DE1919708A1 - Solenoid valve for short response times - Google Patents
Solenoid valve for short response timesInfo
- Publication number
- DE1919708A1 DE1919708A1 DE19691919708 DE1919708A DE1919708A1 DE 1919708 A1 DE1919708 A1 DE 1919708A1 DE 19691919708 DE19691919708 DE 19691919708 DE 1919708 A DE1919708 A DE 1919708A DE 1919708 A1 DE1919708 A1 DE 1919708A1
- Authority
- DE
- Germany
- Prior art keywords
- disc
- solenoid valve
- armature
- response times
- magnets
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
-
- 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
-
- 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
- F02M51/0628—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a stepped armature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0651—One-way valve the fluid passing through the solenoid coil
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
-
- 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
- H01F7/1653—Magnetic circuit having axially spaced pole-pieces
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Power Engineering (AREA)
- Magnetically Actuated Valves (AREA)
- Electromagnets (AREA)
Description
E 94-50E 94-50
10.4.1969 Cl/DgApril 10, 1969 Cl / Dg
Anlage zur Patent- vsA *^™Λτ λ,,«~
fi-t.. ~ ,..I1UIiIi-L-I^1-InI f«_. AnmeldungAnnex to the patent vsA * ^ ™ Λ τ λ ,, «~
fi-t .. ~, .. I 1 UIiIi-LI ^ 1 -I nI f «_. Sign up
.. ~ ,..I1UIiIiL-I^1-In .. ~, .. I 1 UIiIiL-I ^ 1 -I n
X Cl LRsZX OiULLO UClUX X Cl LRsZX OiULLO UClUX
I f«_. I f «_.
Die Erfindung bezieht sich auf ein Magnetventil für kurze Ansprechzeiten, das eine Arbeitswicklung, einen aus ferromagnetischem Material bestehenden Anker und ein mit diesem Anker verbundenen, den Öffnungsquerschnitt des Venbiles absperrenden Schließkörper aufweist.The invention relates to a solenoid valve for short response times, which has a working winding, one made of ferromagnetic Material existing anchor and a connected to this anchor, shut off the opening cross-section of the valve Has closing body.
- 2 009846/0 484- 2 009846/0 484
Robert Bosch GmbH R 94-50 Cl/DgRobert Bosch GmbH R 94-50 Cl / Dg
StuttgartStuttgart
Bei der Entwicklung der elektronisch gesteuerten Benzineinspritzung für hochtourig laufende Brennkraftmaschinen sind Magnetventile mit kurzen Ansprechzeiten besonders vorteilhaft zu verwenden. Es sind derartige Magnetventile mit folgenden Konstruktionsmerkmalen bekannt: Das Verhältnis der Ventilkörpermasse zur Ankermasse ist klein, das Verhältnis der Magnetpolflächen ist groß gegenüber der Ankermasse, die verwendeten Magnefcwerkstoffe haben möglichst niedrige Remanenzinduktionen und die Arbeitswicklung ist möglichst induktivität sarm.During the development of the electronically controlled gasoline injection For high-speed internal combustion engines, solenoid valves with short response times are particularly advantageous to use. Such solenoid valves are known with the following design features: The ratio of the valve body mass to the armature mass is small, the ratio of the magnetic pole surfaces is large compared to the armature mass that is used Magnetic materials have the lowest possible remanent induction and the working winding is as inductive as possible sarm.
Der Erfindung liegt die Aufgabe zugrunde, ein Magnetventil zu schaffen, dessen öffnungs- und Schließzeiten über das mit den bekannten Maßnahmen erzielbare Maß hinaus besonders kurz sind.The invention is based on the object of creating a solenoid valve whose opening and closing times over the the known measures that can be achieved are particularly short.
Die Lösung der Aufgabe bestehb bei einem Magnetventil der eingangsgenannten Art darin, daß die Arbeitswicklung aus einer Vielzahl von Scheibenwicklungen besteht, die eine entsprechende Anzahl von Scheibenelektromagneten bilden und daß die Feldkräfte der Scheibenelektromagnete auf einen genuteben Anker angreifen, dessen Nutenzahl der Polzahl der Magnete entspricht. Weiterbildungen und zweckmäßige Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen in Verbindung mit dem nachstehend beschriebenen und in der Zeichnung dargestellten Ausführungsbeispiel.The solution to the problem consists in a solenoid valve of the type mentioned in that the working winding consists of a There is a plurality of disc windings which form a corresponding number of disc electromagnets and that the field forces of the disk electromagnet attack a straight armature, the number of slots of which is the number of poles of the magnets is equivalent to. Further developments and expedient refinements of the invention emerge from the subclaims in Connection with the embodiment described below and shown in the drawing.
Die Fig. zeigt einen Querschnitt durch ein schematisch vereinfachtes erfindungsgemäßes Magnetventil.The figure shows a cross section through a schematically simplified solenoid valve according to the invention.
Die Arbeitswicklung des Magnetventil es besteht aus einer Vielzahl von Scheibenwicklungen 10. Zwischen Jeder der Scheiben-The working winding of the solenoid valve it consists of a multitude of disc windings 10. Between each of the disc windings
— 3 —- 3 -
009846/0484009846/0484
Robert Bosch GmbH R 94-50 Cl/DgRobert Bosch GmbH R 94-50 Cl / Dg
StuttgartStuttgart
wicklungen 10 ist eine aus ferromagnetischem Material bestehende Scheibe 11 eingelegt, und die Wicklungen sind dabei so ausgebildet, daß die Polarität der magnetischen Feldstärke von Scheibe zu Scheibe wechselt. Die Scheibenwicklungen umschließen einen zylindrischen Hohlraum, in dem ein Anker 12 axial beweglich gleitet. Der Anker 12 ist als Hohlzylinder ausgebildet und ist auf einen Führungszylinder 13 aufgesteckt, auf dem er sich axial bewegen kann. Der Fürungssylinder 13 ist ebenfalls als Hohlzylinder ausgebildet und ist an seinem oberen Teil mit dem Ventilgehäuse verbunden. Das Ventilgehäuse besteht aus einem zylindrischen Mittelteil14 in dem die Scheibenmagnete und der vom Magnetfeld durchflutete Seil des Ankers angeordnet ist. An den zylindrischen Mittelteil 14 ist einspritzseitig ein Fortsatz 15 angebracht, an dessen unterem Ende sich der Öffnungsquerschnitt 16, durch den der einzuspritzende Kraftstoff austritt, befindet. Der Öffnungsquerschnitt 16 wird bei unerregten Arbeitswicklungen des Magnetventiles von einem mit dem Anker 12 verbundenen Schließkörper 17 verschlossen, da zwischen dem Anker 12 und einem oberen in den zylindrischen Mittelteil des Ventilgehäuses hineinragenden Deckel 18 eine Feder 19 wirkt. An dem Deckel ist ein Stutzen 20 angebracht,an dem eine nicht in der Fig. dargestellte Kraftstoffzuleitung anschraubbar ist. Der einzuspritzende Kraftstoff tritt durch den Stutzen 20 und den Deckel 18 hindurch, und gelangt durch das Innere des Führungszylinders 13 in den Fortsatz 15 und von dort aus zu dem bei erregten Scheibenmagneten geöffneten Öffnungsquerschnitt Der Deckel 18 ist mit Hilfe einer Ringmutter 21 gegen die Scheibenwicklung 10 gepreßt, so daß diese Wicklungen und die dazwischen angeordneten ferromagnetischen Scheiben 11 damit befestigt werden. Die Ringmutter 21 wird dabei in ein Gewinde eingeschraubt, das an der inneren Mantelfläche des sylindri-windings 10 is made of ferromagnetic material Disc 11 inserted, and the windings are designed so that the polarity of the magnetic field strength changes from disc to disc. The disc windings enclose a cylindrical cavity in which an armature 12 slides axially movable. The armature 12 is designed as a hollow cylinder and is mounted on a guide cylinder 13 attached, on which it can move axially. The Fürungssylinder 13 is also designed as a hollow cylinder and is connected to the valve housing at its upper part. The valve housing consists of a cylindrical central part14 in which the disc magnets and the magnetic field flow through Rope of the anchor is arranged. An extension 15 is attached to the cylindrical central part 14 on the injection side the lower end of which is the opening cross section 16 through which the fuel to be injected exits. The opening cross-section 16 is unexcited work windings of the Solenoid valve closed by a closing body 17 connected to the armature 12, since between the armature 12 and a A spring 19 acts on the upper cover 18 protruding into the cylindrical middle part of the valve housing. On the lid a nozzle 20 is attached to which a not shown in Fig. fuel supply line shown can be screwed on. The one to be injected Fuel passes through the nozzle 20 and the cover 18 and passes through the interior of the guide cylinder 13 into the extension 15 and from there to the energized disc magnet opened opening cross-section The cover 18 is with the help of a ring nut 21 against the Disc winding 10 pressed, so that these windings and the ferromagnetic discs 11 arranged between them with it be attached. The ring nut 21 is screwed into a thread that is attached to the inner surface of the cylindrical
00984R/CU8400984R / CU84
Robert Bosch GmbH R 9450 Cl/DgRobert Bosch GmbH R 9450 Cl / Dg
Stuttgart ■' ·Stuttgart ■ '·
sehen Mittelteiles 14 des Ventilgehäuses eingeschnitten ist. An dem Deckel 18 ist ebenfalls der Führungszylinderi3 für den Anker 12 befestigt. Die zu den Scheibenwicklungen hin gerichtete Oberfläche des Ankers 12 ist genutet; die Anzahl der Nuten entspricht dabei der Anzahl der eingelegten ferromagnetisehen Scheiben bzw. der Anzahl der Scheibenmagnete. Die Zuleitungen zu den einzelnen Scheibenwicklungen sind einerseits an eine Buchse 22 geführt und andererseits bei 23 mit dem Gehäuse des Magnetventiles verbunden^ das seinerseits im eingebauten Zustand mit Masse verbunden ist.see middle part 14 of the valve housing cut is. The guide cylinder i3 is also on the cover 18 attached for the anchor 12. The surface of the armature 12 directed towards the disc windings is grooved; the The number of grooves corresponds to the number of inserted ferromagnetic disks or the number of Disc magnets. The supply lines to the individual disc windings are on the one hand led to a socket 22 and on the other hand connected at 23 to the housing of the solenoid valve ^ which in turn is connected to ground when installed.
Bas dargestellte Magnetventil arbeitet folgendermaßen: Zwischen jeweils zwei benachbarten Scheiben bilden sich bei stromdurchflossenen Scheibenmagneten die beiden Pole eines Elektromagneten aus. Der magnetische Kraftfluß tritt dabei von einer der aus ferromagnetisehen Material bestehenden Scheiben 11 aus, von dort geht er in eine im unerregten Zustand noch etwas versetzt dazu angeordnete Ankernut über, tritt aus der nächst benachbarten Ankernut wieder aus und in die entsprechende nächst benachbarte aus ferromagnetisehen Material bestehende Scheibe 11 ein. Jeder Scheibenmagnet bildet einen magnetischen Kreis, so daß das System Scheibenmagnet - genuteter Anker als eine Vielzahl von abgewickelten Drehmagneten betrachtet und berechnet werden kann. Ist der Anker voll aus seiner Ruhestellung gegen die Kraft der Feder19 angezogen, so stehen sich die Nuten des Ankers und die Scheiben 11 der Scheibenmagneten etwa gegenüber. Bei dem erfindungsgemäßen Magnetventil greifen die Magnetkräfte auf der gesamten Außenfläche des Ankers 12 an, und nicht, wie bei den Magnetventilen üblicher Bauart, nur auf der Querschnittsfläche des Ankers. Auf Grund der beschriebenen konstruktiven Maßnahmen lassen sich somit sehr kurze Ansprechzeiten bei Magnetventilen erzielen.The solenoid valve shown works as follows: With current-carrying disk magnets, the two poles of one form between two adjacent disks Electromagnet off. The magnetic flux occurs from one of the ferromagnetic material Discs 11 from, from there it goes into an anchor groove that is slightly offset from it in the unexcited state, emerges from the next adjacent anchor groove and into the corresponding next adjacent one from ferromagnetism Material existing disc 11 a. Each disc magnet forms a magnetic circuit, making the system disc magnet - Grooved armature can be viewed and calculated as a large number of unwound rotary magnets. Is the Armature fully pulled out of its rest position against the force of the spring19, the grooves of the armature and the Discs 11 of the disc magnets approximately opposite. In the solenoid valve according to the invention, the magnetic forces act the entire outer surface of the armature 12, and not, as in the case of the solenoid valves of conventional design, only on the cross-sectional area of the armature. Due to the described constructive Measures can thus be achieved with very short response times for solenoid valves.
009846/0484009846/0484
Claims (4)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19691919708 DE1919708A1 (en) | 1969-04-18 | 1969-04-18 | Solenoid valve for short response times |
CH358570A CH498325A (en) | 1969-04-18 | 1970-03-11 | Solenoid valve for short response times |
US31046A US3625477A (en) | 1969-04-18 | 1970-04-07 | Magnetic valve with grooved armature surrounded by discrete disc-shaped annular windings |
JP45031625A JPS4941055B1 (en) | 1969-04-18 | 1970-04-15 | |
GB1835570A GB1305437A (en) | 1969-04-18 | 1970-04-17 | |
FR7014249A FR2045501A5 (en) | 1969-04-18 | 1970-04-20 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19691919708 DE1919708A1 (en) | 1969-04-18 | 1969-04-18 | Solenoid valve for short response times |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1919708A1 true DE1919708A1 (en) | 1970-11-12 |
Family
ID=5731571
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19691919708 Pending DE1919708A1 (en) | 1969-04-18 | 1969-04-18 | Solenoid valve for short response times |
Country Status (6)
Country | Link |
---|---|
US (1) | US3625477A (en) |
JP (1) | JPS4941055B1 (en) |
CH (1) | CH498325A (en) |
DE (1) | DE1919708A1 (en) |
FR (1) | FR2045501A5 (en) |
GB (1) | GB1305437A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4156506A (en) * | 1977-03-26 | 1979-05-29 | Lucas Industries, Limited | Fuel injection nozzle units |
EP0013543A1 (en) * | 1978-12-11 | 1980-07-23 | Giovanni Battista Ricci | A construction member for building inner and/or bearing walls or the like |
DE2940349A1 (en) * | 1979-10-04 | 1981-04-09 | Power Industrieplanung AG, Zürich | Universal prefab wall slab - comprises panels of various materials combining to provide cavities |
FR2714444A1 (en) * | 1993-12-23 | 1995-06-30 | Rahban Thierry | Lift-valve with wide aperture and short travel |
EP2647825A1 (en) * | 2012-04-02 | 2013-10-09 | Robert Bosch Gmbh | High-pressure pump for a fuel injection system |
DE102016206314A1 (en) * | 2016-04-14 | 2017-10-19 | Robert Bosch Gmbh | fuel Injector |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2349584C2 (en) * | 1973-10-03 | 1984-08-23 | Robert Bosch Gmbh, 7000 Stuttgart | Electromagnetically actuated fuel injection valve for time-controlled low-pressure injection systems of internal combustion engines with manifold injection |
JPS5597582A (en) * | 1979-01-19 | 1980-07-24 | Aisin Seiki Co Ltd | Proportional control electromagnetic valve |
GB2053575B (en) * | 1979-07-06 | 1983-04-13 | Lucas Industries Ltd | Solenoid-actuated valves |
US4326139A (en) * | 1979-09-08 | 1982-04-20 | Lucas Industries Limited | Electromagnetic devices |
JPS5671951U (en) * | 1979-11-07 | 1981-06-13 | ||
GB8305408D0 (en) * | 1983-02-26 | 1983-03-30 | Lucas Ind Plc | Fluid control valves |
DE8336759U1 (en) * | 1983-04-11 | 1985-11-28 | F & O Electronic Systems GmbH & Co, 6901 Neckarsteinach | Shock absorbers with adjustable damping characteristics |
IT220460Z2 (en) * | 1990-06-29 | 1993-09-22 | Weber Srl | IMPROVEMENT OF ELECTROMAGNETICALLY OPERATED FUEL DOSING AND PULVERIZING VALVES FOR A SUPPLY DEVICE FOR AN INTERNAL COMBUSTION ENGINE. |
US5114077A (en) * | 1990-12-12 | 1992-05-19 | Siemens Automotive L.P. | Fuel injector end cap |
US5328100A (en) * | 1992-09-22 | 1994-07-12 | Siemens Automotive L.P. | Modified armature for low noise injector |
FR2807136A1 (en) * | 2000-03-29 | 2001-10-05 | Herve Carisey | Electrically operated valve, for remote control of central heating system, includes double electromagnetic capable of operation by current pulse |
US7789325B2 (en) * | 2007-01-23 | 2010-09-07 | Spraying Systems Co. | Air atomizing spray nozzle with magnetically actuated shutoff valve |
US8191857B2 (en) * | 2008-10-09 | 2012-06-05 | Parker-Hannifin Corporation | Linear motor valve |
DE102022209089A1 (en) * | 2022-09-01 | 2024-03-07 | Robert Bosch Gesellschaft mit beschränkter Haftung | Electromagnetically controllable fuel valve, method for operating the electromagnetically controllable fuel valve |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2102034A (en) * | 1934-04-16 | 1937-12-14 | Louis H Roller | Valve |
US2196120A (en) * | 1937-09-09 | 1940-04-02 | Arthur L Parker | Valve mechanism |
US2637344A (en) * | 1949-08-22 | 1953-05-05 | Milwaukee Gas Specialty Co | Electroinductively actuated valve |
US3190608A (en) * | 1962-02-07 | 1965-06-22 | Kromschroeder Ag G | Electromagnetically controlled valve |
-
1969
- 1969-04-18 DE DE19691919708 patent/DE1919708A1/en active Pending
-
1970
- 1970-03-11 CH CH358570A patent/CH498325A/en not_active IP Right Cessation
- 1970-04-07 US US31046A patent/US3625477A/en not_active Expired - Lifetime
- 1970-04-15 JP JP45031625A patent/JPS4941055B1/ja active Pending
- 1970-04-17 GB GB1835570A patent/GB1305437A/en not_active Expired
- 1970-04-20 FR FR7014249A patent/FR2045501A5/fr not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4156506A (en) * | 1977-03-26 | 1979-05-29 | Lucas Industries, Limited | Fuel injection nozzle units |
EP0013543A1 (en) * | 1978-12-11 | 1980-07-23 | Giovanni Battista Ricci | A construction member for building inner and/or bearing walls or the like |
DE2940349A1 (en) * | 1979-10-04 | 1981-04-09 | Power Industrieplanung AG, Zürich | Universal prefab wall slab - comprises panels of various materials combining to provide cavities |
FR2714444A1 (en) * | 1993-12-23 | 1995-06-30 | Rahban Thierry | Lift-valve with wide aperture and short travel |
EP2647825A1 (en) * | 2012-04-02 | 2013-10-09 | Robert Bosch Gmbh | High-pressure pump for a fuel injection system |
DE102016206314A1 (en) * | 2016-04-14 | 2017-10-19 | Robert Bosch Gmbh | fuel Injector |
DE102016206314B4 (en) | 2016-04-14 | 2018-12-27 | Robert Bosch Gmbh | fuel Injector |
Also Published As
Publication number | Publication date |
---|---|
CH498325A (en) | 1970-10-31 |
GB1305437A (en) | 1973-01-31 |
US3625477A (en) | 1971-12-07 |
JPS4941055B1 (en) | 1974-11-07 |
FR2045501A5 (en) | 1971-02-26 |
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