US3610529A - Electromagnetic fuel injection spray valve - Google Patents
Electromagnetic fuel injection spray valve Download PDFInfo
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- US3610529A US3610529A US844005A US3610529DA US3610529A US 3610529 A US3610529 A US 3610529A US 844005 A US844005 A US 844005A US 3610529D A US3610529D A US 3610529DA US 3610529 A US3610529 A US 3610529A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
- F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
- F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
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- 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
- F02M2547/00—Special features for fuel-injection valves actuated by fluid pressure
- F02M2547/003—Valve inserts containing control chamber and valve piston
Definitions
- Nlo mays PATENTEDDBT w. 3.610.529
- PATENTEDBBT 5m 13 610 529 gm 3 or s Fig.3
- the invention relates to an electromagnetic fuel-injection spray valve for internal combustion engines, particularly diesel engines, including an electromagnetic metering valve at the upper end of the spray valve body, a spray nozzle, a needle valve arranged immediately upstream of the spray nozzle, and a nozzle valve needle incorporated by the needle valve and opened by the fall in the pressure acting on the needle, caused when the metering valve opens to establish a path to a fuel return line.
- An injection valve of this kind is prior art, the quantity of the fuel injected being determined by the length of the current pulse fed to the electromagnetic metering valve.
- a spring closes the nozzle valve needle after each injection.
- This spring is contained in a space the fuel pressure in which determines the opening and closing of the nozzle valve needle by the spring, the space being connected to a relief line.
- the total volume is relatively large in which the fuel pressure must be reduced for each injection. This fact slows down the rise and fall of the fuel pressure in this space, and delays control of the engine, particularly at high r.p.m.
- FIGS. I 2, and 3 are longitudinal sections of three different embodiments of the invention.
- FIG. 4 is a modification of the embodiment shown in FIG. 3.
- the electromagnetic part of the valve comprises in a known manner a core 1 having a winding 2 and a movable armature 3, which is rigidly connected to the needle 4 of a metering valve.
- the needle cooperates with the valve seat 5.
- a compression spring 24 presses the armature downwards, seating the metering needle 4 on its seat 5.
- the upper end of the spring 24 presses against a stop 25 slidably held in the armature 3 and pressed against the core 1.
- a rod 7 is sealingly held in the valve body 6 free to slide axially.
- a nozzle valve needle 8 Joined to the lower end of the rod 7 is a nozzle valve needle 8, which cooperates with the valve seat 9 and forms the actual injection spray valve controlling the flow of fuel to the spray nozzle 10.
- a compression spring 12 located in a chamber 11, presses on the rod 7 and hence on the nozzle valve needle 8 to keep the injection spray valve closed.
- the fuel delivered by a high-pressure supply pump, flows through the line 13 and the bores 14 and 15 to be delivered simultaneously to the chamber 11 and the space 16 just upstream of the seat 9.
- the bore 15 is connected to an annular space 17, which a throttling bore 18 connects to bores 19 that form a relief line connecting a space 20 above the nozzle valve needle 8 with the valve seat 5 of the metering valve 4 and 5.
- a throttling bore 18 connects to bores 19 that form a relief line connecting a space 20 above the nozzle valve needle 8 with the valve seat 5 of the metering valve 4 and 5.
- the space 20 communicates with a space 21 that a bore 22 connects with a return line 23, in which the fuel is at approximately atmospheric pressure.
- the fuel flows through bores (not shown) in the core I to the return line 23.
- the injection spray valve operates in the following manner.
- the fuel delivered under pressure by the line 13 flows through the bores 14 and 15 to fill the spaces 11, I6, and I7, and through the throttling bore 18 into the relief line I9 and the space 20.
- a piston 28 is arranged above a rod 27, which corresponds to the rod 7 in FIG. I.
- the rod 27 is arranged with lateral play in the valve body 6.
- the space 29 above the injection spray needle 8 is connected to a space 30, which a passage 31 and a bore 32 connect to a space 34, and which a bore 33 and passages in the core 1 connect to the return line 23, so that an approximately atmospheric pressure is present in all of these spaces and connecting bores and passages.
- Fuel delivered under high pressure by the line 3 flows through the bores 35 into the space 36 and through the throttling bore 37 into the space 38 above the piston 28.
- the metering needle 4 is raised, causing the high pressure in the space 38 to fall.
- the injection spray needle 8 is raised from its seat 9, and fuel sprays from the spray nozzle 10 into the cylinder, not shown.
- the space 38 which must be relieved of its pressure for each injection, has in this embodiment a very small volume.
- the spring 12 reseats the needle 8, and the pressure in the space 38 rises.
- the spring 12 is the only means for closing the needle 8, whereas in the embodiment shown in FIG. 2 the spring 12 can be eliminates or can be weak, provided that the piston 28 has a somewhat larger diameter than does the shaft of the needle 8, so that the downward closing force acting on the piston 28 is greater than the upward force acting on the needle 8.
- closing spring 12 is also not essential.
- a piston 40 having a larger cross section than does injection spray needle 8, is arranged immediately above the needle 8. The fuel delivered at high pressure by the line 13 flows through the bores 41 to the space 42 and through the throttling bore 43 and the bore 44 into the space 45.
- the space 46 between the piston 40 and the injection spray needle 8 is connected at all times to a space 48 by the bores 47 and to the return line 23 by a bore 49 and the passages (not shown) in the core I.
- the piston 40 exerts a closing force on the needle 8.
- the metering valve 4 and 5 closes, the pressure in the space 45 immediately rises, and the piston 40 presses the needle 8 back onto its seat 9.
- a weak spring 50 which presses against the needle 8 by means of an auxiliary piston SI.
- the spaces 20, 38, and 45, the relative pressure in which determines the opening and closing of the injection spray valve are connected by the calibrated throttling bores 18, 37, and 43 to the fuel supply line 13 and are connected directly, or by the bores 19 and 44, with the electromagnetically controlled metering valve 4 and 5.
- the dimensions'of the calibrated cross section and of the cross section exposed by the valve fundamentally influence the manner in which the spray valve 8 and 9 opens and closes. If the calibrated inlet is made relatively large as compared to the cross section controlled by the valve, for example, the needle 8 opens relatively slowly, since the fuel that must be pushed away by the needle 8 (FIG. 1), or by the piston 28 or 40 (FIGS. 2 and 3), cannot quickly escape. But the valve closes quickly because of the large inlet cross section.
- the fuel injection spray valve can be adapted to the engine.
- An electromagnetic fuel-injection spray valve for internal combustion engines including an electromagnetic metering valve (4,5) at the upper end of the spray valve body (16), a spray nozzle a needle valve (8,9) arranged immediately upstream of said spray nozzle, a nozzle valve needle (8) incorporated by said needle valve and opened by the fall in the pressure acting on said needle, caused when said metering valve opens to establish a path to a fuel return line (23), and wherein the improvement comprises a first space (20,38,45) in which the fuel pressure determines the opening and closing of said nozzle valve needle, and means operatively associated with said nozzle valve needle for aiding the closing of said nozzle valve needle in response to the closing of the metering valve.
- said means operatively associated with said nozzle valve needle comprise: a second space separate from said first space, and spring means contained within said second space for aiding the closing of said nozzle valve needle.
- said first space (3!) is in direct communication with said metering valve at al times, and further including a rod (27) free to move axially for transmitting the force of said spring means to said nozzle valve needle, and a piston (28) connected to said rod to move therewith, said piston having a larger diameter than does the shaft of said nozzle valve needle to help to close the latter, and one end of said piston defining one side of said first space.
Abstract
The nozzle valve needle is closed by a compression spring housed in a space that is separate from the space in which the pressure determines the opening and closing of the needle. In another embodiment, a piston is acted upon by the pressure in this latter space to close the needle.
Description
United States Patent [72] Inventor Robert Huber [50] Field of Search 239/86, 87, Zumikon, Switzerland 88, 89, 90, 91, 92, 95, 96, 533, 585 [21] Appl. No. 844,005 [22] Filed July 23, 1969 References Clted [45] Patented Oct. 5, 1971 UNlTED STATES PATENTS [73] Assignee Societe Des Procedes DInjection Sopromi 3,464,627 9/l969 Huber n 239/96 P k g rgg 3,481,542 12/1969 Huber 239 71 I II y Swigtzerland Primary ExaminerM. Henson Wood, Jr. [31] 911/68 Assistant Examiner-Edwin D. Grant Attorney-Spencer & Kaye [54] ELECTROMAGNETIC FUEL INJECTION SPRAY VALVE ABSTRACT: The nozzle valve needle is closed by a compres- Clams 4 D'awmg sion spring housed in a space that is separate from the space in [52] U.S. Cl 239/96, which the pressure determines the opening and closing of the 239/533, 239/585 needle. in another embodiment, a piston is acted upon by the [51] Int. Cl .,F02m 47/00 pressure in this latter space to close the needle.
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Mlo'rmys ELECTROMAGNETIC FUEL INJECTION SPRAY VALVE BACKGROUND OF THE INVENTION The invention relates to an electromagnetic fuel-injection spray valve for internal combustion engines, particularly diesel engines, including an electromagnetic metering valve at the upper end of the spray valve body, a spray nozzle, a needle valve arranged immediately upstream of the spray nozzle, and a nozzle valve needle incorporated by the needle valve and opened by the fall in the pressure acting on the needle, caused when the metering valve opens to establish a path to a fuel return line.
An injection valve of this kind is prior art, the quantity of the fuel injected being determined by the length of the current pulse fed to the electromagnetic metering valve.
A spring closes the nozzle valve needle after each injection. This spring is contained in a space the fuel pressure in which determines the opening and closing of the nozzle valve needle by the spring, the space being connected to a relief line. As a consequence of the additional volume required by this space to house the spring, the total volume is relatively large in which the fuel pressure must be reduced for each injection. This fact slows down the rise and fall of the fuel pressure in this space, and delays control of the engine, particularly at high r.p.m.
SUMMARY OF THE INVENTION BRIEF DESCRIPTION OF THE DRAWINGS Several embodiments of the invention will be described,
with reference to the figures of the accompanying drawings, wherein:
FIGS. I 2, and 3 are longitudinal sections of three different embodiments of the invention; and
FIG. 4 is a modification of the embodiment shown in FIG. 3.
DESCRIPTION OF THE PREFERRED EMBODIMENTS With reference to FIG. 1, the electromagnetic part of the valve comprises in a known manner a core 1 having a winding 2 and a movable armature 3, which is rigidly connected to the needle 4 of a metering valve. The needle cooperates with the valve seat 5. A compression spring 24 presses the armature downwards, seating the metering needle 4 on its seat 5. The upper end of the spring 24 presses against a stop 25 slidably held in the armature 3 and pressed against the core 1. A rod 7 is sealingly held in the valve body 6 free to slide axially. Joined to the lower end of the rod 7 is a nozzle valve needle 8, which cooperates with the valve seat 9 and forms the actual injection spray valve controlling the flow of fuel to the spray nozzle 10. A compression spring 12, located in a chamber 11, presses on the rod 7 and hence on the nozzle valve needle 8 to keep the injection spray valve closed.
The fuel, delivered by a high-pressure supply pump, flows through the line 13 and the bores 14 and 15 to be delivered simultaneously to the chamber 11 and the space 16 just upstream of the seat 9.
The bore 15 is connected to an annular space 17, which a throttling bore 18 connects to bores 19 that form a relief line connecting a space 20 above the nozzle valve needle 8 with the valve seat 5 of the metering valve 4 and 5. When the latter is open the space 20 communicates with a space 21 that a bore 22 connects with a return line 23, in which the fuel is at approximately atmospheric pressure. The fuel flows through bores (not shown) in the core I to the return line 23. The injection spray valve operates in the following manner. The fuel delivered under pressure by the line 13 flows through the bores 14 and 15 to fill the spaces 11, I6, and I7, and through the throttling bore 18 into the relief line I9 and the space 20. When a current pulse energizes the winding 2, the armature 3 and its metering needle 4 are raised, the pressure in the relief line 19 and the space 20 consequently falling. Since the crosssectional area of the nozzle valve needle 8 is greater than that of the rod 7, the needle 8 is raised from its seat 9 and fuel sprayed from the spray nozzle 10 into the cylinder, not shown. As soon as-the flow of current in the winding 2 stops, the me tering needle 4 closes. The spring 12 presses the nozzle valve needle 8 back onto its seat 9, and at the same time the pressure in the relief line 19 and the space 20 rises.
In the embodiment shown in FIG. 2, a piston 28 is arranged above a rod 27, which corresponds to the rod 7 in FIG. I. The rod 27 is arranged with lateral play in the valve body 6. The space 29 above the injection spray needle 8 is connected to a space 30, which a passage 31 and a bore 32 connect to a space 34, and which a bore 33 and passages in the core 1 connect to the return line 23, so that an approximately atmospheric pressure is present in all of these spaces and connecting bores and passages.
Fuel delivered under high pressure by the line 3 flows through the bores 35 into the space 36 and through the throttling bore 37 into the space 38 above the piston 28. When the winding 2 is energized, the metering needle 4 is raised, causing the high pressure in the space 38 to fall. As a consequence of the high pressure in the space 36, the injection spray needle 8 is raised from its seat 9, and fuel sprays from the spray nozzle 10 into the cylinder, not shown. The space 38, which must be relieved of its pressure for each injection, has in this embodiment a very small volume. As soon as the metering needle 4 is again seated, the spring 12 reseats the needle 8, and the pressure in the space 38 rises.
In the embodiment shown in FIG. I, the spring 12 is the only means for closing the needle 8, whereas in the embodiment shown in FIG. 2 the spring 12 can be eliminates or can be weak, provided that the piston 28 has a somewhat larger diameter than does the shaft of the needle 8, so that the downward closing force acting on the piston 28 is greater than the upward force acting on the needle 8.
In the embodiment shown in FIG. 3 is closing spring 12 is also not essential. A piston 40, having a larger cross section than does injection spray needle 8, is arranged immediately above the needle 8. The fuel delivered at high pressure by the line 13 flows through the bores 41 to the space 42 and through the throttling bore 43 and the bore 44 into the space 45.
In contrast to the first embodiment, the space 46 between the piston 40 and the injection spray needle 8 is connected at all times to a space 48 by the bores 47 and to the return line 23 by a bore 49 and the passages (not shown) in the core I. As a consequence of the greater cross sectional surface area of the piston 40, the latter exerts a closing force on the needle 8. As soon, however, as the energized winding 2 opens the metering valve 4 and 5, the pressure in the space 45 falls; and the injection spray needle 8, because of the unchanged pressure in the space 42, is raised, and fuel is sprayed from the nozzle 10. When the metering valve 4 and 5 closes, the pressure in the space 45 immediately rises, and the piston 40 presses the needle 8 back onto its seat 9.
In order to keep the needle 8 seated when the fuel pressure is absent (engine shut off) there can be incorporated in the piston 40, as shown in FIG. 4, a weak spring 50, which presses against the needle 8 by means of an auxiliary piston SI.
In the three embodiments the spaces 20, 38, and 45, the relative pressure in which determines the opening and closing of the injection spray valve, are connected by the calibrated throttling bores 18, 37, and 43 to the fuel supply line 13 and are connected directly, or by the bores 19 and 44, with the electromagnetically controlled metering valve 4 and 5. The dimensions'of the calibrated cross section and of the cross section exposed by the valve fundamentally influence the manner in which the spray valve 8 and 9 opens and closes. If the calibrated inlet is made relatively large as compared to the cross section controlled by the valve, for example, the needle 8 opens relatively slowly, since the fuel that must be pushed away by the needle 8 (FIG. 1), or by the piston 28 or 40 (FIGS. 2 and 3), cannot quickly escape. But the valve closes quickly because of the large inlet cross section.
On the other hand, if the inlet cross section is small and the valve cross section large, the valve opens quickly but closes much more slowly.
By suitable choice of the cross sections through which the fuel flows, the fuel injection spray valve can be adapted to the engine.
Although the preferred embodiments of the invention have been described, the scope of, and the breadth of protection afforded to, the invention are limited solely by the appended claims.
I claim:
1. An electromagnetic fuel-injection spray valve for internal combustion engines, particularly diesel engines, including an electromagnetic metering valve (4,5) at the upper end of the spray valve body (16), a spray nozzle a needle valve (8,9) arranged immediately upstream of said spray nozzle, a nozzle valve needle (8) incorporated by said needle valve and opened by the fall in the pressure acting on said needle, caused when said metering valve opens to establish a path to a fuel return line (23), and wherein the improvement comprises a first space (20,38,45) in which the fuel pressure determines the opening and closing of said nozzle valve needle, and means operatively associated with said nozzle valve needle for aiding the closing of said nozzle valve needle in response to the closing of the metering valve.
2. The injection spray valve as defined in claim 1, wherein said first space is provided with an inlet passage for the inflow of fuel thereto and is connected to said metering valve to form part of the path to the fuel return line, and the cross section of the fuel flowing into said first space via said inlet passage is smaller than that of the fuel flowing thereout vial said return line path, for obtaining a quick opening and a slow closing of said nozzle valve needle.
3. The injection spray valve as defined in claim 1, wherein said first space is provided with an inlet passage for the inflow of fuel thereto and is connected to said metering valve to form part of the path to the fuel return line, and the cross section of the fuel flowing into said first space via said inlet passage is greater than that of the fuel flowing thereout via said return line path, for obtaining a slow opening and a quick closing of said nozzle valve needle.
4. The injection spray valve as defined in claim 1, wherein said means operatively associated with said nozzle valve needle comprise: a second space separate from said first space, and spring means contained within said second space for aiding the closing of said nozzle valve needle.
5. The injection spray valve as defined in claim 4, wherein said nozzle valve needle is closed by said spring means, said second space (11) is under fuel pressure at all times, and said first space is located at the rear end of said nozzle valve nee dle, and further including a rod (7) sealingly arranged in the spray valve body (6) and free to slide axially for transmitting the force of said spring means to said nozzle valve needle.
6. The injection spray valve as defined in claim 4, wherein said nozzle valve needle is closed by said spring means, said second space (30) is relieved of fuel pressure at all times, and said first space (38) is in direct communication with said metering valve at all times, and further including a rod (27) free to move axially for transmitting the force of said spring means to said nozzle valve needle, and a piston (28) connected to said rod to move therewith, one end of said piston defining one side of said first space.
7. The injection spray valve as defined in claim 4, wherein said nozzle valve needle is in part closed by said spring means, said second space (30) is relieved of fuel pressure at all times,
and said first space (3!!) is in direct communication with said metering valve at al times, and further including a rod (27) free to move axially for transmitting the force of said spring means to said nozzle valve needle, and a piston (28) connected to said rod to move therewith, said piston having a larger diameter than does the shaft of said nozzle valve needle to help to close the latter, and one end of said piston defining one side of said first space.
8. An electromagnetic fuel-injection spray valve as defined in claim 1 wherein said means operatively associated with said nozzle valve needle comprised closing means operated by the pressure in said first space for closing said nozzle valve needle.
9. The injection spray valve as defined in claim 8, wherein said nozzle valve needle is closed by said closing means and said closing means is a piston (28) of which one end defines one side of said first space, and said first space is in direct communication with said metering valve at all times, and further including a rod (27) free to move axially for transmitting the pressure within said first space acting on said piston to said nozzle valve needle to close the latter.
10. The injection spray valve as defined in claim 8, wherein said nozzle valve needle is closed by said closing means and the latter is an operating piston (40) of which one end defines one side of said first space (45 said operating piston having a cross section greater than does said nozzle valve needle and acting directly on the latter, whereby the fuel pressure in said first space determines the closing of said nozzle valve needle.
11. The injection spray valve as defined in claim 10, including an auxiliary piston (51) arranged within said operating piston for acting on said nozzle valve needle, and a compression spring (50) pressing on said auxiliary piston to keep said nozzle valve needle closed when the fuel pressure is absent.
Claims (11)
1. An electromagnetic fuel-injection spray valve for internal combustion engines, particularly diesel engines, including an electromagnetic metering valve (4,5) at the upper end of the spray valve body (16), a spray nozzle (10), a needle valve (8,9) arranged immediately upstream of said spray nozzle, a nozzle valve needle (8) incorporated by said needle valve and opened by the fall in the pressure acting on said needle, caused when said metering valve opens to establish a path to a fuel return line (23), and wherein the improvement comprises a first space (20,38,45) in which the fuel pressure determines the opening and closing of said nozzle valve needle, and means operatively associated with said nozzle valve needle for aiding the closing of said nozzle valve needle in response to the closing of the metering valve.
2. The injection spray valve as defined in claim 1, wherein said first space is provided with an inlet passage for the inflow of fuel thereto and is connected to said metering valve to form part of the path to the fuel return line, and the cross section of the fuel flowing into said first space via said inlet passage is smaller than that of the fuel flowing thereout vial said return line path, for obtaining a quick opening and a slow closing of said nozzle valve needle.
3. The injection spray valve as defined in claim 1, wherein said first space is provided with an inlet passage for the inflow of fuel thereto and is connected to said metering valve to form part of the path to the fuel return line, and the cross section of the fuel flowing into said first space via said inlet passage is greater than that of the fuel flowing thereout via said return line path, for obtaining a slow opening and a quick closing of said nozzle valve needle.
4. The injection spray valve as defined in claim 1, wherein said means operatively associated with said nozzle valve needle comprise: a second space separate from said first space, and spring means contained within said second space for aiding the closing of said nozzle valve needle.
5. The injection spray valve as defined in claim 4, wherein said nozzle valve needle is closed by said spring means, said second space (11) is under fuel pressure at all times, and said first space is located at the rear end of said nozzle valve needle, and further including a rod (7) sealingly arranged in the spray valve body (6) and free to slide axially for transmitting the force of said spring means to said nozzle valve needle.
6. The injection spray valve as defined in claim 4, wherein said nozzle valve needle is closed by said spring means, said second space (30) is relieved of fuel pressure at all times, and said first space (38) is in direct communication with said metering valve at all times, and further including a rod (27) free to move axially for transmitting the force of said spring means to said nozzle valve needle, and a piston (28) connected to said rod to move therewith, one end of said piston defining one side of said first space.
7. The injection spray valve as defined in claim 4, wherein said nozzle valve needle is in part closed by said spring means, said second space (30) is relieved of fuel pressure at all times, and said first space (38) is in direct communication with said metering valve at all times, and further including a rod (27) free to move axially for transmitting the force of said spring means to said nozzle valve needle, and a piston (28) connected to said rod to move therewith, said piston having a larger diameter than does the shaft of said nozzle valve needle to help to close the latter, and one end of said piston defining one side of said first space.
8. An electromagnetic fuel-injection spray valve as defined in claim 1 wherein said means operatively associated with said nozzle valve needle comprised closing means operated by the pressure in said first space for closing said nozzle valve needle.
9. The injection spray valve as defined in claim 8, wherein said nozzle valve needle is closed by said closing means and said closing means is a piston (28) of which one end defines one side of said first space, and said first space is in direct communication with said metering valve at all times, and further including a rod (27) free to move axially for transmitting the pressure within said first space acting on said piston to said nozzle valve needle to close the latter.
10. The injection spray valve as defined in claim 8, wherein said nozzle valve needle is closed by said closing means and the latter is an operating piston (40) of which one end defines one side of said first space (45), said operating piston having a cross section greater than does said nozzle valve needle and acting directly on the latter, whereby the fuel pressure in said first space determines the closing of said nozzle valve needle.
11. The injection spray valve as defined in claim 10, including an auxiliary piston (51) arranged within said operating piston for acting on said nozzle valve needle, and a compression spring (50) pressing on said auxiliary piston to keep said nozzle valve needle closed when the fuel pressure is absent.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1291168A CH495504A (en) | 1968-08-28 | 1968-08-28 | Fuel injection valve with electromagnetic actuation |
Publications (1)
Publication Number | Publication Date |
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US3610529A true US3610529A (en) | 1971-10-05 |
Family
ID=4387525
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US844005A Expired - Lifetime US3610529A (en) | 1968-08-28 | 1969-07-23 | Electromagnetic fuel injection spray valve |
Country Status (8)
Country | Link |
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US (1) | US3610529A (en) |
CH (1) | CH495504A (en) |
DE (1) | DE1933489A1 (en) |
DK (1) | DK130486B (en) |
FR (1) | FR2016477A1 (en) |
GB (1) | GB1277220A (en) |
NL (1) | NL160913B (en) |
SE (1) | SE348526B (en) |
Cited By (57)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3680782A (en) * | 1969-10-24 | 1972-08-01 | Sopromi Soc Proc Modern Inject | Electromagnetic injectors |
US3773265A (en) * | 1970-08-19 | 1973-11-20 | Brico Eng | Electromagnetic fuel injectors |
US3777977A (en) * | 1971-07-08 | 1973-12-11 | Peugeot | Injection device |
US3796379A (en) * | 1971-10-30 | 1974-03-12 | Cav Ltd | Fuel injection nozzle units |
US3797753A (en) * | 1971-10-28 | 1974-03-19 | Cav Ltd | Liquid fuel injection systems |
US3893629A (en) * | 1973-08-29 | 1975-07-08 | Diesel Kiki Co | Fuel injection device for diesel engines |
USB541501I5 (en) * | 1972-06-12 | 1976-04-13 | ||
US4022166A (en) * | 1975-04-03 | 1977-05-10 | Teledyne Industries, Inc. | Piezoelectric fuel injector valve |
US4033507A (en) * | 1975-01-15 | 1977-07-05 | Robert Bosch Gmbh | Fuel injection valve |
DE2711391A1 (en) * | 1977-03-16 | 1978-09-21 | Bosch Gmbh Robert | FUEL INJECTOR |
US4164326A (en) * | 1978-04-06 | 1979-08-14 | General Motors Corporation | Electromagnetic fuel injector nozzle assembly |
US4171099A (en) * | 1975-12-24 | 1979-10-16 | Robert Bosch Gmbh | Fuel injection nozzle for internal combustion engines |
US4394856A (en) * | 1981-06-29 | 1983-07-26 | General Motors Corporation | Compression operated injector with fuel injection control |
US4561590A (en) * | 1981-12-28 | 1985-12-31 | Kabushiki Kaisha Komatsu Seisakusho | Fuel injection nozzle assembly |
US4566416A (en) * | 1981-07-31 | 1986-01-28 | Stanadyne, Inc. | Accumulator nozzle fuel injection system |
US4603671A (en) * | 1983-08-17 | 1986-08-05 | Nippon Soken, Inc. | Fuel injector for an internal combustion engine |
EP0228578A1 (en) * | 1985-12-02 | 1987-07-15 | Marco Alfredo Ganser | Fuel injection device for internal combustion engines |
US4798186A (en) * | 1986-09-25 | 1989-01-17 | Ganser-Hydromag | Fuel injector unit |
CH670682A5 (en) * | 1985-12-03 | 1989-06-30 | Marco Alfredo Ganser | Internal combustion engine accumulator injection device |
US4946103A (en) * | 1987-12-02 | 1990-08-07 | Ganser-Hydromag | Electronically controlled fuel injector |
US5183209A (en) * | 1990-10-31 | 1993-02-02 | Elasis Sistema Ricerca Fiat Nel Mezzogiorno Societa Consortile Per Azioni | Assembly of an electromagnet core of an electromagnetic internal combustion engine fuel injector |
US5263645A (en) * | 1991-11-01 | 1993-11-23 | Paul Marius A | Fuel injector system |
US5355856A (en) * | 1992-07-23 | 1994-10-18 | Paul Marius A | High pressure differential fuel injector |
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US5526791A (en) * | 1995-06-07 | 1996-06-18 | Diesel Technology Company | High-pressure electromagnetic fuel injector |
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US5984201A (en) * | 1996-10-10 | 1999-11-16 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engines |
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Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3118423C2 (en) * | 1981-05-05 | 1986-10-16 | Gebrüder Sulzer AG, Winterthur | Electric lifting magnet for controlling the movement of a nozzle needle of a fuel injector |
DE3409924A1 (en) * | 1983-03-31 | 1984-10-11 | AVL Gesellschaft für Verbrennungskraftmaschinen und Messtechnik mbH, Prof. Dr.Dr.h.c. Hans List, Graz | NOZZLE HOLDER FOR A FUEL INJECTION NOZZLE |
AT397129B (en) * | 1984-01-20 | 1994-02-25 | Bosch Robert Ag | FUEL INJECTION NOZZLE |
IT212432Z2 (en) * | 1987-08-25 | 1989-07-04 | Weber Srl | ELECTROMAGNETICALLY OPERATED FUEL INJECTION VALVE FOR DIESEL CYCLE ENGINES |
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FR2756595B1 (en) * | 1996-12-02 | 1999-02-12 | Froment Jean Louis | OPENING SLOWDOWN AND LEAKAGE REDUCTION DEVICE FOR CONSTANT PRESSURE INJECTION SYSTEMS USED ON DIESEL ENGINES |
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ATE211525T1 (en) * | 1997-07-16 | 2002-01-15 | Cummins Wartsila S A | FUEL INJECTION DEVICE FOR DIESEL ENGINES |
FR2766238B1 (en) * | 1997-07-16 | 1999-09-24 | Wartsila France | FUEL INJECTION DEVICE FOR DIESEL ENGINES |
FR2775736B1 (en) * | 1998-03-06 | 2000-05-12 | Cummins Wartsila | FUEL INJECTION DEVICE FOR DIESEL ENGINES |
DE19826791A1 (en) * | 1998-06-16 | 1999-12-23 | Bosch Gmbh Robert | Valve control unit for a fuel injector |
DE102008000171B4 (en) * | 2007-01-31 | 2017-04-06 | Denso Corporation | Injector and plate component for this |
CN104747337A (en) * | 2015-03-26 | 2015-07-01 | 常州博瑞油泵油嘴有限公司 | Hydraulic coupler of instant response type common-rail oil injector |
RU2731155C1 (en) * | 2019-07-05 | 2020-08-31 | федеральное государственное бюджетное образовательное учреждение высшего образования "Московский политехнический университет" (Московский Политех) | Electrically-hydraulic control nozzle |
-
1968
- 1968-08-28 CH CH1291168A patent/CH495504A/en not_active IP Right Cessation
-
1969
- 1969-06-25 FR FR6921318A patent/FR2016477A1/fr not_active Withdrawn
- 1969-07-02 DE DE19691933489 patent/DE1933489A1/en not_active Withdrawn
- 1969-07-23 US US844005A patent/US3610529A/en not_active Expired - Lifetime
- 1969-07-30 SE SE10681/69*A patent/SE348526B/xx unknown
- 1969-08-01 GB GB38689/69A patent/GB1277220A/en not_active Expired
- 1969-08-22 NL NL6912824.A patent/NL160913B/en not_active Application Discontinuation
- 1969-08-28 DK DK460069AA patent/DK130486B/en unknown
Cited By (72)
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US3680782A (en) * | 1969-10-24 | 1972-08-01 | Sopromi Soc Proc Modern Inject | Electromagnetic injectors |
US3773265A (en) * | 1970-08-19 | 1973-11-20 | Brico Eng | Electromagnetic fuel injectors |
US3777977A (en) * | 1971-07-08 | 1973-12-11 | Peugeot | Injection device |
US3797753A (en) * | 1971-10-28 | 1974-03-19 | Cav Ltd | Liquid fuel injection systems |
US3796379A (en) * | 1971-10-30 | 1974-03-12 | Cav Ltd | Fuel injection nozzle units |
USB541501I5 (en) * | 1972-06-12 | 1976-04-13 | ||
US4005826A (en) * | 1972-06-12 | 1977-02-01 | National Research Development Corporation | Injectors for the fuel injection systems of internal combustion engines |
US3893629A (en) * | 1973-08-29 | 1975-07-08 | Diesel Kiki Co | Fuel injection device for diesel engines |
US4033507A (en) * | 1975-01-15 | 1977-07-05 | Robert Bosch Gmbh | Fuel injection valve |
US4022166A (en) * | 1975-04-03 | 1977-05-10 | Teledyne Industries, Inc. | Piezoelectric fuel injector valve |
US4171099A (en) * | 1975-12-24 | 1979-10-16 | Robert Bosch Gmbh | Fuel injection nozzle for internal combustion engines |
DE2711391A1 (en) * | 1977-03-16 | 1978-09-21 | Bosch Gmbh Robert | FUEL INJECTOR |
US4164326A (en) * | 1978-04-06 | 1979-08-14 | General Motors Corporation | Electromagnetic fuel injector nozzle assembly |
US4394856A (en) * | 1981-06-29 | 1983-07-26 | General Motors Corporation | Compression operated injector with fuel injection control |
US4566416A (en) * | 1981-07-31 | 1986-01-28 | Stanadyne, Inc. | Accumulator nozzle fuel injection system |
US4561590A (en) * | 1981-12-28 | 1985-12-31 | Kabushiki Kaisha Komatsu Seisakusho | Fuel injection nozzle assembly |
US4603671A (en) * | 1983-08-17 | 1986-08-05 | Nippon Soken, Inc. | Fuel injector for an internal combustion engine |
EP0228578A1 (en) * | 1985-12-02 | 1987-07-15 | Marco Alfredo Ganser | Fuel injection device for internal combustion engines |
EP0426205A2 (en) * | 1985-12-02 | 1991-05-08 | Marco Alfredo Ganser | Device for the control of electro-hydraulically actuated fuel injectors |
US4826080A (en) * | 1985-12-02 | 1989-05-02 | Ganser Marco A | Fuel injection device for internal combustion engines |
EP0426205A3 (en) * | 1985-12-02 | 1991-06-12 | Marco Alfredo Ganser | Device for the control of electro-hydraulically actuated fuel injectors |
CH670682A5 (en) * | 1985-12-03 | 1989-06-30 | Marco Alfredo Ganser | Internal combustion engine accumulator injection device |
US4798186A (en) * | 1986-09-25 | 1989-01-17 | Ganser-Hydromag | Fuel injector unit |
US4946103A (en) * | 1987-12-02 | 1990-08-07 | Ganser-Hydromag | Electronically controlled fuel injector |
US5183209A (en) * | 1990-10-31 | 1993-02-02 | Elasis Sistema Ricerca Fiat Nel Mezzogiorno Societa Consortile Per Azioni | Assembly of an electromagnet core of an electromagnetic internal combustion engine fuel injector |
US5263645A (en) * | 1991-11-01 | 1993-11-23 | Paul Marius A | Fuel injector system |
US5464156A (en) * | 1991-12-24 | 1995-11-07 | Elasis Sistema Ricerca Fiat Nel Mizzogiorno Societa Consortile Per Azioni | Electromagnetic fuel injection valve |
US5355856A (en) * | 1992-07-23 | 1994-10-18 | Paul Marius A | High pressure differential fuel injector |
US5472142A (en) * | 1992-08-11 | 1995-12-05 | Nippondenso Co., Ltd. | Accumulator fuel injection apparatus |
US5458293A (en) * | 1992-12-23 | 1995-10-17 | Ganser-Hydromag | Fuel injection valve |
US5577667A (en) * | 1992-12-23 | 1996-11-26 | Ganser-Hydromag | Fuel injection valve |
US5560549A (en) * | 1992-12-29 | 1996-10-01 | Elasis Sistema Ricerca Fiat Nel Mezzogiorno | Fuel injector electromagnetic metering valve |
US5441028A (en) * | 1993-01-30 | 1995-08-15 | Robert Bosch Gmbh | Fuel injection device for internal combustion engines |
WO1996021102A1 (en) * | 1995-01-03 | 1996-07-11 | Servojet Products International | Conversion of jerk type injector to accumulator type injector |
US5553781A (en) * | 1995-01-03 | 1996-09-10 | Servojet Products International | Conversion of jerk type injector to accumulator type injector |
US5526791A (en) * | 1995-06-07 | 1996-06-18 | Diesel Technology Company | High-pressure electromagnetic fuel injector |
US5641121A (en) * | 1995-06-21 | 1997-06-24 | Servojet Products International | Conversion of non-accumulator-type hydraulic electronic unit injector to accumulator-type hydraulic electronic unit injector |
US5722600A (en) * | 1995-07-14 | 1998-03-03 | Isuzu Motors Limited | Fuel injection device for internal combustion engines |
US5826802A (en) * | 1995-11-17 | 1998-10-27 | Caterpillar Inc. | Damped check valve for fluid injector system |
US5758618A (en) * | 1996-01-30 | 1998-06-02 | Wartsila Diesel International Ltd Oy | Injection valve arrangement |
US5752659A (en) * | 1996-05-07 | 1998-05-19 | Caterpillar Inc. | Direct operated velocity controlled nozzle valve for a fluid injector |
US5984201A (en) * | 1996-10-10 | 1999-11-16 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engines |
US5709194A (en) * | 1996-12-09 | 1998-01-20 | Caterpillar Inc. | Method and apparatus for injecting fuel using control fluid to control the injection's pressure and time |
WO1999001660A1 (en) * | 1997-07-01 | 1999-01-14 | Robert Bosch Gmbh | Fuel injection valve |
CN1089855C (en) * | 1997-07-01 | 2002-08-28 | 罗伯特·博施有限公司 | Fuel injection valve |
DE19834867B4 (en) * | 1997-08-07 | 2007-05-31 | Avl List Gmbh | Injection nozzle for a direct-injection internal combustion engine |
US6247452B1 (en) * | 1997-10-09 | 2001-06-19 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engines |
WO1999030029A1 (en) | 1997-12-05 | 1999-06-17 | L'orange Gmbh | Injection valve for intermittent fuel injection |
EP0943797A1 (en) * | 1998-03-20 | 1999-09-22 | LUCAS INDUSTRIES public limited company | Fuel injector |
US6412706B1 (en) | 1998-03-20 | 2002-07-02 | Lucas Industries | Fuel injector |
US6527199B1 (en) * | 1999-09-04 | 2003-03-04 | Daimlerchrysler Ag | Fuel injection valve for an internal combustion engine |
WO2001038723A1 (en) * | 1999-11-19 | 2001-05-31 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engines |
US6598811B2 (en) * | 2000-07-10 | 2003-07-29 | Robert Bosch Gmbh | Pressure controlled injector for injecting fuel |
US6431472B1 (en) | 2000-12-21 | 2002-08-13 | Caterpillar Inc. | Fuel injector nozzle with outwardly opening check valve |
DE10136595A1 (en) * | 2001-07-30 | 2002-09-19 | Orange Gmbh | Fuel injector, for internal combustion engines, has control chamber bounded fluid-tight in direction of closing spring by insert through which fits connecting piece connected to nozzle needle and spring loaded by closing spring |
EP1284358A2 (en) * | 2001-08-14 | 2003-02-19 | C.R.F. Società Consortile per Azioni | Internal combustion engine fuel injector and its manufacturing method |
US20030051700A1 (en) * | 2001-08-14 | 2003-03-20 | Mario Ricco | Internal combustion engine fuel injector and relative fabrication method |
EP1284358A3 (en) * | 2001-08-14 | 2003-11-19 | C.R.F. Società Consortile per Azioni | Internal combustion engine fuel injector and its manufacturing method |
US6905083B2 (en) | 2001-08-14 | 2005-06-14 | C.R.F. SOCIETá CONSORTILE PER AZIONI | Internal combustion engine fuel injector and relative fabrication method |
DE10144889C1 (en) * | 2001-09-12 | 2003-04-17 | Bosch Gmbh Robert | Fuel injector, for direct fuel injection at an IC motor, has a feed drilling leading to a feed channel with an obtuse angle at their intersection, in a structure for optimum strength under high pressure |
DE10312913A1 (en) * | 2003-03-22 | 2004-10-07 | Robert Bosch Gmbh | Lift-controlled fuel injection valve for diesel engine has auxiliary piston connected to control chamber and guided in sealed manner in part with area larger than valve piston effective surface |
JP2005344623A (en) * | 2004-06-03 | 2005-12-15 | Bosch Corp | Fuel injection valve |
JP2005344622A (en) * | 2004-06-03 | 2005-12-15 | Bosch Corp | Fuel injection valve |
US20080283627A1 (en) * | 2006-01-23 | 2008-11-20 | Friedmar Dresig | Fuel Injector |
US20090020632A1 (en) * | 2006-02-24 | 2009-01-22 | Wolfgang Braun | Fuel Injection Device For An Internal Combustion Engine |
US8146839B2 (en) * | 2006-02-24 | 2012-04-03 | Robert Bosch Gmbh | Fuel injection device for an internal combustion engine |
US20120090577A1 (en) * | 2009-04-02 | 2012-04-19 | Robert Bosch Gmbh | Fuel injection device |
US9175652B2 (en) * | 2009-04-02 | 2015-11-03 | Robert Bosch Gmbh | Fuel injection device |
US20130081377A1 (en) * | 2010-06-22 | 2013-04-04 | Robert Bosch Gmbh | Device and method for metering a liquid into the exhaust tract of an internal combustion engine |
US9556768B2 (en) * | 2010-06-22 | 2017-01-31 | Robert Bosch Gmbh | Device and method for metering a liquid into the exhaust tract of an internal combustion engine |
WO2014206851A1 (en) * | 2013-06-26 | 2014-12-31 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engines |
US9719471B2 (en) | 2013-06-26 | 2017-08-01 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engines |
Also Published As
Publication number | Publication date |
---|---|
DK130486C (en) | 1975-09-01 |
DK130486B (en) | 1975-02-24 |
CH495504A (en) | 1970-08-31 |
GB1277220A (en) | 1972-06-07 |
NL160913B (en) | 1979-07-16 |
NL6912824A (en) | 1970-03-03 |
SE348526B (en) | 1972-09-04 |
DE1933489A1 (en) | 1970-03-05 |
FR2016477A1 (en) | 1970-05-08 |
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