US3777977A - Injection device - Google Patents

Injection device Download PDF

Info

Publication number
US3777977A
US3777977A US00266252A US3777977DA US3777977A US 3777977 A US3777977 A US 3777977A US 00266252 A US00266252 A US 00266252A US 3777977D A US3777977D A US 3777977DA US 3777977 A US3777977 A US 3777977A
Authority
US
United States
Prior art keywords
chamber
injector
needle
closing member
seat
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
US00266252A
Other languages
English (en)
Inventor
M Regneault
Perret J Levallois
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.)
Automobiles Peugeot SA
Original Assignee
Automobiles Peugeot SA
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 Automobiles Peugeot SA filed Critical Automobiles Peugeot SA
Application granted granted Critical
Publication of US3777977A publication Critical patent/US3777977A/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
    • 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

Definitions

  • the present invention relates to internal combustion engines of the fuel injection type and more particularly concerns electrically or electronically controlled injection devices in which the injector needle is shifted from its seat by the action of the pressure of the fuel.
  • the needle of the injector is raised off its seat by the action of the pressure of the fuel in an annular chamber located in the vicinity of the front end of the needle and partly defined by the seat with which the needle co-operates.
  • This chamber is put under pressure or cut off from pressure under the control of a closing member which is actuated by an electromagnetic device and the needle is caused to move back against its seat by a spring as soon as the annular chamber is cut off from the pressure.
  • the essential drawback of this arrangement is that it encourages the rebound of the needle which results in leakage or seeping of fuel the poor combustion of which results in the formation of smoke, polluting gases and carbon deposit.
  • An object of the invention is to avoid these various drawbacks and in particular the risk of rebound of the needle of the injector, to improve the sealing of this needle on its seat and to render the rising of the needle off its seat unaffected by a variation in the rating of its return spring.
  • the invention provides an injection device comprising an injector carrier and an injector, a needle slidably mounted in the injector, a first chamber in the vicinity of the point of the needle and partly defined by the seat with which the needle cooperates, and a second chamber provided in the injector or the injector carrier and located at the end of the needle opposed to the point, wherein the first chamber is permanently connected to a source of fuel under pressure, such as the injection pump, whereas the second chamber is connected to a distributor valve adapted to put it alternately in communication with said source of fuel under pressure or with an enclosure in which prevails a substantially lower pressure, for example a pressure in the neighbourhood of atmospheric pressure.
  • a jet is provided in each of the conduits respectively connected to the first and second chambers whereby it is possible to control the rapidity of the movements of the needle away from and toward the seat and consequently the fuel flow during injection.
  • FIGURE is a sectional view of an injector and injector carrier according to the invention.
  • the FIGURE shows an injector carrier 1 in which are mounted the injector proper and its actuating device.
  • the injector comprises an injector head 2 which is fixed to the injector carrier by a screwthreaded flange 3 and in which a needle 4 is slidably mounted.
  • the injector carrier has a bore or aperture 5 into which the rear end portion of the needle extends, a return spring 6 bearing against the end of the needle.
  • an aperture 7 and a seat 8 are provided, the nose or point of the needle cooperating with this seat.
  • An annular chamber 9 is provided and is connected by a conduit 10a, 10b to the delivery side of the injection pump (not shown).
  • a first jet [1 is interposed between the conduits 10a, 10b.
  • the injector carrier 1 has a hollow lateral extension portion 1a in which are disposed a distributing valve 12 and an electromagnet 13.
  • a connector lb is adapted to be connected to the delivery side of the injection pump.
  • the distributing valve may be, for example, of the general type disclosed in US. Patent application Ser. No. 266,235 filed by the applicants. This type of distributing valve is preferably employed for the reasons indicated in the aforementioned patent application, but it must be understood that other types of distributing valve may be employed in the injection device according to the invention. It will merely be briefly mentioned that this distributing valve 12 comprises a composite body consisting ofa plurality of members 14, 15, 16, 17 and a double closing member 18 having two guide stems 19, 20, one of which is solid and the other grooved.
  • the two end faces of the closing member are subjected to equal pressure forces: in the chosen embodiment, these two faces have equal sections and are subjected to the pressure of the fuel supplied by the injection pump, whereas the two chambers 23, 24 defined by the double closing member 18 and the body are connected as follows: the chamber 23 is connected to the chamber 5 formed in the injector carrier by way of a conduit 25 in which is inserted a second jet 26 and the chamber 24 is connected by way of conduits 27, 28 and a coupling 29 to an enclosure (not shown) in which prevails a pressure in the neighborhood of atmospheric pressure.
  • the injection device operates in the following manner.
  • the chamber 5 When the electromagnet 13 is non-energized, the chamber 5 is in communication with the delivery side of the injection pump by way of the conduit 25, the jet 26 and the chambers 23, 22 and this has for effect strongly to apply the needle 4 against its seat, since the opposing pressure exerted in the chamber 9 is only applied against a reduced area of the needle, this area being reduced by the area of the seat 8.
  • the small spring 6 also tends to apply the needle against its seat.
  • the jets 11 and 26 still further improve the conditions of operation of this device.
  • the jet 26 inserted in the conduit 24 controls the rapidity with which the needle rises and falls relative to its seat and consequently the form of the start and end of the injection law.
  • the jet 11 inserted in the conduit a, 10b controls the rate of flow of the fuel during the injection and eliminates, as explained in the aforementioned patent application, the harmful effects produced by the deposit of carbon, among which may be mentioned a modification in the rate of flow of the injected fuel.
  • An injection device comprising an injector carrier, means defining an injector carried by the carrier, an injector needle having a pointed end portion and slidably mounted in the injector, means defining a seat in the injector for the pointed end portion of the needle, a first chamber in the injector in the vicinity of the pointed end portion of the needle and partly defined by the seat, means defining a second chamber, the needle having a rear end portion opposed to the pointed end portion and extending into the second chamber and having a surface partly defining the second chamber, passage means for permanently connecting the first chamber to a source of fuel under pressure, means defining an enclosure in which prevails a pressure which is substantially lower than the pressure of said source of fuel, a distributor valve comprising means defining a body, means defining a bore in the body, a closing member slidable in the bore, means for subjecting opposite ends of the closing member to the same pressure force, two opposite sealing faces on the closing memher, two opposed seats on the body for co-operation with the sealing faces, electromagnetic means combined with the closing member
  • closing member has two guiding portions at opposite ends of the closing member and slidable in said bore, said sealing faces and seats being annular.
  • An injection device comprising an injector carrier, means defining an injector carried by the carrier, an injector needle having a pointed end portion and slidably mounted in the injector, means defining a seat in the injector for the pointed end portion of the needle, a first chamber in the injector in the vicinity of the pointed end portion of the needle and partly defined by the seat, means defining a second chamber, the needle having a rear end portion opposed to the pointed end portion and extending into the second chamber and having a surfacepartly defining the second chamber, passage means for permanently connecting the first chamber to a source of fuel under pressure, means defining an enclosure in which prevails a pressure which is substantially lower than the pressure of said source of fuel, a distributing valve, passage means connecting the second chamber to the distributing valve which is capable of putting the second chamber in communication alternately with said source of fuel under pressure and with the enclosure, the distributing valve comprising a balanced double closing member and electromagnet means for shifting the double closing member.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
US00266252A 1971-07-08 1972-06-26 Injection device Expired - Lifetime US3777977A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7125045A FR2145081A5 (es) 1971-07-08 1971-07-08

Publications (1)

Publication Number Publication Date
US3777977A true US3777977A (en) 1973-12-11

Family

ID=9080041

Family Applications (1)

Application Number Title Priority Date Filing Date
US00266252A Expired - Lifetime US3777977A (en) 1971-07-08 1972-06-26 Injection device

Country Status (5)

Country Link
US (1) US3777977A (es)
DE (1) DE2217602A1 (es)
FR (1) FR2145081A5 (es)
GB (1) GB1397114A (es)
IT (1) IT952607B (es)

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3997117A (en) * 1975-01-09 1976-12-14 Klockner-Humboldt-Deutz Aktiengesellschaft Fuel injection valve for internal combustion engines
US4129255A (en) * 1977-09-12 1978-12-12 General Motors Corporation Electromagnetic unit fuel injector
US4129256A (en) * 1977-09-12 1978-12-12 General Motors Corporation Electromagnetic unit fuel injector
US4129254A (en) * 1977-09-12 1978-12-12 General Motors Corporation Electromagnetic unit fuel injector
US4156560A (en) * 1977-11-09 1979-05-29 The United States Of America As Represented By The Secretary Of The Army Electrically-controlled fuel injector
US4175587A (en) * 1977-10-31 1979-11-27 Chrysler Corporation Fuel injection system and control valve for multi-cylinder engines
US4392612A (en) * 1982-02-19 1983-07-12 General Motors Corporation Electromagnetic unit fuel injector
US4470545A (en) * 1982-02-19 1984-09-11 General Motors Corporation Electromagnetic unit fuel injector
EP0124191A2 (en) * 1983-04-04 1984-11-07 General Motors Corporation Electromagnetic unit fuel injector with cartridge type solenoid-actuated valve
US4566416A (en) * 1981-07-31 1986-01-28 Stanadyne, Inc. Accumulator nozzle fuel injection system
US4693223A (en) * 1984-06-21 1987-09-15 General Motors Corporation Fuel injection valve connection
US4993637A (en) * 1988-09-21 1991-02-19 Usui Kokusai Sangyo Kaisha, Ltd. Fuel injector
US5154350A (en) * 1990-04-06 1992-10-13 Weber S.R.L. Electromagnetically actuated fuel injection device for an internal combustion engine
US5263645A (en) * 1991-11-01 1993-11-23 Paul Marius A Fuel injector system
DE4236882C1 (de) * 1992-10-31 1994-04-21 Daimler Benz Ag Kraftstoffeinspritzanlage mit einer Hochdruckpumpe und einer gemeinsamen Versorgungsleitung für alle Einspritzdüsen mit Magnetventilsteuerung
US5355856A (en) * 1992-07-23 1994-10-18 Paul Marius A High pressure differential fuel injector
US5398724A (en) * 1993-06-28 1995-03-21 Woodward Governor Company High speed electrically actuated gaseous fuel admission valve
US5438968A (en) * 1993-10-06 1995-08-08 Bkm, Inc. Two-cycle utility internal combustion engine
US5441029A (en) * 1993-09-22 1995-08-15 Robert Bosch Gmbh Fuel injection system for internal combustion engines
DE4406901A1 (de) * 1994-03-03 1995-09-14 Daimler Benz Ag Magnetventilgesteuerter Injektor für eine Brennkraftmaschine
US5499157A (en) * 1994-11-09 1996-03-12 Woodward Governor Company Multiplexed electronic fuel injection control system
US5538187A (en) * 1993-12-07 1996-07-23 Robert Bosch Gmbh Fuel injection device for internal combustion engines
US5685273A (en) * 1996-08-07 1997-11-11 Bkm, Inc. Method and apparatus for controlling fuel injection in an internal combustion engine
US5832899A (en) * 1995-10-04 1998-11-10 Lucas Industries Plc Injector
DE10058760A1 (de) * 2000-11-27 2002-06-13 Bosch Gmbh Robert Geteilter Steuerventilkörper für Injektorsteuerventile
US20020167103A1 (en) * 2000-01-10 2002-11-14 Ickinger Georg Michael Method for introducing additives
US20030052202A1 (en) * 2001-09-20 2003-03-20 Koichi Ohata Fuel injection valve
WO2004081365A1 (en) * 2003-03-11 2004-09-23 Delphi Technologies, Inc. Fuel injector
US20060027684A1 (en) * 2004-06-30 2006-02-09 Mario Ricco Internal combustion engine fuel injector
US7131423B2 (en) 2004-10-06 2006-11-07 Point-Man Aeronautics, L.L.C. Fuel injection spark ignition system
DE102007025050B3 (de) * 2007-05-29 2008-10-16 L'orange Gmbh Hochdruck-Einspritzinjektor für Brennkraftmaschinen mit einer knicklaststeigernden Steuerstangenabstützung über unter Hochdruck stehendem Kraftstoff
DE10055714B4 (de) * 1999-11-10 2010-08-05 DENSO CORPORATION, Kariya-shi Kraftstoffeinspritzventil
US20100229827A1 (en) * 2009-03-11 2010-09-16 Big Cat Energy Corporation Fuel injection stream parallel opposed multiple electrode spark gap for fuel injector
US10066590B2 (en) 2015-02-27 2018-09-04 Avl Powertrain Engineering, Inc. Opposed piston three nozzle combustion chamber design
US10161371B2 (en) 2015-02-27 2018-12-25 Avl Powertrain Engineering, Inc. Opposed piston three nozzle piston bowl design
US10953414B2 (en) * 2015-10-29 2021-03-23 Capstan Ag Systems, Inc. System and methods for estimating fluid flow based on valve closure time

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2476746A1 (fr) * 1980-02-21 1981-08-28 Renault Circuit hydro-electrique d'assistance a un injecteur haute pression pour moteur diesel
DE3237258C1 (de) * 1982-10-08 1983-12-22 Daimler-Benz Ag, 7000 Stuttgart Elektrisch vorgesteuerte Ventilanordnung
JP2753712B2 (ja) * 1988-10-17 1998-05-20 ヤマハ発動機株式会社 エンジンの高圧燃料噴射装置
CH686845A5 (de) * 1993-03-08 1996-07-15 Ganser Hydromag Steueranordnung fuer ein Einspritzventil fuer Verbrennungskraftmaschinen.
WO1995025888A1 (de) * 1994-03-24 1995-09-28 Siemens Aktiengesellschaft Einspritzventil für brennkraftmaschinen
GB2289313B (en) * 1994-05-13 1998-09-30 Caterpillar Inc Fluid injector system
US5819704A (en) * 1996-07-25 1998-10-13 Cummins Engine Company, Inc. Needle controlled fuel system with cyclic pressure generation
IT1288748B1 (it) * 1996-10-11 1998-09-24 Iveco Fiat Iniettore di combustibile per un motore endotermico e motore endotermico provvisto di tale iniettore
DE10147830B4 (de) * 2001-09-27 2008-05-08 L'orange Gmbh Kraftstoffinjektor
DE10254750A1 (de) * 2002-11-23 2004-06-17 Robert Bosch Gmbh Kraftstoffeinspritzvorrichtung mit einem kraftausgeglichenen 3/2-Wege-Steuerventil
DE102005026979B4 (de) * 2005-06-10 2009-11-12 Siemens Ag Kraftstoffinjektor mit einer steuerbaren Ablaufdrossel einer Servoventil-Einheit zur Steuerung einer Düsennadel
US20160252066A1 (en) * 2015-02-27 2016-09-01 Avl Powertrain Engineering, Inc. Fuel Injector with Offset Nozzle Angle

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2788246A (en) * 1956-06-27 1957-04-09 Alco Products Inc Fuel injectors
US3409226A (en) * 1965-06-11 1968-11-05 Sulzer Ag Fuel injection apparatus for piston-type internal combustion engines
US3464627A (en) * 1966-06-21 1969-09-02 Sopromi Soc Proc Modern Inject Electromagnetic fuel-injection valve
US3610529A (en) * 1968-08-28 1971-10-05 Sopromi Soc Proc Modern Inject Electromagnetic fuel injection spray valve
US3680782A (en) * 1969-10-24 1972-08-01 Sopromi Soc Proc Modern Inject Electromagnetic injectors

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2788246A (en) * 1956-06-27 1957-04-09 Alco Products Inc Fuel injectors
US3409226A (en) * 1965-06-11 1968-11-05 Sulzer Ag Fuel injection apparatus for piston-type internal combustion engines
US3464627A (en) * 1966-06-21 1969-09-02 Sopromi Soc Proc Modern Inject Electromagnetic fuel-injection valve
US3610529A (en) * 1968-08-28 1971-10-05 Sopromi Soc Proc Modern Inject Electromagnetic fuel injection spray valve
US3680782A (en) * 1969-10-24 1972-08-01 Sopromi Soc Proc Modern Inject Electromagnetic injectors

Cited By (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3997117A (en) * 1975-01-09 1976-12-14 Klockner-Humboldt-Deutz Aktiengesellschaft Fuel injection valve for internal combustion engines
US4129255A (en) * 1977-09-12 1978-12-12 General Motors Corporation Electromagnetic unit fuel injector
US4129256A (en) * 1977-09-12 1978-12-12 General Motors Corporation Electromagnetic unit fuel injector
US4129254A (en) * 1977-09-12 1978-12-12 General Motors Corporation Electromagnetic unit fuel injector
DE2836226A1 (de) * 1977-09-12 1979-03-22 Gen Motors Corp Brennstoffeinspritzeinrichtung fuer brennkraftmaschinen
US4175587A (en) * 1977-10-31 1979-11-27 Chrysler Corporation Fuel injection system and control valve for multi-cylinder engines
US4156560A (en) * 1977-11-09 1979-05-29 The United States Of America As Represented By The Secretary Of The Army Electrically-controlled fuel injector
US4566416A (en) * 1981-07-31 1986-01-28 Stanadyne, Inc. Accumulator nozzle fuel injection system
US4485969A (en) * 1982-02-19 1984-12-04 General Motors Corporation Electromagnetic unit fuel injector with cartridge type solenoid actuated valve
US4470545A (en) * 1982-02-19 1984-09-11 General Motors Corporation Electromagnetic unit fuel injector
US4392612A (en) * 1982-02-19 1983-07-12 General Motors Corporation Electromagnetic unit fuel injector
EP0124191A2 (en) * 1983-04-04 1984-11-07 General Motors Corporation Electromagnetic unit fuel injector with cartridge type solenoid-actuated valve
EP0124191A3 (en) * 1983-04-04 1985-11-27 General Motors Corporation Electromagnetic unit fuel injector with cartridge type solenoid-actuated valve
US4693223A (en) * 1984-06-21 1987-09-15 General Motors Corporation Fuel injection valve connection
US4993637A (en) * 1988-09-21 1991-02-19 Usui Kokusai Sangyo Kaisha, Ltd. Fuel injector
US5154350A (en) * 1990-04-06 1992-10-13 Weber S.R.L. Electromagnetically actuated fuel injection device for an internal combustion engine
US5263645A (en) * 1991-11-01 1993-11-23 Paul Marius A Fuel injector system
US5355856A (en) * 1992-07-23 1994-10-18 Paul Marius A High pressure differential fuel injector
DE4236882C1 (de) * 1992-10-31 1994-04-21 Daimler Benz Ag Kraftstoffeinspritzanlage mit einer Hochdruckpumpe und einer gemeinsamen Versorgungsleitung für alle Einspritzdüsen mit Magnetventilsteuerung
US5398724A (en) * 1993-06-28 1995-03-21 Woodward Governor Company High speed electrically actuated gaseous fuel admission valve
US5441029A (en) * 1993-09-22 1995-08-15 Robert Bosch Gmbh Fuel injection system for internal combustion engines
US5438968A (en) * 1993-10-06 1995-08-08 Bkm, Inc. Two-cycle utility internal combustion engine
US5538187A (en) * 1993-12-07 1996-07-23 Robert Bosch Gmbh Fuel injection device for internal combustion engines
DE4406901A1 (de) * 1994-03-03 1995-09-14 Daimler Benz Ag Magnetventilgesteuerter Injektor für eine Brennkraftmaschine
DE4406901C2 (de) * 1994-03-03 1998-03-19 Daimler Benz Ag Magnetventilgesteuerter Injektor für eine Brennkraftmaschine
US5499157A (en) * 1994-11-09 1996-03-12 Woodward Governor Company Multiplexed electronic fuel injection control system
US5832899A (en) * 1995-10-04 1998-11-10 Lucas Industries Plc Injector
US5685273A (en) * 1996-08-07 1997-11-11 Bkm, Inc. Method and apparatus for controlling fuel injection in an internal combustion engine
DE10055714B4 (de) * 1999-11-10 2010-08-05 DENSO CORPORATION, Kariya-shi Kraftstoffeinspritzventil
US20020167103A1 (en) * 2000-01-10 2002-11-14 Ickinger Georg Michael Method for introducing additives
US6866171B2 (en) 2000-01-10 2005-03-15 Sulzer Chemtech Ag Method for introducing additives
DE10058760A1 (de) * 2000-11-27 2002-06-13 Bosch Gmbh Robert Geteilter Steuerventilkörper für Injektorsteuerventile
DE10058760C2 (de) * 2000-11-27 2003-05-28 Bosch Gmbh Robert Geteilter Steuerventilkörper für Injektorsteuerventile
US6698666B2 (en) * 2001-09-20 2004-03-02 Denso Corporation Fuel injection valve
US20030052202A1 (en) * 2001-09-20 2003-03-20 Koichi Ohata Fuel injection valve
WO2004081365A1 (en) * 2003-03-11 2004-09-23 Delphi Technologies, Inc. Fuel injector
US20060027684A1 (en) * 2004-06-30 2006-02-09 Mario Ricco Internal combustion engine fuel injector
US7740187B2 (en) * 2004-06-30 2010-06-22 C.R.F. Societa Consortile Per Azioni Internal combustion engine fuel injector
US7131423B2 (en) 2004-10-06 2006-11-07 Point-Man Aeronautics, L.L.C. Fuel injection spark ignition system
US20070261676A1 (en) * 2004-10-06 2007-11-15 Ehresman Thomas E Fuel Injection Spark Ignition System
US7578279B2 (en) 2004-10-06 2009-08-25 Point-Man Aeronautics, Llc Fuel injection spark ignition system
DE102007025050B3 (de) * 2007-05-29 2008-10-16 L'orange Gmbh Hochdruck-Einspritzinjektor für Brennkraftmaschinen mit einer knicklaststeigernden Steuerstangenabstützung über unter Hochdruck stehendem Kraftstoff
US20100229827A1 (en) * 2009-03-11 2010-09-16 Big Cat Energy Corporation Fuel injection stream parallel opposed multiple electrode spark gap for fuel injector
US8069836B2 (en) 2009-03-11 2011-12-06 Point-Man Aeronautics, Llc Fuel injection stream parallel opposed multiple electrode spark gap for fuel injector
US10066590B2 (en) 2015-02-27 2018-09-04 Avl Powertrain Engineering, Inc. Opposed piston three nozzle combustion chamber design
US10161371B2 (en) 2015-02-27 2018-12-25 Avl Powertrain Engineering, Inc. Opposed piston three nozzle piston bowl design
US10953414B2 (en) * 2015-10-29 2021-03-23 Capstan Ag Systems, Inc. System and methods for estimating fluid flow based on valve closure time
US20210187523A1 (en) * 2015-10-29 2021-06-24 Capstan Ag Systems, Inc. Drive circuit for estimating fluid flow based on valve closure time and fluid application system including same
US11998934B2 (en) * 2015-10-29 2024-06-04 Capstan Ag Systems, Inc. Drive circuit for estimating fluid flow based on valve closure time and fluid application system including same

Also Published As

Publication number Publication date
FR2145081A5 (es) 1973-02-16
DE2217602A1 (de) 1973-01-18
GB1397114A (en) 1975-06-11
IT952607B (it) 1973-07-30

Similar Documents

Publication Publication Date Title
US3777977A (en) Injection device
US3802626A (en) Device for actuating an electromagnetically controlled injector
US5899389A (en) Two stage fuel injector nozzle assembly
US3464627A (en) Electromagnetic fuel-injection valve
US6220528B1 (en) Fuel injector including an outer valve needle, and inner valve needle slidable within a bore formed in the outer valve needle
US4951874A (en) Unit fuel injector
US9046067B2 (en) Dual fuel injector with off set check biasing springs
GB1326228A (en) Electromagnetically controlled fuel injector
US4941612A (en) Unit fuel injector
US6336595B1 (en) Fuel injector
US6053421A (en) Hydraulically-actuated fuel injector with rate shaping spool control valve
EP0690223A2 (en) Device for adjusting the travel of a fuel injector shutter
GB1183156A (en) Improvements in or relating to Fuel Injection Valves
US6308689B1 (en) Injection valve for an internal combustion engine
US6029632A (en) Fuel injector with magnetic valve control for a multicylinder internal combustion engine with direct fuel injection
JP2013137016A (ja) 燃料噴射器
US6955114B2 (en) Three way valve and electro-hydraulic actuator using same
US6109542A (en) Servo-controlled fuel injector with leakage limiting device
US3598314A (en) Accumulator-type injection valve
GB2364102A (en) Pressure-controlled i.c. engine fuel injector with controlled nozzle needle
GB1078900A (en) Gas turbine engine fuel system
US5494220A (en) Fuel injector assembly with pressure-equalized valve seat
GB1182721A (en) Improvements in or relating to Fuel Injection Nozzles for Internal Combustion Engines
GB2327713A (en) Direct-injection fuel injection valve with solenoid valve control for a multicylinder i.c. engine
GB2336627A (en) Fuel injector with biassing spring in blind bore in valve needle