CN117425773A - Electromagnetic fuel injection valve - Google Patents
Electromagnetic fuel injection valve Download PDFInfo
- Publication number
- CN117425773A CN117425773A CN202280036913.1A CN202280036913A CN117425773A CN 117425773 A CN117425773 A CN 117425773A CN 202280036913 A CN202280036913 A CN 202280036913A CN 117425773 A CN117425773 A CN 117425773A
- Authority
- CN
- China
- Prior art keywords
- valve
- movable core
- inner peripheral
- fuel injection
- cylindrical body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000446 fuel Substances 0.000 title claims description 57
- 238000002347 injection Methods 0.000 title claims description 32
- 239000007924 injection Substances 0.000 title claims description 32
- 230000002093 peripheral effect Effects 0.000 claims abstract description 38
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000000295 fuel oil Substances 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
- F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
By providing the guide portion (50) on the inner peripheral surface of the valve housing (2), the movable core (2) can be supported so as to be smoothly slid all the time, regardless of whether the movable core (12) is inclined or not. An annular guide part (50) is arranged on the inner peripheral surface of the valve housing (2), the guide part (50) takes a convex curved surface (50 a) as the inner peripheral surface, and the convex curved surface (50 a) supports the movable core (12) so as to be slidable and tiltable.
Description
Technical Field
The present invention relates generally to electromagnetic fuel injection valves used in fuel supply systems of engines.
Background
Conventionally, as an electromagnetic fuel injection valve for an engine, an electromagnetic fuel injection valve described in patent document 1 below is known. The electromagnetic fuel injection valve includes: a valve housing that is formed by coaxially coupling a magnetic cylindrical body and a rear end portion of a valve seat member having a valve seat at a front end portion, coupling a non-magnetic cylindrical body and a rear end portion of the magnetic cylindrical body, and coupling a fixed core and a rear end portion of the non-magnetic cylindrical body, respectively; a valve body cooperating with the valve seat in the valve housing; a movable core coupled to a rear end portion of the valve body, facing a front end surface of the fixed core, and supported by the valve housing so as to be slidable in an axial direction; a coil which is disposed on the outer periphery of the fixed core and generates attractive force between the fixed core and the movable core when the current is supplied; and a valve spring for biasing the movable core and the valve element in a valve closing direction of the valve element when the coil is energized.
Prior art literature
Patent literature
Patent document 1: japanese patent laid-open No. 2003-206820
Disclosure of Invention
Problems to be solved by the invention
However, in the electromagnetic fuel injection valve, it is an important issue to stabilize the fuel injection characteristic to smooth the axial sliding of the movable core. In order to solve the problem, in the device described in patent document 1, an annular guide portion having a cylindrical inner peripheral surface is provided so as to protrude from the inner peripheral surface of the valve housing, and the movable core is supported by the guide portion so as to be slidable in the axial direction (hereinafter, simply referred to as "sliding").
However, a sliding gap needs to be provided between the guide portion and the movable core. Therefore, the movable core may be slightly inclined by the sliding gap, and the outer peripheral surface of the movable core may be brought into contact with the edge portion, which is the end edge portion of the cylindrical inner peripheral surface of the guide portion, due to the inclination, and the surface pressure of the contact portion between the both may excessively increase, so that the fuel oil film existing in the contact portion may be broken, and thus, there may be a problem that not only smooth sliding of the movable core is impaired, but also abrasion resistance of the movable core may be lowered.
The present invention has been made in view of the above circumstances, and an object thereof is to provide an electromagnetic fuel injection valve of the following type: the movable core can be supported by a guide portion provided on the inner peripheral surface of the valve housing regardless of whether the movable core is inclined or not, and can be smoothly slid all the time, and the fuel injection characteristic is stable and the durability is high.
Means for solving the problems
In order to achieve the above object, the first feature of the present invention is as follows. The electromagnetic fuel injection valve is provided with: a valve housing that is formed by coaxially coupling a magnetic cylindrical body and a rear end portion of a valve seat member having a valve seat at a front end portion, coupling a non-magnetic cylindrical body and a rear end portion of the magnetic cylindrical body, and coupling a fixed core and a rear end portion of the non-magnetic cylindrical body, respectively; a valve element which cooperates with the valve seat in the valve housing; a movable core coupled to a rear end portion of the valve body, facing a front end surface of the fixed core, and supported by the valve housing so as to be slidable in an axial direction; a coil which is disposed on the outer periphery of the fixed core and generates attractive force between the fixed core and the movable core when energized; and a valve spring for biasing the movable core and the valve element in a valve closing direction of the valve element when the coil is energized, wherein an annular guide portion is provided on an inner peripheral surface of the valve housing, and the guide portion has a convex curved surface as an inner peripheral surface, the convex curved surface supporting the movable core so that the movable core is slidable and tiltable.
In addition, the second feature of the present invention is as follows. In addition to the first feature, the convex curved surface is formed along an arc surface on an inner peripheral side of a virtual circular ring formed by disposing a large circular center on a center line of the valve housing and disposing a small circular center on an outer side of the valve housing.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the first aspect of the present invention, since the inner peripheral surface of the guide portion is formed into the convex curved surface so as to support the movable core slidably and inclinably, the movable core and the guide portion are always in a curved contact state regardless of whether or not the movable core is inclined, and excessive rise of the surface pressure is not generated in the curved contact portion between the movable core and the guide portion, so that the fuel oil film interposed in the curved contact portion can be maintained. As a result, the movable core can be supported by the guide portion so as to be smoothly slid all the time, and the wear resistance of the movable core can be maintained, so that the stability and durability of the fuel injection characteristic of the electromagnetic fuel injection valve can be improved.
Further, according to the second aspect of the present invention, the convex curved surface of the guide portion is formed along the circular arc surface on the inner peripheral side of the virtual circular ring formed by disposing the large circular center on the center line of the valve housing and disposing the small circular center on the outer side of the valve housing, whereby the curvature of the convex curved surface is constant, and the curved surface contact state between the movable core and the guide portion can be always stabilized regardless of whether the movable core is inclined or not, and smoother sliding of the movable core can be ensured.
Drawings
Fig. 1 is a longitudinal sectional view showing an embodiment of an electromagnetic fuel injection valve for an engine according to the present invention.
Fig. 2 is an enlarged view of a portion indicated by an arrow 2 in fig. 1.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the electromagnetic fuel injection valve I of the present invention, the fuel injection side is set to the front and the fuel inlet side is set to the rear.
First, in fig. 1, a mounting hole 41 that opens into a combustion chamber 42 is provided in a cylinder head 40 of an engine E, and an electromagnetic fuel injection valve I that can inject fuel into the combustion chamber 42 is mounted in the mounting hole 41. At this time, the buffer member 43 is interposed between the fuel injection valve I and the cylinder head 40.
The valve housing 2 of the electromagnetic fuel injection valve I includes a cylindrical valve seat member 3, a magnetic cylindrical body 4 fitted to an outer peripheral surface of a rear end portion of the valve seat member 3 and welded in a fluid-tight manner, a non-magnetic cylindrical body 6 in contact with a rear end portion of the magnetic cylindrical body 4 and welded in a fluid-tight manner, a thick and hollow cylindrical fixed core 5 fitted to an inner peripheral surface of the non-magnetic cylindrical body 6 with a small-diameter front end portion 5a and welded in a fluid-tight manner, and a fuel inlet tube 26 fitted to an outer peripheral surface of a rear end portion of the fixed core 5 and welded in a fluid-tight manner.
The valve seat member 3 has a valve hole 7 opened at a front end surface thereof, a conical valve seat 8 connected to an inner peripheral end of the valve hole 7, and a cylindrical guide hole 9 connected to a large diameter portion of the valve seat 8. An injector plate 10 made of steel plate is welded to the front end surface of the valve seat member 3 in a liquid-tight manner, and the injector plate 10 has a plurality of fuel injection holes 11 communicating with the valve hole 7.
A portion that is not fitted to the fixed core 5 is left at the front end portion of the non-magnetic cylindrical body 6, and a hollow cylindrical movable core 12 is fitted into the magnetic cylindrical body 4 from this portion, the movable core 12 being opposed to the front end surface of the fixed core 5, and a valve element 13 being connected to the movable core 12.
The valve body 13 is composed of a spherical valve portion 14 and a valve stem 15, and the valve portion 14 is slidable in the guide hole 9 to open and close the valve hole 7 in cooperation with the valve seat 8; the front end portion of the valve rod 15 is fixed to the valve portion 14, and the rear end portion of the valve rod 15 is press-fitted to the inner peripheral surface of the movable core 12 and welded thereto. Therefore, the valve body 13 can be lifted and lowered in the valve housing integrally with the movable core 12.
The valve rod 15 is formed of a pipe material having a slit 15a, the interior of which communicates with the hollow portion of the movable core 12, and the interior and exterior of the valve rod 15 communicate via the slit 15 a. Further, a plurality of flat surfaces 17 allowing the fuel to pass through are formed around the spherical valve portion 14.
The fuel inlet tube 26, the fixed core 5, the retainer 20, the hollow portions of the movable core 12 and the valve stem 15, the slit 15a of the valve stem 15, the guide hole 9 of the valve seat member 3, the valve hole 7, and the fuel injection hole 11 constitute a series of fuel passages 18 in the valve housing 2.
In fig. 1 and 2, a retainer 20 made of a notched pipe is press-fitted and fixed to the middle portion of the hollow portion of the fixed core 5, and the front end portion thereof is formed into a first spring seat 21. On the other hand, the rear end portion of the valve rod 15 terminates in the middle of the hollow portion of the movable core 12, the upper end portion thereof constitutes a second spring seat 22, a valve spring 23 is provided between the first spring seat 21 and the second spring seat 22 so as to be compressed, and the movable core 12 is biased in a direction away from the fixed core 5 in the forward direction, that is, in the closing direction of the valve body 13 by a set load of the valve spring 23. The setting load of the valve spring 23 is adjusted by the fitting depth of the retainer 20 to the fixed core 5.
An annular stopper 35 made of a non-magnetic material and slightly protruding from the rear end surface thereof is embedded in the inner peripheral surface of the movable core 12.
Returning again to fig. 1, a coil assembly 28 is fitted to the outer periphery of the valve housing 2 in correspondence with the fixed core 5 and the movable core 12. The coil assembly 28 is composed of a synthetic resin bobbin 29 and a coil 30 wound around the bobbin 29, the bobbin 29 is fitted on the outer peripheral surface of the magnetic cylindrical body 4 from the rear end portion to the fixed core 5, a terminal support arm 29a is integrally formed at the rear end portion of the bobbin 29, the terminal support arm 29a supports the base end portion of a power supply terminal 33 protruding to one side of the bobbin 29, and the tip end of the coil 30 is connected to the power supply terminal 33. The coil assembly 28 has a substantially half peripheral surface covered with a yoke 31.
A synthetic resin coating layer 27 is injection-molded, and the coating layer 27 covers the outer peripheral surfaces of the magnetic cylindrical body 4 and the fuel inlet tube 26, and encloses the coil assembly 28. At this time, the coupler 34 which accommodates and holds the power supply terminal 33 and protrudes to one side of the coil assembly 28 is integrally formed with the cover 27.
A fuel filter 36 is attached to the inlet of the fuel inlet tank 26. The fuel cap 46 is fitted to the outer periphery of the upper end of the fuel inlet tube 26 via a seal member 47. The fuel cap 46 is one of a plurality of fuel distribution caps branched from a fuel rail 45 connected to a discharge port of a fuel pump (not shown).
As is clear from fig. 2, an annular guide 50 is provided so as to protrude from the inner peripheral surface of the nonmagnetic cylindrical body 6 protruding forward of the fixed core 5. The inner peripheral surface of the guide 50 is formed of a convex curved surface 50a, and thereby the movable core 12 is supported slidably and tiltably.
In forming the convex curved surface 50a, a virtual ring T having a large circular center Ob disposed on a center line Y of the valve housing 2 (a line passing through the center of the valve seat 8) and a small circular center Os disposed radially outward of the non-magnetic cylindrical body 6 is set, and the convex curved surface 50a is formed along an arc surface on the inner circumferential side of the virtual ring T. The inner peripheral surface of the magnetic cylindrical body 4 is retreated radially outward from the convex curved surface 50a.
Next, the operation of the present embodiment will be described.
In a state where the energization of the coil 30 is stopped, the movable core 12 and the valve body 13 are pushed forward by the biasing force of the valve spring 23, and the valve portion 14 of the valve body 13 is seated on the valve seat 8, thereby closing the valve hole 7. The high-pressure fuel, which is fed under pressure from a fuel pump, not shown, to the fuel inlet tube 26 fills the valve housing 2 with a series of fuel passages 18 upstream of the valve hole 7, and waits.
When the coil 30 is in the energized state, the magnetic flux generated by the coil 30 sequentially passes through the yoke 31, the magnetic cylinder 4, the movable core 12, and the fixed core 5, and the attractive force caused by the magnetic force generated between the two cores 5, 12 causes the movable core 12 to be adsorbed by the fixed core 5 against the set load of the valve spring 23, unseats the valve portion 14 of the valve element 13 from the valve seat 8, and releases the valve hole 7 as soon as the high-pressure fuel waiting in the fuel flow path 18 is directly injected from the fuel injection hole 11 to the combustion chamber 42 of the engine E via the valve hole 7.
At this time, the stopper 35 protruding from the rear end surface of the movable core 12 abuts against the front end surface of the fixed core 5, and a predetermined gap remains between the opposing end surfaces of the fixed core 5 and the movable core 12, so that when the energization of the coil 30 described later is turned off, the residual magnetism between the two cores 5 and 12 is reduced, and the valve closing responsiveness of the valve element 13 is improved.
When the coil 30 is in the state of being energized and disconnected, the movable core 12 is released from the attractive force from the fixed core 5, and therefore, the valve spring 23 moves the movable core 12 away from the fixed core 5 by its set load, thereby closing the valve element 13 and stopping the injection of fuel from the fuel injection hole 11.
As described above, the movable core 12 that opens and closes the valve element 13 is slidably and tiltably supported by the inner peripheral surface of the guide portion 50 of the non-magnetic cylindrical body 6, that is, the convex curved surface 50a, and therefore, the movable core 12 and the guide portion 50 are brought into curved contact with each other. Therefore, even if the movable core 12 is slightly inclined due to the sliding gap existing between the movable core 12 and the guide portion 50, the curved surface contact state between the movable core 12 and the guide portion 50 is maintained, and an excessive increase in the surface pressure of the contact portion can be suppressed, and the fuel oil film interposed between the contact portion can be prevented from breaking.
In this way, the guide 50 supports the movable core 12 so that the movable core 12 can slide and tilt smoothly at all times, and can maintain the wear resistance of the movable core 12, thereby contributing to improvement in the stability and durability of the fuel injection characteristic of the electromagnetic fuel injection valve I.
In particular, in the case where the convex curved surface 50a of the guide portion 50 is formed along the circular arc surface on the inner peripheral side of the virtual circular ring T, even when the movable core 12 is tilted, the curved surface contact state between the movable core 12 and the guide portion 50 is not changed, and a smoother sliding of the movable core 12 can be ensured.
The embodiments of the present invention have been described above, but the present invention is not limited to the above description. Various design changes can be made without departing from the spirit thereof.
Symbol description
Electromagnetic fuel injection valve
Ob. center of great circle
Os. center of small circle
T. virtual ring
Center line of valve housing
Valve housing
Valve seat component
Magnetic cylinder
Fixed core
Non-magnetic cylinder
Valve seat
Movable core
Valve core
Coil
Guide part
50a.
Claim (modification according to treaty 19)
1. An electromagnetic fuel injection valve (after modification) comprising:
a valve housing (2) in which a magnetic cylindrical body (4) is coupled to the rear end of a valve seat member (3) having a valve seat (8) at the front end, a non-magnetic cylindrical body (6) is coupled to the rear end of the magnetic cylindrical body (4), and a fixed core is coupled to the rear end of the non-magnetic cylindrical body (6), respectively, in a coaxial manner; a valve element (13) which cooperates with the valve seat (8) in the valve housing (2); a movable core (12) that is coupled to the rear end of the valve body (13), faces the front end surface of the fixed core (5), and is supported by the non-magnetic cylindrical body (6) so as to be slidable in the axial direction; a coil (30) which is disposed on the outer periphery of the fixed core (5) and generates attractive force between the fixed core (5) and the movable core (12) when energized; a valve spring (23) for biasing the movable core (12) and the valve body (13) in the valve closing direction of the valve body (13) when the energization of the coil (30) is interrupted,
the electromagnetic fuel injection valve is characterized in that,
the front of the fixed core (5) is formed in a hollow cylinder shape by the wall thickness of a small diameter front end part (5 a) jogged with the inner peripheral surface of the non-magnetic cylinder body (6) and welded in a liquid-tight way, the front end part of the non-magnetic cylinder body (6) is provided with a part not jogged with the fixed core (5), the front end part of the inner peripheral surface of the non-magnetic cylinder body (6) is provided with a ring-shaped guide part (50), the guide part (50) takes a convex curved surface (50 a) as the inner peripheral surface, the convex curved surface (50 a) supports the movable core (12) so as to enable the movable core to slide and tilt,
the convex curved surface (50 a) has a constant curvature along the circular arc surface on the inner peripheral side of a virtual circular ring (T), the virtual circular ring (T) is provided with a large circular center (Ob) on the central line (Y) of the valve housing (2), and a small circular center (Os) is provided on the outer side of the valve housing (2),
the inner peripheral surface of the magnetic cylindrical body (4) is formed to be retreated to the radial outside of the convex curved surface (50 a), and the virtual circular ring (T) is set so that the small circular center (Os) is arranged to the radial outside of the non-magnetic cylindrical body (6).
2. (delete)
Description or statement (modification according to clause 19)
1. Modification matters
In claim 1, the following matters (a) to (g) are clarified.
(a) The movable core (12) is supported by the non-magnetic cylinder (6);
(b) The front of the fixed core (5) is formed into a hollow cylinder shape by the wall thickness of the front end (5 a) with small diameter, which is embedded with the inner peripheral surface of the non-magnetic cylinder body (6) and welded in a liquid-tight way;
(c) The front end of the non-magnetic cylinder (6) is provided with a part which is not embedded with the fixed core (5);
(d) A guide part (50) is arranged at the front end part of the inner peripheral surface of the non-magnetic cylinder body (6);
(e) The convex curved surface (50 a) is formed along the arc surface of the inner circumference side of a virtual circular ring (T) with a constant curvature, wherein the virtual circular ring (T) is provided with a large circular center (Ob) on the central line (Y) of the valve housing (2), and a small circular center (Os) on the outer side of the valve housing (2);
(f) The inner peripheral surface of the magnetic cylinder body (4) is formed in a manner of retreating to the outer side in the radial direction than the convex curved surface (50 a);
(g) The virtual ring (T) is set so that the small circle center (Os) is arranged radially outside the non-magnetic cylindrical body (6).
2. Modified influence
The above-described modifications are not described in references 1 and 2 cited in the international survey report. The above modification can reliably achieve the effects described in paragraphs 0031 to 0033 of the specification at the time of application.
Claims (2)
1. An electromagnetic fuel injection valve, comprising:
a valve housing (2) in which a magnetic cylindrical body (4) is coupled to a rear end portion of a valve seat member (3) having a valve seat (8) at a front end portion, a non-magnetic cylindrical body (6) is coupled to a rear end portion of the magnetic cylindrical body (4), and a fixed core is coupled to a rear end portion of the non-magnetic cylindrical body (6), respectively, in a coaxial manner; a valve element (13) which cooperates with the valve seat (8) in the valve housing (2); a movable core (12) that is coupled to the rear end of the valve body (13), faces the front end surface of the fixed core (5), and is supported by the valve housing (2) so as to be slidable in the axial direction; a coil (30) which is disposed on the outer periphery of the fixed core (5) and generates attractive force between the fixed core (5) and the movable core (12) when energized; a valve spring (23) for biasing the movable core (12) and the valve body (13) in the valve closing direction of the valve body (13) when the energization of the coil (30) is interrupted,
the electromagnetic fuel injection valve is characterized in that,
an annular guide portion (50) is provided on the inner peripheral surface of the valve housing (2), and the guide portion (50) has a convex curved surface (50 a) that slidably and tiltably supports the movable core (12) as the inner peripheral surface.
2. The electromagnetic fuel injection valve of claim 1 wherein the fuel injector is configured to inject fuel into the fuel injector,
the convex curved surface (50 a) is formed along an arc surface on the inner peripheral side of a virtual circular ring (T), the virtual circular ring (T) is provided with a large circular center (Ob) on the center line (Y) of the valve housing (2), and a small circular center (Os) on the outer side of the valve housing (2).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021-091881 | 2021-05-31 | ||
| JP2021091881 | 2021-05-31 | ||
| PCT/JP2022/018334 WO2022254988A1 (en) | 2021-05-31 | 2022-04-20 | Electromagnetic fuel injection valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117425773A true CN117425773A (en) | 2024-01-19 |
Family
ID=84323107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202280036913.1A Pending CN117425773A (en) | 2021-05-31 | 2022-04-20 | Electromagnetic fuel injection valve |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP7449451B2 (en) |
| CN (1) | CN117425773A (en) |
| WO (1) | WO2022254988A1 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19503820C2 (en) * | 1995-02-06 | 2003-10-16 | Bosch Gmbh Robert | Electromagnetically actuated valve and method for producing a guide on a valve |
| JP2002089399A (en) | 2000-09-12 | 2002-03-27 | Keihin Corp | Electromagnetic fuel injection valve |
| JP6546044B2 (en) | 2015-09-04 | 2019-07-17 | 日立オートモティブシステムズ株式会社 | Fuel injection valve |
-
2022
- 2022-04-20 JP JP2023525656A patent/JP7449451B2/en active Active
- 2022-04-20 CN CN202280036913.1A patent/CN117425773A/en active Pending
- 2022-04-20 WO PCT/JP2022/018334 patent/WO2022254988A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| JP7449451B2 (en) | 2024-03-13 |
| JPWO2022254988A1 (en) | 2022-12-08 |
| WO2022254988A1 (en) | 2022-12-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2570648B1 (en) | Electromagnetic fuel-injection valve | |
| US6758420B2 (en) | Fuel injection valve | |
| JP5239965B2 (en) | Fuel injection valve | |
| US20030052203A1 (en) | Fuel injection valve | |
| US7814886B2 (en) | Shut-off valve for controlling the flow rate of a fuel pump for an internal combustion engine | |
| US6223727B1 (en) | Seal member mounting structure in electromagnetic fuel injection valve | |
| US6851630B2 (en) | Electromagnetic fuel injection valve | |
| CN110214225B (en) | Solenoid valve device for a fuel injector for injecting liquid and/or gaseous fuel | |
| JP2010261396A (en) | Fuel injection valve | |
| JPH0457870B2 (en) | ||
| US6648298B2 (en) | Electromagnetic fuel injection valve | |
| JP3841457B2 (en) | Electromagnet for fuel injector metering valve control | |
| US6443132B1 (en) | Internal combustion engine fuel injector | |
| US11421635B2 (en) | Electromagnetic fuel injection valve | |
| CN117425773A (en) | Electromagnetic fuel injection valve | |
| US6869034B2 (en) | Fuel injector valve | |
| CN113175402B (en) | Electromagnetic fuel injection valve | |
| CN113294274B (en) | Electromagnetic fuel injection valve | |
| JP4241599B2 (en) | Fuel injection valve | |
| US11486343B2 (en) | Electromagnetic fuel injection valve | |
| JP2024070166A (en) | Electromagnetic fuel injection valve | |
| JP2024010605A (en) | electromagnetic fuel injection valve | |
| CN117321300A (en) | Electromagnetic fuel injection valve | |
| CN115151723A (en) | Fuel injector for injecting fuel | |
| JP2024035691A (en) | electromagnetic fuel injection valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |