DE3810826A1 - Solenoid injection valve for internal combustion engines - Google Patents

Solenoid injection valve for internal combustion engines

Info

Publication number
DE3810826A1
DE3810826A1 DE19883810826 DE3810826A DE3810826A1 DE 3810826 A1 DE3810826 A1 DE 3810826A1 DE 19883810826 DE19883810826 DE 19883810826 DE 3810826 A DE3810826 A DE 3810826A DE 3810826 A1 DE3810826 A1 DE 3810826A1
Authority
DE
Germany
Prior art keywords
valve
internal combustion
closing body
combustion engines
stop
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Withdrawn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
DE19883810826
Other languages
German (de)
Inventor
Dieter Thoennessen
Heinrich Huetten
Ulrich Remde
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 DE19883810826 priority Critical patent/DE3810826A1/en
Publication of DE3810826A1 publication Critical patent/DE3810826A1/en
Withdrawn legal-status Critical Current

Links

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
    • 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
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0664—Injectors 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
    • F02M51/0671—Injectors 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 having an elongated valve body attached thereto
    • 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
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0632—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a spherically or partly spherically shaped armature, e.g. acting as valve body
    • 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
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0635—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding
    • F02M51/0642—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto
    • F02M51/0653—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto the valve being an elongated body, e.g. a needle valve
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures 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 are known, in which the stop surfaces between armature and magnet have been provided with a nickel coating. The application of this nickel coating is very expensive and the thickness of the coating can be produced only with large tolerances, so that the air gap between the bearing surfaces (in relation to the magnetic circuit) varies greatly. By contrast, the characteristic feature of the new valve is that at least one of the stop surfaces of the round rod or the valve closing body is of calotte shell (spherical) design and has a circular body insert of antimagnetic, high-strength material in the middle of the stop surface. The new valve is characterised by extremely low susceptibility to wear and controlled magnetic effect and is suitable for internal combustion engines. <IMAGE>

Description

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

Derartige Einspritzventile sind bekannt. Aus der DE-OS 32 30 844 ist ein Einspritzven­ til bekannt, bei dem die Anschlagflächen zwischen Anker und Magnet mit verschleiß­ festen Oberflächen versehen sind, die durch Vernickeln gebildet werden. Die Dicke der Nickelschicht soll so gewählt werden, daß zwischen Anker und Magnet ein vorbestimm­ ter Luftspalt gebildet wird.Such injection valves are known. From DE-OS 32 30 844 is an injection valve til known in which the stop surfaces between the armature and magnet with wear solid surfaces are provided, which are formed by nickel plating. The thickness of the Nickel layer should be chosen so that a predetermined between armature and magnet ter air gap is formed.

Diese Auftragstechnik ist jedoch sehr teuer, da, um Nacharbeit zu vermeiden, alle nicht zu vernickelnden Flächen der Bauteile abgedeckt werden müssen und trotzdem eine elektrische Kontaktierung mit Stromkabeln erfolgen muß. Darüber hinaus ist eine galvanisch aufgebrachte Nickelschicht nicht gleichmäßig dick, so daß ein so vorbe­ stimmter Luftspalt (in bezug auf den Magnetkreis) sehr groß toleriert werden muß. Hierdurch sind Kleben, verspäteter Abfall des Ankers oder zu geringe Haltekraft gege­ ben.However, this application technique is very expensive, because to avoid rework, everyone surfaces of the components that are not to be nickel-plated must still be covered electrical contact with power cables must be made. In addition, one electroplated nickel layer is not uniformly thick, so that is over correct air gap (with respect to the magnetic circuit) must be tolerated very large. This prevents sticking, delayed drop of the anchor or insufficient holding force ben.

Aufgabe der Erfindung ist es daher, ein gattungsgemäßes Einspritzventil so zu gestal­ daß der Luftspalt im Magnetkreis zwischen Magnet und Ventilschließkörper bei geöffnetem Ventil mit höchster Genauigkeit für jedes Ventil gleich erreicht wird, wo­ bei Verschleiß der Anschlagflächen und teure Herstellung ausgeschlossen sein sollen.The object of the invention is therefore to design a generic injection valve that the air gap in the magnetic circuit between the magnet and the valve closing body open valve with the highest accuracy for each valve is reached where should be excluded in the event of wear of the stop surfaces and expensive manufacture.

Diese Aufgabe ist durch die im Kennzeichen des Patentanspruchs angegebenen Merkmale gelöst.This object is by the specified in the characterizing part of the claim Features solved.

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 Betrieb 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 nicht sichtbaren Ventilsitz belasteten Ventilschließkörper 9.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 required for 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 closing body 9 loaded by the force of a spring 8 against a valve seat that is not visible.

Erfindungsgemäß sind die Anschlagflächen 10, 11 des Rundstabes 7 und des Ventil­ schließkörpers 9 kugelkalottenförmig ausgeführt, was durch Radien 12, 13 angegeben ist, und weisen mittig in der Anschlagfläche 10, 11 einen Rundkörpereinsatz 14 aus antimagnetischem, hochfestem Werkstoff auf. According to the stop surfaces 10 , 11 of the round rod 7 and the valve closing body 9 are spherical, which is indicated by radii 12 , 13 , and have a round body insert 14 made of antimagnetic, high-strength material in the middle of the stop surface 10 , 11 .

Die Anschlagflächen 10, 11 des Rundstabes 7 und des Ventilschließkörpers 9 sind nach dem Einsetzen des Rundkörpereinsatzes 14 entweder im Zuge der gesamten Feinbear­ beitung oder separat in die vorgegebene Kugelkalottenform bearbeitet.The stop surfaces 10 , 11 of the round rod 7 and the valve closing body 9 are processed after the insertion of the round body insert 14 either in the course of the entire Feinbear processing or separately in the predetermined spherical cap shape.

Durch den Anteil der Kugelkalottenform, der auf den Rundkörpereinsatz 14 fällt, ist sichergestellt, daß eine Anlage nur in den Bereich des Rundkörpereinsatzes 14 fällt (Punktberührung) und gleichzeitig, daß ein definierter Luftspalt zwischen Rundstab und Ventilschließkörperflächen 10, 11 besteht. Das erfindungsgemäß ausgebildete Ventil 1 zeichnet sich durch vorteilhaft auswählbarem Werkstoffeinsatz, geringste Verschleißan­ fälligkeit, kontrollierte Magnetwirkung und dadurch Ausschaltung von Kleben oder Ver­ ringerung der Haltekraft des Ventilschließkörpers 9 aus. Es versteht sich von selbst, daß die Kugelkalottenform und der Rundkörpereinsatz auch nur bei einem der Bauteile 7, 9 angewendet zu werden braucht, wobei eventuell jedoch ein kleinerer Radius 12, 13 zu wählen ist.The proportion of the spherical cap shape that falls on the round body insert 14 ensures that a system only falls into the area of the round body insert 14 (point contact) and at the same time that there is a defined air gap between the round rod and valve closing body surfaces 10 , 11 . The valve 1 designed according to the invention is characterized by the advantageously selectable use of materials, the lowest wear and tear, controlled magnetic action and thereby elimination of gluing or reduction of the holding force of the valve closing body 9 . It goes without saying that the spherical cap shape and the round body insert need only be used for one of the components 7 , 9 , although a smaller radius 12 , 13 may have to be selected.

Claims (1)

Elektromagnetisches Einspritzventil für Brennkraftmaschinen, dessen Brennstoffaustritt von einem durch eine Feder auf einen Ventilsitz belasteten Ventilschließkörper kon­ trolliert wird, der unter der Kraftwirkung eines erregten, mittels einer elektrischen Spule und Eisenkern in einem Luftspalt erzeugten Magnetfeldes als Anker wirkt und vom Ventilsitz abhebt, wobei der in die Spule hineinragende Eisenkern als Rundstab ausgeführt im Ventilgehäuse eingespannt ist und einen Anschlag für den Ventil­ schließkörper bildet, dadurch gekennzeichnet, daß wenigstens eine der Anschlagflächen (10, 11) des Rundstabes (7) oder des Ventilschließkörpers (9) kugelkalottenförmig (ballig) ausgeführt ist und mittig in der Anschlagfläche (10, 11) einen Rundkörperein­ satz (14) aus antimagnetischem, hochfestem Werkstoff aufweist.Electromagnetic injection valve for internal combustion engines, the fuel outlet of which is controlled by a spring-loaded valve closing body, which acts as an armature under the force of an excited magnetic field generated by an electric coil and iron core and acts as an armature and lifts off the valve seat, the in the coil protruding iron core designed as a round rod is clamped in the valve housing and forms a stop for the valve closing body, characterized in that at least one of the stop surfaces ( 10 , 11 ) of the round rod ( 7 ) or the valve closing body ( 9 ) is spherical (spherical) and in the middle of the stop surface ( 10 , 11 ) has a round body insert ( 14 ) made of antimagnetic, high-strength material.
DE19883810826 1988-03-30 1988-03-30 Solenoid injection valve for internal combustion engines Withdrawn DE3810826A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19883810826 DE3810826A1 (en) 1988-03-30 1988-03-30 Solenoid injection valve for internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19883810826 DE3810826A1 (en) 1988-03-30 1988-03-30 Solenoid injection valve for internal combustion engines

Publications (1)

Publication Number Publication Date
DE3810826A1 true DE3810826A1 (en) 1989-10-12

Family

ID=6351085

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19883810826 Withdrawn DE3810826A1 (en) 1988-03-30 1988-03-30 Solenoid injection valve for internal combustion engines

Country Status (1)

Country Link
DE (1) DE3810826A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0460125B1 (en) * 1989-12-21 1993-11-03 Robert Bosch Gmbh Electromagnetically actuated valve
WO1995014166A1 (en) * 1993-11-19 1995-05-26 Korostashevsky Vladimir Markov Electromagnetic nozzle for injecting fuel into an internal combustion engine
US5732888A (en) * 1993-12-09 1998-03-31 Robert Bosch Gmbh Electromagnetically operable valve
EP1088986A1 (en) * 1999-09-28 2001-04-04 MAGNETI MARELLI S.p.A. Fuel injector
US6302371B1 (en) 1998-07-24 2001-10-16 Robert Bosch Gmbh Electromagnetically actuatable valve
AT500185A3 (en) * 2004-02-27 2006-02-15 Mitsubishi Heavy Ind Ltd MECHANISM OF AN ELECTROMAGNETIC VALVE
WO2017144186A1 (en) * 2016-02-26 2017-08-31 Robert Bosch Gmbh Solenoid valve

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1263396B (en) * 1966-04-20 1968-03-14 Philips Patentverwaltung Solenoid valve for a fuel injection system for internal combustion engines
US3378732A (en) * 1965-04-15 1968-04-16 Penn Controls Electromagnetic actuator
DE1922615A1 (en) * 1968-05-02 1970-01-02 Matsushita Electric Ind Co Ltd Color correction system
DE2049671A1 (en) * 1970-10-09 1972-04-13 Bosch Gmbh Robert Solenoid valve with measures against hydraulic sticking
DE2701291A1 (en) * 1976-01-20 1977-07-21 Sud Maintenance S A R L METHOD FOR MANUFACTURING THE END OF AN ELECTROMAGNETIC INJECTION NOZZLE AND ELECTROMAGNETIC INJECTION NOZZLE
DE3013694A1 (en) * 1979-05-03 1980-11-13 Gen Motors Corp ELECTROMAGNETIC FUEL INJECTION DEVICE
DE3139669A1 (en) * 1981-10-06 1983-04-21 Robert Bosch Gmbh, 7000 Stuttgart SOLENOID VALVE, ESPECIALLY FUEL INJECTION VALVE
DE3301501A1 (en) * 1982-01-28 1983-08-04 General Motors Corp., Detroit, Mich. Electromagnetic fuel injection device
DE3312067A1 (en) * 1983-04-02 1984-10-04 Robert Bosch Gmbh, 7000 Stuttgart ELECTROMAGNETICALLY ACTUABLE VALVE
DE3320610A1 (en) * 1983-06-08 1984-12-13 Gerhard Dipl.-Ing. 4630 Bochum Mesenich Injection valve for internal combustion engines
EP0051009B1 (en) * 1980-10-29 1985-01-02 Regie Nationale Des Usines Renault Electromagnetic ball valve injector
DE3408012A1 (en) * 1984-03-05 1985-09-05 Gerhard Dipl.-Ing. Warren Mich. Mesenich ELECTROMAGNETIC INJECTION VALVE
EP0201191A1 (en) * 1985-05-06 1986-11-12 General Motors Corporation Thin orifice director plate for an electromagnetic fuel injector
DE3710467A1 (en) * 1986-05-31 1987-12-03 Bosch Gmbh Robert IC engine fuel injection valve - has electromagnetically operated valve needle with toroidal surface cooperating with valve seat
DE3623554A1 (en) * 1986-07-12 1988-01-21 Pierburg Gmbh ELECTROMAGNETIC, INTERMITTENT INJECTION VALVE

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3378732A (en) * 1965-04-15 1968-04-16 Penn Controls Electromagnetic actuator
DE1263396B (en) * 1966-04-20 1968-03-14 Philips Patentverwaltung Solenoid valve for a fuel injection system for internal combustion engines
DE1922615A1 (en) * 1968-05-02 1970-01-02 Matsushita Electric Ind Co Ltd Color correction system
DE2049671A1 (en) * 1970-10-09 1972-04-13 Bosch Gmbh Robert Solenoid valve with measures against hydraulic sticking
DE2701291A1 (en) * 1976-01-20 1977-07-21 Sud Maintenance S A R L METHOD FOR MANUFACTURING THE END OF AN ELECTROMAGNETIC INJECTION NOZZLE AND ELECTROMAGNETIC INJECTION NOZZLE
DE3013694A1 (en) * 1979-05-03 1980-11-13 Gen Motors Corp ELECTROMAGNETIC FUEL INJECTION DEVICE
EP0051009B1 (en) * 1980-10-29 1985-01-02 Regie Nationale Des Usines Renault Electromagnetic ball valve injector
DE3139669A1 (en) * 1981-10-06 1983-04-21 Robert Bosch Gmbh, 7000 Stuttgart SOLENOID VALVE, ESPECIALLY FUEL INJECTION VALVE
DE3301501A1 (en) * 1982-01-28 1983-08-04 General Motors Corp., Detroit, Mich. Electromagnetic fuel injection device
DE3312067A1 (en) * 1983-04-02 1984-10-04 Robert Bosch Gmbh, 7000 Stuttgart ELECTROMAGNETICALLY ACTUABLE VALVE
DE3320610A1 (en) * 1983-06-08 1984-12-13 Gerhard Dipl.-Ing. 4630 Bochum Mesenich Injection valve for internal combustion engines
DE3408012A1 (en) * 1984-03-05 1985-09-05 Gerhard Dipl.-Ing. Warren Mich. Mesenich ELECTROMAGNETIC INJECTION VALVE
EP0201191A1 (en) * 1985-05-06 1986-11-12 General Motors Corporation Thin orifice director plate for an electromagnetic fuel injector
DE3710467A1 (en) * 1986-05-31 1987-12-03 Bosch Gmbh Robert IC engine fuel injection valve - has electromagnetically operated valve needle with toroidal surface cooperating with valve seat
DE3623554A1 (en) * 1986-07-12 1988-01-21 Pierburg Gmbh ELECTROMAGNETIC, INTERMITTENT INJECTION VALVE

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0460125B1 (en) * 1989-12-21 1993-11-03 Robert Bosch Gmbh Electromagnetically actuated valve
WO1995014166A1 (en) * 1993-11-19 1995-05-26 Korostashevsky Vladimir Markov Electromagnetic nozzle for injecting fuel into an internal combustion engine
US5732888A (en) * 1993-12-09 1998-03-31 Robert Bosch Gmbh Electromagnetically operable valve
US6302371B1 (en) 1998-07-24 2001-10-16 Robert Bosch Gmbh Electromagnetically actuatable valve
EP1088986A1 (en) * 1999-09-28 2001-04-04 MAGNETI MARELLI S.p.A. Fuel injector
AT500185A3 (en) * 2004-02-27 2006-02-15 Mitsubishi Heavy Ind Ltd MECHANISM OF AN ELECTROMAGNETIC VALVE
AT500185B1 (en) * 2004-02-27 2007-05-15 Mitsubishi Heavy Ind Ltd MECHANISM OF AN ELECTROMAGNETIC VALVE
WO2017144186A1 (en) * 2016-02-26 2017-08-31 Robert Bosch Gmbh Solenoid valve
CN108700220A (en) * 2016-02-26 2018-10-23 罗伯特·博世有限公司 Solenoid valve
CN108700220B (en) * 2016-02-26 2020-12-29 罗伯特·博世有限公司 Electromagnetic valve

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