JP4114205B2 - Fuel injection valve - Google Patents

Description

  The present invention relates to a fuel injection valve in which an injection hole for injecting fuel into an internal combustion engine (hereinafter, the internal combustion engine is referred to as an “engine”) is formed in an injection hole member.

  2. Description of the Related Art Conventionally, there is known a fuel injection valve including an injection hole member (hereinafter referred to as “injection hole plate”) having an injection hole that is inclined in a direction away from the central axis of the valve body from the valve body side toward the counter valve body side. (For example, refer to Patent Document 1). The nozzle hole disclosed in FIG. 4 or FIG. 7 of Patent Document 1 is designed such that the inclination angles α1 and α2 are larger than 0 degrees, and therefore, the nozzle hole is separated from the central axis of the valve body from the valve body side to the counter valve body side. Inclined in the direction. When the nozzle hole is inclined in this way, fuel can be injected over a wide area.

The nozzle plate described in Patent Document 1 has only four nozzle holes, but may have more nozzle holes. Specifically, for example, an injection hole plate having a plurality of injection holes in each region divided by a predetermined virtual straight line on the surface facing the valve member side of the injection hole plate is also known.
Hereinafter, an injection hole plate having a plurality of injection holes in each region divided by a virtual straight line will be described.

  FIG. 11A is an enlarged schematic diagram showing an injection hole plate having a plurality of injection holes in each region divided by a virtual straight line. FIG. 11A shows a case where the nozzle hole plate is viewed from the valve body side. The injection hole plate 100 in the example shown in the figure is divided into four regions by two virtual straight lines 102 and 103 intersecting on the central axis 101 of the valve body, and each region has three injection holes. Specifically, the region 121 has injection holes 111a, 111b, and 111c, the region 122 has injection holes 112a, 112b, and 112c, the region 123 has injection holes 113a, 113b, and 113c, and the region 124 It has holes 114a, 114b and 114c. Each nozzle hole in the figure is inclined in a direction in which the nozzle hole axis is separated from the central axis of the valve body from the valve body side toward the counter valve body side.

Japanese Patent Laid-Open No. 9-14090

However, if each region has a plurality of nozzle holes and they are all inclined in a direction away from the central axis, the injection space becomes narrow because the plurality of nozzle holes in the same region inject fuel in the same direction. However, there is a problem that atomization deteriorates because the fuel injected in the form of a liquid column interferes with each other before spraying.
FIG. 11B is a schematic diagram showing a state in which fuels injected in a liquid column shape from the nozzle hole plate 100 shown in FIG. 11A interfere with each other. Here, the liquid column 131 is a liquid column ejected from the nozzle hole 113a, the liquid column 132 is a liquid column ejected from the nozzle hole 113b, and the liquid column 133 is a liquid column ejected from the nozzle hole 113c. In the nozzle hole plate 100 shown in the drawing, the interference between the liquid column 131 and the liquid column 132 starts from a position indicated by a broken line 134. When a plurality of nozzle holes in the same region inject fuel in the same direction, the liquid column interference position becomes close to the injection plate 100, and interference occurs before the fuel is scattered from the liquid column to the spray, resulting in deterioration of atomization.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a fuel injection valve that reduces interference between liquid columns and promotes dispersion from the liquid column to the spray to promote atomization of fuel.

According to the first and third aspects of the present invention, the fuel injected by the nozzle holes inclined toward the virtual straight line in each region is injected across the virtual straight line when viewed from above, and is separated from any virtual straight line. The fuel injected by the nozzle holes inclined to the side is injected without straddling the virtual straight line. For this reason, fuel is injected in one direction from an injection hole that is inclined toward the side away from the virtual straight line in a certain region and an injection hole that is inclined toward the virtual straight line in another region. When the nozzle holes are arranged in this way, the distance between the nozzle holes for injecting fuel in one direction is separated, so that interference between liquid columns injected in the same direction can be reduced. For this reason, the dispersion of the fuel from the liquid column to the spray is promoted, and the atomization of the fuel can be promoted.

Further , the distance from the nozzle hole inclined to the virtual straight line side to the central axis of the valve body is different from the distance from the nozzle hole inclined to the side away from the virtual straight line to the central axis of the valve body. For this reason, the liquid column ejected from the nozzle hole inclined toward the imaginary straight line and the liquid column ejected in another direction from the nozzle hole inclined toward the side away from the imaginary straight line are unlikely to interfere with each other. For this reason, the dispersion of the fuel from the liquid column to the spray is promoted, and the atomization of the fuel can be further promoted.

Furthermore , since it is equally divided into two or more regions by one or more virtual straight lines, fuel can be evenly injected from each region.
According to the second aspect of the present invention, the liquid column is ejected from the nozzle hole inclined toward the imaginary straight line side of a certain region, and the nozzle is ejected from the nozzle hole inclined toward the imaginary straight line side of the region adjacent to the region. Since the liquid column to be applied does not cross the same virtual straight line, the interference between the liquid columns ejected across the virtual straight line can be reduced.

Hereinafter, a plurality of embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
FIG. 2 is a cross-sectional view of an injector as a fuel injection valve according to the first embodiment of the present invention. The injector 10 according to the first embodiment is applied to, for example, a direct injection type gasoline engine. The injector 10 may be applied not only to a direct-injection gasoline engine but also to a premixed gasoline engine or a diesel engine. When the injector 10 according to the first embodiment is applied to a direct injection gasoline engine, the injector 10 is mounted on an engine head (not shown).

  The housing 11 of the injector 10 is formed in a cylindrical shape. The housing 11 has a first magnetic part 12, a nonmagnetic part 13, and a second magnetic part 14. The nonmagnetic part 13 prevents a magnetic short circuit between the first magnetic part 12 and the second magnetic part 14. The fixed core 15 is formed in a cylindrical shape from a magnetic material. The fixed core 15 is fixed coaxially with the housing 11 on the inner peripheral side of the housing 11. The movable core 16 is formed in a cylindrical shape from a magnetic material and is accommodated on the inner peripheral side of the housing 11. The movable core 16 can reciprocate in the axial direction on the inner peripheral side of the housing 11.

  A spool 17 is mounted on the outer peripheral side of the housing 11. A coil 18 is wound around the spool 17. The outer peripheral side of the spool 17 and the coil 18 is covered with a resin mold 19. The coil 18 is connected to a terminal 21 embedded in a connector 20 formed by a resin mold 19. When the coil 18 is energized via the terminal 21, a magnetic attractive force is generated between the fixed core 15 and the movable core 16.

  The adjusting pipe 22 is press-fitted on the inner peripheral side of the fixed core 15. A fuel passage 23 is formed on the inner peripheral side of the adjusting pipe 22. The adjusting pipe 22 is in contact with the spring 24 at the end on the movable core 16 side. One end of the spring 24 is in contact with the adjusting pipe 22, and the other end is in contact with the movable core 16. As a result, the spring 24 biases the movable core 16 toward the anti-fixed core. By adjusting the press-fitting amount of the adjusting pipe 22, the load of the spring 24 that biases the movable core 16 is adjusted.

The housing 11 has a fuel inlet 25 to which fuel is supplied from a fuel tank (not shown). The fuel flowing in from the fuel inlet 25 flows into the inner peripheral side of the housing 11 through the filter 26. The filter 26 removes foreign matters contained in the fuel.
The nozzle holder 27 is formed in a cylindrical shape and is connected to the end of the housing 11. A valve body 30 is fixed to the inner peripheral side of the nozzle holder 27. The valve body 30 is formed in a cylindrical shape, and is fixed to the nozzle holder 27 by, for example, press fitting or welding.

  FIG. 3 is an enlarged cross-sectional view of a main part of the injector. The valve body 30 has a conical valve seat 31 whose inner diameter decreases toward the inner wall 30a toward the tip. Between the end of the valve body 30 on the opposite side of the housing and the nozzle holder 27, an injection hole plate 40 as an injection hole member is installed. A nozzle hole is formed in the nozzle hole plate 40.

  The nozzle needle 32 as a valve member is accommodated in the housing 11, the nozzle holder 27, and the inner peripheral side of the valve body 30 so as to be capable of reciprocating in the axial direction. The nozzle needle 32 is disposed coaxially with the valve body 30. One end of the nozzle needle 32 is connected to the movable core 16. Thereby, the nozzle needle 32 can reciprocate in the axial direction integrally with the movable core 16. A contact portion 33 that can be seated on the valve seat 31 of the valve body 30 is formed at the end of the nozzle needle 32 on the side opposite to the movable core. A fuel passage 34 through which fuel flows is formed between the nozzle needle 32 and the valve body 30. A conical portion 35 is formed on the tip end side of the nozzle needle 32, that is, on the nozzle hole plate 40 side. Further, on the downstream side of the fuel flow with respect to the contact portion 33, the fuel is enclosed in a space surrounded by the outer wall surface of the nozzle needle 32, the inner wall surface 30 a of the valve body 30, and the surface of the injection hole plate 40 on the valve body 30 side. A chamber 36 is formed. The fuel chamber 36 is formed in a flat substantially truncated cone shape.

  The fuel that has flowed into the inner peripheral side of the housing 11 from the fuel inlet 25 passes through the filter 26, the fuel passage 23 formed on the inner peripheral side of the adjusting pipe 22, and the inner peripheral side of the fixed core 15. 16 flows to the inner peripheral side. The fuel on the inner peripheral side of the movable core 16 flows between the housing 11 and the nozzle needle 32 via the fuel hole 28 that connects the inner periphery and the outer periphery of the movable core 16. The fuel flows into the fuel passage 34 formed between the valve body 30 and the nozzle needle 32 via the nozzle holder 27 and the nozzle needle 32.

When the coil 18 is not energized, the nozzle needle 32 is moved downward in FIG. 2 together with the movable core 16 by the urging force of the spring 24. Therefore, the contact portion 33 is seated on the valve seat 31, and the fuel passage 34 and the fuel chamber 36 are not in communication. As a result, the fuel flowing from the fuel passage 34 into the fuel chamber 36 is not injected from the injection hole.
When the coil 18 is energized, a magnetic attractive force is generated between the fixed core 15 and the movable core 16. Thereby, the movable core 16 and the nozzle needle 32 integral with the movable core 16 move upward in FIG. 2, that is, toward the fixed core 15 against the urging force of the spring 24. Therefore, the contact portion 33 is separated from the valve seat 31 and the fuel passage 34 and the fuel chamber 36 communicate with each other. As a result, the fuel flowing from the fuel passage 34 into the fuel chamber 36 is injected from the injection hole.

  When energization of the coil 18 is stopped, the magnetic attractive force between the fixed core 15 and the movable core 16 disappears. Thereby, the movable core 16 and the nozzle needle 32 integral with the movable core 16 are moved downward in FIG. 2 by the urging force of the spring 24. Therefore, the contact portion 33 is again seated on the valve seat 31, and the communication between the fuel passage 34 and the fuel chamber 36 is blocked. As a result, fuel does not flow from the fuel chamber 36 into the nozzle hole, and fuel injection is terminated.

  The nozzle hole plate 40 is attached to the distal end side of the valve body 30, that is, the side opposite to the housing. That is, the nozzle hole plate 40 is installed on the downstream side of the fuel flow with respect to the valve seat 31. The nozzle hole plate 40 is formed in a cup shape coaxial with the valve body 30 and has a nozzle hole formed at the bottom. Each nozzle hole communicates with the fuel chamber 36 on the fuel inlet side.

Next, details of the nozzle hole plate 40 will be described.
4A is a top view of the nozzle hole plate 40 viewed from the valve body 30 side, and FIG. 4B is a cross-sectional view of the imaginary straight line 42 shown in FIG. 4A. As shown in FIG. 4A, the nozzle hole plate 40 is divided into a plurality of regions by a virtual straight line extending on the surface facing the valve member, and each region has a plurality of nozzle holes. Specifically, two virtual straight lines 42 and virtual straight lines 43 that intersect on the central axis of the valve body 30 are equally divided into four regions, and each region has three nozzle holes. Details of the nozzle holes will be described later. Here, the central axis of the valve body 30 is a straight line passing through the point 48 in FIG. 4A and perpendicular to the paper surface. The number of regions to be divided can be arbitrarily set according to the performance of the engine to which the injector 10 is applied. Further, the number of nozzle holes provided in one region can be set to an arbitrary number of 2 or more according to the performance of the engine to which the injector 10 is applied.

  FIG. 1A is an enlarged top view showing the nozzle hole plate 40 viewed from the valve body 30 side. The nozzle hole plate 40 has nozzle holes 44a, 44b and 44c in the region 51, the nozzle hole 45a, 45b and 45c in the region 52, the nozzle hole 46a, 46b and 46c in the region 53, and the region 54. Have nozzle holes 47a, 47b and 47c. FIG. 1B is an enlarged top view showing the nozzle hole 45b. The line NN shown in FIG. 1B is a line that overlaps the nozzle hole axis 49a (see FIG. 1D) of the nozzle hole 45b when the nozzle hole 45b is viewed from above, and as shown in the figure, the nozzle hole 45b. The nozzle hole axis is inclined toward the imaginary straight line 42 from the valve body 30 side toward the counter valve body 30 side. The same applies to the nozzle holes 47b shown in FIG. FIG. 1C is an enlarged top view showing the nozzle hole 44b. A line KK shown in FIG. 1 (C) is a line that overlaps the nozzle hole axis 49b (see FIG. 1 (E)) of the nozzle hole 44b when the nozzle hole 44b is viewed from above, and as shown in the figure, the nozzle hole 44b. Is inclined gently toward the virtual straight line 43 side from the valve body 30 side toward the counter valve body 30 side. The same applies to the nozzle holes 46b shown in FIG. All the other nozzle holes are inclined so that the nozzle hole axis is away from the virtual straight line 42 and the virtual straight line 43 from the valve body 30 side to the counter valve body 30 side.

  The nozzle holes inclined to the virtual straight line side arranged in the same region and the nozzle holes inclined to the side away from any virtual straight line are arranged offset in the radial direction. For example, all the nozzle holes inclined toward the virtual straight line are on a virtual circle 75 centered on the central axis, and all the nozzle holes inclined toward the side away from the virtual straight line are virtual concentric with the circle 75. It is on the circle 76. Since the radius of the circle 76 is larger than that of the circle 75, the nozzle hole inclined to the virtual straight line side and the nozzle hole inclined to the side away from the virtual straight line are arranged so as to be shifted in the radial direction. Become. With this arrangement, for example, the liquid columns ejected by the nozzle holes 44a and 44c and the liquid columns ejected by the nozzle holes 44b are less likely to interfere with each other. The atomization of fuel can be further promoted.

  In addition, each nozzle hole whose nozzle hole axis is inclined toward the imaginary straight line has its nozzle hole axis toward an imaginary straight line that is different from the nozzle hole whose nozzle hole axis is inclined toward the imaginary straight line in the adjacent region. Inclined. For example, the injection hole 44b is inclined toward the virtual straight line 43, which is a virtual straight line different from the virtual straight line 42 where the injection hole 45b of the adjacent region 52 and the injection hole 47b of the adjacent region 54 are inclined. When tilted in this way, the liquid column ejected from the nozzle hole 44b does not straddle the same virtual straight line as the liquid column ejected from the nozzle hole 45b or the nozzle hole 47b, so the liquid column ejected across the virtual line Interference between each other can be reduced.

1D is a cross-sectional view taken along line NN shown in FIG. 1B, and FIG. 1E is a cross-sectional view taken along line KK shown in FIG. All the nozzle holes of the present embodiment are so-called tapered nozzle holes whose opening area on the fuel outlet side is wider than the opening area on the fuel inlet side as shown in the figure.
FIG. 5 is a schematic diagram showing the direction in which fuel is injected. FIG. 5 is a view of the nozzle hole plate 40 as viewed from the opposite side of the valve body 30. Specifically, FIG. As illustrated, the nozzle hole 44a and the nozzle hole 44c in the region 51 and the nozzle hole 47b in the region 54 inject fuel in the V direction. The injection holes 47a and 47c in the region 54 and the injection holes 46b in the region 53 inject fuel in the W direction. The nozzle holes 45a and 45c in the region 52 and the nozzle holes 44b in the region 51 inject fuel in the Y direction. The injection holes 46a and 46c in the region 53 and the injection holes 45b in the region 52 inject fuel in the Z direction. Accordingly, in one direction, fuel is injected by two nozzle holes arranged in one region and one nozzle hole arranged in one of two adjacent regions. Is done.

Next, the effect of the injector 10 will be described.
FIG. 6 is a schematic view showing liquid column interference by the nozzle hole plate 40 of the present invention. Here, the liquid column 61 is a liquid column ejected from the nozzle hole 47b, the liquid column 62 is a liquid column ejected from the nozzle hole 44c, and the liquid column 63 is a liquid column ejected from the nozzle hole 44a. As shown in the figure, since the nozzle hole 44c and the nozzle hole 47b are separated from each other, the position 64 where the interference between the liquid column 62 and the liquid column 61 starts is farther from the nozzle plate than the conventional position. Therefore, interference between the liquid columns ejected in the same direction is reduced.

  7A and 7B are schematic views of the state in which the fuel interferes as viewed from the counter valve body 30 side. FIG. 7A is a conventional nozzle hole plate 100 as a comparative example, and FIG. A hole plate 40 is shown. As is apparent from FIG. 7B, the injection hole is used more effectively in the nozzle hole plate 40 of the present invention, and in particular, the liquid column 71 injected from the nozzle hole 45b and the liquid column injected from the nozzle hole 47b. 72 shows that interference with other liquid columns is reduced as compared with the conventional case. Further, it can be seen that the liquid column 73 ejected from the nozzle hole 44b and the liquid column 74 ejected from the nozzle hole 46b also have less interference with other liquid columns than in the prior art.

As described above, according to the injector 10 according to the embodiment of the present invention, interference between liquid columns can be reduced. Therefore, the dispersion of the fuel from the liquid column to the spray is promoted, and atomization can be promoted.
Further, according to the injector 10, the surface of the nozzle hole plate 40 facing the counter valve body 30 side is equally divided into two or more regions by one or more virtual straight lines, so that fuel is evenly injected from each region. be able to.
(Second embodiment)
The second embodiment is an example when the nozzle hole is a straight nozzle hole.

8A is a top view of the nozzle hole plate 80 according to the second embodiment as viewed from the valve body 30 side, and FIG. 8B is an enlarged top view of the nozzle hole plate 80 as viewed from the valve body 30 side. It is.
FIG. 9A is an enlarged top view showing the nozzle hole 82b, and FIG. 9B is an enlarged top view showing the nozzle hole 81b. The line PP shown in FIG. 9A is a line that overlaps the nozzle hole axis 85a (see FIG. 9C) of the nozzle hole 82b when the nozzle hole 82b is viewed from above, and as shown in the figure, the nozzle hole 82b. Is inclined toward the imaginary straight line 92 from the valve body 30 side toward the counter valve body 30 side. The same applies to the nozzle holes 84b shown in FIG. The RR line shown in FIG. 9 (B) is a line that overlaps the nozzle hole axis 85b (see FIG. 9 (D)) of the nozzle hole 81b when the nozzle hole 81b is viewed from above, and as shown in the figure, the nozzle hole 81b. Is inclined gently toward the imaginary straight line 91 from the valve body 30 side toward the counter valve body 30 side. The same applies to the nozzle hole 83b shown in FIG. All the other nozzle holes are inclined so that the nozzle axis is away from both the virtual straight line 92 and the virtual straight line 93 toward the counter valve body 30 side.

9C is a cross-sectional view taken along the line PP shown in FIG. 9A, and FIG. 9D is a cross-sectional view taken along the line RR shown in FIG. 9B. As shown in the figure, all the nozzle holes in the second embodiment are so-called straight nozzle holes in which the opening area on the fuel inlet side and the opening area on the fuel outlet side are equal.
The second embodiment of the present invention is substantially the same as the first embodiment in other points.

(Third embodiment)
FIG. 10 is an enlarged view of the nozzle hole plate 151 of the third embodiment as viewed from the valve body 30 side. As shown in the drawing, the nozzle hole plate 151 is equally divided into two regions, a region 153 and a region 154, by a virtual line 152 extending on the surface facing the valve member side, and each region has three nozzle holes. is doing. Specifically, the nozzle hole plate 151 has nozzle holes 153a, 153b, and 153c in the region 153, and has nozzle holes 154a, 154b, and 154c in the region 154. Arrows 155 to 160 in the figure indicate directions in which each nozzle hole ejects a liquid column. As illustrated, the nozzle hole 153b is inclined toward the imaginary straight line 152 from the valve body 30 side toward the counter valve body 30 side. The same applies to the nozzle hole 154b. All the other nozzle holes are inclined toward the side away from the virtual straight line 152 from the valve body 30 side toward the counter valve body 30 side.
The third embodiment of the present invention is substantially the same as the first embodiment in other points.

It is a figure which shows the nozzle hole member by 1st embodiment of this invention, Comprising: (A) is an enlarged view near a nozzle hole, (B) and (C) are schematic diagrams which show a nozzle hole, (D) is (B (E) is a cross-sectional view of the nozzle hole shown in (C). It is sectional drawing which shows the injector by 1st embodiment of this invention. It is sectional drawing to which the principal part of the injector by 1st embodiment of this invention was expanded. It is a figure which shows the nozzle hole member by 1st embodiment of this invention, Comprising: (A) is schematic and (B) is sectional drawing. It is the schematic which looked at the injection hole member by 1st embodiment of this invention from the opposite side to FIG. 4 (A). It is a schematic diagram which shows a mode that the nozzle hole member by 1st embodiment of this invention injects a fuel. (A) is a schematic diagram which shows a mode that the conventional nozzle hole member injects a fuel, (B) is a schematic diagram which shows a mode that the nozzle hole member by 1st embodiment of this invention injects a fuel. It is a figure which shows the nozzle hole member by 2nd embodiment of this invention, Comprising: (A) is a schematic diagram, (B) is an enlarged view of a nozzle hole vicinity. (A) And (B) is a schematic diagram which shows the nozzle hole by 2nd embodiment of this invention, (C) is sectional drawing of the nozzle hole shown to (A), (D) is a nozzle hole shown to (B). It is sectional drawing. It is an enlarged view of the nozzle hole vicinity of the nozzle member by 3rd embodiment of this invention. (A) is a schematic diagram which shows the conventional nozzle hole member, (B) is a schematic diagram which shows a mode that the conventional nozzle hole member injects a fuel.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Injector (fuel injection valve), 30a Inner wall surface, 30 Valve body, 31 Valve seat, 34 Fuel passage, 40 Injection hole plate (injection hole member), 42 Virtual straight line, 43 Virtual straight line, 44a-44c Injection hole, 45a- 45c injection hole, 46a-46c injection hole, 47a-47c injection hole, 49a, 49b injection hole axis, 80 injection hole plate (injection hole member), 81a-81c injection hole, 82a-82c injection hole, 83a-83c injection hole , 84a to 84c injection hole, 85a, 85b injection hole axis, 91 virtual straight line, 92 virtual straight line, 151 injection hole plate (injection hole member), 152 virtual straight line, 153a to 153c injection hole, 154a to 154c injection hole

Claims (4)

A valve body having a valve seat on the inner wall surface forming the fuel passage;
An injection hole member disposed on the downstream side of the fuel flow with respect to the valve seat, and forming a plurality of injection holes for injecting fuel flowing through the fuel passage;
A valve member that shuts off fuel injection from the nozzle hole by sitting on the valve seat and allows fuel injection from the nozzle hole by separating from the valve seat;
The injection hole member have a plurality of nozzle holes to a virtual straight line in each area to be equally divided in two or more virtual straight line passing through the center axis of the valve body on a surface facing the valve member side The plurality of nozzle holes includes an outer nozzle hole that is disposed relatively outside in the radial direction and an inner nozzle hole that is disposed relatively inside, and the outer nozzle hole straddles the virtual straight line. In order to allow fuel to be injected, the nozzle hole axis is inclined so as to be separated from any virtual line as it goes from the fuel inlet side to the fuel outlet side, while the inner nozzle hole straddles the virtual line. A fuel injection valve characterized in that an injection hole axis is inclined so as to approach one of imaginary straight lines from the fuel inlet side toward the fuel outlet side so that fuel can be injected.   The inner injection hole has an injection hole axis line that extends from the fuel inlet side to the fuel outlet side with respect to a virtual straight line that is different from the virtual straight line on the side where the injection hole axial line of another inner injection hole in the adjacent region is inclined. The fuel injection valve according to claim 1, wherein the fuel injection valve is inclined so as to be close to each other.   A valve body having a valve seat on the inner wall surface forming the fuel passage;
  An injection hole member disposed on the downstream side of the fuel flow with respect to the valve seat, and forming a plurality of injection holes for injecting fuel flowing through the fuel passage;
  A valve member that shuts off fuel injection from the nozzle hole by sitting on the valve seat and allows fuel injection from the nozzle hole by separating from the valve seat;
  The injection hole member has a plurality of injection holes in two regions which are virtual straight lines on the surface facing the valve member side and are equally divided by one virtual straight line passing through the central axis of the valve body. The plurality of nozzle holes are composed of an outer nozzle hole that is disposed relatively outside in the radial direction and an inner nozzle hole that is disposed relatively inside, and the outer nozzle hole does not straddle the virtual straight line. In order to be able to inject fuel, the nozzle hole axis is inclined so as to be separated from the virtual straight line from the fuel inlet side toward the fuel outlet side, and the inner nozzle hole can inject fuel across the virtual straight line. Therefore, the fuel injection valve is characterized in that the injection hole axis is inclined so as to approach the virtual straight line from the fuel inlet side toward the fuel outlet side.   An inner injection hole included in one of the two regions is inclined so as to approach one portion of an imaginary straight line extending in one direction from the central axis of the valve body, and an inner injection hole included in the other region. 4. The fuel injection valve according to claim 3, wherein the hole is inclined so as to approach the other portion of an imaginary straight line extending in the other direction opposite to the one direction from the central axis of the valve body.

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