Fuel injection system, fuel engine and vehicle

Abstract

This disclosure provides a fuel injection device, a fuel engine, and a vehicle. The fuel injection device includes: a housing assembly having a connected fuel inlet and a first fuel passage; a nozzle assembly rotatably disposed on the housing assembly, having a second fuel passage, a first injection hole, and a second injection hole, both connected to the second fuel passage, with the first and second injection holes having different conduction directions and intersecting the rotation axis of the nozzle assembly; an adjustment assembly disposed on the housing assembly for adjusting the connection or disconnection between the first and second fuel passages; and a drive assembly disposed on the housing assembly for driving the nozzle assembly to rotate. The fuel injection device provided by this disclosure allows for a more widespread distribution of fuel within the combustion chamber, reducing the distribution of excessively rich or lean fuel regions within the combustion chamber and improving air utilization within the combustion chamber.

Description

Technical Field

[0001] This disclosure relates to the field of engine technology, and more particularly to a fuel injection device, a fuel engine, and a vehicle. Background Technology

[0002] The combustion performance and emission characteristics of an engine are often affected by the fuel-air mixing process in the combustion chamber. In some related technologies, after fuel is injected into the combustion chamber of some engines, it is easy to form a wide range of fuel-rich or fuel-lean regions, resulting in poor combustion efficiency and high in-cylinder emissions, which is not conducive to improving engine performance. Summary of the Invention

[0003] This disclosure aims to address at least one of the technical problems existing in the prior art or related technologies.

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

[0005] The housing assembly has a connected fuel inlet and a first fuel passage;

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

[0007] An adjustment component, disposed in the housing assembly, is used to adjust the connection or cutoff between the first fuel passage and the second fuel passage;

[0008] A drive assembly, located on the housing assembly, is used to drive the nozzle assembly to rotate.

[0009] In one feasible implementation, 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 less 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 less than the distance from the discharge end of the second injection hole to the rotation axis.

[0011] In one feasible embodiment, the nozzle assembly has a connecting end and an ejection end at its two ends along the rotation axis direction, the connecting end being rotatably disposed on the housing assembly, and the ejection end having a first injection hole and a second injection hole, both of which are used to communicate with the combustion chamber, and the rotation axis direction is used to extend along the depth direction of the combustion chamber.

[0012] In one 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 ejection end is arranged toward the inner bottom wall of the combustion chamber.

[0013] In one feasible implementation, the housing assembly includes:

[0014] The housing portion has a fuel inlet and a first fuel passage. A nozzle assembly is rotatably disposed at one end of the housing portion, and a drive assembly is disposed at the other end of the housing portion. The housing portion also has a fuel outlet located at one end of the housing portion connected to the nozzle assembly and connected to a second fuel passage. The drive assembly includes a drive motor, and the output shaft of the drive motor passes through the fuel outlet and is connected to the nozzle assembly.

[0015] The filter section is located within the first fuel passage;

[0016] The regulating component is used to adjust the connection or disconnection between the first fuel passage and the fuel outlet.

[0017] In one feasible implementation, the regulating component includes:

[0018] The valve core is movably sleeved on the output shaft. The valve core is sealed between the output shaft and the housing. The two ends of the valve core along the axial direction of the output shaft are the mating end and the sealing end, respectively. The housing also forms a sealing wall facing the sealing end. The sealing wall is arranged around the fuel outlet, and the sealing end is adapted to abut against or separate from the sealing wall.

[0019] The 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. The elastic part is used to apply a force close to the sealing wall to the valve core part.

[0020] Specifically, when the sealing end abuts against the sealing wall, the first fuel passage is cut off from the fuel outlet; when the sealing end is separated from the sealing wall, the first fuel passage is connected to the fuel outlet.

[0021] In one feasible implementation, the regulating component further includes:

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

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

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

[0025] A fuel engine is provided according to a second aspect of the present disclosure, comprising:

[0026] Such as the fuel injection device proposed in any of the first aspects above.

[0027] A vehicle is provided according to a third aspect of the embodiments of this disclosure, comprising:

[0028] As mentioned in any of the second aspects above, fuel engines.

[0029] Compared with the prior art, this disclosure has at least the following beneficial effects: The fuel injection device provided in the embodiments of this disclosure includes a housing assembly, a nozzle assembly, an adjustment assembly, and a drive assembly. The nozzle assembly, adjustment assembly, and drive assembly are all disposed on the housing assembly, and the nozzle assembly can rotate relative to the housing assembly under the drive of the drive assembly. The adjustment assembly can be used to adjust the connection or disconnection between the first fuel channel of the housing 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 entering the fuel inlet of the housing assembly can flow through the first fuel channel and the second fuel channel to the first injection hole and the second injection hole of the nozzle assembly, and be injected outward through the first injection hole and the second injection hole. The connection between the first injection hole and the second injection hole... Since the directions of the first and second injection holes are different, and the conduction directions of both the first and second injection holes intersect the rotation axis of the nozzle assembly, when the nozzle assembly rotates and outputs fuel, on the one hand, the first and second injection holes can rotate around the rotation axis accordingly, thereby enabling fuel injection into different areas circumferentially along the rotation axis. Furthermore, due to the different conduction directions of the first and second injection holes, the distribution range of the fuel ejected from the first and second injection holes can also differ, thereby improving the wide distribution range of the fuel after ejection. On the other hand, during the rotation of the nozzle assembly, the fuel is more likely to form local vortices after being ejected from the first and second injection holes, thereby promoting fuel dispersion, further improving the wide distribution range of the fuel, and enhancing the mixing degree of fuel and air. Based on this, the fuel injection device provided in this embodiment of the present disclosure, when used to inject fuel into the combustion chamber of an engine, can easily make the fuel more widely distributed in the combustion chamber, reduce the distribution of excessively rich or excessively lean fuel areas in the combustion chamber, enhance the degree of fuel-air mixing in the combustion chamber, improve the air utilization rate in the combustion chamber, and facilitate rapid fuel combustion, thereby improving the combustion efficiency of the engine, reducing in-cylinder emissions, and improving the overall performance of the engine. Attached Figure Description

[0030] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of exemplary embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this disclosure. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0031] Figure 1 This is 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 enlarged view of a portion of region A in the middle;

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

[0034] Figure 4 This is 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 correspondence between the reference numerals and component names in the attached drawings is as follows:

[0036] 10' Combustion chamber; 11' Central 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 section; 111 Housing body; 112 Cover; 113 Feed pipe; 114 Feed pipe connector; 115 Return pipe; 120 Filter section;

[0039] 200 nozzle assembly;

[0040] 300 Adjustment assembly; 310 Valve core; 320 Elastic part; 330 Adjustment part;

[0041] 400 Drive assembly; 410 Drive motor; 411 Output shaft; 420 Motor support; 430 Sealing ring;

[0042] 101 Fuel inlet; 102 First fuel passage; 103 Fuel outlet; 104 Sealing wall;

[0043] 201 Second fuel passage; 202 First injection hole; 203 Second injection hole; 204 Connecting end; 205 Exit end;

[0044] 301 mating end; 302 sealing end. Detailed Implementation

[0045] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0046] like Figures 1 to 4 As shown, a fuel injection device 10 is provided according to a first aspect of the present disclosure, comprising: a housing assembly 100 having a fuel inlet 101 and a first fuel passage 102 connected thereto; a nozzle assembly 200 rotatably disposed on the housing assembly 100, having a second fuel passage 201, a first injection hole 202 and a second injection hole 203, the first injection hole 202 and the second injection hole 203 both being connected to the second fuel passage 201, the conduction direction of the first injection hole 202 and the conduction direction of the second injection hole 203 being different, and both intersecting the rotation axis direction of the nozzle assembly 200; an adjustment assembly 300 disposed on the housing assembly 100 for adjusting the connection or disconnection between the first fuel passage 102 and the second fuel passage 201; and a drive assembly 400 disposed on the housing assembly 100 for driving the nozzle assembly 200 to rotate.

[0047] The fuel injection device 10 provided in this embodiment includes the aforementioned housing assembly 100, nozzle assembly 200, adjustment assembly 300, and drive assembly 400. The nozzle assembly 200, adjustment assembly 300, and drive assembly 400 are all disposed on the housing assembly 100. The nozzle assembly 200 can rotate relative to the housing assembly 100 under the drive of the drive assembly 400. The adjustment assembly 300 can be used to adjust the connection or disconnection between the first fuel passage 102 of the housing assembly 100 and the second fuel passage 201 of the nozzle assembly 200. Accordingly, when the first fuel passage 102 and the second fuel passage 201 are connected, the fuel entering the fuel inlet 101 of the housing assembly 100 can flow through the first fuel passage 102 and the second fuel passage 201 to the first injection hole 202 and the second injection hole 203 of the nozzle assembly 200, and be injected outward through the first injection hole 202 and the second injection hole 203.

[0048] The first injection hole 202 and the second injection hole 203 have different conduction directions, and both of their conduction directions intersect with the rotation axis of the nozzle assembly 200. Therefore, 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 accordingly around the rotation axis, enabling fuel injection into different areas circumferentially along the rotation axis. Furthermore, because the conduction directions of the first injection hole 202 and the second injection hole 203 are different, the distribution range of the fuel ejected from the first injection hole 202 and the second injection hole 203 can also differ, improving 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 a swirling manner, and it is easy to form local vortices after ejection from the first injection hole 202 and the second injection hole 203, thereby promoting fuel dispersion, further improving the wide distribution range of the fuel, and enhancing the mixing degree of fuel and air.

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

[0050] It should be noted that, Figure 2 The dashed line L schematically represents the direction of the rotation axis of the nozzle assembly 200, the dashed line L1 schematically represents the conduction direction of the first injection hole 202, and the dashed line L3 schematically represents the conduction direction of the second injection hole 203. Correspondingly, the angle between the conduction direction of the first injection hole 202 and the direction of the rotation axis is α1, and the angle between the conduction direction of the second injection hole 203 and the direction of the rotation axis is α2. It is understood that the fact that the conduction directions of the first injection hole 202 and the second injection hole 203 are different and both intersect the direction of the rotation axis of the nozzle assembly 200 means that the angles α1 and α2 are both greater than 0° and are different from each other. The angle α2 can be 90°, meaning that the conduction direction of the first injection hole 202 or 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 this disclosure embodiment can be used as a component of a fuel engine, or installed in a fuel engine and used to inject fuel into the 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 fuel into the fuel system. Figure 4 Taking the combustion chamber 10' shown as an example, when fuel is injected into the combustion chamber 10', 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. Correspondingly, the part of the combustion chamber 10' located above the central boss is the central boss region. 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 guiding direction of one of the aforementioned first injection hole 202 and second injection hole 203 can be arranged to intersect the top wall of the aforementioned central boss, and a... The conduction direction of the other is intersected with the peripheral wall of the combustion chamber 10', so that when the fuel injection device 10 injects fuel, the fuel can be distributed 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', reducing the distribution of the fuel-rich or fuel-lean areas in the combustion chamber 10', enhancing the degree of fuel mixing with the air in the combustion chamber 10', improving the air utilization rate in the combustion chamber 10', and facilitating rapid fuel combustion, thereby improving the combustion efficiency of the engine, reducing the in-cylinder emissions of the engine, and improving the overall performance of the engine.

[0052] It is understandable that, in practical applications, the specific number, direction of conduction, size and other parameters of the aforementioned first injection hole 202 and second injection hole 203 can be selected according to actual needs, such as fuel characteristics, injection pressure, injection timing and combustion chamber 10' profile. No further restrictions are imposed here.

[0053] It is understandable that when the first fuel passage 102 and the second fuel passage 201 are cut off, the aforementioned first injection hole 202 and second injection hole 203 will stop ejecting 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 less 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 less than the distance from the discharge end of the second injection hole 203 to the rotation axis.

[0055] In this technical solution, the guiding 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 less than the distance from the discharge end of the first injection hole 202 to the rotation axis. Based on the above 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 roughly conical distribution around the rotation axis, and diffuses to the circumferential and bottom areas of the combustion chamber 10' after ejection, 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 or fuel-lean areas in the combustion chamber 10', enhancing the degree of fuel mixing with the air in the combustion chamber 10', and improving the air utilization rate in the combustion chamber 10'.

[0056] In this technical solution, the guiding 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 less 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 through the second injection hole 203, the fuel output by the second injection hole 203 is easy to form a roughly conical distribution around the rotation axis, and diffuses to the circumferential and bottom areas of the combustion chamber 10' after ejection, 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 or fuel-lean areas in the combustion chamber 10', enhancing the degree of mixing between 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 guiding direction of the first injection hole 202 and the guiding direction of the second injection hole 203 can both be inclined to the direction of the rotation axis. The distance from the feed end of the first injection hole 202 to the rotation axis is set to be less 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 less than the distance from the discharge end of the second injection hole 203 to the rotation axis. Based on the aforementioned 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 easily forms a ring around the rotation axis. The fuel is distributed in a roughly conical shape and diffuses into the circumferential and bottom regions of the combustion chamber 10' after ejection. Since the conduction directions of the first injection hole 202 and the second injection hole 203 are different, the distribution range of the fuel output from the first injection hole 202 and the second injection hole 203 can be different and compensate for each other. This helps to expand the distribution range of the fuel output from the nozzle assembly 200 to a greater extent, thereby reducing the distribution of excessively rich or excessively lean fuel regions in the combustion chamber 10', enhancing the mixing degree of fuel with air in the combustion chamber 10', and improving the air utilization rate in the combustion chamber 10'.

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

[0059] In some examples, the nozzle assembly 200 has a connecting end 204 and an ejection end 205 at its two ends along the rotation axis direction. The connecting end 204 is rotatably disposed on the housing assembly 100, and the ejection end 205 is formed with a first injection hole 202 and a second injection hole 203. Both the first injection hole 202 and the second injection hole 203 are used to communicate with the combustion chamber 10', and the rotation axis direction is used to extend along the depth direction of the combustion chamber 10'.

[0060] In this technical solution, the aforementioned first injection hole 202 and second injection hole 203 can be opened at the exit end 205 of the nozzle assembly 200. In practical applications, both the first injection hole 202 and the second injection hole 203 are connected to the combustion chamber 10', and the rotation axis of the nozzle assembly 200 extends along the depth direction of the combustion chamber 10'. Based on the aforementioned arrangement, 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 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 or fuel-lean regions in the combustion chamber 10', enhancing the mixing degree of fuel with the air in the combustion chamber 10', and improving the air utilization rate in the combustion chamber 10'.

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

[0062] It is understood that, in practical applications, a sliding seal fit can be configured between the aforementioned connecting end 204 and the aforementioned housing assembly 100 to reduce the risk of fuel leakage. For example, the aforementioned connecting end 204 and the housing assembly 100 can form a sliding seal fit with a sealing surface through dimensional tolerances.

[0063] For example, the aforementioned rotation axis can be arranged along the axial direction of the combustion chamber 10' so that the ejector end 205 is arranged corresponding to the central boss region 11' of the combustion chamber 10', thereby increasing the fuel concentration in the central boss region 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 direction of the rotation axis is greater than the angle a2 between the conduction direction of the second injection hole 203 and the direction of the rotation axis, and the ejection 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 ejection end 205 is arranged facing the inner bottom wall 12' of the combustion chamber 10'. At the same time, the aforementioned included angle a1 can be set to be greater than the aforementioned included angle a2. Based on the aforementioned arrangement, when the nozzle assembly 200 rotates and outputs fuel, the fuel is easy to diffuse to the circumferential and bottom areas of the combustion chamber 10' after being ejected. Since the aforementioned included angle a1 is greater than the aforementioned included angle a2, the fuel output from the first injection hole 202 is easy to diffuse to the circumferential area of ​​the combustion chamber 10', and the fuel output from the second injection hole 203 is easy to diffuse to the bottom of the combustion chamber 10'. The distribution range of the fuel output from the first injection hole 202 and the second injection hole 203 can form a difference and compensate for each other, which is beneficial to expand the distribution range of the fuel output from the nozzle assembly 200 to a greater extent, thereby reducing the distribution of the fuel-rich or fuel-lean areas in the combustion chamber 10', enhancing the degree of mixing between 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 housing assembly 100 includes: a housing portion 110 having a fuel inlet 101 and a first fuel passage 102; a nozzle assembly 200 rotatably disposed at one end of the housing portion 110; a drive assembly 400 disposed at the other end of the housing portion 110; the housing portion 110 also having a fuel outlet 103 located at one end of the housing portion 110 connected to the nozzle assembly 200, and the fuel outlet 103 communicating with the second fuel passage 201; the drive assembly 400 including a drive motor 410, the output shaft 411 of the drive motor 410 passing through the fuel outlet 103 and connected to the nozzle assembly 200; and a filter portion 120 disposed within the first fuel passage 102; wherein, the adjustment assembly 300 is used to adjust the connection or disconnection between the first fuel passage 102 and the fuel outlet 103.

[0067] In this technical solution, the housing assembly 100 may include the aforementioned housing portion 110 and filter portion 120. Based on the aforementioned configuration, on the one hand, the structural compactness of the fuel injection device 10 can be improved, which is conducive to improving the miniaturization level of the fuel injection device 10 and reducing the installation difficulty and operating 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 conducive to further ensuring the combustion performance and emission characteristics of the engine.

[0068] It is understood that the aforementioned filter unit 120 can be, but is not limited to, a fuel filter.

[0069] For example, the aforementioned housing portion 110 may include a housing body 111, a cover 112, a feed pipe 113, a feed pipe connector 114, and a return pipe 115; the cover 112 is detachably disposed on the housing body 111, the aforementioned drive motor 410 is disposed on the cover 112, and the output shaft 411 of the drive motor 410 passes through the cover 112 and the housing body 111 and is connected to the nozzle assembly 200; both the feed pipe 113 and the return pipe 115 are connected at one end to the housing body 111, and the other end extends away from the housing body 111, the return pipe 115 forms a return channel, and the return channel communicates with the interior of the housing body 111; the feed pipe connector 114 is sleeved on the feed pipe 113 and is used to connect to the external... The pipeline includes: a fuel inlet 101 formed at the end of the feed pipe 113 away from the housing body 111; a first fuel passage 102 partially formed in the feed pipe 113 and partially formed in the housing body 111; a fuel outlet 103 formed at the end of the housing body 111 away from the cover 112; and the first fuel passage 102 extending from the end away from the fuel inlet 101 toward the location of the fuel outlet 103; and at least a portion of the adjustment assembly 300 located between the end of the first fuel passage 102 away from the fuel inlet 101 and the fuel outlet 103, and used to connect or disconnect the connection between the first fuel passage 102 and the fuel outlet 103.

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

[0071] like Figure 1 and Figure 2As shown, in some examples, the regulating assembly 300 includes: a valve core 310 movably sleeved on the output shaft 411, the valve core 310 being sealingly connected between the output shaft 411 and the housing portion 110, the two ends of the valve core 310 along the axial direction of the output shaft 411 being a mating end 301 and a sealing end 302, respectively, and the housing portion 110 further forming a sealing wall 104 facing the sealing end 302, the sealing wall 104 being arranged around the fuel outlet 103, and the sealing end 302 being adapted to abut against or separate from the sealing wall 104. The elastic part 320 is sleeved on the output shaft 411. One end of the elastic part 320 is connected to the housing part 110 and the other end is connected to the mating end 301. The elastic part 320 is used to apply a force close to the sealing wall 104 to the valve core part 310. When the sealing end 302 abuts against the sealing wall 104, the first fuel passage 102 and the fuel outlet 103 are cut off. When the sealing end 302 is separated from the sealing wall 104, the first fuel passage 102 and the fuel outlet 103 are connected.

[0072] In this technical solution, the regulating component 300 may include the aforementioned valve core portion 310 and elastic portion 320. It is understood that at least a portion of the valve core portion 310 is located between the first fuel passage 102 and the fuel outlet 103, and the valve core portion 310 is adapted to overcome the force of the elastic portion 320 under the action of fuel pressure within the first fuel passage 102 and move towards 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, thereby cutting off the connection between the first fuel passage 102 and the fuel outlet 103. The connection between the three points prevents fuel from flowing into the nozzle assembly 200. Correspondingly, the fuel pressure in the first fuel channel 102 can be adjusted by regulating the pressure of the fuel entering through the fuel inlet 101. This causes the sealing end 302 to separate from the sealing wall 104 under the action of the fuel pressure in the first fuel channel 102, thereby connecting the first fuel channel 102 and the fuel outlet 103. This allows fuel to flow to the nozzle assembly 200 to achieve fuel injection, which in turn helps to reduce the difficulty of output control of the fuel injection assembly and improves the ease of use and controllability of the fuel injection assembly.

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

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

[0075] For example, the aforementioned sealing end 302 is generally conical in shape, and the aforementioned sealing wall 104 is generally conical in shape to match the aforementioned sealing end 302.

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

[0077] In this technical solution, the adjustment assembly 300 may further include the aforementioned adjustment section 330. Based on the aforementioned configuration, the distance between the adjustment section 330 and the sealing wall 104 can be adjusted by changing the position of the adjustment section 330 in the threaded axial direction of the housing assembly 100. This changes the compression amount of the elastic section 320 and the magnitude of the force applied to the valve core section 310, making it easier to adjust the fuel pressure required when the valve core section 310 separates from the sealing wall 104. This further improves the controllability and flexibility of the adjustment assembly 300 in practical applications.

[0078] For example, when the housing portion 110 includes the aforementioned cover 112, the aforementioned cover 112 may be formed with an internal thread, and the aforementioned adjustment portion 330 may be formed with an external thread adapted to the aforementioned internal thread, and the adjustment portion 330 is threadedly connected to the aforementioned cover 112.

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

[0080] In this technical solution, multiple first injection holes 202 can be provided, and the multiple first injection holes 202 are 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. 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 around the rotation axis and diffuses towards the circumferential and bottom regions of the combustion chamber 10' after ejection. This is beneficial to further expand the distribution range of the fuel output by the first injection holes 202, thereby reducing the distribution of excessively rich or excessively lean fuel regions in the combustion chamber 10', enhancing the mixing degree of fuel with air in the combustion chamber 10', and improving the air utilization rate in the combustion chamber 10'.

[0081] In this technical solution, multiple second injection holes 203 can be provided, and the multiple second injection holes 203 are 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. 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 around the rotation axis and diffuses towards the circumferential and bottom regions of the combustion chamber 10' after ejection. This is beneficial to further expand the distribution range of the fuel output by the second injection holes 203, thereby reducing the distribution of excessively rich or excessively lean fuel regions in the combustion chamber 10', enhancing the mixing degree of fuel with air in the combustion chamber 10', and improving the air utilization rate in the combustion chamber 10'.

[0082] In this technical solution, multiple first injection holes 202 and multiple second injection holes 203 can be provided, and they are all arranged at intervals around the rotation axis; based on the aforementioned 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 less than the sum of the conduction areas of the first injection holes 202, thereby creating a difference in the fuel flow rates output by the first injection holes 202 and the second injection holes 203.

[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 practical applications, the fuel in the first injection hole 202 can be partially diverted to the second injection hole 203, which facilitates the access of fuel to the second injection hole 203 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 together. The aforementioned first injection hole 202 and second injection hole 203 are formed in the nozzle body. The connecting shaft has an external thread, and the output shaft 411 of the drive motor 410 has an internal thread. The connecting shaft is threadedly connected to the output shaft 411. Exemplarily, the loosening direction of the thread on the connecting shaft may be opposite to the rotation direction of the output shaft 411, thereby preventing the nozzle assembly 200 from becoming dislodged from the output shaft 411 during rotation.

[0086] A fuel engine is provided according to a second aspect of the present disclosure, comprising: a fuel injection device as described in any of the first aspects above.

[0087] Since the fuel engine provided in this embodiment includes a fuel injection device as described in any of the first aspects above, it possesses all the beneficial effects of such a fuel injection device, which will not be elaborated here.

[0088] A vehicle is provided according to a third aspect of the present disclosure, comprising: a fuel engine as described in any of the second aspects above.

[0089] Since the vehicle provided in this embodiment includes a fuel engine as described in any of the second aspects above, it possesses all the beneficial effects of such a fuel engine, which will not be elaborated here.

[0090] In this disclosure, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise expressly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0091] In the description of this disclosure, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0092] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0093] The above are merely preferred embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A fuel injection device, characterized in that, include: The housing assembly has a connected fuel inlet and a first fuel passage; The nozzle assembly is rotatably disposed on the housing assembly and forms a second fuel channel, 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 channel. The conduction directions of the first injection hole and the second injection hole are different, and both intersect the rotation axis direction of the nozzle assembly. An adjustment component, disposed in the housing assembly, is used to adjust the connection or disconnection between the first fuel passage and the second fuel passage; A drive assembly, disposed in the housing assembly, is used to drive the nozzle assembly to rotate; The housing assembly includes: The housing portion has the fuel inlet and the first fuel passage. The nozzle assembly is rotatably disposed at one end of the housing portion, and the drive assembly is disposed at the other end of the housing portion. The housing portion also has a fuel outlet located at one end of the housing portion connected to the nozzle assembly and communicating with the second fuel passage. The drive assembly includes a drive motor, and the output shaft of the drive motor passes through the fuel outlet and is connected to the nozzle assembly. A filter section is disposed within the first fuel passage; The regulating component is used to adjust the connection or disconnection between the first fuel channel and the fuel output port.

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 less than the distance from the discharge end of the first injection hole to the rotation axis; and / or 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 less 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 nozzle assembly has a connecting end and an ejection end at its two ends along the rotation axis. The connecting end is rotatably disposed on the housing assembly. The ejection end has a first injection hole and a second injection hole. Both the first injection hole and the second injection hole are used to communicate with the combustion chamber. 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 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 ejection end is arranged toward the inner bottom wall of the combustion chamber.

5. The fuel injection device according to claim 1, characterized in that, The adjustment component includes: The valve core is movably sleeved on the output shaft. The valve core is sealed between the output shaft and the housing. The two ends of the valve core along the axial direction of the output shaft are a mating end and a sealing end, respectively. The housing also forms a sealing wall facing the sealing end. The sealing wall is arranged around the fuel outlet, and the sealing end is adapted to abut against or separate from the sealing wall. 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. The elastic part is used to apply a force close to the sealing wall to the valve core part. Specifically, when the sealing end abuts against the sealing wall, the first fuel passage is cut off from the fuel outlet; when the sealing end separates from the sealing wall, the first fuel passage is connected to the fuel outlet.

6. The fuel injection device according to claim 5, characterized in that, The adjustment component further includes: An adjusting part is threadedly connected to the housing part, and the end of the elastic part away from the valve core part is connected to the adjusting part. The axial direction of the thread of the adjusting part is consistent with the axial direction of the output shaft.

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

8. A fuel engine, characterized in that, include: The fuel injection device as claimed in any one of claims 1 to 7.

9. A vehicle, characterized in that, include: The fuel engine as described in claim 8.

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