US3481542A - Safety device for electromagnetic fuel-injection spray nozzles for internal combustion engines - Google Patents

Safety device for electromagnetic fuel-injection spray nozzles for internal combustion engines Download PDF

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Publication number
US3481542A
US3481542A US3481542DA US3481542A US 3481542 A US3481542 A US 3481542A US 3481542D A US3481542D A US 3481542DA US 3481542 A US3481542 A US 3481542A
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United States
Prior art keywords
fuel
safety device
pressure
valve
space
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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
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English (en)
Inventor
Robert Huber
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
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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
    • 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
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0205—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively for cutting-out pumps or injectors in case of abnormal operation of the engine or the injection apparatus, e.g. over-speed, break-down of fuel pumps or injectors ; for cutting-out pumps for stopping the engine
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0205—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively for cutting-out pumps or injectors in case of abnormal operation of the engine or the injection apparatus, e.g. over-speed, break-down of fuel pumps or injectors ; for cutting-out pumps for stopping the engine
    • F02M63/0215—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively for cutting-out pumps or injectors in case of abnormal operation of the engine or the injection apparatus, e.g. over-speed, break-down of fuel pumps or injectors ; for cutting-out pumps for stopping the engine by draining or closing fuel conduits
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7758—Pilot or servo controlled
    • Y10T137/7761—Electrically actuated valve

Definitions

  • a safety device comprising a piston is located in the fuel-supply as fuel-outlet line of the spray nozzle. Movement of the piston, caused by fall in fuel pressure, shuts off the line. And/or the pressure between two series-connected valves is monitored, for operating a gauge and/or a warning device.
  • the invention relates to safety devices for electromagnetically, operated fuel-injection spray nozzles of internal combustion engines.
  • Spray nozzles in which the nozzle-valve needle is opened by reducing the pressure in a space behind the needle are known in the prior art.
  • the prior art also discloses controlling the fall in pressure in this space by means of an electromagnetically-operated valve, such that the duration that this valve is open determines the duration of fuel injection and consequently the quantity of fuel that is injected.
  • Spray nozzles of this kind are fed from a common conduit that is under the fuel pressure, which latter i customarily held constant, although it can be varied to suit changed operating conditions.
  • Fuel-injection spray nozzles of this sort have the disadvantage that, should the nozzle-valve needle stick open or the electromagnetic valve misoperate, an uncontrolled quantity of fuel can enter the cylinder.
  • An object of the invention is to limit the amount of fuel that can be injected, even though the nozzle-valve needle is stuck open.
  • a further object of the invention is to monitor continuously the functioning of the one or more electromagnetic valves, and thereby to prevent faulty operation.
  • FIG. 1 is a longitudinal view in section of a fuel-injection spray nozzle equipped with the safety devices of the invention
  • FIG. 1a shows a variation of a detail of the arrangement of FIG. 1.
  • FIG. 2 is a schematic representation of a second embodiment of one safety device of the invention.
  • FIG. 3 graphically shows the variation of pressure with time behind the nozzle-valve needle and between the two electromagnetic valves.
  • the fuel-injection spray nozzle is connected via a fuel-supply line 1 to a common conduit 2, which is under the injection pressure.
  • the line 1 incorporates a safety device 3, comprising a piston 4, a spring 5, and a bypass 6 or 6 that incorporates a calibrated aperture which will be referred to again later in the description.
  • the fuel is urged through the passage 7 into the annular space 8, from whence it is conveyed, on the one hand, to the front end of a nozzle-valve needle 10 via a passage 9, and, on the other hand, via a calibrated aperture 11 and a passage 12 into the space 12A located behind the nozzle-valve needle.
  • a springoperated push rod 13 and its spring 14 are located in the space 12A.
  • the upper end of this space is closed off by an electromagnetic valve 15.
  • a diaphragm spring 16 presses the valve 15 downwardly against its seat, and an electromagnet 17 opens the valve.
  • the chamber in which the valve 15 is located is connected via a passage 18 to a second electromagnetic valve 19 of identical or similar construction.
  • the two valves 15 and 19 have approximately the same cross sectional areas.
  • the chamber housing of this second valve is connected via a fuel-outlet line 20 to a fuel-return conduit.
  • a line 21 connects the space 26, located between the two electromagnetic valves, to a pressure gauge 27, which can be an expansible metallicelement gauge, and which can operate an alarm or warning apparatus (not shown) via switching contacts (not shown).
  • the line 21 can also be connected directly to an alarm or Warning device.
  • the energizing current for the electromagnetic valves is conducted via a lead 22.
  • FIG. 2 there is shown a variation of the safety device 3, wherein a reservoir chamber 23 is connected to a spring -loaded piston 24 that controls an electrical switch 25.
  • This variation will be treated further on in the specification.
  • the upper, solid curve shows the variation in pressure in atmospheres as a function of time in the space 12A, and the lower, dashed curve that in the space 26.
  • the fuel-injection spray nozzle of the invention operates in the following manner.
  • the nozzle-valve needle 10 When the nozzle-valve needle 10 is closed, the line 1, the passages 7, 9, and 12, the annular space 8, and the calibrated aperture 11 are under the full fuel pressure, whereas the pressure in the space 26 is less than that.
  • An electrical pulse conducted via the lead 22 causes both electromagnetic valves simultaneously to rise off their seats, whereby the fuel escaping past these valves causes the pressure in space 12A to fall.
  • the cross sectional areas of the calibrated aperture 11 and of the two electromagnetic valves are so chosen that the pressure in the space falls, for example, from 500 to 200 atmospheres.
  • the needle taper 10A and that portion of the needle-tip taper lying between the commencement thereof and the beginning of the seat therefor, act to subject an equivalent large part of the cross sectional area of the nozzle-valve needle 10 to the full fuel pressure, which latter tends to move the needle against its spring bias, the needle opens with even a small decline-50 to atmospheres-in the pressure in the space 12A, and remains open until the electromagnetic valves are closed and the pressure in the space 12A again rises.
  • the pressure existing between the two electromagnetic valves-that is, in the space 26 serves as a monitoring pressure, which operates the pressure gauge 27 or an alarm or warning device (not shown).
  • the monitoring pressure changes. It rises, for example, if valve 15 is stuck in an open position while valve 19 is closed; and falls if the valve 15 does not open but valve 19 does.
  • This arrangement of the invention further has the advantage that even should one of the electromagnetic valves remain open the fuel-injection spray nozzle continues to operate, although under slightly changed conditions.
  • the time cross sections of the two electromagnetic valves can also be different.
  • the one valve can have amuch larger cross section than the other, as a consequence of which the pressure in the space 26 will be a definite fraction of that in the space 12A.
  • the two electromagnetic valves can be separately operated.
  • the valve 15 can be opened prior to the valve 19, whereby the fuel escaping from the space 12A into the space 26 causes a momentary fall in pressure in the former that acts briefly to raise the nozzle-valve needle 10 for the purpose of a preinjection of fuel.
  • the main injection is caused by the opening of the valve 19.
  • the safety device 3 in accordance with the invention is built into the fuelsupply line 1.
  • the piston 4 is seated against the left-hand seat. As soon as the spray nozzle opens the pressure on the right-hand side of the piston falls, and the piston 4 shifts rightwards.
  • the bypass 6 Since the volume displaced by the piston until it closes off the bypass 6 is somewhat greater than the maximum permissible volume of fuel that is to be injected by the spray nozzle, the bypass 6 is not closed off until the volume of fuel flowing through the safety device exceeds the said maximum volume by a certain amount, upon which the piston comes to rest against the right-hand side seat, shutting off the bypass.
  • the calibrated aperture 6A is sufliciently large to ensure that even when the engine is turning over very fast the spring 5 forces the piston back to its original left-hand position during the time between two successive injections.
  • the bypass 6 can take the form of a narrow passage 6 incorporated in the piston.
  • the safety device 3 ensures that, should the nozzlevalve needle 10 remain open, the piston 4, in consequence of the fall in pressure on its right-hand side, will shift all the way to the right, thereby closing off the bypass 6 or 6'.
  • the safety device 3 can also be provided with a warning or alarm device (not shown) that operates when the pressure in the line 1, between the device 3 and the spray nozzle, falls unduly low while the bypass 6 or 6' is closed.
  • the safety device can be employed, as in the preceding case when not equipped with a warning device or alarm, with indirectly operated valves as well as with directly electromagnetically-operated valves. Since the quantity of fuel that flows through the electromagnetic valves is proportional to that quantity which is injected, a safety device of the kind 3 can also be connected in the fueloutlet line 20.
  • the safety device closes 01f the line 20, whereupon the pressure in the space 12A rises to a valve equal to that of the injections pressure and remains there, thereby preventing the nozzle-valve needle 10 from again opening.
  • the safety device 3 can be connected in the line 1 and/ or in the line 20.
  • the reservoir chamber 23 has a volume such that, with maximum injection, the pressure within the chamber falls, for example, from 500 to 300 atmospheres. If the pressure should fall further, because the nozzle-valve needle 10 is stuck open, the piston 24, which is spring biased to move towards the chamber 23, shifts under the effect of the bias and thereby closes the switch 25, which operates an alarm or a warning signal (not shown), or shuts off the fuel pump.
  • the line 1, between the chamber 23 and the common conduit 2 incorporates a calibrated aperture 23a, which serves the same purpose as the aperture 6A of the embodiment illustrated in FIG. 1.
  • alarm means shall be construed to cover all devices, usable with the invention, that are suitable for giving an alarm or a warning.
  • a safety device for an electromagnetically-operated fuel-injection spray nozzle of an internal combustion engine including a fuel-supply line and a fuel-outlet line for the spray nozzle, and safety means provided in at least one of said lines which acts to shut off the respective line and/ or to turn on an alarm means when the maximum permissible quantity of fuel is exceeded by a given amount.
  • said safety means includes a piston movable between a first and a second end position and acted upon, on the one side, by the full fuel pressure, and, on the other side, by the fluid pressure present in said line between the spray nozzle and said safety means, resilient means for loading said piston to return it to said first end position between two successive injections, and a bypass for conveying fuel from one side of said piston to the other side thereof, said piston closes said bypass when the former is in said second end position, during each injection period said piston moves from said first end position towards said second end position through a stroke that is proportional to the quantity of fuel injected, and said piston reaches said second end position and closes said bypass when the quantity of fuel injected exceeds by a given amount the maximum permissable quantity.
  • the fuel-injection spray nozzle includes two electromagnetically-operated valves connected in series and separated by a fuel-containing space, and monitoring means for monitoring the fluid pressure in said space.

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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)
  • Fluid Mechanics (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
US3481542D 1967-03-22 1968-02-23 Safety device for electromagnetic fuel-injection spray nozzles for internal combustion engines Expired - Lifetime US3481542A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH412967A CH447714A (de) 1967-03-22 1967-03-22 Sicherheitsvorrichtung an elektromagnetischen Einspritzventilen von Verbrennungsmotoren

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US3481542A true US3481542A (en) 1969-12-02

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US3481542D Expired - Lifetime US3481542A (en) 1967-03-22 1968-02-23 Safety device for electromagnetic fuel-injection spray nozzles for internal combustion engines

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Country Link
US (1) US3481542A (de)
CH (1) CH447714A (de)
DE (1) DE1601408A1 (de)
DK (1) DK127860B (de)
FR (1) FR1555369A (de)
GB (1) GB1177334A (de)
NL (1) NL6803919A (de)
SE (1) SE337726B (de)

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3589619A (en) * 1968-04-08 1971-06-29 Koho Es Gepipari Miniszterium Gas burner assembly
US3680782A (en) * 1969-10-24 1972-08-01 Sopromi Soc Proc Modern Inject Electromagnetic injectors
US3704833A (en) * 1971-02-17 1972-12-05 Fred O Wheat Solenoid valve assembly
US3747857A (en) * 1970-06-24 1973-07-24 Cav Ltd Fuel injection systems
US3802626A (en) * 1971-07-08 1974-04-09 Peugeot Device for actuating an electromagnetically controlled injector
US3910503A (en) * 1973-05-12 1975-10-07 Cav Ltd Fuel injection nozzles
US4249497A (en) * 1977-12-31 1981-02-10 Robert Bosch Gmbh Fuel injection apparatus having at least one fuel injection valve for high-powered engines
US4467961A (en) * 1981-02-12 1984-08-28 Imperial Chemical Industries Plc Container and spraying system
US4482094A (en) * 1983-09-06 1984-11-13 General Motors Corporation Electromagnetic unit fuel injector
US4566416A (en) * 1981-07-31 1986-01-28 Stanadyne, Inc. Accumulator nozzle fuel injection system
US4603671A (en) * 1983-08-17 1986-08-05 Nippon Soken, Inc. Fuel injector for an internal combustion engine
US4798329A (en) * 1987-03-03 1989-01-17 Colt Industries Inc. Combined fuel injector and pressure regulator assembly
US4928886A (en) * 1987-02-04 1990-05-29 Voest-Alpine Automotive Gesellschaft M.B.H. Fuel injection nozzle
US4993636A (en) * 1988-03-04 1991-02-19 Yamaha Hatsudoki Kabushiki Kaisha High pressure fuel injection device for engine
US5048454A (en) * 1987-10-16 1991-09-17 Reinhold Berntsson Device for application of glue strips
US5067658A (en) * 1989-02-28 1991-11-26 Weber S.R.L. Diesel engine electromagnetic fuel injector
US5152841A (en) * 1987-04-27 1992-10-06 Behr Industrieanlagen Gmbh & Co. Method for automatic sequential coating of workpieces
US5544815A (en) * 1993-10-08 1996-08-13 Lucas Industries Public Limited Company Fuel injection Nozzle
US5740782A (en) * 1996-05-20 1998-04-21 Lowi, Jr.; Alvin Positive-displacement-metering, electro-hydraulic fuel injection system
US5870996A (en) * 1998-04-10 1999-02-16 Alfred J. Buescher High-pressure dual-feed-rate injector pump with auxiliary spill port
US5873527A (en) * 1997-02-19 1999-02-23 Caterpillar Inc. Fuel injector with regulated plunger motion
US5947382A (en) * 1997-06-11 1999-09-07 Stanadyne Automotive Corp. Servo controlled common rail injector
US5984201A (en) * 1996-10-10 1999-11-16 Robert Bosch Gmbh Fuel injection valve for internal combustion engines
US5988533A (en) * 1997-04-25 1999-11-23 Daimler Chryser Ag Magnetic valve controlled fuel injector
US6009850A (en) * 1998-04-10 2000-01-04 Alfred J. Buescher High-pressure dual-feed-rate injector pump with grooved port-closing edge
WO2000039452A2 (de) * 1998-12-28 2000-07-06 Robert Bosch Gmbh Kraftstoffeinspritzanlage
US6113014A (en) * 1998-07-13 2000-09-05 Caterpillar Inc. Dual solenoids on a single circuit and fuel injector using same
US6343587B1 (en) * 2000-06-28 2002-02-05 Siemens Automotive Corporation Fuel injector armature permitting fluid and vapor flow
US6431472B1 (en) 2000-12-21 2002-08-13 Caterpillar Inc. Fuel injector nozzle with outwardly opening check valve
US20030019955A1 (en) * 2000-08-10 2003-01-30 Kurt Schraudner Fuel injection valve
WO2003027485A1 (de) * 2001-09-05 2003-04-03 Robert Bosch Gmbh Kraftstoffeinspritzsystem mit hydraulisch von der zuleitung entkoppeltem injektor
US6685160B2 (en) 2001-07-30 2004-02-03 Caterpillar Inc Dual solenoid latching actuator and method of using same
US6749130B2 (en) 2000-12-08 2004-06-15 Caterpillar Inc Check line valve faster venting method
US20050145221A1 (en) * 2003-12-29 2005-07-07 Bernd Niethammer Fuel injector with piezoelectric actuator and method of use
WO2013152966A1 (de) * 2012-04-10 2013-10-17 Robert Bosch Gmbh Durchflussbegrenzer mit kugel und drossel
US20150285199A1 (en) * 2012-11-09 2015-10-08 Robert Bosch Gmbh Fuel injector and fuel-injection system having a fuel injector
US20180363610A1 (en) * 2017-06-14 2018-12-20 Caterpillar Inc. Fuel injector body with counterbore insert
CN113790116A (zh) * 2021-09-14 2021-12-14 哈尔滨工程大学 一种可实现可变喷油规律的电控高压共轨喷油器
US11713740B1 (en) * 2022-02-24 2023-08-01 Harbin Engineering University High-pressure common rail fuel injector capable of achieving highly stable injection based on throttling damping accommodating effect

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2909233A1 (de) * 1979-03-09 1980-09-18 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung fuer brennkraftmaschinen
DE2918147A1 (de) * 1979-05-05 1980-11-20 Maschf Augsburg Nuernberg Ag Brennstoffeinspritzvorrichtung fuer eine brennkraftmaschine
FR2502701A1 (fr) * 1981-03-26 1982-10-01 Renault Vehicules Ind Systeme d'injection a pilotage de l'injecteur, pour un moteur a combustion interne
US4539959A (en) * 1984-02-27 1985-09-10 General Motors Corporation Fuel injection system with fuel flow limiting valve assembly
CH668621A5 (de) * 1986-01-22 1989-01-13 Dereco Dieselmotoren Forschung Kraftstoffeinspritzanlage fuer eine brennkraftmaschine.
DE4427607C1 (de) * 1994-08-04 1995-09-14 Mtu Friedrichshafen Gmbh Mengenbegrenzungseinrichtung
DE102005036780A1 (de) * 2005-08-02 2007-02-08 L'orange Gmbh Kraftstoff-Einspritzsystem für eine Brennkraftmaschine

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Publication number Priority date Publication date Assignee Title
US2798769A (en) * 1956-09-27 1957-07-09 Mrs Clare H Whitson Liquid fuel injectors
US2852308A (en) * 1956-10-01 1958-09-16 Mrs Clare H Whitson Liquid fuel injectors
US2985378A (en) * 1960-07-19 1961-05-23 Gen Motors Corp Accumulator type injection apparatus
US3004720A (en) * 1958-09-24 1961-10-17 Bosch Gmbh Robert Fuel injection valve arrangement
US3180084A (en) * 1961-02-13 1965-04-27 Ciary Corp Thrust device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2798769A (en) * 1956-09-27 1957-07-09 Mrs Clare H Whitson Liquid fuel injectors
US2852308A (en) * 1956-10-01 1958-09-16 Mrs Clare H Whitson Liquid fuel injectors
US3004720A (en) * 1958-09-24 1961-10-17 Bosch Gmbh Robert Fuel injection valve arrangement
US2985378A (en) * 1960-07-19 1961-05-23 Gen Motors Corp Accumulator type injection apparatus
US3180084A (en) * 1961-02-13 1965-04-27 Ciary Corp Thrust device

Cited By (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3589619A (en) * 1968-04-08 1971-06-29 Koho Es Gepipari Miniszterium Gas burner assembly
US3680782A (en) * 1969-10-24 1972-08-01 Sopromi Soc Proc Modern Inject Electromagnetic injectors
US3747857A (en) * 1970-06-24 1973-07-24 Cav Ltd Fuel injection systems
US3704833A (en) * 1971-02-17 1972-12-05 Fred O Wheat Solenoid valve assembly
US3802626A (en) * 1971-07-08 1974-04-09 Peugeot Device for actuating an electromagnetically controlled injector
US3910503A (en) * 1973-05-12 1975-10-07 Cav Ltd Fuel injection nozzles
US4249497A (en) * 1977-12-31 1981-02-10 Robert Bosch Gmbh Fuel injection apparatus having at least one fuel injection valve for high-powered engines
US4467961A (en) * 1981-02-12 1984-08-28 Imperial Chemical Industries Plc Container and spraying system
US4566416A (en) * 1981-07-31 1986-01-28 Stanadyne, Inc. Accumulator nozzle fuel injection system
US4603671A (en) * 1983-08-17 1986-08-05 Nippon Soken, Inc. Fuel injector for an internal combustion engine
US4482094A (en) * 1983-09-06 1984-11-13 General Motors Corporation Electromagnetic unit fuel injector
US4928886A (en) * 1987-02-04 1990-05-29 Voest-Alpine Automotive Gesellschaft M.B.H. Fuel injection nozzle
US4798329A (en) * 1987-03-03 1989-01-17 Colt Industries Inc. Combined fuel injector and pressure regulator assembly
US5152841A (en) * 1987-04-27 1992-10-06 Behr Industrieanlagen Gmbh & Co. Method for automatic sequential coating of workpieces
US5048454A (en) * 1987-10-16 1991-09-17 Reinhold Berntsson Device for application of glue strips
US4993636A (en) * 1988-03-04 1991-02-19 Yamaha Hatsudoki Kabushiki Kaisha High pressure fuel injection device for engine
US5067658A (en) * 1989-02-28 1991-11-26 Weber S.R.L. Diesel engine electromagnetic fuel injector
US5544815A (en) * 1993-10-08 1996-08-13 Lucas Industries Public Limited Company Fuel injection Nozzle
US5556031A (en) * 1993-10-08 1996-09-17 Lucas Industries Public Limited Company Fuel injection nozzle having a valve and a control element for controlling fuel pressure acting on a surface of the valve
US5740782A (en) * 1996-05-20 1998-04-21 Lowi, Jr.; Alvin Positive-displacement-metering, electro-hydraulic fuel injection system
US5984201A (en) * 1996-10-10 1999-11-16 Robert Bosch Gmbh Fuel injection valve for internal combustion engines
US5873527A (en) * 1997-02-19 1999-02-23 Caterpillar Inc. Fuel injector with regulated plunger motion
US5988533A (en) * 1997-04-25 1999-11-23 Daimler Chryser Ag Magnetic valve controlled fuel injector
US5947382A (en) * 1997-06-11 1999-09-07 Stanadyne Automotive Corp. Servo controlled common rail injector
US5870996A (en) * 1998-04-10 1999-02-16 Alfred J. Buescher High-pressure dual-feed-rate injector pump with auxiliary spill port
US6009850A (en) * 1998-04-10 2000-01-04 Alfred J. Buescher High-pressure dual-feed-rate injector pump with grooved port-closing edge
US6113014A (en) * 1998-07-13 2000-09-05 Caterpillar Inc. Dual solenoids on a single circuit and fuel injector using same
WO2000039452A2 (de) * 1998-12-28 2000-07-06 Robert Bosch Gmbh Kraftstoffeinspritzanlage
WO2000039452A3 (de) * 1998-12-28 2001-03-08 Bosch Gmbh Robert Kraftstoffeinspritzanlage
US6374802B1 (en) * 1998-12-28 2002-04-23 Robert Bosch Gmbh Fuel injection system
US6343587B1 (en) * 2000-06-28 2002-02-05 Siemens Automotive Corporation Fuel injector armature permitting fluid and vapor flow
US6644283B2 (en) * 2000-06-28 2003-11-11 Siemens Automotive Corporation Fuel injector armature permitting fluid and vapor flow
US20030019955A1 (en) * 2000-08-10 2003-01-30 Kurt Schraudner Fuel injection valve
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Also Published As

Publication number Publication date
DE1601408A1 (de) 1971-01-07
FR1555369A (de) 1969-01-24
NL6803919A (de) 1968-09-23
GB1177334A (en) 1970-01-07
DK127860B (da) 1974-01-21
CH447714A (de) 1967-11-30
SE337726B (de) 1971-08-16

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