US3761023A - Electromagnetic injectors for internal combustion engines - Google Patents

Electromagnetic injectors for internal combustion engines Download PDF

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Publication number
US3761023A
US3761023A US00180602A US3761023DA US3761023A US 3761023 A US3761023 A US 3761023A US 00180602 A US00180602 A US 00180602A US 3761023D A US3761023D A US 3761023DA US 3761023 A US3761023 A US 3761023A
Authority
US
United States
Prior art keywords
injector
armature
fuel
stationary
electromagnetic
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
US00180602A
Other languages
English (en)
Inventor
H Gueret
P Advenier
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.)
Societe des Procedes Modernes dInjection SOPROMI
Original Assignee
Societe des Procedes Modernes dInjection SOPROMI
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 Societe des Procedes Modernes dInjection SOPROMI filed Critical Societe des Procedes Modernes dInjection SOPROMI
Application granted granted Critical
Publication of US3761023A publication Critical patent/US3761023A/en
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
    • F02M51/0614—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature
    • 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
    • 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
    • F02M51/061—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
    • F02M51/0657—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 the body being hollow and its interior communicating with the fuel flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/12—Other methods of operation
    • F02B2075/125—Direct injection in the combustion chamber for spark ignition engines, i.e. not in pre-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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/50—Arrangements of springs for valves used in fuel injectors or fuel injection pumps
    • F02M2200/507—Adjusting spring tension by screwing spring seats
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the stationary armature is slidingly carried inside the upper part of the injector body and is separated from the lower part by a washer or shim defining the initial gap and by an amagnetic tubular stay, the contact between the stationary armature, the shim, the tubular stay and the lower part of the injector body being ensured by a spring inserted between the stationary an'nature and the bottom of the upper part, while the fluidtight connection between said upper and lower parts is provided by two flat highly polished surfaces fastened together by a nut bearing on a shoulder of the lower part and screwed over a threaded section of the upper part, which section bears against said shoulder while the injector is freely fitted through its upper part and nut by means of a flange without any stressing of the magnetic circuit, the shim, the stay and the lower part.
  • Recesses 20 are provided between the magnetic arms 3c, 3d, and 3f underneath the winding 4, said recesses 20 being interconnected by grooves 19 formed in the casting along the sides of the stationary armature (FIG. 2) and by grooves 3b cut so as to ensure a connection between the axial bore 30 and the empty spaces thus formed at 20. There is thus obtained a rectangle defined by the grooves 19 and the recesses 20, the size of said rectangle being selected in accordance with the pressure of the fuel.
  • the cooperating surfaces of the stationary and movable armatures are held apart at the end of the rise of the needle valve by a film of fuel under pressure forming a hydraulic abutment, said fuel entering a central port in the stationary armature and escaping solely along the edges of the movable armature in order to reach the injection port, said hydraulic abutment defining thus the residual gap and, consequently, the rise of the needle valve, by an amount corresponding to the difference between the initial and residual gaps.
  • z the stationary armature is constituted by a pack of superposed ferromagnetic laminae the ends of the fined during said assembly by means of a shim inserted between the stay 5 and the upper part 2.
  • Toreshaped packings 9 are inserted in corresponding grooves underneath the stay and over part 2 and the casing is set in the manner already described, however with sufficient care, so as to avoid an excessive compression of the two parts of the injector body anc chiefly of the shim l0 and stay 5, an excessive compression of said shim and stay exerting a detrimential action on the size of the initial gap, and consequently on the rise of the needle valve.
  • Theupper part2 rests on a shoulder 6'f of the lower part 6' and is held fast over said shoulder by the nut 21 so that said shoulder 6f is clamped between the operative surface of thenut 21 and the cylindrical outwardly threaded extension 2'b of the upper part 2'.
  • the movable armature 7' includes a blade 7'a and a needle valve constituted by a cylindrical guiding tube 7 'b and its solid extension 7'i terminating with a frustoconical fluidtight seating section 7 'g and a stud 7'h.
  • An electromagnetic fuel injector as in claim 7 furfurther comprising a strap engaging Said nut for mount ther comprising a flange formed on the one of said ing Said injector englneparts of said body and a threaded section on the other

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
US00180602A 1970-09-25 1971-09-15 Electromagnetic injectors for internal combustion engines Expired - Lifetime US3761023A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7034755A FR2106831A5 (oth) 1970-09-25 1970-09-25

Publications (1)

Publication Number Publication Date
US3761023A true US3761023A (en) 1973-09-25

Family

ID=9061851

Family Applications (1)

Application Number Title Priority Date Filing Date
US00180602A Expired - Lifetime US3761023A (en) 1970-09-25 1971-09-15 Electromagnetic injectors for internal combustion engines

Country Status (7)

Country Link
US (1) US3761023A (oth)
AU (1) AU448163B2 (oth)
DE (1) DE2146663A1 (oth)
FR (1) FR2106831A5 (oth)
GB (1) GB1364565A (oth)
SE (1) SE377165B (oth)
ZA (1) ZA715178B (oth)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0806565A1 (en) * 1996-05-10 1997-11-12 Keihin Seiki Mfg. Co., Ltd Electromagnetic fuel injection valve
US20070235008A1 (en) * 2004-07-20 2007-10-11 Boris Feinleib Needle-Spring Locking Device for Pump-Injector (Injector) for Internal Combustion Engines

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT213013Z2 (it) * 1987-11-24 1989-10-13 Weber Srl Bobina di eccitazione per una valvola di dosatura e di polverizzazione del carburante per un dispositivo ad iniezione del carburante in un motore a combustione interna
IT1211626B (it) * 1987-12-24 1989-11-03 Weber Srl Iniettore elettromagnetico di combustibile di tipo perfezionato
WO1993003271A1 (en) * 1991-07-29 1993-02-18 Siemens Automotive L.P. Method for attenuating audible noise from a solenoid-operated fuel injector
US5975437A (en) * 1997-11-03 1999-11-02 Caterpillar, Inc. Fuel injector solenoid utilizing an apertured armature

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1664612A (en) * 1925-11-04 1928-04-03 Louis O French Fuel-control valve
US3001757A (en) * 1958-04-09 1961-09-26 Chrysler Corp Magnetic fuel injection nozzle
US3567135A (en) * 1968-01-30 1971-03-02 Bosch Gmbh Robert Electromagnetically operated fuel injection valve
US3592392A (en) * 1968-06-11 1971-07-13 Sopromi Soc Proc Modern Inject Electromagnetic fuel injection spray valve

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1664612A (en) * 1925-11-04 1928-04-03 Louis O French Fuel-control valve
US3001757A (en) * 1958-04-09 1961-09-26 Chrysler Corp Magnetic fuel injection nozzle
US3567135A (en) * 1968-01-30 1971-03-02 Bosch Gmbh Robert Electromagnetically operated fuel injection valve
US3592392A (en) * 1968-06-11 1971-07-13 Sopromi Soc Proc Modern Inject Electromagnetic fuel injection spray valve

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0806565A1 (en) * 1996-05-10 1997-11-12 Keihin Seiki Mfg. Co., Ltd Electromagnetic fuel injection valve
US20070235008A1 (en) * 2004-07-20 2007-10-11 Boris Feinleib Needle-Spring Locking Device for Pump-Injector (Injector) for Internal Combustion Engines
US7467750B2 (en) * 2004-07-20 2008-12-23 Mazrek Ltd. Needle-spring locking device for pump-injector (injector) for internal combustion engines

Also Published As

Publication number Publication date
SE377165B (oth) 1975-06-23
GB1364565A (en) 1974-08-21
AU3180671A (en) 1973-02-01
AU448163B2 (en) 1974-05-09
ZA715178B (en) 1972-04-26
DE2146663A1 (de) 1972-05-10
FR2106831A5 (oth) 1972-05-05

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