US3450353A - Electromagnetically actuated fuel injection valve for internal combustion engines - Google Patents

Electromagnetically actuated fuel injection valve for internal combustion engines Download PDF

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Publication number
US3450353A
US3450353A US670667A US3450353DA US3450353A US 3450353 A US3450353 A US 3450353A US 670667 A US670667 A US 670667A US 3450353D A US3450353D A US 3450353DA US 3450353 A US3450353 A US 3450353A
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United States
Prior art keywords
valve
armature
valve needle
fuel injection
stroke
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Expired - Lifetime
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US670667A
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English (en)
Inventor
Konrad Eckert
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Robert Bosch GmbH
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Robert Bosch GmbH
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    • 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
    • F02M51/0685—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 and the valve being allowed to move relatively to each other or not being attached to each other
    • 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

Definitions

  • FIGA A t AE v F t vr-:
  • Fuel injection valves having an electromagnetically displaceable valve needle to open a nozzle or discharge outlet are well known in the 'art.
  • the armature associated with the electromagnet is fixedly secured to the valve needle and consequently the two move as a unit.
  • the stroke of the valve needle is equal to that of the armature and the moment of opening the nozzle (that is, unseating of the valve needle) coincides with the start of displacement of the armature attracted by the magnet.
  • the nozzle remains open until the armature returns into its position of rest.
  • Such a structure is described, e.g., in German patent to Knapp et al., No. 1,156,602.
  • an electr-omagnetically actuated fuel injection valve in which the armature associated with the electromagnet and the valve needle are formed as separate, unconnected members and are separately movably held in such a manner that the armature upon energization of the electromagnet performs an advance stroke before causing motion of the valve needle.
  • the magnetic coil has to impart an initial accelerating force only to the armature to displace the same from its position of rest against the relatively small force of a return spring associated with the armature alone.
  • the valve needle has its own return spring which in no way counteracts the force of the magnetic field while the armature performs its advance stroke.
  • valve closing time is shortened with respect to the prior art devices since a stronger return spring for the valve needle may be used. This is made possible by the fact that the said return spring, regardless of its strength, has no effect on the armature at rest and during its advance stroke; consequently, this spring can cause no delay in the beginning of the fuel injection;
  • the period of one full cycle of armature movement (that is, the time of absence of the armature from its position of rest) is larger for the novel valve than for devices known heretofore while the injected fuel quantities are substantially the same during one cycle in both instances. Consequently, with unchanged tolerances of the lengths of said periods, the percentage of error is automatically reduced increas ing thereby the uniformity of the injected fuel quantities;
  • the structurally separate armature and valve needle also make possible to separately assemble and test, on the one hand, the nozzle body containing the valve needle and ,on the other hand, the valve housing containing the electromagnetic system and the armature.
  • FIG. 1 is an axial sectional view of the injection valve according to the invention
  • FIG. 2 is an enlarged view of one modified part of the injection valve
  • FIG. 3 is a view similar to FIG. 2 showing another modification of the same part
  • FIG. 4 is a stroke v. time curve of a known valve needle with integral armature
  • FIG. 5 is a stroke v. time curve of a valve needle with separately constructed and arranged armature according to the invention.
  • FIG. 1 there is shown a fuel injection valve comprising a hollow valve housing 1 having an axial cylindrical bore of stepped sections therethrough. Within the housing 1 there is disposed a spool 2 on which there is Wound a solenoid 3. The bore section of the valve housing 1 accommodating spool 2 is closed at its upper or fuel input end by means of an insert 4 having an outwardly projecting externally terraced nipple 4a which extends coaxially with the valve housing and which is adapted to receive the end of a fuel conduit (not shown). The insert 4 is provided with an axial bore 5 for the admission of fuel.
  • the bore 5 is internally threaded to receive an abutment sleeve 6, the lower end face of which forms an abutment for an armature 7 slidably disposed in the bore of the housing 1 and projecting into the axial bore of the magnet spool 2.
  • the armature 7 is axially downwardly extended by an armature pin 8 rigidly afiixed to the armature 7. Pin 8, beyond the upper end of armature 7, projects into the bore 6a of the abutment sleeve 6 and, beyond the lower end of armature 7, extends through the axial bore of a magnetic core 9.
  • the core 9 is fixedly held in the valve housing 1 by the lower end of spool 2 clamping a collar 9a of core 9 against a radially inwardly projecting shoulder 1b of housing 1.
  • the armature pin 8 which is shown in its position of rest, projects, beyond core 9, into the bore section of the valve housing portion 1a forming the output (injection) end of the valve housing 1.
  • the lower terminus of the axial bore in housing portion 1a is provided with an internal thread to receive a hollow valve body 10 having at its upper enlarged portion a complemental external thread 11.
  • the valve body 10 houses a nozzle body 12 in which there is disposed a valve needle 13.
  • a valve seat 14 which cooperates with the conical head 13a of the valve needle 13.
  • the valve needle 13, at a location spaced from head 13a, is surrounded by a spring seat sleeve 15 having a radially otfstanding upper shoulder 15a which is engaged by one end of a valve spring 16.
  • the other end of spring 16 rests against a radially extending lower shoulder 12a of the nozzle body 12.
  • the shoulder 15a of spring seat sleeve 15 abuts against an axially apertured and sectional stop member 17 which at its other end conforms to a shoulder 13c of the end section 13b of the valve needle 13.
  • the terminal face 13d of the valve needle 13 is at a predetermined distance A from the terminal face 8b of the end section 8a of the armature pin 8.
  • the clearance A may be adjusted by rotating to a lesser or greater extent the valve body 10 in the housing section 1a.
  • the terminal section In of the valve housing 1 has a plurality of radial bores 18 which extend through the wall of the housing and end in the area of the internal thread receiving the complemental thread 11 of the valve body 10.
  • the bores 18 are filled with sealing putty or any other suitable adhesive for preventing an accidental rotary displacement of the valve body 10 with respect to the housing section 1a and thus causing an accidental change of clearance A. It'is thus seen that the advance stroke of armature 7 may be externally set.
  • the total stroke or displacement of armature 7 is determined by the clearance B between the lower end face 7b of armature 7 and the upper end face 9b of core 9.
  • the clearance B which is greater than the clearance A may be finely adjusted by turning the abutment sleeve 6 within the insert 4.
  • Nipple 4a similarly to the end portion 1a of the housing 1 is provided in the area of its internal thread with a plurality of radially extending bore holes 19 which, after the setting of the abutment sleeve 6, are filled with sealing putty or other suitable adhesive for the purpose of locking the abutment sleeve 6 in its predetermined angular position with respect to the insert 4.
  • the armature 7 is urged into its position of rest and into engagement with abutment sleeve 6 by means of an armature return spring 20 which is compressed between a spring seat ring 21 rigidly affixed to the armature pin 8 and an inwardly extending shoulder 10a of the valve body
  • the fuel is introduced in the electromagnetically actuated injection valve through bore '5 of nipple 4a and passes through transverse bores 6b and axial grooves 6c to armature 7 which is also provided with longitudinal or axial grooves 7a serving as fuel channels. From the grooves 7a the fuel flows through axial grooves 22 of the magnet core 9 into the inner space 1012 of the valve body 10.
  • the fuel flows through transverse bores 23 provided in the nozzle body 12 into an annular chamber 24 defined by the valve needle 13 and the adjacent internal cylindrical wall 26 of constant diameter.
  • the annular chamber 24 terminates in the outwardly flared valve seat 14.
  • FIG. 3 shows a modified means for metering the admission of fuel to the nozzle.
  • calibrated slanted bores 27 (replacing the transversal bores 23 of FIGS. 1 and 2) which merge into the annular chamber 24 of the nozzle body 12.
  • the calibrated bores 27 may merge tangentially into wall 26 to cause a helical swirling motion of the 'fuel resulting in a more uniform stream of the injected fuel when the nozzle is open (i.e. the valve head 13a is unseated).
  • FIGS. 4 and 5 Operational effects of the novel injection valve will become apparent from a comparison of the graphs shown in FIGS. 4 and 5.
  • the movement of the armature is composed by a working stroke caused by the generated magnetic field and a return stroke caused by a return spring after the magnetic field has disappeared.
  • the movement of the valve needle is composed -'by an opening stroke caused by the armature performing its working stroke and a return or closing stroke caused by a return spring while the armature performs its return stroke.
  • the abscissae indicate duration or period of movements while the ordinates represent the distance of displacements.
  • FIG. 4 shows the course of stroke of a valve needle and armature in a heretofore known arrangement wherein the armature and the valve needle are fixedly secured to one another. Accordingly, the period t of one full cycle of armature movement equals exactly the open period t of the valve, and the valve stroke h equals the armature stroke h
  • the course is quite different for the armature and the valve needle constructed and arranged according to the invention.
  • the period t' of one full cycle of armature movement is larger than the open period t' of the valve because the armature first performs an advance stroke h',- during a period 2' and actuates the valve in the opening direction only at moment T'
  • the valve will close under the influence of the return spring at moment T' at the end of the open period t'
  • the armature assumes its position of rest only at moment T at the end of period t during which the armature performs the final portion h' of its return stroke h' while the valve is already closed.
  • FIG. 5 demonstrates that, on the one hand, the armature stroke h' is by the advance stroke h' longer than the valve stroke h' and, on the other hand, the period t' of one full cycle of armature movement is by t Z' longer than the open period t of the valve needle.
  • FIGS. 4 and 5 A comparison between FIGS. 4 and 5 shows that under equal conditions of injected fuel quantity (represented by the shaded areas in FIGS. 4 and 5), pressure of injection, throttle area, and r.p.m. of the engine, the period z',, of one full cycle of armature movement in the novel injection valve is longer than the period t of one full cycle of armature movement in valve devices known heretofore.
  • the absolute value of the tolerances in the length of period t' being the same as for period t the maximum percentage of permissible error in t' is reduced with respect to 13,.
  • the percentage of error in the injected fuel quantities during one cycle of valve operation is smaller in the injection valves according to the invention than in the known devices although, as shown hereinabove, the injected fuel quantities are substantially the same in both cases.
  • an electromagnetically actuated fuel injection valve of the type including a solenoid
  • the improvement comprising an armature having a position of rest and movable by a magnetic field generated by said solenoid upon energization thereof to perform a working stroke and a valve needle having a position of rest and movable by said armature to perform an opening stroke, said valve needle and said armature, when in their respective positions of rest, being separated from one another by a clearance so that said armature, when said solenoid is energized, is adapted to perform an advance stroke before moving said valve needle out of its position of rest.
  • a fuel injection valve as defined in claim 1 including a valve return spring urging said valve needle into its position of rest and causing said valve needle to perform a return stroke when said solenoid is de-energized and an armature return spring urging said armature into its position of rest and causing said armature to perform a return stroke when said solenoid is de-energized.
  • valve needle and said valve return spring are contained in a valve body, said valve housing and said valve body are provided with complemental threads and are threadably secured to one another, said clearance corresponding to said advance stroke is variable by a relative rotation between said valve body and said valve housing.
  • valve housing includes transversal bores in the region of said threads, said transversal bores adapted to receive securing means to prevent relative rotation between said valve body and said valve housing after setting said clearance.
  • a fuel injection valve as defined in claim 3 including an axially adjustable abutement inserted into said valve housing and defining said position of rest for said armature.
  • a fuel injection valve as defined in claim 4 including a hollow nozzle body secured within said valve body and provided with an internal cylindrical wall surrounding said valve needle, said cylindrical wall having a diameter constant throughout its length and terminating at one end in a flared portion defining a valve seat, said valve needle, remote from said terminal face thereof, terminating in a valve head associated with said valve seat, said valve head and said valve seat defining a nozzle, said valve needle provided with a portion of reduced diameter immediately adjacent said head to define with said cylindrical wall an annular chamber and means for admitting fuel into said chamber.
  • a fuel injection valve as defined in claim 7 wherein said portion of reduced diameter includes a radial enlargement defining with said cylindrical wall a throttle clearance for metering said fuel passing therethrough.
  • a fuel injection valve as defined in claim 7 wherein said means admitting fuel into said chamber includes at least one calibrated bore provided in said nozzle body.

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  • 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)
US670667A 1966-10-20 1967-09-26 Electromagnetically actuated fuel injection valve for internal combustion engines Expired - Lifetime US3450353A (en)

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DEB0089456 1966-10-20

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Cited By (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3646914A (en) * 1969-02-25 1972-03-07 Sibe Fuel feed devices for internal combustion engines
US3662987A (en) * 1969-02-28 1972-05-16 Bosch Gmbh Robert Injector valve
US3705692A (en) * 1970-02-13 1972-12-12 Roto Diesel Sa Electromagnetic injectors
US3796409A (en) * 1970-08-13 1974-03-12 Daimler Benz Ag Rapidly shifting leakage-proof electromagnetically actuated valve
US3824965A (en) * 1972-01-20 1974-07-23 Thermo Electron Corp Fuel system
US3913537A (en) * 1973-08-21 1975-10-21 Bosch Gmbh Robert Electromechanically controlled fuel injection valve for internal combustion engines
US3942485A (en) * 1970-10-07 1976-03-09 Hitachi, Ltd. Fuel injection apparatus
US4020801A (en) * 1973-11-09 1977-05-03 Politechnika Karkowska Two-stroke, multicylinder, spark ignition, pumpless injection internal combustion engine
US4022066A (en) * 1974-10-07 1977-05-10 Diessel Gmbh & Co. Apparatus for removing liquid samples
US4040569A (en) * 1975-02-26 1977-08-09 Robert Bosch Gmbh Electro-magnetic fuel injection valve
US4043351A (en) * 1975-11-26 1977-08-23 Midland-Ross Corporation Fluid valve including electrical circuit control
US4116389A (en) * 1976-12-27 1978-09-26 Essex Group, Inc. Electromagnetic fuel injection valve
WO1978000007A1 (en) * 1977-06-03 1978-12-07 W M Pfeiffer Direct injection fuel system
US4164326A (en) * 1978-04-06 1979-08-14 General Motors Corporation Electromagnetic fuel injector nozzle assembly
US4180022A (en) * 1977-10-31 1979-12-25 Chrysler Corporation Fuel injection system and control valve for multi-cylinder engines
US4181144A (en) * 1977-12-22 1980-01-01 Caterpillar Tractor Co. Hydraulically limited fuel injection nozzle
FR2455187A1 (fr) * 1979-04-24 1980-11-21 Mitsubishi Motors Corp Dispositif d'alimentation en carburant pour un moteur a combustion interne
WO1981003371A1 (en) * 1980-05-16 1981-11-26 Us Energy Fast-acting valve and uses thereof
US4394973A (en) * 1980-04-03 1983-07-26 Robert Bosch Gmbh Injection valve
FR2529958A1 (fr) * 1982-07-06 1984-01-13 Bosch Gmbh Robert Soupape a injection de carburant pour moteur a combustion interne et reglage de son dosage
US4666087A (en) * 1983-08-06 1987-05-19 Robert Bosch Gmbh Electromagnetically actuatable valve
US4783009A (en) * 1987-04-27 1988-11-08 Brunswick Corporation Calibration adjustment of electromagnetic fuel injectors
EP0291386A1 (de) * 1987-05-12 1988-11-17 Regie Nationale Des Usines Renault Einspritzventil für einen Motor mit gesteuerter Zündung und direkter Einspritzung
EP0410158A1 (de) * 1989-07-27 1991-01-30 Robert Bosch Gmbh Vorrichtung zum kombinierten Ausblasen von Kraftstoff und Luft für Kraftstoffeinspritzanlagen von Brennkraftmaschinen
US5080287A (en) * 1986-10-24 1992-01-14 Nippondenso Co., Ltd. Electromagnetic fuel injection valve for internal combustion engine
US5156342A (en) * 1986-10-24 1992-10-20 Nippondenso Co. Ltd. Electromagnetic fuel injection valve for internal combustion engine
US5161743A (en) * 1986-10-24 1992-11-10 Nippondenso Co., Ltd. Electromagnetic fuel injection valve for internal combustion engine
WO1993023172A1 (en) * 1992-05-19 1993-11-25 Dysekompagniet I/S Valve device with impact member and solenoid for atomizing a liquid
EP0599168A1 (de) * 1992-11-24 1994-06-01 FEV Motorentechnik GmbH & Co. KG Vorrichtung zum kombinierten Ausblasen von Kraftstoff und Luft
US5421521A (en) * 1993-12-23 1995-06-06 Caterpillar Inc. Fuel injection nozzle having a force-balanced check
US5628293A (en) * 1994-05-13 1997-05-13 Caterpillar Inc. Electronically-controlled fluid injector system having pre-injection pressurizable fluid storage chamber and direct-operated check
US5673669A (en) * 1994-07-29 1997-10-07 Caterpillar Inc. Hydraulically-actuated fluid injector having pre-injection pressurizable fluid storage chamber and direct-operated check
US5687693A (en) * 1994-07-29 1997-11-18 Caterpillar Inc. Hydraulically-actuated fuel injector with direct control needle valve
US5697342A (en) * 1994-07-29 1997-12-16 Caterpillar Inc. Hydraulically-actuated fuel injector with direct control needle valve
US5826562A (en) * 1994-07-29 1998-10-27 Caterpillar Inc. Piston and barrell assembly with stepped top and hydraulically-actuated fuel injector utilizing same
US5829688A (en) * 1996-01-13 1998-11-03 Robert Bosch Gmbh Injection valve for directly injecting fuel into an internal combustion engine
US5836521A (en) * 1995-03-09 1998-11-17 Dysekompagniet I/S Valve device with impact member and solenoid for atomizing a liquid
US6082332A (en) * 1994-07-29 2000-07-04 Caterpillar Inc. Hydraulically-actuated fuel injector with direct control needle valve
US6425375B1 (en) 1998-12-11 2002-07-30 Caterpillar Inc. Piston and barrel assembly with stepped top and hydraulically-actuated fuel injector utilizing same
WO2002084109A3 (de) * 2001-04-10 2002-12-12 Bosch Gmbh Robert Injektordüse mit drosselverhalten
US6575137B2 (en) 1994-07-29 2003-06-10 Caterpillar Inc Piston and barrel assembly with stepped top and hydraulically-actuated fuel injector utilizing same
US20070095955A1 (en) * 2005-11-02 2007-05-03 Guy Hoffmann Fuel injector having a separable armature and pintle
US20070095954A1 (en) * 2005-11-02 2007-05-03 Guy Hoffmann Solenoid actuated fuel injector having a pressure balanced pintle
US20080290194A1 (en) * 2007-04-30 2008-11-27 Magnetti Marelli Powertrain S.P.A. Outward opening fuel injector
WO2011012355A1 (de) * 2009-07-30 2011-02-03 Robert Bosch Gmbh Kraftstoffeinspritzventil für brennkraftmaschinen
US20120152206A1 (en) * 2010-12-17 2012-06-21 Denso Corporation Fuel injection device
US20150204275A1 (en) * 2014-01-17 2015-07-23 Robert Bosch Gmbh Gas injector for the direct injection of gaseous fuel into a combustion chamber
US10662910B2 (en) 2016-12-12 2020-05-26 Caterpillar Inc. Partial travel solenoid valve actuation arrangement

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1183889B (it) * 1985-06-11 1987-10-22 Weber Spa Valvola per la dosatura del carburante per un dispositivo di alimentazione di un motore a combustione interna
DE19716041C2 (de) * 1997-04-17 1999-11-04 Daimler Chrysler Ag Elektromagnetisch betätigbares Ventil

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US2339352A (en) * 1941-11-18 1944-01-18 William A Ray Fluid control valve
US3004720A (en) * 1958-09-24 1961-10-17 Bosch Gmbh Robert Fuel injection valve arrangement

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2339352A (en) * 1941-11-18 1944-01-18 William A Ray Fluid control valve
US3004720A (en) * 1958-09-24 1961-10-17 Bosch Gmbh Robert Fuel injection valve arrangement

Cited By (60)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3646914A (en) * 1969-02-25 1972-03-07 Sibe Fuel feed devices for internal combustion engines
US3662987A (en) * 1969-02-28 1972-05-16 Bosch Gmbh Robert Injector valve
US3705692A (en) * 1970-02-13 1972-12-12 Roto Diesel Sa Electromagnetic injectors
US3796409A (en) * 1970-08-13 1974-03-12 Daimler Benz Ag Rapidly shifting leakage-proof electromagnetically actuated valve
US3942485A (en) * 1970-10-07 1976-03-09 Hitachi, Ltd. Fuel injection apparatus
US3824965A (en) * 1972-01-20 1974-07-23 Thermo Electron Corp Fuel system
US3913537A (en) * 1973-08-21 1975-10-21 Bosch Gmbh Robert Electromechanically controlled fuel injection valve for internal combustion engines
US4020801A (en) * 1973-11-09 1977-05-03 Politechnika Karkowska Two-stroke, multicylinder, spark ignition, pumpless injection internal combustion engine
US4022066A (en) * 1974-10-07 1977-05-10 Diessel Gmbh & Co. Apparatus for removing liquid samples
US4040569A (en) * 1975-02-26 1977-08-09 Robert Bosch Gmbh Electro-magnetic fuel injection valve
US4043351A (en) * 1975-11-26 1977-08-23 Midland-Ross Corporation Fluid valve including electrical circuit control
US4116389A (en) * 1976-12-27 1978-09-26 Essex Group, Inc. Electromagnetic fuel injection valve
WO1978000007A1 (en) * 1977-06-03 1978-12-07 W M Pfeiffer Direct injection fuel system
US4180022A (en) * 1977-10-31 1979-12-25 Chrysler Corporation Fuel injection system and control valve for multi-cylinder engines
US4181144A (en) * 1977-12-22 1980-01-01 Caterpillar Tractor Co. Hydraulically limited fuel injection nozzle
US4164326A (en) * 1978-04-06 1979-08-14 General Motors Corporation Electromagnetic fuel injector nozzle assembly
FR2455187A1 (fr) * 1979-04-24 1980-11-21 Mitsubishi Motors Corp Dispositif d'alimentation en carburant pour un moteur a combustion interne
US4394973A (en) * 1980-04-03 1983-07-26 Robert Bosch Gmbh Injection valve
WO1981003371A1 (en) * 1980-05-16 1981-11-26 Us Energy Fast-acting valve and uses thereof
US4344449A (en) * 1980-05-16 1982-08-17 The United States Of America As Represented By The United States Department Of Energy Fast-acting valve and uses thereof
FR2529958A1 (fr) * 1982-07-06 1984-01-13 Bosch Gmbh Robert Soupape a injection de carburant pour moteur a combustion interne et reglage de son dosage
US4666087A (en) * 1983-08-06 1987-05-19 Robert Bosch Gmbh Electromagnetically actuatable valve
US5080287A (en) * 1986-10-24 1992-01-14 Nippondenso Co., Ltd. Electromagnetic fuel injection valve for internal combustion engine
US5156342A (en) * 1986-10-24 1992-10-20 Nippondenso Co. Ltd. Electromagnetic fuel injection valve for internal combustion engine
US5161743A (en) * 1986-10-24 1992-11-10 Nippondenso Co., Ltd. Electromagnetic fuel injection valve for internal combustion engine
US4783009A (en) * 1987-04-27 1988-11-08 Brunswick Corporation Calibration adjustment of electromagnetic fuel injectors
EP0291386A1 (de) * 1987-05-12 1988-11-17 Regie Nationale Des Usines Renault Einspritzventil für einen Motor mit gesteuerter Zündung und direkter Einspritzung
FR2615249A1 (fr) * 1987-05-12 1988-11-18 Renault Injecteur pour moteur a allumage commande et injection directe
EP0410158A1 (de) * 1989-07-27 1991-01-30 Robert Bosch Gmbh Vorrichtung zum kombinierten Ausblasen von Kraftstoff und Luft für Kraftstoffeinspritzanlagen von Brennkraftmaschinen
WO1993023172A1 (en) * 1992-05-19 1993-11-25 Dysekompagniet I/S Valve device with impact member and solenoid for atomizing a liquid
EP0599168A1 (de) * 1992-11-24 1994-06-01 FEV Motorentechnik GmbH & Co. KG Vorrichtung zum kombinierten Ausblasen von Kraftstoff und Luft
US5421521A (en) * 1993-12-23 1995-06-06 Caterpillar Inc. Fuel injection nozzle having a force-balanced check
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Also Published As

Publication number Publication date
GB1197738A (en) 1970-07-08
AT288784B (de) 1971-03-25

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