-18 2011-06-21 Heinmade B V A device for dispensing a substance.
WO2012118916A2 (fr) 2011-03-01 2012-09-07 Bayer Materialscience Ag Procédés de fabrication automatisés pour la production de dispositifs et de films polymères déformables
CN103703404A (zh) 2011-03-22 2014-04-02 拜耳知识产权有限责任公司 电活化聚合物致动器双凸透镜系统
US20130068200A1 (en) * 2011-09-15 2013-03-21 Paul Reynolds Injector Valve with Miniscule Actuator Displacement
US9876160B2 (en) 2012-03-21 2018-01-23 Parker-Hannifin Corporation Roll-to-roll manufacturing processes for producing self-healing electroactive polymer devices
WO2013192143A1 (fr) 2012-06-18 2013-12-27 Bayer Intellectual Property Gmbh Cadre d'étirement pour processus d'étirement
WO2014066576A1 (fr) 2012-10-24 2014-05-01 Bayer Intellectual Property Gmbh Diode polymère
US9506429B2 (en) 2013-06-11 2016-11-29 Cummins Inc. System and method for control of fuel injector spray using ultrasonics
US20150315981A1 (en) * 2014-05-02 2015-11-05 General Electric Company Fuel supply system
DE102016125156B4 (de) 2015-12-23 2023-08-10 Volkswagen Aktiengesellschaft Verfahren zur Reinigung eines Kraftstoff-Einspritzventils mittels Ultraschallanregung

Family Cites Families (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1947329A1 (de) * 1969-09-18 1971-03-25 Szekessy Istvan Dipl Ing Vorrichtung zum dosierten Verteilen von Fluessigkeiten,insbesondere Zerstaeuber
GB1344635A (en) * 1970-05-14 1974-01-23 Plessey Co Ltd Transducers
GB1515002A (en) * 1975-03-05 1978-06-21 Plessey Co Ltd Fuel atomizers
CH557698A (fr) * 1972-08-23 1975-01-15 Ciba Geigy Ag Procede de fractionnement d'un liquide, dispositif mettant en oeuvre ce procede et application de ce procede a la granulation d'un produit liquefie au prealable.
US4211199A (en) * 1972-09-29 1980-07-08 Arthur K. Thatcher Computer controlled sonic fuel system
NL7301617A (fr) * 1973-02-06 1974-08-08
DE2412490A1 (de) * 1974-03-15 1975-09-25 Kunz Dieter Einspritz- und vernebelungskopf
DE2449379A1 (de) * 1974-10-17 1976-04-29 Rau Swf Autozubehoer Einspritzduese fuer oel- und gasbefeuerte oefen
GB2012357B (en) * 1978-01-17 1982-03-24 Plessey Co Ltd Low pressure fuel injection system
IT1121343B (it) * 1978-06-24 1986-04-02 Plessey Handel Investment Ag Iniettore di carburante
DE2904861C3 (de) * 1979-02-09 1981-08-06 Philips Patentverwaltung Gmbh, 2000 Hamburg Piezoelektrischer Flüssigkeitszerstäuber
DE3010178C2 (de) * 1980-03-17 1985-10-03 Kraftwerk Union AG, 4330 Mülheim Mit einem Schnellschlußventil ausgerüstete Schlitzdüse zur Herbeiführung impulsartiger Gasströmungen
DE3010985A1 (de) * 1980-03-21 1981-10-01 Siemens AG, 1000 Berlin und 8000 München Kraftstoff-einspritzduese mit zusaetzlicher kraftstoff-zerstaeubung
FR2488655A2 (fr) * 1980-08-18 1982-02-19 Rockwell International Corp Injecteur de carburant equipe d'un clapet de retenue a vibrations ultra-sonores, notamment pour moteur diesel
GB2096021B (en) * 1981-03-24 1985-01-23 British Hydromechanics High pressure liquid jetting guns
US4421280A (en) * 1981-09-28 1983-12-20 The Bendix Corporation Fuel injector
US4535743A (en) * 1983-04-15 1985-08-20 Nippon Soken, Inc. Fuel injection apparatus for an internal combustion engine
JPS6022066A (ja) * 1983-07-19 1985-02-04 Hitachi Metals Ltd 燃料噴射器
DE3344229A1 (de) * 1983-12-07 1985-06-20 Pierburg Gmbh & Co Kg, 4040 Neuss Elektromagnetisches brennstoffeinspritzventil
US4635849A (en) * 1984-05-03 1987-01-13 Nippon Soken, Inc. Piezoelectric low-pressure fuel injector
FR2567238B1 (fr) * 1984-07-06 1986-12-26 Sibe Electrovanne a effet piezo-electrique
JPS6189975A (ja) * 1984-10-09 1986-05-08 Diesel Kiki Co Ltd 内燃機関の燃料噴射ノズル装置
US4726523A (en) * 1984-12-11 1988-02-23 Toa Nenryo Kogyo Kabushiki Kaisha Ultrasonic injection nozzle
DE3501077A1 (de) * 1985-01-15 1986-07-17 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe Pulsventil
DE3517257A1 (de) * 1985-05-13 1987-01-15 Vdo Schindling Elektrisch betaetigbares kraftstoffeinspritzventil fuer brennkraftmaschinen
DE3533085A1 (de) * 1985-09-17 1987-03-26 Bosch Gmbh Robert Zumessventil zur dosierung von fluessigkeiten oder gasen
DE3533975A1 (de) * 1985-09-24 1987-03-26 Bosch Gmbh Robert Zumessventil zur dosierung von fluessigkeiten oder gasen
JPH065060B2 (ja) * 1985-12-25 1994-01-19 株式会社日立製作所 内燃機関用超音波式燃料微粒化装置の駆動回路
JPS63143361A (ja) * 1986-12-04 1988-06-15 Aisan Ind Co Ltd インジエクタ用バルブの制御方法
US4972996A (en) * 1989-10-30 1990-11-27 Siemens-Bendix Automotive Electronics L.P. Dual lift electromagnetic fuel injector

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Publication number Publication date
EP0436586A1 (fr) 1991-07-17
ES2015816A6 (es) 1990-09-01
JPH04501153A (ja) 1992-02-27
DE3833093A1 (de) 1990-04-12
WO1990003512A1 (fr) 1990-04-05
EP0361480B1 (fr) 1992-05-20
DE58902915D1 (de) 1993-01-14
EP0361480A1 (fr) 1990-04-04
ES2031331T3 (es) 1992-12-01
US5199641A (en) 1993-04-06

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