DE3811003A1 - Solenoid injection valve for internal combustion engines - Google Patents

Solenoid injection valve for internal combustion engines

Info

Publication number
DE3811003A1
DE3811003A1 DE19883811003 DE3811003A DE3811003A1 DE 3811003 A1 DE3811003 A1 DE 3811003A1 DE 19883811003 DE19883811003 DE 19883811003 DE 3811003 A DE3811003 A DE 3811003A DE 3811003 A1 DE3811003 A1 DE 3811003A1
Authority
DE
Germany
Prior art keywords
valve
closing body
valve closing
injection valve
internal combustion
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.)
Withdrawn
Application number
DE19883811003
Other languages
German (de)
Inventor
Walter Schauer
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.)
Pierburg GmbH
Original Assignee
Pierburg 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 Pierburg GmbH filed Critical Pierburg GmbH
Priority to DE19883811003 priority Critical patent/DE3811003A1/en
Publication of DE3811003A1 publication Critical patent/DE3811003A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/18Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0664Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
    • F02M51/0667Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature acting as a valve or having a short valve body attached thereto
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00Magnets
    • H01F7/06Electromagnets; Actuators including electromagnets
    • H01F7/08Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16Rectilinearly-movable armatures
    • H01F7/1607Armatures entering the winding

Landscapes

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

Abstract

Injection valves with conical closing surfaces are known, in which even a slight centre misalignment of the components produces a lunate leakage gap. In order to avoid this disadvantage, an injection valve according to the invention has the characteristic features that the valve closing body is axially guided in a housing part producing the magnetic yoke, that the valve closing body and a nozzle part interact with flat seating surfaces and that at least one of the flat seating surfaces has a central recess, so that a circular contact surface exists between the flat seating surfaces. The new valve is characterised by greater concentricity tolerances, without exhibiting leakages and other functional defects, thereby permitting economic manufacture. <IMAGE>

Description

Die Erfindung betrifft ein elektromagnetisches Einspritzventil für Brennkraftmaschinen nach dem Oberbegriff des Patentanspruchs 1.The invention relates to an electromagnetic injection valve for internal combustion engines according to the preamble of claim 1.

Derartige Einspritzventile sind bekannt. Aus der DE-OS 36 23 554 ist ein Einspritzven­ til entnehmbar, dessen Ventilschließkörper eine kegelförmige Schließfläche aufweist und mit einem entsprechend ausgeformten Düsenteil zusammenwirkt.Such injection valves are known. From DE-OS 36 23 554 is an injection valve til removable, the valve closing body has a conical closing surface and cooperates with an appropriately shaped nozzle part.

Obwohl Ventile mit kegelförmigen Oberflächen weite Verwendung finden und weit­ gehend zufriedenstellend funktionieren, stellt die Montage derartiger Ventile ein Pro­ blem dar, da bereits ein geringer Mittenversatz der Bauteile einen mondsichelförmigen Leckspalt verursachen.Although valves with conical surfaces are used widely and widely Properly functioning satisfactorily, the assembly of such valves represents a pro This is a problem because even a small center offset of the components has a crescent shape Cause leakage gap.

Hiervon ausgehend liegt der Erfindung die Aufgabe zugrunde, ein gattungsgemäßes Ein­ spritzventil so zu gestalten, daß ein Leckspalt verhindert und eine Montage auch mit Mittenversatz der Bauteile möglich wird.Proceeding from this, the object of the invention is to create a generic one To design the spray valve so that a leakage gap is prevented and also to be installed Center offset of the components is possible.

Diese Aufgabe ist durch die im Kennzeichen des Patentanspruchs 1 angegebenen Merk­ male gelöst. Weiterbildende Merkmale sind im Unteranspruch genannt.This object is by the specified in the characterizing part of claim 1 times solved. Further features are mentioned in the subclaim.

Mit der Erfindung erreichte Vorteile werden in der nachfolgenden Beschreibung eines Ausführungsbeispiels genannt, das in der Zeichnung dargestellt ist.Advantages achieved with the invention are described in the following description Embodiment called, which is shown in the drawing.

Die Zeichnung zeigt ein elektromagnetisches Einspritzventil 1 für Brennkraftmaschi­ nen, gebildet aus einem Gehäuse 2, einem Filterteil 3, einem elektrischen Anschluß 4 und einem Düsenteil 5. Im Inneren weist das Ventil 1 alle für einen ordentlichen Be­ trieb notwendigen Bauteile auf, u.a., wie in dem Ausbruchschnitt ersichtlich ist, eine Spule 6, einen als Rundstab 7 ausgebildeten Eisenkern und einen durch Kraftwirkung einer Feder 8 gegen einen im Düsenteil 5 sichtbaren Ventilsitz 9 belasteten Ventil­ schließkörper 10.The drawing shows an electromagnetic injection valve 1 for Brennkraftmaschi NEN, formed from a housing 2 , a filter part 3 , an electrical connection 4 and a nozzle part 5th Inside, the valve 1 has all the components necessary for a proper operation, including, as can be seen in the cut-out section, a coil 6 , an iron core designed as a round rod 7 and a valve seat 9 that is visible through the force of a spring 8 against a valve seat 9 visible in the nozzle part 5 loaded valve closing body 10 .

Der Ventilschließkörper 10 ist in einem den magnetischen Rückschluß bewirkenden Ge­ häuseteil 11 axial geführt und weist eine Flachsitzfläche 12 auf, die mit dem Ventil­ sitz 9 des Düsenteils 5 zusammenwirkt, der ebenfalls von einer Flachsitzfläche 13 ge­ bildet wird. Wenigstens eine der beiden Flachsitzflächen 12, 13 weist zentrisch eine Ausnehmung 14, 15 auf, die kalottenförmig (wie am Ventilschließkörper 10 dargestellt ist) oder zylindrisch (wie am Düsenteil 5 dargestellt st) ausgeführt sein kann, so daß eine kreisringförmige Kontaktfläche besteht. Es versteht sich, daß nur eine der Flach­ sitzflächen 12, 13 derart ausgeführt zu werden braucht und daß die Ausnehmungsform beliebig gewählt werden kann, ohne den Bereich der Erfindung zu verlassen. The valve closing body 10 is axially guided in a magnetic yoke Ge housing part 11 and has a flat seat surface 12 which cooperates with the valve seat 9 of the nozzle part 5 , which is also formed by a flat seat surface 13 GE. At least one of the two flat seat surfaces 12 , 13 has a recess 14 , 15 centrally, which may be dome-shaped (as shown on the valve closing body 10 ) or cylindrical (as shown on the nozzle part 5 st), so that there is an annular contact surface. It goes without saying that only one of the flat seat surfaces 12 , 13 needs to be designed in this way and that the recess shape can be chosen as desired without leaving the scope of the invention.

Die Erfindung basiert auf der Überlegung, daß eine Teilefertigung mit hoher Genauig­ keit bezüglich der Einhaltung von Winkelvorgaben möglich ist, die hinsichzlich der Ein­ haltung der Mittigkeit nicht gegeben ist.The invention is based on the consideration that a part production with high accuracy is possible with regard to the compliance with angle specifications, which with respect to the on keeping the center is not given.

Mit der Erfindung ist eine Montage von Teilen mit Mittigkeitstoleranzen von erhebli­ cher Größe möglich geworden, ohne daß Leckspalte, Verschleiß oder sonstige Mängel der Funktionsfähigkeit der Einspritzventile 1 entstehen. Hierdurch ist auch eine wirtschaftliche Fertigung möglich.With the invention, an assembly of parts with centering tolerances of erhebli cher size has become possible without leakage gaps, wear or other defects in the operability of the injection valves 1 . This also enables economical production.

Claims (2)

1. Elektromagnetisches Einspritzventil für Brennkraftmaschinen, dessen Brennstoffaus­ tritt von einem durch eine Feder auf einen Ventilsitz belasteten Ventilschließkörper kontrolliert wird, der unter der Kraftwirkung eines erregten, mittels einer elektri­ schen Spule und Eisenkern in einem Luftspalt erzeugten Magnetfeldes als Anker wirkt und vom Ventilsitz abhebt, wobei der in den Spulenkörper hineinragende Ei­ senkern als Rundstab ausgeführt ist und einen Anschlag für den Ventilschließkörper bildet, dadurch gekennzeichnet, daß der Ventilschließkörper (10) in einem den magnetischen Rückschluß bewirkenden Gehäuseteil (11) axial geführt ist, daß der Ventilschließkörper (10) und ein Düsenteil (5) mit Flachsitzflächen (12, 13) zusam­ menwirken und daß wenigstens eine der Flachsitzflächen (12, 13) zentrisch eine Ausnehmung (14, 15) aufweist, so daß eine kreisringförmige Kontaktfläche zwischen den Flachsitzflächen (12, 13) besteht.1.electromagnetic injection valve for internal combustion engines, the fuel outlet of which is controlled by a valve closing body loaded by a spring on a valve seat, which acts as an armature under the force of an excited magnetic field generated by an electrical coil and iron core in an air gap and lifts off the valve seat, whereby the egg protruding into the coil body is designed as a round rod and forms a stop for the valve closing body, characterized in that the valve closing body ( 10 ) is axially guided in a housing part ( 11 ) causing the magnetic yoke, that the valve closing body ( 10 ) and a nozzle part ( 5 ) cooperate with flat seat surfaces ( 12 , 13 ) and that at least one of the flat seat surfaces ( 12 , 13 ) has a recess ( 14 , 15 ) centrally, so that there is an annular contact surface between the flat seat surfaces ( 12 , 13 ). 2. Einspritzventil nach Anspruch 1, dadurch gekennzeichnet, daß die Ausnehmung (14, 15) kugelkalottenförmig oder zylindrisch ausgeführt ist.2. Injection valve according to claim 1, characterized in that the recess ( 14 , 15 ) is spherical or cylindrical.
DE19883811003 1988-03-31 1988-03-31 Solenoid injection valve for internal combustion engines Withdrawn DE3811003A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19883811003 DE3811003A1 (en) 1988-03-31 1988-03-31 Solenoid injection valve for internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19883811003 DE3811003A1 (en) 1988-03-31 1988-03-31 Solenoid injection valve for internal combustion engines

Publications (1)

Publication Number Publication Date
DE3811003A1 true DE3811003A1 (en) 1989-10-12

Family

ID=6351163

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19883811003 Withdrawn DE3811003A1 (en) 1988-03-31 1988-03-31 Solenoid injection valve for internal combustion engines

Country Status (1)

Country Link
DE (1) DE3811003A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2685390A1 (en) * 1991-12-19 1993-06-25 Bosch Gmbh Robert INJECTION VALVE LIABLE TO BE ELECTROMAGNETICALLY ACTUATED IN DIRECTION OF THE LONGITUDINAL AXIS OF THE VALVE.
EP0582298A1 (en) * 1992-08-07 1994-02-09 MAGNETI MARELLI S.p.A. Perfected electromagnetic fuel metering and atomizing valve

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2528683A1 (en) * 1974-06-29 1976-01-22 Lucas Electrical Co Ltd FUEL INJECTOR
EP0026060A1 (en) * 1979-09-20 1981-04-01 LUCAS INDUSTRIES public limited company Fuel injector
DE2936425A1 (en) * 1979-09-08 1981-04-02 Robert Bosch Gmbh, 7000 Stuttgart ELECTROMAGNETICALLY ACTUABLE FUEL INJECTION VALVE
GB2124430A (en) * 1982-07-29 1984-02-15 Lucas Ind Plc An electromgnetic fuel injector with a plate-type armature
DE3312067A1 (en) * 1983-04-02 1984-10-04 Robert Bosch Gmbh, 7000 Stuttgart ELECTROMAGNETICALLY ACTUABLE VALVE
US4531678A (en) * 1982-08-18 1985-07-30 Robert Bosch Gmbh Injection valve
DE3502087A1 (en) * 1985-01-23 1986-07-24 Vdo Adolf Schindling Ag, 6000 Frankfurt ELECTROMAGNETICALLY ACTUABLE FUEL INJECTION VALVE
EP0197567A2 (en) * 1985-02-07 1986-10-15 WEBER S.r.l. Electromagnetic injector for an I.C. engine
DE3522698A1 (en) * 1985-06-25 1987-01-08 Pierburg Gmbh & Co Kg ELECTROMAGNETIC, INTERMITTENT INJECTION VALVE
DE3716429A1 (en) * 1986-05-16 1987-11-19 Lucas Ind Plc FUEL INJECTION NOZZLE
DE3716403A1 (en) * 1986-05-16 1987-11-19 Lucas Ind Plc FUEL INJECTION NOZZLE

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2528683A1 (en) * 1974-06-29 1976-01-22 Lucas Electrical Co Ltd FUEL INJECTOR
DE2936425A1 (en) * 1979-09-08 1981-04-02 Robert Bosch Gmbh, 7000 Stuttgart ELECTROMAGNETICALLY ACTUABLE FUEL INJECTION VALVE
EP0026060A1 (en) * 1979-09-20 1981-04-01 LUCAS INDUSTRIES public limited company Fuel injector
GB2124430A (en) * 1982-07-29 1984-02-15 Lucas Ind Plc An electromgnetic fuel injector with a plate-type armature
US4531678A (en) * 1982-08-18 1985-07-30 Robert Bosch Gmbh Injection valve
DE3312067A1 (en) * 1983-04-02 1984-10-04 Robert Bosch Gmbh, 7000 Stuttgart ELECTROMAGNETICALLY ACTUABLE VALVE
DE3502087A1 (en) * 1985-01-23 1986-07-24 Vdo Adolf Schindling Ag, 6000 Frankfurt ELECTROMAGNETICALLY ACTUABLE FUEL INJECTION VALVE
EP0197567A2 (en) * 1985-02-07 1986-10-15 WEBER S.r.l. Electromagnetic injector for an I.C. engine
DE3522698A1 (en) * 1985-06-25 1987-01-08 Pierburg Gmbh & Co Kg ELECTROMAGNETIC, INTERMITTENT INJECTION VALVE
DE3716429A1 (en) * 1986-05-16 1987-11-19 Lucas Ind Plc FUEL INJECTION NOZZLE
DE3716403A1 (en) * 1986-05-16 1987-11-19 Lucas Ind Plc FUEL INJECTION NOZZLE

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2685390A1 (en) * 1991-12-19 1993-06-25 Bosch Gmbh Robert INJECTION VALVE LIABLE TO BE ELECTROMAGNETICALLY ACTUATED IN DIRECTION OF THE LONGITUDINAL AXIS OF THE VALVE.
EP0582298A1 (en) * 1992-08-07 1994-02-09 MAGNETI MARELLI S.p.A. Perfected electromagnetic fuel metering and atomizing valve
US5375772A (en) * 1992-08-07 1994-12-27 Weber S.R.L. Perfected electromagnetic fuel metering and atomizing valve

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8139 Disposal/non-payment of the annual fee