JP2000164424A - Electromagnetic valve and method for adjusting responding speed thereof and its device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electromagnetic valve capable of easily adjusting responsiveness, and suppressing variations of responsiveness, and a method and device for adjusting the responding speed. SOLUTION: A yoke 76 integrated into an electromagnetic spill valve is provided with a variable site 79 having two slits 77 and 78 so that the magnetic resistance can be changed only by bending this variable site 79. After the yoke 76 and a magnetic circuit constituted of a core 90 and an armature 92 are assembled, the bending level of the variable site 79 is adjusted so that the magnetic resistance of the yoke 76 can be changed, and the responsiveness of the electronic spill value can be aligned within specification. Therefore, the variations of the responsiveness of the electromagnetic spill value can be suppressed only by adjusting the bending level of the variable elite 79 without making strict the tolerance of each part, or repeating selection or assembly by arranging plural parts. Thus, the productivity of the electromagnetic spill valve can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention adjusts the excitation state of a magnetic circuit formed by a yoke, a core, and an armature by the magnetomotive force of an electromagnetic coil, thereby adjusting the relative distance between the core and the armature and interlocking with the armature. The present invention relates to an electromagnetic valve that adjusts a valve opening degree by a valve body, a response speed adjusting method of the electromagnetic valve, and a response speed adjusting device.

[0002]

2. Description of the Related Art There has been known an electromagnetic spill valve for a high-pressure fuel pump which adjusts the amount of fuel pumped by causing fuel in a pump chamber of a high-pressure fuel pump to overflow by opening the valve (Japanese Patent Laid-Open No. 10-1998).
No. 153157).

Such an electromagnetic spill valve is required to have high responsiveness in order to control the overflow of the fuel from the high-pressure fuel pump with high accuracy. Further, if the electromagnetic spill valve produced has a variation in response due to such high response, the variation may greatly affect the overflow control and adversely affect the control accuracy. For this reason, it is necessary to suppress the variation in the responsiveness of the manufactured electromagnetic spill valve.

[0004]

As a method of reducing the variation, for example, there is a method of reducing the tolerance of the component dimensions to suppress the assembly variation. However, this method requires that the dimensional accuracy of each part of the electromagnetic spill valve be extremely high, which reduces the productivity and yield of each part, and eventually reduces the productivity of the electromagnetic spill valve itself. Problems arise.

At the time of manufacture, a spacer having an appropriate thickness is selected from spacers having various thicknesses, and an air gap between a core and an armature present in a magnetic circuit of an electromagnetic spill valve is adjusted to obtain an electromagnetic gap. There is also a method of making the response of each spill valve uniform. However, this method also requires the provision of other types of spacers and increases the number of parts. Further, the troublesome operation of measuring the responsiveness of the electromagnetic spill valve and selecting and assembling an appropriate spacer is required repeatedly, which causes a problem that productivity is reduced.

SUMMARY OF THE INVENTION The present invention provides a solenoid valve, a method for adjusting the response speed of a solenoid valve, and a response speed of the solenoid valve, which can easily produce a product with little variation in the response because the response is easy to adjust. It is intended to provide an adjusting device.

[0007]

According to a first aspect of the present invention, there is provided an electromagnetic valve, wherein the excitation state of a magnetic circuit formed by a yoke, a core, and an armature is adjusted by a magnetomotive force of an electromagnetic coil, so that the core and the armature can be connected to each other. A solenoid valve that adjusts a relative distance of the valve and adjusts a valve opening degree by a valve body interlocked with the armature, wherein the yoke has a magnetic resistance changing mechanism capable of changing a magnetic resistance. And

[0008] As described above, the yoke has the magnetoresistance changing mechanism capable of changing the magnetoresistance. Therefore, for example, by adjusting the magnetic resistance changing mechanism after assembling the magnetic circuit to change the magnetic resistance of the yoke, the responsiveness of the solenoid valve can be adjusted to a standard value.

Therefore, the responsiveness of the solenoid valve can be made uniform only by adjusting the magnetic resistance changing mechanism, without making the tolerances of each part strict, and without repeating selection and assembly at the time of manufacturing with many parts. Therefore, variation in the responsiveness of the solenoid valve can be suppressed. Thus, the productivity of the solenoid valve can be improved.

According to a second aspect of the present invention, in the solenoid valve according to the first aspect, the yoke is formed by bending a plate-shaped magnetic material into a substantially U-shape. In order to easily adjust the magnetic resistance of the yoke, it is better to use a single plate-shaped magnetic material, and changes in the shape of the yoke and the like at any position of the yoke greatly affect the magnetic resistance. .
For this reason, a yoke formed by forming a plate-shaped magnetic material into a substantially U-shape is preferable as an object for forming a magnetoresistance changing mechanism. Therefore, in addition to the effects of the first aspect, the responsiveness of the solenoid valve can be more effectively adjusted.

According to a third aspect of the present invention, in the solenoid valve according to the first or second aspect, the magnetic resistance changing mechanism increases a sectional area of a portion corresponding to the magnetic circuit portion in the yoke. The deformation mechanism is capable of performing one or both of the deformation processing and the deformation processing for reducing.

As described above, the magnetoresistive change mechanism is capable of performing one or both of the deformation processing for increasing or decreasing the cross-sectional area of the portion corresponding to the magnetic circuit portion in the yoke. It can be realized by configuring as. Increasing the cross-sectional area of the portion constituting the magnetic circuit decreases the magnetic resistance, and conversely, decreasing the cross-sectional area increases the magnetic resistance. By configuring the magnetic resistance changing mechanism as such a deformation mechanism, in addition to the function and effect of claim 1 or 2, it is possible to change the magnetic resistance of the yoke which is still incorporated in the magnetic circuit more easily.

According to a fourth aspect of the present invention, in the solenoid valve according to the third aspect, the deformation mechanism forms a slit in a portion corresponding to the magnetic circuit portion in a direction substantially orthogonal to the direction of the magnetic force lines. Characterized in that:

As described above, the deformation mechanism for increasing or decreasing the cross-sectional area can be realized by forming a slit in a portion corresponding to a magnetic circuit portion in a direction substantially perpendicular to the direction of the line of magnetic force. When the yoke is deformed so that the two surfaces forming the slit are displaced, the cross-sectional area decreases, so that the magnetic resistance can be increased. Conversely, when the yoke is deformed in a direction in which the two surfaces coincide, the cross-sectional area increases. Therefore, the magnetic resistance can be reduced. Therefore,
In addition to the functions and effects of the third aspect, the deformation mechanism can be realized with a simple configuration.

According to a fifth aspect of the present invention, in the solenoid valve according to the fourth aspect, the two slits are formed substantially parallel to an edge of the yoke, so that the two slits are variable between the two slits. It is characterized in that a part is formed.

By providing two slits as described above, a variable portion is formed between the slits. Thus, by bending the variable portion around the base of the variable portion, the variable portion can be raised or returned from the yoke main body. When the variable portion is raised from the yoke main body, the two surfaces of the two slits in a direction substantially orthogonal to the direction of the magnetic force deviate, so that the cross-sectional area of the portion corresponding to the magnetic circuit portion decreases and the magnetic resistance increases. Conversely, if the variable portion is returned to the yoke main body, 2
As the planes coincide, the cross-sectional area increases and the magnetoresistance decreases. Therefore, in addition to the function and effect of the fourth aspect, the magnetic resistance of the yoke while being incorporated in the magnetic circuit can be changed more easily and effectively.

According to a sixth aspect of the present invention, in the solenoid valve according to the fourth aspect, the slit is formed in a substantially U-shape, so that a region surrounded by the slit serves as a variable portion. It is characterized by being formed.

Similarly, by bending the variable portion around the base of the variable portion cut in a substantially U-shape, the variable portion can be raised or returned from the yoke main body. Therefore, the magnetic resistance can be adjusted as in the case of the fifth aspect, and in addition to the function and effect of the fourth aspect, the magnetic resistance of the yoke which is still incorporated in the magnetic circuit can be changed more easily.

According to a seventh aspect of the present invention, in the method for adjusting the response speed of the electromagnetic valve, the excitation state of the magnetic circuit formed by the yoke, the core, and the armature is adjusted by the magnetomotive force of the electromagnetic coil so that the core and the armature can be connected to each other. A method of adjusting a response speed of an electromagnetic valve, which adjusts a relative distance and adjusts a valve opening degree by a valve body interlocked with the armature, wherein changing a magnetic resistance of the yoke incorporated in the magnetic circuit. And the response of the solenoid valve is adjusted.

As described above, the response of the solenoid valve can be adjusted to a standard value only by changing the magnetic resistance of the yoke for the yoke already incorporated in the magnetic circuit. Therefore, the responsiveness of the solenoid valve should be uniform and the variability of the responsiveness of the solenoid valve should be suppressed without having to tighten the tolerances of each part and without having to repeat the selection and assembly at the time of manufacturing with many parts. Can be. Thus, the productivity of the solenoid valve can be improved.

According to an eighth aspect of the present invention, there is provided a method for adjusting a response speed of a solenoid valve, wherein the solenoid valve according to the first or second aspect is used as a response speed adjustment target in addition to the configuration according to the seventh aspect.
The responsiveness of the solenoid valve is adjusted by changing the magnetic resistance of the yoke using the magnetic resistance changing mechanism.

Since the magnetic resistance changing mechanism provided on the yoke can be used in this way, in addition to the function and effect of claim 7, the magnetic resistance of the yoke as it is incorporated in the magnetic circuit can be changed more easily, and the efficiency can be improved. The responsiveness of the solenoid valve can be adjusted effectively.

According to a ninth aspect of the present invention, in the method of adjusting the response speed of the electromagnetic valve, the change of the magnetic resistance of the yoke is performed by deforming a part of the yoke. Features.

As described above, since the magnetic resistance of the yoke can be realized by the deformation of the yoke, the magnetic resistance of the yoke which is incorporated in the magnetic circuit can be easily changed in addition to the effect of the seventh aspect. The responsiveness of the solenoid valve can be adjusted efficiently.

According to a tenth aspect of the present invention, there is provided a method for adjusting a response speed of a solenoid valve, wherein the solenoid valve according to any one of the third to sixth aspects is used as a response speed adjustment target, and A part of the yoke is deformed using a mechanism to adjust the responsiveness of the solenoid valve.

Since the deformation mechanism provided on the yoke can be used in this way, in addition to the effect of the ninth aspect, the magnetic resistance of the yoke while being incorporated in the magnetic circuit can be changed more easily, and the efficiency can be improved. Thus, the responsiveness of the solenoid valve can be adjusted.

According to a twelfth aspect of the present invention, there is provided a response speed adjusting device for an electromagnetic valve, wherein an excitation state of a magnetic circuit formed by a yoke, a core and an armature is adjusted by a magnetomotive force of an electromagnetic coil, thereby allowing the core and the armature to be connected. A response speed adjusting device for an electromagnetic valve, which adjusts a relative distance and adjusts a valve opening degree by a valve body interlocked with the armature, wherein a magnetic resistance of the yoke in a state incorporated in the magnetic circuit is changed. Resistance changing means, responsiveness of the solenoid valve or responsiveness measuring means for measuring a physical quantity corresponding to the responsiveness, and until the measurement result by the responsiveness measuring means reaches a specified value, the magnetic resistance changing means, Response speed adjusting means for performing a process of changing the magnetic resistance of the yoke.

As described above, the response speed adjusting means performs the processing of changing the magnetic resistance of the yoke by the magnetic resistance changing means until the measurement result by the response measuring means reaches a specified value. Therefore, the responsiveness of the solenoid valve assembled as a magnetic circuit can be automatically adjusted to the standard value.

Further, the response of the solenoid valve can be adjusted to a standard value only by changing the magnetic resistance of the yoke for the yoke already incorporated in the magnetic circuit. Therefore, without having to tighten the tolerances of each part, and without having to repeat the selection and assembly at the time of manufacturing with many parts aligned
Variations can be suppressed by making the responsiveness of the solenoid valves uniform.

Further, since the response variation is automatically suppressed, extremely high productivity of the solenoid valve can be achieved. The response speed adjusting device for an electromagnetic valve according to claim 12, wherein the excitation state of the magnetic circuit formed by the yoke, the core, and the armature is adjusted by the magnetomotive force of the electromagnetic coil, so that the relative distance between the core and the armature is adjusted. An electromagnetic valve response speed adjusting device that adjusts and adjusts a valve opening degree by a valve body interlocked with the armature, wherein a magnetic resistance changing unit that changes a magnetic resistance of the yoke incorporated in the magnetic circuit. And responsiveness measuring means for measuring the responsiveness of the solenoid valve or a physical quantity corresponding to the responsiveness, and the degree of change of the magnetic resistance of the yoke by the magnetic resistance changing means and the measurement result by the responsiveness measuring means. By comparison, the degree of change in the magnetic resistance of the yoke necessary for the measurement result to reach a specified value is estimated, and based on the estimation, the magnetic resistance changing means Ri is characterized in that a response speed estimation adjusting means for performing a process of changing the magnetic resistance of the yoke.

The response speed estimating and adjusting means compares the degree of change of the magnetic resistance of the yoke by the magnetic resistance changing means with the measurement result by the response measuring means, and determines the magnetic field of the yoke necessary for the measurement result to reach the specified value. Estimate the degree of change in resistance. Then, based on this estimation, a process of changing the magnetic resistance of the yoke by the magnetic resistance changing means is performed.

That is, the response speed estimating and adjusting means changes the magnetic resistance of the yoke by the magnetic resistance changing means until the measurement result by the response measuring means reaches a specified value. Do not repeat. The response speed estimation adjusting means only drives the magnetoresistance changing means and the responsiveness measuring means once or a small number of times.

From this driving, the response speed estimation adjusting means
The degree of change in the magnetic resistance of the yoke is compared with the measurement result of the responsiveness, and data on how much the responsiveness or the physical quantity corresponding to the responsiveness has changed with respect to the amount of change in the magnetic resistance is obtained. From this data, the degree of change in the magnetic resistance of the yoke to reach the intended response of the solenoid valve is estimated.

By using the degree of change of the magnetic resistance estimated in this manner, the response of the solenoid valve can be quickly increased without repeating the drive of the response measuring means and the magnetic resistance changing means. Responsiveness can be achieved.

Therefore, in addition to the same functions and effects as in the eleventh aspect, the responsiveness of the solenoid valve can be quickly adjusted, and the productivity can be further improved. A response speed adjusting device for an electromagnetic valve according to claim 13 uses the electromagnetic valve according to claim 1 or 2 as an object of response speed adjustment with respect to the configuration according to claim 11 or 12, and the magnetic resistance changing means includes: The magnetic resistance of the yoke is changed using the magnetic resistance changing mechanism.

As described above, since the magnetic resistance changing mechanism provided on the yoke can be used, the magnetic resistance of the yoke that has been incorporated in the magnetic circuit can be changed more easily in addition to the function and effect of claim 11 or 12. Thus, the responsiveness of the solenoid valve can be adjusted efficiently.

According to a fourteenth aspect of the present invention, in the electromagnetic valve response speed adjusting device according to the eleventh or twelfth aspect, the magnetic resistance changing means deforms a part of the yoke to change the magnetic force of the yoke. It is characterized in that the resistance is changed.

As described above, since the magnetic resistance of the yoke can be realized by the deformation of the yoke, the magnetic resistance of the yoke which is easily incorporated in the magnetic circuit is changed in addition to the effect of the eleventh or twelfth aspect. Thus, the responsiveness of the solenoid valve can be adjusted efficiently.

According to a fifteenth aspect of the present invention, there is provided a response speed adjusting device for an electromagnetic valve, wherein the electromagnetic valve according to any one of the third to sixth aspects is used as a response speed adjustment target, and The resistance changing means deforms a part of the yoke using the deformation mechanism.

Since the deformation mechanism provided on the yoke can be used in this way, in addition to the function and effect of claim 14,
It is possible to change the magnetic resistance of the yoke that has been incorporated in the magnetic circuit more easily, and it is possible to more efficiently adjust the responsiveness of the solenoid valve.

According to a sixteenth aspect of the present invention, in the electromagnetic valve response speed adjusting device according to any one of the eleventh to fifteenth aspects, the responsiveness measuring means measures a moving state of the armature or the valve body. It is characterized by doing.

Specifically, the response of the solenoid valve or a physical quantity corresponding to the response can be measured by measuring the moving state of the armature or the valve body.
~ 15 effects can be obtained.

According to a seventeenth aspect of the present invention, there is provided a response speed adjusting device for an electromagnetic valve according to any one of the eleventh to fifteenth aspects, wherein the electromagnetic valve is attached to a fluid passage and the response speed is controlled. The characteristic measuring means measures a fluid passage state of the solenoid valve.

Specifically, by measuring the fluid passage state of the solenoid valve, the responsiveness of the solenoid valve or a physical quantity corresponding to the responsiveness can be measured, and the functions and effects of claims 11 to 15 are produced. be able to.

[0045]

[First Embodiment] FIG. 1 is a block diagram showing a schematic configuration of a fuel supply device 10 for a vehicle gasoline engine to which the above-described invention is applied. The fuel supply device 10 includes a high-pressure fuel pump 11, a fuel tank 1
3, a low-pressure feed pump 14, an electromagnetic spill valve 41, and the like.

The high-pressure fuel pump 11 is for pressurizing the fuel to a high pressure, and includes a cylinder 20, a plunger 21 reciprocating in the cylinder 20, an inner peripheral wall of the cylinder 20 and the plunger 21. And a pressurizing chamber 22 defined by end faces.

The tappet 23 attached to the lower end of the plunger 21 is pressed against a cam 25 provided on a cam shaft 24 of the engine E by the biasing force of a spring (not shown). When the cam 25 rotates with the rotation of the camshaft 24, the plunger 21 reciprocates in the cylinder 20 and the volume in the pressurizing chamber 22 changes.

The pressurizing chamber 22 is connected to the fuel tank 13 by an inflow passage 30. A low-pressure feed pump 14 is provided in the inflow passage 30, and the fuel in the fuel tank 13 is sucked by the low-pressure feed pump 14 and discharged to the inflow passage 30 side. The discharged fuel is introduced into the pressurizing chamber 22 through the inflow passage 30 when the plunger 21 moves downward. A check valve 31 is provided in the inflow passage 30. The check valve 31 is connected between the low-pressure feed pump 14 and the pressurizing chamber 22 in the inflow passage 30.
Only the flow of fuel toward the head is allowed to prevent backflow.

A portion of the inflow passage 30 between the low-pressure feed pump 14 and the check valve 31 (hereinafter, this portion is referred to as a “discharge-side inflow passage 32”) is connected to the fuel tank 13 by a relief passage 33. A relief valve 34 is provided in the middle of the relief passage 33, and the relief valve 34 opens when the fuel pressure in the discharge-side inflow passage 32 becomes higher than a specified value. By opening the relief valve 34, the fuel in the discharge-side inflow passage 32 is returned to the fuel tank 13 through the relief passage 33. As a result, the pressure of the fuel transferred from the low-pressure feed pump 14 to the pressurizing chamber 22 is maintained substantially constant.

The pressurizing chamber 22 is connected by a supply passage 35 to a fuel reservoir 55 provided in the engine E.
The fuel reservoir 55 has a function of maintaining the fuel at a high pressure.

The engine E is provided with a plurality of injectors 56 corresponding to each cylinder. Each of the injectors 56 is connected to a fuel reservoir 55, and the high-pressure fuel in the fuel reservoir 55 is supplied to each of the injectors 5.
6 are distributed. The supply passage 35 is provided with a check valve 36 that allows only the flow of fuel from the pressurizing chamber 22 to the fuel reservoir 55.
This prevents the backflow of fuel from the fuel reservoir 55 to the pressurizing chamber 22.

The fuel reservoir 55 is connected to the fuel tank 13 by a relief passage 38 provided with a relief valve 37 on the way. The fuel in the fuel reservoir 55 is returned to the fuel tank 13 through the relief passage 38 by opening the relief valve 37 when the fuel pressure of the fuel reservoir 55 rises to a specified value or more. This prevents the fuel pressure in the fuel reservoir 55 from becoming excessive.

The injector 56 opens and closes based on a signal from an electronic control unit (hereinafter referred to as “ECU”) 60 of the engine E, thereby injecting and supplying a required amount of fuel to each cylinder of the engine E. . A fuel pressure sensor 61 is attached to the fuel reservoir 55. The fuel pressure sensor 61 detects the fuel pressure in the fuel reservoir 55,
A signal corresponding to the pressure is output to the ECU 60.

The pressurizing chamber 22 has a spill passage 11 having a portion connected to the pressurizing chamber 22 common to the supply passage 35.
The fuel tank 13 is connected to the fuel tank 13 via c and 11d via an electromagnetic spill valve 41 (the structure of the electromagnetic spill valve 41 is conceptually shown in FIG. 1 but will be described later in detail).

The electromagnetic spill valve 41 is a normally-open type electromagnetic valve, and its open / closed state is controlled by the ECU 60 to be energized. A spill passage 11d downstream of the electromagnetic spill valve 41
The pressure regulating valve 4 prevents the fuel from flowing back from the fuel tank 13 to the electromagnetic spill valve 41 side and opens when the fuel pressure in the spill passage 11d becomes higher than a specified pressure.
0 is provided.

The detailed configuration of the electromagnetic spill valve 41 is shown in the longitudinal sectional view of FIG. The flange member 72 of the electromagnetic spill valve 41 has a ring shape made of stainless steel. A nut 74 made of stainless steel is rotatably attached to the flange member 72. When fixing the electromagnetic spill valve 41 to the high-pressure fuel pump 11, the nut 74 is screwed into a screwing portion 11 a provided on the high-pressure fuel pump 11. At this time, the ring-shaped engaging rim 74 a provided at one end of the nut 74 engages with the ring-shaped engaging ridge 72 a provided on the outer peripheral surface of the flange member 72. Thus, the components of the flange member 72 and the electromagnetic spill valve 41 attached directly or indirectly to the flange member 72 can be fixed to the high-pressure fuel pump 11.

A yoke 76 is in contact with the flange member 72 on the side opposite to the nut portion 74. The yoke 76 is formed by pressing and bending a low-carbon steel plate, and has a rectangular shape as shown in the perspective view of FIG. 3, the front view of FIG. 4, the plan view of FIG. 5, and the right side view of FIG. Is bent into a substantially U-shape.

That is, the yoke 76 has a support portion 76a and, at both ends of the support portion 76a, two opposing portions 76b and 76c formed perpendicular to the support portion 76a. On the mutually facing surfaces of the facing portions 76b and 76c, a short cylindrical portion 76d,
76e is formed. As a result, the facing portion 76
central hole 7 from b, 76c to short cylindrical portion 76d, 76e
6f and 76g are formed. Short cylindrical portions 76d, 76
The distal end of e is arranged in a facing state with a gap therebetween, and a separation space 76h in which no yoke member is present is formed therebetween.

The support portion 76a of the yoke 76 is formed with two parallel slits 77 and 78 (corresponding to a deformation mechanism) cut in a direction substantially perpendicular to the direction in which the facing portions 76b and 76c are arranged. ing. The slits 77 and 78 are formed in a cut shape from one side end surface 76i of the support portion 76a, and do not reach the opposite side end surface 76j.
Therefore, the portion between the two slits 77, 78 is
A cantilevered variable portion 79 is formed.

As shown in FIG. 2 (also shown in FIG. 13 to be described later), the two opposing portions 76b and 7 of the yoke 76 are provided.
A ring-shaped electromagnetic coil 82 is arranged in the space sandwiched between 6c. The electromagnetic coil 82 is inserted into the center hole of the electromagnetic coil 82 by inserting the short cylindrical portions 76d and 76e into the yoke 76 when the yoke 76 is previously bent into a substantially U-shape as shown in FIGS. Installed.

Such an integrated body of the yoke 76 and the electromagnetic coil 82 (hereinafter, referred to as a coil sub-assembly 83) is embedded in the resin 86 together with the ring-shaped ridge 72b of the flange member 72 by injection molding. As a result, the coil sub-assembly 83 and the flange member 72 are integrated. A connector 86a for supplying a current to the electromagnetic coil 82 during the injection molding is also formed.

The central hole 72c of the flange member 72 and the central holes 76f and 76g of the yoke 76 are provided with a bottomed cylindrical member 8 made of a non-magnetic material such as stainless steel from the nut 74 side.
8 has been inserted. This cylindrical member 88 is
a and a cylindrical portion 88b protruding from the center of the disk portion 88a.
It is composed of The distal end of the cylindrical portion 88b is closed to form a bottom portion 88c. With the bottom 88c at the top, the cylindrical member 88
It is inserted into the center holes 76f and 76g of the yoke 76 from the 2c side. In the state where the tubular member 88 is inserted,
The cylindrical member 88 is in contact with the inner peripheral surfaces of the center holes 76f and 76g of the yoke 76.
No contact is made with the inner peripheral surface of c.

In the longitudinal sectional view of FIG. 7, the center holes 72c, 76
The valve sub-assembly 95 incorporated and integrated into the tubular member 88 before being inserted into f and 76g.
A core 90, an armature 92, and a sheet body 94 are arranged in the cylindrical portion 88b from the bottom 88c side. Among them, the core 90 and the armature 92 are made of a high magnetic permeability material such as permalloy or electromagnetic stainless steel. The sheet body 94 is a non-magnetic material such as stainless steel.

The core 90 has a cylindrical shape in which a housing hole 90a for housing the spring 96 and a through hole 90b are formed at the center axis position. The core 90 is fixed by crimping the tubular member 88 from the outside after being inserted into a necessary position in the tubular member 88.

A ring-shaped armature 92 is disposed in the tubular member 88 in a state where it is urged by the spring 96. Since the outer diameter of the armature 92 is smaller than the inner diameter of the tubular member 88, there is a gap between the armature 92 and the inner wall of the tubular member 88. A stem portion 9 of a poppet valve 98 (corresponding to a valve body) inserted from the seat body 94 side is inserted into a through-hole 92a formed at the center axis position of the armature 92.
The proximal end 98b at 8a is inserted. A ring-shaped groove 9 formed at the base end 98b of the poppet valve 98
At the portion 8c, the armature 92 is swaged from the outside, so that the poppet valve 98 is integrated with the armature 92. This allows the armature 92 and the poppet valve 98 to move in conjunction with each other.

The sheet body 94 has a cylindrical support portion 94.
It is pressed into the cylindrical member 88 at a. Thus, the inside of the tubular member 88 is closed from the disk portion 88a side. A through hole 94b is formed at the center axis position of the support portion 94a, and the stem portion 98a of the poppet valve 98 described above slidably passes through the inside of the through hole 94b.

A spill space 100 is formed in the base 94c of the seat body 94, and the periphery of the opening is formed in the valve seat 102.
It has been. The stem portion 98a of the poppet valve 98 passes through the through hole 94b of the support portion 94a and the spill space 100, and the valve face 1 has an enlarged distal end portion 98f.
04 is formed. The valve face 104 is configured to be separated from the valve seat 102 in conjunction with the movement of the stem 98a.

The valve seat 1 is provided on the seat body 94.
A stopper accommodating portion 94d is formed on the outer side of 02, and a disc-shaped stopper 106 is inserted into the stopper accommodating portion 94d. For this reason, the valve seat 102 and the valve face 104 are covered by the disc-shaped stopper 106.

A plurality of fuel flow through holes 106a are formed in the disc-shaped stopper 106, and the supply passage 35 (FIG. 1) is formed.
) Can be circulated at the time of spill as indicated by arrow A in the figure. In addition, the through hole 10 for fuel distribution
In the direction of 6a, the fuel is directly
Is detached from the distal end portion 98f so as not to collide.

Further, a discharge passage for discharging the fuel passing between the valve seat 102 and the valve face 104 to the pressure regulating valve 40 (see FIG. 1) as shown by the arrow B in the spill space 100. 94e is provided.

In the poppet valve 98, a plurality of axial grooves 98e are provided on the surface of two sliding portions 98d of the stem portion 98a which slides in the through holes 94b of the seat body 94, and a cylindrical member 98a is provided. 88 allows fuel to flow in and out. Therefore, the poppet valve 98 can smoothly move in the axial direction.

The fuel is supplied to the cylindrical member 88 and the sheet 94.
Or between the threaded portion 11a of the high-pressure fuel pump 11 and the seat body 94 so as not to leak out.
Rings 108 and 110 are arranged in ring-shaped grooves 94f and 94g formed in the base 94c of the sheet body 94.

The above-configured valve subassembly 9
In the manufacture of No. 5, first, a poppet valve 98 is inserted into the through hole 94b of the seat body 94 from the valve seat 102 side. Then, as described above, the armature 92 is pressed into the base end portion 98b of the poppet valve 98, and the armature 92 is caulked to fix the armature 92 to the poppet valve 98.

Next, with the valve face 104 and the valve seat 102 in close contact with each other, the base 94
The distance D between the surface 94h of c and the base end surface 92d of the armature 92 is measured.

Next, the distance between the distal end face 90c of the core 90 and the surface 88d on the distal end side of the disk portion 88a of the cylindrical member 88 is determined by the distance D measured as described above and the air gap G (the desired standard value). ) Until the sum of the cylindrical member 8
8 is pressed into the core 90. Then, the cylindrical member 88 is swaged from the outside at the portion where the core 90 is inserted, and
0 is fixed to the cylindrical member 88.

Next, the spring 96 is disposed in the accommodating hole 90a of the core 90, and the integrated body of the armature 92, the poppet valve 98 and the seat body 94 assembled as described above is seated on the tubular member 88. Support 9 of body 94
Press in at 4a and fix.

Next, by disposing the disc-shaped stopper 106 in the stopper accommodating portion 94d, the valve sub-assembly 95 shown in FIG. 7 is completed. Next, using the valve subassembly 95, the electromagnetic spill valve 41 as shown in FIG.
The process of manufacturing the device with its responsiveness adjusted will be described.

First, as shown in FIG. 8, a valve sub-assembly 95 is connected to a threaded portion 211a of a high-pressure fuel pump for measuring responsiveness by using a flange member 72 and a nut portion 74.
Fix on top. Therefore, the fuel pressure from the high pressure fuel pump acts on the spill passage 211c of the pump body 211b, and the fuel is returned from the spill passage 211d to the fuel tank side. The pump body 211b in the vicinity of the screw portion 211a is used to detect the timing of acceleration shock (corresponding to a physical quantity corresponding to responsiveness) when the valve face 104 of the poppet valve 98 collides with the valve seat 102. An acceleration sensor (G sensor) 252 is provided. This acceleration sensor 252
Outputs the measured acceleration as a signal to the response speed adjusting device main body 254.

To this structure, the coil sub-assembly 83 is further mounted so that the cylindrical member 88 is inserted into the center holes 76f and 76g as shown in FIG.
Thus, a magnetic circuit including the yoke 76, the core 90, and the armature 92 is formed.

Then, the exciting current conducting wire 256 a of the exciting section 256 controlled by the response speed adjusting device main body 254 is connected to the electromagnetic coil 82. This allows the response speed adjusting device main body 254 to control the excitation of the electromagnetic coil 82.

Next, as shown in FIG. 10, using the bending and pressing jig 258, the supporting surface 2 of the bending and pressing jig 258 is used.
58a is brought into contact with the tip of each of the opposed portions 76b and 76c of the yoke 76. The position of the bending and pressing jig 258 is fixed with respect to the high-pressure fuel pump for measuring the response. In this state, the tip of the pressure rod 260a of the bending pressure unit 260 provided on the bending pressure jig 258 is lightly brought into contact with the vicinity of the tip of the variable portion 79. This pressure rod 26
Numeral 0a is made of a non-magnetic material, and the variable portion 7a is driven by a motor (not shown) provided in the bending and pressing section 260.
9 can be moved forward and backward. The bending press unit 260 detects the moving position of the pressing rod 260a and transmits the moving position data to the response speed adjusting device main body 254. A contact sensor is provided at the tip of the pressure rod 260a, and transmits data on the presence or absence of contact with the variable portion 79 to the response speed adjusting device main body 254.

Further, a pressing jig 262 is provided on the bending and pressing jig 258. The pressing jig 262 presses the coil sub-assembly 83 against the flange member 72 by the urging force of the spring 262a.
In the axial direction.

The bending pressure unit 260 is driven and controlled by the response speed adjusting device main body 254 to
The protrusion amount of 0a is controlled. As shown in FIG. 10, the valve sub-assembly 95 and the coil sub-assembly 83
Is set, for example, by using a manual switch provided on the response speed adjusting device main body 254 with the pressing rod 260
a can be controlled to move forward and backward. The acceleration sensor 252, the response speed adjusting device main body 254, the excitation unit 256, the bending and pressing jig 258, and the bending and pressing unit 26 described above.
The configuration in which the main part is 0 and the pressing jig 262 corresponds to a response speed adjusting device.

When the setting for adjusting the response is completed as shown in FIG. 10, the response speed adjusting device main body 254 is set.
, The response speed adjustment process shown in the flowchart of FIG. 11 is executed. The response speed adjusting device main body 254 is configured as a computer including a CPU, a ROM, a RAM, an I / O, and the like. The processing in FIG. 11 is executed as a program in the ROM provided in the response speed adjusting device main body 254. It is remembered.

When the process shown in FIG. 11 is started, first, the response speed adjusting device main body 254 instructs the exciting unit 256 to supply an exciting current to the electromagnetic coil 82 (S110). In response to the excitation instruction, the excitation unit 256 supplies a current required for excitation to the electromagnetic coil 82 via the excitation current conducting wire 256a, and notifies the response speed adjusting device main body 254 of the energization timing.

The response speed adjusting device main body 254 determines the valve face 1 of the poppet valve 98 based on the current supply timing.
The response time Ti up to the fully closed timing at which the valve 04 collides with the valve seat 102 is measured (S120). The fully closed timing is detected by the acceleration sensor 252 having a change in acceleration according to a collision shock. In addition,
Although not shown, if acceleration shock does not occur even after a sufficient time has been measured in step S120, the process jumps to step S160, which will be described later, and ends.

Next, it is determined whether or not the measured response time Ti is equal to or longer than the high response side limit time TH (S130). If Ti <TH (“NO” in S130), the bending and pressing unit 260 is instructed to advance the pressing rod 260a toward the variable portion 79 by a predetermined amount and return to the original position again. The processing is performed (S135). That is,
As shown in FIG. 12, the variable portion 79 is pushed by the pressure rod 260a until it is plastically deformed. Next, the pressure rod 2
60a and return the tip of the pressure rod 260a to the variable portion 7
Move away from 9. As a result, the variable portion 79 is slightly plastically deformed, and is bent toward the electromagnetic coil 82 around the base portion as shown in FIG. In addition, the variable part 7
Since the gap 84 is provided between the electromagnetic coil 9 and the electromagnetic coil 82, the variable portion 79 does not contact or press the electromagnetic coil 82 during this responsiveness adjustment.

As a result, the variable portion 79 is
The upper and lower members 79a and 79b of 6a are shifted in a direction in which the two surfaces of the two slits 77 and 78 are less overlapped. Therefore, in the slits 77 and 78, the cross-sectional area of the magnetic circuit in the direction in which the lines of magnetic force pass (the direction of the arrow Y in the drawing) is reduced. Therefore, the magnetic resistance of the magnetic circuit including the yoke 76, the core 90, and the armature 92 increases, and the responsiveness of the electromagnetic spill valve slightly decreases.

Next, the processes of steps S110 and S120 are performed again, and the above-described response time Ti reflecting the response is measured. Then, it is determined whether or not Ti ≧ TH (S1).
30).

If Ti <TH (“N” in S130)
O "), the process of step S135 is repeated again as described above, and the variable portion 79 is further plastically deformed by the pressing rod 260a. This slightly increases the magnetic resistance of the magnetic circuit.

Thus, as long as Ti <TH,
The process (S135) of plastically deforming the variable portion 79 to reduce the cross-sectional area at the slits 77 and 78 and gradually increase the magnetic resistance is repeated. Although not shown, if Ti ≧ TH is not satisfied even when the deformation of the gap 84 between the support portion 76a and the electromagnetic coil 82 is performed on the variable portion 79, the process jumps to the process of step S160 described later. To end.

Then, the process of increasing the magnetic resistance (S135)
If Ti ≧ TH or step S13
If Ti ≧ TH from the beginning even if step 5 is not performed (“YES” in S130), it is then determined whether the response time Ti is equal to or less than the low response side limit time TL (S14).
0). Here, TL> TH.

If Ti ≦ TL (“YES” in S140), the response time Ti is within the standard (TH to TL).
, The output of “within the standard” is performed (S15).
0). Further, for example, if Ti> TL from the beginning and “NO” is determined in step S140, the output “nonstandard” is performed (S160). These “in-standard” and “non-standard” outputs are output from the response speed adjusting device main body 25.
4 and output to a host computer (not shown), and used as production management data. Thus, the response speed adjustment processing is once ended.

In this way, resin injection molding is performed on the integrated body of the valve sub-assembly 95 and the coil sub-assembly 83 whose response speed has been adjusted to be within the standard. This injection molding is performed over the entire coil sub-assembly 83 and the ring-shaped ridge 72b of the flange member 72. As a result, the coil sub-assembly 83 is fixed to and integrated with the flange member 72, and the electromagnetic spill valve 41 shown in FIG. 2 is completed. In addition, the responsiveness of all of the electromagnetic spill valves 41 is within the standard.

The electromagnetic spill valve 4 manufactured as described above
1 is built into the actual engine E as shown in FIG.
It works as follows. That is, after the compression of the pressurizing chamber 22 is started by the plunger 21 in the high-pressure fuel pump 11, a current is supplied to the electromagnetic coil 82 by a command from the ECU 60 before the timing at which the fuel pumping from the high-pressure fuel pump 11 ends. It is. This energization timing is set so that the amount of fuel required in the fuel pumping stroke is pumped to the fuel reservoir 55.

The yoke 76 and the armature 92 are generated by the magnetomotive force of the electromagnetic coil 82 when the electromagnetic coil 82 is energized.
And a magnetic circuit having the core 90 as a path operates. Therefore, the armature 92 is attracted to the core 90 against the urging force of the spring 96. And armature 92
The poppet valve 98 also moves toward the core 90 in conjunction with the above operation, so that the valve face 104 and the valve seat 102 are in close contact with each other, and the electromagnetic spill valve 41 is closed. Therefore,
The fuel pressure in the fuel reservoir 55 is increased by the pressure of the fuel in accordance with the compression of the pressurizing chamber 22.

Then, at the timing when the fuel pressure feeding process of the high-pressure fuel pump 11 ends and the fuel suction process starts, the EC
U60 stops supplying current to the electromagnetic coil 82. Then, the armature 92 whose attraction force to the core 90 has disappeared.
Is separated from the core 90 by the urging force of the spring 96. In conjunction with this, the valve face 104 is separated from the valve seat 102, so that the electromagnetic spill valve 41 is opened. Therefore, in the initial stage of the next fuel pressure feed stroke, the fuel from the supply passage 35 is discharged to the spill passages 11c and 11d, so that the high-pressure fuel pump 11
No fuel pumping to 5 is performed. Then, when the electromagnetic spill valve 41 is closed at an appropriate timing as described above, the fuel is pressure-fed to the fuel reservoir 55 in accordance with the compression of the pressurizing chamber 22.

[0098] Thereafter, by repeating such a process, appropriate high-pressure fuel supply from the high-pressure fuel pump 11 to the fuel reservoir 55 is performed. In the above-described configuration, the bending / pressing unit 260 corresponds to a magnetic resistance changing unit, the acceleration sensor 252 corresponds to a responsiveness measuring unit, and Step S1 is performed.
Steps S10 to S135 correspond to processing as response speed adjustment means.

According to the first embodiment described above, the following effects can be obtained. (I). Yoke 76 incorporated in electromagnetic spill valve 41
Is a variable portion 7 having two slits 77 and 78 that can change the magnetic resistance by simply bending it.
9 are formed. Therefore, as shown in FIG. 9, after assembling the magnetic circuit including the yoke 76, the core 90, and the armature 92, the bending degree of the variable portion 79 can be adjusted to change the magnetic resistance of the yoke 76.

As a result, the response of the electromagnetic spill valve 41 can be easily adjusted within the standard. Therefore,
Even if the tolerance of each part of the electromagnetic spill valve 41 is not strict,
In addition, the response of the electromagnetic spill valve 41 can be made uniform only by adjusting the degree of bending of the variable portion 79 without repeating the selection and assembly at the time of manufacturing by arranging a large number of parts.
Can be suppressed from varying. Thus, the productivity of the electromagnetic spill valve 41 can be improved.

(B). The yoke 76 used in the first embodiment has a shape obtained by bending a plate-shaped magnetic material into a substantially U-shape. Therefore, almost the entire yoke 76 is a main part of the magnetic circuit. Therefore, the variable portion 79 provided on the support portion 76a, which is a part of the yoke 76, can sufficiently reflect the amount of deformation as a change in the magnetic resistance of the magnetic circuit. Therefore, the response of the electromagnetic spill valve 41 can be effectively adjusted by the deformation of the variable portion 79.

(C). The change in the magnetic resistance due to the bending of the variable portion 79 is performed by changing the slit 7 formed in the support portion 76a.
This is realized by shifting the overlap between the two surfaces at the portions 7 and 78. Therefore, the yoke 7 can be easily formed with a simple configuration.
6 can be changed effectively.

(D). The response speed adjusting device main body 254 includes:
Until the measurement result by the acceleration sensor 252 reaches within the specified range, a process of changing the magnetic resistance of the yoke 76 by the bending and pressing unit 260 is performed. Therefore, the responsiveness of the electromagnetic spill valve 41 assembled as a magnetic circuit can be automatically adapted to the standard.

As described above, the responsiveness of the electromagnetic spill valve 41 can be adjusted within the standard only by changing the magnetic resistance of the yoke 76 with respect to the yoke 76 already incorporated in the magnetic circuit. For this reason, in addition to the effect described in (A), the suppression of the responsiveness variation is automatically performed, so that extremely high productivity can be achieved.

(E). The response speed adjusting device main body 254 uses an acceleration sensor 252 as a response measuring means. The acceleration sensor 252 detects the timing of the shock when the valve face 104 of the poppet valve 98 collides with the valve seat 102, and measures the movement state of the poppet valve 98. Since the timing of the collision shock appearing in the acceleration is a physical quantity corresponding to the responsiveness of the electromagnetic spill valve 41, responsiveness data can be easily obtained.

[Embodiment 2] Embodiment 2 differs from Embodiment 1 in the response speed adjusting device. An integral body of the coil sub-assembly 83 and the valve sub-assembly 95 is set in a fuel supply device for adjusting responsiveness that performs the same operation as the actual fuel supply device 10 shown in FIG.
Hereinafter, a configuration that performs the same function as that of the fuel supply device 10 will be described using reference numerals shown in FIG. The same components as those of the first embodiment will be described with the same reference numerals.

As shown in FIG. 14, the response speed adjusting device main body 354 is provided with a flow rate sensor 352 near the entrance of the fuel reservoir 55 in the supply passage 35 instead of the acceleration sensor. The flow rate sensor 352 detects the discharge amount from the high-pressure fuel pump 11 (the electromagnetic spill valve 41).
(Corresponding to a physical quantity corresponding to the response of). The response speed adjusting device main body 354 performs a response speed estimation adjustment process shown in the flowchart of FIG.
Excitation section 256, bending / pressing jig 258, pressing jig 262, bending / pressing section 260, and the like having other configurations are the same as those in the first embodiment.

After setting the integral body of the coil sub-assembly 83 and the valve sub-assembly 95 in the fuel supply device for adjusting the response, the process of FIG. 15 by the response speed adjusting device main body 354 is started.

First, the excitation timing of the electromagnetic coil 82 is set so that the discharge amount from the high-pressure fuel pump 11 is within the standard, and the high-pressure fuel pump 11 is operated by rotating the camshaft 24 (S210).

Next, the discharge amount V of the high-pressure fuel pump 11 is measured (S220). The discharge amount V is, for example, a discharge amount per one rotation of the camshaft 24. In addition, the discharge amount may be per one pressure feed stroke or the discharge amount per a plurality of rotations of the camshaft 24.

Next, it is determined whether or not the discharge amount V is larger than the high response side limit discharge amount VH (S230). For example, when the ejection amount V is at the point P1 shown in FIG.
V> VH ("YES" in S230). Therefore, next, in step S135 in the first embodiment,
In the same manner as described above, an instruction is given to the bending / pressing unit 260, and the pressing rod 260a is advanced by a predetermined amount toward the variable portion 79, and then returned again to perform a minute bending process (S240).

Then, it is determined whether or not this minute bending process has been performed a required number of times (S250). The required number of times is the number of repetitions of steps S220 and S240 for knowing the tendency of the discharge amount V to change with respect to the amount of bending, and the required number is set to two or more.

If the required number of times has not been reached (S250
Then, the flow returns to step S220, and the discharge amount V of the high-pressure fuel pump 11 is measured. Unless it is determined in step S230 that V ≦ VH, step S230
Step 240 is repeated.

Here, for example, assuming that the required number of times is three, three data of V1, V2, and V3 have been obtained as the ejection amount V at the time when "YES" is determined in step S250. The bending amount B is determined based on the moving position of the pressure rod 260a and the state of contact with the variable portion 79.
, Four data B1, B2, B3, and B4 are obtained.

Therefore, as shown in FIG. 16, the three state points P1,
P2 and P3 are obtained. From the arrangement of the state points P1, P2 and P3, the change tendency of the ejection amount V with respect to the degree of the bending amount B is found. Therefore, the response speed adjusting device main body 35
4 is extrapolated from the state point P3 in the direction in which the bending amount B increases as indicated by the dotted line in FIG. 16 to estimate the bending included in the range from the high response side limit discharge amount VH to the low response side limit discharge amount VL. The quantity Bx is calculated (S260). In the second embodiment, the higher the responsiveness of the electromagnetic spill valve 41, the sooner the electromagnetic spill valve 41 is fully closed. Therefore, the amount of fuel pumped from the high-pressure fuel pump 11 to the fuel reservoir 55 increases. Therefore, the rightward downward tendency as shown in FIG.

Next, the pressing rod 260a is moved by the bending pressing unit 260 by the bending estimated amount Bx calculated in this way, and the variable part 79 is bent (S270).

Next, returning to step S220, the discharge amount V of the high-pressure fuel pump 11 is actually measured (S220).
It is determined whether V> VH (S230). Where V ≦
If it is VH ("NO" in S230), it is next determined whether or not the discharge amount V is equal to or greater than the low response side limit discharge amount VL (S280).

If V ≧ VL (“YE” in S280)
S "), the discharge amount V is within the standard (the high response side limit discharge amount VH to
Since it is the low response side limit discharge amount VL), next, the output of “within the standard” is performed as in step S150 of the first embodiment (S290). If V <VL ("NO" in S280), the discharge amount V is shifted downward from the range of the high response side limit discharge amount VH to the low response side limit discharge amount VL. Then, the output of "out of specification" is performed as in step S160 of the first embodiment (S300). Note that also in the case where V <VL from the beginning, “N
O "and" NO "in step S280,
An "out of specification" output (S300) is made.

After the variable portion 79 has been bent by the estimated bending amount Bx in step S270, V> V
When it is determined to be H (“YES” in S230), the process proceeds to step S240, and the bending process for the estimated bending amount Bx is performed again for Bx.

Before the necessary number of steps S220 and S240 for obtaining the estimated bending amount Bx is performed, V ≦ VH may be satisfied. In such a case, the process directly proceeds to step S280. Step S290, S
One of the processes of 300 is performed.

It should be noted that the electromagnetic spill valve 41 is finally made of an integrated body of the coil sub-assembly 83 and the valve sub-assembly 95 which are within the standard in the same manner as in the first embodiment. You.

In the above-described configuration, the bending and pressing unit 2
60 corresponds to the magnetic resistance changing unit, the flow sensor 352 corresponds to the responsiveness measuring unit, and steps S210 to S270
Corresponds to processing as response speed estimation adjustment means.

According to the second embodiment described above, the following effects can be obtained. (I). The effects (a) to (e) of the first embodiment are produced. (B). The response speed estimation adjustment process shown in FIG. 15 is based on a comparison between the degree of bending of the variable portion 79 by the bending pressurizing unit 260 and the discharge amount of the high-pressure fuel pump 11 by the flow rate sensor 352. Estimated bending amount Bx of the variable portion 79 required to reach
Get. Then, based on the estimated bending amount Bx, a process of bending the variable portion 79 by the bending pressure unit 260 is performed.

That is, instead of repeating the minute bending by the bending and pressurizing unit 260 until the discharge amount of the high-pressure fuel pump 11 reaches the standard, the minute bending is repeated so that the tendency of the bending and the change of the discharge amount becomes clear. After that, the estimated bending amount Bx is obtained by calculation, and the variable portion 79 is immediately bent so as to become the estimated bending amount Bx.

Therefore, for example, as shown in FIG. 16, the minute bending is repeated up to the state point P4 in the three bending processes, and thereafter, the intermediate state points P5 to P
7 can be immediately reached to the state point P8 within the standard. That is, the response of the electromagnetic spill valve 41 can be kept within the standard with a small number of bending processes. Therefore, the responsiveness of the electromagnetic spill valve 41 can be adjusted more quickly than in the case of the first embodiment, and the productivity can be further improved.

(C). In the second embodiment, since the flow rate sensor 352 detects the amount of fuel discharged from the high-pressure fuel pump 11 to the fuel reservoir 55, the responsiveness of the electromagnetic spill valve 41 is most appropriately and practically specified. Can be stored in

[Other Embodiments] In the first and second embodiments, in order for the coil sub-assembly 83 and the valve sub-assembly 95 to finally become the electromagnetic spill valve 41, the bending of the variable portion 79 is performed. After adjusting the response speed by the processing, injection molding of the resin was performed. However, the electromagnetic spill valve 41 can be completed only by combining the coil sub-assembly 83 and the valve sub-assembly 95 by fixing the coil sub-assembly 83 and the valve sub-assembly 95 by some engagement mechanism. In this way, after the electromagnetic spill valve 41 is completely manufactured, the response speed adjustment processing by bending the variable portion 79 can be performed. become.

In the first and second embodiments, the bending of the variable portion 79 only reduces the cross-sectional area of the magnetic flux path at the slits 77 and 78. The bent state of the variable part 79 may be returned by engaging the variable part 79 at the tip of the 260a. That is, the cross-sectional area may be increased (returned). Therefore, when the yoke 76 is formed in a state where the variable portion 79 is slightly bent in or out in advance, and the responsiveness is adjusted as shown in FIG.
When the responsiveness is lower than the standard value, a process of increasing the responsiveness by returning the variable portion 79 to increase the cross-sectional area may be added.

In the first embodiment, the electromagnetic spill valve 4
Although the occurrence timing of the acceleration shock is used as the physical quantity corresponding to the response of 1, the movement state of the poppet valve 98 may be directly observed using the gap sensor as the response of the electromagnetic spill valve 41, for example. Good. Also, by actually performing the spill operation, the spill passage 11
The amount of fluid (spill amount) discharged from c to the spill passage 11d may be measured, or the amount of discharge discharged from the high-pressure fuel pump 11 to the fuel reservoir 55 as in the second embodiment may be measured. . The variable portion 79 may be deformed so that these measured values fall within the standard.

In the second embodiment, the electromagnetic spill valve 41
The discharge amount discharged from the high-pressure fuel pump 11 to the fuel reservoir 55 was measured as a physical amount corresponding to the response of
Alternatively, the spill amount may be measured. Further, the movement state of the poppet valve 98 is observed by using the same acceleration sensor and gap sensor as in the first embodiment, and the deformation amount of the variable portion 79 for estimating these measured values to be within the standard is estimated. , The deformation corresponding to the estimated deformation amount may be executed.

The slits 77 of the first and second embodiments are used.
Although the reference numeral 78 is formed parallel to the edge of the support portion, a slit 477 is formed in the support portion 476a of the yoke 476 in a substantially U-shape like a coil subassembly 483 shown in FIG. The region surrounded by the slit 477 may be used as the variable portion 479, and may be bent at the base. Also in this case, the cross-sectional area of the magnetic circuit in the direction in which the two opposing portions 476b and 476c of the yoke 476 are arranged (the Z direction in the drawing) can be adjusted, and the magnetic resistance of the yoke 476 can be easily changed. Can be.

In the above-described embodiments, the magnetic resistance is adjusted by changing the cross-sectional area by shifting two surfaces of the slit formed in the magnetic member constituting the magnetic circuit. The magnetic resistance may be adjusted by changing the cross-sectional area by partially removing the magnetic member to be cut. For example, a cutting tool or a sandblast nozzle is arranged on the support portion of the yoke where no slit is formed, and the above-described steps S135 and S24 are performed.
At the time of the processing of 0, S270, the magnetic resistance may be changed and adjusted by cutting the support portion of the yoke.

[0133]

According to the first aspect of the present invention, the yoke has a magneto-resistance changing mechanism capable of changing the magneto-resistance. Therefore, for example, by adjusting the magnetic resistance changing mechanism after assembling the magnetic circuit to change the magnetic resistance of the yoke, the responsiveness of the solenoid valve can be adjusted to a standard value. Therefore, the responsiveness of the solenoid valve can be made uniform only by adjusting the magnetoresistive change mechanism, without having to tighten the tolerances of each part and without having to repeat the selection and assembly at the time of manufacturing with many parts. In addition, it is possible to suppress variations in the responsiveness of the solenoid valve. Thus, the productivity of the solenoid valve can be improved.

According to a second aspect of the present invention, in the solenoid valve according to the first aspect, the yoke is formed by bending a plate-shaped magnetic material into a substantially U-shape.
In order to easily adjust the magnetic resistance of the yoke, it is better to use a single plate-shaped magnetic material, and changes in the shape of the yoke and the like at any position of the yoke greatly affect the magnetic resistance. . For this reason, a yoke formed by forming a plate-shaped magnetic material into a substantially U-shape is preferable as an object for forming a magnetoresistance changing mechanism. Therefore, in addition to the effect of the first aspect, the responsiveness of the solenoid valve can be adjusted more effectively.

According to a third aspect of the present invention, in the solenoid valve according to the first or second aspect, the magnetoresistive change mechanism comprises:
The yoke is configured as a deformation mechanism capable of performing one or both of a deformation process for increasing or decreasing a cross-sectional area of a portion corresponding to a magnetic circuit portion in the yoke. Increasing the cross-sectional area of the portion constituting the magnetic circuit decreases the magnetic resistance, and conversely, decreasing the cross-sectional area increases the magnetic resistance. By configuring the magnetic resistance changing mechanism as such a deformation mechanism, in addition to the effects of the first and second aspects, it is possible to more easily change the magnetic resistance of the yoke while being incorporated in the magnetic circuit.

According to a fourth aspect of the present invention, in the solenoid valve according to the third aspect, the deformation mechanism for increasing or decreasing the sectional area includes a portion corresponding to the magnetic circuit portion in a direction substantially orthogonal to the direction of the line of magnetic force. This is realized by forming a slit. When the yoke is deformed so that the two surfaces forming the slit are displaced, the cross-sectional area decreases, so that the magnetic resistance can be increased. Conversely, when the yoke is deformed in a direction in which the two surfaces coincide, the cross-sectional area increases. Therefore, the magnetic resistance can be reduced. Therefore, in addition to the effect of the third aspect, the deformation mechanism can be realized with a simple configuration.

In the solenoid valve according to the fifth aspect, a variable portion is formed between the slits by providing two slits in the configuration according to the fourth aspect. By bending the variable part around the base of the variable part by this,
The variable part can be raised or restored from the yoke body. When the variable portion is raised from the yoke main body, the two surfaces of the two slits in a direction substantially orthogonal to the direction of the magnetic force deviate, so that the cross-sectional area of the portion corresponding to the magnetic circuit portion decreases and the magnetic resistance increases. Conversely, when the variable portion is returned to the yoke main body, the two surfaces of the two slits coincide with each other, so that the cross-sectional area increases and the magnetic resistance decreases. Therefore, in addition to the effect of the fourth aspect, it is possible to change the magnetic resistance of the yoke while being incorporated in the magnetic circuit more easily and effectively.

[0138] In the solenoid valve according to the sixth aspect, the slit is formed in a substantially U-shape with respect to the configuration according to the fourth aspect, so that a region surrounded by the slit is formed as a variable portion. Have been. By bending the variable portion around the base of the variable portion, the variable portion can be raised or returned from the yoke main body. Therefore, the magnetic resistance can be adjusted in the same manner as in claim 5,
In addition to the effect of the fourth aspect, the magnetic resistance of the yoke as it is incorporated in the magnetic circuit can be changed more easily.

According to a seventh aspect of the present invention, in the method for adjusting the response speed of the electromagnetic valve, the excitation state of the magnetic circuit formed by the yoke, the core, and the armature is adjusted by the magnetomotive force of the electromagnetic coil, so that the core and the armature can be adjusted. A response distance of a solenoid valve that adjusts a relative distance of the yoke and adjusts a valve opening degree by a valve body interlocked with the armature, wherein a magnetic resistance of the yoke in a state incorporated in the magnetic circuit is changed. This adjusts the responsiveness of the solenoid valve. In this way, the responsiveness of the solenoid valve can be adjusted to a standard value only by changing the magnetic resistance of the yoke for the yoke already incorporated in the magnetic circuit. Therefore, the responsiveness of the solenoid valve should be uniform and the variability of the responsiveness of the solenoid valve should be suppressed without having to tighten the tolerances of each part and without having to repeat the selection and assembly at the time of manufacturing with many parts. Can be.
Thus, the productivity of the solenoid valve can be improved.

In the method for adjusting the response speed of the solenoid valve according to the eighth aspect, the solenoid valve according to the first or second aspect is used as an object for adjusting the response speed with respect to the configuration according to the seventh aspect, and the magnetic resistance is changed. The responsiveness of the solenoid valve is adjusted by changing the magnetic resistance of the yoke using a mechanism. Since the magnetic resistance changing mechanism provided on the yoke can be used in this way, in addition to the effect of claim 7, the magnetic resistance of the yoke that has been incorporated in the magnetic circuit can be changed more easily, and the solenoid valve can be efficiently operated. Responsiveness can be adjusted.

According to a ninth aspect of the present invention, in the method for adjusting the response speed of the electromagnetic valve, the change of the magnetic resistance of the yoke is performed by partially deforming the yoke. For this reason, in addition to the effect of claim 7,
The magnetic resistance of the yoke as it is incorporated in the magnetic circuit can be easily changed, and the responsiveness of the solenoid valve can be adjusted efficiently.

According to a tenth aspect of the present invention, in the method of adjusting a response speed of a solenoid valve, a third aspect of the invention is provided in comparison with the ninth aspect.
6 is used as a response speed adjustment target, and a part of the yoke is deformed using the deformation mechanism to adjust the responsiveness of the electromagnetic valve. Since the deformation mechanism provided on the yoke can be used in this way, in addition to the effect of the ninth aspect, the magnetic resistance of the yoke that has been incorporated in the magnetic circuit can be changed more easily.
The responsiveness of the solenoid valve can be adjusted more efficiently.

[0143] In the response speed adjusting device for an electromagnetic valve according to the eleventh aspect, the excitation state of the magnetic circuit formed by the yoke, the core and the armature is adjusted by the magnetomotive force of the electromagnetic coil, so that the core and the armature can be adjusted. A response speed adjusting device for an electromagnetic valve that adjusts a relative distance of the yoke and adjusts a valve opening degree by a valve body interlocked with the armature, and changes a magnetic resistance of the yoke incorporated in the magnetic circuit. Magnetic resistance changing means, responsiveness measuring means for measuring the responsiveness of the solenoid valve or a physical quantity corresponding to the responsiveness, and the magnetic resistance changing means until the measurement result by the responsiveness measuring means reaches a specified value. Response speed adjusting means for performing a process of changing the magnetic resistance of the yoke. As described above, the response speed adjusting means performs the process of changing the magnetic resistance of the yoke by the magnetic resistance changing means until the measurement result by the response measuring means reaches the specified value. Therefore, the responsiveness of the solenoid valve assembled as a magnetic circuit can be automatically adjusted to the standard value. Furthermore, the responsiveness of the solenoid valve can be adjusted to a standard value only by changing the magnetic resistance of the yoke for the yoke already incorporated in the magnetic circuit. Therefore,
The responsiveness of the solenoid valve can be made uniform and the variation can be suppressed without making the tolerances of each part strict and without repeating the selection and assembly at the time of manufacturing with many parts arranged. Furthermore, since the response variation is automatically suppressed, extremely high productivity of the solenoid valve can be achieved.

According to a twelfth aspect of the present invention, the excitation speed of the magnetic circuit formed by the yoke, the core, and the armature is adjusted by the magnetomotive force of the electromagnetic coil, so that the core and the armature can be adjusted. A response speed adjusting device for an electromagnetic valve that adjusts a relative distance of the yoke and adjusts a valve opening degree by a valve body interlocked with the armature, and changes a magnetic resistance of the yoke incorporated in the magnetic circuit. Magnetoresistance changing means, responsiveness measuring means for measuring the responsiveness of the solenoid valve or a physical quantity corresponding to the responsiveness, and a degree of change of the magnetic resistance of the yoke by the magnetoresistance changing means and the responsiveness measuring means. By comparing with the measurement result, the degree of change of the magnetic resistance of the yoke necessary for the measurement result to reach the specified value is estimated, and based on the estimation, And a response speed estimation adjusting means for performing a process of changing the magnetic resistance of the yoke by the magnetic resistance change means. The response speed estimating and adjusting means compares the degree of change in the magnetic resistance of the yoke by the magnetic resistance changing means with the measurement result by the response measuring means, and changes the magnetic resistance of the yoke necessary for the measurement result to reach a specified value. Estimate the degree. Then, based on this estimation, a process of changing the magnetic resistance of the yoke by the magnetic resistance changing means is performed. That is, the response speed estimating and adjusting means repeats the process of changing the magnetic resistance of the yoke by the magnetic resistance changing means until the measurement result by the response measuring means reaches the specified value, as in the response speed adjusting means. is not. The response speed estimation adjusting means only drives the magnetoresistance changing means and the responsiveness measuring means once or a small number of times. From this driving, the response speed estimating and adjusting means compares the degree of change in the magnetic resistance of the yoke with the response measurement result, and determines the degree of responsiveness or the physical quantity corresponding to the responsiveness with respect to the amount of change in the magnetic resistance. Obtain data on whether there has been a change in From this data, the degree of change in the magnetic resistance of the yoke to reach the intended response of the solenoid valve is estimated.
By using the degree of change of the magnetic resistance estimated in this way, the response of the solenoid valve can be quickly increased without repeating the driving of the response measuring means and the magnetic resistance changing means. Can be reached. Therefore, in addition to the same effect as in the eleventh aspect, the responsiveness of the solenoid valve can be adjusted more quickly, and the productivity can be further improved.

According to a thirteenth aspect of the present invention, in the response speed adjusting device for an electromagnetic valve, the electromagnetic valve according to the first or second aspect is used as an object for adjusting the response speed with respect to the configuration of the eleventh or twelfth aspect. The resistance changing means changes the magnetic resistance of the yoke using the magnetic resistance changing mechanism. Since the magnetic resistance changing mechanism provided on the yoke can be used in this way, in addition to the effect of claim 11 or 12, the magnetic resistance of the yoke which has been incorporated in the magnetic circuit can be changed more easily and efficiently. The responsiveness of the solenoid valve can be adjusted.

According to a fourteenth aspect of the present invention, in the response speed adjusting device for an electromagnetic valve according to the eleventh or twelfth aspect, the magnetoresistive change means deforms a part of the yoke to change the yoke. The reluctance is to be changed. As described above, the magnetic resistance of the yoke can be realized by the deformation of the yoke. In addition to the effects of the eleventh and twelfth aspects, the magnetic resistance of the yoke that is easily incorporated in the magnetic circuit can be changed, and the efficiency can be improved. Thus, the responsiveness of the solenoid valve can be adjusted.

According to a response speed adjusting device for an electromagnetic valve according to a fifteenth aspect, the electromagnetic valve according to any one of the third to sixth aspects is used as a response speed adjusting object in addition to the configuration according to the fourteenth aspect. The reluctance changing means uses the deformation mechanism to deform a part of the yoke. Since the deformation mechanism provided on the yoke can be used in this way, in addition to the effect of the fourteenth aspect, the magnetic resistance of the yoke that has been incorporated in the magnetic circuit can be changed more easily, and the efficiency of the solenoid valve can be improved more efficiently. Responsiveness can be adjusted.

According to a sixteenth aspect of the present invention, in the response speed adjusting device for an electromagnetic valve according to any one of the eleventh to fifteenth aspects, the responsiveness measuring means determines the movement state of the armature or the valve body. I will measure it. By measuring the moving state of the armature or the valve body in this way, the responsiveness of the solenoid valve or a physical quantity corresponding to the responsiveness can be measured, and the effects of claims 11 to 15 can be obtained.

According to a seventeenth aspect of the present invention, in the response speed adjusting device for an electromagnetic valve, the electromagnetic valve is attached to a fluid passage, and The responsiveness measuring means measures the fluid passage state of the solenoid valve. By measuring the fluid passage state of the solenoid valve as described above, the responsiveness of the solenoid valve or a physical quantity corresponding to the responsiveness can be measured, and the effects of claims 11 to 15 can be obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a schematic configuration of a fuel supply device for a vehicle gasoline engine according to a first embodiment.

FIG. 2 is a longitudinal sectional view of the electromagnetic spill valve according to the first embodiment.

FIG. 3 is a perspective view of a yoke according to the first embodiment.

FIG. 4 is a front view of the yoke according to the first embodiment.

FIG. 5 is a plan view of the yoke according to the first embodiment.

FIG. 6 is a right side view of the yoke according to the first embodiment.

FIG. 7 is a longitudinal sectional view of the valve subassembly according to the first embodiment.

FIG. 8 is an explanatory diagram showing a state in which the valve subassembly according to the first embodiment is attached to a high-pressure fuel pump for measuring responsiveness.

FIG. 9 is an explanatory view of a state where the valve subassembly and the coil subassembly according to the first embodiment are attached to a high-pressure fuel pump for measuring responsiveness.

FIG. 10 is a block diagram illustrating a configuration of a response speed adjusting device according to the first embodiment.

FIG. 11 is a flowchart of a response speed adjustment process executed by the response speed adjustment device main body according to the first embodiment.

FIG. 12 is an explanatory diagram of a response speed adjustment state in the first embodiment.

FIG. 13 is an explanatory diagram of a yoke deformation state of the coil subassembly according to the first embodiment.

FIG. 14 is a block diagram illustrating a configuration of a response speed adjusting device according to the second embodiment.

FIG. 15 is a flowchart of a response speed estimation adjustment process executed by the response speed adjustment device main body according to the second embodiment.

FIG. 16 is a graph showing a process of a response speed estimation adjustment process performed by the response speed adjustment device main body according to the second embodiment.

FIG. 17 is a perspective view showing a configuration of a coil subassembly according to another embodiment.

[Explanation of symbols]

10 ... fuel supply device for vehicle gasoline engine, 11 ...
High-pressure fuel pump, 11a ... threaded portion, 11c, 11d ... spill passage, 13 ... fuel tank, 14 ... low-pressure feed pump, 20 ... cylinder, 21 ... plunger, 22 ... pressurizing chamber, 23 ... tappet, 24 ... camshaft , 25 cam, 30 inflow passage, 31 check valve, 32 discharge side inflow passage, 33 relief passage, 34 relief valve, 35
... supply passage, 36 ... check valve, 37 ... relief valve, 38 ...
Relief passage, 40 ... Pressure regulating valve, 41 ... Electromagnetic spill valve, 55 ... Fuel reservoir, 56 ... Injector, 60 ...
Electronic control unit (ECU), 61 ... fuel pressure sensor, 72
... Flange member, 72a ... Ring-shaped engaging ridge, 72b
... Ring-shaped ridge, 72c ... Center hole, 74 ... Nut part, 7
4a: ring-shaped engaging edge portion, 76: yoke, 76a: support portion, 76b, 76c: opposed portion, 76d, 76e: short cylindrical portion, 76f, 76g: central hole, 76h: separation space, 76
i, 76j side end surface, 77, 78 slit, 79 variable part, 79a, 79b upper and lower members of the support part, 82
Electromagnetic coil, 83: coil subassembly, 84: air gap, 86: resin, 86a: connector, 88: cylindrical member, 88a: disk, 88b: cylindrical, 88c: bottom, 8
8d: surface on the tip side, 90: core, 90a: storage hole, 9
0b: Through hole, 90c: Tip surface, 92: Armature, 9
2a: through-hole, 92d: base end face, 94: sheet body, 94a: support, 94b: through hole, 94c: base,
94d: stopper storage section, 94e: discharge path, 94f, 9
4g: ring-shaped groove, 94h: surface, 95: valve sub-assembly, 96: spring, 98: poppet valve, 98a: stem, 98b: base end, 98c: ring-shaped groove, 98d: sliding part, 98e ... groove, 98f ... tip, 100 ... spill space, 102 ... valve seat, 10
4 ... Valve face, 106 ... Stopper, 106a ... Fuel through hole, 108, 110 ... Rubber O-ring,
211a: screw portion, 211b: pump body, 211
c, 211d: spill passage, 252: acceleration sensor, 2
54: Response speed adjusting device main body, 256: Exciting section, 256
a: Exciting current conducting wire, 258: Bending press jig, 25
8a: Supporting surface, 260: Bending and pressing part, 260a: Pressing rod, 262: Pressing jig, 262a: Spring,
352: flow rate sensor, 354: response speed adjusting device main body,
476: yoke, 476a: support portion, 476b, 476
c: facing part, 477: slit, 479: variable part, 4
83: coil subassembly, E: engine.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) F02M 51/06 F02M 51/06 G F-term (Reference) 3G066 AA02 AB02 AD12 BA54 BA57 BA69 CA01S CA04T CA08 CA09 CA20U CB07U CE02 CE23 CE24 CE25 CE26 CE31 DC00 DC11 DC18 3H106 DA02 DA12 DA23 DB02 DB12 DB23 DB32 DC02 DC17 DD03 EE04 FB43 GA11 JJ02 JJ06 KK18 5E048 AA10 AB01 AD03 CA02

Claims (17)

[Claims] 1. A valve linked to the armature by adjusting the excitation state of a magnetic circuit formed by a yoke, a core, and an armature by a magnetomotive force of an electromagnetic coil to adjust a relative distance between the core and the armature. An electromagnetic valve for adjusting a valve opening degree by a body, wherein the yoke has a magnetic resistance changing mechanism capable of changing magnetic resistance. 2. The yoke is formed by bending a plate-shaped magnetic material into a substantially U-shape.
The described solenoid valve. 3. The magnetic resistance changing mechanism is capable of performing one or both of a deformation process for increasing or decreasing a cross-sectional area of a portion corresponding to the magnetic circuit portion in the yoke. 3. The solenoid valve according to claim 1, wherein the solenoid valve is a deformation mechanism. 4. The solenoid valve according to claim 3, wherein the deformation mechanism has a slit formed in a portion corresponding to the magnetic circuit portion in a direction substantially orthogonal to a direction of a magnetic line of force. 5. The electromagnetic device according to claim 4, wherein two slits are formed substantially in parallel from an edge of the yoke so that a variable portion is formed between the two slits. valve. 6. The solenoid valve according to claim 4, wherein the slit is formed in a substantially U-shape so that a region surrounded by the slit is formed as a variable portion. 7. A valve that adjusts a relative distance between the core and the armature by adjusting an excitation state of a magnetic circuit formed by a yoke, a core, and an armature by a magnetomotive force of an electromagnetic coil, and a valve that is interlocked with the armature. A response speed adjusting method for an electromagnetic valve that adjusts a valve opening degree by a body, wherein the responsiveness of the electromagnetic valve is adjusted by changing a magnetic resistance of the yoke in a state incorporated in the magnetic circuit. Adjusting method of response speed of solenoid valve. 8. The responsiveness of the solenoid valve is adjusted by using the solenoid valve according to claim 1 or 2 as a response speed adjustment target and changing the magnetic resistance of the yoke using the magnetic resistance changing mechanism. The method according to claim 7, wherein the response speed of the solenoid valve is adjusted. 9. The method according to claim 7, wherein the change of the magnetic resistance of the yoke is performed by partially deforming the yoke. 10. The responsiveness of the solenoid valve is adjusted by using the solenoid valve according to claim 3 as a response speed adjustment target and partially deforming the yoke using the deformation mechanism. The method according to claim 9, wherein the response speed of the solenoid valve is adjusted. 11. A valve linked to the armature by adjusting an excitation state of a magnetic circuit formed by a yoke, a core, and an armature by a magnetomotive force of an electromagnetic coil to adjust a relative distance between the core and the armature. A response speed adjusting device for an electromagnetic valve that adjusts a valve opening degree by a body, wherein a magnetic resistance changing unit that changes a magnetic resistance of the yoke in a state incorporated in the magnetic circuit; Responsiveness measuring means for measuring a physical quantity corresponding to the responsiveness; and a response speed for performing a process of changing the magnetic resistance of the yoke by the magnetic resistance changing means until the measurement result by the responsiveness measuring means reaches a specified value. A response speed adjusting device for an electromagnetic valve, comprising: adjusting means. 12. A valve which cooperates with the armature by adjusting an excitation state of a magnetic circuit formed by a yoke, a core and an armature by a magnetomotive force of an electromagnetic coil to adjust a relative distance between the core and the armature. A response speed adjusting device for an electromagnetic valve that adjusts a valve opening degree by a body, wherein a magnetic resistance changing unit that changes a magnetic resistance of the yoke in a state incorporated in the magnetic circuit; Responsiveness measuring means for measuring a physical quantity corresponding to the responsiveness, and a degree of change of the magnetic resistance of the yoke by the magnetoresistance changing means and a measurement result by the responsiveness measuring means, wherein the measurement result is a specified value. The degree of change in the magnetic resistance of the yoke required to reach the maximum value is estimated, and based on the estimation, the magnetic resistance of the yoke is changed by the magnetic resistance changing means. And a response speed estimating and adjusting means for performing further processing. 13. The magnetic valve according to claim 1, wherein said electromagnetic valve is used as a response speed adjustment target, and said magnetic resistance changing means changes the magnetic resistance of said yoke using said magnetic resistance changing mechanism. Claim 11 or 1
3. The response speed adjusting device for an electromagnetic valve according to 2. 14. The response speed adjusting device for an electromagnetic valve according to claim 11, wherein said magnetic resistance changing means changes a magnetic resistance of said yoke by deforming a part of said yoke. 15. A solenoid valve according to claim 3, wherein said solenoid valve is used as a response speed adjustment target, and said magnetic resistance changing means deforms a part of said yoke using said deformation mechanism. The response speed adjusting device for an electromagnetic valve according to claim 14, wherein 16. The response speed adjusting device for an electromagnetic valve according to claim 11, wherein the responsiveness measuring means measures a moving state of the armature or the valve body. 17. The electromagnetic valve according to claim 11, wherein the solenoid valve is attached to a fluid passage, and the responsiveness measuring unit measures a fluid passage state of the solenoid valve. The response speed adjusting device for an electromagnetic valve according to the above.