EP1358404B1 - Soupape d'injection de combustible - Google Patents

Soupape d'injection de combustible Download PDF

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Publication number
EP1358404B1
EP1358404B1 EP02704618A EP02704618A EP1358404B1 EP 1358404 B1 EP1358404 B1 EP 1358404B1 EP 02704618 A EP02704618 A EP 02704618A EP 02704618 A EP02704618 A EP 02704618A EP 1358404 B1 EP1358404 B1 EP 1358404B1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
injection valve
fuel
adapter
valve according
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
EP02704618A
Other languages
German (de)
English (en)
Other versions
EP1358404A1 (fr
Inventor
Ferdinand Reiter
Ottmar Martin
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1358404A1 publication Critical patent/EP1358404A1/fr
Application granted granted Critical
Publication of EP1358404B1 publication Critical patent/EP1358404B1/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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/005—Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on fuel injection apparatus
    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • 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
    • F02M69/042—Positioning of injectors with respect to engine, e.g. in the air intake conduit
    • F02M69/045—Positioning of injectors with respect to engine, e.g. in the air intake conduit for injecting into the combustion chamber
    • 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
    • F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • 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
    • F02M2200/90—Selection of particular materials
    • F02M2200/9015—Elastomeric or plastic materials

Definitions

  • the invention is based on a fuel injection valve according to the preamble of claim 1.
  • Fuel injection valves is a valve tube as Basic body of the fuel injection valve of three parts educated.
  • a core and a valve seat carrier are about one non-magnetic intermediate piece hydraulically tight with each other connected, wherein at least two joining and Connection points are necessary.
  • From DE 195 03 821 A1 is a fuel injection valve known in which the number of components of the valve tube is reduced, so that the number of connection and Joint is reduced.
  • the entire valve tube is off made of magnetically conductive material, so that on Magnetically non-conductive spacers are dispensed with can.
  • a disadvantage of the known from DE 195 03 821 A1 Fuel injection valve is that the housing shape this fuel injector for some applications in the direct fuel injection is not suitable because they is too short in view of the existing installation situation and not sufficiently sealed against the engine compartment.
  • EP-A-0 781 916 a Fuel injection valve for supplying fuel an internal combustion engine is known, which is connected to a inlet-side cylindrical portion of an inner pole an extension sleeve having an inner comprising a tubular part for the fuel supply, which is formed by an outer housing. Through the inner tubular part, the fuel is supplied while the electrical contact for contacting the magnetic coil is formed on the outside of the molded housing.
  • the fuel injection valve according to the invention with the characterizing features of the main claim has In contrast, the advantage that the individual lines, the electrical supply as well as the supply with Secure fuel in a fuel injector extending adapter are guided so that the unit as Total component against the pressure in the intake manifold and / or in Combustion chamber is sealed. This also makes it easier the installation, since the supply lines more accessible and all are arranged in one place.
  • Another advantage is that the adapter of two easy producible tubular, nestable hollow body is constructed.
  • Another advantage is that the adapter before the Welding on the fuel injector positive fit can be plugged, what the final assembly facilitated.
  • Fig. 1 shows in a fragmentary, schematic Sectional view a longitudinal section through a Embodiment of an inventively designed Fuel injection valve 1.
  • the fuel injection valve 1 is in the form of a Fuel injection valve for fuel injection systems of mixture-compacting, externally ignited Internal combustion engine running.
  • the Fuel injector 1 is particularly suitable for direct injection of fuel into one illustrated combustion chamber of an internal combustion engine.
  • the fuel injection valve 1 comprises a nozzle body 2, in which a valve needle 3 is arranged.
  • the Valve needle 3 is connected to a valve closing body 4 in Operative connection, with a on a valve seat body. 5 arranged valve seat surface 6 to a sealing seat interacts.
  • the nozzle body 2 is by a seal 8 against the outer pole 9 of a Magnetic circuit sealed.
  • a solenoid 10 is in one Coil housing 11 encapsulated and on a bobbin 12th wound, which at an inner pole 13 of the magnetic circuit is applied.
  • the inner pole 13 and the outer pole 9 are connected by a Split 26 separated from each other and rely on a Connecting component 29 from.
  • the magnetic coil 10 is connected via a Line 19 of a via an electrical plug contact 17th energized electric current.
  • the line 19 is according to the invention in an adapter 18, which has a inlet end 34 of the fuel injection valve. 1 plugged and with the fuel injector 1 in the area the magnetic coil 10 is preferably welded, arranged.
  • the line 19 is preferably via a connector 41st electrically connected to the magnetic coil 10.
  • the fuel is supplied via a central fuel supply 16, in a guided parallel to the line 19 recess 36 of the adapter 18 is formed, supplied and in inflow-side end 34 of the fuel injection valve 1 filtered by a filter element 25.
  • the Fuel injection valve 1 is through a first seal 28th against a cylinder head not shown as well by a second seal 37 against one also not sealed sealed fuel line.
  • the adapter 18 consists of two in one another tubular hollow bodies 42 and 43, wherein the inner Hollow body 42 'the fuel from the not shown Fuel line from the central fuel supply 16 to Filter element 25 leads, while the outer hollow body 43 the Line 19 and the inner hollow body 42 receives.
  • the valve needle 3 is in a valve needle guide fourteenth guided, which is designed disk-shaped. to Stroke adjustment is a paired shim 15.
  • An the other side of the dial 15 is a Anchor 20. This is about a first flange 21st non-positively connected to the valve needle 3 in conjunction, which by a weld 22 with the first flange 21 connected is.
  • On the first flange 21 is supported Return spring 23 from which in the present design of Fuel injection valve 1 by a sleeve 24 Bias is brought.
  • the inlet side of the sealing seat is a guide plate 35th designed for a central orientation of the Valve needle 3 ensures and thus tilting the Valve needle 3 and subsequent inaccuracies in the counteracts metered amount of fuel.
  • a guide plate 35th designed for a central orientation of the Valve needle 3 ensures and thus tilting the Valve needle 3 and subsequent inaccuracies in the counteracts metered amount of fuel.
  • the armature 20 drops sufficient reduction of the magnetic field by the pressure of the Return spring 23 from the inner pole 13, causing the with the valve needle 3 operatively connected flange 21st moved against the stroke direction.
  • the valve needle 3 is thereby moved in the same direction, causing the Valve closing body 4 touches on the valve seat surface 6 and the fuel injection valve 1 is closed.
  • the sealing of the adapter 18 against the pressure of the Combustion chamber or the intake manifold takes place during assembly of the fuel injection valve 1 to three different Species.
  • the from the nozzle body 2 and the Outside pole 9 of the magnetic coil 10 formed housing of the Fuel injection valve 1 assembled and means the interposed seal 8 against the outer Pressure sealed.
  • the connection between the coil housing 11 and the inner pole 9 is preferably carried out by welding, as well as the connection between the coil housing 11 and the adapter 18.
  • the coil housing 11 may be integrally formed with the adapter 18, so that a Joint less occurs.
  • the seals 8, 28 and 37 are preferably as O-rings executed, the cost-effective and resistant to influences as heat or solution behavior of the fuel produced are.
  • One between the inner hollow body 42 and the outer hollow body 43 formed recess 45 and other occurring column 40 are filled with a sealant 39 filled and thus also sealed.
  • Fig. 2 shows in a further, only partially cut schematic view of the inventively designed Fuel injection valve 1.
  • the invention is not limited to those shown Embodiments limited and z. B. also for Fuel injection valves 1 with magnetostrictive or piezoelectric actuators 10 and any types of Fuel injectors 1 applicable.

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)
  • Manufacturing & Machinery (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (9)

  1. Injecteur de carburant (1), en particulier pour l'injection directe de combustible dans une chambre de combustion d'un moteur à combustion interne à allumage commandé et à compression de mélange, comprenant un corps de buse (2), qui forme avec un pôle extérieur (9) un corps de boítier, un actionneur (10) qui peut être excité électriquement par une ligne (19) et un contact à broche (17), et une arrivée centrale de carburant (16), la ligne (19) et l'arrivée de carburant (16) étant disposées ensemble dans un adaptateur (18) qui peut être enfiché sur une extrémité d'alimentation (34) du corps de boítier et assemblé à ce dernier, cet adaptateur étant composé de deux corps creux (42, 43),
    caractérisé en ce que
    la ligne (19) est disposée dans un évidement (45) formé entre un corps creux intérieur (42) et un corps creux extérieur (43).
  2. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    les corps creux (42, 43) de l'adaptateur (18) sont de forme tubulaire.
  3. Injecteur de carburant selon la revendication 1 ou 2,
    caractérisé en ce que
    le corps creux intérieur (42) est disposé dans l'évidement (45) du corps creux extérieur (43).
  4. Injecteur de carburant selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce que
    le combustible est acheminé à travers un évidement (36) dans le corps creux intérieur (42).
  5. Injecteur de carburant selon l'une quelconque des revendications 1 à 4,
    caractérisé en ce que
    l'adaptateur (18) est soudé au corps de boítier formé par le corps de buse (2), le pôle extérieur (9) et un boítier de bobine (11) d'une bobine magnétique (10).
  6. Injecteur de carburant selon l'une quelconque des revendications 1 à 5,
    caractérisé en ce que
    l'évidement (45) est rempli d'une masse d'étanchéité (39) pour assurer l'étanchéité.
  7. Injecteur de carburant selon l'une quelconque des revendications 1 à 6,
    caractérisé en ce que
    l'adaptateur (18) est rendu étanche au moyen d'un premier joint d'étanchéité (28).
  8. Injecteur de carburant selon l'une quelconque des revendications 1 à 7,
    caractérisé en ce que
    l'adaptateur (18) est rendu étanche par rapport à une conduite de carburant au moyen d'un deuxième joint d'étanchéité (37).
  9. Injecteur de carburant selon les revendications 7 et 8,
    caractérisé en ce que
    le premier joint d'étanchéité (28) et le deuxième joint d'étanchéité (37) sont formés comme joints toriques.
EP02704618A 2001-01-30 2002-01-28 Soupape d'injection de combustible Expired - Lifetime EP1358404B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10103932 2001-01-30
DE10103932A DE10103932B4 (de) 2001-01-30 2001-01-30 Brennstoffeinspritzventil
PCT/DE2002/000296 WO2002061270A1 (fr) 2001-01-30 2002-01-28 Soupape d'injection de combustible

Publications (2)

Publication Number Publication Date
EP1358404A1 EP1358404A1 (fr) 2003-11-05
EP1358404B1 true EP1358404B1 (fr) 2005-06-15

Family

ID=7672093

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02704618A Expired - Lifetime EP1358404B1 (fr) 2001-01-30 2002-01-28 Soupape d'injection de combustible

Country Status (5)

Country Link
US (1) US6896210B2 (fr)
EP (1) EP1358404B1 (fr)
JP (1) JP2004518067A (fr)
DE (2) DE10103932B4 (fr)
WO (1) WO2002061270A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009000184A1 (de) * 2009-01-13 2010-07-15 Robert Bosch Gmbh Brennstoffeinspritzventil

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3010612A1 (de) * 1980-03-20 1981-10-01 Robert Bosch Gmbh, 7000 Stuttgart Elektromagnetisch betaetigbares ventil
GB9014334D0 (en) * 1990-06-27 1990-08-15 Lucas Ind Plc Fuel injector
BR9307704A (pt) * 1992-12-21 1999-08-31 Transcom Gas Tech Injetor de fluido
IT232490Y1 (it) * 1994-07-01 2000-01-10 Elasis Sistema Ricerca Fiat Dispositivo di registrazione della corsa dell'otturatore per un iniettore di combustibile
DE19503821A1 (de) * 1995-02-06 1996-08-08 Bosch Gmbh Robert Elektromagnetisch betätigbares Ventil
US5755386A (en) * 1995-12-26 1998-05-26 General Motors Corporation Fuel injector deep drawn valve guide
DE19626576A1 (de) * 1996-07-02 1998-01-08 Bosch Gmbh Robert Brennstoffeinspritzventil
DE19712591A1 (de) * 1997-03-26 1998-10-01 Bosch Gmbh Robert Brennstoffeinspritzventil und Verfahren zur Herstellung sowie Verwendung eines Brennstoffeinspritzventils
DE19736682A1 (de) * 1997-08-22 1999-02-25 Bosch Gmbh Robert Brennstoffeinspritzventil
DE19855568A1 (de) * 1998-12-02 2000-06-08 Bosch Gmbh Robert Brennstoffeinspritzventil
US6123275A (en) * 1999-08-12 2000-09-26 Delphi Technologies, Inc. Dual gap fuel injector

Also Published As

Publication number Publication date
JP2004518067A (ja) 2004-06-17
DE10103932A1 (de) 2002-08-29
WO2002061270A1 (fr) 2002-08-08
EP1358404A1 (fr) 2003-11-05
DE10103932B4 (de) 2010-01-21
DE50203408D1 (de) 2005-07-21
US6896210B2 (en) 2005-05-24
US20030168530A1 (en) 2003-09-11

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