Injection valve, engine and adjusting method

Abstract

The invention discloses an injection valve, an engine and an adjusting method, and belongs to the technical field of engines, the injection valve comprises a shell, a valve seat and a plugging piece, the shell is provided with a first containing cavity, an inlet and an outlet, and the inlet and the outlet communicate with the first containing cavity; the valve seat is arranged in the first containing cavity in a penetrating mode and connected with the shell in a sealed mode, the valve seat is provided with a plurality of first channels penetrating through the valve seat in the axial direction of the valve seat, and the first channels communicate with the outlet and can communicate with the inlet; a guide groove is formed in the peripheral side of the valve seat, and the guide groove communicates with at least part of the first channels; the blocking piece is arranged in the guide groove and can move in the direction perpendicular to the axial direction so as to block at least part of the first channels. According to the injection valve, the blocking piece capable of moving is arranged to block the first channel, so that the through-flow sectional area of the first channel is changed, the flow of fuel can be changed, and the injection valve can adapt to engines of different specifications and different working conditions.

Description

Technical Field

[0001] This application belongs to the field of engine technology, specifically relating to injection valves, engines, and adjustment methods. Background Technology

[0002] The injection valve is the actuator of a gas engine, responsible for injecting gaseous fuel into the combustion chamber or intake manifold to mix it thoroughly with air, ensuring efficient and stable combustion.

[0003] However, because different engines have different flow requirements for the injection valve, the injection valve cannot adjust the flow, making it difficult for the injection valve to be adapted to different engine models. Summary of the Invention

[0004] Objectives of this invention: This application provides an injection valve to solve the technical problem of flow regulation; another objective of this application is to provide an engine; yet another objective of this application is to provide a regulation method.

[0005] Technical solution: This application provides an injection valve, including: A housing having a first receiving cavity, an inlet, and an outlet, the inlet and the outlet communicating with the first receiving cavity; A valve seat is disposed in the first receiving cavity and is sealed to the housing. The valve seat has a plurality of first channels extending through the valve seat along the axial direction of the valve seat. The first channels communicate with the outlet and are capable of communicating with the inlet. The valve seat has a guide groove on its periphery, and the guide groove communicates with at least a portion of the plurality of first channels. A blocking element disposed in the guide groove, the blocking element being movable in a direction perpendicular to the axial direction to block at least a portion of a plurality of the first channels.

[0006] In some embodiments, the housing has a first adjustment hole that communicates with the guide groove.

[0007] In some embodiments, the injection valve further includes a first adjusting member, which passes through the first adjusting hole and is capable of contacting the sealing member and driving the sealing member to move in a direction perpendicular to the axial direction.

[0008] In some embodiments, the plugging member includes a plurality of plugging portions, which are spaced apart circumferentially along the valve seat, and the plugging portions contact the first adjusting member.

[0009] In some embodiments, the sealing member further includes an elastic portion connected to the side of the sealing portion opposite to the first adjusting member, the elastic portion being disposed between the two sealing portions and connected to the two sealing portions respectively.

[0010] In some embodiments, the sealing member has a positioning groove, and the first adjusting member passes through the positioning groove.

[0011] In some embodiments, the first adjusting member is capable of moving radially along the valve seat and causing the sealing member to move radially.

[0012] In some embodiments, the valve seat has the following axial features: A first surface, wherein the first surface has a plurality of first guide grooves, and in any two first guide grooves, one is arranged around the other. The second surface is opposite to the first surface along the axial direction. The second surface has a plurality of first guide holes facing the outlet. The first guide holes are connected to the first guide groove to form the first channel. The guide groove is connected to the first guide holes.

[0013] In some embodiments, the injection valve further includes: A valve core is disposed in the first receiving cavity and is capable of sealing the first channel; A limiting member is provided on the side of the valve core away from the valve seat. The limiting member has a second receiving cavity on the side of the valve core away from the axial direction. The limiting member also has a first through hole connecting the inlet and the second receiving cavity. A drive assembly includes a connector and a contact member passing through the limiting member. The connector is connected to the valve core and can drive the valve core to move axially closer to the limiting member and open the first channel. The contact member is connected to the connector and covers the second receiving cavity. A sealing element, which connects the limiting element and the connecting element and covers the second receiving cavity, is located on the side of the contact element near the valve core; A blocking member is connected to the limiting member. The blocking member is movable in a direction perpendicular to the axial direction and can be moved between the sealing member and the contact member.

[0014] In some embodiments, the housing has a second adjustment hole; The injection valve further includes a second adjusting member, which passes through the second adjusting hole. The second adjusting member can be connected to the blocking member and drive the blocking member to move in a direction perpendicular to the axial direction.

[0015] In some embodiments, the injection valve further includes an elastic element disposed between the valve core and the limiting element, and connected to the valve core and the limiting element respectively, the elastic element being used to push the valve core toward the valve seat.

[0016] In some embodiments, the injection valve further includes a magnetic shielding ring that surrounds the contact member and is connected to the side of the blocking member away from the limiting member along the axial direction.

[0017] Accordingly, this application also provides an engine including an injection valve as described in any of the above embodiments.

[0018] Accordingly, this application also provides a method for adjustment, comprising: Measure the flow rate q at the outlet; The sealing element is moved in a direction perpendicular to the valve seat axis so that the outlet flow rate q is equal to the first preset flow rate Q; Fix the first adjusting component.

[0019] In some embodiments, it also includes: The pressure difference between the import and export is limited to the first preset pressure difference; Power on the drive components and begin recording time; Once the driving component completes its action, the recording time ends, and the duration t is obtained. Compare duration t with the first preset time T; When the time t is greater than the first preset time T, the blocking component moves in a direction perpendicular to the valve seat axis; When the time duration t is less than or equal to the first preset time T, the second adjusting component is fixed.

[0020] Beneficial Effects: Compared with the prior art, the injection valve, engine, and adjustment method provided in this application include a housing, a valve seat, and a sealing member. The housing has a first receiving cavity, an inlet, and an outlet, with the inlet and outlet communicating with the first receiving cavity. The valve seat passes through the first receiving cavity and is sealed to the housing. The valve seat has multiple first channels penetrating the valve seat axially, with each first channel communicating with the outlet and also communicating with the inlet. The valve seat has a guide groove on its periphery, which communicates with at least a portion of the multiple first channels. The sealing member is disposed in the guide groove and is movable in a direction perpendicular to the axial direction to block at least a portion of the multiple first channels. This application, by providing a movable sealing member to block the first channels, changes the flow cross-sectional area at the first channels, thereby changing the fuel flow rate and enabling the injection valve to adapt to different engine specifications and different operating conditions. Attached Figure Description

[0021] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0022] Figure 1 A cross-sectional view of the injection valve provided in an embodiment of this application; Figure 2 When the sealing element of the injection valve in the embodiments of this application is in one position Figure 1 Detailed view of section A in the middle frame; Figure 3 This is a cross-sectional view of the injection valve provided in an embodiment of this application when the plug is in one position. Figure 4 When the sealing element of the injection valve in the embodiment of this application is in another position Figure 1 Detailed view of section A in the middle frame; Figure 5 A cross-sectional view of the injection valve at the injection valve location when the plug is in another position, as provided in an embodiment of this application; Figure 6 This is a cross-sectional view of the injection valve at the sealing element provided in an embodiment of this application; Figure 7 for Figure 1 Detailed view of section B in the middle frame; Figure 8 A flowchart illustrating the adjustment method provided in this application embodiment; Figure 9 A flowchart illustrating the adjustment method provided in this application embodiment.

[0023] Explanation of reference numerals in the attached figures: 100-Housing shell; 110-First receiving cavity; 120-Inlet; 130-Outlet; 140-First adjusting hole; 150-Second adjusting hole; 200-Valve seat; 210-First channel; 220-Guide groove; 230-First surface; 231-First guide groove; 240-Second surface; 241-First guide hole; 300-Blocking component; 310-Blocking part; 311-Positioning groove; 320-Elastic part; 400-Valve core; 410- Second channel; 411-Second guide groove; 412-Second guide hole; 420-Second through hole; 500-Limiting member; 510-Second receiving cavity; 520-First through hole; 600-Drive assembly; 610-Connector; 620-Contact member; 630-Third channel; 710-First adjusting member; 720-Second adjusting member; 730-Elastic member; 740-Magnetic shielding ring; 800-Sealing member; 900-Blocking member; X-Radial; Z-Axial. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for mutual communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically limited. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0026] The following disclosure provides many different implementations or examples for carrying out different structures of this application. To simplify the disclosure of this application, the components and arrangements of specific examples are described below. Of course, these are merely examples and are not intended to limit this application.

[0027] The terms "up" and "down" mentioned below refer to the directions shown in the accompanying drawings of the instruction manual.

[0028] The injection valve is the actuator of a gas engine, responsible for injecting gaseous fuel into the combustion chamber or intake manifold to mix it thoroughly with air, ensuring efficient and stable combustion.

[0029] However, because different engines have different flow requirements for the injection valve, the injection valve cannot adjust the flow, making it difficult for the injection valve to be adapted to different engine models.

[0030] To address the technical problem that injection valves cannot regulate flow, the first embodiment of this application provides an injection valve. Please refer to... Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The injection valve includes a housing 100, a valve seat 200, and a sealing element 300. The housing 100 has a first receiving cavity 110, an inlet 120, and an outlet 130, with the inlet 120 and outlet 130 communicating with the first receiving cavity 110. The valve seat 200 passes through the first receiving cavity 110 and is sealed to the housing 100. The valve seat 200 has a plurality of first channels 210 extending through the valve seat 200 along the axial direction Z. The first channels 210 communicate with the outlet 130 and can communicate with the inlet 120. The peripheral side of the valve seat 200 has a guide groove 220, which communicates with at least a portion of the plurality of first channels 210. The sealing element 300 is disposed in the guide groove 220 and can move in a direction perpendicular to the axial direction Z to block at least a portion of the plurality of first channels 210.

[0031] in, Figure 4 and Figure 5 The sealing component 300 in the middle seals the area of ​​the first channel 210 compared to Figure 2 and Figure 3 The sealing component 300 in the middle has a larger area for sealing the first channel 210, which makes the flow rate of the injection valve smaller.

[0032] Since the valve seat 200 is sealed to the housing, the fuel flowing into the first receiving cavity 110 from the inlet 120 can only flow through the first channel 210 to the outlet 130, and then out of the injection valve through the first outlet 130.

[0033] In some embodiments, a sealing ring is fitted around the periphery of the valve seat 200, and the sealing ring seals the connection between the valve seat 200 and the housing 100.

[0034] In some embodiments, the guide groove 220 is disposed around the valve seat 200 circumferentially. In some embodiments, the injection valve includes only one sealing member 300, which is capable of blocking multiple first channels 210. In some embodiments, the injection valve includes multiple sealing members 300, which are used to block multiple first channels 210. In some embodiments, the valve seat 200 has multiple guide grooves 220 on its circumferential side, which are spaced apart circumferentially around the valve seat 200, and each guide groove 220 contains at least one sealing member 300.

[0035] Firstly, in the above embodiments, since the guide groove 220 is connected to the first channel 210, the sealing member 300 disposed in the guide groove 220 can move to block the first channel 210, changing the flow cross-sectional area of ​​the fuel flowing through the first channel 210, and thus changing the flow rate of the fuel flowing out of the injection valve through the outlet 130, so that the injection valve can adapt to different engines and different operating conditions. Furthermore, by providing the guide groove 220, the movement direction of the sealing member 300 can also be restricted, and the sealing member 300 can be positioned along the axial direction Z, reducing the possibility of warping or tilting of the sealing member 300, interference between the end of the sealing member 300 and the edge of the first channel 210, and jamming of the sealing member 300.

[0036] Secondly, in the above embodiments, moving along a direction perpendicular to the axial direction Z can avoid the possibility of the sealing member 300 needing to overcome pressure difference when moving, reduce the driving force required by the sealing member 300 and the damping that needs to be overcome, and make the sealing member 300 respond faster and more flexibly.

[0037] Thirdly, in the above embodiments, setting multiple first channels 210 allows multiple first channels 210 to be opened and closed in groups or zones, further improving the adaptability of the injection valve.

[0038] It is understandable that the sealing component 300 does not need to completely block the first channel 210. It only needs to partially block the first channel 210 to change the flow cross-sectional area through which the fuel passes, thereby changing the fuel flow rate.

[0039] In some embodiments, the direction perpendicular to the axial direction Z is the radial direction X, meaning that the blocking member 300 can move closer to or further away from the central axis of the valve seat 200; in other embodiments, the direction perpendicular to the axial direction Z is a direction that forms an angle with the radial direction X.

[0040] In some embodiments, please refer to Figure 1 and Figure 2 The housing 100 has a first adjustment hole 140, which is connected to the guide groove 220.

[0041] In the above embodiment, by providing the first adjustment hole 140, the operator can drive or adjust the position of the sealing member 300 from the outside, thereby changing the flow cross-sectional area at the first channel 210 to change the flow rate of the injection valve.

[0042] In some embodiments, the injection valve further includes a plug that is connected to the housing 100 and blocks the first adjustment hole 140.

[0043] In some embodiments, please refer to Figure 1 and Figure 2The injection valve also includes a first adjusting member 710, which passes through the first adjusting hole 140. The first adjusting member 710 can contact the sealing member 300 and drive the sealing member 300 to move in a direction perpendicular to the axial direction Z.

[0044] In some embodiments, the first adjusting member 710 is a screw threadedly connected to the wall of the first adjusting hole 140. By rotating the first adjusting member 710, the length of the first adjusting member 710 extending into the first receiving cavity 110 is adjusted, thereby moving the sealing member 300 in a direction perpendicular to the axial direction Z. In other embodiments, the first adjusting member 710 is a push rod. By pushing and pulling the push rod, the length of the first adjusting member 710 extending into the first receiving cavity 110 is changed, thereby moving the sealing member 300 in a direction perpendicular to the axial direction Z.

[0045] In some embodiments, the position of the sealing element 300 is adjusted manually; in other embodiments, the sealing element 300 can be driven by a drive device to change its length extending into the first receiving cavity 110. The drive device can be a motor, a push rod, etc.

[0046] Firstly, in the above embodiments, by providing a first adjusting member 710 connected to the housing 100 to simultaneously realize the function of moving the sealing member 300 and sealing the first adjusting hole 140, the first adjusting hole 140 can always be in a sealed state. Thus, the injection valve can also have better sealing performance and improve the reliability of the injection valve by adjusting the part that can be inserted into the first adjusting hole 140 at a position that allows the sealing member 300 to be positioned.

[0047] Secondly, in the above embodiments, the first adjusting member 710 and the blocking member 300 transmit displacement through rigid contact, which can reduce gaps and hysteresis, form a more stable fit, and the reliability of the movement of the blocking member 300 is better.

[0048] Thirdly, in the above embodiments, by providing a first adjusting member 710 that passes through the first adjusting hole 140, the displacement of the external driving device can directly act on the sealing member 300 in the guide groove 220, thereby achieving repeatable adjustment of the jet valve flow rate without stopping the machine.

[0049] In addition, the first adjustment element 710 is easy to integrate with the sensing and drive unit, supporting closed-loop control.

[0050] In some embodiments, please refer to Figure 3 and Figure 5 The sealing component 300 includes a plurality of sealing parts 310, which are arranged at intervals along the circumference of the valve seat 200, and the sealing parts 310 are in contact with the first adjusting component 710.

[0051] In the above embodiments, by providing multiple blocking parts 310 on the same blocking member 300, the multiple blocking parts 310 can correspond to multiple first flow channels of different groups. By selectively pushing one or more blocking parts 310, the opening and closing of zones can be realized, thereby refining the adjustment of the total flow area into graded or quasi-continuous steps, and improving the adjustment resolution and matching degree.

[0052] In addition, the multiple blocking parts 310 arranged at intervals along the circumference can symmetrically cover the multiple first channels 210, avoiding the possibility of jet deflection caused by unilateral blocking and improving the jet stability at low flow rates.

[0053] In some embodiments, the blocking portion 310 has a width along the radial direction X. In practical applications, the width of the blocking portion 310 along the radial direction X can be flexibly adjusted according to the required flow range. Please refer to [link to relevant documentation]. Figure 3 and Figure 6 , Figure 3 The width of the central sealing part 310 along the radial X direction is greater than Figure 6 The width of the central sealing part 310 along the radial direction X.

[0054] In some embodiments, please refer to Figure 3 and Figure 5 The sealing member 300 also includes an elastic part 320, which is connected to the side of the sealing part 310 away from the first adjusting member 710. The elastic part 320 is disposed between the two sealing parts 310 and is connected to the two sealing parts 310 respectively.

[0055] It is understood that in some embodiments, the first adjusting member 710 and the blocking part 310 are only in contact connection. The first adjusting member 710 can drive the blocking member 300 to move in the direction from the first adjusting member 710 to the blocking member 300, but cannot drive the blocking member 300 to move in the direction from the blocking member 300 to the first adjusting member 710. That is, after the first adjusting member 710 moves away from the blocking member 300, it will separate from the blocking member 300.

[0056] In the above embodiments, by providing and connecting elastic portions 320 between adjacent blocking portions 310, the adjacent blocking portions 310 achieve elastic linkage and self-resetting during adjustment, which reduces the return gap and improves the accuracy, symmetry, and reliability of flow regulation. Simultaneously, the elastic portions 320 provide pre-tightening and buffering, absorbing adjustment impacts, compensating for manufacturing and temperature tolerances, reducing wear and jamming, extending the service life of the mechanism, and reducing maintenance frequency and costs.

[0057] In some embodiments, please refer to Figure 3 and Figure 5 The sealing component 300 has a positioning groove 311, and the first adjusting component 710 passes through the positioning groove 311.

[0058] Specifically, the positioning groove 311 is provided on the side of the sealing part 310 facing the first adjustment hole 140.

[0059] It is understandable that the shell 100 is thinner and the first adjusting member 710 is longer. When the first adjusting member 710 is inserted into the first receiving cavity 110, it may tilt and move relative to the surface of the sealing member 300, which reduces the efficiency of the first adjusting member 710 in driving the sealing member 300 and causes the sealing member 300 to jam.

[0060] In the above embodiments, by providing a positioning groove 311 on the sealing member 300 for the first adjusting member 710 to pass through, the first adjusting member 710 obtains stable guidance and anti-eccentric support when driving the sealing member 300 to move laterally, thereby reducing the return clearance and wear, and improving the accuracy of flow regulation.

[0061] In some embodiments, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The first adjusting member 710 can move radially X along the valve seat 200 and drive the sealing member 300 to move radially X.

[0062] In the above embodiment, by designing the first adjusting member 710 to move radially X along the valve seat 200 and driving the blocking member 300 to move synchronously radially X, the adjusting direction is consistent with the blocking direction, thereby simplifying the structure and improving the adjusting efficiency and response speed.

[0063] Furthermore, the radial X-arrangement adjustment method facilitates external access and operation of the adjustment components, improving the maintainability and automation integration capability of the injection valve in practical applications.

[0064] In some embodiments, please refer to Figure 1 , Figure 2 and Figure 4 The valve seat 200 has a first surface 230 and a second surface 240 along the axial direction Z. The first surface 230 has a plurality of first guide grooves 231, in which any two first guide grooves 231 are arranged around the other. The second surface 240 is opposite to the first surface 230 along the axial direction Z. The second surface 240 has a plurality of first guide holes 241. The first guide holes 241 face the outlet 130. The first guide holes 241 are connected to the first guide grooves 231 and form a first channel 210. The guide groove 220 is connected to the first guide holes 241.

[0065] Specifically, by providing mutually surrounding first guide grooves 231 on the first surface 230 of the valve seat 200 and providing first guide holes 241 facing the outlet 130 on the opposite second surface 240, the first guide grooves 231 and the first guide holes 241 are connected to form a layered first channel 210, which can uniformly distribute the fluid in the circumferential direction, reduce cavitation, and improve the symmetry and stability of the injection.

[0066] In the above embodiment, the first guide groove 220 is directly connected to the first guide hole 241, so that the blocking effect of the sealing member 300 has an immediate and sensitive impact on the flow cross-sectional area, and realizes a fast-response adjustable flow rate.

[0067] In addition, in order to obtain better uniformity, the number of first guide grooves 220 is relatively large. Correspondingly, the number of groove walls of the first guide grooves 220 is relatively large, and more than the number of holes of the first guide hole 241. This makes the guide grooves 220 connected to the first guide hole 241, which can reduce the possibility of interference caused by the sealing component 300 colliding with the hole wall or groove wall when it moves, and make the sealing component 300 more reliable.

[0068] In some embodiments, please refer to Figure 1 and Figure 7 The injection valve also includes a valve core 400, a limiting member 500, a drive assembly 600, a sealing member 800, and a blocking member 900. The valve core 400 is disposed in the first receiving cavity 110 and can cover the first channel 210. The limiting member 500 is disposed on the side of the valve core 400 away from the valve seat 200. The side of the limiting member 500 away from the valve core 400 along the axial direction Z has a second receiving cavity 510. The limiting member 500 also has a first through hole 520 connecting the inlet 120 and the second receiving cavity 510. The drive assembly 600 includes a connecting member 610 and a contact member 620 passing through the limiting member 500. The connector 610 is connected to the valve core 400 and can drive the valve core 400 to move closer to the limiting member 500 along the axial direction Z, and open the first channel 210; the contact member 620 is connected to the connector 610 and covers the second receiving cavity 510; the sealing member 800 connects the limiting member 500 and the connector 610 and covers the second receiving cavity 510, and the sealing member 800 is located on the side of the contact member 620 close to the valve core 400; the blocking member 900 is connected to the limiting member 500 and can move in a direction perpendicular to the axial direction Z, and can move between the sealing member 800 and the contact member 620.

[0069] In some embodiments, the drive assembly 600 is an armature assembly, and the electromagnet in the injection valve can provide driving force for the drive assembly 600. Specifically, when the drive assembly 600 is energized, it moves upward, the valve core 400 moves away from the valve seat 200, and the inlet 120 communicates with the first channel 210; when the drive assembly 600 is de-energized, it falls downward, the valve core 400 contacts the valve seat 200, the valve core 400 blocks the first guide groove 231, and the inlet 120 is blocked from the first channel 210.

[0070] Understandably, please refer to Figure 1 and Figure 7 The drive assembly 600 has a third channel 630 that extends through the drive assembly 600 along the Z-axis and connects to the outlet 130. The air pressure at the outlet 130 exerts a force on the upper surface of the contact member 620. The second receiving cavity 510 connects to the inlet 120, and the pressure in the second receiving cavity 510 causes the seal 800 to undergo elastic deformation, exerting a force on the lower surface of the contact member 620. The forces acting on the upper and lower surfaces form a composite force pointing upwards from the lower surface, which, in conjunction with the driving force provided by the electromagnet to the drive assembly 600, moves the valve core 400.

[0071] In the above embodiments, by setting a blocking member 900 so that the blocking member 900 can move between the sealing member 800 and the contact member 620, the upward force of the sealing member 800 on the contact member 620 is limited, thereby adjusting the pressure difference on the contact member 620, realizing dynamic control of the electromagnetic drive sensitivity, and improving the adaptability, stability and control accuracy of the system under different pressure conditions.

[0072] For example, after the blocking member 300 moves away from the central axis, the flow rate of the injection valve increases, the force on the upper surface of the contact member 620 increases, and the blocking member 900 also moves away from the central axis, so that the lower surface of the contact member 620 can be subjected to a greater force, thereby balancing the force on the upper surface of the contact member 620, so that the drive assembly 600 maintains the same sensitivity under the same driving force.

[0073] In some embodiments, the valve core 400 has a second channel 410 that connects the second receiving cavity 510 and the inlet 120.

[0074] Specifically, the valve core 400 has multiple second guide grooves 411 on the side facing the valve seat 200. In two adjacent second guide grooves 411, one surrounds the other. The second guide grooves 411 are offset from the first guide groove 231. When the valve core 400 is connected to the valve seat 200, the valve seat 200 covers the second guide grooves 411, and the valve core 400 covers the first guide groove 231. The circumference of the valve core 400 has multiple second guide holes 412, which are spaced Z-spaced along the axial direction. The second guide holes 412 communicate with the second guide grooves 411 to form a second channel 410. The valve core 400 also has a second through hole 420, located on the side of the valve core 400 facing the limiting member 500. The second through hole 420 communicates with the second guide holes 412, allowing fuel to flow from the second through hole 420 to the first through hole 520.

[0075] In some embodiments, please refer to Figure 1 and Figure 7 The housing 100 has a second adjustment hole 150; the injection valve also includes a second adjustment member 720, which passes through the second adjustment hole 150. The second adjustment member 720 can be connected to the blocking member 900 and drive the blocking member 900 to move in a direction perpendicular to the axial direction Z.

[0076] In the above embodiment, by providing a second adjustment hole 150 on the housing 100 and configuring a second adjustment member 720 passing through it, the blocking member 900 can be moved by external drive in a direction perpendicular to the axial direction Z, thereby achieving rapid and precise adjustment of the position of the blocking member 900 without disassembling the housing 100.

[0077] In some embodiments, the blocking member 900 may be movable in the radial direction X.

[0078] Secondly, the introduction of the second adjusting member 720 allows the blocking member 900 to be controllably inserted or withdrawn between the sealing member 800 and the contact member 620, thereby adjusting the upper and lower pressure difference on the contact member 620, realizing dynamic control and working condition adaptation of the electromagnetic drive sensitivity, and improving the response performance and control flexibility of the injection valve.

[0079] In some embodiments, please refer to Figure 1 The injection valve also includes an elastic element 730, which is disposed between the valve core 400 and the limiting element 500 and is connected to the valve core 400 and the limiting element 500 respectively. The elastic element 730 is used to push the valve core 400 toward the valve seat 200.

[0080] In some embodiments, the two ends of the elastic member 730 along the axial direction Z are respectively provided in the first through hole 520 and the second through hole 420.

[0081] In the above embodiments, by setting the elastic element 730, the valve core 400 and the valve seat 200 can remain in contact when the drive assembly 600 does not receive driving force, thereby realizing the self-resetting and normally closed functions of the injection valve and improving the system's safety, response speed and energy efficiency ratio.

[0082] Secondly, in the above embodiments, the elastic element 730 can also form a buffer when the seal 800 applies a large force to the contact element 620, during the process of the valve core 400 moving towards the contact element 620, thereby reducing impact and wear and extending service life.

[0083] In some embodiments, please refer to Figure 1 The injection valve also includes a magnetic shielding ring 740, which surrounds the contact member 620 and is connected to the side of the blocking member 900 that is axially opposite to the limiting member 500.

[0084] In the above embodiment, the magnetic isolation ring 740 and the limiting member 500 are sandwiched on both sides of the blocking member 900, providing positioning support for the blocking member 900 and limiting the movement of the blocking member 900 in the axial Z direction, thereby improving the movement stability of the blocking member 900 and extending the service life of the mechanism.

[0085] In some embodiments, the structure of the blocking member 900 is the same as that of the sealing member 300. Specifically, the blocking member 900 includes a plurality of blocking portions and an elastic portion 320. The plurality of blocking portions are arranged circumferentially at intervals, and the elastic portion 320 is arranged circumferentially between two blocking portions and connects to the two blocking portions respectively. The side of the blocking portion away from the elastic portion 320 can be connected to the second adjusting member 720.

[0086] Accordingly, this application also provides an engine including an injection valve as described in any of the above embodiments.

[0087] Accordingly, this application also provides an adjustment method, please refer to [link / reference]. Figure 8 ,include: Measure the flow rate q at outlet 130; Move the sealing element 300 in the direction perpendicular to the axial direction Z of the valve seat 200 so that the flow rate q at the outlet 130 is equal to the first preset flow rate Q; Fix the first adjusting component 710.

[0088] Understandably, the degree to which the blocking component 300 obstructs the first channel 210 is changed by moving the blocking component 300, thereby altering the flow cross-sectional area. Specifically, when the required flow rate is small, the area obstructed by the blocking component 300 is increased, and the flow cross-sectional area is decreased; when the required flow rate is large, the area obstructed by the blocking component 300 is decreased, and the flow cross-sectional area is increased.

[0089] In some embodiments, the sealing element 300 moves radially X.

[0090] Wherein, the first preset flow rate Q is the flow rate required by the injection valve.

[0091] Specifically, fixing the first adjusting member 710 means limiting the specific position of the first adjusting member 710 and the housing 100, so as to fix the position of the sealing member 300 and prevent the flow rate from changing.

[0092] In some embodiments, the position of the first adjusting member 710 relative to the housing 100 is defined by welding, gluing, or adding a limiting member 500.

[0093] In some embodiments, please refer to Figure 9 It also includes: The pressure difference between the inlet (120) and outlet (130) is set to the first preset pressure difference. Power on the drive component 600 and start recording time; Once the driver component 600 completes its operation, the recording time ends, and the duration t is obtained. Compare duration t with the first preset time T; When the time length t is greater than the first preset time T, the blocking member 900 moves in the direction perpendicular to the axial direction Z of the valve seat 200. When the time length t is less than or equal to the first preset time T, the second adjusting component 720 is fixed.

[0094] The first preset pressure difference is the working pressure difference that the injection valve needs to cope with, that is, the working condition that the injection valve needs to cope with.

[0095] Specifically, when the time t is greater than the first preset time T, the blocking member 900 is adjusted so that the blocking member 900 is away from the central axis of the valve core 400, so that the sealing member 800 with a larger area can contact the contact member 620, thereby increasing the force on the lower surface of the contact member 620, and the drive assembly 600 can move upward more quickly after being contacted.

[0096] Specifically, fixing the second adjusting member 720 means limiting the specific position of the second adjusting member 720 and the housing 100, so as to fix the position of the blocking member 900 and prevent the pressure difference from changing.

[0097] In some embodiments, the position of the second adjusting member 720 relative to the housing 100 is defined by welding, gluing, or adding a limiting member 500.

[0098] The above provides a detailed description of an injection valve, engine, and adjustment method provided in the embodiments of this application. Specific examples have been used in this application to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A jet valve, characterized in that, include: The housing (100) has a first receiving cavity (110), an inlet (120) and an outlet (130) communicating with the first receiving cavity (110). A valve seat (200) is disposed in the first receiving cavity (110) and sealed to the housing (100). The valve seat (200) has a plurality of first channels (210) extending through the valve seat (200) along the axial (Z) direction of the valve seat (200). The first channels (210) communicate with the outlet (130) and are capable of communicating with the inlet (120). The valve seat (200) has a guide groove (220) on its circumference, and the guide groove (220) communicates with at least a portion of the plurality of first channels (210). A blocking element (300) is disposed in the guide groove (220) and is movable in a direction perpendicular to the axis (Z) to block at least a portion of the plurality of first channels (210).

2. The injection valve according to claim 1, characterized in that, The housing (100) has a first adjustment hole (140) which is connected to the guide groove (220).

3. The injection valve according to claim 2, characterized in that, The injection valve further includes a first adjusting member (710), which passes through the first adjusting hole (140). The first adjusting member (710) can contact the sealing member (300) and drive the sealing member (300) to move in a direction perpendicular to the axis (Z).

4. The injection valve according to claim 3, characterized in that, The sealing member (300) includes a plurality of sealing portions (310), which are spaced apart circumferentially along the valve seat (200) and the sealing portions (310) are in contact with the first adjusting member (710).

5. The injection valve according to claim 4, characterized in that, The sealing member (300) further includes an elastic part (320), which is connected to the side of the sealing part (310) away from the first adjusting member (710). The elastic part (320) is disposed between the two sealing parts (310) and is connected to the two sealing parts (310) respectively.

6. The injection valve according to claim 3, characterized in that, The sealing member (300) has a positioning groove (311), and the first adjusting member (710) passes through the positioning groove (311).

7. The injection valve according to claim 3, characterized in that, The first adjusting member (710) is capable of moving radially (X) along the valve seat (200) and driving the sealing member (300) to move radially (X).

8. The injection valve according to claim 1, characterized in that, The valve seat (200) has the following features along the axial direction (Z): A first surface (230) has a plurality of first guide grooves (231), wherein in any two first guide grooves (231), one is arranged around the other; The second surface (240) is opposite to the first surface (230) along the axial direction (Z). The second surface (240) has a plurality of first guide holes (241) facing the outlet (130). The first guide holes (241) are connected to the first guide groove (231) and form the first channel (210). The guide groove (220) is connected to the first guide holes (241).

9. The injection valve according to claim 1, characterized in that, The injection valve also includes: A valve core (400) is disposed in the first receiving cavity (110) and the valve core (400) is capable of sealing the first channel (210). A limiting member (500) is disposed on the side of the valve core (400) away from the valve seat (200). The limiting member (500) has a second receiving cavity (510) on the side of the valve core (400) away from the axial direction (Z). The limiting member (500) also has a first through hole (520) connecting the inlet (120) and the second receiving cavity (510). A drive assembly (600) includes a connector (610) and a contact (620) passing through the limiting member (500). The connector (610) is connected to the valve core (400) and can drive the valve core (400) to move axially (Z) closer to the limiting member (500) and open the first channel (210). The contact (620) is connected to the connector (610) and covers the second receiving cavity (510). A sealing element (800) connects the limiting element (500) and the connecting element (610) and covers the second receiving cavity (510). The sealing element (800) is located on the side of the contact element (620) near the valve core (400). A blocking member (900) is connected to the limiting member (500). The blocking member (900) is movable in a direction perpendicular to the axial direction (Z) and can be moved between the sealing member (800) and the contact member (620).

10. The injection valve according to claim 9, characterized in that, The housing (100) has a second adjustment hole (150); The injection valve also includes a second adjusting member (720), which passes through the second adjusting hole (150). The second adjusting member (720) can be connected to the blocking member (900) and drive the blocking member (900) to move in a direction perpendicular to the axis (Z).

11. The injection valve according to claim 9, characterized in that, The injection valve further includes an elastic element (730), which is disposed between the valve core (400) and the limiting element (500) and connects the valve core (400) and the limiting element (500) respectively. The elastic element (730) is used to push the valve core (400) toward the valve seat (200).

12. The injection valve according to claim 9, characterized in that, The injection valve also includes a magnetic shielding ring (740) which surrounds the contact member (620) and is connected to the side of the blocking member (900) away from the limiting member (500) along the axial direction (Z).

13. An engine, characterized in that, Includes the injection valve as described in any one of claims 1 to 12.

14. An adjustment method, characterized in that, include: Measure the flow rate q at the outlet (130); Move the plug (300) in a direction perpendicular to the axial direction (Z) of the valve seat (200) so that the flow rate q at the outlet (130) is equal to the first preset flow rate Q; Fix the first adjusting member (710).

15. The adjustment method according to claim 14, characterized in that, Also includes: The pressure difference between the inlet (120) and the outlet (130) is limited to the first preset pressure difference; Power on the drive unit (600) and begin recording time; Once the driving component (600) has completed its operation, the recording time ends, and the duration t is obtained; Compare duration t with the first preset time T; When the time t is greater than the first preset time T, the blocking member (900) moves in the direction perpendicular to the axial direction (Z) of the valve seat (200). When the time length t is less than or equal to the first preset time T, the second adjusting component (720) is fixed.

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