CN212898759U - Fuel metering valve with easily-assembled structure - Google Patents

Abstract

The utility model provides a fuel metering valve of easy assembly of structure belongs to the technical field of solenoid valve. A fuel metering valve with an easily assembled structure comprises a valve body, an electromagnetic assembly and a moving assembly; the utility model discloses an inner chamber of the valve body that is equipped with the electromagnetic component with outside cover sets up to one end and takes the straight tube-shape of open-ended, and can dismantle on the opening and be connected with an adjusting valve gap, in addition, set up the motion subassembly into cylindric integral type structure, one end is case portion, the other end is armature portion, and set up the centre bore that runs through its both ends and the oil guide hole of intercommunication centre bore on the motion subassembly, and be provided with in the inner chamber and support the spring tight on the motion subassembly, make when the assembly, only need place the spring in the inner chamber and insert the inner chamber with the motion subassembly is direct from valve body area open-ended one end, and install adjusting valve gap can, installation steps is few, install one step and put in place, and operation process is simple and convenient, change in the.

Description

Fuel metering valve with easily-assembled structure

Technical Field

The utility model relates to a technical field of solenoid valve specifically is a fuel metering valve who relates to an easy assembly of structure.

Background

The fuel metering valve is a common structure on a high-pressure oil pump in an automobile transmitter system, and can adjust the flow of oil liquid and realize the adjustment of oil supply pressure.

At present, the fuel metering valve generally includes valve body, electromagnetic component and motion subassembly, and the motion subassembly sets up in the valve body, and the electromagnetic component sets up outside the valve body, removes in the valve body through electromagnetic component drive motion subassembly for the size of the oil inlet of motion subassembly on the in-process regulation valve body that removes, thereby the realization is to the regulation of fluid flow. However, a valve body of an existing fuel metering valve is generally of a structure with openings at two ends, a partition plate is arranged in an inner cavity of the valve body, the inner cavity of the valve body is divided into two chambers by the partition plate, adjusting valve covers are respectively arranged on the openings at two ends of the valve body, meanwhile, a valve core in a motion assembly is installed in the corresponding chamber from one opening, an ejector rod and an armature in the motion assembly are installed in the corresponding chamber from the other opening after the installation of the ejector rod and the armature is completed, then a required spring is installed on the valve core and/or the armature, and the opening of the corresponding chamber is sealed by the adjusting valve cover and the elastic force of the relevant spring is adjusted. Therefore, the fuel metering valve needs to connect the ejector rod and the armature in the moving assembly, and then the armature and the valve core are installed from the two ends of the valve body respectively, so that the installation steps are more, the operation is complex, the structure assembly is inconvenient, and the manufacturing efficiency is lower.

Disclosure of Invention

To the above-mentioned problem that exists among the prior art, aim at providing the fuel metering valve that a structure is easily assembled now, with only setting up one end open-ended valve body, the inner chamber of valve body is a straight tube-shape structure, and set up the motion subassembly of the integral type of cylinder form, simultaneously, the one end that just is located electromagnetic assembly on the motion subassembly is provided with the spring, make when the installation, only need place the spring in the inner chamber after directly inserting the motion subassembly and locate the inner chamber of valve body, and through adjusting the valve gap with the opening of valve body spacing can, install one step and target in place, the step is less, it is more convenient to operate, it is easier to assemble, improve the manufacturing efficiency of fuel metering valve.

The specific technical scheme is as follows:

a fuel metering valve with an easily assembled structure comprises a valve body, an electromagnetic assembly and a motion assembly, and is characterized in that the valve body is provided with a straight cylindrical inner cavity with an opening at one end, an adjusting valve cover which is detachably connected is arranged on the opening of the valve body, an oil outlet communicated with the inner cavity is arranged on the adjusting valve cover, an oil inlet communicated with the inner cavity is arranged on the side wall of the valve body at the end with the opening, the electromagnetic assembly is sleeved outside the valve body and is positioned at the end without the opening of the valve body, the motion assembly is of a cylindrical integrated structure, one end of the motion assembly is a valve core part, the other end of the motion assembly is an armature part, the motion assembly is arranged in the inner cavity in a sliding manner, the armature part of the motion assembly is positioned at the end with the electromagnetic assembly of the valve body, the valve core part of the motion assembly is positioned at the end with the opening of the valve body, and, the moving component is provided with a center hole penetrating through end faces of two ends of the moving component along the axial direction of the moving component, one end of the moving component, which is positioned at the valve core part, is provided with an oil guide hole communicated with the center hole along the radial direction of the moving component, and the oil guide hole corresponds to the oil inlet.

The fuel metering valve with the structure easy to assemble is characterized in that the adjusting valve cover is in threaded connection with the valve body.

The fuel metering valve with the structure easy to assemble is characterized in that a circle of annular oil guide groove is formed in the area, located on the oil guide hole, of the side wall of the moving assembly, one end, deviating from the communicating center hole, of the oil guide hole is communicated with the oil guide groove, and meanwhile, the oil guide groove is communicated with the oil inlet.

The fuel metering valve with the structure easy to assemble is characterized in that the central hole is a variable-section hole, the central hole is divided into a valve core section located at the valve core part and an armature section located at the armature part, the aperture of the valve core section is larger than that of the armature section, and the oil guide hole is communicated with the valve core section.

The fuel metering valve with the structure easy to assemble is characterized in that the end part, located at the armature part, of the moving assembly is provided with the spring positioning hole, the spring positioning hole and the armature section of the central hole are coaxially arranged, the aperture of the spring positioning hole is larger than that of the armature section of the central hole, a step is formed between the spring positioning hole and the armature section of the central hole, and one end, close to the armature part, of the spring is inserted into the spring positioning hole and is tightly abutted to the step.

The fuel metering valve with the structure easy to assemble is characterized in that an embedding hole is formed in the inner cavity of the valve body and in the bottom wall of one end, which deviates from the opening, and one end, which deviates from the abutting armature portion, of the spring is inserted into the embedding hole.

The fuel metering valve with the structure easy to assemble is characterized in that the outer wall of the moving assembly is further provided with a circle of annular vent grooves, and the moving assembly is radially provided with vent holes, wherein one end of each vent groove is communicated with the central hole, and the other end of each vent groove is communicated with the vent groove.

The fuel metering valve with the structure easy to assemble is characterized in that the oil outlet hole in the adjusting valve cover is opposite to the central hole in the moving assembly, and the oil outlet is located on the axis extension line of the central hole.

The fuel metering valve with the easily assembled structure is characterized in that the oil inlet on the valve body is provided with a plurality of oil inlets, the plurality of oil inlets are distributed on the side wall of the valve body in an annular array mode, meanwhile, the oil guide holes in the moving assembly are also provided with a plurality of oil guide holes, the plurality of oil guide holes are also distributed on the side wall of the moving assembly in an annular array mode, and each oil guide hole is communicated with the oil guide groove.

The fuel metering valve with the structure easy to assemble is characterized in that a circle of sealing groove is formed in the valve body and is located on the outer wall of one end, provided with the opening, of the valve body, the sealing groove is located between the oil inlet and the oil outlet, and meanwhile, a sealing ring is arranged in the sealing groove.

The positive effects of the technical scheme are as follows:

the fuel metering valve of the easy assembly of foretell structure, the inner chamber through the valve body with an pot head equipped with electromagnetic assembly sets up to one end and takes the open-ended straight tube-shape, and can dismantle on the opening and be connected with the regulation valve gap of taking an oil-out, and simultaneously, set up the motion subassembly into a cylindric integral type structure, and set up the oil guide hole of putting the centre bore that runs through and intercommunication centre bore, and, the one end that just is located the motion subassembly in the inner chamber is provided with the spring, make place the spring directly insert the motion subassembly in the inner chamber of locating the valve body after in the inner chamber, and through adjust the valve gap with the opening of valve body spacing can, installation steps are few, the installation is put in place in one step, the operation process is simple.

Drawings

FIG. 1 is a block diagram of an embodiment of a fuel metering valve of the present invention constructed for ease of assembly;

fig. 2 is a schematic view of the installation of the valve body and the electromagnetic assembly according to a preferred embodiment of the present invention;

fig. 3 is a diagram of a kinematic assembly according to a preferred embodiment of the present invention.

In the drawings: 1. a valve body; 11. an inner cavity; 12. an oil inlet; 13. a sealing groove; 111. embedding holes; 131. a seal ring; 2. an electromagnetic assembly; 3. a motion assembly; 31. a valve core part; 32. an armature portion; 33. a central bore; 34. an oil guide hole; 35. an oil guide groove; 36. a spring positioning hole; 37. a vent channel; 38. a vent hole; 331. a valve core section; 332. an armature section; 4. adjusting the valve cover; 41. an oil outlet; 5. a spring.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the following embodiments are specifically described with reference to fig. 1 to 3, but the following contents are not intended to limit the present invention.

FIG. 1 is a block diagram of an embodiment of a fuel metering valve of the present invention constructed for ease of assembly; fig. 2 is a schematic view of the installation of the valve body and the electromagnetic assembly according to a preferred embodiment of the present invention; fig. 3 is a diagram of a kinematic assembly according to a preferred embodiment of the present invention. As shown in fig. 1, 2 and 3, the fuel metering valve of the present embodiment, which is easy to assemble in structure, includes: valve body 1, electromagnetic component 2 and motion subassembly 3, 1 overcoat of valve body is equipped with electromagnetic component 2, and 1 internal slipping of valve body is equipped with motion subassembly 3, removes in valve body 1 through 2 drive motion subassemblies 3 of electromagnetic component to the realization is to the regulation of flow.

Specifically, the valve body 1 is provided with an inner cavity 11 with an opening at one end, and the inner cavity 11 is of a straight cylindrical structure, so that the aperture of the inner cavity 11 is not smaller than the aperture of the opening of the inner cavity, and a condition is provided for the subsequent moving assembly 3 to be rapidly installed in the inner cavity 11 from the opening. And, be provided with on the opening of valve body 1 and dismantle the regulation valve gap 4 of connection for under the condition of adjusting valve gap 4 and dismantling, can make things convenient for motion subassembly 3 to install in inner chamber 11 from the opening, and under the condition of adjusting valve gap 4 installation, adjust valve gap 4 and can restrict the opening of valve body 1, avoid the motion subassembly 3 roll-off in the inner chamber 11 of valve body 1, structural reliability is higher. In addition, an oil outlet 41 communicated with the inner cavity 11 is formed in the adjusting valve cover 4, so that oil in the inner cavity 11 of the subsequent valve body 1 can be discharged through the oil outlet 41 in the adjusting valve cover 4, and an oil discharging function is realized. And, set up the oil inlet 12 that communicates the inner chamber 11 on the valve body 1 and the lateral wall that is located its one end that is provided with the opening for the fluid transported in the outside oil circuit pipeline can enter into the inner chamber 11 from the oil inlet 12 on the valve body 1, and then discharge through the oil-out 41 on the regulation valve gap 4, realize switching on of oil circuit. And, 2 covers of electromagnetic component locate the valve body 1 outside and be located the valve body 1 and not be provided with the open-ended one end, avoided disturbing the oil feed because of arranging of electromagnetic component 2. Simultaneously, motion subassembly 3 is columniform integral type structure for the inner chamber 11 of the straight tube-shape of cooperation that motion subassembly 3 can be better can make the removal of motion subassembly 3 can be by the inner chamber 11 direction of the straight tube-shape, guarantees the stability of its removal, can also make things convenient for motion subassembly 3 to follow the opening of valve body 1 simultaneously in direct mount in inner chamber 11, and it is more convenient to install. And, one end of the motion assembly 3 is a valve core portion 31, the other end is an armature portion 32, and the motion assembly 3 is slidably disposed in the inner cavity 11, the armature portion 32 of the motion assembly 3 is located at one end of the valve body 1 where the electromagnetic assembly 2 is disposed, the valve core portion 31 of the motion assembly 3 is located at one end of the valve body 1 with an opening, so that the valve core portion 31 of the motion assembly 3 can be used in cooperation with one end of the valve body 1 where the oil inlet 12 is disposed, and the electromagnetic assembly 2 can drive the armature portion 32 of the motion assembly 3 to move the whole motion assembly 3 in the inner cavity 11 of the valve body 1, thereby providing conditions for adjusting the flow rate of the oil liquid through the subsequent movement of the. Moreover, a spring 5 abutting against the armature part 32 is arranged in the inner cavity 11 of the valve body 1 and at the end part of the armature part 32 of the moving component 3, and the thrust of the spring 5 to the moving component 3 is opposite to the thrust direction of the electromagnetic component 2 acting on the moving component 3, so that the moving component 3 can be limited to move freely in the inner cavity 11 of the valve body 1, the moving component 3 can be reset through the spring 5 after being pushed by the electromagnetic component 2, and the normal operation of the fuel metering valve is ensured. In addition, a center hole 33 penetrating through end faces of two ends of the moving assembly 3 is formed in the moving assembly 3 along the axial direction of the moving assembly, so that the center hole 33 in the moving assembly 3 can communicate two chambers separated by the inner cavity 11 due to arrangement of the moving assembly 3, pressure at two ends of the moving assembly 3 can be consistent in the moving process of the moving assembly 3, and the moving assembly 3 can normally move under the action of the electromagnetic assembly 2 and the spring 5. Meanwhile, an oil guide hole 34 communicated with the central hole 33 is formed in one end, located on the valve core portion 31, of the moving assembly 3 along the radial direction of the moving assembly, the oil guide hole 34 corresponds to the oil inlet 12, so that oil entering from the oil inlet 12 can enter the central hole 33 through the oil guide hole 34 and flows into the inner cavity 11 of the valve body 1 through the central hole 33, the oil in the inner cavity 11 of the valve body 1 can be discharged through the oil outlet 41 in the adjusting valve cover 4, conduction of an oil path is achieved, in the moving process of the moving assembly 3, the size of the overlapping area of the oil inlet 12 and the oil guide hole 34 can be adjusted, adjustment of oil flow is achieved, and the structural design is more reasonable. It should be noted that the electromagnetic assembly 2 disclosed in the present embodiment is a coil structure widely used in the market, and is not within the protection scope disclosed in the present embodiment.

More specifically, detachable adjusting valve gap 4 is threaded connection with valve body 1, at this moment, be provided with the internal thread on the open-ended inner wall of valve body 1, be provided with the external screw thread with internal thread fit on adjusting valve gap 4, make adjusting valve gap 4 adjustable in the connection elasticity on valve body 1, that is to say, the length that the threaded end of adjusting valve gap 4 stretches into the opening of valve body 1 is adjustable, after motion subassembly 3 installed in the inner chamber 11 of valve body 1, because the case end of motion subassembly 3 supports tightly on adjusting valve gap 4 stretches into the intraoral screw thread of valve body 1 under the effect of spring 5, make the user accessible adjust adjusting valve gap 4's the length that the threaded end stretches into the opening of valve body 1 and realize the regulation to spring 5 pre-pressure, thereby make the fuel metering valve can satisfy more user demands, adaptability is higher, structural design is more reasonable. In addition, in order to adjust the adjusting valve cover 4 conveniently, the non-threaded end of the adjusting valve cover 4 is in regular hexagon shape and the like, so that a user can screw the adjusting valve cover 4 by means of a wrench and other tools, and the structural design is more reasonable.

More specifically, a circle of annular oil guiding groove 35 is disposed on the side wall of the moving assembly 3 slidably disposed in the inner cavity 11 of the valve body 1 and in the area of the oil guiding hole 34, and one end of the oil guiding hole 34 departing from the communicating central hole 33 is communicated with the oil guiding groove 35, and simultaneously, the oil guiding groove 35 is communicated with the oil inlet 12, so that after oil enters from the oil inlet 12 on the valve body 1, the oil enters the oil guiding groove 35 first, the oil in the oil guiding groove 35 enters the central hole 33 through the oil inlet 12, flows into the inner cavity 11 of the valve body 1 through the central hole 33, and finally is discharged from the oil outlet 41 on the adjusting valve cover 4, thereby realizing the communication of oil paths, and the annular oil guiding groove 35 can adapt to the structure of multiple oil inlets 12 and multiple oil guiding holes 34, and the annular oil guiding groove 35 can adapt to the rotation of the moving assembly 3, thereby preventing the problem that the oil inlets 12 and the oil guiding holes 34 cannot correspond to each other and, the structural design is more reasonable.

More specifically, the central hole 33 of the moving assembly 3 is a variable cross-section hole, the central hole 33 is divided into a valve core section 331 located in the valve core portion 31 and an armature section 332 located in the armature portion 32, and the aperture of the valve core section 331 is larger than that of the armature section 332, so as to provide a structural basis for a step in the spring positioning hole 36 for subsequently arranging and defining the spring 5. And the oil guide hole 34 is communicated with the valve core section 331, so that the oil guide hole 34 can be communicated with a section with a larger aperture of the central hole 33, thereby ensuring that oil can rapidly flow through the central hole 33 in the moving assembly 3, avoiding the problem of limiting the flow of the oil due to the smaller aperture of the central hole 33 and ensuring the reliability of flow regulation.

More specifically, a spring positioning hole 36 is formed in the end portion of the moving assembly 3, which is located at the armature portion 32, at this time, the spring positioning hole 36 is coaxially disposed with the armature section 332 of the central hole 33, so that the spring positioning hole 36 is located at the center of the end portion of the armature portion 32 of the moving assembly 3, and thus the uniformity of the stress of the moving assembly 3 is ensured. Moreover, the aperture of the spring positioning hole 36 is larger than that of the armature section 332 of the central hole 33, a step is formed between the spring positioning hole 36 and the armature section 332 of the central hole 33, one end of the spring 5 abutting against the armature part 32 is inserted into the spring positioning hole 36 and abuts against the step, namely, the limitation of one end of the spring 5 abutting against the moving component 3 is realized through the spring positioning hole 36, the problems of uneven stress, abrasion and the like caused by the deflection of the spring 5 in the moving process of the moving component 3 are prevented, and the abutting reference can be provided for the abutting against of the spring 5 through the step formed between the spring positioning hole 36 and the armature section 332 of the central hole 33, meanwhile, the central hole 33 can be ensured to be continued through the spring positioning hole 36, the same pressure on the end faces at two ends of the moving component 3 is ensured, and the condition is provided for the normal movement of the moving component 3.

More specifically, an embedding hole 111 has been seted up in the inner chamber 11 of valve body 1 and on being located the diapire that deviates from open-ended one end, spring 5 deviates from and supports tightly armature portion 32 one end and inserts and locate in embedding hole 111, at this moment, embedding hole 111 is the formula hole that sinks, the space that inner chamber 11 was occupied in embedding hole 111 has been avoided, guarantee that the removal stroke of motion subassembly 3 can satisfy the user demand, and, embedding hole 111 can provide spacingly for spring 5 deviates from the one end that supports tightly armature portion 32, the problem that the in-process that leads to spring 5 to take place the skew in motion subassembly 3 removal has also been prevented, and then guarantee the homogeneity of motion subassembly 3 atress, the life of extension motion subassembly 3.

More specifically, the outer wall of the moving component 3 is further provided with a circle of annular vent grooves 37, the moving component 3 is radially provided with a vent hole 38 with one end communicated with the central hole 33 and the other end communicated with the vent grooves 37, it is ensured that the moving component and the inner wall of the inner cavity 11 of the valve body 1 can be communicated with the central hole 33 through the vent grooves 37 and the vent holes 38, the consistency of the pressure at the side wall of the moving component 3 and the pressure at the end part is maintained, the normal movement of the moving component 3 is also ensured, and the structural design is more reasonable.

More specifically, adjust the oil outlet on the valve gap 4 and just to setting up with centre bore 33 on the motion subassembly 3, and oil-out 41 is located the axis extension line of centre bore 33, make the fluid flow direction oil-out 41 that flows out more fast in the centre bore 33 from the motion subassembly 3, even also make the case end at the motion subassembly 3 support when leaning on the screw thread of adjusting valve gap 4 to serve simultaneously, also can maintain centre bore 33 and oil-out 41's intercommunication, avoid appearing influencing the problem of oil extraction because of the removal of motion subassembly 3, structural design is more reasonable.

More specifically, oil inlet 12 on the valve body 1 is provided with a plurality of, and a plurality of oil inlet 12 is the annular array and distributes on the lateral wall of valve body 1, even be provided with round oil inlet 12 on the valve body 1, the oil feed capacity has been increased, and simultaneously, oil guide hole 34 on the motion subassembly 3 is provided with a plurality of equally, a plurality of oil guide hole 34 is the annular array and distributes on the lateral wall of motion subassembly 3 equally, each oil guide hole 34 all communicates with oil guide groove 35, the fluid that gets into in each oil inlet 12 all need enter into oil guide groove 35 earlier promptly, the rethread oil guide groove 35 is carried fluid to each oil guide hole 34 in, thereby make the oil feed capacity in each oil guide hole 34 the same, the stationarity of oil feed has been guaranteed.

More specifically, the last round seal groove 13 of having seted up of valve body 1 and being located on its outer wall that is provided with open-ended one end, and seal groove 13 is located between oil inlet 12 and oil-out 41, and simultaneously, be provided with sealing washer 131 in the seal groove 13, make install valve body 1 back on the high-pressure oil pump supporting with it, can separate through the oil feed chamber and the oil extraction chamber of the preceding high-pressure oil pump of sealing washer 131 in seal groove 13, make fluid can only get into from the oil inlet 12 of valve body 1, adjust the back through motion subassembly 3 and discharge from oil-out 41, the reliability of fluid flow control has been guaranteed, structural design is more reasonable.

The fuel metering valve with the structure easy to assemble provided by the embodiment comprises a valve body 1, an electromagnetic component 2 and a moving component 3, wherein an inner cavity 11 of the valve body 1, the outer part of which is sleeved with the electromagnetic component 2, is arranged into a straight cylinder with an opening at one end, an adjusting valve cover 4 is detachably connected on the opening, in addition, the moving component 3 is arranged into a cylindrical integrated structure, one end is a valve core part 31, the other end is an armature part 32, the moving component 3 is provided with a central hole 33 penetrating through two ends of the moving component and an oil guide hole 34 communicating with the central hole 33, and a spring 5 tightly abutted against the moving component 3 is arranged in the inner cavity 11, so that during assembly, only the spring 5 is required to be placed in the inner cavity 11, the moving component 3 is directly inserted into the inner cavity 11 from the end with the opening of the valve body 1, and the adjusting valve cover 4 is installed, the installation steps are, the fuel metering valve is easier to assemble, and the manufacturing efficiency of the fuel metering valve is effectively improved.

The above is only a preferred embodiment of the present invention, and not intended to limit the scope of the invention, and it should be appreciated by those skilled in the art that various equivalent substitutions and obvious changes made in the specification and drawings should be included within the scope of the present invention.

Claims (10)

1. A fuel metering valve with an easily assembled structure comprises a valve body, an electromagnetic assembly and a motion assembly, and is characterized in that the valve body is provided with a straight cylindrical inner cavity with an opening at one end, an adjusting valve cover detachably connected with the opening of the valve body is arranged on the opening of the valve body, an oil outlet communicated with the inner cavity is formed in the adjusting valve cover, an oil inlet communicated with the inner cavity is formed in the side wall of the valve body at the end with the opening, the electromagnetic assembly is sleeved outside the valve body and is positioned at the end without the opening of the valve body, the motion assembly is of a cylindrical integrated structure, one end of the motion assembly is a valve core part, the other end of the motion assembly is an armature part, the motion assembly is slidably arranged in the inner cavity, the armature part of the motion assembly is positioned at the end of the valve body where the electromagnetic assembly is arranged, and the valve core part of the motion assembly is positioned at the end with, and a spring abutting against the armature portion is arranged at the end portion of the armature portion in the inner cavity and located on the moving assembly, a central hole penetrating through end faces of two ends of the moving assembly is formed in the moving assembly along the axial direction of the moving assembly, an oil guide hole communicated with the central hole is formed in one end of the moving assembly located on the valve core portion along the radial direction of the moving assembly, and the oil guide hole corresponds to the oil inlet.

2. A structurally easy to assemble fuel metering valve as set forth in claim 1 wherein said regulator valve cap is threadably connected to said valve body.

3. A fuel metering valve with an easily assembled structure as set forth in claim 1, wherein a ring-shaped oil guide groove is formed in a region of the side wall of the moving assembly, which is located at the oil guide hole, and an end of the oil guide hole, which faces away from the central hole, communicates with the oil guide groove, while the oil guide groove communicates with the oil inlet.

4. A fuel metering valve with an easily assembled structure as set forth in claim 1, wherein said central hole is a variable cross-section hole, said central hole is divided into a valve core section located at said valve core portion and an armature section located at said armature portion, a bore diameter of said valve core section is larger than a bore diameter of said armature section, and said oil guide hole is communicated with said valve core section.

5. A fuel metering valve with an easily assembled structure as set forth in claim 4, wherein a spring positioning hole is formed in the moving component at an end of the armature portion, and the spring positioning hole is coaxially disposed with the armature section of the central hole, and the diameter of the spring positioning hole is larger than that of the armature section of the central hole, and a step is formed between the spring positioning hole and the armature section of the central hole, and one end of the spring abutting against the armature portion is inserted into the spring positioning hole and abuts against the step.

6. A fuel metering valve with an easily assembled structure as set forth in claim 1, wherein a fitting hole is formed in a bottom wall of the inner chamber of the valve body at an end thereof facing away from the opening, and an end of the spring facing away from the armature portion is inserted into the fitting hole.

7. A fuel metering valve with an easily assembled structure as set forth in claim 1, wherein a ring-shaped vent groove is further formed in an outer wall of said moving assembly, and a vent hole having one end communicating with said central hole and the other end communicating with said vent groove is formed in said moving assembly in a radial direction thereof.

8. A structurally easy to assemble fuel metering valve as set forth in claim 1 wherein said outlet port in said regulator valve cap is disposed directly opposite said central bore in said moving assembly and said outlet port is located on an axis extension of said central bore.

9. A fuel metering valve with an easily assembled structure as set forth in claim 3 wherein said oil inlet openings of said valve body are provided in plural numbers and said oil inlet openings are distributed in an annular array on a side wall of said valve body, and said oil guide openings of said moving assembly are also provided in plural numbers and said oil guide openings are also distributed in an annular array on a side wall of said moving assembly, each of said oil guide openings communicating with said oil guide groove.

10. The fuel metering valve with the structure easy to assemble as set forth in claim 1, wherein a circle of sealing groove is formed in an outer wall of the valve body at one end provided with the opening, the sealing groove is located between the oil inlet and the oil outlet, and a sealing ring is arranged in the sealing groove.

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