EP0615064B1 - Système de commande d'une soupape d'injection d'un moteur à combustion interne - Google Patents

Système de commande d'une soupape d'injection d'un moteur à combustion interne Download PDF

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Publication number
EP0615064B1
EP0615064B1 EP19940102943 EP94102943A EP0615064B1 EP 0615064 B1 EP0615064 B1 EP 0615064B1 EP 19940102943 EP19940102943 EP 19940102943 EP 94102943 A EP94102943 A EP 94102943A EP 0615064 B1 EP0615064 B1 EP 0615064B1
Authority
EP
European Patent Office
Prior art keywords
valve
closing
control system
housing
insert
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
EP19940102943
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German (de)
English (en)
Other versions
EP0615064A1 (fr
Inventor
Marco A. Ganser
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.)
Ganser Hydromag AG
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Ganser Hydromag AG
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 Ganser Hydromag AG filed Critical Ganser Hydromag AG
Publication of EP0615064A1 publication Critical patent/EP0615064A1/fr
Application granted granted Critical
Publication of EP0615064B1 publication Critical patent/EP0615064B1/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
    • 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

Definitions

  • the present invention relates to a control arrangement known from DE-B-1 290 010 for an injection valve for internal combustion engines according to the preamble of Claim 1.
  • a control arrangement with the additional characterizing features of claim 1 points over known control arrangements thereof kind, as in particular in FR-A-2,543,647, however also described in DE-A-26 47 744 or US-A-3,680,782 are lower leakage losses and is also of much simpler construction.
  • the fuel injector shown in the drawings in the State between two injection processes is shown is via a high pressure fuel connection 10 and Fuel return connection 12 with a high-pressure delivery device for the fuel and via electrical connections 14 connected to an electronic control.
  • the high pressure conveyor and the electronic Controls are not shown in the drawings.
  • the high-pressure delivery device pumps the fuel over the high-pressure fuel connection 10 in a fuel supply bore 16, which is in a valve housing 18 of the Injector is located. Part of the fuel will practically depressurized via the fuel return connection 12 returned to the high pressure conveyor, such as is explained in more detail below.
  • the fuel is supplied via the fuel supply bore 16 on the one hand to a room 20 and on the other hand to the control section passed, which is shown enlarged in Fig.2.
  • the space 20 is formed in a nozzle body 22 which by means of a retaining part designed as a union nut 24 is screwed onto the valve housing 18.
  • a retaining part designed as a union nut 24 is screwed onto the valve housing 18.
  • the space 20 is formed in a nozzle body 22 with the fuel supply bore 16 connecting bore 25 available.
  • a nozzle needle 26 is slidably guided in the nozzle body 22, which rests with its lower end on a nozzle needle seat 28 and closes injection bores 30 which are in a nozzle tip 32 forming part of the nozzle body 22 are trained.
  • the nozzle needle 26 is closed on the one hand by a nozzle needle spring 34 and the other by the on manner to be described acting on its rear end Fuel pressure maintained on its nozzle needle seat 28. in the In the area of the space 20, the nozzle needle 26 has a shoulder 36 on.
  • the control part shown enlarged in FIGS. 2 and 3 has a 3/2-way valve 37, which by means of an electromagnet 38 is switched.
  • the 3/2-way valve 37 has a closure member 40 which by means of a guide shaft 42 and one built into the valve housing 18, fixed insert 44, between which a Sliding surface 45 is formed, is guided.
  • the Insert part 44 and a further insert part 46 are of this type installed in the valve housing 18 and by a Lock nut 48 fixed that none or none significant leakage between the high pressure part and the Low pressure part of the injection valve can take place.
  • This z. B. with a press fit or a narrow sliding fit between the valve housing 18 and the insert parts 44 and 46 reached.
  • Other fuel-tight connections are but conceivable, e.g.
  • the two insert parts 44.46 are pressed into the valve housing 18 by means of a or inserted spacer ring 50 at a distance kept apart.
  • the closure member 40 forms with the Insert part 44 a first valve 52 and with the other Insert part 46, a second valve 54 (Fig. 3).
  • closure 40 has a first Closing surface 56 and a second closing surface 58, with a valve seat 60 or 62 in the insert part 44 or 46 cooperate.
  • Both closing surfaces 56.58 are as Shell surfaces formed by circular cones.
  • Valve seats 60, 62 in the form of annular edges are in the insert parts 44, 46 formed surfaces 64,66, the are also circular cone surfaces.
  • the annular groove 78 could also be formed in the valve housing 18.
  • the valve room 72 is via an existing connection bore in the insert part 46 82 connected to a control room 84, on the one hand by the insert part 46 and on the other hand by a Control piston 86 is complete, which slides in the valve housing 18 is performed. Between the control piston 86 and a connecting rod 87 is arranged in the nozzle needle 26. The fuel pressure in the control room 84 thus acts on the Control piston 86 and the connecting rod 87 on the rear end of the nozzle needle 26.
  • the guide shaft integral with the closure member 40 42 is the one shown in FIGS. 1 and 2 Embodiment fixed with an anchor 104 of the Electromagnet 38 connected, the excitation coil 106 over the electrical connections 14 from the electronic Control receives control impulses.
  • a transmission pin 108 is passed through pressed against the armature 104 by means of a compression spring 110 becomes.
  • the force that the compression spring 110 exerts on the Uebertragungsw 108 exercises can be by means of a Adjust adjusting screw 112 (Fig. 1).
  • the Armature 104 of the electromagnet 38 instead of that Guide shaft 42 with the transmission pin 108 firmly connected.
  • the transmission pin 108 is in this case in the de-energized state of the electromagnet 38 from the Compression spring 110 pressed against the guide shaft 42.
  • This can e.g. in a manner known per se by a suitable one Design of the valve seat 60 can be realized that there is no complete hydraulic compensation and thus the hydraulic pressure force on the guide shaft 42 presses on and moves up.
  • a compression spring which on the Side of the valve 54 on the closure member 40 and thus also on the guide shaft 42 in the direction of Anchor movement works.
  • valve 52 of the Directional control valve 37 which serves as an inlet valve, as in the Figures shown essentially under the effect of Compression spring 110 kept open while the valve 54, the forms an outlet valve is closed.
  • valve room 72 and also in the control room 84 there is a fuel pressure that Can exceed 1000 bar. This fuel pressure works via the control piston 86 and the connecting rod 87 the nozzle needle 26, which is pressed against the nozzle needle seat 28 is and the injection bores 30 closes.
  • the directional valve 37 is leaking from the high-pressure part to the low pressure part between the injection processes small because only the leadership shaft 42 for the closure member 40 by means of the sliding surface 45 in Insert part 44 is slidably guided together with the insert part 46 in the manner described in the Valve housing 18 is inserted.
  • the leakage can be small being held.
  • FIG. 4 is a representation corresponding to FIG. 3 another embodiment shown, which differs from the embodiment according to FIGS. 1-3 only by one different design of the closure member 40, which is designated in Fig. 4 with 140. For the rest are in 3 and 4 corresponding parts for themselves the same Reference numerals used.
  • Closure member 140 In contrast to the closure member shown in FIGS. 1-3 40 with circular conical closing surfaces 56, 58 are at Closure member 140, the two designated 156, 158 Closing surfaces arched and preferably as spherical jacket surfaces educated.

Claims (9)

  1. Système de commande pour une soupape d'injection d'un moteur à combustion interne, destiné à commander le déplacement d'ouverture et de fermeture de l'organe de soupape de la soupape d'injection, comprenant une valve (37) susceptible d'être commutée au moyen d'un électroaimant (38), dont l'opercule (40, 140) mobile en translation en va-et-vient présente une première et une seconde surface d'obturation (56, 58, 156, 158) et vient en contact selon la position de commutation de la valve (37) soit au moyen de la première surface d'obturation (56, 156) avec un premier siège de soupape (60) fixe par rapport au carter, lequel est agencé du côté d'une conduite d'amenée (16) pour le carburant sous pression, soit par l'intermédiaire de la seconde surface d'obturation (58, 158) avec un second siège de soupape (62) fixe par rapport au carter, lequel est agencé du côté d'une conduite de décharge de pression (92), et comprenant une chambre de commande (64) qui peut être mise en communication au moyen de la valve (37) au choix via un passage ménagé à travers le premier siège de soupape fixe (60) avec la conduite d'amenée (16) pour le carburant, ou bien via un passage ménagé à travers le second siège de soupape fixe (62) avec la conduite de décharge de pression (92), la pression du carburant dans la chambre de commande (84) agissant sur l'extrémité postérieure de l'organe de soupape (26) et repoussant ce dernier contre le siège de soupape (28) de la soupape d'injection, caractérisé en ce que l'obturateur (40, 140) de la valve, agencé à distance de l'électroaimant (38), est guidé au moyen d'une unique surface de coulissement (45) dans un insert (44) solidaire du carter et agencé entre l'obturateur (40, 140) et l'électroaimant (38), ce pourquoi l'obturateur (40, 140) est relié de manière fixe sur le côté de sa première surface d'obturation (56, 156) à un organe de guidage (42) qui est guidé dans l'insert (44) et qui se trouve en liaison d'action avec une armature (140) de l'électroaimant (38).
  2. Système de commande selon la revendication 1, caractérisé en ce que les surfaces d'obturation (56, 58) de l'obturateur (40) sont réalisées comme des surfaces enveloppe de cônes sphériques.
  3. Système de commande selon la revendication 1, caractérisé en ce que les surfaces d'obturation (156, 158) de l'obturateur (140) sont bombées, et réalisées de préférence sous forme de surfaces enveloppe sphériques.
  4. Système de commande selon l'une des revendications 1 à 3, caractérisé en ce que les sièges de soupape (60, 62) sont réalisés sous forme d'arêtes.
  5. Système de commande selon les revendications 2 et 4, caractérisé en ce que, pour former les sièges de soupape (60, 62) sont prévues des surfaces en cônes sphériques (64, 66), l'angle d'ouverture du cône qui détermine les surfaces en cônes sphériques (140, 66) différant d'une faible valeur, de préférence au maximum de 3°, de l'angle d'ouverture du cône sphérique déterminé par les surfaces d'obturation associées (56, 58).
  6. Système de commande selon l'une des revendications 1 à 5, caractérisé en ce que dans l'insert (44) sont réalisés le premier siège de soupape (60) ainsi qu'une liaison (80, 81) vers la conduite d'amenée de carburant (16), et en ce qu'il est prévu un second insert (46) disposé dans le boítier de soupape (18), dans lequel est réalisé le second siège de soupape (62), et une chambre de soupape (72) étant formée entre les inserts (44, 46).
  7. Système de commande selon la revendication 6, caractérisé en ce que la chambre de soupape (72) est reliée via au moins une ouverture de liaison (82) avec la chambre de commande (84).
  8. Système de commande selon l'une ou l'autre des revendications 6 et 7, caractérisé en ce qu'un élément d'écartement (50) est agencé entre les inserts (44, 46).
  9. Système de commande selon l'une des revendications 6 à 8, caractérisé en ce que dans le second insert (46) est prévue une liaison de sortie (88, 90) qui mène depuis la chambre de soupape (72) jusqu'à une conduite de retour (92).
EP19940102943 1993-03-08 1994-02-26 Système de commande d'une soupape d'injection d'un moteur à combustion interne Expired - Lifetime EP0615064B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00696/93A CH686845A5 (de) 1993-03-08 1993-03-08 Steueranordnung fuer ein Einspritzventil fuer Verbrennungskraftmaschinen.
CH696/93 1993-03-08

Publications (2)

Publication Number Publication Date
EP0615064A1 EP0615064A1 (fr) 1994-09-14
EP0615064B1 true EP0615064B1 (fr) 1998-08-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940102943 Expired - Lifetime EP0615064B1 (fr) 1993-03-08 1994-02-26 Système de commande d'une soupape d'injection d'un moteur à combustion interne

Country Status (3)

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EP (1) EP0615064B1 (fr)
CH (1) CH686845A5 (fr)
DE (1) DE59406752D1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4404050C1 (de) * 1994-02-09 1994-12-01 Daimler Benz Ag Injektor mit Magnetventilsteuerung für eine Brennkraftmaschine
DE4434892A1 (de) * 1994-09-29 1996-04-11 Siemens Ag Einspritzventil
DE19634105A1 (de) * 1996-08-23 1998-01-15 Daimler Benz Ag Einspritzventil für Verbrennungskraftmaschinen
DE19709794A1 (de) * 1997-03-10 1998-09-17 Bosch Gmbh Robert Ventil zum Steuern von Flüssigkeiten
DE19729844A1 (de) * 1997-07-11 1999-01-14 Bosch Gmbh Robert Kraftstoffeinspritzvorrichtung
DE19744723A1 (de) * 1997-10-10 1999-04-15 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung
GB9805854D0 (en) 1998-03-20 1998-05-13 Lucas France Fuel injector
EP1000240B1 (fr) * 1998-05-28 2004-03-24 Siemens Aktiengesellschaft Soupape d'injection de carburant pour moteurs a combustion interne
GB9823134D0 (en) 1998-10-23 1998-12-16 Lucas Ind Plc Valve
DE19907544C2 (de) * 1999-02-22 2002-12-05 Siemens Ag Injektor für eine Einspritzanlage einer Brennkraftmaschine
DE10024703A1 (de) * 2000-05-18 2001-11-22 Bosch Gmbh Robert Einspritzanordnung für ein Kraftstoff-Speichereinspritzsystem einer Verbrennungsmaschine
JP2006257874A (ja) * 2004-04-30 2006-09-28 Denso Corp インジェクタ
CN112943499B (zh) * 2021-02-25 2022-05-03 山东菏泽华星油泵油嘴有限公司 一种喷油嘴的新型喷孔机构

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2927737A (en) * 1952-04-12 1960-03-08 Bosch Gmbh Robert Fuel injection valves
GB1097752A (en) * 1963-09-09 1968-01-03 Ass Eng Ltd Fuel injection valves for internal combustion engines
FR2068857A5 (fr) * 1969-10-24 1971-09-03 Sofredi
FR2145081A5 (fr) * 1971-07-08 1973-02-16 Peugeot & Renault
IT1217260B (it) * 1987-08-25 1990-03-22 Weber Srl Valvola di iniezione del combustibile a comando elettromagnetico per motori a ciclo diesel
DE3814156A1 (de) * 1988-04-27 1989-11-09 Mesenich Gerhard Pulsmoduliertes hydraulikventil
JP2712760B2 (ja) * 1990-05-29 1998-02-16 トヨタ自動車株式会社 燃料噴射弁

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Publication number Publication date
CH686845A5 (de) 1996-07-15
DE59406752D1 (de) 1998-10-01
EP0615064A1 (fr) 1994-09-14

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