EP0840848A1 - Soupape d'injection de carburant pour injection sous haute pression - Google Patents

Soupape d'injection de carburant pour injection sous haute pression

Info

Publication number
EP0840848A1
EP0840848A1 EP96946069A EP96946069A EP0840848A1 EP 0840848 A1 EP0840848 A1 EP 0840848A1 EP 96946069 A EP96946069 A EP 96946069A EP 96946069 A EP96946069 A EP 96946069A EP 0840848 A1 EP0840848 A1 EP 0840848A1
Authority
EP
European Patent Office
Prior art keywords
housing
fuel injection
solenoid valve
control
valve
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.)
Granted
Application number
EP96946069A
Other languages
German (de)
English (en)
Other versions
EP0840848B1 (fr
Inventor
Bernhard Bronkal
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 EP0840848A1 publication Critical patent/EP0840848A1/fr
Application granted granted Critical
Publication of EP0840848B1 publication Critical patent/EP0840848B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • 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
    • 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
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0017—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/0033—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat
    • F02M63/0036—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat with spherical or partly spherical shaped valve member ends
    • 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
    • F02M2547/00—Special features for fuel-injection valves actuated by fluid pressure
    • F02M2547/003—Valve inserts containing control chamber and valve piston
    • 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
    • F02M2700/00—Supplying, feeding or preparing air, fuel, fuel air mixtures or auxiliary fluids for a combustion engine; Use of exhaust gas; Compressors for piston engines
    • F02M2700/07—Nozzles and injectors with controllable fuel supply
    • F02M2700/077—Injectors having cooling or heating means

Definitions

  • the invention is based on a fuel injection valve for high-pressure injections according to the preamble of patent claim 1.
  • a fuel injection valve for high-pressure injections according to the preamble of patent claim 1.
  • Such a fuel injection valve known from US Pat. No. 4,972,997, is supplied with fuel by a high-pressure accumulator.
  • the injection is controlled electrohydraulically by supplying fuel under pressure from the fuel high pressure source to a control chamber. This control pressure turns the valve member of the fuel injection valve into
  • the closed position is maintained because the control area with the control pressure is larger than the area at the fuel injector.
  • the control chamber is permanently connected to the high-pressure fuel source via a first throttle and can be relieved via a second throttle, which is controlled by a solenoid valve. As soon as the solenoid valve opens the second throttle, the control chamber is relieved and the pressure on the pressure surfaces of the valve member of the injection valve is sufficient to bring the valve member into the open position, so that and Injection can take place. If the second throttle is closed again by the solenoid valve, the valve member is brought back into the closed position due to the pressure increase in the control chamber.
  • the solenoid valve is fastened coaxially to the axis of the valve member of the injection valve on the housing of the fuel injection valve and has a plug connection for supplying the power supply to the electromagnet of the solenoid valve, and a discharge line leading away from the electromagnet is also provided, via which the fuel discharge quantity at the second throttle leads to a relief chamber can drain off.
  • Such fuel injection valves are switched by an electrical control so that high-pressure fuel is supplied to the internal combustion engine at the required time and in the required amount.
  • the electrical control circuit is arranged centrally in the vicinity of the fuel injection valves, one of which is provided for each cylinder of the associated internal combustion engine. This arrangement has the disadvantage that long
  • the fuel injection valve according to the invention with the features of the characterizing part of patent claim 1 has the advantage over that the electrical control circuit in a first circuit part and divided into second circuit parts, which are each provided directly on the fuel injection valve and contain the control of the current supply to the electromagnet.
  • Injectors are distributed and can be optimally derived there for further control of cooling devices.
  • it is avoided to provide long lines with a high current load.
  • the power losses due to voltage drop are reduced and plug-in connections that are subject to high loads are also avoided, since the high currents only appear in the second circuit part and are directly led there to the magnet in the shortest possible line connection.
  • the short lines also have the advantage that interference emissions are reduced, which in particular can also affect the electrical circuit of the control.
  • the first part of the control circuit is reduced to the signal processing components of the circuit, which are no longer disturbed by the effects of the power unit, which is necessary to control the solenoid valve.
  • the drawing shows a longitudinal section through a fuel injection valve for high-pressure injection with an integrated solenoid valve, which additionally has the second circuit part according to the invention integrated.
  • a valve closing member 2 with a conical sealing surface 3, which comes into contact with a conical valve seat 4, from which the injection bores 5 extend.
  • the valve member is then acted upon by a compression spring 7 in the closing direction on the valve seat 4.
  • a pressure chamber 9 is provided, within which a pressure surface 10 pointing in the opening direction of the valve closing member is exposed to the pressure prevailing there, which is supplied to the pressure chamber 9 via a high-pressure feed line 11.
  • the high-pressure feed line is connected to a high-pressure accumulator (not shown further) via a high-pressure connection 12, which discharges transversely to the longitudinal axis of the injection valve. Coaxial to the compression spring 7 also acts on the valve closing member 2, a plunger 14, which in one
  • Insert 15 in housing 1 of the injection valve with its end face 17 delimits a control chamber 18. From the high-pressure connection 12, this has an inlet with a first throttle 19 and an outlet to a relief line 21 with a second throttle 20, which is controlled by a valve member 22 of a solenoid valve 23.
  • the solenoid valve 23 has a spring 24 acting in the closing direction and an armature 25 on the valve member, which is attracted by the electromagnet 26 of the solenoid valve when its coil 27 is excited and thus opens the second throttle 20.
  • the housing 29 of the solenoid valve is fastened to the housing 1 of the injection valve coaxially to the position of the tappet 14 and valve closing member 2 by means of a union nut 30.
  • a housing 32 of a circuit part is now placed on the front side of the housing 29 of the solenoid valve and, as shown schematically in section, contains parts of the control circuit as the second circuit part of the control circuit.
  • the main part of the control circuit in particular the signal processing, takes place here not shown first circuit part of the electrical control, while in the second circuit part within the housing 32 in particular the power components and energy storage are included as a second circuit part.
  • the housing 32 also contains the electrical connection 33 with power supply and signal supply from the first circuit part.
  • the housing 32 includes an interior 34, which receives the circuit parts mentioned, and which is flowed through by the fuel, which through the solenoid valve 23 to
  • Relief of the control room 18 is discharged to the relief line 21.
  • the fuel flows around the electromagnet and the second circuit part downstream of it.
  • an outlet connection 36 is arranged on the housing 32, which leads via the relief line 21 to a fuel reservoir. In this way, the electromagnet and the second circuit part are intensively cooled.
  • the housing 32 is preferably made of plastic or insulating material with additional elastic properties such that the housing can also be clipped tightly to the housing 29 of the solenoid valve. This ensures easy interchangeability.

Abstract

L'invention concerne une soupape d'injection de carburant (1) s'utilisant pour l'injection sous haute pression dans des moteurs à combustion interne à auto-allumage et qui comporte une électrovanne (23) pour assurer la commande de l'injection. Pour actionner cette électrovanne, il est prévu un circuit de commande divisé en une première partie et en secondes parties (31). Ces dernières sont montées sur chaque soupape d'injection individuelle de manière séparée de la première partie du circuit, qui sert à assurer une commande conjointe de plusieurs soupapes d'injection. Le boîtier est fixé par clips sur la soupape d'injection de carburant et du carburant circule à l'intérieur à des fins de refroidissement.
EP96946069A 1996-05-15 1996-12-11 Soupape d'injection de carburant pour injection sous haute pression Expired - Lifetime EP0840848B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19619523 1996-05-15
DE19619523A DE19619523A1 (de) 1996-05-15 1996-05-15 Kraftstoffeinspritzventil für Hochdruckeinspritzung
PCT/DE1996/002378 WO1997043542A1 (fr) 1996-05-15 1996-12-11 Soupape d'injection de carburant pour injection sous haute pression

Publications (2)

Publication Number Publication Date
EP0840848A1 true EP0840848A1 (fr) 1998-05-13
EP0840848B1 EP0840848B1 (fr) 2002-03-27

Family

ID=7794345

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96946069A Expired - Lifetime EP0840848B1 (fr) 1996-05-15 1996-12-11 Soupape d'injection de carburant pour injection sous haute pression

Country Status (9)

Country Link
US (1) US6131540A (fr)
EP (1) EP0840848B1 (fr)
JP (1) JP3737128B2 (fr)
KR (1) KR19990028964A (fr)
CN (1) CN1075870C (fr)
CZ (1) CZ288635B6 (fr)
DE (2) DE19619523A1 (fr)
RU (1) RU2169285C2 (fr)
WO (1) WO1997043542A1 (fr)

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DE19755062A1 (de) 1997-12-11 1999-06-17 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
DE19827267A1 (de) * 1998-06-18 1999-12-23 Bosch Gmbh Robert Kraftstoff-Einspritzventil für Hochdruck-Einspritzung mit verbesserter Steuerung der Kraftstoffzufuhr
DE29814934U1 (de) * 1998-08-20 2000-01-05 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
DE19844742C1 (de) * 1998-09-29 2000-03-09 Siemens Ag Piezoaktorkontaktierung für Einspritzventil
US6367719B1 (en) * 1998-10-22 2002-04-09 Siemens Automotive Corporation Electromechanical valve driver circuit and method
DE19910970A1 (de) 1999-03-12 2000-09-28 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung
DE19921878C2 (de) 1999-05-12 2001-03-15 Daimler Chrysler Ag Kraftstoffeinspritzsystem für eine Brennkraftmaschine
DE19937677C2 (de) * 1999-08-10 2003-06-26 Siemens Ag Einspritzventil mit verbesserter Dichtflächenanordnung
DE19939428A1 (de) * 1999-08-20 2001-03-01 Bosch Gmbh Robert Verfahren und Vorrichtung zur Durchführung einer Kraftstoffeinspritzung
DE19942990A1 (de) * 1999-09-09 2001-03-22 Bosch Gmbh Robert Common-Rail-Injektor
DE19952512A1 (de) * 1999-10-30 2001-05-10 Bosch Gmbh Robert Druckverstärker und Kraftstoffeinspritzsystem mit einem Druckverstärker
JP2001248517A (ja) * 2000-03-01 2001-09-14 Mitsubishi Electric Corp 可変吐出量燃料供給装置
DE10040526A1 (de) 2000-08-18 2002-03-14 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung
ITTO20010539A1 (it) * 2001-06-05 2002-12-05 Fiat Ricerche Iniettore di combustibile per un motore a combustione interna.
DE10134868A1 (de) 2001-07-18 2003-02-13 Bosch Gmbh Robert Kraftstoffinjektor mit Schließdruckkompensation
DE10143423A1 (de) 2001-09-05 2003-05-08 Bosch Gmbh Robert Kraftstoffeinspritzsystem mit hydraulisch von der Zuleitung entkoppeltem Injektor
DE10149514A1 (de) 2001-10-08 2003-04-24 Bosch Gmbh Robert Kraftstoffinjektor mit Kompensationselement für Kraftstoffeinspritzsysteme
US6691677B2 (en) * 2002-02-15 2004-02-17 Cummins Inc. Fuel delivery device and fuel delivery system
DE10206908B4 (de) * 2002-02-19 2010-01-07 Continental Automotive Gmbh Injektor mit verbesserter Anschlussgeometrie
US8613297B2 (en) * 2003-07-29 2013-12-24 Societe Bic Fuel supply systems having operational resistance
DE10351680A1 (de) 2003-11-05 2005-06-09 Robert Bosch Gmbh Ventil für eine Kraftstoffeinspritzpumpe
CN1317501C (zh) * 2004-04-16 2007-05-23 清华大学 一种发动机用电磁阀驱动电路
DE102008001735A1 (de) * 2008-05-14 2009-11-19 Robert Bosch Gmbh Kraftstoff-Injektor sowie Brennkraftmaschine
DE102008002720A1 (de) * 2008-06-27 2009-12-31 Robert Bosch Gmbh Kraftstoffinjektor
DE102008040168A1 (de) * 2008-07-04 2010-01-07 Robert Bosch Gmbh Magnetventil für einen Kraftstoff-Injektor sowie Kraftstoff-Injektor
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GB2547684A (en) * 2016-02-26 2017-08-30 Delphi Int Operations Luxembourg Sarl Fuel injector for a combustion engine
CN106014730B (zh) * 2016-05-19 2018-05-18 哈尔滨工程大学 双油路冷却电磁控制喷油器

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Also Published As

Publication number Publication date
DE59608969D1 (de) 2002-05-02
EP0840848B1 (fr) 2002-03-27
JP3737128B2 (ja) 2006-01-18
RU2169285C2 (ru) 2001-06-20
WO1997043542A1 (fr) 1997-11-20
CZ288635B6 (cs) 2001-08-15
CN1186538A (zh) 1998-07-01
US6131540A (en) 2000-10-17
DE19619523A1 (de) 1997-11-20
CN1075870C (zh) 2001-12-05
KR19990028964A (ko) 1999-04-15
JPH11509604A (ja) 1999-08-24
CZ395197A3 (cs) 1998-06-17

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