GB2175452A - Electromagnetic intermittent fuel-injection valve - Google Patents

Electromagnetic intermittent fuel-injection valve Download PDF

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Publication number
GB2175452A
GB2175452A GB08610223A GB8610223A GB2175452A GB 2175452 A GB2175452 A GB 2175452A GB 08610223 A GB08610223 A GB 08610223A GB 8610223 A GB8610223 A GB 8610223A GB 2175452 A GB2175452 A GB 2175452A
Authority
GB
United Kingdom
Prior art keywords
fuel
valve
armature
soft
permanent
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.)
Granted
Application number
GB08610223A
Other versions
GB2175452B (en
GB8610223D0 (en
Inventor
Dieter Thonnessen
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.)
Pierburg GmbH
Original Assignee
Pierburg GmbH
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 Pierburg GmbH filed Critical Pierburg GmbH
Publication of GB8610223D0 publication Critical patent/GB8610223D0/en
Publication of GB2175452A publication Critical patent/GB2175452A/en
Application granted granted Critical
Publication of GB2175452B publication Critical patent/GB2175452B/en
Expired legal-status Critical Current

Links

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
    • F02M51/0689—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means and permanent magnets
    • 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
    • F02M51/0617—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature having two or more electromagnets
    • F02M51/0621—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature having two or more electromagnets acting on one mobile armature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0635—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding
    • F02M51/0639—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature acting as a valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/08—Injectors peculiar thereto with means directly operating the valve needle specially for low-pressure fuel-injection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1638—Armatures not entering the winding
    • H01F7/1646—Armatures or stationary parts of magnetic circuit having permanent magnet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/121—Guiding or setting position of armatures, e.g. retaining armatures in their end position
    • H01F7/122—Guiding or setting position of armatures, e.g. retaining armatures in their end position by permanent magnets

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

The valve has a permanent- magnet armature (4) which also functions as a valve body opening or closing an outlet (10); the armature (4) being situated between two soft iron cores (1) and (6) which are energised by respective coils (2) and (7), preferably according to predetermined programme. The coils may be energised simultaneously to cooperate in opening the valve against a return spring 15, or one coil may be energised to open the valve and another to close it. Alternatively the attraction between the armature (4) and lower core (6) may be used to close the valve. <IMAGE>

Description

SPECIFICATION Electromagnetic intermittent fuel-injection valve The invention relates to an electromagnetic intermittent fuel-injection valve for delivering fuel into the intake passage of an internal combustion engine, with a fuel outlet situated between a fuel inlet connection and a fuel return connection; the open cross section of the fuel outlet being c6ntrolled by a valve body in the form of a permanent magnet which, in opening the valve, is lifted off its seat by a magnetic field created by an electromagnet comprising an electric coil mounted on a soft-iron core; the flux lines of the magnetic field being guided by a soft-iron magnetic flux guide which forms a portion of the housing of the valve.
The invention in the present invention is to improve the response time of a valve of this general type.
Starting from a fuel-injection valve of the kind mentioned at the beginning, the problem is solved, according to the invention, in that opposite this first coil mounted on the first soft-iron core there is a second electric coil mounted on a second soft-iron core and also acting on the permanent-magnet armature, which is situated between the two soft-iron cores.
Using two coils in valves of this kind is known per se from the German Offenlegungsschrift 22 37 746, but in this known valve, each coil acts on its own armature, the two armatures being mechanically linked together.
This produces an excessively bulky valve.
The invention is defined in claim 1, and Examples of the invention are described in the subsidiary claims. The example represented diagrammatically in the drawing will now be described in greater detail.
The fuel injection valve has a first electric coil 2 mounted on a first soft-iron core 1. The nose of the core 1 provides an impact surface 3 for an attracted armature 4 in the form of a permanent magnet enclosed in a sheath 5 of a non-magnetic material, such as a synthetic resin or tungsten.
Situated on the other side of the armature 4, i.e. under the armature 4 as represented in the drawing, there is a second electric coil 7 mounted on a second core 6, which surrounds a valve insert 8 made of a non-magnetic material. The valve insert 8 provides a valve seat 9 for the armature 4, and an outlet nozzle 10 for injecting fuel into the intake passage of the engine.
The whole of this arrangement is contained in a housing 11 which acts as a magnetic flux guide for completing the magnetic field circuit.
The housing 11 also has a fuel inlet 12.
When the valve is closed, fuel entering through the fuel inlet 12 flows through an annular passage 13, which contains the armature 4, over the upper and lower coils 2 and 7 and through channels provided for the purpose to a fuel return-flow outlet 14 from where it returns to the fuel system of the engine, this flow-circuit ensuring good cooling for the two electric coils 2 and 7.
When the valve is open a portion of the fuel continues flowing through the flow-circuit just described, but a portion now flows over the surface of the armature 4 and out through the outlet nozzle 10 to the intake passage of the engine.
If desired the housing 11, which acts as a magnetic flux guide, can be interrupted by an insert of non-magnetic material, in order to prevent interference between the magnetic fields of the two electric coils. A further possibility is to make the housing of non-magnetic material and provide the necessary magnetic flux guides separately in the form of inserts in the housing.
Electric current is fed to the two coils 2 and 7 following a predetermined programme which is based on the polar orientation of the permanent-magnet armature 4. When current is sent through both the coils 2 and 7 simultaneously, the upper coil 2 attracts the armature 4, the lower coil 7 repelling it, i.e. the armature 4 is lifted, so as to open the valve, against the influence of a helical return spring 15, whose spring force is adjustable by means of an adjustment screw 16.
In a different version of the invention the helical return spring 15, with its adjustment screw 16, is not necessary, the movements of the armature 4 being controlled entirely magnetically.
In this case, when it is desired that the valve shell remain closed, for example when the vehicle is overrunning the engine, current is sent through at least one of the coils 2, 7 in the direction appropriate for holding the permanent-magnet armature 4 down on its valve seat 9.
When the engine is switched off, no flow of fuel being desired, the attraction between the permanent-magnet armature 4 and the lower soft-iron core 6 is alone sufficient for holding the armature 4 firmly down on its seat 9.
In a still further version of the invention current is programmed to flow through the two coils 2 and 7, in the one direction or the other, in a sequence such that the permanentmagnet armature 4 is lifted and lowered, opening and closing the valve, in the desired time-based alternation.
1. An electromagnetic intermittent fuel-injection valve for delivering fuel into the intake passage of an internal combustion engine, with a fuel outlet situated between a fuel inlet connection and a fuel return connection; the open cross section of the fuel outlet being
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (7)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Electromagnetic intermittent fuel-injection valve The invention relates to an electromagnetic intermittent fuel-injection valve for delivering fuel into the intake passage of an internal combustion engine, with a fuel outlet situated between a fuel inlet connection and a fuel return connection; the open cross section of the fuel outlet being c6ntrolled by a valve body in the form of a permanent magnet which, in opening the valve, is lifted off its seat by a magnetic field created by an electromagnet comprising an electric coil mounted on a soft-iron core; the flux lines of the magnetic field being guided by a soft-iron magnetic flux guide which forms a portion of the housing of the valve. The invention in the present invention is to improve the response time of a valve of this general type. Starting from a fuel-injection valve of the kind mentioned at the beginning, the problem is solved, according to the invention, in that opposite this first coil mounted on the first soft-iron core there is a second electric coil mounted on a second soft-iron core and also acting on the permanent-magnet armature, which is situated between the two soft-iron cores. Using two coils in valves of this kind is known per se from the German Offenlegungsschrift 22 37 746, but in this known valve, each coil acts on its own armature, the two armatures being mechanically linked together. This produces an excessively bulky valve. The invention is defined in claim 1, and Examples of the invention are described in the subsidiary claims. The example represented diagrammatically in the drawing will now be described in greater detail. The fuel injection valve has a first electric coil 2 mounted on a first soft-iron core 1. The nose of the core 1 provides an impact surface 3 for an attracted armature 4 in the form of a permanent magnet enclosed in a sheath 5 of a non-magnetic material, such as a synthetic resin or tungsten. Situated on the other side of the armature 4, i.e. under the armature 4 as represented in the drawing, there is a second electric coil 7 mounted on a second core 6, which surrounds a valve insert 8 made of a non-magnetic material. The valve insert 8 provides a valve seat 9 for the armature 4, and an outlet nozzle 10 for injecting fuel into the intake passage of the engine. The whole of this arrangement is contained in a housing 11 which acts as a magnetic flux guide for completing the magnetic field circuit. The housing 11 also has a fuel inlet 12. When the valve is closed, fuel entering through the fuel inlet 12 flows through an annular passage 13, which contains the armature 4, over the upper and lower coils 2 and 7 and through channels provided for the purpose to a fuel return-flow outlet 14 from where it returns to the fuel system of the engine, this flow-circuit ensuring good cooling for the two electric coils 2 and 7. When the valve is open a portion of the fuel continues flowing through the flow-circuit just described, but a portion now flows over the surface of the armature 4 and out through the outlet nozzle 10 to the intake passage of the engine. If desired the housing 11, which acts as a magnetic flux guide, can be interrupted by an insert of non-magnetic material, in order to prevent interference between the magnetic fields of the two electric coils. A further possibility is to make the housing of non-magnetic material and provide the necessary magnetic flux guides separately in the form of inserts in the housing. Electric current is fed to the two coils 2 and 7 following a predetermined programme which is based on the polar orientation of the permanent-magnet armature 4. When current is sent through both the coils 2 and 7 simultaneously, the upper coil 2 attracts the armature 4, the lower coil 7 repelling it, i.e. the armature 4 is lifted, so as to open the valve, against the influence of a helical return spring 15, whose spring force is adjustable by means of an adjustment screw 16. In a different version of the invention the helical return spring 15, with its adjustment screw 16, is not necessary, the movements of the armature 4 being controlled entirely magnetically. In this case, when it is desired that the valve shell remain closed, for example when the vehicle is overrunning the engine, current is sent through at least one of the coils 2, 7 in the direction appropriate for holding the permanent-magnet armature 4 down on its valve seat 9. When the engine is switched off, no flow of fuel being desired, the attraction between the permanent-magnet armature 4 and the lower soft-iron core 6 is alone sufficient for holding the armature 4 firmly down on its seat 9. In a still further version of the invention current is programmed to flow through the two coils 2 and 7, in the one direction or the other, in a sequence such that the permanentmagnet armature 4 is lifted and lowered, opening and closing the valve, in the desired time-based alternation. CLAIMS
1. An electromagnetic intermittent fuel-injection valve for delivering fuel into the intake passage of an internal combustion engine, with a fuel outlet situated between a fuel inlet connection and a fuel return connection; the open cross section of the fuel outlet being controlled by a valve body in the form of a permanent magnet which, in opening the valve, is lifted off its seat by a magnetic field created by an electromagnet comprising an electric coil mounted on a soft-iron core; the flux lines of the magnetic field being guided by a soft-iron magnetic flux guide which forms a portion of the housing of the valve, an wherein, opposite this first coil 2 mounted on the first soft-iron core 1, there is a second electric coil 7 mounted on a second soft-iron core 6 and also acting on the permanent-magnet armature 4, the permanent-magnet armature 4 being situated between the two soft-iron cores 1 and 6.
2. A fuel-injection valve as claimed in Claim 1, wherein the second soft-iron core 6 is equipped with a valve seat 9 for the permanent-magnet armature 4, and with a fuel outlet nozzle 10.
3. A fuel-injection valve as claimed in Claim 2, wherein the second soft-iron core 6 contains a non-magnetic insert 8 which forms a valve seat 9, and also contains a fuel-outlet nozzle 10.
4. A fuel-injection valve as claimed in Claim 1, wherein, in agreement with the orientation of the two poles. of the permanent-magnet armature 4, electric currents flow through the two coils 2 and 7 in directions such that two magnetic fields are created, the one attracting the armature 4, the other repelling it.
5. A fuel-injection valve as claimed in Claim 1, wherein, with the engine running but when no flow of fuel is desired, such as when the vehicle is overrunning the engine, electric current flows over at least one of the coils 7 in a direction such that, due to the polar orientation of the permanent-magnet armature 4, the armature 4 is held down on its valve seat 6, holding the valve closed.
6. A fuel-injection valve as claimed in Claim 1, wherein, in agreement with the orientation of the two poles of the permanent-magnet armature 4, current flows through the two coils 2 and 7 in alternation, creating alternating magnetic fields, one of which influences the armature 4 to move in the valve-opening direction, the other in the valve-closing direction.
7. A fuel-injection valve as claimed in Claim 1, and substantially as described with reference to the accompanying drawing.
GB08610223A 1985-05-10 1986-04-25 Electromagnetic intermittent fuel-injection valve Expired GB2175452B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19853516917 DE3516917A1 (en) 1985-05-10 1985-05-10 ELECTROMAGNETIC, INTERMITTENT INJECTION VALVE

Publications (3)

Publication Number Publication Date
GB8610223D0 GB8610223D0 (en) 1986-05-29
GB2175452A true GB2175452A (en) 1986-11-26
GB2175452B GB2175452B (en) 1988-07-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
GB08610223A Expired GB2175452B (en) 1985-05-10 1986-04-25 Electromagnetic intermittent fuel-injection valve

Country Status (5)

Country Link
JP (1) JPS61261655A (en)
DE (1) DE3516917A1 (en)
FR (1) FR2581705A1 (en)
GB (1) GB2175452B (en)
IT (1) IT1191282B (en)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4848725A (en) * 1988-01-04 1989-07-18 Interface, Inc. Valve construction
EP0360569A2 (en) * 1988-09-21 1990-03-28 Caradon Mira Limited Flow control device
DE3834446A1 (en) * 1988-10-10 1990-04-12 Mesenich Gerhard ELECTROMAGNETIC INJECTION VALVE IN CARTRIDGE DESIGN
DE3834444A1 (en) * 1988-10-10 1990-04-12 Mesenich Gerhard ELECTROMAGNETIC INJECTION VALVE WITH DIAPHRAGM SPRING
GB2228831A (en) * 1989-03-03 1990-09-05 Ped Ltd Bistable actuator and fluid control valve incorporating said actuator
US5022629A (en) * 1988-01-04 1991-06-11 Interface, Inc. Valve construction
WO1991010242A2 (en) * 1989-12-22 1991-07-11 Square D Company (Deutschland) Gmbh Magnetic drive with permanent-magnet solenoid armature
GB2243488A (en) * 1990-04-23 1991-10-30 Festo Kg Solenoid valves
EP0485501A1 (en) * 1989-07-31 1992-05-20 Solatrol, Inc. High efficiency, flux-path-switching, electromagnetic actuator
DE4111886A1 (en) * 1991-04-09 1992-10-15 Mannesmann Ag MAGNETIC VALVE
US5190223A (en) * 1988-10-10 1993-03-02 Siemens Automotive L.P. Electromagnetic fuel injector with cartridge embodiment
DE29722781U1 (en) * 1997-12-23 1999-04-22 Bürkert Werke GmbH & Co., 74653 Ingelfingen Electromagnetic drive
EP1021652A1 (en) * 1997-10-07 2000-07-26 Gas Injection Technologies Pty. Ltd Vapour fuel injection valve
EP1336747A2 (en) * 2002-02-18 2003-08-20 POLIAUTO di P. Parietti &amp; C. S.n.c. Electrical injector for gaseous fuel
WO2007141672A1 (en) * 2006-06-09 2007-12-13 A.E.B. S.R.L. Fuel injector
DE102008060483A1 (en) * 2008-12-05 2010-06-10 Honeywell Technologies S.A.R.L. Servo valve of a gas regulator
EP2339681A1 (en) * 2009-12-18 2011-06-29 Bayerische Motoren Werke Aktiengesellschaft Electromagnetic actuator
FR3026777A1 (en) * 2014-10-03 2016-04-08 Peugeot Citroen Automobiles Sa ELECTROMAGNETIC COOLING ACTUATOR FOR INTERNAL COMBUSTION ENGINE VALVE
US9689361B2 (en) 2011-06-14 2017-06-27 Sentec Ltd. Method of operating a fuel injector, a control unit that performs the method, and a system that includes the control unit

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3703615A1 (en) * 1987-02-06 1988-08-18 Bosch Gmbh Robert FUEL INJECTION VALVE
JP2582212Y2 (en) * 1992-05-08 1998-09-30 本田技研工業株式会社 Electromagnetic fuel injection device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB949603A (en) * 1959-01-02 1964-02-12 Dowty Electrics Ltd Improvements in magnetic locking devices
GB1391955A (en) * 1972-07-12 1975-04-23 British Leyland Austin Morris Actuating internal combustion engine poppet valves
GB2077959A (en) * 1980-02-26 1981-12-23 Cts Corp Automatic control of air/fuel ratio
EP0118591A1 (en) * 1983-03-04 1984-09-19 Klöckner, Wolfgang, Dr. Process and device for activating an electromagnetic positioner
GB2139816A (en) * 1983-03-01 1984-11-14 Fev Forsch Energietech Verbr Electromagnetic actuator operating at or near the natural frequency of a spring-mass system

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Publication number Priority date Publication date Assignee Title
DE410444C (en) * 1923-01-17 1925-03-09 Louis Renault Electromagnetic control for the injection device of internal combustion engines
DE2150099A1 (en) * 1970-10-07 1972-05-25 Hitachi Ltd Fuel injection system
US3738578A (en) * 1971-10-04 1973-06-12 Gen Motors Corp Permanent magnet armature valve
DE3026133A1 (en) * 1980-07-10 1982-02-18 Robert Bosch Gmbh, 7000 Stuttgart ELECTROMAGNETIC VALVE
JPS57124089A (en) * 1981-01-26 1982-08-02 Hitachi Ltd Pump operation control method
FR2548329B1 (en) * 1983-06-30 1986-06-20 Bosteels Michel DEVICE FOR CONTROLLING CALIBRATED FLOW RATES

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB949603A (en) * 1959-01-02 1964-02-12 Dowty Electrics Ltd Improvements in magnetic locking devices
GB1391955A (en) * 1972-07-12 1975-04-23 British Leyland Austin Morris Actuating internal combustion engine poppet valves
GB2077959A (en) * 1980-02-26 1981-12-23 Cts Corp Automatic control of air/fuel ratio
GB2139816A (en) * 1983-03-01 1984-11-14 Fev Forsch Energietech Verbr Electromagnetic actuator operating at or near the natural frequency of a spring-mass system
EP0118591A1 (en) * 1983-03-04 1984-09-19 Klöckner, Wolfgang, Dr. Process and device for activating an electromagnetic positioner

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5022629A (en) * 1988-01-04 1991-06-11 Interface, Inc. Valve construction
US4848725A (en) * 1988-01-04 1989-07-18 Interface, Inc. Valve construction
EP0360569A2 (en) * 1988-09-21 1990-03-28 Caradon Mira Limited Flow control device
GB2225837B (en) * 1988-09-21 1992-09-23 Caradon Mira Ltd Flow control device
GB2225837A (en) * 1988-09-21 1990-06-13 Caradon Mira Ltd Flow control device
EP0360569A3 (en) * 1988-09-21 1991-07-03 Caradon Mira Limited Flow control device
DE3834444A1 (en) * 1988-10-10 1990-04-12 Mesenich Gerhard ELECTROMAGNETIC INJECTION VALVE WITH DIAPHRAGM SPRING
US5044563A (en) * 1988-10-10 1991-09-03 Siemens Automotive L. P. Electromagnetic fuel injector with diaphragm spring
US5190223A (en) * 1988-10-10 1993-03-02 Siemens Automotive L.P. Electromagnetic fuel injector with cartridge embodiment
DE3834446A1 (en) * 1988-10-10 1990-04-12 Mesenich Gerhard ELECTROMAGNETIC INJECTION VALVE IN CARTRIDGE DESIGN
GB2228831A (en) * 1989-03-03 1990-09-05 Ped Ltd Bistable actuator and fluid control valve incorporating said actuator
EP0485501A4 (en) * 1989-07-31 1993-06-02 Solatrol, Inc. High efficiency, flux-path-switching, electromagnetic actuator
EP0485501A1 (en) * 1989-07-31 1992-05-20 Solatrol, Inc. High efficiency, flux-path-switching, electromagnetic actuator
WO1991010242A2 (en) * 1989-12-22 1991-07-11 Square D Company (Deutschland) Gmbh Magnetic drive with permanent-magnet solenoid armature
WO1991010242A3 (en) * 1989-12-22 1992-06-25 Square D Deutschland Magnetic drive with permanent-magnet solenoid armature
US5394131A (en) * 1989-12-22 1995-02-28 Cornelius Lungu Magnetic drive with a permanent-magnet armature
GB2243488A (en) * 1990-04-23 1991-10-30 Festo Kg Solenoid valves
GB2243488B (en) * 1990-04-23 1994-11-23 Festo Kg A solenoid valve
DE4111886A1 (en) * 1991-04-09 1992-10-15 Mannesmann Ag MAGNETIC VALVE
EP1021652A1 (en) * 1997-10-07 2000-07-26 Gas Injection Technologies Pty. Ltd Vapour fuel injection valve
EP1021652A4 (en) * 1997-10-07 2005-11-02 Gas Injection Technologies Pty Vapour fuel injection valve
DE29722781U1 (en) * 1997-12-23 1999-04-22 Bürkert Werke GmbH & Co., 74653 Ingelfingen Electromagnetic drive
EP1336747A2 (en) * 2002-02-18 2003-08-20 POLIAUTO di P. Parietti &amp; C. S.n.c. Electrical injector for gaseous fuel
EP1336747A3 (en) * 2002-02-18 2004-10-20 POLIAUTO di P. Parietti &amp; C. S.n.c. Electrical injector for gaseous fuel
WO2007141672A1 (en) * 2006-06-09 2007-12-13 A.E.B. S.R.L. Fuel injector
AU2007257609B2 (en) * 2006-06-09 2012-07-19 A.E.B. S.P.A. Fuel injector
DE102008060483A1 (en) * 2008-12-05 2010-06-10 Honeywell Technologies S.A.R.L. Servo valve of a gas regulator
EP2339681A1 (en) * 2009-12-18 2011-06-29 Bayerische Motoren Werke Aktiengesellschaft Electromagnetic actuator
US9689361B2 (en) 2011-06-14 2017-06-27 Sentec Ltd. Method of operating a fuel injector, a control unit that performs the method, and a system that includes the control unit
FR3026777A1 (en) * 2014-10-03 2016-04-08 Peugeot Citroen Automobiles Sa ELECTROMAGNETIC COOLING ACTUATOR FOR INTERNAL COMBUSTION ENGINE VALVE

Also Published As

Publication number Publication date
DE3516917A1 (en) 1986-11-13
GB2175452B (en) 1988-07-06
IT8647758A0 (en) 1986-03-12
IT1191282B (en) 1988-02-24
GB8610223D0 (en) 1986-05-29
JPS61261655A (en) 1986-11-19
FR2581705A1 (en) 1986-11-14

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PCNP Patent ceased through non-payment of renewal fee