DE3344229A1 - ELECTROMAGNETIC FUEL INJECTION VALVE - Google Patents

ELECTROMAGNETIC FUEL INJECTION VALVE

Info

Publication number
DE3344229A1
DE3344229A1 DE19833344229 DE3344229A DE3344229A1 DE 3344229 A1 DE3344229 A1 DE 3344229A1 DE 19833344229 DE19833344229 DE 19833344229 DE 3344229 A DE3344229 A DE 3344229A DE 3344229 A1 DE3344229 A1 DE 3344229A1
Authority
DE
Germany
Prior art keywords
injection
injection valve
magnet system
closing body
fuel
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Withdrawn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
DE19833344229
Other languages
German (de)
Inventor
Heinrich Dipl.-Ing. 4044 Kaarst Hütten
Gerhard K. Dr.-Ing. 5100 Aachen Wißler
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 DE19833344229 priority Critical patent/DE3344229A1/en
Priority to FR8418059A priority patent/FR2556440B1/en
Priority to GB08430593A priority patent/GB2150978B/en
Publication of DE3344229A1 publication Critical patent/DE3344229A1/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Withdrawn legal-status Critical Current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
    • 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
    • F02M45/04—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 with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • F02M45/08—Injectors peculiar thereto
    • F02M45/086—Having more than one injection-valve controlling discharge orifices
    • 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
    • F02M51/0614—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature
    • F02M51/0617—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature having two or more electromagnets
    • 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
    • F02M51/08—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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/46—Valves, e.g. injectors, with concentric valve bodies

Landscapes

  • 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)

Description

ET ektrotnagneti sches Brennstoff ei nspri tzventi 1ET ectrotnagnetic fuel injection valve 1

Die Erfindung betrifft ein elektromagnetisches Brennstoffeinspritzventil mit einem Magnetsystem zur Betätigung eines die Einspritzöffnung steuernden Schließkörpers.The invention relates to an electromagnetic fuel injector with a magnet system for actuating a closing body that controls the injection opening.

Aus der DE-OS 22 37 746 ist ein derartiges Einspritzventil bekannt. Darüber hinaus weist dieses Einspritzventil zwei Magnetwicklungen auf, wodurch große magnetische Kräfte auf den Schließkörper ausgeübt werden sollen.Such an injection valve is known from DE-OS 22 37 746. In addition, this injection valve has two magnet windings on, whereby large magnetic forces are exerted on the closing body should be.

Bei einem Einspritzsystem, das lediglich ein Brennstoffeinspritzventil in das Saugrohr einer Brennkraftmaschine aufweist, muß das Einspritzventil geeignet sein, die Brennstoffmenge für den gesamten Betriebsbereich der Brennkraftmaschine zu dosieren. Das heißt, das Einspritzventil muß mit ausreichender Genauigkeit den Brennstoff für den Bedarf der Brennkraftmaschine im Leerlaufbetrieb bei geringen Drehzahlen und auch den großen Brennstoffbedarf im Vollastbetrieb bei hohen Drehzahlen dosieren können. Die Schwierigkeit bei herkömmlichen Einspritzventilen besteht darin, daß ein Kompromiß gefunden werden muß zwischen dem stark schwankenden Brennstoffbedarf und der konstruktiven Ausführung des Einspritzventils, der durch die mögliche Größe der Einspritzöffnung und der möglichen Impulslänge des magnetischen Systems im Zusammenhang mit der Motordrehzahl und den dynamischen Eigenschaften des Magnetankersystems. Aus der DE-OS 26 11 311 ist es bei einem Vergasersystem bekannt, für die unterschiedlichen Betriebsbereiche verschiedene unterschiedlich große Durchflußquerschnitte einer Leitung mittels einer Mehrzahl von Magnetventilen freizugeben.In an injection system that only has a fuel injector has in the intake manifold of an internal combustion engine, the injection valve must be suitable for metering the amount of fuel for the entire operating range of the internal combustion engine. That is, the injector must with sufficient accuracy the fuel for the needs of the internal combustion engine in idle operation at low speeds and also the large fuel requirement in full load operation at high speeds can dose. The difficulty with conventional fuel injectors is that a compromise has to be found between the widely fluctuating fuel requirements and the structural design of the injection valve, which is determined by the possible size of the injection opening and the possible pulse length of the magnetic system in relation to the motor speed and the dynamic properties of the armature system. From DE-OS 26 11 311 it is known in a carburetor system, for the different operating areas different flow cross-sections of different sizes of a line by means of a To release plurality of solenoid valves.

Der Erfindung liegt die Aufgabe zugrunde, ein Einspritzventil zu schaffen, das in kompakter Bauweise dazu geeignet ist, den Brennstoffbedarf eines Verbrennungsmotors über den gesamten Betriebsbereich mit der notwendigen Genauigkeit zu dosieren.The object of the invention is to provide an injection valve create a compact design that is suitable for meeting the fuel requirements of an internal combustion engine over the entire operating range with the necessary accuracy.

8329/1 Fi.8329/1 Fi.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß ein getrennt vom ersten Magnetsystem elektrisch angesteuertes zweites Magnetsystem einen koaxialen ersten Schließkörper angeordneten zweiten Schließkörper zur Steuerung einer koaxial zur ersten Einspritzöffnung angeordneten zweiten Einspritzöffnung betätigt.
5According to the invention, this object is achieved in that a second magnet system, electrically controlled separately from the first magnet system, actuates a second closing body arranged coaxially to the first closing body to control a second injection opening arranged coaxially to the first injection opening.
5

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung schematisch dargestellt und wird im folgenden näher beschrieben.An embodiment of the invention is shown schematically in the drawing and is described in more detail below.

Der innere zweite Schließkörper 1 besteht aus einem Anker 2, einer Nadel 3 und einer Schließkugel 4, diese verschließt eine Einspritzöffnung 5. Durch diese können geringe Brennstoffmengen zugemessen werden. Der Magnet 6 arbeitet dabei gegen die Schließkraft einer inneren Feder 7.
Wird zur Dosierung eine Impulslänge größer als die zulässige Maximaldauer, die abhängig von der maximalen Motordrehzahl ist, erforderlich, wird das äußere, erste Magnetsystem 8 angesteuert. Dadurch wird vom ersten Schließkörper 9, der als zylindrischer Anker ausgebildet ist, eine ringförmige Einspritzöffnung 10 geöffnet. Die Einspritzöffnung des zweiten Magnetsystems bleibt dabei zunächst geschlossen. Das erste Magnetsystem 8 arbeitet dann gegen die Schließkräfte der äußeren und inneren Feder 11, 7. Die kleinste Öffnungsimpulslänge des ersten Magnetsystems 8dosiert eine Brennstoffmenge, die dem Volumen bei der maximalen öffnungsimpulslänge des zweiten, inneren Magnetsystems 6 entspricht. The inner, second closing body 1 consists of an armature 2, a needle 3 and a closing ball 4, which closes an injection opening 5. Through this, small amounts of fuel can be metered. The magnet 6 works against the closing force of an inner spring 7.
If a pulse length greater than the maximum permissible duration, which is dependent on the maximum motor speed, is required for metering, the outer, first magnet system 8 is activated. As a result, an annular injection opening 10 is opened by the first closing body 9, which is designed as a cylindrical armature. The injection opening of the second magnet system initially remains closed. The first magnet system 8 then works against the closing forces of the outer and inner springs 11, 7. The smallest opening pulse length of the first magnet system 8 meters an amount of fuel that corresponds to the volume at the maximum opening pulse length of the second, inner magnet system 6.

Falls das mit der maximalen öffnung der Impulslänge durch die Einspritzöffnung 10 dosierte Volumen nicht ausreicht, kann durch den gleichzeitigen Betrieb des ersten und des zweiten Magnetsystems eine weitere Erhöhung des dosierten Brennstoffvolumens erzielt werden, wobei eine Addition der beiden den Einspritzöffnungen 5 und 10 zugeordneten Dosierflächen erfolgt. So kann leicht ein Verhältnis von 12 oder größer zwischen dem minimal und dem maximal dosierten Brennstoffvolumen je Einspritzimpulslänge erzielt werden, was von der Dimensionierung der Dosierflächen der Einspritzöffnungen 5 und 10 abhängt. Die erste Einspritzöffnung 10 wird durch Anlegen eines ringförmigen Teils 12, in dem sich zentrisch die zweite Einspritzöffnung 5 befindet, am Ventil-If that is the case with the maximum opening of the pulse length through the injection opening If the metered volume is not sufficient, the simultaneous operation of the first and the second magnet system can result in a further increase of the metered fuel volume can be achieved, with a Addition of the two metering areas assigned to the injection openings 5 and 10 takes place. So can easily get a ratio of 12 or greater between the minimum and the maximum metered fuel volume each Injection pulse length can be achieved, which depends on the dimensioning of the metering surfaces of the injection openings 5 and 10. The first injection port 10 is made by applying an annular part 12, in which is centrally located the second injection opening 5, on the valve

8329/1 Fi.8329/1 Fi.

gehäuse 13 durch die Schließkraft der Feder 11 verschlossen. Der zylindrische Anker 9 wird in seinem Hub durch Anschlagen einer Büchse 14, die fest mit dem Schließkörper 9 verbunden ist, begrenzt, wobei die Büchse 14 gegen eine im ersten Magnetsystem 8 eingesetzte Hülse fährt.housing 13 closed by the closing force of spring 11. The cylindrical one Armature 9 is limited in its stroke by striking a sleeve 14, which is firmly connected to the closing body 9, wherein the sleeve 14 moves against a sleeve inserted in the first magnet system 8.

Der Brennstoffzufluß erfolgt durch eine Brennstoffzuleitung 16, die stromauf beider Einspritzöffnungen das Einspritzventil unter einen bestimmten Brennstoffdruck setzt.The fuel flow takes place through a fuel supply line 16, which upstream of both injection openings, the injection valve under one sets certain fuel pressure.

Die Dosierflächen 5, 10 werden also von konzentrisch ineinander verschachtelten Magnetsystemen 6, 8 unabhängig voneinander impulsform!g geöffnet. Die Betätigung der Magnetsysteme erfolgt synchron zur Ansaugfrequenz der Brennkraftmaschine.The metering surfaces 5, 10 are thus nested concentrically in one another Magnet systems 6, 8 pulse shape independently of one another! G opened. The actuation of the magnet systems takes place synchronously with the intake frequency of the internal combustion engine.

8329/1 Fi.8329/1 Fi.

Claims (2)

PIERBURG GMBH. & CO KG
Leuschstrasse 1
N e u s sPIERBURG GMBH. & CO KG
Leuschstrasse 1
Nut PatentansprücheClaims ( 1)/Elektromagnetisches Brennstoffeinspritzventil mit einem Magnetsystem zur Betätigung eines die Einspritzöffnung steuernden Schließkörpersa dadurch gekennzeichnet; daß ein getrennt vom ersten Magnetsystem (8) elektrisch angesteuertes zweites Magnetsystem (6) einen koaxial im ersten Schließkörper (9) angeordneten zweiten Schließkörper (1) zur Steuerung einer koaxial zur ersten Einspritzöffnung (10) angeordneten zweiten Einspritzöffnung (5) betätigt.(1) / Electromagnetic fuel injection valve with a magnet system for actuating a closing body controlling the injection opening a characterized ; that a second magnet system (6) electrically controlled separately from the first magnet system (8) actuates a second closing body (1) arranged coaxially in the first closing body (9) to control a second injection opening (5) arranged coaxially with the first injection opening (10). 2) Einspritzventil nach Anspruch 1, dadurch gekennzeichnet, daß stromauf beider Einspritzöffnungen (5, 10) der Druck einer gemeinsamen Brennstoffzuleitung (16) herrscht.2) Injection valve according to claim 1, characterized in that the pressure of a common fuel supply line (16) prevails upstream of the two injection openings (5, 10). 8329/1 Fi. 2.8329/1 Fi. 2.
DE19833344229 1983-12-07 1983-12-07 ELECTROMAGNETIC FUEL INJECTION VALVE Withdrawn DE3344229A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE19833344229 DE3344229A1 (en) 1983-12-07 1983-12-07 ELECTROMAGNETIC FUEL INJECTION VALVE
FR8418059A FR2556440B1 (en) 1983-12-07 1984-11-27 ELECTROMAGNETIC FUEL INJECTION VALVE
GB08430593A GB2150978B (en) 1983-12-07 1984-12-04 Electromagnetic fuel injection valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19833344229 DE3344229A1 (en) 1983-12-07 1983-12-07 ELECTROMAGNETIC FUEL INJECTION VALVE

Publications (1)

Publication Number Publication Date
DE3344229A1 true DE3344229A1 (en) 1985-06-20

Family

ID=6216262

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19833344229 Withdrawn DE3344229A1 (en) 1983-12-07 1983-12-07 ELECTROMAGNETIC FUEL INJECTION VALVE

Country Status (3)

Country Link
DE (1) DE3344229A1 (en)
FR (1) FR2556440B1 (en)
GB (1) GB2150978B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4019820A1 (en) * 1989-06-21 1991-01-10 Gen Motors Corp FUEL INJECTOR
WO1991006758A1 (en) * 1989-10-30 1991-05-16 Siemens Aktiengesellschaft Dual lift electromagnetic fuel injector
DE4403148A1 (en) * 1994-02-03 1995-08-10 Iav Motor Gmbh Multi-stream fuel injection nozzle for IC engine with at least two intake ports per cylinder
DE19526644C1 (en) * 1995-07-21 1996-07-04 Daimler Benz Ag Defective ignition or fuel injection device detection system for i.c. engine
US5872312A (en) * 1995-07-21 1999-02-16 Mercedes-Benz Ag Method for recognizing defective ignition or injection system in internal combustion engines
EP0864743A3 (en) * 1997-03-10 2001-08-08 Robert Bosch Gmbh Fuel injection valve for internal combustion engines

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3833093A1 (en) * 1988-09-29 1990-04-12 Siemens Ag FUEL INJECTOR PROVIDED FOR INTERNAL COMBUSTION ENGINE WITH CONTROLLABLE CHARACTERISTICS OF THE FUEL JET
GB2227281B (en) * 1989-01-19 1993-03-10 Ilmor Engineering Limited Fuel injection assembly for internal combustion engine
US5004162A (en) * 1989-06-21 1991-04-02 General Motors Corporation Solenoid actuated valve assembly
JP2758064B2 (en) * 1989-12-08 1998-05-25 トヨタ自動車株式会社 Fuel injection valve
DE4141930B4 (en) * 1991-12-19 2007-02-08 Robert Bosch Gmbh Electromagnetically actuated injection valve
FR2722538B1 (en) * 1994-07-12 1996-09-20 Magneti Marelli France "BI-JET" FUEL INJECTOR WITH PARALLEL GAPS FOR INTERNAL COMBUSTION ENGINE SUPPLIED BY INJECTION
DE29504898U1 (en) * 1995-03-23 1996-07-25 FEV Motorentechnik GmbH & Co. KG, 52078 Aachen Valve nozzle
DE10034446A1 (en) * 2000-07-15 2002-01-24 Bosch Gmbh Robert Fuel injector
FR2921109B1 (en) * 2007-09-17 2009-11-20 Peugeot Citroen Automobiles Sa METHOD AND DEVICE FOR SUPPLYING THE AIR / FUEL MIXTURE OF A CYLINDER OF AN INTERNAL COMBUSTION ENGINE
DE102008000702A1 (en) * 2008-03-17 2009-09-24 Robert Bosch Gmbh injector

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE415417C (en) * 1924-04-05 1925-06-29 Acro A G Fluid-controlled injection valve for internal combustion engines
US1882392A (en) * 1930-03-07 1932-10-11 Musgrave Joseph Leslie Electromagnetic double control valve
DE2237746A1 (en) * 1972-08-01 1974-02-07 Bosch Gmbh Robert INJECTION VALVE FOR DIESEL COMBUSTION ENGINES
DE2261278C2 (en) * 1972-12-14 1983-12-15 Karl Dungs Gmbh & Co, 7067 Urbach Double valve
JPS51106829A (en) * 1975-03-18 1976-09-22 Nissan Motor KUNENPISEIGYOSOCHI
US4020803A (en) * 1975-10-30 1977-05-03 The Bendix Corporation Combined fuel injection and intake valve for electronic fuel injection engine systems
US4342443A (en) * 1979-10-26 1982-08-03 Colt Industries Operating Corp Multi-stage fuel metering valve assembly
DE3113475A1 (en) * 1981-04-03 1982-10-21 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection nozzle

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4019820A1 (en) * 1989-06-21 1991-01-10 Gen Motors Corp FUEL INJECTOR
WO1991006758A1 (en) * 1989-10-30 1991-05-16 Siemens Aktiengesellschaft Dual lift electromagnetic fuel injector
DE4403148A1 (en) * 1994-02-03 1995-08-10 Iav Motor Gmbh Multi-stream fuel injection nozzle for IC engine with at least two intake ports per cylinder
DE4403148C2 (en) * 1994-02-03 1999-01-28 Iav Motor Gmbh Electromagnetically controlled multi-jet injection valve, especially for internal combustion engines with two intake channels per cylinder
DE19526644C1 (en) * 1995-07-21 1996-07-04 Daimler Benz Ag Defective ignition or fuel injection device detection system for i.c. engine
US5872312A (en) * 1995-07-21 1999-02-16 Mercedes-Benz Ag Method for recognizing defective ignition or injection system in internal combustion engines
EP0864743A3 (en) * 1997-03-10 2001-08-08 Robert Bosch Gmbh Fuel injection valve for internal combustion engines

Also Published As

Publication number Publication date
GB2150978A (en) 1985-07-10
FR2556440B1 (en) 1988-03-04
GB2150978B (en) 1987-09-03
FR2556440A1 (en) 1985-06-14
GB8430593D0 (en) 1985-01-09

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Owner name: PIERBURG GMBH, 4040 NEUSS, DE

8139 Disposal/non-payment of the annual fee