All-terrain vehicle

Abstract

The present application discloses an all-terrain vehicle. The all-terrain vehicle comprises: a frame, a power system, a transmission system, a locomotion system, a cooling system, and a vehicle door assembly; the frame comprises a rear frame; the cooling system is supported by the rear frame and comprises a cooling module at least partially connected to the power system and a flow guide mechanism for guiding air to the cooling module, and the flow guide mechanism comprises a flow guide housing and air inlet members arranged at two sides of the flow guide housing; the flow guide housing defines an air chamber, and the air inlet members are communicated with the air chamber; and the cooling module is at least partially arranged in the air chamber. A transverse plane perpendicular to the length direction of the all-terrain vehicle is defined; the projections of the air inlet members on the transverse plane in the length direction of the all-terrain vehicle are air inlet member projections, and the projection of the vehicle door assembly on the transverse plane in the length direction of the all-terrain vehicle is a vehicle door projection, the vehicle door projection being located between the two air inlet member projections. By means of the arrangement, the air inlet volume of the vehicle is increased, thereby achieving the objective of improving the cooling effect.

Description

All-terrain vehicles

[0001] Related applications

[0002] This application claims priority to Chinese patent application number 202311130855.1, filed on September 4, 2023, with invention name “All Terrain Vehicle”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of vehicle engineering, and in particular to an all-terrain vehicle. Background Art

[0004] All-terrain vehicles (ATVs), which offer excellent roadability and a lot of fun, are increasingly popular among consumers. SSVs (Side by Side Vehicles) and UTVs (Utility Vehicles) are two types of ATVs that primarily have semi-enclosed cabs.

[0005] The cooling system is a crucial component of all-terrain vehicles (ATVs), and its efficiency significantly impacts the vehicle's powertrain. However, the cooling system's efficiency is relatively low, making it difficult to meet the cooling requirements of large-displacement ATVs.

[0006] Summary of the Invention

[0007] In order to address the deficiencies of the prior art, an object of the present invention is to provide an all-terrain vehicle having a cooling system with high cooling efficiency.

[0008] To achieve the above objectives, this application adopts the following technical solutions:

[0009] An all-terrain vehicle comprises a frame, the frame comprising a rear frame arranged at the rear of the all-terrain vehicle; a body covering, the body covering being at least partially arranged on the frame; a power system, the power system being supported by the frame; a transmission system, the transmission system being at least partially connected to the power system; a running assembly, the running assembly being at least partially connected to the transmission system; a cooling system, the cooling system being at least partially connected to the power system; a door assembly, the door assembly being connected to the frame; the cooling system being supported by the rear frame, the cooling system comprising a cooling module at least partially connected to the power system and a guide mechanism for guiding air for the cooling module, the guide mechanism comprising a guide shell and air inlet members arranged on both sides of the guide shell; the guide shell encloses an air chamber, the air inlet member and the air chamber are interconnected; the cooling module is at least partially arranged in the air chamber; a transverse plane perpendicular to the length direction of the all-terrain vehicle is defined, the projection of the air inlet member on the transverse plane along the length direction of the all-terrain vehicle is the air inlet member projection, the projection of the door assembly on the transverse plane along the length direction of the all-terrain vehicle is the door projection, and the door projection is located between the two air inlet member projections.

[0010] An all-terrain vehicle comprises a frame, the frame comprising a rear frame arranged at the rear of the all-terrain vehicle; a body covering, the body covering being at least partially arranged on the frame; a power system, the power system being arranged in the rear frame, and the rear frame supporting the power system; a transmission system, the transmission system being at least partially connected to the power system; a traveling assembly, the traveling assembly being arranged below the frame, and the traveling assembly being at least partially connected to the transmission system; a cooling system, the cooling system being at least partially connected to the power system; the cooling system being arranged in the rear frame, the cooling system comprising a cooling module at least partially connected to the power system and a guide mechanism for guiding air for the cooling module, the guide mechanism extending basically along the width direction of the all-terrain vehicle, the guide mechanism comprising a guide shell and an air inlet member arranged at at least one end of the guide shell, an air chamber being formed inside the guide shell, the air inlet member and the air chamber being communicated with each other; the cooling module being at least partially arranged in the air chamber.

[0011] An all-terrain vehicle comprises a frame, the frame comprising a rear frame arranged at the rear of the all-terrain vehicle; a body covering, the body covering being at least partially arranged on the frame; a power system, the power system being supported by the frame; a transmission system, the transmission system being at least partially connected to the power system; a running assembly, the running assembly being at least partially connected to the transmission system; a cooling system, the cooling system being at least partially connected to the power system; a door assembly, the door assembly being connected to the frame; the cooling system being supported by the rear frame, the cooling system comprising a cooling module at least partially connected to the power system and a guide mechanism for guiding air for the cooling module, the guide mechanism comprising a guide shell and air inlet members arranged on both sides of the guide shell; a transverse plane perpendicular to the length direction of the all-terrain vehicle is defined, the projection of the air inlet member on the transverse plane along the length direction of the all-terrain vehicle is the air inlet member projection, the projection of the door assembly on the transverse plane along the length direction of the all-terrain vehicle is the door projection, and the door projection is located between the two air inlet member projections. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] FIG1 is a schematic diagram of an all-terrain vehicle according to an embodiment of the present application;

[0013] FIG2 is a schematic diagram of a power system and a transmission system in an embodiment of the present application;

[0014] FIG3 is a front view of the connection structure between the vehicle frame and the suspension assembly in an embodiment of the present application;

[0015] FIG4 is a schematic diagram of the connection structure between the transmission system and the frame in an embodiment of the present application;

[0016] FIG5 is an enlarged view of point A in FIG4 in an embodiment of the present application;

[0017] FIG6 is an exploded view of the front axle assembly in an embodiment of the present application;

[0018] FIG7 is a schematic structural diagram of a powertrain in an embodiment of the present application;

[0019] FIG8 is a side view of a powertrain according to an embodiment of the present application;

[0020] FIG9 is a schematic diagram of the connection structure between the suspension assembly and the powertrain in an embodiment of the present application;

[0021] FIG10 is a schematic structural diagram of a fuel tank according to an embodiment of the present application;

[0022] FIG11 is a schematic cross-sectional view of the structure of a fuel tank according to an embodiment of the present application;

[0023] FIG12 is a schematic structural diagram of another fuel tank and vehicle frame according to an embodiment of the present application;

[0024] FIG13 is a schematic structural diagram of a cooling module and a vehicle frame in an embodiment of the present application;

[0025] FIG14 is a side view schematic diagram of a cooling module in an embodiment of the present application;

[0026] FIG15 is a schematic top view of a cooling module in an embodiment of the present application;

[0027] FIG16 is a schematic diagram showing the position of a cooling module in an embodiment of the present application;

[0028] FIG17 is a schematic top view of a flow guide mechanism in an embodiment of the present application;

[0029] FIG18 is a side view schematic diagram of a flow guide mechanism in an embodiment of the present application;

[0030] FIG19 is a front view schematic diagram of a flow guide mechanism in an embodiment of the present application;

[0031] FIG20 is a schematic diagram of a fixed frame structure of a cooling module in an embodiment of the present application;

[0032] Figure 21 is a schematic structural diagram of a cooling kettle in an embodiment of the present application. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the specific embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0034] The present application provides an all-terrain vehicle 100 as shown in FIG1 , which includes a frame 11, a body cover 12, a suspension assembly 13, and a running assembly 14. To clearly define the technical solution of the present application, the front side, rear side, left side, right side, upper side, and lower side are also defined as shown in FIG1 .

[0035] In the description of this application, it should be understood that the term "length direction" refers to the front-to-back direction of the vehicle parallel to the driver of the all-terrain vehicle 100 when the driver is in the driving state, the term "width direction" refers to the left-to-right direction of the vehicle parallel to the driver of the all-terrain vehicle 100 when the driver is in the driving state, and the term "height direction" refers to the up-down direction of the vehicle parallel to the driver of the all-terrain vehicle 100 when the driver is in the driving state.

[0036] As shown in Figures 1 and 2, as one implementation, an all-terrain vehicle 100 also includes a power system 15 and a transmission system 16. A frame 11 forms the main structure of the all-terrain vehicle 100. The frame 11 and the body panel 12 surround a driver's cabin 101, in which the user sits. Other systems are directly or indirectly connected to the frame 11. The body panel 12 is at least partially disposed on the outside of the frame 11, covering most of the frame 11. A suspension assembly 13 is connected to the frame 11 and connects a running assembly 14 to the frame 11. The power system 15 is at least partially connected to the frame 11 to provide propulsion for the all-terrain vehicle 100. The transmission system 16 is in transmission connection with the power system 15, receiving the driving force from the power system 15 and transmitting it to the running assembly 14. The running assembly 14 is at least partially disposed below the frame 11 and directly or indirectly receives the driving force from the transmission system 16 to propel the all-terrain vehicle 100. As shown in FIG1 , the travel assembly 14 includes a front wheel 141 located at the front of the all-terrain vehicle 100 and a rear wheel 142 located at the rear of the all-terrain vehicle 100. The all-terrain vehicle 100 also includes door assemblies 17 located on both sides of the all-terrain vehicle 100. The all-terrain vehicle 100 in the embodiments of the present application can be any type of all-terrain vehicle, including an SSV and a UTV.

[0037] As shown in FIG. 2 , as an implementation, the vehicle frame 11 includes a rear frame 111 disposed behind the cockpit 101 , and the power system 15 and the transmission system 16 are at least partially disposed on the rear frame 111 .

[0038] As shown in Figure 3, as an implementation method, the suspension assembly 13 includes a front suspension 131, and the front wheel 141 also includes a left front wheel 1411 arranged on the left side of the frame 11 and a right front wheel 1412 arranged on the right side of the frame 11, wherein the left front wheel 1411 and the right front wheel 1412 are both connected to the frame 11 through the front suspension 131.

[0039] As an implementation method, the transmission system 16 includes a drive shaft (not shown) and a front axle assembly 161. The two ends of the drive shaft are respectively connected to the power system 15 and the front axle assembly 161, thereby transmitting the power output of the power system 15 to the front axle assembly 161. Among them, the front axle assembly 161 includes at least a differential, a differential case, a motor and a transmission gear. The differential and the motor are arranged in the differential case, and the motor is used to control the differential to switch between a differential state and a locked state. It should be noted that in the differential state, the left front wheel 1411 and the right front wheel 1412 can achieve differential rotation, thereby reducing wear on the left front wheel 1411 and / or the right front wheel 1412. In the locked state, the left front wheel 1411 and the right front wheel 1412 can maintain constant speed rotation, so that the vehicle has stronger passability. The differential is connected to the drive shaft via a transmission gear.

[0040] As an implementation method, the transmission system 16 also includes a left half-shaft 162 and a right half-shaft 163, and the front axle assembly 161 includes a left output end and a right output end, wherein the left and right ends of the left half-shaft 162 are respectively connected to the left front wheel 1411 and the left output end, and the left and right ends of the right half-shaft 163 are respectively connected to the right front wheel 1412 and the right output end, so that the front axle assembly 161 can transmit power to the front wheel 141 through the half-shaft, thereby driving the front wheel 141 to rotate.

[0041] As shown in Figures 4 and 5, as one implementation, the vehicle frame 11 includes a front axle mounting bracket 112. The front axle mounting bracket 112 is disposed at the front portion of the vehicle frame 11 and surrounds the front axle assembly 161. The front axle mounting bracket 112 includes a first mounting portion 1121 and a second mounting portion 1122. The first mounting portion 1121 is located rearward of the second mounting portion 1122 in the lengthwise direction of the all-terrain vehicle 100. The front axle mounting bracket 112 is connected to the rear end of the front axle assembly 161 via the first mounting portion 1121, and is further connected to the front end of the front axle assembly 161 via the second mounting portion 1122. The connection direction between the first mounting portion 1121 and the front axle assembly 161 is substantially parallel to the width of the all-terrain vehicle 100, while the connection direction between the second mounting portion 1122 and the front axle assembly 161 is substantially parallel to the height of the all-terrain vehicle 100.

[0042] As shown in Figures 5 and 6 , as one implementation, front axle assembly 161 is connected to first mounting portion 1121 via a first fastener 1123. The axis of first fastener 1123 corresponds to the connection direction between first mounting portion 1121 and front axle assembly 161, i.e., the axis of first fastener 1123 is substantially parallel to the width direction of ATV 100. Front axle assembly 161 is connected to second mounting portion 1122 via a second fastener 1124. The axis of second fastener 1124 corresponds to the connection direction between second mounting portion 1122 and front axle assembly 161, i.e., the axis of second fastener 1124 is substantially parallel to the height direction of ATV 100. It should be noted that during the assembly of front axle assembly 161, since front axle assembly 161 needs to remain connected to drive shaft 166 and be pushed lengthwise into the assembly position, pushing front axle assembly 161 is foreseeably difficult. The above arrangement prevents the front axle assembly 161 from interfering with the front axle mounting bracket 112 during assembly, thereby reducing the difficulty of assembling the front axle assembly 161. The first fastener 1123 and the second fastener 1124 can be configured as bolts or screws.

[0043] As an implementation, first mounting portion 1121 is configured as a sheet metal member having an end surface substantially perpendicular to the width direction of ATV 100. Front axle assembly 161 abuts against the end surface of first mounting portion 1121 along the width direction, thereby increasing the contact area between front axle assembly 161 and first mounting portion 1121, strengthening the connection strength between front axle assembly 161 and first mounting portion 1121, and thereby improving the connection stability between front axle assembly 161 and front axle mounting bracket 112.

[0044] As an implementation, the second mounting portion 1122 includes an axial hole extending through the front axle mounting bracket 112 along the height direction of the all-terrain vehicle 100. The axial direction of the axial hole aligns with the axial direction of the second fastener 1124. Since the front axle assembly 161 needs to move from the second mounting portion 1122 toward the first mounting portion 1121 during connection with the front axle mounting bracket 112, the above arrangement prevents interference between the front axle assembly 161 and the second mounting portion 1122 during this movement, thereby reducing the difficulty of assembling the front axle assembly 161 and improving its assembly efficiency.

[0045] As shown in FIG6 , as one implementation, the vehicle frame 11 further includes a movable connector 113, which is at least partially disposed above the front axle assembly 161. The movable connector 113 is detachably connected to the front axle mounting bracket 112 and the front axle assembly 161, respectively. While the front axle assembly 161 is connected to the front axle mounting bracket 112 via the first mounting portion 1121 and the second mounting portion 1122, the front axle assembly 161 can also be connected to the front axle mounting bracket 112 via the movable connector 113. This arrangement improves the connection strength between the front axle assembly 161 and the front axle mounting bracket 112, thereby enhancing the operational stability of the front axle assembly 161.

[0046] As an implementation, the movable link 113 is at least partially disposed forward of the left and right axle shafts 162, 163, as viewed across the width of the ATV 100. A transmission center plane 201, perpendicular to the length of the ATV 100 and passing through the connection point between the front axle assembly 161 and the left axle shaft 162, is defined. As viewed across the width of the ATV 100, the movable link 113 is at least partially disposed forward of the transmission center plane 201. This prevents interference between the movable link 113 and opposing components, such as the left and right tie rods and the steering gear. This also ensures uniform load distribution on the front axle assembly 161, improving the stability of the ATV 100 during use.

[0047] As shown in FIG5 , as one implementation, the front axle mounting bracket 112 includes a mounting tube 1125 extending along its length. The mounting tube 1125 is disposed below the front axle assembly 161 and is used to support the front axle assembly 161. A first mounting portion 1121 and a second mounting portion 1122 are both disposed on the mounting tube 1125, with the first mounting portion 1121 welded to the mounting tube 1125. The axial hole of the second mounting portion 1122 extends through the mounting tube 1125. The mounting tube 1125 includes a sliding region for the front axle assembly 161 to slide. The sliding region is disposed in front of the first mounting portion 1121, and the front axle assembly 161 can slide on the sliding region. The sliding region extends along its length, and the length of the sliding region is greater than or equal to the length of the front axle assembly 161.

[0048] As an implementation, the first mounting portion 1121 is at least partially disposed behind the front axle assembly 161. During assembly of the front axle assembly 161, when the front axle assembly 161 slides to the assembly position, the first mounting portion 1121 abuts against the front axle assembly 161. The first mounting portion 1121, disposed behind the front axle assembly 161, limits the position of the front axle assembly 161 in the longitudinal direction of the all-terrain vehicle 100. This allows the front axle assembly 161 to be connected to the first mounting portion 1121 and the second mounting portion 1122, respectively. Because the front axle assembly 161 is first connected to the drive shaft 166 before being connected to the vehicle frame 11, resulting in a relatively large overall weight, this arrangement can reduce the difficulty of assembling the front axle assembly 161 with the front axle mounting bracket 112.

[0049] As shown in FIG7 , as one implementation, the power system 15 includes an engine 151 for providing a power source, the transmission system 16 includes a speed reducer 164 and a transmission 165, and the all-terrain vehicle 100 also includes an accessory gear train 18 connected to the engine 151. The all-terrain vehicle 100 includes a powertrain 19 at least partially disposed on the rear frame 111. The powertrain 19 comprises at least the aforementioned engine 151, speed reducer 164, transmission 165, and accessory gear train 18. The transmission 165 and accessory gear train 18 are respectively disposed on the left and right sides of the engine 151 and are respectively connected to the crankshaft (not shown) of the engine 151. The engine 151 is capable of driving the transmission 165 and accessory gear train 18, which are respectively disposed on the left and right sides, via the crankshaft. The speed reducer 164 is disposed behind the engine 151 and is in transmission connection with the engine 151. The engine 151 includes an air intake 1511 and an exhaust port (not shown). The air intake 1511 faces generally toward the front of the ATV 100, while the exhaust port faces generally toward the rear of the ATV 100. The powertrain 19 also includes a supercharger 191 connected to the exhaust port. Supercharger 191 is at least partially disposed between the engine 151 and the speed reducer 164, thereby improving the compactness of the vehicle. This arrangement reduces the impact of high-temperature, high-pressure exhaust from the engine 151 on the cabin 101, thereby enhancing the comfort of the cabin 101.

[0050] As one implementation, powertrain 19 also includes an air filter 192 and a muffler 193. Air filter 192 is used to absorb and filter air and is directly or indirectly connected to the air intake 1511 of engine 151. Muffler 193 is located at the rear of powertrain 19 and is used to filter high-temperature, high-pressure gas discharged from the exhaust port. As can be seen from the foregoing, because powertrain 19 includes supercharger 191, engine 151 can turbocharge the air absorbed by air filter 192. Air filter 192 is connected to the air intake 1511 of engine 151 via supercharger 191.

[0051] As shown in FIG8 , as one implementation, the ATV 100 further includes a suspension assembly 21, through which the powertrain 19 is connected to the rear frame 111. The suspension assembly 21 is at least partially disposed in front of the powertrain 19 and also at least partially disposed in rear of the powertrain 19. When viewed across the width of the ATV 100, an air filter 192 is at least partially disposed in front of the engine 151. The distance from the front end of the air filter 192 to the rear end of the muffler 193 along the length of the powertrain 19 is defined as the distribution distance D1. The maximum distance between the suspension assemblies 21 along the length of the powertrain 19 is defined as the assembly distance D2 of the powertrain 19.

[0052] As shown in FIG9 , in this embodiment of the present application, the suspension assembly 21 includes a first suspension 211 and a second suspension 212, disposed at the front side of the powertrain 19. The first suspension 211 is located to the right of the second suspension 212. The suspension assembly 21 also includes a third suspension 213, disposed at the rear side of the powertrain 19. The elastic center of the first suspension 211 is located at the front end of the powertrain 19, compared to the elastic centers of the second suspension 212 and the third suspension 213. The elastic center of the third suspension 213 is located at the rear end of the powertrain 19, compared to the elastic centers of the first suspension 211 and the second suspension 212. Therefore, the assembly distance D2 of the powertrain 19 is the lengthwise distance between the elastic centers of the first suspension 211 and the third suspension 213.

[0053] As an optional implementation, the ratio of the distribution distance D1 of the powertrain 19 to the assembly distance D2 of the powertrain 19 ranges from 1.3 to 1.9. Furthermore, the ratio of the distribution distance D1 of the powertrain 19 to the assembly distance D2 of the powertrain 19 ranges from 1.4 to 1.7. More preferably, the ratio of the distribution distance D1 of the powertrain 19 to the assembly distance D2 of the powertrain 19 is equal to 1.6. Because the powertrain 19 requires a certain amount of layout space, if the ratio of the distribution distance D1 of the powertrain 19 to the assembly distance D2 of the powertrain 19 is too large, the suspension assembly 21 will provide poor support for the powertrain 19, affecting the stability of the connection between the powertrain 19 and the rear frame 111. If the ratio of the distribution distance D1 of the powertrain 19 to the assembly distance D2 of the powertrain 19 is too small, the gaps between the various components of the powertrain 19 will be too small, which will be detrimental to the layout of the powertrain 19. Through the above arrangement, the rationality of the layout of the power assembly 19 is improved, the supporting effect of the suspension assembly 21 on the power assembly 19 is ensured, and the stability of the power assembly 19 is improved.

[0054] As shown in Figures 7 and 8 , as one embodiment, the powertrain 19 further includes an intercooler 194, which is at least partially positioned above the engine 151 and connected to the air intake 1511. The all-terrain vehicle 100 further includes a seat assembly 22, which is positioned in front of the intercooler 194. A pre-set space 106 for air circulation is provided in front of the intercooler 194, i.e., between the intercooler 194 and the seat assembly 22. The pre-set space 106 has a depth D3 extending in the longitudinal direction ranging from 128 mm to 284 mm. As one embodiment, the depth D3 of the pre-set space 106 extends in the longitudinal direction ranging from 140 mm to 256 mm. As one embodiment, the depth D3 of the pre-set space 106 extends in the longitudinal direction ranging from 152 mm to 228 mm. If the depth D3 of the pre-set space 106 along the longitudinal direction is too large, the intercooler 194 may interfere with the muffler 193, or some space in the cockpit 101 may be sacrificed, affecting the comfort of rear-seat passengers. If the depth D3 of the pre-set space 106 along the longitudinal direction is too small, air circulation within the pre-set space 106 may be impeded, which may affect the heat dissipation of the intercooler 194. Furthermore, this arrangement ensures the performance of the intercooler 194 while also improving the rationality and compactness of the powertrain 19 layout.

[0055] As an implementation, the powertrain 19 further includes an exhaust duct 195, with its ends connected to the supercharger 191 and the muffler 193, respectively. The ratio of the exhaust duct 195's length D4 to the powertrain's distribution distance D1 ranges from 0.3 to 0.5. As an implementation, the ratio of the exhaust duct 195's length D4 to the powertrain's distribution distance D1 ranges from 0.35 to 0.45. As an implementation, the ratio of the exhaust duct 195's length D4 to the powertrain's distribution distance D1 is equal to 0.4. If the ratio of the exhaust duct 195's length D4 to the powertrain's distribution distance D1 is too large, the exhaust duct 195's length D4 becomes excessively long, requiring the exhaust duct 195 to occupy an excessively large layout space, reducing the compactness of the all-terrain vehicle 100. If the ratio of the length D4 of the exhaust pipe 195 along the longitudinal direction to the distribution distance D1 of the powertrain 19 is too small, the length D4 of the exhaust pipe 195 along the longitudinal direction is too short, and the distance between the muffler 193 and the engine 151 is short. Since a large number of wiring harnesses (not shown) are arranged around the engine 151, the short distance between the muffler 193 and the engine 151 increases the difficulty of routing the wiring harnesses around the engine 151. This arrangement facilitates the routing of the wiring harnesses around the engine 151 while also improving the compactness of the all-terrain vehicle 100.

[0056] As shown in FIG8 , as one implementation, the accessory gear train 18 includes a first motor 181 and a second motor 182. The first motor 181 is connected to the crankshaft of the engine 151 and remains in a power generation state while the engine 151 is operating. The second motor 182 is in transmission connection with the first motor 181 and switches to a power generation state when the power consumption of the ATV 100 is greater than or equal to a preset threshold.

[0057] As an implementation, when the ATV 100's power consumption is low, the first motor 181 remains in a generating state and the second motor 182 remains in a low speed state, thereby meeting the ATV 100's power needs. When the ATV 100's power consumption is high, both the first motor 181 and the second motor 182 remain in a generating state to meet the ATV 100's power needs. This arrangement not only meets the ATV 100's power needs but also prevents damage to the second motor 182 caused by prolonged use, thereby extending its service life. The first motor 181 is a permanent magnet motor, and the second motor 182 is an excitation motor.

[0058] As shown in FIG10 , as one embodiment, the ATV 100 further includes a fuel system 24 disposed within the vehicle frame 11. Fuel system 24 is at least partially connected to the power system 15 and provides fuel to the power system 15. Fuel system 24 includes a fuel tank 241 that extends substantially across the width of the ATV 100. Fuel tank 241 includes a saddle portion 2411, and drive system 16 includes a drive shaft 166 that passes through saddle portion 2411. Specifically, at least a portion of drive shaft 166 overlaps with fuel tank 241 across the width of the ATV 100 and also overlaps with fuel tank 241 across the height of the ATV 100. This placement of fuel tank 241 not only avoids the presence of drive system 16, which is also located at the bottom of the ATV 100, but also balances the weight of the ATV 100 across the width of the ATV 100. In this embodiment, the saddle-shaped recessed design at the bottom of the fuel tank 241 effectively avoids the drive shaft 166, thereby fully utilizing the space under the ATV 100 to accommodate the fuel tank 241. This makes the bottom structure of the seat of the ATV 100 more compact and improves overall space utilization. The fuel tank 241 includes a refueling pipe 2416 for refueling. One end of the refueling pipe 2416 extends into the fuel tank 241, while the other end of the refueling pipe 2416 protrudes from the fuel tank 241. The refueling pipe 2416 increases the convenience of refueling.

[0059] Furthermore, at least a portion of the refueling pipe 2416 is positioned in front of the fuel tank 241 along the length of the ATV 100. The refueling pipe 2416 serves a guiding function, controlling the direction of insertion of the refueling gun and the direction of fuel injection during refueling, thereby protecting components such as the first fuel pump 2414 in the fuel tank 241 and preventing damage to the first fuel pump 2414 due to collisions.

[0060] As shown in Figure 11 , as one implementation, fuel filler pipe 2416 includes a fuel filler pipe body 2416a and a screen 2416b connected to one end of fuel filler pipe body 2416a. Screen 2416b prevents external devices from reaching into fuel tank 241 and stealing fuel. Furthermore, screen 2416b, with its filter holes, filters impurities from the fuel. Screen 2416b directly traps foreign particles within fuel filler pipe 2416, preventing them from entering fuel tank 241 and clogging the fuel line. The ratio of screen 2416b's length D7 along the axial direction of fuel filler pipe 2416 to its length D8 along the axial direction of fuel filler pipe 2416 is in the range of 0.1 to 0.5. As an implementation, the ratio of the length D D7 of the partition 2416b along the axis of the fuel filler pipe 2416 to the length D8 of the fuel filler pipe 2416 along the axis of the fuel filler pipe 2416 ranges from 0.15 to 0.45. As an implementation, the ratio of the length D7 of the partition 2416b along the axis of the fuel filler pipe 2416 to the length D8 of the fuel filler pipe 2416 along the axis of the fuel filler pipe 2416 ranges from 0.2 to 0.4. The filter holes have a diameter ranging from 2.5 mm to 5 mm. Setting the filter hole diameter within this range ensures that most impurities are blocked from entering the fuel tank 241. As an implementation, the filter hole diameter ranges from 3 mm to 4.5 mm. As an implementation, the filter hole diameter ranges from 3.5 mm to 4 mm. Furthermore, screen 2416b and fuel filler pipe body 2416a can be integrally formed. This integral molding arrangement strengthens screen 2416b, preventing it from falling due to the impact of fuel, and reduces the number of manufacturing and assembly steps, thereby lowering manufacturing costs. Screen 2416b and fuel filler pipe body 2416a can also be manufactured separately and then assembled together. If the filter holes become clogged with impurities, screen 2416b can be directly removed for cleaning or replacement, thereby reducing maintenance costs. Furthermore, the separate manufacturing of screen 2416b and fuel filler pipe body 2416a allows for the selection of different screens 2416b to accommodate different vehicle models, increasing the versatility of screen 2416b and reducing manufacturing costs.

[0061] As shown in Figure 12, the vehicle frame 11 includes a cockpit 101 formed around a user seat. A fuel tank 241 is located in front of the cockpit 101. Specifically, the fuel tank 241 can be located in front of the passenger seat of the ATV 100. A longitudinal plane 109 perpendicular to the width of the ATV 100 is defined. The projection of the cockpit 101 onto the longitudinal plane 109 along the width of the ATV 100 is referred to as the cockpit projection 102. The projection of the fuel tank 241 onto the longitudinal plane 109 along the width of the ATV 100 is referred to as the fuel tank projection 103. The fuel tank projection 103 is located in front of the cockpit projection 102. This arrangement of the fuel tank 241 changes the conventional positioning structure of the fuel tank 241. Placing the fuel tank 241 in front of the cockpit 101 expands the storage space of the ATV 100.

[0062] The cockpit 101 includes a first upper beam 1011, a second upper beam 1012, a first lower beam 1013, a second lower beam 1014, and an oblique beam 1015. These beams extend substantially along the width of the all-terrain vehicle 100. The first upper beam 1011 is connected to the first lower beam 1013 via oblique beams 1015 located on either side thereof. The second upper beam 1012 is connected to the second lower beam 1014 via oblique beams 1015 located on either side thereof. The first upper beam 1011, the second upper beam 1012, the first lower beam 1013, the second lower beam 1014, and the oblique beam 1015 define a storage space within which the fuel tank 241 is located. Fuel tank 241 is surrounded by first upper beam 1011, second upper beam 1012, first lower beam 1013, second lower beam 1014, and diagonal beam 1015. When ATV 100 is struck by an external force, first upper beam 1011, second upper beam 1012, first lower beam 1013, second lower beam 1014, and diagonal beam 1015 protect fuel tank 241 from damage, thereby increasing the safety and service life of fuel tank 241.

[0063] The power system 15 of the all-terrain vehicle 100 of this embodiment is arranged at the rear of the frame 11. The power system 15 is prone to heat due to long-term operation. The fuel tank 241 is arranged away from the engine 151 to prevent the fuel tank 241 and the fuel in the fuel tank 241 from being heated, thereby improving the safety of the fuel tank 241.

[0064] As an implementation, at least four inclined beams 1015 are provided. The dimension of the fuel tank 241 in the width direction of the ATV 100 is defined as the fuel tank width Q1, and the dimension of the cabin 101 in the width direction of the ATV 100 is defined as the cabin 101 width Q2. The ratio between the fuel tank width Q1 and the cabin 101 width Q2 ranges from 0.5 to 0.8. By adjusting the ratio between the width of the fuel tank 241 and the cabin 101 width, the overall weight of the fuel tank 241 can be further limited, ensuring a lightweight design for the ATV 100. As an implementation, the ratio between the fuel tank width Q1 and the cabin 101 width Q2 ranges from 0.6 to 0.75. As an implementation, the ratio between the fuel tank width Q1 and the cabin 101 width Q2 ranges from 0.5 to 0.7. The above-mentioned arrangement of the fuel tank 241 can ensure that the fuel tank 241 is offset in the cockpit 101. The offset of the fuel tank 241 toward the co-pilot position can reserve installation space for components such as the steering system of the all-terrain vehicle 100.

[0065] As shown in Figures 13 and 14, the ATV 100 includes a cooling system 26, which is at least partially connected to the power system 15. The cooling system 26 assists in heat exchange with the engine 151, maintaining the engine 151 at a suitable operating temperature. The cooling system 26 includes a cooling module 261, which is connected to the rear frame 111. In the height direction of the ATV 100, the cooling module 261 is located above the engine 151 in the power system 15. The cooling module 261 is primarily used to dissipate heat from the engine 151. Positioning the cooling module 261 near the engine 151 improves the heat dissipation efficiency of the engine 151. The ATV 100 includes a body panel 12 and a seat assembly 22. The body panel 12 includes a cargo box 121 connected to the rear frame 111. In the length direction of the ATV 100, the cooling module 261 is located behind the seat assembly 22 and in front of the cargo box 121. The placement of cooling module 261 between seat assembly 22 and cargo box 121 allows for full utilization of the space within frame 11, thereby improving the space efficiency of ATV 100. The placement of cooling module 261 near power system 15 reduces the distance between the cooling module 261 and the engine 151, thereby increasing heat dissipation efficiency.

[0066] Cooling module 261 includes an integrated intercooler 194, a radiator 2611, and a fan assembly 2612. Fan assembly 2612 is located on one side of radiator 2611, and intercooler 194 is located on the other side of radiator 2611. The intercooler 194, radiator 2611, and fan assembly 2612 are integrated into a single unit. Intercooler 194 is used to reduce the intake air temperature of engine 151, improving the operating stability and efficiency of engine 151. Radiator 2611 is connected to engine 151. When engine 151 is operating, high-temperature coolant generated by engine 151 is discharged into radiator 2611. The high-temperature coolant circulates within radiator 2611 and is cooled. After cooling within radiator 2611, the coolant re-enters engine 151 to cool the engine 151 and dissipate heat. The fan assembly 2612 drives air flow around the intercooler 194 and radiator 2611, increasing the air flow rate. This air flow removes heat generated in the intercooler 194 and radiator 2611, thereby dissipating heat from the cooling module 261. In this embodiment of the present application, by integrating the intercooler 194, radiator 2611, and fan assembly 2612 into the cooling module 261, the space occupied by the intercooler 194, radiator 2611, and fan assembly 2612 is reduced, thereby improving the space utilization of the ATV 100 and optimizing the layout of the ATV 100. The integrated intercooler 194 and radiator 2611 share a single fan assembly 2612 for heat dissipation, improving the utilization of the fan assembly 2612 and reducing the energy consumption of the ATV 100.

[0067] As shown in Figures 14 and 15 , the extended plane of cooling module 261 is defined as cooling module plane 301. Fan assembly 2612 includes a plurality of fans 2612a, the axes of which are perpendicular to cooling module plane 261a. The ratio of dimension P1 of cooling module 261 along the axis of fan 2612a to dimension P2 of cooling module 261 along the width of ATV 100 is in the range of 0.18 to 0.33. Dimension P1 of cooling module 261 along the axis of fan 2612a represents the thickness of cooling module 261, while dimension P2 of cooling module 261 along the width of ATV 100 represents the length of cooling module 261. When the thickness-to-length ratio of cooling module 261 is within this range, cooling module 261 has larger fan assemblies 2612. These larger fan assemblies can provide a greater cooling air volume, thereby improving the cooling efficiency of cooling module 261. At the same time, the cooling module 261 has a relatively small thickness, which increases the degree of integration of the cooling module 261 and can reduce the space occupied by the cooling module 261 in the length direction of the all-terrain vehicle 100.

[0068] As an implementation, the ratio of the dimension P1 of the cooling module 261 along the axis of the fan 2612a to the dimension P2 of the cooling module 261 along the width of the ATV 100 is in a range of 0.2 to 0.3. Furthermore, the ratio of the dimension P1 of the cooling module 261 along the axis of the fan assembly 2612 to the dimension P2 of the cooling module 261 along the width of the ATV 100 is in a range of 0.23 to 0.28.

[0069] A transverse plane 302 perpendicular to the length of the all-terrain vehicle 100 is defined, and the angle ξ between the cooling module plane 261a and the transverse plane 302 ranges from 5° to 30°. The cooling module 261 is tilted at a certain angle, which makes it easier for the fan device 2612 to drive air circulation in the cooling module 261 area. The better the air circulation effect, the stronger the heat dissipation effect. Furthermore, the angle ξ between the cooling module plane 261a and the transverse plane 302 ranges from 10° to 25°. Furthermore, the angle ξ between the cooling module plane 261a and the transverse plane 302 ranges from 15° to 20°. In addition, the fans 2612a are distributed along the cooling module plane 261a.

[0070] As shown in FIG16 , a reference plane 107 perpendicular to the height direction of the all-terrain vehicle 100 is defined, and the projection of the cooling module 261 on the reference plane 107 along the height direction of the all-terrain vehicle 100 is referred to as the cooling module 261 projection. The projection of the axis of the front wheel 141 on the reference plane 107 along the height direction of the all-terrain vehicle 100 is referred to as the front wheel 141 axis projection. The projection of the axis of the rear wheel 142 on the reference plane 107 along the height direction of the all-terrain vehicle 100 is referred to as the rear wheel 142 axis projection. The distance from the front end of the cooling module 261 projection to the projection of the axis of the front wheel 141 is referred to as the cooling module 261 front end distance P3. The distance from the front wheel 141 axis projection to the projection of the axis of the rear wheel 142 is referred to as the drive shaft distance P4. The ratio of the cooling module 261 front end distance P3 to the drive shaft distance P4 is in a range of 0.6 to 0.9. The cooling module 261 is positioned closer to the rear wheel 142, preventing it from excessively encroaching on the front space of the ATV 100. This also improves weight distribution and prevents the cooling module 261 from adding weight to the front of the ATV 100. Furthermore, the ratio of the front end distance P3 of the cooling module 261 to the drive shaft distance P4 ranges from 0.65 to 0.85. Furthermore, the ratio of the front end distance P3 of the cooling module 261 to the drive shaft distance P4 ranges from 0.7 to 0.8. The projection of the rear wheel 142 onto the reference plane 107 along the height direction of the ATV 100 is the projection of the rear wheel 142. Along the width direction of the ATV 100, the ratio of the projection dimension P5 of the cooling module 261 to the projection dimension P6 of the rear wheel 142 ranges from 0.39 to 0.72. Controlling the width of the cooling module 261 across the ATV 100 ensures that the cooling module 261 is sufficiently large, increasing cooling efficiency, while also preventing the cooling module 261 from being too large and encroaching on the layout space of other components. Furthermore, the ratio of the projected dimension P5 of the cooling module 261 to the projected dimension P6 of the rear wheel 142 ranges from 0.44 to 0.66. Furthermore, the ratio of the projected dimension P5 of the cooling module 261 to the projected dimension P6 of the rear wheel 142 ranges from 0.49 to 0.61.

[0071] As shown in Figures 17 and 18 , as one embodiment, the cooling system 26 includes a flow guide mechanism 262 for guiding air to the cooling module 261. The flow guide mechanism 262 extends substantially along the width of the all-terrain vehicle 100. The flow guide mechanism 262 includes a flow guide housing 2621 and an air inlet member 2622 disposed at at least one end of the flow guide housing 2621. The flow guide housing 2621 encloses an air chamber 2621a. The air inlet member 2622 communicates with the air chamber 2621a. At least a portion of the cooling module 261 is disposed in the air chamber 2621a.

[0072] The air guide mechanism 262 is at least partially disposed on the vehicle frame 11 and behind the seat. The air guide mechanism 262 guides air and dissipates heat for the cooling module 261. At least a portion of the cooling module 261 is disposed within the air chamber 2621a enclosed by the air guide housing 2621. During travel of the ATV 100, the air guide mechanism 262 directs wind from the direction of the ATV 100 into the air chamber 2621a enclosed by the air guide housing 2621 via the air inlet member 2622. The cooling module 261 disposed within the air chamber 2621a enclosed by the air guide housing 2621 then removes heat generated by the cooling module 261 through the air flow, thereby enhancing the heat dissipation efficiency of the cooling module 261 of the ATV 100.

[0073] The air inlet member 2622 includes an air inlet 2622a. The straight line extending from the air inlet 2622a is defined as the air inlet extension line 305. The angle o between the air inlet extension line 305 and the longitudinal plane 109 ranges from 30° to 70°. The orientation of the air inlet 2622a significantly affects the amount of air entering. When the air inlet 2622a is oriented within the aforementioned range, the air inlet 2622a can better utilize the wind-guiding function of the door assembly 17. The orientation of the air inlet 2622a also aligns with the travel direction of the all-terrain vehicle 100, further increasing the amount of air entering. Furthermore, the angle o between the air inlet extension line 305 and the longitudinal plane 109 ranges from 40° to 60°. Furthermore, the angle o between the air inlet extension line 305 and the longitudinal plane 109 ranges from 45° to 65°.

[0074] As an implementation, the angle π between the air inlet extension line 305 and the reference plane 107 ranges from 0° to 30°. Furthermore, the angle π between the air inlet extension line 305 and the reference plane 107 ranges from 5° to 25°. Furthermore, the angle π between the air inlet extension line 305 and the reference plane 107 ranges from 10° to 20°. In the height direction of the ATV 100, the air guide housing 2621 at least partially overlaps with the power system 15. This overlapping arrangement improves the space utilization of the ATV 100. The ratio of the dimension P7 of the air guide mechanism 262 along the width direction of the ATV 100 to the dimension P8 of the air guide housing 2621 along the width direction of the ATV 100 ranges from 1.1 to 2.2. The air inlet members 2622 of the air guide mechanism 262 are disposed on both sides of the air guide housing 2621. When viewed from the front of the ATV 100, the door assembly 17 is located between the air inlet members 2622 on both sides. A narrower width of the air guide housing 2621 results in a smaller size. The airflow introduced by the air inlet member 2622 can create a faster airflow within the air guide housing 2621, thereby improving heat dissipation efficiency. Furthermore, the ratio of the dimension P7 of the air guide mechanism 262 along the width of the ATV 100 to the dimension P8 of the air guide housing 2621 along the width of the ATV 100 ranges from 1.3 to 2.1. Furthermore, the ratio of the dimension P7 of the air guide mechanism 262 along the width of the ATV 100 to the dimension P8 of the air guide housing 2621 along the width of the ATV 100 ranges from 1.5 to 1.9. The projection of the air inlet 2622a along the longitudinal direction of the ATV 100 onto the transverse plane 302 is the projection of the air inlet 2622a, and the area of ​​the projection of the air inlet 2622a ranges from 700 cm² to 1600 cm². The projection of the air inlet 2622a refers to the projection of the air inlet 2622a of all the air inlet members 2622 of the air flow guide mechanism 262 along the length of the ATV 100 on the transverse plane 302. The size of the air inlet 2622a is set within the above range to meet the required heat dissipation air volume while avoiding the problem of the ATV 100 being too wide due to the air inlet 2622a being too large.

[0075] As shown in Figure 18, the bottom of the air guide housing 2621 is tilted. The space at the bottom of the air guide housing 2621 serves as maintenance space for other components of the engine 151 located in this area, increasing the maintenance space of the ATV 100 and facilitating repairs. The bottom extension plane of the air guide housing 2621 is defined as the bottom extension plane 306. The angle ρ between the bottom extension plane 306 and the reference plane 107 ranges from 10° to 30°. The tilted bottom of the air guide housing 2621 helps avoid the power system 15. Furthermore, the bottom of the air guide housing 2621 increases airflow directed to the power system 15 when the ATV 100 is in motion, improving the passive heat dissipation efficiency of the power system 15. Furthermore, the angle ρ between the bottom extension plane 306 and the reference plane 107 ranges from 15° to 25°. Furthermore, the angle ρ between the bottom extension plane 306 and the reference plane 107 ranges from 17° to 22°. The air guide housing 2621 is also equipped with a removable cover. The removable cover facilitates maintenance of components related to the power system 15 located beneath the deflector housing 2621. The deflector housing 2621 and the air inlet member 2622 are integrally formed, which increases strength. The deflector mechanism 262 can be made of plastic. Plastic is lightweight, and using it for the deflector mechanism 262 can reduce vehicle weight and improve performance.

[0076] Air inlet 2622a further includes an upper air inlet 2622b, which is located above air inlet 2622a. Transmission system 16 includes transmission 165 and transmission air inlet pipe 167. One end of transmission air inlet pipe 167 is connected to upper air inlet 2622b, and the other end of transmission air inlet pipe 167 is connected to transmission 165. Transmission air inlet pipe 167 is connected between upper air inlet 2622b and transmission 165 to provide cooling air for transmission 165. Air filter 192 includes air filter air inlet pipe 1921. One end of air filter air inlet pipe 1921 is connected to upper air inlet 2622b. Air filter 192 communicates with upper air inlet 2622b via air filter air inlet pipe 1921. Air filter 192 is used to filter the intake air of engine 151, reducing impurities in the intake air and ensuring the normal operation of engine 151. The air filter intake duct 1921 is connected between the upper air inlet 2622b and the air filter 192, providing clean air to the air filter 192 and the engine 151. The transmission intake duct 167 and the air filter intake duct 1921 are connected to the same upper air inlet 2622b. This reduces the length of the intake lines and allows for a more compact arrangement of the transmission intake duct 167 and the air filter intake duct 1921, saving space in the rear of the ATV 100. Furthermore, the higher position of the upper air inlet 2622b within the ATV 100 positions the air filter and transmission 165 at a higher position. This ensures cleaner air intake to the air filter 192 and transmission 165, improving the operational stability of the transmission 165 and the engine 151.

[0077] As shown in FIG18 , transmission 165 also includes a transmission exhaust port 1651. Transmission exhaust port 1651 is positioned rearward along the length of ATV 100, allowing exhaust from transmission 165 to flow into exhaust pipe 195 of engine 151. This arrangement increases air flow behind engine 151 and reduces the temperature of exhaust pipe 195, improving heat dissipation efficiency at the rear of ATV 100.

[0078] As shown in Figures 18 and 19, the door assembly 17 is located in front of the air inlet member 2622 along the length of the ATV 100. This ensures that the air inlet member 2622 does not interfere with the opening and closing of the door assembly 17. A transverse plane 302 perpendicular to the length of the ATV 100 is defined. The projection of the air inlet member 2622 along the length of the ATV 100 on transverse plane 302 is defined as the air inlet member projection 104. The projection of the door assembly 17 along the length of the ATV 100 on transverse plane 302 is defined as the door projection 105. The door projection 105 is located between the two air inlet member projections 104. This arrangement prevents the air inlet member 2622 from being blocked by the door assembly 17. It also allows the door assembly 17 to guide air from the air inlet member 2622, increasing the air volume entering the air inlet member 2622 and improving the air intake efficiency of the air inlet member 2622.

[0079] The air guide mechanism 262 also includes an auxiliary air inlet member 2623 disposed at the front end of the air guide housing 2621. The auxiliary air inlet member 2623 is positioned in the middle of the air guide mechanism 262, near the top. The auxiliary air inlet member 2623 assists in air intake and, together with the air inlet member 2622, simultaneously introduces and guides air into the ATV 100. This auxiliary air inlet member 2623 enhances the air guiding effectiveness of the air guide mechanism 262 and improves the heat dissipation capability of the ATV 100. Along the length of the ATV 100, the auxiliary air inlet member 2623 partially overlaps with the seat assembly 22. The seat assembly 22 has minimal impact on the air intake of the auxiliary air inlet member 2623, while the remaining portion of the auxiliary air inlet member 2623 provides maximum air guidance and intake. Furthermore, this partial overlap saves space within the ATV 100, improving space utilization.

[0080] The above arrangement enables the auxiliary air inlet member 2623 to be basically arranged above the seat, reducing the influence of the seat on the auxiliary air inlet member 2623 in assisting air intake and guiding air, and can enhance the auxiliary air inlet member 2623 in assisting air intake and guiding air.

[0081] Optionally, along the height direction of the ATV 100, the top of the seat assembly 22 is arranged higher than the bottom of the auxiliary air inlet member 2623, and the top of the seat assembly 22 is arranged lower than the top of the auxiliary air inlet member 2623. The auxiliary air inlet member 2623 and the seat assembly 22 partially overlap in the height direction of the ATV 100, which can further improve the structural compactness of the air inlet member 2622 and the seat assembly 22.

[0082] In the height direction of the ATV 100, the distance P9 between the top and bottom of the air inlet member 2622 ranges from 650 mm to 1250 mm. When the dimensions of the air inlet member 2622 in the height direction of the ATV 100 are within this range, the air inlet member 2622 can utilize the door assembly 17 to maximize the air intake volume of the air inlet member 2622 while also ensuring that the excessive size of the air inlet member 2622 does not affect the layout of components such as the cargo box. Furthermore, the distance P9 between the top and bottom of the air inlet member 2622 ranges from 750 mm to 1150 mm. Furthermore, the distance P9 between the top and bottom of the air inlet member 2622 ranges from 850 mm to 1050 mm.

[0083] The projection of the air guide mechanism 262 on the transverse plane 302 along the length of the all-terrain vehicle 100 is defined as the air guide mechanism projection, and the projection of the auxiliary air inlet member 2623 on the transverse plane 302 along the length of the all-terrain vehicle 100 is defined as the auxiliary air inlet member projection. Auxiliary air inlet member 2623 occupies a certain proportion on the air guide mechanism 262 to better assist the air guide mechanism 262 in guiding air. When the proportion of the auxiliary air inlet member 2623 on the air guide mechanism 262 is less than 0.21, the proportion of the auxiliary air inlet member 2623 on the air guide mechanism 262 is small, the auxiliary air inlet member 2623's effect in assisting air intake and guiding is small, and the effect of the auxiliary air inlet member 262 on assisting air intake for the air guide mechanism 262 is small. When the proportion of the auxiliary air inlet member 2623 on the air guide mechanism 262 is greater than 0.39, the proportion of the auxiliary air inlet member 2623 on the air guide mechanism 262 is large, affecting the spatial structure of the air guide mechanism 262. In summary, the ratio of the projected dimension of the auxiliary air inlet member along the width direction of the ATV 100 to the projected dimension of the air guide mechanism along the width direction of the ATV 100 ranges from 0.2 to 0.4. As an implementation, the ratio of the projected dimension of the auxiliary air inlet member along the width direction of the ATV 100 to the projected dimension of the air guide mechanism along the width direction of the ATV 100 ranges from 0.24 to 0.36. As an implementation, the ratio of the projected dimension of the auxiliary air inlet member along the width direction of the ATV 100 to the projected dimension of the air guide mechanism along the width direction of the ATV 100 ranges from 0.27 to 0.33.

[0084] As shown in Figures 14 and 20, as one embodiment, the cooling module 261 also includes a fixed frame 2613, which is connected to the rear frame 111. The fixed frame 2613 includes a first mounting surface 2613a and a second mounting surface 2613b. The fan assembly 2612 is connected to the first mounting surface 2613a, and the radiator 2611 is connected to the first mounting surface 2613a. The radiator 2611 is located between the fan assembly 2612 and the fixed frame 2613. The intercooler 194 is connected to the second mounting surface 2613b. The fan assembly 2612, radiator 2611, and intercooler 194 are integrated into a single unit by the fixed frame 2613, achieving an integrated arrangement of the fan assembly 2612, radiator 2611, and intercooler 194. This reduces installation space on the ATV 100 and improves space utilization. Furthermore, the integrated arrangement of the cooling module 261 reduces the number of connection points to the frame 11, thus reducing the number of mounting brackets on the frame 11 and improving assembly efficiency. When installing the ATV 100, the intercooler 194, radiator 2611, and fan assembly 2612 can be first assembled to the fixed frame 2613. After the cooling module 261 is assembled, the entire assembly can be mounted on the vehicle frame 11, simplifying both installation and assembly processes. The extended plane of the fixed frame 2613 is defined as the fixed frame plane, and a fixed frame vertical line perpendicular to the fixed frame plane is defined as the fixed frame plane. The ratio of the dimension P1 of the cooling module 261 along the fixed frame vertical line to the dimension P10 of the fixed frame 2613 along the width of the ATV 100 is in the range of 0.16 to 0.32. This arrangement of the cooling module 261 can reduce its thickness. As an implementation, the ratio of the dimension P1 of the cooling module 261 along the fixed frame vertical line to the dimension P10 of the fixed frame 2613 along the width of the ATV 100 is in the range of 0.19 to 0.29. As an implementation, the ratio of the dimension P1 of the cooling module 261 along the perpendicular direction of the fixed frame to the dimension P10 of the fixed frame 2613 along the width of the ATV 100 ranges from 0.21 to 0.27. The radiator 2611 overlaps with the fixed frame 2613 in the width direction of the ATV 100. The radiator 2611 is disposed within the fixed frame 2613, enabling the fixed frame 2613 to protect the radiator 2611. The ratio of the dimension of the radiator 2611 along the perpendicular direction of the fixed frame to the dimension of the fixed frame 2613 along the perpendicular direction of the fixed frame ranges from 0.6 to 1.2. The thickness of the radiator 2611 is substantially the same as that of the fixed frame 2613. The radiator 2611 can be disposed within the fixed frame 2613, thereby better protecting the radiator 2611. As an implementation manner, the ratio of the size of the heat sink 2611 along the direction perpendicular to the fixing frame to the size of the fixing frame 2613 along the direction perpendicular to the fixing frame ranges from 0.7 to 1.1.As an implementation manner, the ratio of the size of the heat sink 2611 along the direction perpendicular to the fixing frame to the size of the fixing frame 2613 along the direction perpendicular to the fixing frame ranges from 0.8 to 1.0.

[0085] As shown in Figure 20, the first mounting surface 2613a is provided with at least three fan mounts 2613c for securing the fan assembly 2612, and the first mounting surface 2613a is provided with at least three radiator mounts 2613d for securing the radiator 2611. The installation of the fan assembly 2612 and the radiator 2611 on the fixed frame 2613 requires ensuring a strong connection. By providing the fan mounts 2613c and radiator mounts 2613d, respectively, on the fixed frame 2613, the connection strength of the fan assembly 2612 and the radiator 2611 to the fixed frame 2613 is enhanced. In a direction perpendicular to the fixed frame, the distance between the fan mount 2613c and the first mounting surface 2613a is greater than or equal to the distance between the radiator mount 2613d and the mounting surface. This arrangement allows the fan assembly 2612 to be mounted outside the radiator 2611, facilitating heat dissipation from the radiator 2611. Specifically, at least two of the radiator mounting brackets 2613d are plug holes and at least one is a fixing hole. The radiator 2611 is connected to the fixed frame 2613 via the plug holes and the fixing holes. The plug holes facilitate the installation of the radiator 2611 to the fixed frame 2613, reducing the difficulty of assembling the radiator 2611. The plug holes and the fixing holes work together to improve the stability of the connection between the radiator 2611 and the fixed frame 2613. The fixed frame 2613 is provided with at least three connecting brackets for connecting the fixed frame 2613 to the vehicle frame 11. The connecting brackets on the fixed frame 2613 serve as the connecting structure between the cooling module 261 and the vehicle frame 11, ensuring the reliability of the connection between the fixed frame 2613 and the vehicle frame 11, thereby improving the reliability of the connection between the cooling module 261 and the vehicle frame 11. The fixed frame 2613 can be made of plastic, which is lightweight and can reduce vehicle weight and improve vehicle performance. Plastic is a good insulator and chemically stable, with good corrosion resistance to chemicals such as acids and alkalis. Using plastic as the fixing frame 2613 can adapt to various vehicle conditions and extend the service life of the fixing frame 2613. The fixing frame plane is arranged parallel to the cooling module plane 261a.

[0086] As shown in FIG21 , as one embodiment, the cooling system 26 further includes a cooling water bottle 264. A portion of the cooling water bottle 264 is connected to the engine 151, and another portion of the cooling water bottle 264 is connected to the radiator 2611. Furthermore, the cooling water bottle 264 is positioned behind the upper air inlet 2622b in the longitudinal direction of the all-terrain vehicle 100. The placement of the cooling water bottle 264 behind the upper air inlet 2622b allows the cooling water bottle 264 to utilize the air in the upper air inlet 2622b for heat dissipation, thereby improving the overall heat dissipation efficiency of the cooling system 26.

[0087] The cooling kettle 264 includes a kettle body 2641 and a pressure cover 2642 connected to the kettle body 2641. Specifically, the pressure cover 2642 includes a pressure valve that can be connected in both directions. The pressure cover 2642 includes a closed state that closes the kettle body 2641 and a connected state that connects the kettle body 2641 to the air. When the pressure in the kettle body 2641 is greater than the first critical pressure and less than the second critical pressure, the pressure valve in the pressure cover 2642 is closed, so that the pressure cover 2642 is in a closed state. When the pressure in the kettle body 2641 is less than the first critical pressure or greater than the second critical pressure, the pressure valve in the pressure cover 2642 is opened, so that the pressure cover 2642 is in a connected state, and the first critical pressure is less than the second critical pressure. The cooling kettle 264 provided with the pressure cover 2642 is basically a fully enclosed environment. The closed cooling kettle 264 can reduce the loss of coolant and improve the operating stability of the cooling system 26. The cooling water tank 264 balances the fluid level and pressure in the radiator 2611 and engine 151, and the pressure cap 2642 regulates the pressure in the cooling water tank 264. During operation of the ATV 100, the coolant temperature in the engine 151 gradually increases, and with it, the pressure within the engine 151. High-temperature, high-pressure coolant in the engine 151 can affect its performance and service life. Furthermore, vapor bubbles can form in the high-temperature, high-pressure coolant, which can cause cavitation within the engine 151 and affect its operational stability. After the cooling water tank 264 is installed in the ATV 100, it is connected to the engine 151, allowing coolant to flow between the engine 151 and the cooling water tank 264. When the pressure within the cooling water tank 264 falls below a first critical pressure, the pressure cap 2642 of the cooling water tank 264 opens, allowing ambient air to enter the cooling water tank 264 to balance the pressure within the cooling water tank 264. When the pressure in the cooling kettle 264 is too high than the second critical pressure, the pressure cap 2642 of the cooling kettle 264 opens, and the excess steam in the cooling kettle 264 can be discharged into the environment. By providing the cooling kettle 264 with a pressure cap 2642, it is possible to prevent the cooling system 26 from having too low or too high pressure, while ensuring that the pressure of the engine 151 is within a suitable range, thereby improving the reliability of the engine 151. Specifically, the first critical pressure ranges from -10kPa to 0kPa, and the second critical pressure ranges from 90kPa to 170kPa. Further, the first critical pressure ranges from -7kPa to -3kPa, and the second critical pressure ranges from 100kPa to 160kPa. Further, the first critical pressure ranges from -6kPa to -4kPa, and the second critical pressure ranges from 115kPa to 145kPa.

[0088] As shown in FIG37 , the cooling water bottle 264 also includes a first degassing port 2643 for connecting to the engine 151, a second degassing port 2644 for connecting to the radiator 2611, and a water inlet 2645 for replenishing coolant into the radiator 2611. The first degassing port 2643 is connected to the engine 151 via a pipe. The connection between the first degassing port 2643 and the engine 151 ensures pressure balance within the engine 151. The second degassing port 2644 is connected to the radiator 2611 via a pipe. The connection between the second degassing port 2644 and the radiator 2611 ensures pressure balance within the radiator 2611. The water inlet 2645 is connected to the radiator 2611 via a pipe. The water inlet 2645 is used to replenish coolant into the radiator 2611 and ensures liquid level balance within the cooling system 26. The diameter of first degassing port 2643 is smaller than that of water inlet 2645, and the diameter of second degassing port 2644 is smaller than that of water inlet 2645. Both first and second degassing ports 2643 and 2644 only need to allow for gas circulation, and their smaller diameters also reduce the space they occupy. Radiator 2611 includes a degassing port and a water inlet 2645. The degassing port is positioned above the water inlet 2645 in the height direction of ATV 100. Second degassing port 2644 in cooling water tank 264 is connected to radiator 2611. High-temperature, high-pressure coolant and steam in radiator 2611 are discharged into cooling water tank 264 through second degassing port 2644, reducing the pressure in radiator 2611 and preventing excessive pressure. The cooling water bottle 264 has a simple overall structure and a simple cooling process. The cooling water bottle 264 satisfies the degassing functions at both the engine 151 end and the radiator 2611 end.

[0089] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. An all-terrain vehicle comprising: A vehicle frame, the vehicle frame comprising a rear frame disposed at the rear of the all-terrain vehicle; a body covering, the body covering being at least partially disposed on the vehicle frame; a power system, the power system being supported by the vehicle frame; a transmission system at least partially connected to the power system; a travel assembly, the travel assembly being at least partially connected to the transmission system; a cooling system, the cooling system being at least partially connected to the power system; a vehicle door assembly, the vehicle door assembly being connected to the vehicle frame; Wherein, the cooling system is supported by the rear frame, and the cooling system includes a cooling module at least partially connected to the power system and a guide mechanism for guiding air for the cooling module, the guide mechanism includes a guide shell and air inlet pieces arranged on both sides of the guide shell; the guide shell encloses an air chamber, and the air inlet piece is connected to the air chamber; the cooling module is at least partially arranged in the air chamber; a transverse plane perpendicular to the length direction of the all-terrain vehicle is defined, the projection of the air inlet piece on the transverse plane along the length direction of the all-terrain vehicle is the air inlet piece projection, the projection of the door assembly on the transverse plane along the length direction of the all-terrain vehicle is the door projection, and the door projection is located between the two air inlet piece projections.

2. The all-terrain vehicle of claim 1, wherein: In the length direction of the all-terrain vehicle, the door assembly is located in front of the air inlet member.

3. The all-terrain vehicle of claim 1, wherein: The air inlet member includes an air inlet, an extension line of the air inlet is defined as an air inlet extension line, a longitudinal plane perpendicular to the width direction of the all-terrain vehicle is defined, and an angle between the air inlet extension line and the longitudinal plane ranges from 30° to 70°.

4. The all-terrain vehicle of claim 1, wherein: The cooling module comprises an intercooler, a radiator and a fan device, wherein the fan device is arranged on one side of the radiator and the intercooler is arranged on the other side of the radiator; The extension plane is a cooling module plane, the axis of the fan is perpendicular to the cooling module plane, and the ratio of the dimension of the cooling module along the axis of the fan to the dimension of the cooling module along the width direction of the all-terrain vehicle ranges from 0.18 to 0.

33.

5. The all-terrain vehicle of claim 4, wherein: The all-terrain vehicle also includes a seat assembly, the frame and the body cover are surrounded by a cockpit, the seat assembly is at least partially disposed in the cockpit, and the body cover includes a cargo box connected to the rear frame; in the length direction of the all-terrain vehicle, the cooling module is disposed behind the seat assembly, and the cooling module is disposed in front of the cargo box.

6. The all-terrain vehicle of claim 4, wherein: The cooling module also includes a fixing frame, which is connected to the rear frame, and the fixing frame includes a first mounting surface and a second mounting surface. The fan device is connected to the first mounting surface, the intercooler is connected to the second mounting surface, and the radiator is connected to the first mounting surface. The radiator is located between the fan device and the intercooler.

7. The all-terrain vehicle of claim 1, wherein: The frame and the body cover are surrounded by a cockpit, and the all-terrain vehicle also includes a fuel system, which is arranged in the frame and at least partially connected to the power system; the fuel system includes a fuel tank, which is arranged in the front of the cockpit and defines a longitudinal plane perpendicular to the width direction of the all-terrain vehicle, the projection of the cockpit along the width direction on the longitudinal plane is the cockpit projection, the projection of the fuel tank along the width direction on the longitudinal plane is the fuel tank projection, and the fuel tank projection is located in front of the cockpit projection.

8. The all-terrain vehicle of claim 7, wherein: The cockpit comprises a first upper beam, a second upper beam, a first lower beam, a second lower beam and an oblique beam, wherein the first upper beam, the second upper beam, the first lower beam and the second lower beam extend in the width direction of the all-terrain vehicle, both sides of the first upper beam are connected to the first lower beam through the oblique beam, and the second upper beam The two sides of the first upper beam are connected to the second lower beam through the oblique beam, the first upper beam, the second upper beam, the first lower beam, the second lower beam and the oblique beam constitute a accommodating space, and the fuel tank is arranged in the accommodating space.

9. The all-terrain vehicle of claim 7, wherein: The fuel system further comprises a filling pipe connected to the fuel tank, wherein the filling pipe is arranged in front of the fuel tank in the length direction of the all-terrain vehicle.

10. The all-terrain vehicle of claim 1, wherein: The travel assembly includes a left front wheel and a right front wheel, the transmission system includes a front axle assembly arranged at the front end of the frame, the front axle assembly includes two output ends, and the two output ends are respectively connected to the left front wheel and the right front wheel; The frame includes a front axle mounting bracket surrounding the front axle assembly, the front axle mounting bracket includes a first mounting portion and a second mounting portion, the front axle mounting bracket is connected to the front axle assembly via the first mounting portion and the second mounting portion, and the first mounting portion is located behind the second mounting portion relative to the length direction of the all-terrain vehicle, and the connection direction of the second mounting portion and the front axle assembly is basically parallel to the height direction of the all-terrain vehicle.

11. The all-terrain vehicle of claim 10, wherein: The second mounting portion has an axial hole that penetrates the front axle mounting bracket along the height direction of the all-terrain vehicle, and the axial direction of the axial hole is the connection direction of the first mounting portion and the front axle assembly.

12. The all terrain vehicle of claim 10, wherein: The first mounting portion is configured as a sheet metal component. The first mounting portion has an end surface that is substantially perpendicular to the width direction of the all-terrain vehicle. The front axle assembly abuts against the end surface of the first mounting portion.

13. The all terrain vehicle of claim 10, wherein: The second mounting portion is configured as a through hole, and an axis of the through hole is parallel to a height direction of the all-terrain vehicle.

14. The all terrain vehicle of claim 10, wherein: The frame also includes a movable connecting piece, which is at least partially arranged above the front axle assembly, and the front axle assembly is connected to the front axle mounting bracket through the movable connecting piece; the transmission system also includes a left half-shaft connected to the front axle assembly, defining a transmission center plane that is perpendicular to the length direction of the all-terrain vehicle and passes through the connection point between the front axle assembly and the left half-shaft, and when observed from the width direction of the all-terrain vehicle, the movable connecting piece is at least partially arranged in front of the transmission center plane.

15. The all terrain vehicle of claim 1, wherein: The all-terrain vehicle also includes a powertrain, which is at least partially arranged on the rear frame. The powertrain at least includes an engine, a transmission, an accessory gear train and a reducer. The transmission and the accessory gear train are respectively arranged on the left and right sides of the engine, and the transmission and the accessory gear train at both ends are driven by the crankshaft of the engine. The reducer is arranged at the rear of the engine and is connected to the engine in a transmission manner. The engine includes an air intake and an exhaust port, the air intake is basically facing the front of the all-terrain vehicle, and the exhaust port is basically facing the rear of the all-terrain vehicle. The powertrain also includes a supercharger connected to the exhaust port, and the supercharger is at least partially arranged between the engine and the reducer.

16. The all terrain vehicle of claim 15, wherein: The power assembly also includes an air filter and a muffler. When viewed from the width direction of the all-terrain vehicle, the air filter is at least partially arranged in front of the engine, and the distance from the front end of the air filter to the rear end of the muffler along the length direction of the all-terrain vehicle is defined as the distribution distance of the power assembly; the power assembly is connected to the rear frame through a plurality of suspension components, and the maximum interval of the suspension components distributed along the length direction of the all-terrain vehicle is defined as the assembly distance of the power assembly, and the ratio between the distribution distance and the assembly distance ranges from 1.3 to 1.

9.

17. The all terrain vehicle of claim 15, wherein: The powertrain further includes an intercooler, which is at least partially disposed above the engine.

18. An all-terrain vehicle comprising: A vehicle frame, the vehicle frame comprising a rear frame disposed at the rear of the all-terrain vehicle; a body covering, the body covering being at least partially disposed on the vehicle frame; A power system, wherein the power system is arranged in the rear frame, and the rear frame supports the power system; a transmission system at least partially connected to the power system; A traveling assembly, the traveling assembly being arranged below the frame and at least partially connected to the transmission system; a cooling system, the cooling system being at least partially connected to the power system; Wherein: the cooling system is arranged in the rear frame, the cooling system includes a cooling module at least partially connected to the power system and a guide mechanism for guiding air for the cooling module, the guide mechanism basically extends along the width direction of the all-terrain vehicle, the guide mechanism includes a guide shell and an air inlet member arranged at at least one end of the guide shell, an air chamber is formed inside the guide shell, and the air inlet member is connected to the air chamber; the cooling module is at least partially arranged in the air chamber.

19. The all terrain vehicle of claim 18, wherein: The all-terrain vehicle further comprises a door assembly, wherein the door assembly is connected to the vehicle frame, and in the length direction of the all-terrain vehicle, the door assembly is located in front of the air inlet member.

20. The all terrain vehicle of claim 18, wherein: The air inlet member includes an air inlet, an extension line of the air inlet is defined as an air inlet extension line, a longitudinal plane perpendicular to the width direction of the all-terrain vehicle is defined, and an angle between the air inlet extension line and the longitudinal plane ranges from 30° to 70°.

21. The all terrain vehicle of claim 18, wherein: The frame and the body cover are surrounded by a cockpit, and the cooling module includes an intercooler, a radiator and a fan device, the fan device is arranged on one side of the radiator, and the intercooler is arranged on the other side of the radiator; the extension plane of the cooling module is defined as the cooling module plane, the axis of the fan is perpendicular to the cooling module plane, and the ratio of the dimension of the cooling module along the axial direction of the fan to the dimension of the cooling module along the width direction of the all-terrain vehicle is in the range of 0.18 to 0.

33.

22. The all terrain vehicle of claim 21, wherein: The all-terrain vehicle also includes a seat assembly, which is at least partially arranged in the cockpit, and the body covering includes a cargo box connected to the rear frame; in the length direction of the all-terrain vehicle, the cooling module is arranged behind the seat assembly, and the cooling module is arranged in front of the cargo box.

23. The all terrain vehicle of claim 22, wherein: The cooling module also includes a fixing frame, which is connected to the rear frame, and the fixing frame includes a first mounting surface and a second mounting surface. The fan device is connected to the first mounting surface, the intercooler is connected to the second mounting surface, and the radiator is connected to the first mounting surface. The radiator is located between the fan device and the intercooler.

24. The all terrain vehicle of claim 18, wherein: The frame and the body cover are surrounded by a cockpit, and the all-terrain vehicle also includes a fuel system, which is arranged in the frame and at least partially connected to the power system; the fuel system includes a fuel tank, which is arranged in the front of the cockpit and defines a longitudinal plane perpendicular to the width direction of the all-terrain vehicle, the projection of the cockpit along the width direction on the longitudinal plane is the cockpit projection, the projection of the fuel tank along the width direction on the longitudinal plane is the fuel tank projection, and the fuel tank projection is located in front of the cockpit projection.

25. The all terrain vehicle of claim 24, wherein: The cockpit includes a first upper beam, a second upper beam, a first lower beam, a second lower beam and an oblique beam, the first upper beam, the second upper beam, the first lower beam and the second lower beam extend along the width direction of the all-terrain vehicle, both sides of the first upper beam are connected to the first lower beam through the oblique beam, both sides of the second upper beam are connected to the second lower beam through the oblique beam, the first upper beam, the second upper beam, the first lower beam, the second lower beam and the oblique beam constitute a accommodating space, and the fuel tank is arranged in the accommodating space.

26. The all terrain vehicle of claim 24, wherein: The fuel system further comprises a filling pipe connected to the fuel tank, wherein the filling pipe is arranged in front of the fuel tank in the length direction of the all-terrain vehicle.

27. The all terrain vehicle of claim 18, wherein: The travel assembly includes a left front wheel and a right front wheel, the transmission system includes a front axle assembly arranged at the front end of the frame, the front axle assembly includes two output ends, and the two output ends are respectively connected to the left front wheel and the right front wheel; The frame includes a front axle mounting bracket surrounding the front axle assembly, the front axle mounting bracket includes a first mounting portion and a second mounting portion, the front axle mounting bracket is connected to the front axle assembly via the first mounting portion and the second mounting portion, and the first mounting portion is located behind the second mounting portion relative to the length direction of the all-terrain vehicle, and the connection direction of the second mounting portion and the front axle assembly is basically parallel to the height direction of the all-terrain vehicle.

28. The all terrain vehicle of claim 27, wherein: The second mounting portion is an axial hole that passes through the front axle mounting bracket along the height direction of the all-terrain vehicle, and the axial direction of the axial hole is the connection direction between the first mounting portion and the front axle assembly; the first mounting portion is configured as a sheet metal component, and the first mounting portion has an end face that is basically perpendicular to the width direction of the all-terrain vehicle, and the front axle assembly abuts against the end face of the first mounting portion.

29. The all terrain vehicle of claim 27, wherein: The second mounting portion is configured as a through hole, and an axis of the through hole is parallel to a height direction of the all-terrain vehicle.

30. The all terrain vehicle of claim 27, wherein: The frame also includes a movable connecting piece, which is at least partially arranged above the front axle assembly, and the front axle assembly is connected to the front axle mounting bracket through the movable connecting piece; the transmission system also includes a left half-shaft connected to the front axle assembly, defining a transmission center plane that is perpendicular to the length direction of the all-terrain vehicle and passes through the connection point between the front axle assembly and the left half-shaft, and when observed from the width direction of the all-terrain vehicle, the movable connecting piece is at least partially arranged in front of the transmission center plane.

31. The all terrain vehicle of claim 18, wherein: The all-terrain vehicle also includes a powertrain, which is at least partially arranged on the rear frame. The powertrain at least includes an engine, a transmission, an accessory gear train and a reducer. The transmission and the accessory gear train are respectively arranged on the left and right sides of the engine, and the transmission and the accessory gear train at both ends are driven by the crankshaft of the engine. The reducer is arranged at the rear of the engine and is connected to the engine in a transmission manner. The engine includes an air intake and an exhaust port, the air intake is basically facing the front of the all-terrain vehicle, and the exhaust port is basically facing the rear of the all-terrain vehicle. The powertrain also includes a supercharger connected to the exhaust port, and the supercharger is at least partially arranged between the engine and the reducer.

32. The all terrain vehicle of claim 31 , wherein: The power assembly further includes an air filter and a muffler. When viewed from the width direction of the all-terrain vehicle, the air filter is at least partially arranged in front of the engine. The distance from the front end of the air filter to the rear end of the muffler extending along the length direction of the all-terrain vehicle is defined as the distribution distance of the power assembly. The power assembly is connected to the rear frame through a plurality of suspension components. The maximum spacing of the suspension components distributed along the length direction of the all-terrain vehicle is defined as the distribution distance of the power assembly. The assembly distance of the force assembly, the ratio between the distribution distance and the assembly distance ranges from 1.3 to 1.

9.

33. The all terrain vehicle of claim 31 , wherein: The powertrain further includes an intercooler, which is at least partially disposed above the engine.

34. An all-terrain vehicle comprising: A vehicle frame, the vehicle frame comprising a rear frame disposed at the rear of the all-terrain vehicle; a body covering, the body covering being at least partially disposed on the vehicle frame; a power system, the power system being supported by the vehicle frame; a transmission system at least partially connected to the power system; a travel assembly, the travel assembly being at least partially connected to the transmission system; a cooling system, the cooling system being at least partially connected to the power system; a vehicle door assembly, the vehicle door assembly being connected to the vehicle frame; Wherein: the cooling system is supported by the rear frame, the cooling system includes a cooling module at least partially connected to the power system and a guide mechanism for guiding air for the cooling module, the guide mechanism includes a guide shell and air inlet pieces arranged on both sides of the guide shell; when viewed from the front side of the all-terrain vehicle, the door assembly is located between the air inlet pieces on both sides.

35. The all terrain vehicle of claim 34, wherein: In the length direction of the all-terrain vehicle, the door assembly is located in front of the air inlet member.

36. The all terrain vehicle of claim 34, wherein: The air inlet member includes an air inlet, an extension straight line of the air inlet is defined as an air inlet extension straight line, a longitudinal plane perpendicular to the width direction of the all-terrain vehicle is defined, a reference plane perpendicular to the height direction of the all-terrain vehicle is defined, an angle range between the air inlet extension straight line and the longitudinal plane is 30° to 70°, and an angle range between the air inlet extension straight line and the reference plane is 0° to 30°.

37. The all terrain vehicle of claim 36, wherein: The air inlet includes an upper air inlet, which is arranged at the upper part of the air inlet. The transmission system also includes a transmission and a transmission air intake pipe, one end of the transmission air intake pipe is connected to the upper air inlet, and the other end of the transmission air intake pipe is connected to the transmission. The power system also includes an air filter and an air filter air intake pipe, one end of the air filter air intake pipe is connected to the upper air inlet, and the other end of the air filter air intake pipe is connected to the air filter.

38. The all terrain vehicle of claim 36, wherein: The air inlet includes an upper air inlet, which is arranged at the upper part of the air inlet. The cooling system also includes a cooling kettle, a part of which is connected to the power system, and another part of which is connected to the cooling module. In the length direction of the all-terrain vehicle, the cooling kettle is arranged behind the upper air inlet.

39. The all terrain vehicle of claim 34, wherein: The transmission system further includes a transmission, and the transmission includes a transmission exhaust port. In the length direction of the all-terrain vehicle, the transmission exhaust port is arranged toward the rear.

40. The all terrain vehicle of claim 34, wherein: The air guide mechanism also includes an auxiliary air inlet member, which is arranged at the front end of the air guide shell. The all-terrain vehicle also includes a seat assembly. In the length direction of the all-terrain vehicle, the auxiliary air inlet member and the seat assembly partially overlap. The air guide shell, the air inlet member and the auxiliary air inlet member are integrally formed.

41. The all terrain vehicle of claim 40, wherein: Along the height direction of the all-terrain vehicle, the top end of the seat assembly is arranged lower than the bottom end of the auxiliary air inlet member, or The top end of the seat component is arranged higher than the bottom end of the auxiliary air inlet member, and the top end of the seat component is arranged lower than the top end of the auxiliary air inlet member.

42. The all terrain vehicle of claim 41, wherein: A transverse plane perpendicular to the length direction of the all-terrain vehicle is defined, the projection of the air guide mechanism along the length direction of the all-terrain vehicle on the transverse plane is the projection of the air guide mechanism, the projection of the auxiliary air inlet piece along the length direction of the all-terrain vehicle on the transverse plane is the projection of the auxiliary air inlet piece, and the ratio of the dimension of the auxiliary air inlet piece projection along the width direction of the all-terrain vehicle to the dimension of the air guide mechanism projection along the width direction of the all-terrain vehicle is in a range of 0.2 to 0.

4.

43. The all terrain vehicle of claim 36, wherein: The cooling system comprises a cooling module, which is connected to the rear frame. The cooling module comprises an intercooler, a radiator and a fan device, wherein the fan device is arranged on one side of the radiator and the intercooler is arranged on the other side of the radiator.

44. The all terrain vehicle of claim 34, wherein: In the height direction of the all-terrain vehicle, the flow guide housing and the power system at least partially overlap, and the ratio of the size of the flow guide mechanism along the width direction of the all-terrain vehicle to the size of the flow guide housing along the width direction of the all-terrain vehicle ranges from 1.1 to 2.

2.

45. The all terrain vehicle of claim 34, wherein: The bottom of the deflector shell is tilted, and the extension plane of the bottom of the deflector shell is defined as the bottom extension plane. A reference plane perpendicular to the height direction of the all-terrain vehicle is defined, and the angle between the bottom extension plane and the reference plane ranges from 10° to 30°. A removable cover is also provided on the deflector shell.

46. ​​The all terrain vehicle of claim 34, wherein: The all-terrain vehicle also includes a powertrain, which is at least partially arranged on the rear frame. The powertrain at least includes an engine, a transmission, an accessory gear train and a reducer. The transmission and the accessory gear train are respectively arranged on the left and right sides of the engine, and the transmission and the accessory gear train at both ends are driven by the crankshaft of the engine. The reducer is arranged at the rear of the engine and is connected to the engine in a transmission manner. The engine includes an air inlet and an exhaust port. The air inlet is basically oriented toward the front of the all-terrain vehicle, and the exhaust port is basically oriented toward the rear of the all-terrain vehicle; the powertrain also includes a supercharger connected to the exhaust port, and the supercharger is at least partially arranged between the engine and the reducer.

47. The all terrain vehicle of claim 46, wherein: The powertrain further includes an intercooler, which is at least partially disposed above the engine.

48. The all terrain vehicle of claim 47, wherein: A preset space for air circulation is arranged in front of the intercooler, and the depth of the preset space extending along the length direction of the all-terrain vehicle ranges from 128 to 284.

49. The all terrain vehicle of claim 46, wherein: The accessory gear train includes a first motor and a second motor, the first motor is connected to the crankshaft of the engine, and the first motor always maintains a power generation state when the engine is working, and the second motor is transmission-connected to the first motor; when the power consumption range of the all-terrain vehicle is a preset threshold, the second motor switches to the power generation state.

50. The all terrain vehicle of claim 49, wherein: The first motor is a permanent magnet motor, and the second motor is an excitation motor.

51. The all terrain vehicle of claim 47, wherein: The power assembly includes an exhaust pipe having two ends respectively connected to the supercharger and the muffler, and a ratio between a length of the exhaust pipe extending along a length direction of the all-terrain vehicle and a distribution distance of the power assembly ranges from 0.3 to 0.

5.

52. The all terrain vehicle of claim 46, wherein: The frame and the body cover are surrounded by a cockpit, the all-terrain vehicle further comprising a fuel tank disposed in front of the cockpit, defining a longitudinal plane perpendicular to the width direction of the all-terrain vehicle, the projection of the cockpit on the longitudinal plane along the width direction being the cockpit projection, A projection of the fuel tank along the width direction on the longitudinal plane is a fuel tank projection, and the fuel tank projection is located in front of the cockpit projection.

53. The all terrain vehicle of claim 46, wherein: The cooling system includes air inlet components distributed on the left and right sides of the all-terrain vehicle, the air inlet components include an upper air inlet arranged on the upper part thereof, the transmission is connected to the upper air inlet through a transmission air inlet pipe, and the powertrain also includes an air filter, and the air filter is connected to the upper air inlet through an air filter air inlet pipe.

54. The all terrain vehicle of claim 53, wherein: The transmission includes a transmission exhaust port, and in the length direction of the all-terrain vehicle, the transmission exhaust port is arranged toward the rear.

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