GB2153907A - Solenoid valve constituting an on-off switch - Google Patents
Solenoid valve constituting an on-off switch Download PDFInfo
- Publication number
- GB2153907A GB2153907A GB08430978A GB8430978A GB2153907A GB 2153907 A GB2153907 A GB 2153907A GB 08430978 A GB08430978 A GB 08430978A GB 8430978 A GB8430978 A GB 8430978A GB 2153907 A GB2153907 A GB 2153907A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- solenoid valve
- insulation layer
- solenoid
- insulation
- 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.)
- Withdrawn
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
- F16K31/0658—Armature and valve member being one single element
-
- 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
- F02M51/0667—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 acting as a valve or having a short valve body attached thereto
-
- 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
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
- F02M65/005—Measuring or detecting injection-valve lift, e.g. to determine injection timing
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
In a solenoid valve (1) having a valve member (3) of conductive material and a conductive casing (2), (9) having a guide hole (13a) for guiding the valve member (3), an insulation layer (18) is provided between the valve member (3) and the guide hole (13a) so as to constitute a switch which is ON when the valve (3) is seated on a valve seat (5) and OFF when the valve is separated from the valve seat. The insulation layer (18) may be a resin, a ceramic or one of Ta2O3, Si3N4, ZrO2, SiO2 and Al2O3. <IMAGE>
Description
SPECIFICATION
Solenoid valve
The present invention relates to a solenoid valve, and more particularly to a solenoid valve having an ON-OFF switch constituted by a valve and an associated valve seat.
Description of the Prior Art
In the prior art, to obtain an electric signal indicating the opening/closing state of a valve device, solenoid valves in which an ON-OFF switch is constituted by a valve and the associated valve seat are widely used. Such a solenoid valve is needed, for example, for constituting a solenoid valve driving circuit in which the driving pulse applied to the solenoid valve is corrected in response to the timing of opening/closing of the solenoid valve in order to make the open/close timing of the solenoid valve coincide with a target timing.
As such a valve device, there is disclosed for example in USP No. 4111178 (corresponding to ED OS 2748447) a fuel injection valve in which a mechanical switch is constituted by a needle valve and a nozzle body in order to obtain an electric signal indicating the timing of the beginning of fuel injection and the timing of the end of fuel injection in response to the movement of the needle valve. In the disclosed fuel injection valve, a nozzle body and a needle valve smoothly moving in the guide hole of the nozzle body are formed of an electrically conductive material and the outer surface of the needle valve is covered with a ceramic insulation film of a thickness between approximately 0.2 it and 0.3 , or an insulation film formed by the sputtering of aluminum oxide.
However, when the ceramic thin film is used as the insulation film the durability is insufficient and when the insulation layer formed by the sputtering of aluminum oxide is used the insulation film is liable to peel off from the outer surface of the needle valve. In either case, consequently, stable use over long periods is impossible.
It is an object of the present invention to provide an improved solenoid valve having an
ON-OFF switch.
It is another object of the present invention to provide a solenoid valve having an ON-OFF switch constituted by a valve and an associated valve seat, wherein the insulated state between the valve and the guide surface of the member for guiding the valve can be maintained in stable condition over a long period.
According to the present invention, in a solenoid valve having a valve made of a conductive material and a conductive casing having a guide means for guiding the valve and a valve seat associated with the valve, the solenoid valve comprises an insulation layer provided between the valve and the guide means so as to constitute a switch which assumes the ON state when the valve is seated on the valve seat and assumes the OFF state when the valve is separated from the valve seat and the insulation layer is made of a highly durable insulation material.
The insulation layer may be formed by subjecting the outer surface of the valve to an insulating process employing the ion-plating method.
When an insulation layer of SiO2 or the like is formed on the outer surface of the valve by the ion-plating method, since the ionized insulation material is bonded to the valve with high kinetic energy due to the applied voltage, the insulation layer is formed at a high density and is strongly bonded to the base metal, namely, the valve. Therefore, the insulation layer has high durability and maintains its insulating effect for a long time. Furthermore, by the ion-plating method, the control of the thickness of the insulating film can be relatively easily carried out by adjusting the level of the applied voltage and the period over which the voltage is applied so that the quality of the insulating film can be easily and reliably controlled. As a result, it is possible to manufacture the valve with high dimensional accuracy.
The insulation layer may also be formed as a ceramic sleeve fitted on the surface of the valve or be formed on the surface of the valve by the use of an insulating resin having high durability. For example, polyphenylene sulfide (PPS) may be used as such a resin.
According to the present invention, since an insulation layer made of an insulating material having high durability is provided on the outer surface of the valve, a solenoid valve having a high reliability switch with long service life can be obtained.
The invention will be better understood and the other objects and advantages thereof will be more apparent from the following detailed description of a preferred embodiment with reference to the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a cross-sectional view of a solenoid valve in accordance with the present invention.
Figure 2 is a perspective view, partially cut away, of a valve and associated insulation layer for use in the solenoid valve of Figure 1.
Figure 3 is a side view, partially in section, of another valve and associated insulation layer for use in the solenoid valve of Figure 1.
DESCRIPTION OF THE PREFERRED EMBODI
MENTS
Fig. 1 shows a cross-sectional view of an embodiment of a solenoid valve according to the present invention. A solenoid valve 1 has a lower casing 2, a valve 3 made of a conductive material such as steel and a driving section 4 which is fixed to the lower casing 2 and electromagnetically drives the valve 3. In the lower casing 2, which is made of a conductive material, there are formed a valve seat 5 on which the valve 3 seats, an outlet port 7 communicated through the valve seat 5 with a chamber 6, and an inlet port 8 communicated with the chamber 6.
An upper casing 9 of the driving section 4 is fixed to the lower casing 2 by an appropriate fixing means (not shown) and liquid tight condition is maintained between the lower casing 2 and the upper casing 9 by an 0 ring
10 provided therebetween, whereby a casing 30 of the solenoid valve 1 is formed. A solenoid coil 1 2 wound on a bobbin 11 is mounted in the upper casing 9, and the valve 3 is slidably supported and guided by a cylindrical guide member 1 3 which is made of a non-magnetic metal material, such as brass, and disposed in the center portion of the bobbin 11.
An electrode 1 5 is fitted through an insulating sleeve 14 into the top end portion of the upper casing 9. One end of the electrode 1 5 is connected with a lead wire 1 6 and the other end of the electrode 1 5 is in contact with an expansion coil spring 1 7 received in a concave portion 3b of the valve 3. The valve 3 is urged downward by the coil spring 1 7 and the tip portion 3a of the valve 3 is pressed onto the valve seat 5 when no driving current flows through the solenoid coil 1 2 to close the solenoid valve 1.On the other hand, when the driving current flows through and energizes the solenoid coil 12, an electromagnetic force acts on the valve 3 causing it to move upward against the force of the coil spring 1 7. As a result, the tip portion 3a of the valve 3 separates from the valve seat 5 to open the solenoid valve 1.
Since both the valve 3 and the coil spring 1 7 are made of electrically conductive materials, the electrical contact state between the valve 3 and the electrode 1 5 can be maintained by the coil spring 1 7.
To constitute a switch by the valve 3 and the valve seat 5 utilizing the fact that when the solenoid valve 1 closes the valve 3 comes in contact with the valve seat 5 and when it opens the valve 3 separates from the valve seat 5, an insulation layer 1 8 is formed on the cylindrical outer surface 3c of the valve 3 for establishing a non-conductive state between the valve 3 and the guide surface 1 3a of the guide member 1 3 which is electrically connected with the upper casing 9.
Thus. when the insulation layer 18 is formed on the outer surface 3c of the valve 3 to establish the electrically non-conductive state between the guide member 1 3 and the valve 3, the non-conductive state between the valve 3 and the upper casing 9 can be also established when the solenoid valve 1 is opened so that the valve 3 is separated from the valve seat 5. Therefore, the lower casing 2 is electrically disconnected from the lead wire 16 when the solenoid valve 1 is open.
On the other hand, the lower casing 2 is electrically connected with the lead wire 1 6 when the solenoid valve 1 is closed. That is, a switch is constituted by the valve 3 and the associated valve seat 5 which is turned ON or
OFF in response to the open or closed state of the solenoid valve 1.
In this embodiment, a flange portion 14a is formed at the lower end portion of the insulation sleeve 14 to prevent the top end surface of the valve 3 from coming in contact with the upper casing 9 when the valve 3 is lifted at the time of energization of the solenoid coil 1 2. Alternatively, of course, an insulation layer may be provided on the top end surface 3d of the valve 3.
The insulation layer 18 may be formed by, for example, applying a coating of SiO2 on the outer surface 3c using the ion-plating method, one type of physical evaporating method.
When the ion-plating method is employed for coating the outer surface 3c of the valve 3 with an insulation material such as SiO2, Awl203 or the like, the insulation layer 1 8 is formed at a high density and is strongly bonded to the valve 3. Therefore, the insulation layer 1 8 has high durability and maintains its insulating effect for a long time.
As the material for the insulation layer 18, insulating materials such as Ta2O3, Si3N4, AIN,
ZrO2 are also usable in place of SiO2 or Al2O3.
To obtain an electric signal indicating the time at which the solenoid valve 1 is opened or closed, the lower casing 2 is grounded and the lead wire 1 6 is connected to a voltage source 32 through a resistor 31. With this circuit arrangement, a voltage signal is developed across the resistor 31 only when the valve 3 is seated on the valve seat 5. That is, since the valve 3 and the valve seat 5 constitute an ON-OFF switch which is closed when the solenoid valve 1 is closed, the current from the voltage source 32 flows through the resistor 31 and a voltage drop of a predetermined level develops across the resistor 31.
On the other hand, the electrical connection between the valve 3 and the valve seat 5, that is, between the valve 3 and the lower casing 2. is broken when the solenoid valve 1 is opened by the energization of the solenoid coil 1 2 and the current flow through the resistor 31 becomes zero so that the voltage developed across the resistor 31 becomes zero.
Thus, both the open and closed states of the solenoid valve 1 can be detected from the voltage developed across the resistor 31.
The insulation layer 1 8 can instead be formed by the high frequency excitation ionplating method, the cluster ion-beam method, the election beam smelting method, the hollow cathode method or the like.
In the embodiment described above, although the insulation layer 1 8 is formed by the ion-plating method, the insulation layer 18 can instead be provided by fitting a ceramic sleeve on the valve 3.
Fig. 2 shows a modification of the insulation layer for the valve 3. In this case, the insulation layer for establishing the electrical isolation between the valve 3 and the guide member 1 3 is formed by a cylindrical ceramic sleeve 41, which is fitted on the outer surface 3c of the large diameter portion of the valve 3 and fixed such as by an appropriate adhesive.
When the ceramic sleeve 41 is used as an insulation layer in place of the insulation layer 1 8 of Fig. 1, the formation of the insulation layer on the valve 3 is made easier, wear of the insulation layer is reduced, and adequate smoothness can be attained between the guide member 1 3 and the ceramic sleeve 41.
Since the ceramic sleeve 41 is considerably thicker than a mere ceramic film, it has excellent durability so that the reliability of the insulation portion is remarkably improved and the service life thereof becomes extremely long.
Fig. 3 shows another modification of the insulation layer for the valve 3 of Fig. 1. An insulating layer 43 made of highly durable insulating resin is integrally formed on the outer surface 3c of the valve 3 as shown in
Fig. 3, so as to insulate the outer surface 3c of the large diameter portion of the valve 3 from the guide surface 1 3a of the guide member 13. Concaves 21 and 22 are defined at the middle portion of the large diameter portion of the valve 3. Consequently, when the insulation layer 43 is integrally formed on the valve 3, it is not only formed on the outer surface 3c of the valve 3 but also enters into the concaves 21 and 22. As a result, the insulation layer 43 is physically integrated with the valve 3 in such a way that it cannot move around the valve 3. As the insulating resin of the insulating member 43 there can be used, for example, a resin having high durability such as polyphenylene sulfide (PPS).
When the insulating layer is made of an insulating resin such as a polyphenylene sulfide, it suffers little wear and provides sufficient smoothness in motion between the valve 3 and the guide member 1 3.
Claims (9)
1. A solenoid valve, comprising:
a valve made of a conductive material; a conductive casing having a guide means for guiding the valve and a valve seat associated with the valve;
and an insulation layer provided between the valve and the guide means so as to constitute a switch which is in O X state when the valve is seated on the valve seat and is in OFF state when the valve is separated from the valve seat, said insulation layer being made of a highly durable insulation material.
2. A solenoid valve as claimed in Claim 1, wherein said insulation layer is formed on the outer surface of the valve by a physical evaporation method.
3. A solenoid valve as claimed in Claim 2, wherein the physical evaporation method is an ion-plating method.
4. A solenoid valve as claimed in Claim 3, therein the valve is made of steel and a SiO2 layer is formed on the outer surface of the valve by an ion-plating method.
5. A solenoid valve as claimed in Claim 1, wherein said insulation layer is a ceramic sleeve fitted on the outer surface of the valve.
6. A solenoid valve as claimed in Claim 1, wherein said insulation layer is made of a highly durable insulating resin.
7. A solenoid valve as claimed in Claim 6, wherein said insulation resin is formed integrally with the valve on the outer surface thereof.
8. A solenoid valve as claimed in Claim 7, wherein at least one concave portion for receiving a part of the insulation resin when the insulation resin is coated on the outer surface of the valve is provided on the outer surface of the valve, whereby the insulation layer is prevented from moving on the outer surface of the valve.
9. A solenoid valve as claimed in Claims 6, 7 or 8, wherein the insulation resin is polyphenylene sulfide.
1 0. A solenoid valve as claimed in claim 1 and substantially as hereinbefore described with reference to, and as shown in the accompanying drawing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23431483A JPS60129483A (en) | 1983-12-14 | 1983-12-14 | Solenoid valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8430978D0 GB8430978D0 (en) | 1985-01-16 |
| GB2153907A true GB2153907A (en) | 1985-08-29 |
Family
ID=16969061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08430978A Withdrawn GB2153907A (en) | 1983-12-14 | 1984-12-07 | Solenoid valve constituting an on-off switch |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS60129483A (en) |
| DE (1) | DE3445721A1 (en) |
| GB (1) | GB2153907A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2171500A (en) * | 1985-02-27 | 1986-08-28 | Diesel Kiki Co | Solenoid valve |
| GB2178512A (en) * | 1985-07-18 | 1987-02-11 | Diesel Kiki Co | Solenoid valve |
| GB2320522A (en) * | 1996-12-18 | 1998-06-24 | Daimler Benz Ag | Device for determining the opening and closing times of a valve, eg i.c. engin inlet valve or fuel-injection valve |
| FR2773602A1 (en) * | 1998-01-13 | 1999-07-16 | Bitron Ind Espana | Adjustable electrovalve suitable for use with liquid high pressure hydrocarbons and with proportional relationship between applied electric current and regulated pressure |
| EP1018483A1 (en) * | 1998-10-19 | 2000-07-12 | Dresser Wayne Ab | Gas-thight solenoid valve coupling |
| WO2005095789A1 (en) * | 2004-03-31 | 2005-10-13 | Robert Bosch Gmbh | Device for injecting fuel into the combustion chamber of an internal combustion engine and having a needle lift sensor |
| NL2003173C2 (en) * | 2009-07-09 | 2011-01-11 | Geva Sol B V | Ceramic seal assembly. |
| DE102020108665A1 (en) | 2020-03-30 | 2021-09-30 | Liebherr-Components Deggendorf Gmbh | Nozzle needle for a fuel injector and injector housing for a nozzle needle |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU8533291A (en) * | 1990-09-18 | 1992-04-15 | Lucas Industries Public Limited Company | Fuel injection nozzles |
| GB9225005D0 (en) * | 1992-11-30 | 1993-01-20 | Perkins Ltd | Improvements in or relating to fluid-flow control valves |
| DE10319329A1 (en) | 2003-04-29 | 2004-11-25 | Siemens Ag | Injector with seat contact switch |
| DE10333358B3 (en) * | 2003-07-23 | 2005-05-25 | Siemens Ag | Circuit arrangement and method for operating an injector arrangement and injector |
| DE102004001358B4 (en) | 2004-01-08 | 2007-10-04 | Siemens Ag | Control method and control device for an actuator |
| DE102004052005A1 (en) * | 2004-10-25 | 2006-05-11 | Raziol Zibulla & Sohn Gmbh | Device for applying fluid or paste medium, especially greasing means, on workpiece surface has device for position control of nozzle needle, whereby device checks whether nozzle needle occupies determined position |
| DE102005001283B4 (en) * | 2005-01-11 | 2008-04-17 | Siemens Ag | actuator device |
| DE102005001282B4 (en) * | 2005-01-11 | 2007-02-15 | Siemens Ag | actuator device |
| DE102005002796B4 (en) * | 2005-01-20 | 2009-01-08 | Continental Automotive Gmbh | valve device |
| DE102005007327B4 (en) * | 2005-02-17 | 2010-06-17 | Continental Automotive Gmbh | Circuit arrangement and method for operating an injector arrangement |
| DE102005049259B3 (en) * | 2005-10-14 | 2007-01-04 | Siemens Ag | Valve device, especially injection valve for internal combustion engine, has electrically conducting valve body, electrically insulated integrated conducting valve needle guide in valve body that forms contact switch(es) with valve body |
| DE102007048461A1 (en) * | 2007-10-09 | 2009-04-16 | Thomas Magnete Gmbh | Electromagnetic valve for use in explosive atmosphere, has magnetic drive provided for driving valve piston that moves in longitudinal direction of valve, where one-chamber system is made of three-wall system |
| GB201513643D0 (en) * | 2015-08-03 | 2015-09-16 | Delphi Int Operations Lux Srl | Injection nozzle |
| DE202018100337U1 (en) * | 2018-01-22 | 2019-04-24 | Liebherr-Components Deggendorf Gmbh | Injector and device for detecting the state of such an injector |
| DE102018125803A1 (en) * | 2018-10-17 | 2020-04-23 | Liebherr-Components Deggendorf Gmbh | Injector |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4111178A (en) * | 1976-11-08 | 1978-09-05 | General Motors Corporation | Ignition system for use with fuel injected-spark ignited internal combustion engines |
| EP0020888A1 (en) * | 1979-06-22 | 1981-01-07 | Robert Bosch Gmbh | Fuel injection nozzle for internal-combustion engines |
| GB1582317A (en) * | 1977-01-25 | 1981-01-07 | Murata Manufacturing Co | Piezoelectric crystalline films |
| GB2075068A (en) * | 1980-05-02 | 1981-11-11 | Sumitomo Electric Industries | Articles coated with hard materials |
| EP0045530A2 (en) * | 1980-08-06 | 1982-02-10 | Robert Bosch Gmbh | Fuel injector valve for combustion engines |
| GB2097859A (en) * | 1981-05-06 | 1982-11-10 | Bosch Gmbh Robert | A fuel injection nozzle for combustion engines |
| GB2125894A (en) * | 1982-08-26 | 1984-03-14 | Lucas Ind Plc | I.C. engine fuel injection nozzle |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1258903A (en) * | 1912-11-30 | 1918-03-12 | Walter E Howard | Valve. |
| DE3023230A1 (en) * | 1980-06-21 | 1982-01-07 | AZ Armaturen GmbH & Co KG, 7745 Schonach | Ball valve esp. for liquids contg. precipitating cpds. - has continuous casing lining of fluorinated hydrocarbon preventing dead spaces |
-
1983
- 1983-12-14 JP JP23431483A patent/JPS60129483A/en active Pending
-
1984
- 1984-12-07 GB GB08430978A patent/GB2153907A/en not_active Withdrawn
- 1984-12-14 DE DE19843445721 patent/DE3445721A1/en not_active Ceased
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4111178A (en) * | 1976-11-08 | 1978-09-05 | General Motors Corporation | Ignition system for use with fuel injected-spark ignited internal combustion engines |
| GB1582317A (en) * | 1977-01-25 | 1981-01-07 | Murata Manufacturing Co | Piezoelectric crystalline films |
| EP0020888A1 (en) * | 1979-06-22 | 1981-01-07 | Robert Bosch Gmbh | Fuel injection nozzle for internal-combustion engines |
| GB2075068A (en) * | 1980-05-02 | 1981-11-11 | Sumitomo Electric Industries | Articles coated with hard materials |
| EP0045530A2 (en) * | 1980-08-06 | 1982-02-10 | Robert Bosch Gmbh | Fuel injector valve for combustion engines |
| GB2097859A (en) * | 1981-05-06 | 1982-11-10 | Bosch Gmbh Robert | A fuel injection nozzle for combustion engines |
| GB2125894A (en) * | 1982-08-26 | 1984-03-14 | Lucas Ind Plc | I.C. engine fuel injection nozzle |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2171500A (en) * | 1985-02-27 | 1986-08-28 | Diesel Kiki Co | Solenoid valve |
| GB2178512A (en) * | 1985-07-18 | 1987-02-11 | Diesel Kiki Co | Solenoid valve |
| GB2320522A (en) * | 1996-12-18 | 1998-06-24 | Daimler Benz Ag | Device for determining the opening and closing times of a valve, eg i.c. engin inlet valve or fuel-injection valve |
| FR2773602A1 (en) * | 1998-01-13 | 1999-07-16 | Bitron Ind Espana | Adjustable electrovalve suitable for use with liquid high pressure hydrocarbons and with proportional relationship between applied electric current and regulated pressure |
| EP1018483A1 (en) * | 1998-10-19 | 2000-07-12 | Dresser Wayne Ab | Gas-thight solenoid valve coupling |
| WO2005095789A1 (en) * | 2004-03-31 | 2005-10-13 | Robert Bosch Gmbh | Device for injecting fuel into the combustion chamber of an internal combustion engine and having a needle lift sensor |
| NL2003173C2 (en) * | 2009-07-09 | 2011-01-11 | Geva Sol B V | Ceramic seal assembly. |
| DE102020108665A1 (en) | 2020-03-30 | 2021-09-30 | Liebherr-Components Deggendorf Gmbh | Nozzle needle for a fuel injector and injector housing for a nozzle needle |
| WO2021197947A1 (en) * | 2020-03-30 | 2021-10-07 | Liebherr-Components Deggendorf Gmbh | Nozzle needle for a fuel injector, and injector housing for a nozzle needle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60129483A (en) | 1985-07-10 |
| DE3445721A1 (en) | 1985-07-04 |
| GB8430978D0 (en) | 1985-01-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |