Fuel injection device, fuel engine and vehicle

Abstract

The invention provides a fuel injection device, a fuel engine and a vehicle, and the fuel injection device comprises a shell assembly which is provided with a fuel input port and a first fuel channel which communicate with each other; the nozzle assembly is rotationally arranged on the shell assembly, a second fuel channel, a first injection hole and a second injection hole are formed in the nozzle assembly, the first injection hole and the second injection hole both communicate with the second fuel channel, and the conduction direction of the first injection hole and the conduction direction of the second injection hole are different and both intersect in the rotation axis direction of the nozzle assembly; the adjusting assembly is arranged on the shell assembly and used for adjusting connection or disconnection between the first fuel channel and the second fuel channel; the driving assembly is arranged on the shell assembly and used for driving the nozzle assembly to rotate. According to the fuel injection device provided by the embodiment of the invention, the fuel can be easily and widely distributed in the combustion chamber, the distribution of a fuel over-rich area or a fuel over-lean area in the combustion chamber is reduced, and the air utilization rate in the combustion chamber is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of engine technology, and in particular to a fuel injection device, a fuel engine and a vehicle. Background Art

[0002] The combustion performance and emission characteristics of an engine are often affected by the oil-gas mixing process in the combustion chamber. In related technologies, after fuel is injected into the combustion chamber of some engines, widely distributed fuel-rich areas or fuel-lean areas are easily formed, resulting in poor engine combustion efficiency and high in-cylinder emissions, which is not conducive to improving engine performance. Summary of the invention

[0003] The present disclosure aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] In view of this, according to a first aspect of an embodiment of the present disclosure, a fuel injection device is provided, comprising:

[0005] A housing assembly is formed with a fuel input port and a first fuel passage that are in communication with each other;

[0006] The nozzle assembly is rotatably disposed on the housing assembly, and is formed with a second fuel passage, a first injection hole, and a second injection hole. The first injection hole and the second injection hole are both connected to the second fuel passage. The conduction direction of the first injection hole and the conduction direction of the second injection hole are different, and both intersect with the rotation axis direction of the nozzle assembly.

[0007] An adjusting component, disposed in the housing component, for adjusting the conduction or cutoff between the first fuel channel and the second fuel channel;

[0008] The driving assembly is arranged on the housing assembly and is used for driving the nozzle assembly to rotate.

[0009] In a feasible embodiment, the conduction direction of the first injection hole is inclined to the direction of the rotation axis, and the distance from the feed end of the first injection hole to the rotation axis is smaller than the distance from the discharge end of the first injection hole to the rotation axis; and / or

[0010] The conduction direction of the second injection hole is inclined to the direction of the rotation axis, and the distance from the feed end of the second injection hole to the rotation axis is smaller than the distance from the discharge end of the second injection hole to the rotation axis.

[0011] In a feasible embodiment, the two ends of the nozzle assembly along the direction of the rotation axis are respectively a connecting end and an exit end, the connecting end is rotatably arranged on the shell assembly, and the exit end is formed with a first injection hole and a second injection hole, both of which are used to connect to the combustion chamber, and the direction of the rotation axis is used to extend along the depth direction of the combustion chamber.

[0012] In a feasible implementation, the angle between the conduction direction of the first injection hole and the direction of the rotation axis is greater than the angle between the conduction direction of the second injection hole and the direction of the rotation axis, and the outlet end is arranged toward the inner bottom wall of the combustion chamber.

[0013] In a feasible embodiment, the housing assembly includes:

[0014] The shell part is formed with a fuel input port and a first fuel channel, the nozzle assembly is rotatably arranged at one end of the shell part, the drive assembly is arranged at the other end of the shell part, the shell part is also formed with a fuel output port, the fuel output port is located at one end of the shell part connected to the nozzle assembly, and the fuel output port is connected to the second fuel channel, the drive assembly includes a drive motor, and the output shaft of the drive motor passes through the fuel output port and is connected to the nozzle assembly;

[0015] A filter unit is disposed in the first fuel channel;

[0016] The regulating component is used to regulate the conduction or cutoff between the first fuel channel and the fuel output port.

[0017] In one possible implementation, the adjustment component includes:

[0018] The valve core part is movably sleeved on the output shaft, the valve core part is sealed and connected between the output shaft and the housing part, the two ends of the valve core part along the axial direction of the output shaft are respectively a fitting end and a sealing end, the housing part is further formed with a sealing wall facing the sealing end, the sealing wall is arranged around the fuel output port, and the sealing end is suitable for abutting or separating from the sealing wall;

[0019] An elastic part is sleeved on the output shaft, one end of the elastic part is connected to the housing part, and the other end is connected to the mating end, and the elastic part is used to apply a force to the valve core part close to the sealing wall;

[0020] When the sealing end is in contact with the sealing wall, the first fuel channel is blocked from the fuel outlet; when the sealing end is separated from the sealing wall, the first fuel channel is connected to the fuel outlet.

[0021] In a feasible implementation manner, the adjustment component further includes:

[0022] The adjusting part is threadedly connected to the housing part, one end of the elastic part away from the valve core part is connected to the adjusting part, and the axial direction of the thread of the adjusting part is consistent with the axial direction of the output shaft.

[0023] In a feasible implementation manner, there are multiple first injection holes, and the multiple first injection holes are arranged at intervals around the rotation axis; and / or

[0024] There are multiple second injection holes, and the multiple second injection holes are arranged at intervals around the rotation axis.

[0025] According to a second aspect of an embodiment of the present disclosure, a fuel engine is provided, comprising:

[0026] A fuel injection device as set forth in any one of the first aspects above.

[0027] According to a third aspect of an embodiment of the present disclosure, a vehicle is provided, comprising:

[0028] A fuel engine as set forth in any one of the second aspects above.

[0029] Compared with the prior art, the present disclosure includes at least the following beneficial effects: the fuel injection device provided by the embodiment of the present disclosure includes a shell assembly, a nozzle assembly, an adjustment assembly and a drive assembly, wherein the nozzle assembly, the adjustment assembly and the drive assembly are all arranged on the shell assembly, and the nozzle assembly can rotate relative to the shell assembly under the drive of the drive assembly, and the adjustment assembly can be used to adjust the conduction or cutoff between the first fuel channel of the shell assembly and the second fuel channel of the nozzle assembly. Accordingly, when the first fuel channel and the second fuel channel are connected, the fuel connected to the fuel input port of the shell assembly can flow to the first injection hole and the second injection hole of the nozzle assembly through the first fuel channel and the second fuel channel, and be sprayed outward through the first injection hole and the second injection hole, and the conduction between the first injection hole and the second injection hole The directions of the first injection hole and the second injection hole are different, and the conducting directions of the first injection hole and the second injection hole are intersected with the direction of the rotation axis of the nozzle assembly. Therefore, when the nozzle assembly rotates and outputs fuel, on the one hand, the first injection hole and the second injection hole can rotate around the rotation axis accordingly, so that fuel can be injected into different areas in the circumferential direction of the rotation axis, and since the conducting directions of the first injection hole and the second injection hole are different, the distribution range of the fuel sprayed from the first injection hole and the second injection hole can also form a difference, thereby improving the wide distribution range of the fuel after injection; on the other hand, during the rotation of the nozzle assembly, the fuel is easy to form a local vortex after being ejected from the first injection hole and the second injection hole, thereby promoting the dispersion of the fuel, further improving the wide distribution of the fuel, and improving the degree of mixing of the fuel and the air. Based on this, the fuel injection device provided in the embodiment of the present disclosure, when used to inject fuel into the combustion chamber of the engine, can easily distribute the fuel more widely in the combustion chamber, reduce the distribution of fuel-rich areas or fuel-lean areas in the combustion chamber, enhance the degree of mixing of the fuel and the air in the combustion chamber, improve the air utilization rate in the combustion chamber, and facilitate rapid combustion of the fuel, thereby improving the combustion efficiency of the engine, reducing the engine's in-cylinder emissions, and improving the overall performance of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the exemplary embodiments below. The accompanying drawings are only for the purpose of illustrating exemplary embodiments and are not to be considered as limiting the present disclosure. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0031] Figure 1 A schematic structural diagram of a fuel injection device according to an embodiment of the present disclosure;

[0032] Figure 2 for Figure 1 A schematic partial enlarged view of the middle A area;

[0033] Figure 3 A schematic structural diagram of a nozzle assembly according to an embodiment of the present disclosure;

[0034] Figure 4 A schematic application scenario diagram of a fuel injection device according to an embodiment of the present disclosure.

[0035] in, Figures 1 to 4 The corresponding relationship between the reference numerals and the component names is as follows:

[0036] 10' combustion chamber; 11' middle boss area; 12' inner bottom wall; 13' inner top wall; 14' inner peripheral wall;

[0037] 10. Fuel injection device;

[0038] 100 housing assembly; 110 housing portion; 111 housing body; 112 cover body; 113 feed pipe; 114 feed pipe joint; 115 return pipe; 120 filter portion;

[0039] 200 nozzle assembly;

[0040] 300 adjustment component; 310 valve core portion; 320 elastic portion; 330 adjustment portion;

[0041] 400 driving assembly; 410 driving motor; 411 output shaft; 420 motor support; 430 sealing ring;

[0042] 101 fuel input port; 102 first fuel channel; 103 fuel output port; 104 sealing wall;

[0043] 201 second fuel channel; 202 first injection hole; 203 second injection hole; 204 connecting end; 205 exit end;

[0044] 301 mating end; 302 sealing end. DETAILED DESCRIPTION

[0045] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0046] like Figures 1 to 4 As shown, according to the first aspect of the embodiment of the present disclosure, a fuel injection device 10 is proposed, including: a shell assembly 100, formed with a connected fuel input port 101 and a first fuel channel 102; a nozzle assembly 200, rotatably arranged on the shell assembly 100, formed with a second fuel channel 201, a first injection hole 202 and a second injection hole 203, the first injection hole 202 and the second injection hole 203 are both connected to the second fuel channel 201, the conduction direction of the first injection hole 202 and the conduction direction of the second injection hole 203 are different, and both intersect with the rotation axis direction of the nozzle assembly 200; an adjustment assembly 300, arranged on the shell assembly 100, for adjusting the conduction or cutoff between the first fuel channel 102 and the second fuel channel 201; a driving assembly 400, arranged on the shell assembly 100, for driving the nozzle assembly 200 to rotate.

[0047] The fuel injection device 10 provided in the embodiment of the present disclosure includes the aforementioned housing assembly 100, the nozzle assembly 200, the adjustment assembly 300 and the drive assembly 400. Among them, the nozzle assembly 200, the adjustment assembly 300 and the drive assembly 400 are all arranged on the housing assembly 100, and the nozzle assembly 200 can rotate relative to the housing assembly 100 under the drive of the drive assembly 400, and the adjustment assembly 300 can be used to adjust the conduction or cutoff between the first fuel channel 102 of the housing assembly 100 and the second fuel channel 201 of the nozzle assembly 200. Accordingly, in the case of conduction between the first fuel channel 102 and the second fuel channel 201, the fuel connected to the fuel input port 101 of the housing assembly 100 can flow to the first injection hole 202 and the second injection hole 203 of the nozzle assembly 200 through the first fuel channel 102 and the second fuel channel 201, and be sprayed outward through the first injection hole 202 and the second injection hole 203.

[0048] The conduction directions of the first injection hole 202 and the second injection hole 203 are different, and the conduction directions of the first injection hole 202 and the second injection hole 203 are intersecting with the direction of the rotation axis of the nozzle assembly 200, so that when the nozzle assembly 200 rotates and outputs fuel, on the one hand, the first injection hole 202 and the second injection hole 203 can rotate around the rotation axis accordingly, and can spray fuel to different areas in the circumferential direction of the rotation axis. Since the conduction directions of the first injection hole 202 and the second injection hole 203 are different, the distribution range of the fuel sprayed from the first injection hole 202 and the second injection hole 203 can also be different, which can improve the wide distribution range of the fuel after ejection; on the other hand, during the rotation of the nozzle assembly 200, the fuel can be ejected in the form of a swirl, and it is easy to form a local vortex after ejecting from the first injection hole 202 and the second injection hole 203, thereby promoting fuel dispersion, further improving the wide distribution of the fuel, and improving the degree of mixing of the fuel and air.

[0049] Based on this, when the fuel injection device 10 provided in the embodiment of the present disclosure is used to inject fuel into the combustion chamber 10' of the engine, it can easily distribute the fuel more widely in the combustion chamber 10', reduce the distribution of the fuel-rich area or the fuel-lean area in the combustion chamber 10', enhance the mixing degree of the fuel and the air in the combustion chamber 10', improve the air utilization rate in the combustion chamber 10', and facilitate the rapid combustion of the fuel, thereby improving the combustion efficiency of the engine, reducing the engine's in-cylinder emissions, and improving the overall performance of the engine.

[0050] It should be noted that Figure 2 The dotted line L is used to schematically indicate the direction of the rotation axis of the nozzle assembly 200, the dotted line L1 is used to schematically indicate the conduction direction of the first injection hole 202, and the dotted line L3 is used to schematically indicate the conduction direction of the second injection hole 203. Accordingly, the angle between the conduction direction of the first injection hole 202 and the direction of the rotation axis is a1, and the angle between the conduction direction of the second injection hole 203 and the direction of the rotation axis is a2. It can be understood that the conduction direction of the first injection hole 202 and the conduction direction of the second injection hole 203 are different, and both intersect with the direction of the rotation axis of the nozzle assembly 200, which means that the angle a1 and the angle a2 are both greater than 0° and different from each other, and the angle a2 or the angle a2 can be 90°, that is, the conduction direction of the first injection hole 202 or the conduction direction of the second injection hole 203 can be perpendicular to the direction of the rotation axis.

[0051] It is understood that in practical applications, the fuel injection device 10 provided in the embodiment of the present disclosure can be used as a component of a fuel engine, or be arranged in a fuel engine and used to inject fuel into a combustion chamber 10' of the fuel engine. The aforementioned fuel can be, but is not limited to, fuel oil, such as gasoline or diesel. Figure 4 As shown, the aforementioned fuel injection device 10 is used to inject Figure 4 For example, when fuel is injected into the combustion chamber 10' shown in the figure, the combustion chamber 10' has a central boss inside, and the inner bottom wall 12' of the combustion chamber 10' includes the top wall of the aforementioned central boss. Accordingly, the partial area inside the combustion chamber 10' located above the central boss is the central boss area. The nozzle assembly 200 of the aforementioned fuel injection device 10 can pass through the inner top wall 13' of the combustion chamber 10' and be arranged relative to the aforementioned central boss. Accordingly, the conducting direction of one of the aforementioned first injection hole 202 and the second injection hole 203 can be arranged to intersect with the top wall of the aforementioned central boss, and The conducting direction of the other one is arranged to intersect with the peripheral wall of the combustion chamber 10', so that when the fuel injection device 10 injects fuel, the fuel can be dispersed to the area near the peripheral wall of the combustion chamber 10' and the central boss area, so that the fuel is more widely distributed in the combustion chamber 10', and the distribution of the fuel-rich area or the fuel-lean area in the combustion chamber 10' is reduced, the mixing degree of the fuel and the air in the combustion chamber 10' is enhanced, the air utilization rate in the combustion chamber 10' is improved, and the rapid combustion of the fuel is facilitated, thereby improving the combustion efficiency of the engine, reducing the engine's in-cylinder emissions, and improving the overall performance of the engine.

[0052] It is understandable that in actual applications, the specific number, conduction direction, size and other parameters of the first injection holes 202 and the second injection holes 203 can be selected according to actual needs, such as fuel characteristics, injection pressure, injection time and the profile of the combustion chamber 10', and no excessive restrictions are made here.

[0053] It can be understood that, in the case where the first fuel channel 102 and the second fuel channel 201 are cut off, the first injection hole 202 and the second injection hole 203 will stop injecting fuel accordingly.

[0054] like Figure 2 As shown, in some examples, the conduction direction of the first injection hole 202 is inclined to the direction of the rotation axis, and the distance from the feed end of the first injection hole 202 to the rotation axis is smaller than the distance from the discharge end of the first injection hole 202 to the rotation axis; and / or the conduction direction of the second injection hole 203 is inclined to the direction of the rotation axis, and the distance from the feed end of the second injection hole 203 to the rotation axis is smaller than the distance from the discharge end of the second injection hole 203 to the rotation axis.

[0055] In this technical solution, the conduction direction of the first injection hole 202 can be set to be inclined to the direction of the rotation axis, and the distance from the feed end of the first injection hole 202 to the rotation axis can be set to be smaller than the distance from the discharge end of the first injection hole 202 to the rotation axis; based on the above-mentioned settings, when the nozzle assembly 200 rotates and outputs fuel through the first injection hole 202, the fuel output by the first injection hole 202 is easy to form a state of roughly conical distribution around the rotation axis, and diffuses toward the circumference and bottom area of ​​the combustion chamber 10' after emission, which is conducive to further expanding the distribution range of the fuel output by the first injection hole 202, thereby reducing the distribution of the fuel-rich area or the fuel-lean area in the combustion chamber 10', enhancing the degree of mixing of the fuel and the air in the combustion chamber 10', and improving the air utilization rate in the combustion chamber 10'.

[0056] In this technical solution, the conduction direction of the second injection hole 203 can be set to be inclined to the direction of the rotation axis, and the distance from the feed end of the second injection hole 203 to the rotation axis can be set to be smaller than the distance from the discharge end of the second injection hole 203 to the rotation axis; based on the above-mentioned setting, when the nozzle assembly 200 rotates and outputs fuel through the second injection hole 203, the fuel output by the second injection hole 203 is easy to form a state of roughly conical distribution around the rotation axis, and diffuses toward the circumference and bottom area of ​​the combustion chamber 10' after emission, which is conducive to further expanding the distribution range of the fuel output by the second injection hole 203, thereby reducing the distribution of the fuel-rich area or the fuel-lean area in the combustion chamber 10', enhancing the degree of mixing of the fuel and the air in the combustion chamber 10', and improving the air utilization rate in the combustion chamber 10'.

[0057] In this technical solution, the conduction direction of the first injection hole 202 and the conduction direction of the second injection hole 203 can be set to be inclined to the direction of the rotation axis, and the distance from the feed end of the first injection hole 202 to the rotation axis is set to be smaller than the distance from the discharge end of the first injection hole 202 to the rotation axis, and the distance from the feed end of the second injection hole 203 to the rotation axis is smaller than the distance from the discharge end of the second injection hole 203 to the rotation axis; based on the above settings, when the nozzle assembly 200 rotates and outputs fuel, the fuel output from the first injection hole 202 and the second injection hole 203 is easy to form around the rotation axis It is distributed in a roughly conical shape and diffuses toward the circumference and bottom area of ​​the combustion chamber 10' after being ejected. Since the conduction direction of the first injection hole 202 and the conduction direction of the second injection hole 203 are different, the distribution ranges of the fuel output by the first injection hole 202 and the second injection hole 203 can form a difference and compensate each other, which is beneficial to expand the distribution range of the fuel output by the nozzle assembly 200 to a greater extent, thereby reducing the distribution of the fuel-rich area or the fuel-lean area in the combustion chamber 10', enhancing the degree of mixing of the fuel and the air in the combustion chamber 10', and improving the air utilization rate in the combustion chamber 10'.

[0058] It can be understood that the aforementioned feed end and the aforementioned discharge end are the two ends of the injection hole; in the flow path of the fuel, the aforementioned feed end is located upstream of the aforementioned discharge end.

[0059] In some examples, the two ends of the nozzle assembly 200 along the direction of the rotation axis are respectively a connecting end 204 and an exit end 205, the connecting end 204 is rotatably disposed on the shell assembly 100, and the exit end 205 is formed with a first injection hole 202 and a second injection hole 203, both of which are used to connect to the combustion chamber 10', and the direction of the rotation axis is used to extend along the depth direction of the combustion chamber 10'.

[0060] In this technical solution, the first injection hole 202 and the second injection hole 203 can be opened at the exit end 205 of the nozzle assembly 200. In actual applications, the first injection hole 202 and the second injection hole 203 are both connected to the combustion chamber 10', and the rotation axis direction of the nozzle assembly 200 extends along the depth direction of the combustion chamber 10'; based on the above-mentioned setting, when the nozzle assembly 200 rotates and outputs fuel through the second injection hole 203, the fuel is easy to diffuse in the circumferential and depth directions of the combustion chamber 10' after exiting, which is beneficial to further expand the distribution range of the fuel output by the second injection hole 203, thereby reducing the distribution of the fuel-rich area or the fuel-lean area in the combustion chamber 10', enhancing the degree of mixing of the fuel and the air in the combustion chamber 10', and improving the air utilization rate in the combustion chamber 10'.

[0061] It can be understood that the depth direction of the combustion chamber 10' is also the arrangement direction of the inner top wall 13' and the inner bottom wall 12'.

[0062] It is understandable that in practical applications, a sliding seal may be provided between the connection end 204 and the housing assembly 100 to reduce the risk of fuel leakage. For example, the connection end 204 may form a sealing surface with the housing assembly 100 through a dimensional tolerance for sliding seal.

[0063] Exemplarily, the aforementioned rotation axis can be arranged along the axial direction of the combustion chamber 10', so that the emission end 205 is arranged corresponding to the middle boss area 11' of the combustion chamber 10', thereby increasing the fuel concentration in the middle boss area 11'.

[0064] like Figure 2 As shown, in some examples, the angle a1 between the conduction direction of the first injection hole 202 and the rotation axis direction is greater than the angle a2 between the conduction direction of the second injection hole 203 and the rotation axis direction, and the outlet end 205 is arranged toward the inner bottom wall 12' of the combustion chamber 10'.

[0065] In this technical solution, the fuel injection device 10 can be arranged at the top of the combustion chamber 10' so that the aforementioned exit end 205 is arranged toward the inner bottom wall 12' of the combustion chamber 10', and the aforementioned angle a1 can be set to be greater than the aforementioned angle a2; based on the aforementioned setting, when the nozzle assembly 200 rotates and outputs fuel, the fuel is easy to diffuse toward the circumference and bottom area of ​​the combustion chamber 10' after being ejected, and because the aforementioned angle a1 is greater than the aforementioned angle a2, the fuel output by the first injection hole 202 is easy to diffuse toward the circumference of the combustion chamber 10', and the fuel output by the second injection hole 203 is easy to diffuse toward the bottom of the combustion chamber 10', and the distribution ranges of the fuel output by the first injection hole 202 and the second injection hole 203 can form differences and compensate each other, which is conducive to expanding the distribution range of the fuel output by the nozzle assembly 200 to a greater extent, thereby reducing the distribution of the fuel-rich area or the fuel-lean area in the combustion chamber 10', enhancing the degree of mixing of the fuel and the air in the combustion chamber 10', and improving the air utilization rate in the combustion chamber 10'.

[0066] like Figure 1 and Figure 2 As shown, in some examples, the shell assembly 100 includes: a shell portion 110, which is formed with a fuel input port 101 and a first fuel channel 102, the nozzle assembly 200 is rotatably disposed at one end of the shell portion 110, and the drive assembly 400 is disposed at the other end of the shell portion 110. The shell portion 110 is also formed with a fuel output port 103, the fuel output port 103 is located at one end of the shell portion 110 connected to the nozzle assembly 200, and the fuel output port 103 is connected to the second fuel channel 201, the drive assembly 400 includes a drive motor 410, and the output shaft 411 of the drive motor 410 passes through the fuel output port 103 and is connected to the nozzle assembly 200; a filter portion 120, which is disposed in the first fuel channel 102; wherein the adjustment assembly 300 is used to adjust the conduction or cutoff between the first fuel channel 102 and the fuel output port 103.

[0067] In this technical solution, the housing assembly 100 may include the aforementioned housing portion 110 and the filter portion 120; based on the aforementioned arrangement, on the one hand, the structural compactness of the fuel injection device 10 can be improved, which is beneficial to improving the miniaturization level of the fuel injection device 10 and reducing the installation difficulty and use cost of the fuel injection device 10; on the other hand, it can also improve the cleanliness of the fuel output by the fuel injection device 10 and reduce the impurity content of the fuel output by the fuel injection device 10, which is beneficial to further ensure the combustion performance and emission characteristics of the engine.

[0068] It is understandable that the filter unit 120 may be, but is not limited to, a fuel filter element.

[0069] Exemplarily, the shell portion 110 may include a shell body 111, a cover 112, a feed pipe 113, a feed pipe joint 114 and a return pipe 115; the cover 112 is detachably arranged on the shell body 111, the drive motor 410 is arranged on the cover 112, and the output shaft 411 of the drive motor 410 passes through the cover 112 and the shell body 111 and is connected to the nozzle assembly 200; the feed pipe 113 and the return pipe 115 are both connected to the shell body 111 at one end, and the other end extends in a direction away from the shell body 111, and the return pipe 115 is formed with a return channel, which is connected to the inside of the shell body 111; the feed pipe joint 114 is sleeved on the feed pipe 113 and is used to connect to the outside The fuel inlet 101 is formed at one end of the feed pipe 113 away from the shell body 111; the first fuel channel 102 is partially formed at the feed pipe 113 and partially formed at the shell body 111; the fuel outlet 103 is formed at one end of the shell body 111 away from the cover body 112, and the end of the first fuel channel 102 away from the fuel inlet 101 extends toward the position of the fuel outlet 103; at least part of the regulating assembly 300 is located between the end of the first fuel channel 102 away from the fuel inlet 101 and the fuel outlet 103, and is used to connect or cut off the communication relationship between the first fuel channel 102 and the fuel outlet 103.

[0070] It is understandable that the drive motor 410 includes a motor body and the output shaft 411, and the output shaft 411 is rotatably disposed on the motor body. Exemplarily, the drive assembly 400 may also include a motor support 420 and a sealing ring 430, wherein the motor support 420 is used to support the motor body, and the sealing ring 430 is disposed between the motor body and the cover 112 and arranged around the output shaft 411.

[0071] like Figure 1 and Figure 2As shown, in some examples, the regulating assembly 300 includes: a valve core portion 310, which is movably sleeved on the output shaft 411, and the valve core portion 310 is sealed and connected between the output shaft 411 and the housing portion 110, and the two ends of the valve core portion 310 along the axial direction of the output shaft 411 are respectively a mating end 301 and a sealing end 302, and the housing portion 110 is further formed with a sealing wall 104 facing the sealing end 302, and the sealing wall 104 is arranged around the fuel output port 103, and the sealing end 302 is suitable for abutting or separating from the sealing wall 104. ; The elastic portion 320 is sleeved on the output shaft 411, one end of the elastic portion 320 is connected to the shell portion 110, and the other end is connected to the mating end 301, and the elastic portion 320 is used to apply a force to the valve core portion 310 close to the sealing wall 104; wherein, when the sealing end 302 abuts against the sealing wall 104, the first fuel channel 102 and the fuel output port 103 are cut off; when the sealing end 302 is separated from the sealing wall 104, the first fuel channel 102 and the fuel output port 103 are connected.

[0072] In this technical solution, the regulating assembly 300 may include the aforementioned valve core portion 310 and the elastic portion 320. It can be understood that at least part of the valve core portion 310 is located between the first fuel channel 102 and the fuel output port 103, and the valve core portion 310 is suitable for overcoming the force of the elastic portion 320 under the action of the fuel pressure in the first fuel channel 102 and moving in the direction close to the elastic portion 320; based on the aforementioned arrangement, the valve core portion 310 can abut against the aforementioned sealing wall 104 under the force applied by the elastic portion 320 to cut off the first fuel channel 102 and the fuel output port 103. 3 is connected to prevent the fuel from flowing to the nozzle assembly 200. Accordingly, the fuel pressure in the first fuel channel 102 can be adjusted by adjusting the pressure of the fuel connected to the fuel input port 101, so that the sealing end 302 is separated from the sealing wall 104 under the action of the fuel pressure in the first fuel channel 102, so as to connect the first fuel channel 102 and the fuel output port 103, thereby allowing the fuel to flow to the nozzle assembly 200 to achieve fuel injection, which is beneficial to reduce the difficulty of output control of the fuel injection assembly and improve the convenience and controllability of the fuel injection assembly.

[0073] It is understandable that the valve core part 310 is sealed between the output shaft 411 and the housing part 110 , which means that the outer peripheral wall of the valve core part 310 is sealed to the housing part 110 , and the inner peripheral wall 14 ′ of the valve core part 310 is sealed to the output shaft 411 .

[0074] It can be understood that the elastic portion 320 may be, but is not limited to, a spring.

[0075] Exemplarily, the sealing end 302 is roughly cone-shaped, and the sealing wall 104 is roughly conical in shape to match the sealing end 302 .

[0076] like Figure 1 As shown, in some examples, the adjustment assembly 300 also includes: an adjustment portion 330, which is threadedly connected to the housing portion 110, and one end of the elastic portion 320 away from the valve core portion 310 is connected to the adjustment portion 330, and the axial direction of the thread of the adjustment portion 330 is consistent with the axial direction of the output shaft 411.

[0077] In this technical solution, the adjustment component 300 may also include the aforementioned adjustment part 330; based on the aforementioned setting, the distance between the adjustment part 330 and the sealing wall 104 can be adjusted by changing the position of the adjustment part 330 in the axial direction of the thread of the shell assembly 100, thereby changing the compression amount of the elastic part 320 and the force applied to the valve core part 310, thereby facilitating the adjustment of the fuel pressure required when the valve core part 310 is separated from the sealing wall 104, which is beneficial to further improve the controllability and flexibility of the adjustment component 300 in practical applications.

[0078] Exemplarily, when the shell body 110 includes the aforementioned cover body 112 , the aforementioned cover body 112 may be formed with an internal thread, the aforementioned adjustment portion 330 may be formed with an external thread that matches the aforementioned internal thread, and the adjustment portion 330 is threadedly connected to the aforementioned cover body 112 .

[0079] like Figure 2 and Figure 3 As shown, in some examples, there are multiple first spray holes 202, which are arranged at intervals around the rotation axis; and / or there are multiple second spray holes 203, which are arranged at intervals around the rotation axis.

[0080] In this technical solution, a plurality of first injection holes 202 can be provided, and the plurality of first injection holes 202 can be arranged at intervals around the rotation axis; based on the aforementioned arrangement, the fuel injection efficiency of the nozzle assembly 200 can be further improved, and when the nozzle assembly 200 rotates and outputs fuel through the first injection holes 202, the fuel output by the first injection holes 202 is easy to form a radial distribution state around the rotation axis, and diffuses toward the circumference and bottom area of ​​the combustion chamber 10' after being ejected, which is conducive to further expanding the distribution range of the fuel output by the first injection hole 202, thereby reducing the distribution of the fuel-rich area or the fuel-lean area in the combustion chamber 10', enhancing the degree of mixing of the fuel and the air in the combustion chamber 10', and improving the air utilization rate in the combustion chamber 10'.

[0081] In this technical solution, a plurality of second injection holes 203 can be provided, and the plurality of second injection holes 203 can be arranged at intervals around the rotation axis; based on the aforementioned arrangement, the fuel injection efficiency of the nozzle assembly 200 can be further improved, and when the nozzle assembly 200 rotates and outputs fuel through the second injection holes 203, the fuel output by the second injection holes 203 is easy to form a radial distribution state around the rotation axis, and diffuses toward the circumference and bottom area of ​​the combustion chamber 10' after being ejected, which is conducive to further expanding the distribution range of the fuel output by the second injection holes 203, thereby reducing the distribution of the fuel-rich area or the fuel-lean area in the combustion chamber 10', enhancing the degree of mixing of the fuel and the air in the combustion chamber 10', and improving the air utilization rate in the combustion chamber 10'.

[0082] In this technical solution, a plurality of first injection holes 202 and a plurality of second injection holes 203 can be provided, and they are arranged at intervals around the rotation axis. Based on the above arrangement, the fuel injection efficiency of the nozzle assembly 200 can be improved to a greater extent.

[0083] In some feasible examples, the sum of the conduction areas of the second injection holes 203 is smaller than the sum of the conduction areas of the first injection holes 202 , so that the fuel flow rates output by the first injection holes 202 and the second injection holes 203 can be different.

[0084] In some feasible examples, the feed end of the second injection hole 203 is connected to the first injection hole 202, so that in actual applications, the fuel in the first injection hole 202 can be partially diverted to the second injection hole 203, which facilitates the second injection hole 203 to access the fuel and helps to reduce the difficulty of opening the nozzle assembly 200.

[0085] In some feasible examples, the nozzle assembly 200 may include a nozzle body and a connecting shaft connected to each other, the first spray hole 202 and the second spray hole 203 are formed in the nozzle body, the connecting shaft is formed with an external thread, the output shaft 411 of the driving motor 410 is formed with an internal thread, and the connecting shaft is threadedly connected to the output shaft 411. Exemplarily, the thread loosening direction of the connecting shaft may be opposite to the direction of rotation of the output shaft 411, thereby preventing the nozzle assembly 200 from being loosened from the output shaft 411 during rotation.

[0086] According to a second aspect of an embodiment of the present disclosure, a fuel engine is provided, comprising: a fuel injection device as provided in any one of the first aspects above.

[0087] Since the fuel engine provided by the embodiment of the present disclosure includes a fuel injection device as proposed in any one of the first aspects above, it has all the beneficial effects of the fuel injection device, which will not be elaborated here.

[0088] According to a third aspect of an embodiment of the present disclosure, a vehicle is provided, comprising: a fuel engine as provided in any one of the second aspects above.

[0089] Since the vehicle provided by the embodiment of the present disclosure includes a fuel engine as proposed in any one of the second aspects above, it has all the beneficial effects of the fuel engine and will not be elaborated here.

[0090] In the present disclosure, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0091] In the description of the present disclosure, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be understood as a limitation on the present disclosure.

[0092] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0093] The above are only preferred embodiments of the present disclosure and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A fuel injection device, characterized in that: include: A housing assembly is formed with a fuel input port and a first fuel passage that are in communication with each other; a nozzle assembly rotatably disposed on the housing assembly, formed with a second fuel passage, a first injection hole, and a second injection hole, wherein the first injection hole and the second injection hole are both connected to the second fuel passage, and a conducting direction of the first injection hole and a conducting direction of the second injection hole are different and both intersect with a direction of a rotation axis of the nozzle assembly; An adjusting component, disposed on the housing component, for adjusting the conduction or cutoff between the first fuel channel and the second fuel channel; The driving assembly is arranged on the housing assembly and is used for driving the nozzle assembly to rotate.

2. The fuel injection device according to claim 1, characterized in that The conduction direction of the first injection hole is inclined to the direction of the rotation axis, and the distance from the feed end of the first injection hole to the rotation axis is smaller than the distance from the discharge end of the first injection hole to the rotation axis; and / or The conducting direction of the second injection hole is inclined to the direction of the rotation axis, and the distance from the feed end of the second injection hole to the rotation axis is smaller than the distance from the discharge end of the second injection hole to the rotation axis.

3. The fuel injection device according to claim 1, characterized in that: The two ends of the nozzle assembly along the direction of the rotation axis are respectively a connecting end and an exit end, the connecting end is rotatably arranged on the shell assembly, the exit end is formed with the first injection hole and the second injection hole, the first injection hole and the second injection hole are both used to be connected to the combustion chamber, and the direction of the rotation axis is used to extend along the depth direction of the combustion chamber.

4. The fuel injection device according to claim 3, characterized in that: The angle between the conducting direction of the first injection hole and the direction of the rotation axis is greater than the angle between the conducting direction of the second injection hole and the direction of the rotation axis, and the exit end is arranged toward the inner bottom wall of the combustion chamber.

5. The fuel injection device according to any one of claims 1 to 4, characterized in that: The housing assembly comprises: The shell part is formed with the fuel input port and the first fuel channel, the nozzle assembly is rotatably arranged at one end of the shell part, the drive assembly is arranged at the other end of the shell part, the shell part is also formed with a fuel output port, the fuel output port is located at one end of the shell part connected to the nozzle assembly, and the fuel output port is connected to the second fuel channel, the drive assembly includes a drive motor, and the output shaft of the drive motor passes through the fuel output port and is connected to the nozzle assembly; A filter unit is disposed in the first fuel channel; The regulating component is used to regulate the conduction or cutoff between the first fuel channel and the fuel output port.

6. The fuel injection device according to claim 5, characterized in that: The adjustment component comprises: A valve core part, movably sleeved on the output shaft, the valve core part is sealed and connected between the output shaft and the housing part, the two ends of the valve core part along the axial direction of the output shaft are a fitting end and a sealing end respectively, the housing part is further formed with a sealing wall facing the sealing end, the sealing wall is arranged around the fuel output port, and the sealing end is suitable for abutting or separating from the sealing wall; an elastic part, sleeved on the output shaft, one end of the elastic part being connected to the housing part, and the other end being connected to the mating end, and the elastic part being used to apply a force to the valve core part approaching the sealing wall; Wherein, when the sealing end abuts against the sealing wall, the first fuel channel is blocked from the fuel outlet; when the sealing end is separated from the sealing wall, the first fuel channel is connected to the fuel outlet.

7. The fuel injection device according to claim 6, characterized in that The adjustment component also includes: The adjusting part is threadedly connected to the housing part, one end of the elastic part away from the valve core part is connected to the adjusting part, and the axial direction of the thread of the adjusting part is consistent with the axial direction of the output shaft.

8. The fuel injection device according to any one of claims 1 to 4, characterized in that: There are multiple first injection holes, and the multiple first injection holes are arranged at intervals around the rotation axis; and / or There are a plurality of the second injection holes, and the plurality of the second injection holes are arranged at intervals around the rotation axis.

9. A fuel engine, characterized in that: include: A fuel injection device as claimed in any one of claims 1 to 8.

10. A vehicle, characterized in that: include: The fuel engine as claimed in claim 9.

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