EP0404357A2 - Einspritzventil - Google Patents

Einspritzventil Download PDF

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Publication number
EP0404357A2
EP0404357A2 EP90305660A EP90305660A EP0404357A2 EP 0404357 A2 EP0404357 A2 EP 0404357A2 EP 90305660 A EP90305660 A EP 90305660A EP 90305660 A EP90305660 A EP 90305660A EP 0404357 A2 EP0404357 A2 EP 0404357A2
Authority
EP
European Patent Office
Prior art keywords
valve
coil
armature
fuel
energized
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
EP90305660A
Other languages
English (en)
French (fr)
Other versions
EP0404357A3 (de
EP0404357B1 (de
Inventor
Stephen Francis De Nagel
Andrzej Marian Pawlak
Edward Daniel Klomp
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.)
Motors Liquidation Co
Original Assignee
General Motors Corp
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 General Motors Corp filed Critical General Motors Corp
Publication of EP0404357A2 publication Critical patent/EP0404357A2/de
Publication of EP0404357A3 publication Critical patent/EP0404357A3/de
Application granted granted Critical
Publication of EP0404357B1 publication Critical patent/EP0404357B1/de
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
    • F02M51/06—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
    • F02M51/0689—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means and permanent magnets
    • 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
    • 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
    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/08—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series the valves opening in direction of fuel flow
    • 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
    • F02M67/00—Apparatus in which fuel-injection is effected by means of high-pressure gas, the gas carrying the fuel into working cylinders of the engine, e.g. air-injection type
    • F02M67/10—Injectors peculiar thereto, e.g. valve less type
    • F02M67/12—Injectors peculiar thereto, e.g. valve less type having valves

Definitions

  • This invention relates to a solenoid-­actuated valve assembly suitable for use as an injector adapted to deliver a charge of fuel and air directly into a engine combustion chamber as specified in the preamble of claim 1, for example as disclosed in US-A-4,759,335.
  • a solenoid-actuated valve assembly according to the present invention is characterised by the features specified in the characterising portion of claim 1.
  • an injector 10 has a body 12 that receives fuel through an inlet 14 and air through an inlet 16.
  • a ball-type fuel metering valve 18 controls inlet 14; when ball valve 18 is opened, fuel is metered through an orifice 20 to a central passage 22 and a poppet-type charge-­delivery valve 24 which engages a valve seat 26 surrounding the lower end of passage 22; when opened, valve 24 delivers a charge of fuel and air directly into an engine combustion chamber.
  • Ball-valve 18 is biased against a seat 28 in inlet 14 by a coil spring 30 acting through a disc 32 and a push-rod 34.
  • Poppet valve 24 is biased against seat 26 by a diaphragm-type spring 36 acting on a stem 38 of poppet valve 24.
  • Disc 32 is a permanent magnet armature of a coil 40 threaded onto a centre post 42 in body 12.
  • coil 40 When coil 40 is energized with a positive current as shown in Figure 2, coil 40 attracts disc armature 32 against the bias of spring 30, the fuel pressure in inlet 14 lifts ball-valve 18 and push-rod 34, and fuel flows around ball 18 and is metered through orifice 20 to central passage 22.
  • coil 40 When the desired amount of fuel has been metered into passage 22, coil 40 is de-energized, and spring 30 re-engages fuel-metering valve 18 with its seat 28.
  • FIG. 1 Another permanent magnet armature 44 is secured on valve stem 38. Armature 44 has apertures 45 that allow air to flow from inlet 16 to passage 22.
  • coil 40 When coil 40 is energized with a negative current as shown in Figure 3, coil 40 attracts armature 44 against the bias of spring 36, poppet valve 24 is displaced from seat 26, and the fuel-­air charge in passage 22 is delivered into the engine.
  • coil 40 When the charge has been delivered into the engine, coil 40 is de-energized, and spring 36 re-engages charge-delivery valve 24 with its seat 26.
  • Injector 10 is assembled by placing ball-valve 18 and push-rod 34 in body 12, placing armature 32 and spring 30 in body 12, and threading coil 40 on post 42. Coil 40 is screwed on post 42 until it makes contact with armature 32, i.e., until it is bottomed out against armature 32. Coil 40 is then unthreaded, i.e., backed out the proper amount to set a desired air gap between armature 32 and coil 40. A lock-nut 48 is threaded onto post 42 to hold coil 40 in the desired position.
  • An adjustment ring 50 is threaded into body 12 and positioned to set the desired force of spring 30; O-rings 52 and 54 seal ring 50 to body 12 and coil 40, and a set-screw 56 holds ring 50 in the desired position.
  • Poppet valve 24 is inserted into body 12, and armature 44 is threaded onto valve stem 38. Armature 44 is screwed on valve stem 38 until it is bottomed out against coil 40, then it is backed out the proper amount to set a desired air gap between armature 44 and coil 40.
  • a lock-nut 58 is threaded onto stem 38 to hold armature 44 in the desired position.
  • a clamp ring 60 is inserted into body 12, and spring 36 is fitted into body 12 and over stem 38.
  • An adjustment nut 62 is threaded onto stem 38 and is positioned to set the desired force of spring 36; a lock-nut 64 is threaded onto stem 38 to hold adjustment nut 62 in the desired position.
  • a cap 66 is threaded into body 12 to secure spring 36 and close the top of body 12; an O-ring 68 seals cap 66 to body 12.
  • an injector 110 has a multi-piece housing 112 that receives fuel through a fuel-supply tube 114 and air through an air-supply tube 116.
  • a ball-type fuel-metering valve 118 controls fuel flow from tube 114; when ball-valve 118 is opened, fuel is metered through an orifice 120 to a cavity 122.
  • a poppet-type charge-delivery valve 124 engages a valve seat 126 in a nozzle 127 opening from the lower end of cavity 122; when opened, valve 124 delivers a charge of fuel and air directly into the engine.
  • Ball-valve 118 is biased against a seat 128 by a coil spring 130 acting through a disc 132, a push-rod 133 threaded into disc 132, and a pin 134.
  • Poppet valve 124 is biased against seat 126 by a coil spring 136 acting through a disc 137 threaded onto the stem 138 of poppet valve 124.
  • Discs 132 and 137 are permanent magnet armatures of a coil 140 wound on a magnetic core 142.
  • coil 140 When coil 140 is de-energized as shown in Figure 4, armature 132 is attracted toward the top of core 142, engaging ball valve 118 with its seat 128, whilst armature 137 is attracted toward the bottom of core 142, engaging poppet valve 124 with its seat 126.
  • coil 140 When coil 140 is energized with a positive current as shown in Figure 5, coil 140 repels armature 132 against the combined bias of spring 130 and the magnetic attraction between armature 132 and core 142, the fuel pressure in inlet 114 lifts ball-valve 118 and pin 134, and fuel flows around ball 118 and is metered through orifice 120 to cavity 122. When the desired amount of fuel has been metered into cavity 122, coil 140 is de-energized, and the combined bias of spring 130 and the magnetic attraction between armature 132 and core 142 re-engages fuel-metering valve 118 with its seat 128.
  • coil 140 When coil 140 is energized with a negative current as shown in Figure 6, coil 140 repels armature 137 against the combined bias of spring 136 and the magnetic attraction between armature 137 and core 142, poppet valve 124 is displaced from seat 126, and the fuel-air charge in cavity 122 is delivered into the engine. When the charge has been delivered into the engine, coil 140 is de-energized, and the bias of spring 136 and the magnetic attraction between armature 137 and core 142 re-engages charge-delivery valve 124 with its seat 126.
  • Injector 110 is assembled by inserting nozzle 127 in housing 112, an adjusting plate 145 being threaded on the upper end of nozzle 127 and fitting over an anti-rotation pin 147 carried by housing 112.
  • a lock-nut 149 is threaded onto nozzle 127 to hold it in place.
  • a stop 151 is inserted against a shoulder 153 in housing 112, spring 136 is installed, and poppet valve 124 is inserted.
  • Armature 137 is threaded onto valve stem 138 until the top of armature 137 is aligned with a shoulder 155 in housing, and coil 140 is inserted against shoulder 155 and secured with a set-screw 157.
  • Armature 132 is inserted against the top of coil 140, push-rod 133 is adjusted to engage ball-valve 118 against its seat 128, and a lock-nut 164 is threaded on the top of push-rod 133 to maintain the desired adjustment of push-rod 133.
  • Spring 130 is inserted, and a lid 165 is threaded onto housing 112.
  • An upper stop 167 depends from the inside of lid 165, and lid 165 is threaded onto housing 112 until stop 167 first engages armature 132, and then lid 165 is unscrewed sufficiently to establish a desired distance between armature 132 and stop 167.
  • a lock-screw secures lid 165 to housing 112.
  • Lid 165 also carries a screw 169 that is adjusted to establish the desired force exerted by spring 130, and a lock-nut 171 is threaded about screw 169.
  • a split lock-nut 173 is tightened about fuel-supply tube 114 to assure that plenum member 161 remains against shoulder 163.

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)
  • Magnetically Actuated Valves (AREA)
EP90305660A 1989-06-21 1990-05-24 Einspritzventil Expired - Lifetime EP0404357B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US36950989A 1989-06-21 1989-06-21
US369509 1989-06-21

Publications (3)

Publication Number Publication Date
EP0404357A2 true EP0404357A2 (de) 1990-12-27
EP0404357A3 EP0404357A3 (de) 1991-03-13
EP0404357B1 EP0404357B1 (de) 1994-01-12

Family

ID=23455781

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90305660A Expired - Lifetime EP0404357B1 (de) 1989-06-21 1990-05-24 Einspritzventil

Country Status (4)

Country Link
EP (1) EP0404357B1 (de)
JP (1) JPH06103015B2 (de)
AU (1) AU618901B2 (de)
DE (1) DE69005919T2 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997002425A1 (en) 1995-06-30 1997-01-23 Orbital Engine Company (Australia) Pty. Limited Fuel injection apparatus
EP1174604A3 (de) * 2000-07-19 2003-03-26 Nissan Motor Company, Limited Brennkraftmaschine mit Selbstzündung und Brennstoffzuführeinrichtung
WO2005045235A1 (en) * 2003-10-31 2005-05-19 Synerject, Llc Air assist fuel injector with a one piece leg/seat
US7066141B2 (en) 2001-08-24 2006-06-27 Caterpillar Inc. Linear control valve for controlling a fuel injector and engine compression release brake actuator and engine using same
US7159801B2 (en) 2004-12-13 2007-01-09 Synerject, Llc Fuel injector assembly and poppet
EP3009656A1 (de) * 2014-10-15 2016-04-20 Continental Automotive GmbH Flüssigkeitseinspritzventil für einen Verbrennungsmotor und Verfahren zum Betrieb davon
EP3034853A1 (de) * 2014-12-15 2016-06-22 Continental Automotive GmbH Spulenanordnung und Einspritzventil für Flüssigkeit

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03217653A (ja) * 1990-01-24 1991-09-25 Nippondenso Co Ltd 内燃機関の燃料噴射装置
EP2568155B1 (de) * 2011-09-09 2018-11-14 Continental Automotive GmbH Ventilanordnung und Einspritzventil

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4020803A (en) * 1975-10-30 1977-05-03 The Bendix Corporation Combined fuel injection and intake valve for electronic fuel injection engine systems
JPS57148052A (en) * 1981-03-09 1982-09-13 Aisin Seiki Co Ltd Fuel injection feed control system
JPS58196378A (ja) * 1982-05-12 1983-11-15 Nippon Denso Co Ltd 電磁弁装置
PH25880A (en) * 1983-08-05 1991-12-02 Orbital Eng Pty Fuel injection method and apparatus

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997002425A1 (en) 1995-06-30 1997-01-23 Orbital Engine Company (Australia) Pty. Limited Fuel injection apparatus
EP1174604A3 (de) * 2000-07-19 2003-03-26 Nissan Motor Company, Limited Brennkraftmaschine mit Selbstzündung und Brennstoffzuführeinrichtung
US7066141B2 (en) 2001-08-24 2006-06-27 Caterpillar Inc. Linear control valve for controlling a fuel injector and engine compression release brake actuator and engine using same
WO2005045235A1 (en) * 2003-10-31 2005-05-19 Synerject, Llc Air assist fuel injector with a one piece leg/seat
US7182281B2 (en) 2003-10-31 2007-02-27 Synerject, Llc Air assist fuel injector with a one piece leg/seat
US7159801B2 (en) 2004-12-13 2007-01-09 Synerject, Llc Fuel injector assembly and poppet
EP3009656A1 (de) * 2014-10-15 2016-04-20 Continental Automotive GmbH Flüssigkeitseinspritzventil für einen Verbrennungsmotor und Verfahren zum Betrieb davon
EP3034853A1 (de) * 2014-12-15 2016-06-22 Continental Automotive GmbH Spulenanordnung und Einspritzventil für Flüssigkeit

Also Published As

Publication number Publication date
DE69005919D1 (de) 1994-02-24
DE69005919T2 (de) 1994-05-05
EP0404357A3 (de) 1991-03-13
EP0404357B1 (de) 1994-01-12
JPH0343662A (ja) 1991-02-25
AU5680690A (en) 1991-01-03
JPH06103015B2 (ja) 1994-12-14
AU618901B2 (en) 1992-01-09

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