JPH02163460A - Solenoid operated fuel injection valve - Google Patents

Abstract

PURPOSE:To check any drop in an injection quantity of fuel by feeding a clearance between a fuel injection valve and a housing with fuel, while installing a fuel controlling part, controlling the injection quantity of fuel being sprayed out of a nozzle, in a fuel supply passage proximate to the clearance. CONSTITUTION:When current-energization in a magnet coil 26 of a solenoid actuator 9 is stopped by work of an electronic control circuit, a valve body 8 is situated in a close position by dint of energizing force of a return spring 27, stopping a supply of fuel to an intake pipe. At this time, fuel is constituted so as to flow into a ring clearance 41 at all times, and thereby a member forming a fuel supply passage 44 at the more upstream than the vicinity of a fuel controlling part 20 is forcedly cooled by fuel flowing in the clearance 41. With this constitution, even if it receives the heat directly or indirectly during engine driving, fuel in the passage 44 at the more upstream than the vicinity of the controlling part 20 is thus cooled. In consequence, such a possibility that air bubbles might be generated by heat in the fuel in the passage 44 at the more upstream than the controlling part 20 is thus checked, so that any drop in a fuel injection quantity is suppressed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electromagnetic fuel injection valve that supplies fuel to an internal combustion engine.

[Prior Art] The fuel injection side of a fuel injection valve includes a portion that comes into contact with an intake manifold or a cylinder head.Furthermore, a fuel injection valve is usually mounted in an engine room that houses an internal combustion engine. The temperature inside the engine room tends to rise due to the recent increase in the output of internal combustion engines, the reduction in size of the engine room due to the miniaturization of various parts, and the improved sealing properties of various parts of the engine room. Therefore, the fuel injection valve is directly heated by the heat of the internal combustion engine from the fuel injection side, and is also indirectly heated by the heat in the engine room.

When a fuel injection valve is heated, the fuel supplied inside is also heated, promoting the vaporization of the fuel.In other words, when a fuel injection valve is heated, bubbles are created in the fuel supply passage that guides fuel to the injection port. If bubbles occur in the fuel supply passage, the viscosity of the fuel changes due to temperature changes, and the amount of fuel injected from the injection port changes during fuel injection. In other words, the problem was that the performance of the internal combustion engine deteriorated.

Therefore, as a means to solve this problem, JP-A-60
A technique disclosed in Japanese Patent No.-101269 is known.

This technology covers the outer periphery of the electromagnetic actuator (yoke) and nozzle (valve case) with a housing that maintains a certain interval, and then allows fuel to flow in and out of the housing. The fuel was supplied into the nozzle through a fuel passage provided on the side of the nozzle.

This technique cools the outer periphery of the yoke and nozzle of the electromagnetic actuator by the fuel flowing between the yoke and the inner periphery of the housing, thereby suppressing the generation of bubbles in the fuel supply passage.

[Problem to be solved by the invention] However, the fuel injection amount according to the prior art shown above is
It is determined by the throttle opening of the injection port formed as a fuel adjustment part and the pressure difference between the pressure of the fuel supplied upstream of the injection port (with respect to the direction of fuel flow) and the pressure on the fuel injection side. In this way, the injection port, which is largely involved in regulating the amount of fuel injected, is attached to parts that are heated during operation of the internal combustion engine, such as the cylinder head and intake manifold of the internal combustion engine.

As a result, even if the conventional technology allows fuel to flow into the housing and forcibly cools the yoke and the outer periphery of the nozzle of the electromagnetic actuator, the injection port that adjusts the amount of fuel injection is not cooled and is heated by the internal combustion engine. The state will be as follows.

In other words, even with conventional technology, fuel injection IL
The fuel adjustment section that performs the adjustment is heated. As a result, the fuel adjustment section is heated and bubbles are generated inside, causing fuel to be injected! 1'4I1. It had the problem of lowering the temperature and resulting in a C.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an electromagnetic fuel injection valve that can cool a fuel adjustment section and suppress a decrease in the amount of fuel injected.

A fuel injection valve having an electromagnetic actuator that drives the valve body, a gap through which fuel can pass formed at least in part around the fuel injection valve, and an inlet for supplying fuel to the gap. and a housing provided with an outlet for draining the fuel in the gap, and the fuel injection valve is configured to transfer the fuel supplied to the gap between the valve case and the valve body, and A technology comprising a fuel supply passage that supplies fuel to a flow from the contact part, and a fuel adjustment part that adjusts the injection amount of fuel injected from the injection port in the fuel supply passage near the gap. Adopt practical means.

[Means for Solving the Problems] In order to achieve the above object, the electromagnetic fuel injection valve of the present invention includes an injection port for injecting fuel, and a valve case including a valve seat connected to the injection port. , a valve body including a contact portion that can come into contact with the valve seat, and which stops fuel from being injected from the injection port by contacting the contact portion with the valve seat, and [Function 1 Fuel injection] Fuel is supplied from the inlet to the gap E between the valve and the housing. And the fuel supplied to the gap is
It flows out from the outlet. That is, fuel circulates in the gap between the fuel injection valve and the housing. When fuel circulates through the gap, the heat around the gap is taken away by the fuel and the area is cooled.

The fuel adjustment section is provided near the gap. Note that the vicinity is defined as an area where the internal combustion engine is operating and receiving heat from the internal combustion engine, and the heat is taken away by the fuel circulating through the gap and the area is cooled.

As a result, the fuel regulator is cooled by the fuel flowing through the gap even when the internal combustion engine is in operation.

Preferably, a member forming a fuel supply passage upstream of the fuel adjustment section (with respect to the direction in which the fuel flows) is provided in a portion that is cooled by the fuel flowing through the gap, so that the soil in the fuel adjustment section and the flowing fuel It is better to cool the fuel in the supply passage.

[Effect of the invention] The present invention has the following effects.

Even when the internal combustion engine is in operation, the fuel regulator is cooled by the fuel flowing through the gap.

As a result, even if the fuel injector receives heat from the internal combustion engine,
The fuel adjustment section is cooled and the generation of bubbles in the fuel adjustment section is suppressed.

That is, during fuel injection, it is possible to suppress a decrease in the fuel injection amount due to air bubbles being included in the fuel passing through the fuel adjustment section.

[Example] Next, an electromagnetic fuel injection valve of the present invention will be described based on an example shown in the drawings.

1 and 2 show a first embodiment of the present invention. FIG. 1 shows a cross section of an electromagnetic fuel injection valve, and FIG. 2 shows an outline of a fuel supply system for the fuel injection valve. .

The fuel injection valve 1 is connected to a gasoline engine (
It supplies gasoline, which is fuel, to the combustion chamber of a combustion engine (not shown), and is assembled near the combustion chamber of an intake manifold (intake pipe) that supplies air for combustion. Therefore, the number of fuel injection valves 1 corresponding to the number of cylinders of the engine is installed in the intake pipe.

The fuel supply system also includes a fuel pipe 3 that circulates fuel from the fuel tank 2 through the fuel injection valve 1 and back to the fuel tank 2. An electric pump 4, a fuel filter 5, a number of fuel injection valves 1 corresponding to the number of cylinders, and a pressure control valve 6 are installed in this fuel pipe 3 in this order from upstream through which fuel flows.

The pressure regulating valve 6 maintains a constant pressure difference between the fuel pressure in the fuel pipe 3 between the electromagnetic pump and the pressure regulating valve 6 with respect to the pressure in the intake pipe.

The fuel injection valve 1 is roughly divided into a valve case 7, a valve body 8, and an electromagnetic actuator 9.

The valve case 7 has a substantially cylindrical shape, and is provided with an injection port 10 at one end for injecting the adjusted fuel into the intake pipe. Further, a cylindrical guide hole 11 is formed inside the valve case 7. Injection port 10 and guide hole 11 of valve case 7
A valve seat 12 is formed between the injection port 1o and the guide hole 11 and has a conical surface. An elongated needle-shaped valve body 8 is housed inside the guide hole 11 . Note that an injection port cover 4-13 is attached to the injection port 10 side of the valve case 7. This injection port cover 13 is
It serves to guide the fuel injected from the injection port 1o into the intake pipe.

A bottle 14 extending inside the injection port 10 is integrally provided at one end of the valve body 8 . The tip of this pin 14 is provided in an umbrella shape and promotes atomization of the fuel injected from the injection port 10. Furthermore, one contact portion 15 and one contact portion 16 are formed near both ends of the valve body 8 in the axial direction. These two sliding contact portions 15.16 are annular projections, and the sliding contact portions 15.16 allow the valve body 8 to move into the guide hole 11.
It is slidably supported within. In addition, two sliding contact parts 15.
16 includes a plurality of (for example, four) flat portions on the outer periphery, and fuel flows smoothly through the gap formed between the flat portions and the guide hole 11.

Further, a contact portion 11 that contacts the valve seat 12 of the valve case 7 is formed on the pin 14 side of the valve body 8 .

Note that, after the valve body 8 is assembled into the fuel injection valve 1, the abutting portion 11 abuts against the valve seat 12 and closes the injection port 10, and the abutting portion 11 is positioned a predetermined distance from the valve seat 12. It is made movable relative to the valve case 7 between the open position where the injection port 10 is opened when the injection port 10 is separated.

When the valve body 8 is in the open position, a first fuel adjustment part 18 is formed in an annular gap formed between the valve seat 12 and the contact part 17 to adjust the amount of fuel to be ejected. .

Furthermore, between the two sliding contact parts 15 and 16 upstream of the contact part 17 of the valve body 8, an annular overhanging part 19 is provided.
is formed. At least when the valve body 8 is in the open position, the projecting portion 19 is provided with a second fuel that adjusts the amount of fuel to be ejected into an annular gap formed between the valve body 8 and the inner wall of the guide hole 11 of the valve case 7. An adjustment section 20 is formed.

The second fuel adjustment section 20 is set to have a pressure loss of 5% to 70% of the total pressure loss, and the first fuel adjustment section 18 has the remaining pressure loss. There is.

The gap formed between the injection port 10 and the bottle 14 is provided relatively large, and the pressure loss due to the gap formed between the injection port 10 and the bottle 14 is desirably suppressed to 5x or less overall. shall be provided.

The end of the valve body 8 on the side different from the bottle 14 is inserted into a hole in a ring-shaped stopper 21. This stopper 2
1 is fixed between a cylindrical casing 22 surrounding the electromagnetic actuator 9 and an end of the valve case 7 . On the other hand, the valve body 8 at the partition of the stopper 21 is formed with a flange 2) projecting in an annular shape. When the valve body 8 is pulled up by the electromagnetic actuator 9, the flange 2) hits the stopper 21, and the valve body 8
The opening position is determined. Note that the end of the valve body 8 on the side different from the bottle 14 passes through the stopper 21 and extends into the casing 22 .

The casing 22 houses an electromagnetic actuator 9 that drives the valve body 8 between an open position and a closed position. !
The magnetic actuator 9 is roughly composed of an armature 24, a stator 25, and an electromagnetic coil 26.

The armature 24 is made of a magnetic material, and is connected to the end of the valve body 8 on the side different from the bottle 14, and is movable together with the valve body 8 in the axial direction of the valve body 8. The armadure 24 is always on the valve body 8 side (first side) by the return spring 27.
(lower side of the figure).

The stator 25 is also a cylindrical magnetic body, and is arranged coaxially with the armature 24 and on a different side of the armature 24 from the valve body 8 (upper side in FIG. 1). Note that an adjustment screw 28 for adjusting the urging force of the return spring 27 is screwed into the inside of the stator 25. The stator 25 includes a flange 29 extending in an annular shape at an intermediate position.
There is C. This flange 29 is caulked to the end of the casing 22, and the stator 25 is fixed to the casing 22.

The electromagnetic coil 26 is wound around a bobbin 30 and is mounted inside the casing 22 and on the outer periphery of the stator 25. O-rings 31 are attached to both ends of the electromagnetic coil 26.
．． 32 is installed to prevent fuel from entering the electromagnetic coil 26. The electromagnetic coil 26 is connected to a terminal (not shown). This terminal is connected by a connector (not shown) provided at the end of the fuel injector 1.
[Supported. The terminal is connected to an electronic control circuit 35 including a microcomputer. The electronic control circuit 35 controls the energization of the electromagnetic coil 2G of each fuel injection valve 1 according to the operating state of the engine. The electromagnetic coil 26 generates a magnetic force when energized by the electronic control circuit 35, and attracts the armature 24 in one direction in FIG. 1 against the biasing force of the return spring 27.

The connector is formed of molded resin 36 provided at the end of the casing 22. A ring-shaped collar 37 is formed in this molded resin 36. This collar 31 is sandwiched between a housing 38 that houses the fuel injection valve 1 and a lid 39. Note that when the collar 31 is sandwiched between the housing 38 and the lid 39, and the housing 38 and the lid 39 are fixed together by the screws 40, the fuel injection valve 1 is fixed within the housing 38.

Outer circumference of valve case 7 and casing 22 <Fuel injection valve 1
An annular gap 41 is formed between the housing 38 and the outer periphery of the housing 38 . The housing 38 has an inlet (not shown) for guiding fuel into an annular gap 41 formed between the fuel injection valve 1 and the housing 38, and an inlet for flowing out the fuel introduced into the gap 41. An outlet (not shown) is provided. The fuel introduced into the gap 41 from the inlet flows through the annular gap 41 and flows out from the outlet. Note that O-rings 42 and 43 are provided between the casing 22 and the housing 38 on the outer periphery of the electromagnetic coil 26 and between the valve case 7 and the housing 38, respectively, so that the fuel supplied to the annular gap 41 is , are provided to prevent leakage to the outside of the housing 38.

Next, we will explain the fuel supply passage 44 that supplies the fuel supplied to the gap 41 between the valve case 7 and the valve body 8 upstream of the contact portion 17 (with respect to the flow of fuel). The example fuel supply passage 44 includes a feed hole 45 provided in the valve case 7 and a purge hole 4G provided in the casing 22. The feed hole 45 is connected to the valve body 8
They guide the fuel supplied to the gap 41 into the guide hole 11 between the overhanging part 19 and the sliding contact part 16 on the electromagnetic actuator 9 side, and a plurality of guide holes are provided radially around the valve case 7. . A plurality of purge holes 46 are provided radially around the casing 22 to supply the fuel supplied to the gap 41 between the armature 24 and the casing 22. The armature 24 and the casing 22 communicate with the second fuel adjustment t1520 via the stopper 21 and the valve body 8. In addition, the feed hole 45 and the purge hole 46 each have a gap 1'f14.
A mesh filter 41 is attached to the opening of the fuel supply passage 44 to prevent dust contained in the fuel from flowing into the fuel supply passage 44.

Note that the housing 38 is provided so as to house the second fuel adjustment section 20, and the housing 38 is provided so as to house the second fuel adjustment section 20.
The fuel is provided so that fuel flows near the periphery of the valve case 7 that constitutes the valve case 7. As a result, even when the engine is operating and the fuel injection valve 1 is receiving heat from the engine, the heat in the second fuel adjustment section 20 is taken away by the fuel circulating through the gap 41. Furthermore, the housing 38 is provided so that an annular gap 41 is formed on the outer periphery of a member that forms a fuel supply passage 44 upstream (with respect to the fuel flow direction) of the second fuel adjustment section 20. . As a result, the fuel in the fuel supply passage 44 above the vicinity of the second fuel adjustment section 20 is forcibly cooled by the fuel circulating through the gap 41.

Next, the operation of the fuel injection valve 1 shown above will be briefly explained.

When the engine is operated, the electric pump 4 operates, and the pressure control valve 6 causes the fuel pressure in the fuel pipe 3 between the electric pump 4 and the pressure control valve 6 to be adjusted relative to the pressure in the intake pipe. , maintained at a constant pressure difference. In other words, the pressure of the fuel in the fuel supply passage 44 upstream (with respect to the fuel flow direction) of the second fuel regulating section 20 is also adjusted to the pressure regulated by the pressure regulating valve 6 .

(a) When the electromagnetic coil 26 of the electromagnetic actuator 9 is de-energized by the action of the electronic control circuit 35.

The valve body 8 is located in the open position by the biasing force of the return spring 27. In other words, the contact portion 17 of the valve body 8 contacts the valve seat 12 of the valve case 7, stopping the supply of fuel to the intake pipe.

At this time, fuel is constantly flowing through the annular gap 41. Therefore, the members forming the fuel supply passage 44 upstream (with respect to the fuel flow) from the vicinity of the second fuel adjustment section 20 are
C is forcibly cooled by the fuel flowing through the gap 41.

As a result, even if the engine receives heat directly or indirectly (such as by receiving heat in the engine room) during engine operation, the fuel in the fuel supply passage 44 upstream from the vicinity of the second fuel adjustment section 20 remains unchanged. , cooled. As a result, the fuel supply passage 44 upstream from the vicinity of the second fuel adjustment section 20
This can prevent bubbles from forming in the fuel inside due to heat.

(b) When the electromagnetic coil 26 of the electromagnetic actuator 9 is energized by the function of the electronic control circuit 35, when the electromagnetic coil 26 is energized, the armature 24 is moved against the biasing force of the return spring 27 to the stator 25. The valve body 8 is moved until the flange 2) of the valve body 8 comes into contact with the stopper 21. Then, the space between the valve seat 12 and the contact portion 17 is opened, and the first fuel adjustment portion 18 is formed. Then, the fuel supplied upstream of the second fuel regulating section 20 in a regulated state is transferred to the second fuel regulating section 20 and the first fuel regulating section 1.
8 and is injected into the intake pipe through between the injection port 10 and the bottle 14.

When fuel injection is stopped, the second
In the fuel supply passage 44 near the fuel adjustment section 20, the generation of bubbles is suppressed by heat being taken away by the fuel flowing through the gap 41, so that when fuel is injected, the second fuel adjustment section There is little possibility that the fuel passing through 20 will contain air bubbles.

As a result, it is possible to suppress a decrease in the fuel injection amount due to air bubbles being included in the fuel passing through the second fuel adjustment section 20 during fuel injection.

FIG. 3 shows a second embodiment of the present invention.

In this embodiment, the housing 38 is extended, and the injection port 10 is provided around the second fuel adjustment section 20 and from the second fuel adjustment section 20.
The fuel f:1 in the gap 41 is guided around the side valve gauge 7.

The injection port cover 13 is inserted into the intake pipe of the engine. For this reason, the fuel injection valve 1 has an injection port 10 in the ζ valve case 7.
Heat is mainly received from the sides.

However, by configuring the present embodiment as described above, while heat is being transmitted through the valve case 7, the heat transmitted through the valve case 7 is removed by the fuel flowing through the gap 41, and the valve case 7 is cooled. That is, the heat received by the tip of the valve case 7 from the intake pipe is cooled by the valve case 7, and is difficult to be transmitted to the vicinity of the second fuel adjustment section 20.

Further, the second fuel adjustment section 20 of this embodiment is disposed completely inside the annular gap 41. Therefore, in the second fuel adjustment section 20, the cooling effect of the fuel flowing through the annular gap 41 is further improved compared to the above embodiment.

In other words, compared to the first embodiment, generation of air bubbles in the second fuel adjustment section 20 is further suppressed, and the fuel injection amount is reduced due to the presence of air bubbles in the second fuel adjustment section 20 during fuel injection. can be suppressed.

A third embodiment of the present invention is shown in FIGS. 4 and 5.

As shown in FIG. 4, the annular projecting portion 19 formed on the valve body 8 of this embodiment has two or more plane portions 48 formed on its outer periphery. The second fuel adjustment section 20 is formed between the valve case 7 and one overhang section having two or more flat surfaces 48 .

In this way, by forming two or more plane parts 48 (four in the embodiment) around the overhang part 19, a half-moon-shaped gap 49 (see FIG. 5) is formed between the projecting part 19 and the valve case 7. be done. Since this half-moon-shaped gap 49 is larger than the gap of the second fuel adjustment section 20 in the above embodiment, even if dust flows into the second fuel adjustment section 20 and the temperature rises, the half-moon-shaped gap 49
9 to the first fuel adjustment section 18flI! It can easily flow to I. As a result, it is possible to suppress a decrease in the fuel injection amount due to accumulation of dust or the like in the second fuel adjustment section 20.

Note that, in general, the first fuel adjustment section 18 has a larger aperture opening than the second fuel adjustment section 20.

The probability that dust or the like will accumulate in the first fuel adjustment section 18 is low.

In addition, by making 1,000 1 part 48 have two or more pages,
It is possible to prevent the valve body 8 from becoming eccentric within the valve case 7 due to pressure applied to the flat portion 48 . In other words, the pressure applied to each flat part 48 is canceled out by the pressure applied to the other flat parts 48, thereby preventing eccentricity and preventing the valve body 8 and the valve case 7 from being bent to one side.

Note that the reference numeral 47a in the figure is a support member for the filter 41.

FIG. 6 shows a fourth embodiment of the present invention.

In this embodiment, each of the feed hole 45 and the purge pole 46 is made into one, and each of the feed hole 45 and the purge hole 46 is made into an aperture.

That is, both the feed hole 45 and the purge pole 46 constitute the second fuel adjustment section 20.

The aperture of the feed hole 45 and barge pole 46 is
Adjustment can be easily made before the mesh filter 47 is installed, or even after the fuel injection valve 1 is assembled by removing the mesh filter 47. Therefore, the second fuel adjustment section 20 of the present embodiment can easily adjust the second fuel adjustment section 20 according to the performance after the fuel injection valve 1 is assembled and the fuel injection valve 1 is operated. can.

In this embodiment, one foot hole 45 and one barge pole 46 are provided, but a plurality of one or both may be provided, and the aperture opening may be adjusted according to the numerical aperture.

FIG. 7 shows a fifth embodiment of the present invention.

In this embodiment, the barge hole (see the first embodiment) is closed, leaving only the feed hole 45, and this foot hole 45 is used as a diaphragm. In other words, the feed hole 45 constitutes the second fuel adjustment section 20.

FIG. 8 shows a sixth embodiment of the present invention.

In this embodiment, the feed hole (see the first embodiment) is closed and only the barge hole 46 is used.
The aperture is 6. In other words, barge hole 46
constitutes the second fuel adjustment section 20.

FIG. 9 shows a seventh embodiment of the present invention.

The fuel supply passage 44 of this embodiment has a feed hole (first
(see Examples) and remove the injection port 1 from the barge pole 46.
It directs fuel to 0. Specifically, the fuel supplied to the outer periphery of the electromagnetic coil 26 from the barge hole 46 is guided to the adjustment screw 28 in the stator 25, and is passed through the fuel passage 50 formed in the adjustment screw 28 to the armature 24 and the casing 22. between, between the stopper 21 and the valve body 8, between the valve body 8
and the valve case 7 to the upstream side of the contact portion 11.

The second fuel adjustment section 20 of this embodiment is an orifice provided at the center of a cap-shaped member 51.
This cap-like member 51 is assembled within the fuel passage 50 within the adjustment screw 28 so that its outer periphery is liquid-tight.

Note that the bobbin 30 of the electromagnetic coil 26 has a seal portion 52.5 that prevents the fuel introduced between the armature 24 and the gauging 22 from communicating with the barge hole 46.
3 is provided. In addition, the adjustment screw 28 and the stator 2
O-rings 54 and 55 are arranged between the
Stator 2 from barge hole 46 via stator 25
5 and the adjustment screw 28, the fuel is guided between the fuel passage 5 and the adjusting screw 28.
This prevents leakage from values other than 0.

[Brief explanation of the drawing]

1 and 2 show a first embodiment of the present invention. FIG. 1 is a sectional view of an electromagnetic fuel injection valve, and FIG. 2 is a schematic diagram IA of a fuel supply system for the fuel injection valve. FIG. 3 is a sectional view of an iTi magnetic fuel injection valve showing a second embodiment of the present invention. 4 and 5 show a third embodiment of the present invention, FIG. 4 is a sectional view of the main part of the fuel injection valve, and FIG.
FIG. 2 is a cross-sectional view taken along line II in the figure. FIG. 6 is a sectional view of an electromagnetic fuel injection valve showing a fourth embodiment of the present invention. FIG. 7 is a sectional view of an electromagnetic fuel injection valve showing a fifth embodiment of the present invention. FIG. 8 is a sectional view of an electromagnetic fuel injection valve showing a sixth embodiment of the present invention. FIG. 9 is a sectional view of an electromagnetic twisted T1 injection valve showing a seventh embodiment of the present invention. In the figure 1... Fuel injection valve 7... Valve case 8... Valve body 9... Electromagnetic actuator 10... Injection port 17... Contact part 38... Housing 44... Fuel supply passage

Claims (1)

[Claims] 1) (a) (a-1) A valve case including an injection port for injecting fuel and a valve seat connected to the injection port, (a-2) Abutting on the valve seat. (a-3) an electromagnetic actuator that drives the valve body; and (a-3) an electromagnetic actuator that drives the valve body. (b) forming a gap through which fuel can pass through at least a portion of the outer periphery of the fuel injection valve; (b-1) an inlet for supplying fuel to this gap;
b-2) a housing provided with an outlet for draining the fuel from the gap, and (c) (c-1) the fuel injection valve directs the fuel supplied to the gap to the valve case. and the valve body and upstream from the contact portion, and (c-2) the fuel supply passage near the gap includes fuel injected from the injection port. An electromagnetic fuel injection valve characterized by being provided with a fuel adjustment section that adjusts the injection amount of the fuel.