EP0222997B1 - Elektromagnetisch betätigbares Kraftstoffeinspritzventil - Google Patents

Elektromagnetisch betätigbares Kraftstoffeinspritzventil Download PDF

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Publication number
EP0222997B1
EP0222997B1 EP86112189A EP86112189A EP0222997B1 EP 0222997 B1 EP0222997 B1 EP 0222997B1 EP 86112189 A EP86112189 A EP 86112189A EP 86112189 A EP86112189 A EP 86112189A EP 0222997 B1 EP0222997 B1 EP 0222997B1
Authority
EP
European Patent Office
Prior art keywords
fuel
core
injection valve
valve according
magnetic injection
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
Application number
EP86112189A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0222997A1 (de
Inventor
Waldemar Ing. Hans
Wilhelm Dipl.-Ing. Kind
Heinrich Dipl.-Phys. Knapp
Wolfgang Ing. Kramer
Rudolf Dr.-Ing. Sauer
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 EP0222997A1 publication Critical patent/EP0222997A1/de
Application granted granted Critical
Publication of EP0222997B1 publication Critical patent/EP0222997B1/de
Expired 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
    • F02M53/00—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
    • F02M53/04—Injectors with heating, cooling, or thermally-insulating 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
    • 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
    • F02M51/0675—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 the valve body having cylindrical guiding or metering portions, e.g. with fuel passages
    • F02M51/0678—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 the valve body having cylindrical guiding or metering portions, e.g. with fuel passages all portions having fuel passages, e.g. flats, grooves, diameter reductions
    • 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

Definitions

  • the invention relates to an electromagnetically actuated fuel injection valve according to the preamble of the main claim.
  • a fuel injection valve is already known in which the fuel flowing to the valve seat first flows around the solenoid coil, on the one hand to cool it and on the other hand to carry vapor bubbles which may occur during such a flow through the fuel injection valve into a return flow line (GB-A-2 116 255).
  • the magnetic injection valve according to the invention with the characterizing features of the main claim has the advantage of injecting a largely vapor-bubble-free, ignitable fuel into the intake tract of an internal combustion engine even in the first decisive seconds after the hot start. This is achieved by a large, heat-absorbing surface of the interior of the magnetic injector, which is flushed with fuel. By redirecting the fuel flow between the connecting piece and the valve seat, the amount of thick juice stored in the valve at all times (meaning the gasoline without the volatile components) is increased, thus ensuring the availability of this important fuel for the first seconds after the hot start.
  • 1 denotes, in a first approximation, a pot-shaped valve housing, in which a magnet coil 3 is arranged on a coil carrier 2.
  • the magnet coil 3 has a contact lug 4, which leads out of the magnet coil 3 and the coil carrier 2.
  • the coil carrier 2 of the magnet coil 3 is seated in an interior 6 of the valve housing 1 on a core 7, which partly projects into the interior 6 of the valve housing 1 and closes the interior 6 with a flange 8.
  • the flange 8 is seated on the one hand on a shoulder 9 of the valve housing 1 and on the other hand is partially surrounded by a flange 10 of the valve housing 1 and pressed against the paragraph 9 by this flange 10.
  • the core 7 continues on the side of the flange 8 facing away from the magnet coil 3 in a connecting piece 11. Facing away from the flange 8 of the core 7, the interior 6 of the valve housing 1 is delimited by a magnetic flux guide shoulder 25 of the valve housing 1, which extends radially inwards and has a through hole 26 in alignment with the core 7.
  • the coil carrier 2 is seated on the magnetic flux guide paragraph 25. Aligned to the core 7, a ring-shaped armature 27 projects into the through bore 26 of the magnetic flux guide shoulder with little play.
  • the armature 27 has a first blind bore 23 aligned with the core 7 and a second blind bore 24 facing away from the core 7 and coaxial with the first blind bore 23 and the valve axis.
  • the first and second blind holes 23, 24 are connected to one another by a coaxial connecting hole 29 of smaller diameter than the diameter of the first and second blind holes 23, 24.
  • the second blind bore 24 of the armature 27 receives the head 30 of a nozzle needle 31 in a non-positive or positive manner.
  • the nozzle needle 31 extends away from the armature 27 into a guide bore 33 of a nozzle body 34 which is partially inserted into a holding bore 35 of the valve housing 1 and is pressed by a flange 36 formed on the valve housing 1 against a stop plate 37 which is attached to one by the magnetic flux guide 25 formed inner shoulder 38 of the valve housing 1 abuts.
  • the nozzle needle 31 penetrates a through opening 41 in the stop plate 37 with a constriction section 40 and projects out of an injection opening 43 of the nozzle body 34 with a needle pin 42.
  • a conical valve seat surface 44 is formed, which cooperates with a conical sealing section 45 on the nozzle needle 31.
  • a recess 46 is provided between the passage opening 41 and the circumference of the stop plate 37, the clear width of which is larger than the diameter of the constricted section 40 of the nozzle needle 31.
  • the constriction section 40 is adjoined by a stop shoulder 48 of the nozzle needle 31, by means of which the nozzle needle rests on the stop plate 37 when the armature 27 is attracted when the solenoid coil is energized, the sealing section 45 having lifted off the valve seat 44 and fuel being sprayed off via the injection opening 43 can.
  • a first guide section 49 of the nozzle needle 31 adjoins the stop shoulder 48, to which a cylinder section 50 and a second guide section 51 adjoin.
  • the guide sections 49 and 51 give the nozzle needle 31 guidance in the guide bore 33 and are designed, for example, as a square to ensure a flow around the nozzle needle 31 up to the sealing section 45.
  • blind hole 55 which, aligned coaxially with the core 7, opens towards it.
  • an obliquely mounted bypass bore 56 opens, which on the other hand opens to the fuel chamber between the head 30 and the stop shoulder 48 of the nozzle needle 31 and wel che allows backflow of fuel to the fuel backflow line and flushing out unwanted vapor bubbles.
  • the diameter of the blind hole 55 is dimensioned such that a compression spring 57 can be supported on the end face of the head 30 of the valve needle 31 formed between the blind hole 55 and the connecting bore 29 of the armature 27, which is supported on the other hand on an end face of a bushing 60 fastened in the connecting piece and which strives to act on the valve needle 31 in the direction of the valve seat surface 44 and thus to close the valve.
  • the attachment of the socket 60 in the connector 11 is such. B. accomplished by a pronounced on the outer edge of the socket 60 tooth profile with longitudinal teeth.
  • a seal between the socket 60 and the connection piece 11 or core 7 is found only at the end of the socket 60 facing the armature 27, otherwise a flow in an annular gap 62 is possible over the entire length of the socket 60 between the socket 60 and the connection piece 11.
  • the socket 60 still ends within the connecting piece 11, which in turn is closed off on its end face by a sieve 61 designed as a cap.
  • the valve housing 1 in the area of the flange 10 and the connecting piece 11 over part of its length are surrounded by a plastic ring 65.
  • This has, inter alia, a plug 66 which receives a plug connection 67 connected to the contact lug 4.
  • an annular fuel guiding body 70 adjoins the plastic ring 65, likewise enclosing the connecting piece 11.
  • the fuel guide body 70 seals against the outer jacket of the connecting piece 11, while in the opposite direction, starting from an annular collecting channel 71 incorporated in the fuel guide body 70, a cylindrical gap 72 remains between the fuel guide body 70 and the connecting piece 11.
  • At least one first connecting channel 73 leads from the collecting channel 71 in the direction facing the armature 27 to likewise at least one sleeve 74, which runs parallel to the connecting piece and serves for the fuel supply.
  • This sleeve 74 sits on the one hand in a first receiving bore 75 of the fuel guide body 70, which is connected to the first Connection channel 73 is connected or is identical to it, and on the other hand in a similar, second receiving bore 76 in the flange 8 of the core 7.
  • the second receiving bore 76 is located in a second connecting channel 77, which preferably runs coaxially therewith, in this way a connection producing the magnetic coil 3 accommodating interior space 6.
  • the sleeve 74 is also enclosed by the plastic ring 65.
  • the annular gap 72 of the fuel guide body 70 is closed off by a fuel filter 80.
  • This fuel filter 80 is seated, with a filter holder 81 partially encompassing a rim 82 of the fuel guide body 70, with this filter holder 81 on the outer jacket of the connecting piece 11.
  • the flow through the fuel filter 80 is radial.
  • an annular groove 83 is machined, into which a first sealing ring 84 is inserted, which serves to seal the fuel guide body 70 against a connecting flange 85 which partially surrounds it.
  • a supply element 90 The supply of the magnetic injection valve with fuel and the return of excess fuel is ensured by a supply element 90.
  • This supply element 90 can be designed, for example, as a metal profile with an inlet tract 91 and a return tract 92, the inlet tract 91 having an inlet opening 93 and the return tract having a return opening 94.
  • the inlet opening 93 coaxially surrounds the return opening 94 in such a way that the inlet opening 93 is sealingly connected to the connecting flange 85, while the return opening 94 radially surrounds the connecting piece 11 at its end facing away from the armature 27.
  • a second sealing ring 95 can be located between the return opening 94 and the connecting piece 11 for sealing.
  • the coil carrier 2 accommodated in the interior 6 of the valve housing 1 and accommodating the magnet coil 3 has a smaller outside diameter than the diameter of the interior 6, so that fuel is washed around the magnet coil 4 or coil carrier 2 on its outer jacket.
  • the supply of fuel into the interior 6 of the valve housing 1 takes place in the manner already described above via the second connecting channel 77 in the flange 8.
  • radially running channels 96 In each flat side of the coil carrier 2, which, facing the magnetic flux guide shoulder 25, faces the nozzle body 34, is located radially running channels 96, which continue in the area of the inner bore of the coil carrier 2 as axial channels 97 over a certain length of the coil carrier 2.
  • Openings 98 made radially in the coil carrier 2 connect these axial channels 97 to an annular space 99 formed between the coil carrier 2 and the outer jacket of the core 7.
  • the individual radially extending channels 96 and the axial channels 97 can each be connected to one another via transverse channels.
  • the annular space 99 is in turn connected to the annular gap 62 between the connecting piece 11 and the socket 60 by at least one outlet opening 100.
  • the flow through the injection valve takes place after flowing through the fuel filter 80 via the annular gap 72 and through the sleeve 74 into the interior 6 and further via the radial channels 96 and the axial channels 97 via the openings 98 into the annular space 99 and via the outlet openings 100 in the between the connecting pieces 11 and bushing 60 are annular gap 62.
  • the fuel continues to flow in the direction facing away from the valve, is guided around at the end of bushing 60 and its end face and then flows through bushing 60 to armature 27.
EP86112189A 1985-10-02 1986-09-03 Elektromagnetisch betätigbares Kraftstoffeinspritzventil Expired EP0222997B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853535124 DE3535124A1 (de) 1985-10-02 1985-10-02 Elektromagnetisch betaetigbares kraftstoffeinspritzventil
DE3535124 1985-10-02

Publications (2)

Publication Number Publication Date
EP0222997A1 EP0222997A1 (de) 1987-05-27
EP0222997B1 true EP0222997B1 (de) 1988-12-07

Family

ID=6282543

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86112189A Expired EP0222997B1 (de) 1985-10-02 1986-09-03 Elektromagnetisch betätigbares Kraftstoffeinspritzventil

Country Status (4)

Country Link
US (1) US4700891A (ja)
EP (1) EP0222997B1 (ja)
JP (1) JPS6287662A (ja)
DE (2) DE3535124A1 (ja)

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DE3617255A1 (de) * 1986-05-22 1987-11-26 Bayerische Motoren Werke Ag Vorrichtung zum dosierten zufuehren eines brennstoffes, insbesondere in den brennraum einer brennkraftmaschine
DE3703615A1 (de) * 1987-02-06 1988-08-18 Bosch Gmbh Robert Kraftstoffeinspritzventil
FR2615249B1 (fr) * 1987-05-12 1989-08-18 Renault Injecteur pour moteur a allumage commande et injection directe
IT1211159B (it) * 1987-06-09 1989-09-29 Weber Srl Valvola per la dosatura e la polverizzazione di carburante per un dispositivo ad iniezione del carburante in un motore acombustione interna
DE3736198A1 (de) * 1987-10-26 1989-05-18 Voest Alpine Automotive Kraftstoffeinspritzduese fuer brennkraftmaschinen
US5104043A (en) * 1990-01-19 1992-04-14 Butterworth Jetting Systems, Inc. Magnetic speed control for self-propelled swivel
DE4003228A1 (de) * 1990-02-03 1991-08-22 Bosch Gmbh Robert Elektromagnetisch betaetigbares ventil
DE4109868A1 (de) * 1991-03-26 1992-10-01 Bosch Gmbh Robert Einstellbuchse fuer ein elektromagnetisch betaetigbares ventil und verfahren zur herstellung
US5291869A (en) * 1993-05-28 1994-03-08 Bennett David E Liquified petroleum gas fuel supply system
US5325838A (en) * 1993-05-28 1994-07-05 Bennett David E Liquified petroleum gas fuel injector
DE4325842A1 (de) * 1993-07-31 1995-02-02 Bosch Gmbh Robert Brennstoffeinspritzventil
US5356079A (en) * 1993-11-23 1994-10-18 Siemens Automotive L.P. Fuel injector snap-lock filter-retainer
DE4421881A1 (de) * 1994-06-23 1996-01-04 Bosch Gmbh Robert Ventilnadel
US5494224A (en) * 1994-08-18 1996-02-27 Siemens Automotive L.P. Flow area armature for fuel injector
JP3546490B2 (ja) * 1994-10-03 2004-07-28 株式会社デンソー 電磁式燃料噴射弁
JPH08128373A (ja) * 1994-11-04 1996-05-21 Toyota Motor Corp 内燃機関の燃料噴射弁
AU7377798A (en) 1997-05-13 1998-12-08 Bennett Technologies, L.L.C. Liquefied petroleum gas fuel system and method
DE19936669A1 (de) * 1999-08-04 2001-02-22 Bosch Gmbh Robert Common-Rail-Injektor
US6227173B1 (en) 1999-06-07 2001-05-08 Bi-Phase Technologies, L.L.C. Fuel line arrangement for LPG system, and method
DE10154642C1 (de) * 2001-11-07 2003-07-17 Siemens Ag Auswerteschaltung für einen induktiven Sensor
DE10252827B3 (de) * 2002-11-13 2004-08-05 Siemens Ag Schaltungsanordnung zur schnellen Ansteuerung insbesondere induktiver Lasten
US6919651B2 (en) * 2002-11-26 2005-07-19 Siemens Aktiengesellschaft Circuit arrangement for high-speed switching of inductive loads
US7628137B1 (en) 2008-01-07 2009-12-08 Mcalister Roy E Multifuel storage, metering and ignition system
WO2011028331A2 (en) 2009-08-27 2011-03-10 Mcalister Technologies, Llc Shaping a fuel charge in a combustion chamber with multiple drivers and/or ionization control
US8387599B2 (en) 2008-01-07 2013-03-05 Mcalister Technologies, Llc Methods and systems for reducing the formation of oxides of nitrogen during combustion in engines
US8365700B2 (en) 2008-01-07 2013-02-05 Mcalister Technologies, Llc Shaping a fuel charge in a combustion chamber with multiple drivers and/or ionization control
US8413634B2 (en) 2008-01-07 2013-04-09 Mcalister Technologies, Llc Integrated fuel injector igniters with conductive cable assemblies
US8074625B2 (en) 2008-01-07 2011-12-13 Mcalister Technologies, Llc Fuel injector actuator assemblies and associated methods of use and manufacture
US8561598B2 (en) * 2008-01-07 2013-10-22 Mcalister Technologies, Llc Method and system of thermochemical regeneration to provide oxygenated fuel, for example, with fuel-cooled fuel injectors
WO2011025512A1 (en) 2009-08-27 2011-03-03 Mcallister Technologies, Llc Integrated fuel injectors and igniters and associated methods of use and manufacture
US20100019071A1 (en) * 2008-07-22 2010-01-28 Perry Robert B Fuel injector armature guide
US8201754B2 (en) * 2009-12-03 2012-06-19 Caterpillar Inc. Fluid injector with thermal load control
CA2783185C (en) * 2009-12-07 2014-09-23 Mcalister Technologies, Llc Adaptive control system for fuel injectors and igniters
US20110297753A1 (en) 2010-12-06 2011-12-08 Mcalister Roy E Integrated fuel injector igniters configured to inject multiple fuels and/or coolants and associated methods of use and manufacture
CA2788577C (en) 2010-02-13 2014-04-01 Mcalister Technologies, Llc Fuel injector assemblies having acoustical force modifiers and associated methods of use and manufacture
US8297265B2 (en) 2010-02-13 2012-10-30 Mcalister Technologies, Llc Methods and systems for adaptively cooling combustion chambers in engines
JP5427296B2 (ja) * 2010-08-06 2014-02-26 川崎重工業株式会社 ガス用調圧弁
US8528519B2 (en) 2010-10-27 2013-09-10 Mcalister Technologies, Llc Integrated fuel injector igniters suitable for large engine applications and associated methods of use and manufacture
US8091528B2 (en) 2010-12-06 2012-01-10 Mcalister Technologies, Llc Integrated fuel injector igniters having force generating assemblies for injecting and igniting fuel and associated methods of use and manufacture
WO2012112615A1 (en) 2011-02-14 2012-08-23 Mcalister Technologies, Llc Torque multiplier engines
US8683988B2 (en) 2011-08-12 2014-04-01 Mcalister Technologies, Llc Systems and methods for improved engine cooling and energy generation
US8919377B2 (en) 2011-08-12 2014-12-30 Mcalister Technologies, Llc Acoustically actuated flow valve assembly including a plurality of reed valves
US9115325B2 (en) 2012-11-12 2015-08-25 Mcalister Technologies, Llc Systems and methods for utilizing alcohol fuels
CN114263553B (zh) * 2021-12-21 2022-06-21 南岳电控（衡阳）工业技术股份有限公司 用于空气辅助缸内直喷系统且采用电磁控制的燃料喷嘴

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US4116389A (en) * 1976-12-27 1978-09-26 Essex Group, Inc. Electromagnetic fuel injection valve
DE3207917A1 (de) * 1982-03-05 1983-09-15 Robert Bosch Gmbh, 7000 Stuttgart Elektromagnetisch betaetigbares ventil
JPS60119364A (ja) * 1983-12-02 1985-06-26 Hitachi Ltd 電磁式燃料噴射弁

Also Published As

Publication number Publication date
DE3535124A1 (de) 1987-04-02
DE3661371D1 (en) 1989-01-12
EP0222997A1 (de) 1987-05-27
US4700891A (en) 1987-10-20
JPS6287662A (ja) 1987-04-22

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