US3646914A - Fuel feed devices for internal combustion engines - Google Patents

Fuel feed devices for internal combustion engines Download PDF

Info

Publication number
US3646914A
US3646914A US12581A US3646914DA US3646914A US 3646914 A US3646914 A US 3646914A US 12581 A US12581 A US 12581A US 3646914D A US3646914D A US 3646914DA US 3646914 A US3646914 A US 3646914A
Authority
US
United States
Prior art keywords
throttle member
electromagnet
induction pipe
zone
injection device
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
US12581A
Other languages
English (en)
Inventor
Andre Louis Mennesson
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 Industrielle de Brevets et dEtudes SIBE
Original Assignee
Societe Industrielle de Brevets et dEtudes SIBE
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 Industrielle de Brevets et dEtudes SIBE filed Critical Societe Industrielle de Brevets et dEtudes SIBE
Application granted granted Critical
Publication of US3646914A publication Critical patent/US3646914A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F02M51/0625—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
    • F02M51/0667—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 acting as a valve or having a short 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
    • 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
    • F02M51/08—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
    • F02M53/00—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
    • F02M53/04—Injectors with heating, cooling, or thermally-insulating means
    • F02M53/08—Injectors with heating, cooling, or thermally-insulating means with air cooling
    • 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

Definitions

  • the invention relates to injection devices, for internal combustion engines, which comprise, on the one hand, a source of liquid fuel under pressure connected to an injection orifice communicating with a zone of the induction pipe situated downstream of said pipe and, on the other hand, a metering system adapted, by acting on the energization of an electromagnet which actuates a valve cooperating with the injection orifice, to modify the flow of fuel injected according to the flow of air passing in said pipe, the aforesaid injection orifice being aligned with an auxiliary orifice which opens into the aforesaid zone of the induction pipe and the space included between the two orifices belonging to a chamber aerated at a substantially constant pressure.
  • the above-defined injection device is characterized in that the circuit leading air to the aforesaid chamber passes close to the electromagnet, so that air displaced in said conduit towards the aforesaid zone of the induction pipe contributes to the cooling of the electromagnet.
  • FIG. I shows, partly in elevation and partly in axial cross section, one embodiment of an injection device according t the invention.
  • FIG. 2 shows, on a larger scale and in cross section, the essential elements of the embodiment shown in FIG. I.
  • injection device As regards the injection device as a whole, it is advantageously constructed according to the disclosure of the first above-mentioned patent application by including in it:
  • a source of liquid fuel under pressure (not shown) connected, by a pipe 4, to an injection orifice 5 communicating with a zone A of the pipe I situated downstream of the main throttle member 2,
  • a metering system (not shown) sensitive to the position of the auxiliary throttle member and adapted to regulate the flow of fuel to be injected through the orifice 5 in such manner that the richness of the air-fuel mixture is substantially constant, at least for certain operating conditions of the engine.
  • the injection orifice 5 is aligned with an auxiliary orifice 6 which opens into the zone A of the pipe I, the space included between the two orifices 5 and 6 belonging to an aerating chamber 7 where the pressure is independent of that existing in the zone A, so that the flow of fuel through the orifice 5 is itself rendered independent of this latter pressure or of its variations.
  • the section of the orifice 6 is preferably greater than that of the orifice 5.
  • the chamber 7 is connected to the atmosphere in the manner specified below by means of a tube 8 of which the cross section is distinctly greater than that of orifice 6.
  • the auxiliary throttle member 3 is constituted by a plug capable of being transversely displaced with respect to the pipe I to be able to more or less close it.
  • This plug is actuated by a pneumatic device comprising a diaphragm 9 separating two chambers 10 and II from one another.
  • An orifice 12 passing through the wall of the plug 3, places the chamber I0 in communication with the section B of the pipe I which is included between the throttle members 2 and 3.
  • a spring I3 tends to push back the plug inside the pipe I against the action of the reduced pressure which is transmitted into chamber I0 through the orifice 12.
  • Chamber II is' placed at atmospheric pressure through a passage 14 which opens, preferably into the inlet of pipe 1 between an air filter (not shown) and the plug 3.
  • the latter bears a central shank 15 which slides in a guide 16 and projects outside to act on the said metering system.
  • aforesaid metering system it is advantageously made to include a member (not shown) driven in continuous rotary movement and capable, by acting on the energization of an electromagnet 17 which actuates a valve 18 cooperating with a seat I9 situated upstream of the injection orifice 5, to determine, over a fraction only of each of its turns, the opening of this valve, and the system is arranged in such manner that it increases the said fraction in proportion as the opening of the auxiliary throttle member 3 increases (that is to say in the example shown, the lifting of the shank I5) and vice versa.
  • Various solutions to constitute this metering system have been described in the first patent mentioned above as well as in the US. Pat. application Ser. No. 10,420 filed by applicant on Feb. 1 1, I970.
  • this metering system adapts the fuel flow to the airflow which passes in the pipe I from one side to the other of the auxiliary throttle member 3.
  • Thetube 8 may be connected either, as shown in FIG. I, to the section B of pipe 1, at least for the positions of the throttle member 3 corresponding to slight airflows, or to the air inlet of this pipe (that is to say upstream ofthe throttle member 3), or again directly to the atmosphere.
  • the circuit leading the air to the aeration chamber 7 passes close to the electromagnet 17, so that the air displaced in this circuit towards the zone A of the induction pipe 1 contributes to the cooling of the electromagnet.
  • the injection device comprises a main injector body 20 which receives, at one of its ends, a ferrule on which the pipe 4 is fitted.
  • the ferrule 21 is extended by an inner passage 22 which ends at the valve 18.
  • the latter possesses externally a cylindrical guide surface adapted to slide in contact with an axial tubular guide 29 and it is internally hollow, at least one orifice 30 passing through the wall of the valve to enable the fuel coming from the passage 22 to pass from the inside to the outside of the valve.
  • the latter comprises, at its downstream end, a conical surface 23 which cooperates with the seat 19.
  • the electromagnet 17 is of annular shape and it surrounds the passage 22 at least in part and the valve 18. Its winding is supplied with electric current through the male contacts 24 on which are engaged female contacts (not shown) borne by a connector 25 of plastics material extended by a lead 26. This latter ends at an intermittent source of electric current belonging to the above-said metering system.
  • the supply of the electromagnet 17 has the effect of raising the valve 18 until it comes into contact with a stop 27.
  • a spring 28, denoted by mixed line pushes back the valve 18 on the seat 19, thus interrupting the fuel flow which had been established on the energizing of the electromagnet.
  • the electromagnet 17 has an outer diameter smaller than the inner diameter of the portion of the body which contains it, so that there exists, around the electromagnet, an annular space 31.
  • the tube 8 bringing the aerating air opens into this space 31 which is connected to the aerating chamber 7 by at least one passage32 passing through the front portion of the body 20.
  • the above-said circuit bringing air to this chamber is hence constituted by the tube 8, the space 31 and one or more passages 32.
  • zone A of the induction pipe 1 is subject to more or less intense reduced pressure during the operation of the engine, air circulates constantly in the same direction from the tube 8 towards chamber 7 to penetrate into zone A through the orifice 6. This results in continuous renewal of the air inside the space 31 where the winding of the electromagnet 17 is located. in this way, heat released by this winding is removed by the air which circulates in the body 20 and which thus contributes to its cooling.
  • the air current established according to the invention has hence the effect, on the one hand, of avoiding transmission of heat between the body of the injector 20 and the winding of the electromagnet l7, and, on the other hand, of removing calories released through this winding and this in continuous and permanent manner.
  • the invention therefore prevents excessive heating of the electromagnetic valve. It enables, through this fact, the use, if this is necessary, of much greater intensities in the said winding and it avoids imposing the arrangement of insulating means outside the apparatus to overcome the disadvantages due to heating by radiation from the exterior.
  • an injection device for internal combustion engines, comprising a source of liquid fuel under pressure connected to an injection orifice communicating with a zone of the induction pipe situated downstream of the main throttle member of said pipe and a metering system adapted, by acting on the energization of an electromagnet which actuates a valve cooperating with said injection orifice, to modify the flow of injected fuel according to the airflow passing in said pipe, said injection orifice being aligned with an auxiliary orifice which opens into said zone of the induction pipe and the space included between the two orifices forming a chamber aerated at a substantially constant pressure, the improvement comprising air circuit means bringing the air to said chamber and defining a space around and close to the electromagnet, so that the airflow in said air circuit towards said zone of the induction pipe contributes towards the cooling of the electromagnet.
  • said metering system comprises a member driven in continuous rotary movement and capable, by acting on the energization of the electromagnet, of determining, over a fraction only of each of its turns, the opening of said valve, said system being arranged in such fashion that it increases said fraction in proportion as the opening increases of an auxiliary throttle member arranged in said induction pipe upstream of said main throttle member and adapted to be opened automatically and progressively in proportion as the airflow in said induction pipe increases.
  • said metering system comprises a member driven in continuous rotary movement and capable, by acting on the energization of the electromagnet, of determining, over a fraction only of each of its turns, the opening of said valve, said system being arranged in such fashion that it increases said fraction in proportion as the opening increases of an auxiliary throttle member arranged in said induction pipe upstream of said main throttle member and adapted to be opened automatically and progressively in proportion as the airflow in said induction pipe increases.

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)
US12581A 1969-02-25 1970-02-19 Fuel feed devices for internal combustion engines Expired - Lifetime US3646914A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6904749A FR2033449A5 (de) 1969-02-25 1969-02-25

Publications (1)

Publication Number Publication Date
US3646914A true US3646914A (en) 1972-03-07

Family

ID=9029552

Family Applications (1)

Application Number Title Priority Date Filing Date
US12581A Expired - Lifetime US3646914A (en) 1969-02-25 1970-02-19 Fuel feed devices for internal combustion engines

Country Status (7)

Country Link
US (1) US3646914A (de)
JP (1) JPS5138017B1 (de)
BR (1) BR7016953D0 (de)
DE (1) DE2008830A1 (de)
ES (1) ES376386A1 (de)
FR (1) FR2033449A5 (de)
GB (1) GB1275719A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3750632A (en) * 1970-03-26 1973-08-07 Bosch Gmbh Robert Electronic control for the air-fuel mixture and for the ignition of an internal combustion engine
US3826233A (en) * 1969-02-25 1974-07-30 Breverts Et D Etudes S I B E S Injection devices for internal combustion engines
US4257376A (en) * 1978-08-17 1981-03-24 The Bendix Corporation Single injector, single point fuel injection system
DE3135878A1 (de) * 1981-09-10 1983-03-24 Robert Bosch Gmbh, 7000 Stuttgart Vorrichtung zur kuehlung eines an einer brennkraftmaschine mit einem luftansaugrohr angeordneten kraftstoffeinspritzventiles
DE4137786A1 (de) * 1991-11-16 1993-05-19 Bosch Gmbh Robert Elektromagnetisch betaetigbares einspritzventil
US20170225180A1 (en) * 2013-03-12 2017-08-10 Nordson Corporation Jetting devices

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4232830A (en) * 1978-11-01 1980-11-11 The Bendix Corporation Electromagnetic fuel injector
CA1119065A (en) * 1978-11-01 1982-03-02 William B. Claxton Electromagnetic fuel injector
DE3117192A1 (de) * 1981-04-30 1982-11-25 Internationale Fluggeräte und Motoren GmbH, 6940 Weinheim Ventilantrieb
DE3320610A1 (de) * 1983-06-08 1984-12-13 Gerhard Dipl.-Ing. 4630 Bochum Mesenich Einspritzventil fuer verbrennungsmotoren
US4552311A (en) * 1983-09-23 1985-11-12 Allied Corporation Low cost unitized fuel injection system
FR2569241A1 (fr) * 1984-03-05 1986-02-21 Mesenich Gerhard Soupape d'injection electromagnetique comportant un dispositif pour atomiser le carburant au moyen d'un courant d'air
DE3408012A1 (de) 1984-03-05 1985-09-05 Gerhard Dipl.-Ing. Warren Mich. Mesenich Elektromagnetisches einspritzventil
US4899699A (en) * 1988-03-09 1990-02-13 Chinese Petroleum Company Low pressure injection system for injecting fuel directly into cylinder of gasoline engine
DE4020188C2 (de) * 1989-06-26 2001-02-22 Denso Corp Elektromagnetisches Kraftstoff-Einspritzventil
DE4018256A1 (de) * 1990-06-07 1991-12-12 Bosch Gmbh Robert Elektromagnetisch betaetigbares brennstoffeinspritzventil
DE4112150C2 (de) * 1990-09-21 1998-11-19 Bosch Gmbh Robert Lochkörper und Ventil mit Lochkörper
EP0781915A1 (de) * 1995-12-26 1997-07-02 General Motors Corporation Kraftstoffeinspritzventil
JP2979467B2 (ja) * 1996-05-10 1999-11-15 株式会社ケーヒン 電磁式燃料噴射弁

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1551731A (en) * 1923-01-29 1925-09-01 James A Charter Fuel automizer
US2871841A (en) * 1954-10-04 1959-02-03 Laurence M Goodridge Pressure injection type carburetor
US3450353A (en) * 1966-10-20 1969-06-17 Bosch Gmbh Robert Electromagnetically actuated fuel injection valve for internal combustion engines
US3482558A (en) * 1968-01-12 1969-12-09 Acf Ind Inc Fuel injection system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1551731A (en) * 1923-01-29 1925-09-01 James A Charter Fuel automizer
US2871841A (en) * 1954-10-04 1959-02-03 Laurence M Goodridge Pressure injection type carburetor
US3450353A (en) * 1966-10-20 1969-06-17 Bosch Gmbh Robert Electromagnetically actuated fuel injection valve for internal combustion engines
US3482558A (en) * 1968-01-12 1969-12-09 Acf Ind Inc Fuel injection system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3826233A (en) * 1969-02-25 1974-07-30 Breverts Et D Etudes S I B E S Injection devices for internal combustion engines
US3750632A (en) * 1970-03-26 1973-08-07 Bosch Gmbh Robert Electronic control for the air-fuel mixture and for the ignition of an internal combustion engine
US4257376A (en) * 1978-08-17 1981-03-24 The Bendix Corporation Single injector, single point fuel injection system
DE3135878A1 (de) * 1981-09-10 1983-03-24 Robert Bosch Gmbh, 7000 Stuttgart Vorrichtung zur kuehlung eines an einer brennkraftmaschine mit einem luftansaugrohr angeordneten kraftstoffeinspritzventiles
DE4137786A1 (de) * 1991-11-16 1993-05-19 Bosch Gmbh Robert Elektromagnetisch betaetigbares einspritzventil
US5232167A (en) * 1991-11-16 1993-08-03 Robert Bosch Gmbh Electromagnetically actuatable injection valve
DE4137786C2 (de) * 1991-11-16 1999-03-25 Bosch Gmbh Robert Elektromagnetisch betätigbares Einspritzventil
US20170225180A1 (en) * 2013-03-12 2017-08-10 Nordson Corporation Jetting devices

Also Published As

Publication number Publication date
BR7016953D0 (pt) 1973-02-27
FR2033449A5 (de) 1970-12-04
GB1275719A (en) 1972-05-24
DE2008830A1 (de) 1970-08-27
ES376386A1 (es) 1972-04-01
JPS5138017B1 (de) 1976-10-19

Similar Documents

Publication Publication Date Title
US3646914A (en) Fuel feed devices for internal combustion engines
US3706444A (en) Carburettor for motor vehicle
DE2044703C3 (de)
US3542004A (en) Recycle apparatus
US4387695A (en) Fuel injection apparatus
SE450651B (sv) Glodstiftsanordning for forbrenningsmotorer
US4387696A (en) Electromagnetically controlled fuel injection system
DE2120950C3 (de) Steuereinrichtung für die Abgaszusammensetzung von Brennkraftmaschinen
US3684257A (en) Carburetters
GB982461A (en) Improvements in or relating to internal combustion engines
US2719519A (en) Carburetor
US2576401A (en) Electric carburetor heater
GB2207285A (en) Cooling a valve of a fuel injection device
KR920701657A (ko) 연료 분사 밸브
JPH0672583B2 (ja) インゼクタ
US3331361A (en) Device for admitting two different fluids into a combustion chamber
GB929740A (en) Device for controlling the admission of fuel into an internal combustion engine
US2621030A (en) Carburetor nozzle system
GB2112072A (en) Constant suction carburettor with fuel passage bleed air heating
US3191585A (en) Carburetor
GB2036175A (en) Air/fuel mixture vaporizer using exhaust gas heat by direct measuring
GB1505439A (en) Carburation devices for internal combustion engines
US1567268A (en) Carburetor
US2569782A (en) Economizer
US4276867A (en) Fuel atomizing device