A spring-loaded pressure regulating mechanism for an injector control valve

Abstract

This invention provides a spring-opening pressure regulating mechanism for an injector control valve, relating to the field of injector control valve technology. It includes an injector body and a main outer sleeve. An injector housing is mounted on the surface of the injector body. The injector body includes a control valve stem, a control valve seat, a pressure regulating spring, an adjusting pad, a locking pad, an open sleeve, and the injector housing. By using a locking pad to fix the open sleeve in the annular groove on the upper part of the control valve stem, it ensures that the lower end of the pressure regulating spring is stably fixed to the adjusting pad above the locking pad during operation. This eliminates the upward and downward tilting and tilting phenomena of the pressure regulating spring during operation, ensuring consistent spring pressure transmission in the control valve components. By applying this spring-opening pressure regulating assembly to a static, leak-free injector body, the return oil volume of the injector body assembly during operation is reduced by more than 50% compared to a conventional injector body assembly.

Description

Technical Field

[0001] This invention belongs to the technical field of fuel injector control valves, and more specifically, relates to a spring-loaded pressure regulating mechanism for fuel injector control valves. Background Technology

[0002] Marine diesel engines are the main propulsion or power source for ships (military and civilian), surface and underwater vessels, and special vessels (coast guard, maritime surveillance, fisheries administration, anti-smuggling, marine research). The manufacturing technology of marine medium- and high-speed high-power diesel engines is extremely complex, with core component technologies, such as the high-pressure common rail electronic fuel injection system, being particularly crucial. These engines not only require high performance but also must ensure safety and reliability. They act like the "heart" of the engine, delivering fuel at pressures up to 180 MPa to the engine cylinders with extremely precise timing and metering control, thus achieving a highly efficient working process. Their characteristics include high power, good performance, energy saving, and emission reduction, aligning with national development goals and making them irreplaceable by any other thermal engine, including gasoline engines.

[0003] In traditional fuel injectors, the components used to fix and support the pressure regulating spring are typically open elastic washers with a thickness of about 0.6 mm. These washers are prone to detachment and tilting, leading to unstable pressure transmission during operation. This affects the consistency of the injector's opening and closing, causing changes in the diesel engine's fuel consumption pattern and deteriorating its power, fuel consumption, emissions, and ride comfort. Furthermore, these thin washers are prone to breakage during injector operation, causing complete injector failure. In addition, their poor manufacturability increases the manufacturing cost of the injector.

[0004] Regarding the overall structure of fuel injectors, traditional control valve stem annular grooves have small diameters and insufficient strength, making them prone to breakage during operation. This affects the reliability of the fuel injector assembly. Furthermore, effective protection and maintenance measures have been lacking when fuel injectors are not in use. The injector housing and nozzles are easily exposed to the external environment when idle, making them susceptible to rust and corrosion, which affects the injector's performance and lifespan. Moreover, the use of maintenance oil often results in leaks and waste, which is neither economical nor safe. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a spring-loaded pressure regulating mechanism for an injector control valve.

[0006] A spring-loaded pressure regulating mechanism for a fuel injector control valve includes an injector body and a main outer sleeve. An injector housing is mounted on the surface of the injector body. The injector body includes a control valve stem, a control valve seat, a pressure regulating spring, an adjusting washer, a locking washer, an opening sleeve, and the injector housing. The opening sleeve is disposed outside the control valve stem. A fuel injector nozzle is disposed at the end of the control valve stem, protruding from the injector housing. The locking washer is fixedly mounted on the opening sleeve, and the adjusting washer is mounted on the locking washer, and the adjusting washer is used to adjust the preload of the pressure regulating spring. The pressure regulating spring is mounted on the adjusting pad. The pressure regulating spring, adjusting pad, locking pad, and opening sleeve constitute the control valve spring opening pressure regulating component. The control valve spring opening pressure regulating component is assembled with the control valve seat to form a control valve assembly. The main outer sleeve is fitted over the end of the injector housing. A first collar is provided below the main outer sleeve. A sponge collar is provided inside the first collar. At least two sponge strips are provided on the inner wall of the sponge collar. At least two sponge blocks are fixedly installed on the bottom of the inner side of the sponge collar. The injector nozzle is inserted into the inside of the sponge collar.

[0007] Preferably, there are two opening sleeves, and the two opening sleeves are symmetrically installed on the control valve stem. The surface of the control valve stem has an annular groove. The opening sleeve is installed inside the annular groove of the control valve stem. The lower end face of the opening sleeve is in close contact with the bottom of the annular groove. The injector housing is covered with a protective shell. The main outer shell is located below the protective shell. Two sealing sleeves are slidably installed on the top of the main outer shell.

[0008] Preferably, a first rod is fixedly installed on the top of each of the two sealing sleeves, and a lower fixing sleeve is fixedly installed on the top of each side of the main outer sleeve. A miniature spring is fixedly installed between each of the two first rods and the lower fixing sleeve. The main outer sleeve is fitted over the first collar, and a third collar is fitted inside the first collar. A second collar is installed between the first collar and the third collar. A second sealing ring is fixedly installed between the top of the second collar and the third collar. At least two rectangular grooves are opened through the side wall of the third collar, and a cotton oil pad is fixedly installed in each rectangular groove.

[0009] Preferably, a first sealing ring is fixedly installed between the top of the third sleeve ring and the outer wall of the sponge sleeve ring. At least two extrusion sleeves are fixedly installed on the side wall of the sponge sleeve ring, and the rectangular grooves opened by each extrusion sleeve and the third sleeve ring are staggered. At least two rubber pads are fixedly installed in a ring on the inner wall of the sponge sleeve ring, and each rubber pad is located inside the arc-shaped sponge strip. An arc-shaped sponge strip is fixedly installed on the side wall of each arc-shaped sponge strip. A groove is opened on the top of each sponge block, and a conical sponge block is fixedly installed inside the groove. The side wall of the fuel injector is in contact with multiple sponge strips and arc-shaped sponge strips, and the end of the fuel injector is in contact with multiple grooves and conical sponge blocks.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] In this invention, by using a locking pad to fix the open sleeve in the annular groove on the upper part of the control valve stem, it is ensured that the lower end of the pressure regulating spring is firmly attached to the adjusting pad on the locking pad during the operation of the injector body. The pressure regulating spring eliminates the phenomenon of up-and-down tilting and tilting during operation, ensuring the consistency of spring pressure transmission in the control valve component. The traditional structure uses an open elastic pad with a thickness of about 0.6mm, which is fastened in the annular groove on the upper part of the control valve stem by a certain elastic deformation. This structure is prone to falling off and tilting, resulting in irregular pressure changes of the pressure regulating spring during the operation of the injector body. This affects the consistency of the injector body's opening and closing, causing the injector body to supply fuel to the diesel engine in a regular manner, resulting in the deterioration of diesel engine power, fuel consumption, emissions, comfort and other performance. On the other hand, the traditional open elastic pad is too thin and is prone to breakage during the operation of the injector body, leading to the complete failure of the injector body. At the same time, the traditional open elastic pad has poor processing technology, which increases the manufacturing cost of the injector body.

[0012] In this invention, by adopting a double-sided open sleeve structure, the diameter of the control valve stem annular groove can be increased to 3mm, while the diameter of the annular groove in the traditional structure is only 2.2mm. This significantly improves the strength of the control valve stem, prevents the control valve stem from breaking during the operation of the injector body, and ensures the reliability of the injector body assembly.

[0013] In this invention, by applying the control valve spring opening pressure regulating component to the static leak-free injector body, the amount of oil return during the operation of the injector body assembly is reduced by more than 50% compared to the conventional injector body assembly. Due to the reduction in the amount of oil return, the power loss caused by the diesel engine high-pressure oil pump outputting more fuel and the diesel engine cooling more fully is reduced, effectively improving the effective output power of the diesel engine.

[0014] In this invention, when the injector housing and injector body are not in use, the injector housing and injector body are placed inside a protective shell, and the ends of the injector housing and the injector nozzle are covered by a main outer sleeve, a first collar, and a support sleeve. The end of the injector nozzle is located inside the sponge collar, and the second collar absorbs WD-40 (light lubricating oil). WD-40 enters the sponge collar and comes into contact with the surface of the injector nozzle. It can clean and form a protective film on the surface of the injector nozzle to prevent rust and corrosion.

[0015] In this invention, when the fuel injector is inserted into the sponge collar, the sponge collar expands outward under the pressure of the fuel injector. The force on the sponge collar is transmitted to the compression sleeve, and the force on the compression sleeve is transmitted to the third collar. The third collar compresses the second collar, and the WD-40 inside the second collar enters between the sponge collar and the compression sleeve through the rectangular groove opened in the third collar. The sponge collar absorbs the WD-40. Since the outer wall of the fuel injector is in close contact with the sponge collar, the sponge collar can play a good maintenance role for the fuel injector and effectively prevent the fuel injector from rusting when it is not used for a long time.

[0016] In this invention, the injector housing is rotated as a whole, which causes the end of the injector nozzle to rotate. The injector nozzle rotates inside the sponge collar, and the rotation of the injector nozzle will contact multiple arc-shaped sponge strips. Multiple rubber pads and sponge strips support the arc-shaped sponge strips, and multiple arc-shaped sponge strips scrape the surface of the injector nozzle, effectively ensuring that the surface of the injector nozzle is filled with WD-40, while keeping the surface of the injector nozzle clean and avoiding the appearance of impurities.

[0017] In this invention, after the fuel injector is inserted into the sponge collar, the end of the fuel injector contacts multiple sponge blocks. Grooves are provided on the top of the multiple sponge blocks, so the grooves are filled with WD-40. At the same time, the end of the conical sponge block supports the end of the fuel injector, effectively ensuring the lubrication of the end of the fuel injector, further protecting the fuel injector, and effectively improving the fuel injector's ability to be stored when not in use.

[0018] In this invention, by absorbing WD-40 with the second ring, leakage of WD-40 during the removal of the injector housing is effectively prevented. Simultaneously, a cotton oil pad is placed within the rectangular groove of the third ring, allowing WD-40 to be indirectly transferred to the sponge ring after discharge, preventing liquid leakage and significantly improving the safety of WD-40 use. After the injector nozzle is pulled out, two miniature springs use their elasticity to bring the two sealing sleeves closer together, and the side walls of the two sealing sleeves magnetically attract each other. At this point, the two sealing sleeves seal the ends of the main and outer sleeves, effectively preventing WD-40 leakage and facilitating subsequent recycling. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the injector housing structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the fuel injector structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the main outer casing structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the first sealing ring structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the first ring structure of the present invention;

[0024] Figure 6 This is a schematic diagram of the extrusion sleeve structure of the present invention;

[0025] Figure 7 This is the present invention. Figure 6 A magnified structural diagram at point B;

[0026] Figure 8 This is a schematic diagram of the overall structure of the injector body of the present invention;

[0027] Figure 9 This is the present invention. Figure 8 A magnified structural diagram at point A;

[0028] Figure 10 This is a schematic diagram of the open sleeve structure of the present invention.

[0029] In the diagram, the correspondence between the component names and the attached drawing numbers is as follows: 1. Control valve stem; 11. Control valve seat; 12. Pressure regulating spring; 13. Adjusting shim; 14. Locking shim; 15. Opening sleeve; 16. Injector housing; 17. Injector nozzle; 18. Protective shell; 2. Main outer sleeve; 21. Sealing sleeve; 22. First rod; 23. Miniature spring; 24. Lower fixing sleeve; 25. First collar; 26. Support sleeve; 28. Second collar; 29. ​​Third collar; 3. Cotton oil pad; 31. First sealing ring; 32. Sponge collar; 33. Compression sleeve; 35. Sponge strip; 36. Rubber pad; 37. Arc-shaped sponge strip; 39. Sponge block; 4. Groove; 41. Conical sponge block; 42. Second sealing ring; 5. Injector body. Detailed Implementation

[0030] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0031] Please see Figure 1-10This invention provides a spring-loaded pressure regulating mechanism for an injector control valve, comprising an injector body 5 and a main outer sleeve 2. An injector housing 16 is mounted on the surface of the injector body 5. The injector body 5 includes a control valve stem 1, a control valve seat 11, a pressure regulating spring 12, an adjusting pad 13, a locking pad 14, an opening sleeve 15, and the injector housing 16. The opening sleeve 15 is disposed outside the control valve stem 1. An injector nozzle 17 is disposed at the end of the control valve stem 1, protruding from the injector housing 16. The locking pad 14 is fixedly mounted on the opening sleeve 15. The adjusting pad 13 is mounted on the locking pad 14 and is used to adjust the preload of the pressure regulating spring 12. The pressure regulating spring 12 is mounted on the adjusting pad 13. The pressure regulating spring 12 and the adjusting pad 13... The locking washer 14 and the opening sleeve 15 form the control valve spring opening pressure adjustment component. The control valve spring opening pressure adjustment component and the control valve seat 11 are assembled to form the control valve assembly. The main outer sleeve 2 is sleeved on the end of the injector housing 16. The first sleeve 25 is provided below the main outer sleeve 2. The inside of the first sleeve 25 is provided with a sponge sleeve 32. The inner wall of the sponge sleeve 32 is provided with at least two sponge strips 35. At least two sponge blocks 39 are fixedly installed on the bottom of the inner side of the sponge sleeve 32. The injector nozzle 17 is inserted into the inside of the sponge sleeve 32 to solve the consistency of opening and closing of the injector during operation, so as to provide diesel engine fuel in a precise time and quantity. The control valve assembly precisely controls the opening and closing of fuel injection in the injector and is a key control component in the injector assembly.

[0032] Two open sleeves 15 are symmetrically installed on the control valve stem 1. An annular groove is formed on the surface of the control valve stem 1. The open sleeves 15 are installed inside the annular groove of the control valve stem 1, with the lower end face of the open sleeve 15 in close contact with the bottom of the annular groove. A protective shell 18 is fitted over the injector housing 16. The main outer shell 2 is located below the protective shell 18. Two sealing sleeves 21 are slidably installed on the top of the main outer shell 2, ensuring that the lower end of the pressure regulating spring 12 is firmly fixed on the adjusting pad 13 during operation of the injector body 5. The pressure regulating spring 12 eliminates the phenomenon of up-and-down swaying and tilting during operation, ensuring the consistency of spring pressure transmission in the control valve assembly. The mounting annular groove of the control valve stem 1 has a large diameter, high strength, is not easy to break, and has high reliability. By adopting the double-sided open sleeve 15 structure, the diameter of the annular groove of the control valve stem 1 can be increased to 3mm, while the diameter of the annular groove in the traditional structure is only 2.2mm. This greatly improves the strength of the control valve stem 1 and prevents the control valve stem 1 from breaking during operation of the injector body 5, thus ensuring the reliability of the injector body 5 assembly.

[0033] A first rod 22 is fixedly installed on the top of each of the two sealing sleeves 21, and a lower fixing sleeve 24 is fixedly installed on the top of each of the two sides of the main outer sleeve 2. A miniature spring 23 is fixedly installed between each of the two first rods 22 and the lower fixing sleeve 24. When the user rotates the injector housing 16 as a whole, the rotation of the injector housing 16 causes the end of the injector nozzle 17 to rotate. The injector nozzle 17 rotates inside the sponge collar 32, and the rotation of the injector nozzle 17 will contact multiple arc-shaped sponge strips 37. Multiple rubber pads 36 and sponge strips 35 apply pressure to the arc-shaped sponge strips 37. Support, multiple arc-shaped sponge strips 37 scrape the surface of the fuel injector 17, the main outer sleeve 2 is fitted over the first sleeve ring 25, the inside of the first sleeve ring 25 is fitted with a third sleeve ring 29, a second sleeve ring 28 is installed between the first sleeve ring 25 and the third sleeve ring 29, a second sealing ring 42 is fixedly installed between the top of the second sleeve ring 28 and the third sleeve ring 29, at least two rectangular grooves are opened through the side wall of the third sleeve ring 29, and a cotton oil pad 3 is fixedly installed in each rectangular groove, and a support sleeve 26 is fixedly installed at the lower end of the first sleeve ring 25.

[0034] A first sealing ring 31 is fixedly installed between the top of the third ring 29 and the outer wall of the sponge ring 32. At least two extrusion sleeves 33 are fixedly installed on the side wall of the sponge ring 32, and the rectangular grooves opened by each extrusion sleeve 33 and the third ring 29 are staggered. At least two rubber pads 36 are fixedly installed in a ring on the inner wall of the sponge ring 32, and each rubber pad 36 is located inside the arc-shaped sponge strip 37. An arc-shaped sponge strip 37 is fixedly installed on the side wall of each arc-shaped sponge strip 37. A groove 4 is opened on the top of each sponge block 39, and a conical sponge block 41 is fixedly installed inside each groove 4. The side wall of the fuel injector 17 contacts multiple sponge strips 35 and arc-shaped sponge strips 37, and the end of the fuel injector 17 contacts multiple grooves 4 and conical sponge blocks 41.

[0035] Working principle:

[0036] In the first step, this invention uses a locking pad 14 to fix the open sleeve 15 in the annular groove on the upper part of the control valve stem 1. This ensures that the lower end of the pressure regulating spring 12 is firmly attached to the adjusting pad 13 on the locking pad 14 during the operation of the injector body 5. The pressure regulating spring 12 eliminates the phenomenon of up-and-down swaying and tilting during operation, ensuring the consistency of spring pressure transmission in the control valve component. The traditional structure uses an open elastic pad with a thickness of about 0.6mm, which is fastened in the annular groove on the upper part of the control valve stem 1 by a certain elastic deformation. This structure is easy to fall off and tilt, resulting in irregular pressure changes of the pressure regulating spring 12 during the operation of the injector body 5. This affects the consistency of the opening and closing of the injector body 5, causing the fuel supplied by the injector body 5 to change regularly, resulting in deterioration of the diesel engine's power, fuel consumption, emissions, comfort and other performance characteristics. On the other hand, the traditional open elastic pad is too thin and is easy to break during the operation of the injector body 5, resulting in the complete failure of the injector body 5. At the same time, the traditional open elastic pad has poor processing technology, which increases the manufacturing cost of the injector body 5.

[0037] In this invention, by adopting a double-sided open sleeve 15 structure, the diameter of the annular groove of the control valve stem 1 can be increased to 3mm, while the diameter of the annular groove in the traditional structure is only 2.2mm. This significantly improves the strength of the control valve stem 1 and prevents the control valve stem 1 from breaking during the operation of the injector body 5, thus ensuring the reliability of the injector body 5 assembly.

[0038] In this invention, by applying the control valve spring opening pressure regulating component to the static leak-free injector body 5, the amount of oil return in the injector body 5 assembly during operation is reduced by more than 50% compared to the conventional injector body 5 assembly. Due to the reduction in the amount of oil return, the power loss caused by the diesel engine high-pressure oil pump outputting more fuel and the diesel engine being fully cooled is reduced, effectively improving the effective output power of the diesel engine.

[0039] The second step involves placing the injector housing 16 and the injector body 5 entirely within the protective housing 18 when they are not in use. The ends of both the injector housing 16 and the nozzle 17 are covered by the main outer sleeve 2, the first collar 25, and the support sleeve 26. The end of the nozzle 17 is located inside the sponge collar 32. The second collar 28 absorbs WD-40 (light lubricating oil), and WD-40 enters the sponge collar 32 and comes into contact with the surface of the nozzle 17. It can clean and form a protective film on the surface of the nozzle 17 to prevent rust and corrosion.

[0040] When the injector 17 is inserted into the sponge collar 32, the sponge collar 32 is squeezed outward by the injector 17. The force of the sponge collar 32 is transmitted to the compression sleeve 33, and the force of the compression sleeve 33 is transmitted to the third collar 29. The third collar 29 is squeezed by the force of the second collar 28. WD-40 inside the second collar 28 will enter between the sponge collar 32 and the compression sleeve 33 through the rectangular groove opened in the third collar 29. The sponge collar 32 absorbs WD-40. Since the outer wall of the injector 17 is in close contact with the sponge collar 32, the sponge collar 32 can play a good maintenance role for the injector 17 and effectively prevent the injector 17 from rusting when it is not used for a long time.

[0041] Before each use of the fuel injector 17, the user rotates the entire fuel injector housing 16. The rotation of the fuel injector housing 16 causes the end of the fuel injector 17 to rotate. The fuel injector 17 rotates inside the sponge collar 32, and the rotation of the fuel injector 17 will contact multiple curved sponge strips 37. Multiple rubber pads 36 and sponge strips 35 support the curved sponge strips 37. The multiple curved sponge strips 37 scrape the surface of the fuel injector 17, effectively ensuring that the surface of the fuel injector 17 is filled with WD-40, and at the same time, it can keep the surface of the fuel injector 17 clean and avoid the appearance of impurities.

[0042] After the fuel injector 17 is inserted into the sponge collar 32, the end of the fuel injector 17 contacts multiple sponge blocks 39. The multiple sponge blocks 39 have grooves 4 on their tops, so the grooves 4 are filled with WD-40. At the same time, the end of the conical sponge block 41 supports the end of the fuel injector 17, effectively ensuring the lubrication of the end of the fuel injector 17, further protecting the fuel injector 17, and effectively improving the fuel injector 17's ability to be stored when not in use.

[0043] Thirdly, by having WD-40 absorbed by the second collar 28, leakage of WD-40 is effectively prevented when the injector housing 16 is removed. Simultaneously, a cotton pad 3 is installed in the rectangular groove of the third collar 29, allowing WD-40 to be indirectly transferred to the sponge collar 32 after discharge, preventing liquid leakage and greatly improving the safety of WD-40 use. After the injector 17 is pulled out, the two miniature springs 23 use their elasticity to bring the two sealing sleeves 21 closer together, and the side walls of the two sealing sleeves 21 magnetically attract each other. At this time, the two sealing sleeves 21 seal the ends of the main outer sleeve 2, effectively preventing WD-40 leakage and facilitating subsequent recycling.

[0044] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A spring-loaded pressure regulating mechanism for an injector control valve, comprising an injector body (5) and a main outer sleeve (2), wherein an injector housing (16) is mounted on the surface of the injector body (5), characterized in that: The injector body (5) includes a control valve stem (1), a control valve seat (11), a pressure regulating spring (12), an adjusting pad (13), a locking pad (14), an opening sleeve (15), and an injector housing (16). The opening sleeve (15) is located outside the control valve stem (1), and an injector nozzle (17) is provided at the end of the control valve stem (1). The injector nozzle (17) protrudes outside the injector housing (16). The locking pad (14) is fixedly installed on the open sleeve (15), and the adjusting pad (13) is installed on the locking pad (14), and the adjusting pad (13) is used to adjust the preload of the adjusting spring (12); The pressure regulating spring (12) is mounted on the adjusting pad (13). The pressure regulating spring (12), the adjusting pad (13), the locking pad (14) and the opening sleeve (15) constitute the control valve spring opening pressure regulating component. The control valve spring opening pressure regulating component is assembled with the control valve seat (11) to form a control valve assembly. The main outer sleeve (2) is fitted over the end of the injector housing (16). A first collar (25) is provided below the main outer sleeve (2). A sponge collar (32) is provided inside the first collar (25). At least two sponge strips (35) are provided on the inner wall of the sponge collar (32). At least two sponge blocks (39) are fixedly installed on the bottom of the inner side of the sponge collar (32). The injector nozzle (17) is inserted into the sponge collar (32).

2. The spring-loaded pressure regulating mechanism for an injector control valve as described in claim 1, characterized in that, The number of the opening sleeves (15) is two, and the two opening sleeves (15) are symmetrically installed on the control valve stem (1).

3. The spring-loaded pressure regulating mechanism for an injector control valve as described in claim 2, characterized in that, The surface of the control valve stem (1) is provided with an annular groove, and the opening sleeve (15) is installed inside the annular groove of the control valve stem (1), with the lower end face of the opening sleeve (15) in close contact with the bottom of the annular groove.

4. The spring-loaded pressure regulating mechanism for an injector control valve as described in claim 1, characterized in that, The injector housing (16) is covered with a protective shell (18), and the main outer shell (2) is located below the protective shell (18). Two sealing sleeves (21) are slidably installed on the top of the main outer shell (2).

5. The spring-opening pressure adjusting mechanism for an injector control valve as described in claim 4, characterized in that, A first rod (22) is fixedly installed on the top of each of the two sealing sleeves (21), and a lower fixing sleeve (24) is fixedly installed on the top of both sides of the main outer sleeve (2). A miniature spring (23) is fixedly installed between the two first rods (22) and the lower fixing sleeves (24).

6. The spring-opening pressure adjusting mechanism for an injector control valve as described in claim 1, characterized in that, The main outer sleeve (2) is fitted over the first sleeve ring (25), and a third sleeve ring (29) is fitted inside the first sleeve ring (25). A second sleeve ring (28) is installed between the first sleeve ring (25) and the third sleeve ring (29), and a second sealing ring (42) is fixedly installed between the top of the second sleeve ring (28) and the third sleeve ring (29).

7. The spring-loaded pressure regulating mechanism for an injector control valve as described in claim 6, characterized in that, The side wall of the third ring (29) is provided with at least two rectangular grooves, and each rectangular groove is fixedly installed with a cotton oil pad (3).

8. The spring-loaded pressure regulating mechanism for an injector control valve as described in claim 7, characterized in that, A first sealing ring (31) is fixedly installed between the top of the third ring (29) and the outer wall of the sponge ring (32). At least two extrusion sleeves (33) are fixedly installed on the side wall of the sponge ring (32), and the rectangular grooves opened by each extrusion sleeve (33) and the third ring (29) are staggered.

9. The spring-opening pressure adjusting mechanism for an injector control valve as described in claim 1, characterized in that, At least two rubber pads (36) are fixedly installed on the inner wall of the sponge collar (32), and each rubber pad (36) is located inside the arc-shaped sponge strip (37). An arc-shaped sponge strip (37) is fixedly installed on the side wall of each arc-shaped sponge strip (37).

10. The spring-opening pressure adjusting mechanism for an injector control valve as described in claim 1, characterized in that, Each of the sponge blocks (39) has a groove (4) on its top, and a conical sponge block (41) is fixedly installed inside each of the grooves (4). The sidewall of the nozzle (17) is in contact with multiple sponge strips (35) and arc-shaped sponge strips (37), and the end of the nozzle (17) is in contact with multiple grooves (4) and conical sponge blocks (41).

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