GB1599316A - Electromagnetically operable fluid valve - Google Patents
Electromagnetically operable fluid valve Download PDFInfo
- Publication number
- GB1599316A GB1599316A GB21530/77A GB2153077A GB1599316A GB 1599316 A GB1599316 A GB 1599316A GB 21530/77 A GB21530/77 A GB 21530/77A GB 2153077 A GB2153077 A GB 2153077A GB 1599316 A GB1599316 A GB 1599316A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- magnetisable
- seating
- fuel
- grooves
- 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.)
- Expired
Links
- 239000012530 fluid Substances 0.000 title claims description 14
- 238000004804 winding Methods 0.000 claims description 42
- 239000000446 fuel Substances 0.000 claims description 35
- 239000000463 material Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 7
- 230000000717 retained effect Effects 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 239000000356 contaminant Substances 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 claims description 2
- 230000004907 flux Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims 1
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
-
- 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
-
- 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
- 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
- F02M51/0689—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means and permanent magnets
- F02M51/0692—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means and permanent magnets as valve or armature return means
-
- 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
- F02M63/0003—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure
- F02M63/0007—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure using electrically actuated valves
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetically Actuated Valves (AREA)
- Fuel-Injection Apparatus (AREA)
Description
(54) ELECTROMAGNETICALLY OPERABLE FLUID VALVE
(71) We, LUCAS INDUSTRIES LI
MITED, a British Company of Great King
Street, Birmingham B19 2XF, do hereby declare the invention for which we pray that a Patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:
The invention relates to a fluid valve, particularly though not exclusively for a fuel injection device. and principally to such a valve including an electromagnetic device of the type described in our co-pending British
Application No. 8606/74 (Serial No.
1,504,873)
The object of the invention is to provide such a valve in a simple and convenient form.
According to the present invention, there is provided a fluid valve comprising a body having an outlet therein; a seating on the body; a valve member engageable with the seating to control the flow of fuel through the outlet in use; and an electromagnetic device including a first magnetisable member movable relative to the body and having the valve member operably connected thereto. a second magnetisable member fixed relative to the body, one of the magnetisable members having a plurality of grooves therein disposed in side-by-side relationship, the other of the magnetisable members having a plurality of projections thereon, each projection extending into a respective one of the grooves and being of smaller width than the respective groove, and an electrical winding disposed in at least some of the grooves, the connection of the windings being such that any two grooves in which the flow of electric current in the windings therein is in the same direction are separated by a groove with either no winding therein or a winding in which the flow of electric current is in the opposite direction; each projection being non-centrally disposed in its respective groove when the windings are de-energised, energisation of the windings causing the first magnetisable member to move relative to the second magnetisable member thereby to disengage the valve member from the seating.
Preferably, biassing means is provided for biassing the valve member into engagement with the seating, each projection is noncentrally disposed in its respective groove when the valve member is engaged with the seating and energisation of the windings causes the valve member to be lifted off the seating against the action of the biassing means.
Desirably, the valve member is made of magnetisable material and the biassing means comprises a permanent magnet which attracts the valve member into engagement with the seating when the windings are de-energised.
Advantageously, the permanent magnet is disposed in the path of fluid flow through the valve so that any magnetic or magnetisable particles in the fluid are attracted thereby and retained in said valve.
Most advantageously, the permanent magnet is of annular form and surrounds the seating Conveniently, the seating is provided on a portion of the body which is made of magnetisable material and the permanent magnet is engaged with said body portion.
Preferably, said one and said other of the magnetisable members are generally of cylindrical and annular form, respectively, said other of the magnetisable members surrounding said one of the magnetisable members, and the grooves and projections being defined by helical threads on the facing surfaces of the magnetisable members.
In a particular embodiment, the windings consist of a single length of wire which is wound in one groove from one end to the other of said one of the magnetisable members and in adjacent groove from said other end to said one end of said one magnetisable member, the wire being wound around non-magnetic formers provided at the ends respectively of said one magnetisable member.
An embodiment of the present invention will now be described by way of example, with reference to the accompanying drawing, which is an axial sectional view of part of a fluid valve for a fuel injection device, according to the present invention.
The valve comprises generally a body 10 including a seating member 11 having an outlet orifice 12 therein, a valve member 13 engageable with the seating member 11 to control the flow of fuel through the orifice 12, and an electromagnetic device 14 for moving the valve member 13 into and out of engagement with the seating member 11.
The body 10 also includes a tubular member 15 whose central bore 16 is connected to a supply of fuel at low pressure (not shown). Conveniently the tubular member is formed from non-magnetic materials. The seating member 11 engages a shoulder 17 on the tubular member 15, and an end 18 of the tubular member 15 is rolled inwardly to retain the seating member 11 against the shoulder 17. The opposite end of the bore 16 is closed by an end closure (not shown) which is also retained by rolling the end of the tubular member inwardly. The end closure is provided with an inlet channel.
The seating member 11 is made of magnetisable material and includes a seat defining surface 19 which surrounds the outlet orifice 12 and which has annular seating ribs or projections 20 formed thereon. An annular permanent magnet 21 is engaged with the seating member 11 so as to surround the surface 19 and the outlet orifice 12. The valve member 13, which is made of magnetisable material, is attracted by the magnet 21 so as to engage the ribs or projections 20 on the surface 19 when the electromagnetic device 14 is not energised. When in this position a gap exists between the magnet and the valve member. A pin 22 is secured to the seating member 11 and passes through an aperture 23 in the valve member 13, thereby preventing the valve member 13 from rotating relative to the body 10.A bore 24 is provided in the valve member 13 by means of which the bore 16 of the tubular member 15 communicates with the outlet orifice 12 when the valve member 13 is lifted away from the surface 19.
The electromagnetic device 14 includes a first magnetisable member 25 which is of generally annular form and which is slidable relative to the body 10 within the bore 16 and is guided by the wall of the bore. Two helical projections 26 are provided on the radially inner surface of the member 25, and form a two-start thread. The valve member 13 has corresponding helical grooves 27 (only one visible) on its radially outer surface, and is operatively connected to the member 25 by being screwed into an end of the latter, the grooves 27 receiving the projections 26 respectively. The aforesaid pin 22 also acts to retain the magnetisable member 25 against angular movement.
The electromagnetic device 14 also includes a second magnetisable member 28 which is of generally cylindrical form and which is fixed relative to the body 10. Two helical grooves 29 are defined by a two-start thread on the radially outer surface of the member 28, and each of these grooves 29 houses a respective electrical winding 30.
The electrical windings 30 are connected such that the flow of electric current in each groove 29 is in one direction only, and such that the electric current flows in opposite directions in the two grooves 29.
It will be apparent that each of the grooves 29 can be regarded as a series of smaller grooves each extending for 360" about the axis of the member 28. These smaller grooves will be disposed in side-byside relationship along the length of the member 28, and any two of these grooves in which the electric current flows in the same direction will be separated by another of the grooves in which the electric current flows in the opposite direction.
The windings are preferably constituted by a single length of wire which is wound around the member 28 from one end to the other thereof in one of the grooves 29, and which is wound back to said one end of the member 28 in the other of the grooves 29.
Non-magnetic formers 31 are provided at either end of the member 28 and the wire is wound around these formers as indicated at 32 and 33 before being wound back to the respective opposite end of the member 28.
The member 25 is disposed around the member 28, and the projections 26 on the member 25 enter into the grooves 29 in member 28, respectively, each projection 28 being smaller in width than the respective groove 29. When the valve member 13 engages the seating member 11, each projection 26 is spaced by a small amount from a side wall of the respective groove 29 and is non-centrally dispoased with respect to that groove.
The valve further comprises two rubber seating rings 34 and 35 which are mounted respectively on the seating member 11 and the tubular member 15.
In use, the valve member 13 is normally biassed into engagement with the seating member 11 by the permanent magnet 21.
However, when the windings 30 of the electromagnetic device 14 are energised, a strong magnetic force is exerted on the magnetisable member 25. The member 25 then moves upwardly, as viewed in the drawing, so as to reduce the spacing between each projection 26 and the adjacent side wall of the respective groove 29 and to decrease the reluctance for the magnetic flux generated by the energised windings 30.
This lifts the valve member 13 off the seating member 11. overcoming the attractive force produced by permanent magnet 21, and thereby permits fuel to flow through the outlet orifice 12 by means of bores 16 and 24. Upon de-energisation of the electromagnetic device 14, the permanent magnet 21 attracts the valve member 13 back into engagement with the seating member 11, thereby cutting off the flow of fuel through outlet orifice 12. The flow of fuel through the orifice 12 is such that the fuel is atomized and the atomized fuel flows through an outwardly flared bore 36. The valve can therefore act as a fuel supply nozzle for supplying fuel to the inlet manifold of an internal combustion engine. The bore 36 in use is intended to receive a hollow truncated inlet mounted on the inlet manifold.
The permanent magnet 21 is disposed in the path of fuel flowing through the valve.
Hence, any magnetic or magnetisable particles in the fuel will be attracted by the magnet 21 and retained in the valve. The magnet 21 therefore serves a dual function, namely to bias the valve member 13 into engagement with the seating member 11 and to remove contaminating particles from the fuel.
The winding 30 in one of the grooves 29 can be omitted. In this case if the helical grooves 29 are regarded notionally as a series of smaller grooves each extending for 360"C around the axis of the magnetisable member 28, then along the length of the member 28 any of these smaller grooves in which the flow of electric current in the windings therein is in the same direction will be separated by a groove with no winding therein.
The valve as described can act very quickly to allow fuel flow through the outlet when the winding or windings are energised.
Moreover, the magnet 21 besides eliminating the need for a return spring to retain the valve member in the closed position when the pressure of fuel is zero also as a filter to remove magnetisable contaminant in the fuel flowing through the valve.
WHAT WE CLAIM IS:
1. A fluid valve comprising a body having an outlet therein, a seating on the body; a valve member engageable with the seating to control the flow of fuel through the outlet in use; and an electromagnetic device including a first magnetisable member movable relative to the body and having the valve member operably connected thereto, a second magnetisable member fixed relative to the body, one of the magnetisable members having a plurality of grooves therein disposed in side-by-side relationship, the other of the magnetisable members having a plurality of projections thereon, each projection extending into a respective one of the grooves and being of smaller width - than the respective groove, and an electrical winding disposed in at least some of the grooves, the connection of the windings being such that any two grooves in which the flow of electric current in the windings therein is in the same direction are separated by a groove with either no winding therein or a winding in which the flow of electric current is in the opposite direction, each projection being non-centrally disposed in its respective groove when the windings are de-energised, energisation of the windings causing the first magnetisable member to move relative to the second magnetisable member thereby to disengage the valve member from the seating.
2. A valve according to Claim 1 including biassing means for biassing the valve member into engagement with the seating, each projection is non-centrally disposed in its respective groove when the valve member is engaged with the seating and energisation of the windings causes the valve member to be lifted off the seating against the action of the biassing means.
3. A valve according to claim 2 in which the valve member is formed from magnetisable material and said biassing means comprises a permanent magnet positioned to attract the valve member into contact with the seating.
4. A valve according to claim 3 in which the closed position of the valve a gap exists between the valve member and the magnet.
5. A valve according to claim 3 in which the magnet is disposed in the path of fluid flow through the valve so that any magnetic or magnetisable particles in the fluid are attracted thereby and retained in said valve.
6. A valve according to claim 4 in which the magnet is of annular form and surrounds the seating.
7. A valve according to claim 6 in which the seating is defined on a portion of the body which is formed from magnetisable material, the permanent magnet being engaged with said body portion.
8. A valve according to claim 7 in which said seating is defined by an annular rib on said portion of the body said rib surrounding said outlet.
9. A valve according to claim 8 in which said one and said other of the magnetisable members are generally of cylindrical and
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (14)
1. A fluid valve comprising a body having an outlet therein, a seating on the body; a valve member engageable with the seating to control the flow of fuel through the outlet in use; and an electromagnetic device including a first magnetisable member movable relative to the body and having the valve member operably connected thereto, a second magnetisable member fixed relative to the body, one of the magnetisable members having a plurality of grooves therein disposed in side-by-side relationship, the other of the magnetisable members having a plurality of projections thereon, each projection extending into a respective one of the grooves and being of smaller width - than the respective groove, and an electrical winding disposed in at least some of the grooves, the connection of the windings being such that any two grooves in which the flow of electric current in the windings therein is in the same direction are separated by a groove with either no winding therein or a winding in which the flow of electric current is in the opposite direction, each projection being non-centrally disposed in its respective groove when the windings are de-energised, energisation of the windings causing the first magnetisable member to move relative to the second magnetisable member thereby to disengage the valve member from the seating.
2. A valve according to Claim 1 including biassing means for biassing the valve member into engagement with the seating, each projection is non-centrally disposed in its respective groove when the valve member is engaged with the seating and energisation of the windings causes the valve member to be lifted off the seating against the action of the biassing means.
3. A valve according to claim 2 in which the valve member is formed from magnetisable material and said biassing means comprises a permanent magnet positioned to attract the valve member into contact with the seating.
4. A valve according to claim 3 in which the closed position of the valve a gap exists between the valve member and the magnet.
5. A valve according to claim 3 in which the magnet is disposed in the path of fluid flow through the valve so that any magnetic or magnetisable particles in the fluid are attracted thereby and retained in said valve.
6. A valve according to claim 4 in which the magnet is of annular form and surrounds the seating.
7. A valve according to claim 6 in which the seating is defined on a portion of the body which is formed from magnetisable material, the permanent magnet being engaged with said body portion.
8. A valve according to claim 7 in which said seating is defined by an annular rib on said portion of the body said rib surrounding said outlet.
9. A valve according to claim 8 in which said one and said other of the magnetisable members are generally of cylindrical and
annular form, respectively; said other of the magnetisable members surrounding said one of the magnetisable members; and the grooves and projections being defined by helical threads on the facing surfaces of the magnetisable members.
10. A valve according to claim 9 in which said other magnetisable member slides within a bore in the body.
11. A valve according to claim 10 in which the valve member is secured to said other magnetisable member by means of the threads formed thereon.
12. A valve according to claim 11 including a pin fast on the body and positioned in a slot in the valve member to prevent angular movement of the valve member and said other magnetisable member.
13. A valve according to claim 8 in which said portion of the body defines an outwardly placed opening from said outlet, said outlet being placed so that when liquid fuel is supplied to the interior of the body the fuel will be atomised during its passage through the outlet.
14. A fluid valve comprising the combination and arrangement of parts substantially as hereinbefore described with reference to and as shown in the accompanying drawings.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB21530/77A GB1599316A (en) | 1977-05-21 | 1977-05-21 | Electromagnetically operable fluid valve |
| ES469820A ES469820A1 (en) | 1977-05-21 | 1978-05-12 | Electromagnetically operable fluid valve |
| DE19782821293 DE2821293A1 (en) | 1977-05-21 | 1978-05-16 | LIQUID VALVE |
| IT23482/78A IT1096094B (en) | 1977-05-21 | 1978-05-17 | FLUID VALVE FOR A FUEL INJECTION DEVICE |
| JP5986678A JPS53145124A (en) | 1977-05-21 | 1978-05-19 | Fluid valve having electromagnetic windings |
| FR7815088A FR2391363A1 (en) | 1977-05-21 | 1978-05-22 | FLUID DISTRIBUTION CONTROL DEVICE, ESPECIALLY FOR FUEL INJECTION DEVICE |
| MX173544A MX146737A (en) | 1977-05-21 | 1978-05-29 | IMPROVED FLUID VALVE, PARTICULARLY FOR A FUEL INJECTION DEVICE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB21530/77A GB1599316A (en) | 1977-05-21 | 1977-05-21 | Electromagnetically operable fluid valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1599316A true GB1599316A (en) | 1981-09-30 |
Family
ID=10164465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21530/77A Expired GB1599316A (en) | 1977-05-21 | 1977-05-21 | Electromagnetically operable fluid valve |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS53145124A (en) |
| DE (1) | DE2821293A1 (en) |
| ES (1) | ES469820A1 (en) |
| FR (1) | FR2391363A1 (en) |
| GB (1) | GB1599316A (en) |
| IT (1) | IT1096094B (en) |
| MX (1) | MX146737A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2130017A (en) * | 1982-10-09 | 1984-05-23 | Bosch Gmbh Robert | A solenoid-actuated valve incorporating a permanent magnet |
| GB2245764A (en) * | 1990-06-29 | 1992-01-08 | Weber Srl | Solenoid operated fuel injection valves |
| WO2002014680A1 (en) * | 2000-08-11 | 2002-02-21 | Siemens Aktiengesellschaft | Filter device for a high pressure area of a storage injection system for an internal combustion engine |
| CN108894896A (en) * | 2018-06-04 | 2018-11-27 | 江苏理工学院 | A kind of swirl injection type high pressure fuel gas jet valve |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5671951U (en) * | 1979-11-07 | 1981-06-13 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH175767A (en) * | 1932-11-24 | 1935-03-15 | Edward Kennedy Harry | Electromagnetically controlled valve. |
| US3017873A (en) * | 1956-07-17 | 1962-01-23 | Gen Motors Corp | Fuel injection system |
| AU8211375A (en) * | 1974-06-29 | 1976-12-16 | Lucas Electrical Co Ltd | Fuel injection nozzle |
| GB1555478A (en) * | 1975-09-19 | 1979-11-14 | Lucas Industries Ltd | Fuel injection system for internal combustion engines |
-
1977
- 1977-05-21 GB GB21530/77A patent/GB1599316A/en not_active Expired
-
1978
- 1978-05-12 ES ES469820A patent/ES469820A1/en not_active Expired
- 1978-05-16 DE DE19782821293 patent/DE2821293A1/en not_active Withdrawn
- 1978-05-17 IT IT23482/78A patent/IT1096094B/en active
- 1978-05-19 JP JP5986678A patent/JPS53145124A/en active Pending
- 1978-05-22 FR FR7815088A patent/FR2391363A1/en active Granted
- 1978-05-29 MX MX173544A patent/MX146737A/en unknown
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2130017A (en) * | 1982-10-09 | 1984-05-23 | Bosch Gmbh Robert | A solenoid-actuated valve incorporating a permanent magnet |
| GB2245764A (en) * | 1990-06-29 | 1992-01-08 | Weber Srl | Solenoid operated fuel injection valves |
| WO2002014680A1 (en) * | 2000-08-11 | 2002-02-21 | Siemens Aktiengesellschaft | Filter device for a high pressure area of a storage injection system for an internal combustion engine |
| CN108894896A (en) * | 2018-06-04 | 2018-11-27 | 江苏理工学院 | A kind of swirl injection type high pressure fuel gas jet valve |
Also Published As
| Publication number | Publication date |
|---|---|
| IT1096094B (en) | 1985-08-17 |
| ES469820A1 (en) | 1979-01-16 |
| FR2391363A1 (en) | 1978-12-15 |
| IT7823482A0 (en) | 1978-05-17 |
| DE2821293A1 (en) | 1978-11-30 |
| JPS53145124A (en) | 1978-12-18 |
| MX146737A (en) | 1982-08-04 |
| FR2391363B1 (en) | 1983-02-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |