Ejector, engine and vehicle

Abstract

The invention relates to the technical field of vehicles, and particularly discloses an ejector, an engine and a vehicle, the ejector comprises a machine body, an oil duct switching assembly, a needle valve assembly and a driving assembly, the oil duct switching assembly comprises a first oil valve and a first moving rod which are in sliding connection, and a first pressure chamber is arranged in the first oil valve; an outlet of the first oil inlet channel communicates with the first pressure chamber, and the first sealing part on the first moving rod is arranged in the first pressure chamber. A first flat position and a second flat position are arranged on a needle valve body of the needle valve assembly in a spaced mode, the injection channel is sequentially divided into a first liquid inlet section, a second liquid inlet section and a liquid outlet section from an inlet to an outlet of the injection channel, an outlet of the first oil outlet channel is communicated with the first liquid inlet section, and an outlet of the second oil outlet channel is communicated with the second liquid inlet section. The driving assembly can drive the first moving rod to move, so that the first sealing part can selectively block and seal an inlet of the first oil outlet channel or an inlet of the second oil outlet channel, and therefore the injection rule of the injector is adjusted.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to an injector, an engine and a vehicle. Background Art

[0002] The injector is one of the core components of the engine, and its performance directly affects the combustion efficiency and emission level of the engine. The main function of the injector is to spray high-pressure fuel into the cylinder in a certain pattern to meet the operating requirements of the engine under different working conditions. The control of the injection pattern is one of the key technologies in the design of the injector, which determines the parameters such as the injection speed, injection duration and injection pressure of the fuel, and has an important impact on the combustion process of the engine.

[0003] In the related art, the control valve assembly of the injector includes two injection control valves arranged in parallel and symmetrically. One of the control valves is selected to work or both control valves are selected to work at the same time according to the need to adjust the injection amount and change the injection pattern of the injector. However, when changing the injection pattern, it often affects other performances of the injector such as the injection pressure and the maximum injection speed, which will have a negative impact on the combustion efficiency and emission level of the engine. It is difficult to adjust the injection pattern during the operation of the injector, which limits the operating performance of the engine to a certain extent. Moreover, variable injection rate injectors are often complex in structure and bulky in size. Some are completed by the cooperation of multiple components, with high manufacturing costs, which to a certain extent increases the manufacturing cost of the engine and the difficulty of installing the whole machine. Summary of the invention

[0004] The purpose of the present invention is to provide an injector, an engine and a vehicle to solve the problems in the related art that the injector requires two control valves to be arranged in parallel to work together, it is difficult to adjust the injection law during the operation of the injector, and the structure is complex and the volume is large.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] In a first aspect, the present invention provides an injector, comprising:

[0007] The engine body is provided with a first oil inlet passage, a first oil outlet passage and a second oil outlet passage;

[0008] An oil passage switching assembly comprises a first oil valve and a first moving rod which are slidably connected, wherein a first pressure chamber is provided in the first oil valve, an outlet of the first oil inlet passage is communicated with the first pressure chamber, the first moving rod has a first sealing portion, the first sealing portion is arranged in the first pressure chamber, and an inlet of the first oil outlet passage and an inlet of the second oil outlet passage can selectively communicate with the first pressure chamber through the first sealing portion;

[0009] A needle valve assembly, comprising a needle valve body and a needle valve seat sleeved outside the needle valve body, an injection channel is formed between the needle valve seat and the needle valve body, a first flat position and a second flat position are provided on the needle valve body to divide the injection channel into a first liquid inlet section, a second liquid inlet section and a liquid outlet section from its inlet to its outlet, the outlet of the first oil outlet channel is connected to the first liquid inlet section, the outlet of the second oil outlet channel is connected to the second liquid inlet section, and the liquid outlet section can be connected to the outside;

[0010] The driving assembly can drive the first moving rod to move.

[0011] In one embodiment, a flow area between the first flattened position and the side wall of the injection channel is smaller than a flow area between the second flattened position and the side wall of the injection channel.

[0012] In one embodiment, the injector further includes an injection control component, and the injection control component includes:

[0013] a second oil valve, wherein the second oil valve is provided with a receiving groove, the top of the needle valve body is slidably disposed in the receiving groove, the top of the needle valve body and the side wall of the receiving groove are surrounded to form a first pressure storage chamber, the second oil valve is provided with a second oil inlet passage and a third oil outlet passage, the flow area of ​​the third oil outlet passage is larger than the flow area of ​​the second oil inlet passage, and the outlet of the first oil outlet passage is connected with the first pressure storage chamber through the second oil inlet passage;

[0014] A second movable rod, the second movable rod can be slidably arranged on the second oil valve, the second movable rod has a second sealing portion, the body is also provided with an oil return channel, the driving component can drive the second movable rod to move, and the third oil outlet channel can be selectively connected to or cut off from the oil return channel through the second sealing portion.

[0015] In one embodiment, the drive assembly comprises:

[0016] The oil channel switching driving member comprises a first electromagnet, a first elastic member, a first armature and a second elastic member, wherein the first elastic member is arranged between the first electromagnet and the first armature, the second elastic member is arranged between the first armature and the first oil valve, and the first moving rod is fixedly arranged on the first armature;

[0017] The needle valve switch driving member comprises a second electromagnet, a third elastic member, a second armature and a fourth elastic member, wherein the third elastic member is arranged between the second electromagnet and the second armature, the fourth elastic member is arranged between the second armature and the second oil valve, and the second moving rod is fixedly arranged on the second armature;

[0018] Wherein, when the first electromagnet is not energized, the force of the first elastic member can overcome the force of the second elastic member, and the first sealing portion blocks the entrance of the second oil outlet channel;

[0019] When the first electromagnet is energized, the magnetic attraction force of the first electromagnet on the first armature and the force of the second elastic member on the first armature can overcome the force of the first elastic member on the first armature, and the first sealing portion blocks the entrance of the first oil outlet passage;

[0020] When the second electromagnet is not energized, the force exerted by the third elastic member on the second armature can overcome the force exerted by the fourth elastic member on the second armature, and the second sealing portion blocks the third oil outlet passage;

[0021] When the second electromagnet is energized, the magnetic attraction of the second electromagnet on the second armature and the force of the fourth elastic member on the second armature can overcome the force of the third elastic member on the second armature, and the second sealing portion is away from opening the third oil outlet.

[0022] In one embodiment, a fifth elastic member is provided between the needle valve body and the second oil valve, the needle valve body has a first sealing surface, the needle valve seat has a second sealing surface, and the fifth elastic member is configured to apply a force to the needle valve body so that the first sealing surface and the second sealing surface are pressed and sealed to block the liquid outlet section.

[0023] In one embodiment, the first electromagnet and the second electromagnet are integrally formed, and the first electromagnet and the second electromagnet are located between the first oil valve and the second oil valve; or,

[0024] The first electromagnet and the second electromagnet are separately arranged, and the first electromagnet and the second electromagnet are located between the first oil valve and the second oil valve, or the first oil valve is located between the first electromagnet and the second electromagnet.

[0025] In one embodiment, the body comprises:

[0026] A first seat body, wherein a first groove is disposed on the first seat body, the oil channel switching assembly is disposed in the first groove, a lift adjustment ring is disposed between the first seat body and the first electromagnet, and the lift adjustment ring can adjust the distance between the first electromagnet and the first seat body to adjust the moving lift of the first moving rod;

[0027] a second seat body, wherein the second seat body is detachably connected to the first seat body, a second groove and an oil delivery channel are provided on the second seat body, the oil injection control assembly is arranged in the second groove, the needle valve seat is detachably connected to the bottom of the second seat body, the needle valve body is penetrated in the oil delivery channel and the injection channel, and the first liquid inlet section of the injection channel and the outlet of the first oil outlet channel are both connected to the oil delivery channel.

[0028] In one embodiment, the second oil valve comprises a second control valve seat and a valve sleeve, the valve sleeve has a fixed portion and a connecting portion connected to each other, the fourth elastic member can press and fix the second control valve seat and the fixed portion on the bottom of the second groove, the connecting portion extends into the oil delivery channel, the accommodating groove and the first pressure accumulating chamber are arranged on the connecting portion, and the connecting portion is connected to the needle valve body through the accommodating groove;

[0029] Among them, an active chamber is arranged between the second control valve seat and the valve sleeve, the second oil inlet passage is arranged on the side of the fixed part, the oil delivery passage is communicated with the first pressure accumulation chamber through the second oil inlet passage, the first pressure accumulation chamber is communicated with the active chamber through the third oil outlet passage, the second movable rod is slidably connected with the second control valve seat, the second sealing part extends into the active chamber to block or open the third oil outlet passage, the fixed part is provided with a return oil delivery hole, and the active chamber is communicated with the return oil passage through the return oil delivery hole.

[0030] In one embodiment, the first oil valve comprises a first control valve seat, a first oil inlet valve seat and a second oil inlet valve seat, and the first control valve seat is threadedly connected to the groove wall of the first groove to press and fix the first oil inlet valve seat and the second oil inlet valve seat to the groove bottom of the first groove;

[0031] The first pressure chamber is arranged between the first oil inlet valve seat and the second oil inlet valve seat, the first oil inlet valve is provided with a second pressure chamber, the inlet of the first oil outlet channel is connected with the first pressure chamber through the second pressure chamber, a third sealing surface is arranged at the inlet of the second pressure chamber, and a fourth sealing surface is arranged at the inlet of the second oil outlet channel, the third sealing surface and the fourth sealing surface are arranged at intervals on the moving path of the first sealing part, the first sealing part is a sealing ball structure, and the surface of the first sealing part can abut and seal with the third sealing surface or the fourth sealing surface.

[0032] In one embodiment, a second pressure storage chamber is provided on the needle valve seat, and the outlet of the second oil outlet passage is connected with the second liquid inlet section through the second pressure storage chamber; and / or,

[0033] The clearance between the side wall of the needle valve body and the groove wall of the receiving groove is matched, and the matching clearance between the side wall of the needle valve body and the groove wall of the receiving groove is 0.005 mm to 0.012 mm; and / or,

[0034] There is a clearance fit between the side wall of the needle valve body and the inner wall of the liquid outlet section of the needle valve seat, and the clearance fit between the side wall of the needle valve body and the inner wall of the liquid outlet section of the needle valve seat is 0.003 mm to 0.010 mm.

[0035] In a second aspect, the present invention provides an engine, comprising an engine body and the injector in any of the above schemes.

[0036] In a third aspect, the present invention provides a vehicle, comprising a vehicle body and the engine of any of the above schemes, wherein the engine is arranged on the vehicle body.

[0037] The beneficial effects of the present invention are:

[0038] The present invention provides an injector, an engine and a vehicle. The injector switches the injection rate by arranging a first oil outlet channel and a second oil outlet channel on the body to cooperate with a first flat position and a second flat position on the needle valve body. The flow area of ​​the second liquid inlet section and the liquid outlet section is different from the flow area of ​​the first liquid inlet section, the second liquid inlet section and the liquid outlet section, thereby forming two different paths for selective switching injection. The injector can be switched by adjusting the position of the first moving rod during operation, thereby realizing the switching of the flow limiting effectiveness of the first flat position and the second flat position, thereby adjusting the injection law of the injector. The injection law can be variable without changing other performances of the injector such as the injection pressure and the injection speed, which has a positive impact on the combustion efficiency and emission level of the engine. Moreover, compared with the situation in which two injection control valves are arranged in parallel and symmetrically in the related art, the injector in this embodiment has a simple structure, which reduces the manufacturing cost of the injector, thereby reducing the manufacturing cost and layout difficulty of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the structure of the ejector in an embodiment of the present invention;

[0040] Figure 2 It is a structural schematic diagram of the injector when the first oil outlet passage is connected in the embodiment of the present invention;

[0041] Figure 3 It is a structural schematic diagram of the injector when the second oil outlet passage is connected in the embodiment of the present invention;

[0042] Figure 4 It is a schematic diagram of the structure of the oil channel switching assembly on the first seat body in an embodiment of the present invention;

[0043] Figure 5 It is a schematic diagram of the structure of the fuel injection control assembly on the second seat body and the needle valve assembly in an embodiment of the present invention.

[0044] In the figure:

[0045] 1. Body;

[0046] 11. First oil inlet passage; 12. First oil outlet passage; 13. Second oil outlet passage; 14. Oil return passage;

[0047] 15. first seat body; 151. first groove;

[0048] 16. Second seat body; 161. Second groove; 162. Oil delivery channel;

[0049] 17. Lift adjustment ring;

[0050] 2. Oil channel switching assembly;

[0051] 21, first oil valve; 211, first pressure chamber; 212, first control valve seat; 213, first oil inlet valve seat; 2131, fourth sealing surface; 214, second oil inlet valve seat; 2141, second pressure chamber; 2142, third sealing surface;

[0052] 22. first moving rod; 221. first sealing part;

[0053] 3. Needle valve assembly;

[0054] 31. needle valve body; 311. first sealing surface;

[0055] 32. needle valve seat; 321. second sealing surface; 322. second pressure storage chamber;

[0056] 33, injection channel; 331, first liquid inlet section; 332, second liquid inlet section; 333, liquid outlet section;

[0057] 34, first flat position; 35, second flat position;

[0058] 4. Drive components;

[0059] 41, oil channel switching driving member; 411, first electromagnet; 412, first elastic member; 413, first armature; 414, second elastic member;

[0060] 42, needle valve switch driving member; 421, second electromagnet; 422, third elastic member; 423, second armature; 424, fourth elastic member;

[0061] 5. Fuel injection control components;

[0062] 51, second oil valve; 511, receiving groove; 512, first pressure accumulator chamber; 513, second oil inlet passage; 514, third oil outlet passage; 515, second control valve seat; 516, valve sleeve; 5161, fixed part; 5162, connecting part; 517, movable chamber; 518, oil return and oil delivery hole;

[0063] 52. Second moving rod; 521. Second sealing portion; 53. Fifth elastic member. DETAILED DESCRIPTION

[0064] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0065] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0067] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0068] like Figures 1 to 3As shown, an embodiment of the first aspect of the present invention provides an injector, which includes a body 1, an oil channel switching assembly 2, a needle valve assembly 3 and a drive assembly 4. The body 1 is provided with a first oil inlet channel 11, a first oil outlet channel 12 and a second oil outlet channel 13. The first oil inlet channel 11 can be connected to an external high-pressure oil storage device or a high-pressure oil compression device for supplying high-pressure oil input. The oil channel switching assembly 2 includes a first oil valve 21 and a first moving rod 22 that are slidably connected. A first pressure chamber 211 is provided in the first oil valve 21. The outlet of the first oil inlet channel 11 is connected to the first pressure chamber 211. The first moving rod 22 has a first sealing portion 221. The first sealing portion 221 is arranged in the first pressure chamber 211. The inlet of the first oil outlet channel 12 and the inlet of the second oil outlet channel 13 can be selectively connected to or blocked with the first pressure chamber 211 through the first sealing portion 221, that is, the first sealing portion 221 can move synchronously with the first moving rod 22, and the first sealing portion 221 can move to the inlet of the first oil outlet channel 12 to block the first oil outlet channel 12. At this time, the first oil outlet channel 12 is not connected to the first pressure chamber 211, and the first oil inlet channel 11 can be connected to the second oil outlet channel 13 through the first pressure chamber 211, and the high-pressure oil flows out from the second oil outlet channel 13. The first sealing portion 221 can move to the entrance of the second oil outlet 13 to seal the second oil outlet 13. At this time, the second oil outlet 13 is not connected to the first pressure chamber 211, and the first oil inlet 11 can be connected to the first oil outlet 12 through the first pressure chamber 211, and high-pressure oil flows out from the first oil outlet 12.

[0069] The needle valve assembly 3 includes a needle valve body 31 and a needle valve seat 32. The needle valve seat 32 is sleeved on the outside of the needle valve body 31. There is a gap between the needle valve seat 32 and the needle valve body 31 to form an injection channel 33. The needle valve body 31 is provided with a first flat position 34 and a second flat position 35 at intervals to separate the injection channel 33 from its own inlet to the outlet into a first liquid inlet section 331, a second liquid inlet section 332 and a liquid outlet section 333 in sequence. The first flat position 34 and the second flat position 35 can be a convex structure that protrudes radially outward toward the needle valve body 31. The convex structure can continuously surround the circumference of the needle valve body 31, for example, an annular flange structure, or the convex structure can also be intermittently arranged around the circumference of the needle valve body 31, for example, a plurality of convex block structures arranged at intervals. The outlet of the first oil outlet passage 12 is connected to the first liquid inlet section 331, and the liquid outlet section 333 can be connected to the outside, so that the first flat position 34 plays a flow limiting role, and the high-pressure oil in the first oil outlet passage 12 can be sprayed to the outside after passing through the first liquid inlet section 331, the second liquid inlet section 332 and the liquid outlet section 333. The outlet of the second oil outlet passage 13 is connected to the second liquid inlet section 332, so that the second flat position 35 plays a flow limiting role, and the high-pressure oil in the second oil outlet passage 13 can be sprayed to the outside after passing through the second liquid inlet section 332 and the liquid outlet section 333.

[0070] The driving assembly 4 can drive the first moving rod 22 to move, so as to switch the sealing position of the first sealing portion 221, so that the first sealing portion 221 can selectively seal the entrance of the first oil outlet passage 12 or the entrance of the second oil outlet passage 13. The driving assembly 4 can be, but is not limited to, an electromagnetic structure, a cylinder structure, a hydraulic cylinder structure, or an electric telescopic rod structure, and can drive the first moving rod 22 to move.

[0071] In this way, the injector of this embodiment switches the injection rate by arranging the first oil outlet channel 12 and the second oil outlet channel 13 on the body 1 to cooperate with the first flat position 34 and the second flat position 35 on the needle valve body 31. When the driving assembly 4 drives the first moving rod 22 to move to the first sealing portion 221 to seal the entrance of the first oil outlet channel 12, the first oil outlet channel 12 is not connected to the first pressure chamber 211, and the first oil inlet channel 11 can be connected to the second oil outlet channel 13 through the first pressure chamber 211. The high-pressure oil flows out from the second oil outlet channel 13 to the second liquid inlet section 332, so that the second flat position 35 plays a flow limiting role, and the high-pressure oil in the second oil outlet channel 13 can be sprayed to the outside after passing through the second liquid inlet section 332 and the liquid outlet section 333.

[0072] When the driving component 4 drives the first moving rod 22 to move to the first sealing portion 221 to block the entrance of the second oil outlet channel 13, the second oil outlet channel 13 is not connected to the first pressure chamber 211, and the first oil inlet channel 11 can be connected to the first oil outlet channel 12 through the first pressure chamber 211, and the high-pressure oil flows out from the first oil outlet channel 12 to the first liquid inlet section 331, so that the first flat position 34 plays a flow limiting role, and the high-pressure oil in the first oil outlet channel 12 can be sprayed to the outside after passing through the first liquid inlet section 331, the second liquid inlet section 332 and the liquid outlet section 333. The flow area of ​​the second liquid inlet section 332 and the liquid outlet section 333 is different from the flow area of ​​the first liquid inlet section 331, the second liquid inlet section 332 and the liquid outlet section 333, thereby forming two different paths for selective switching injection, which can be adjusted by adjusting the first moving rod 22 to adjust the injection area during the operation of the injector. The position of the rod 22 is switched to achieve the switching of the flow limiting effectiveness of the first flat position 34 and the second flat position 35, so as to adjust the injection pattern of the injector, for example, the opening rate and closing rate of the injection, so as to achieve the variable injection pattern, and the variable injection pattern can be achieved without changing other performances of the injector such as the injection pressure and the injection speed, which has a positive impact on the combustion efficiency and emission level of the engine. Moreover, compared with the situation in the related art where two injection control valves are arranged in parallel and symmetrically, the injector in this embodiment has a simple structure, which reduces the manufacturing cost of the injector, thereby reducing the manufacturing cost and layout difficulty of the engine, and solves the problem in the related art that the injector needs two control valves to be arranged in parallel to work together, it is difficult to adjust the injection pattern during the operation of the injector, and the structure is complex and the volume is large.

[0073] like Figures 1 to 3 As shown, in some embodiments, the flow area between the first flat position 34 and the side wall of the injection channel 33 is smaller than the flow area between the second flat position 35 and the side wall of the injection channel 33, which can increase the difference between the flow area of ​​the second liquid inlet section 332 and the liquid outlet section 333 and the flow area of ​​the first liquid inlet section 331, the second liquid inlet section 332 and the liquid outlet section 333. The injection rate when the first flat position 34 limits the flow can be significantly smaller than the injection rate when the second flat position 35 limits the flow.

[0074] like Figure 1 and Figure 5 As shown, in some embodiments, the injector further includes an injection control assembly 5, which includes a second oil valve 51 and a second moving rod 52. The second oil valve 51 is provided with a receiving groove 511, and the top of the needle valve body 31 is slidably arranged in the receiving groove 511, and the receiving groove 511 can guide the axial movement of the needle valve body 31. The top of the needle valve body 31 and the side wall of the receiving groove 511 are surrounded to form a first pressure storage chamber 512, and a certain volume of high-pressure oil can be contained in the first pressure storage chamber 512. The second oil valve 51 has a second oil inlet 513 and a third oil outlet 514, and the flow area of ​​the third oil outlet 514 is larger than the flow area of ​​the second oil inlet 513. The outlet of the first oil outlet 12 is connected to the first pressure storage chamber 512 through the second oil inlet 513, that is, the high-pressure oil in the first oil outlet 12 can partially enter the first pressure storage chamber 512 through the second oil inlet 513.

[0075] The second movable rod 52 can be slidably arranged on the second oil valve 51, and the second oil valve 51 can guide the movement of the second movable rod 52 to reduce shaking. The second movable rod 52 has a second sealing portion 521, and the body 1 is also provided with an oil return channel 14, and the oil return channel 14 can be connected to an external filtering device or oil storage device. The driving component 4 can drive the second movable rod 52 to move, and the third oil outlet channel 514 can be selectively connected to or cut off from the oil return channel 14 through the second sealing portion 521, that is, the driving component 4 drives the second movable rod 52 to move, and the second sealing portion 521 can selectively open the third oil outlet channel 514 or block the third oil outlet channel 514.

[0076] In this way, when the injector is closed and not working, the second sealing portion 521 of the second movable rod 52 blocks the outlet of the third oil outlet channel 514, and the first pressure storage chamber 512 is filled with oil to form a certain oil pressure, which can apply a certain pressure to the needle valve body 31. Under the action of the oil pressure of the first pressure storage chamber 512, or the combined action of the oil pressure of the first pressure storage chamber 512 and the elastic force of the fifth elastic member 53, the needle valve body 31 can abut against the needle valve seat 32 to maintain a seal to prevent oil from spraying out. When the injector needs to work, the drive assembly 4 drives the second moving rod 52 to slide, so that the second sealing part 521 moves away from the third oil outlet 514, and the oil flow rate of the third oil outlet 514 is greater than the oil flow rate, the oil pressure in the first pressure storage chamber 512 is reduced, and the force on the needle valve body 31 is reduced. Under the action of the pressure difference between the upper and lower ends of the needle valve body 31, the needle valve body 31 will slide toward the receiving groove 511, and the liquid outlet section 333 between the needle valve body 31 and the needle valve seat 32 is connected, and the high-pressure oil can be sprayed to the outside. The drive assembly 4 drives the second moving rod 52 of the injection control assembly 5 to move, and can pass through the second oil valve 51 needle valve or reduce the force on the needle valve body 31, so that the needle valve body 31 moves relative to the needle valve seat 32, thereby realizing the spraying or cutting off of the high-pressure oil, and can flexibly switch the working state of the injector.

[0077] like Figure 1 and Figure 4As shown, in some embodiments, the drive assembly 4 includes an oil channel switching drive member 41 and a needle valve switch drive member 42, the oil channel switching drive member 41 includes a first electromagnet 411, a first elastic member 412, a first armature 413 and a second elastic member 414, the first elastic member 412 is arranged between the first electromagnet 411 and the first armature 413, the second elastic member 414 is arranged between the first armature 413 and the first oil valve 21, the first moving rod 22 is fixedly arranged on the first armature 413, and when the first electromagnet 411 is not energized, the force of the first elastic member 412 can overcome the second elastic member 4 14, the preload force of the first elastic member 412 is greater than the preload force of the second elastic member 414, so that the first sealing portion 221 of the first movable rod 22 blocks the entrance of the second oil outlet channel, the second oil outlet channel 13 is not connected with the first pressure chamber 211, the first oil inlet channel 11 can be connected with the first oil outlet channel 12 through the first pressure chamber 211, and the high-pressure oil flows out from the first oil outlet channel 12 to the first liquid inlet section 331, so that the first flat position 34 plays a flow limiting role, and the high-pressure oil in the first oil outlet channel 12 can be sprayed to the outside after passing through the first liquid inlet section 331, the second liquid inlet section 332 and the liquid outlet section 333. When the first electromagnet 411 is energized, the magnetic attraction of the first electromagnet 411 on the first armature 413 and the force of the second elastic member 414 on the first armature 413 cooperate to overcome the force of the first elastic member 412 on the first armature 413, so that the first movable rod 22 moves, and the first sealing portion 221 can block the entrance of the first oil outlet channel 12, the first oil outlet channel 12 is not connected to the first pressure chamber 211, and the first oil inlet channel 11 can be connected to the second oil outlet channel 13 through the first pressure chamber 211, and the high-pressure oil flows out from the second oil outlet channel 13 to the second liquid inlet section 332, so that the second flat position 35 plays a flow limiting role, and the high-pressure oil in the second oil outlet channel 13 can be sprayed to the outside after passing through the second liquid inlet section 332 and the liquid outlet section 333.

[0078] The needle valve switch driving member 42 includes a second electromagnet 421, a third elastic member 422, a second armature 423 and a fourth elastic member 424. The third elastic member 422 is arranged between the second electromagnet 421 and the second armature 423, the fourth elastic member 424 is arranged between the second armature 423 and the second oil valve 51, and the second moving rod 52 is fixedly arranged on the second armature 423. When the second electromagnet 421 is not energized, the force of the third elastic member 422 on the second armature 423 can overcome the force of the fourth elastic member 424 on the second armature 423, and the pre-tightening force of the third elastic member 422 is greater than the pre-tightening force of the fourth elastic member 424, so that the second sealing portion 521 of the second moving rod 52 blocks the third oil outlet 514, and the third oil outlet 514 is not connected to the return oil channel 14. When the second electromagnet 421 is energized, the magnetic attraction of the second electromagnet 421 on the second armature 423 and the force of the fourth elastic member 424 on the second armature 423 can overcome the force of the third elastic member 422 on the second armature 423, so that the second sealing portion 521 of the second movable rod 52 is away from opening the third oil outlet channel 514, the oil outlet flow rate of the third oil outlet channel 514 is greater than the oil inlet flow rate, the oil pressure in the first pressure accumulation chamber 512 is reduced, the pressure in the first pressure accumulation chamber 512 is reduced, the force of the oil in the first pressure accumulation chamber 512 on the needle valve body 31 is less than the force of the oil between the needle valve body 31 and the body 1 on the needle valve body 31, so that the needle valve body 31 moves relative to the needle valve seat 32 to open the liquid outlet section 333, and the high-pressure oil can be sprayed out.

[0079] In this embodiment, the first elastic member 412 , the second elastic member 414 , the third elastic member 422 and the fourth elastic member 424 may be, but are not limited to, springs or elastic material tubes that can be elastically deformed and exert elastic force.

[0080] like Figure 1 and Figure 5 As shown, in some embodiments, a fifth elastic member 53 is provided between the needle valve body 31 and the second oil valve 51, the needle valve body 31 has a first sealing surface 311, and the needle valve seat 32 has a second sealing surface 321, and the fifth elastic member 53 is configured to apply a force to the needle valve body 31, so that the first sealing surface 311 and the second sealing surface 321 are pressed and sealed to block the liquid outlet section 333, and under the preload force of the fifth elastic member 53 and the oil pressure of the first pressure storage chamber 512, the needle valve body 31 can overcome the oil pressure force in the oil delivery channel 162, and the first sealing surface 311 and the second sealing surface 321 are pressed and sealed. When the second electromagnet 421 is energized, the oil pressure in the first pressure storage chamber 512 decreases, and the force of the oil pressure in the oil delivery channel 162 on the needle valve body 31 can overcome the preload force of the fifth elastic member 53 and the oil pressure force of the first pressure storage chamber 512. The needle valve body 31 can move relative to the needle valve seat 32, and the first sealing surface 311 and the second sealing surface 321 are separated to open the oil supply for liquid injection.

[0081] In this embodiment, the first sealing surface 311 and the second sealing surface 321 can be an annular conical surface or a stepped plane, and can achieve the conduction or cutoff of the high-pressure oil by changing the distance. The first sealing surface 311 and the second sealing surface 321 can be set at the liquid outlet section 333 of the injection channel 33, and of course, can also be set at other positions between the needle valve body 31 and the needle valve seat 32 as needed, and can achieve the conduction or cutoff of the high-pressure oil.

[0082] Among them, the fifth elastic member 53 can be but is not limited to a spring or an elastic material pipe fitting, and the two ends of the fifth elastic member 53 can be fixedly connected to the needle valve body 31 and the second oil valve 51 respectively, or, the needle valve body 31 can be provided with a clamping portion such as a flange or a retaining ring, and when the needle valve body 31 is installed in the accommodating groove 511, the fifth elastic member 53 can be clamped between the clamping portion and the second oil valve 51.

[0083] like Figure 1 and Figure 5 As shown, in some embodiments, the first electromagnet 411 and the second electromagnet 421 are separately arranged, and the first electromagnet 411 and the second electromagnet 421 are located between the first oil valve 21 and the second oil valve 51, or the first oil valve 21 is located between the first electromagnet 411 and the second electromagnet 421, that is, the first electromagnet 411 and the second electromagnet 421 are two independently arranged electromagnet structures, and the arrangement positions of the two can be close to or far away from each other, which reduces the requirements for installation space, is conducive to reducing the overall size of the injector, and is convenient for the overall layout of the engine.

[0084] Alternatively, the first electromagnet 411 and the second electromagnet 421 are integrally formed, and the first electromagnet 411 and the second electromagnet 421 are located between the first oil valve 21 and the second oil valve 51, that is, the first electromagnet 411 and the second electromagnet 421 can be designed as the same electromagnet structure, and the electromagnet structure is provided with two independent circuits in opposite directions, and the two circuits can be energized to adjust the movement of the first moving rod 22 and the second moving rod 52 respectively. Alternatively, a circuit is also arranged on the magnet structure, and magnetic attraction forces in different directions can be generated by applying different response currents to the circuit, and the movement of the first moving rod 22 and the second moving rod 52 can be adjusted respectively, which can reduce the overall volume of the first electromagnet 411 and the second electromagnet 421, simplify the injector structure, reduce costs, and reduce space occupancy.

[0085] like Figure 1 as well as Figures 4 to 5As shown, in some embodiments, the body 1 includes a first seat body 15 and a second seat body 16, the first seat body 15 is provided with a first groove 151, the oil channel switching assembly 2 is arranged in the first groove 151, and the first groove 151 can provide an accommodating space for the oil channel switching assembly 2. A lift adjustment ring 17 is provided between the first seat body 15 and the first electromagnet 411. The lift adjustment ring 17 can adjust the distance between the first electromagnet 411 and the first seat body 15 to adjust the movement lift of the first moving rod 22 and reduce the situation where the first shift rod is over-displaced or not moved into place, that is, the lift adjustment ring 17 can be clamped between the first seat body 15 and the first electromagnet 411 to support the first electromagnet 411 from the first seat body 15. Optionally, the lift adjustment ring 17 can be threadedly connected to the first seat body 15, and the lift adjustment ring 17 can be rotated to different positions relative to the first seat body 15. Alternatively, the lift adjustment ring 17 can be a telescopic tube, a cylinder or a hydraulic cylinder structure, or the lift adjustment ring 17 can also be provided with a plurality of ring pieces. Different heights can be achieved by installing different numbers of ring pieces, and the first electromagnet 411 can be supported from the first seat body 15 to different distances.

[0086] The second seat body 16 is detachably connected to the first seat body 15, and the connection can be, but is not limited to, bolt connection, clamping, bonding or magnetic connection. The second seat body 16 is provided with a second groove 161 and an oil delivery channel 162 that are connected to each other, and the injection control assembly 5 is arranged in the second groove 161, and the second groove 161 can provide an installation space for the injection control assembly 5. The needle valve seat 32 is detachably connected to the bottom of the second seat body 16, and the connection can be, but is not limited to, clamping, bolting, bonding or magnetic connection. The needle valve body 31 is arranged in the oil delivery channel 162 and the injection channel 33. The first liquid inlet section 331 of the injection channel 33 and the outlet of the first oil outlet channel 12 are both connected to the oil delivery channel 162. The high-pressure oil flowing out of the outlet of the first oil outlet channel 12 can first enter the oil delivery channel 162 to fill the oil delivery channel and then flow out to the first liquid inlet section 331. When the second electromagnet 421 is energized, the oil pressure in the first pressure accumulation chamber 512 is reduced, and the force of the oil in the oil delivery channel 162 on the needle valve body 31 can overcome the force of the oil in the first pressure accumulation chamber 512 on the needle valve body 31 and the force of the fifth elastic member 53 on the needle valve body 31, so as to push the needle valve body 31 to move relative to the needle valve seat 32 to open the liquid outlet section 333, so that the oil delivery channel 162 is easy to be filled with high-pressure oil.

[0087] like Figure 1 as well as Figures 4 to 5As shown, in some embodiments, the second oil valve 51 includes a second control valve seat 515 and a valve sleeve 516, the valve sleeve 516 has a fixed portion 5161 and a connecting portion 5162 connected to each other, and the fourth elastic member 424 can press and fix the second control valve seat 515 and the fixed portion 5161 to the bottom of the second groove 161, so as to reduce the displacement of the second oil valve 51. The connecting portion 5162 extends into the oil delivery channel 162, the receiving groove 511 and the first pressure accumulation chamber 512 are arranged on the connecting portion 5162, the connecting portion 5162 is connected to the needle valve body 31 through the receiving groove 511, and the connecting portion 5162 can be sleeved outside the needle valve body 31 through the receiving groove 511.

[0088] An active cavity 517 is provided between the second control valve seat 515 and the valve sleeve 516, the second oil inlet passage 513 is provided at the side of the fixed portion 5161, the oil delivery channel 162 is communicated with the first pressure accumulator chamber 512 through the second oil inlet passage 513, the first pressure accumulator chamber 512 is communicated with the active cavity 517 through the third oil outlet passage 514, the second moving rod 52 is slidably connected with the second control valve seat 515, and the second control valve can guide the second moving rod 52 in a sliding manner. The second sealing portion 521 extends into the active cavity 517 to block or open the third oil outlet passage 514, the second sealing portion 521 can be, but is not limited to, a sealing ball structure, the oil outlet of the third oil outlet passage 514 is provided with a sealing surface such as a conical surface or a spherical groove, and the surface of the sealing ball structure abuts against the sealing surface to perform sealing. The fixed portion 5161 is provided with an oil return hole 518, and the active chamber 517 is connected with the oil return channel 14 through the oil return hole 518, that is, after the second sealing portion 521 opens the third oil outlet channel 514, the oil in the active chamber 517 flows out through the third oil outlet channel, the oil return hole 518 and the oil return channel 14 in sequence.

[0089] like Figure 1 as well as Figures 4 to 5 As shown, in some embodiments, the first oil valve 21 includes a first control valve seat 212, a first oil inlet valve seat 213 and a second oil inlet valve seat 214. The first control valve seat 212 is threadedly connected to the groove wall of the first groove 151 to press and fix the first oil inlet valve seat 213 and the second oil inlet valve seat 214 to the groove bottom of the first groove 151, thereby achieving the fixation of the first oil valve 21 and the first seat body 15.

[0090] The first pressure chamber 211 is arranged between the first oil inlet valve seat 213 and the second oil inlet valve seat 214, and the second pressure chamber 2141 is arranged on the first oil inlet valve. The entrance of the first oil outlet channel 12 is connected with the first pressure chamber 211 through the second pressure chamber 2141. A third sealing surface 2142 is arranged at the entrance of the second pressure chamber 2141, and a fourth sealing surface 2131 is arranged at the entrance of the second oil outlet channel 13. The third sealing surface 2142 and the fourth sealing surface 2131 are arranged at intervals on the moving path of the first sealing part 221. The first sealing part 221 is a sealing ball structure. The surface of the first sealing part 221 can be abutted and sealed with the third sealing surface 2142 or the fourth sealing surface 2131. With this arrangement, the first sealing part 221 can more accurately open or close the first oil outlet channel and the second oil outlet channel by performing surface sealing with the third sealing surface 2142 or the fourth sealing surface 2131. In addition, the entrance of the first oil outlet channel 12 is connected to the first pressure chamber 211 through the second pressure chamber 2141. Since the first movable rod 22 drives the first sealing part 221 to move to achieve sealing, the entrance of the first oil outlet channel 12 and the entrance of the second oil outlet channel 13 are arranged on the front and rear moving path of the first sealing part 221. Compared with the oil passing gap between the first movable rod 22 and the first oil valve 21, by setting the second pressure chamber 2141, when the entrance of the first oil outlet channel 12 is opened, the first pressure chamber 211 is connected to the second pressure chamber 2141, and the first movable rod 22 can be inserted into the position of the second pressure chamber 2141. The second pressure chamber 2141 can increase the oil storage space, so that the oil in the first pressure chamber 211 can enter the first oil outlet channel 12 in sufficient quantity and quickly.

[0091] like Figure 1 as well as Figures 4 to 5 As shown, in some embodiments, a second pressure storage chamber 322 is provided on the needle valve seat 32, and the outlet of the second oil outlet channel 13 is connected with the second liquid inlet section 332 through the second pressure storage chamber 322. The second pressure storage chamber 322 can increase the oil storage space of the second oil outlet channel 13 at the position of the second liquid inlet section 332, so as to facilitate the continuous and sufficient spraying of the oil in the second oil outlet channel 13 through the second liquid inlet section 332 and the liquid outlet section 333.

[0092] In addition, the clearance between the side wall of the needle valve body 31 and the groove wall of the accommodating groove 511 is matched, and the matching clearance between the side wall of the needle valve body 31 and the groove wall of the accommodating groove 511 is 0.005 mm to 0.012 mm, which can not only enable the needle valve body 31 to slide smoothly in the accommodating groove 511 and guide the needle valve body 31, but also reduce the impact on the oil pressure in the first pressure storage chamber 512.

[0093] There is a clearance fit between the side wall of the needle valve body 31 and the inner wall of the liquid outlet section 333 of the needle valve seat 32. The clearance between the side wall of the needle valve body 31 and the inner wall of the liquid outlet section 333 of the needle valve seat 32 is 0.003 mm to 0.010 mm, which can enable the needle valve body 31 to slide smoothly on the needle valve seat 32 and guide the needle valve body 31.

[0094] An embodiment of the second aspect of the present invention provides an engine, comprising an engine body and an injector in any of the above embodiments. During the operation of the engine, the injection rate of the injector can be switched as needed, thereby improving the engine's operating performance such as combustion efficiency or emission level, and reducing the engine's manufacturing cost and the difficulty of installing the entire machine.

[0095] Since the engine of the embodiment of the present invention includes the above-mentioned injector, it has all the advantages and beneficial effects of the above-mentioned embodiments, which will not be described in detail here.

[0096] An embodiment of the third aspect of the present invention provides a vehicle, comprising a vehicle body and the engine in any one of the above embodiments, wherein the engine is arranged on the vehicle body.

[0097] Since the vehicle of the embodiment of the present invention includes the above-mentioned engine, the vehicle has all the advantages and beneficial effects of the above-mentioned embodiments, which will not be described in detail here.

[0098] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An ejector, characterized in that: include: The engine body is provided with a first oil inlet passage, a first oil outlet passage and a second oil outlet passage; An oil passage switching assembly comprises a first oil valve and a first moving rod which are slidably connected, wherein a first pressure chamber is provided in the first oil valve, an outlet of the first oil inlet passage is communicated with the first pressure chamber, the first moving rod has a first sealing portion, the first sealing portion is arranged in the first pressure chamber, and an inlet of the first oil outlet passage and an inlet of the second oil outlet passage can selectively communicate with the first pressure chamber through the first sealing portion; A needle valve assembly, comprising a needle valve body and a needle valve seat sleeved outside the needle valve body, an injection channel is formed between the needle valve seat and the needle valve body, a first flat position and a second flat position are provided on the needle valve body to divide the injection channel into a first liquid inlet section, a second liquid inlet section and a liquid outlet section from its inlet to its outlet, the outlet of the first oil outlet channel is connected to the first liquid inlet section, the outlet of the second oil outlet channel is connected to the second liquid inlet section, and the liquid outlet section can be connected to the outside; The driving assembly can drive the first moving rod to move.

2. The injector according to claim 1, characterized in that A flow area between the first flattened position and the side wall of the injection channel is smaller than a flow area between the second flattened position and the side wall of the injection channel.

3. The injector according to claim 1, characterized in that The injector further comprises an injection control assembly, wherein the injection control assembly comprises: a second oil valve, wherein the second oil valve is provided with a receiving groove, the top of the needle valve body is slidably disposed in the receiving groove, the top of the needle valve body and the side wall of the receiving groove are surrounded to form a first pressure storage chamber, the second oil valve is provided with a second oil inlet passage and a third oil outlet passage, the flow area of ​​the third oil outlet passage is larger than the flow area of ​​the second oil inlet passage, and the outlet of the first oil outlet passage is connected with the first pressure storage chamber through the second oil inlet passage; A second movable rod, the second movable rod can be slidably arranged on the second oil valve, the second movable rod has a second sealing portion, the body is also provided with an oil return channel, the driving component can drive the second movable rod to move, and the third oil outlet channel can be selectively connected to or cut off from the oil return channel through the second sealing portion.

4. The injector according to claim 3, characterized in that The drive assembly comprises: The oil channel switching driving member comprises a first electromagnet, a first elastic member, a first armature and a second elastic member, wherein the first elastic member is arranged between the first electromagnet and the first armature, the second elastic member is arranged between the first armature and the first oil valve, and the first moving rod is fixedly arranged on the first armature; The needle valve switch driving member comprises a second electromagnet, a third elastic member, a second armature and a fourth elastic member, wherein the third elastic member is arranged between the second electromagnet and the second armature, the fourth elastic member is arranged between the second armature and the second oil valve, and the second moving rod is fixedly arranged on the second armature; Wherein, when the first electromagnet is not energized, the force of the first elastic member can overcome the force of the second elastic member, and the first sealing portion blocks the entrance of the second oil outlet channel; When the first electromagnet is energized, the magnetic attraction force of the first electromagnet on the first armature and the force of the second elastic member on the first armature can overcome the force of the first elastic member on the first armature, and the first sealing portion blocks the entrance of the first oil outlet passage; When the second electromagnet is not energized, the force exerted by the third elastic member on the second armature can overcome the force exerted by the fourth elastic member on the second armature, and the second sealing portion blocks the third oil outlet passage; When the second electromagnet is energized, the magnetic attraction of the second electromagnet on the second armature and the force of the fourth elastic member on the second armature can overcome the force of the third elastic member on the second armature, and the second sealing portion can be moved away from and open the third oil outlet.

5. The injector according to claim 4, characterized in that A fifth elastic member is arranged between the needle valve body and the second oil valve, the needle valve body has a first sealing surface, the needle valve seat has a second sealing surface, and the fifth elastic member is configured to apply a force to the needle valve body so that the first sealing surface and the second sealing surface are pressed and sealed to block the liquid outlet section.

6. The injector according to claim 4, characterized in that The first electromagnet and the second electromagnet are integrally formed, and the first electromagnet and the second electromagnet are located between the first oil valve and the second oil valve; or, The first electromagnet and the second electromagnet are separately arranged, and the first electromagnet and the second electromagnet are located between the first oil valve and the second oil valve, or the first oil valve is located between the first electromagnet and the second electromagnet.

7. The injector according to claim 4, characterized in that The body comprises: A first seat body, wherein a first groove is disposed on the first seat body, the oil channel switching assembly is disposed in the first groove, a lift adjustment ring is disposed between the first seat body and the first electromagnet, and the lift adjustment ring can adjust the distance between the first electromagnet and the first seat body to adjust the moving lift of the first moving rod; a second seat body, wherein the second seat body is detachably connected to the first seat body, a second groove and an oil delivery channel are provided on the second seat body, the oil injection control assembly is arranged in the second groove, the needle valve seat is detachably connected to the bottom of the second seat body, the needle valve body is penetrated in the oil delivery channel and the injection channel, and the first liquid inlet section of the injection channel and the outlet of the first oil outlet channel are both connected to the oil delivery channel.

8. The injector according to claim 7, characterized in that The second oil valve comprises a second control valve seat and a valve sleeve, the valve sleeve has a fixed portion and a connecting portion connected to each other, the fourth elastic member can press and fix the second control valve seat and the fixed portion on the bottom of the second groove, the connecting portion extends into the oil delivery channel, the accommodating groove and the first pressure accumulating chamber are arranged on the connecting portion, and the connecting portion is connected to the needle valve body through the accommodating groove; Among them, an active chamber is arranged between the second control valve seat and the valve sleeve, the second oil inlet passage is arranged on the side of the fixed part, the oil delivery passage is communicated with the first pressure accumulation chamber through the second oil inlet passage, the first pressure accumulation chamber is communicated with the active chamber through the third oil outlet passage, the second movable rod is slidably connected with the second control valve seat, the second sealing part extends into the active chamber to block or open the third oil outlet passage, the fixed part is provided with a return oil delivery hole, and the active chamber is communicated with the return oil passage through the return oil delivery hole.

9. The injector according to claim 7, characterized in that The first oil valve comprises a first control valve seat, a first oil inlet valve seat and a second oil inlet valve seat, wherein the first control valve seat is threadedly connected to the groove wall of the first groove so as to press and fix the first oil inlet valve seat and the second oil inlet valve seat to the groove bottom of the first groove; The first pressure chamber is arranged between the first oil inlet valve seat and the second oil inlet valve seat, the first oil inlet valve seat is provided with a second pressure chamber, the inlet of the first oil outlet channel is connected with the first pressure chamber through the second pressure chamber, a third sealing surface is arranged at the inlet of the second pressure chamber, and a fourth sealing surface is arranged at the inlet of the second oil outlet channel, the third sealing surface and the fourth sealing surface are arranged at intervals on the moving path of the first sealing part, the first sealing part is a sealing ball structure, and the surface of the first sealing part can abut and seal with the third sealing surface or the fourth sealing surface.

10. The injector according to claim 3, characterized in that The needle valve seat is provided with a second pressure storage chamber, and the outlet of the second oil outlet passage is connected with the second liquid inlet section through the second pressure storage chamber; and / or, The clearance between the side wall of the needle valve body and the groove wall of the receiving groove is matched, and the matching clearance between the side wall of the needle valve body and the groove wall of the receiving groove is 0.005 mm to 0.012 mm; and / or, There is a clearance fit between the side wall of the needle valve body and the inner wall of the liquid outlet section of the needle valve seat, and the clearance fit between the side wall of the needle valve body and the inner wall of the liquid outlet section of the needle valve seat is 0.003 mm to 0.010 mm.

11. An engine, characterized in that: The invention comprises an engine body and the injector according to any one of claims 1 to 10.

12. A vehicle, characterized in that: The vehicle comprises a vehicle body and the engine according to claim 11, wherein the engine is arranged on the vehicle body.

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