Air volume distribution system and motorcycle

Abstract

The application discloses a wind volume distribution system and a motorcycle, and relates to the technical field of motorcycle cooling systems. The wind volume distribution system comprises a radiator, which is arranged between a front mudguard and an oil tank of the motorcycle, and is provided with front inner lining plates on the left and right sides of the radiator. The two front inner lining plates extend towards the side of the front mudguard in an outwardly expanding manner. An upper flow guide cover is arranged on the upper side of the radiator. A first air duct for air flowing towards the radiator is formed between the upper flow guide cover and the front mudguard. An upper section of a second air duct is formed between the upper flow guide cover and the oil tank. A rear flow guide cover is arranged on the air outlet side of the radiator. The rear flow guide cover comprises a rear back plate which is located between the radiator and the oil tank. The upper end of the rear back plate extends towards the upper flow guide cover. A lower section of the second air duct is formed between the rear back plate and the oil tank. A bottom guard plate is arranged at the lower end of the rear back plate. The bottom guard plate extends towards the oil pan. A tail section of the second air duct is formed between the bottom guard plate and the oil tank. The second air duct is arranged to blow air towards the oil pan. The application can ensure that the radiator has sufficient cooling air volume, and can also distribute part of the air volume to cool the oil pan, thereby improving the reliability.

Description

Technical Field

[0001] This application relates to the field of motorcycle technology, and in particular to an airflow distribution system and a motorcycle. Background Technology

[0002] With the rapid development of the motorcycle industry, small and medium displacement scooters have become one of the ways for modern consumers to travel and enjoy leisure. While pursuing freedom and a sense of freedom, people also have increasing demands for riding experience. In terms of power, in addition to pursuing comfortable and smooth power, they are also very concerned about the ultimate acceleration feeling.

[0003] Extreme acceleration is closely related to the engine's maximum power, requiring increased engine power. Increased power also means a greater need for cooling capacity. Currently, many radiator layouts suffer from insufficient cooling airflow, and increasing the size of the radiator and fan will correspondingly increase development costs. In addition, increased engine power also places higher demands on oil cooling. In scooters without oil coolers, cooling mainly relies on the engine oil pan. In the past, cooling was mostly enhanced by adding cooling fins. However, scooter body panels provide good coverage, resulting in low airflow utilization. The airflow speed near the oil pan is low, and in some cases, there is even a speed dead zone. Therefore, simply adding cooling fins is insufficient to meet the cooling requirements.

[0004] Therefore, in view of the above-mentioned technical problems, how to improve the current motorcycle cooling system's insufficient cooling air volume and unreasonable cooling air distribution are technical problems that need to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this application is to provide an airflow distribution system and a motorcycle that can ensure that the radiator has sufficient cooling airflow to allow the engine to circulate and operate under suitable temperature conditions, and can also distribute a portion of the airflow to cool the oil pan, thereby improving the oil cooling performance and increasing reliability.

[0006] To achieve the above objectives, this application provides an airflow distribution system, comprising:

[0007] A radiator is located between the front fender and the fuel tank of the motorcycle. The radiator has front inner liner plates on both sides, and the two front inner liner plates extend outward toward the side where the front fender is located.

[0008] An upper air guide is provided on the upper side of the radiator. The upper air guide and the front fender form a first air duct for air intake toward the radiator, and the upper air guide and the fuel tank form the upper section of a second air duct.

[0009] A rear air duct is provided on the air outlet side of the radiator. The rear air duct includes a rear back plate located between the radiator and the oil tank. The upper end of the rear back plate extends toward the upper air duct. The rear back plate and the oil tank form the lower section of the second air duct.

[0010] A bottom guard plate is provided at the lower end of the rear back plate. The bottom guard plate extends toward the oil pan. The bottom guard plate and the oil tank form the tail section of the second air duct. The second air duct exhausts air toward the oil pan.

[0011] Preferably, the overall curvature of the upper fairing is consistent with the curvature of the corresponding front fender, the upper end of the upper fairing is lower than the highest point of the front fender, and the lower end of the upper fairing is higher than the lowest point of the front fender.

[0012] Preferably, there is an inclined surface on the upper end of the fuel tank near the second air duct, the upper end of the upper fairing does not exceed the tangent position of the inclined surface, and the upper end of the upper fairing is fixedly connected to the frame of the motorcycle.

[0013] Preferably, the tangent at the lower end of the upper air guide shroud points towards the heat sink, and the direction of the tangent is consistent with the direction of airflow in the first air duct.

[0014] Preferably, there is an inflection point at the connection between the lower end of the upper air guide and the radiator, and the inflection point is located close to the radiator.

[0015] Preferably, the overall curvature of the rear backplate is consistent with the curvature of the lower part of the fuel tank, and the position of the lower end of the rear backplate is consistent with or within 2cm below the position of the oil pan.

[0016] Preferably, the bottom guard plate is horizontally arranged, and the lowest point of the oil tank is higher than the lowest point of the oil pan, so as to direct the airflow of the second air duct to the oil pan.

[0017] Preferably, the rear air shroud further includes side plates located on both sides of the rear back panel, the two side plates and the rear back panel together form a heat dissipation duct, the fan of the radiator is provided on the air inlet side of the heat dissipation duct, and the air outlet side of the heat dissipation duct is directed towards the ground.

[0018] Preferably, the upper fairing and the rear fairing are provided with side guide plates extending towards the fuel tank on both sides, and the side guide plates are fixedly connected to the motorcycle frame to reduce the airflow dissipation in the second air duct.

[0019] A motorcycle, characterized in that it includes the airflow distribution system described above.

[0020] Compared to the aforementioned background technology, this application modifies the shape and angle of the front inner liner plates, causing them to expand outwards. This creates a "trumpet-shaped" air-gathering structure, increasing the air intake area and reducing the radiator's airflow resistance. The airflow from both sides of the motorcycle's front wheel, after being gathered by the inner liner plates, can enter the radiator more effectively, increasing the radiator's airflow and improving the speed dead zone and surface speed uniformity on both sides of the radiator. This application divides the air duct between the front fender and the fuel tank into a first and a second air duct using an upper diffuser, forming a "λ"-shaped air duct. The first air duct can exhaust air towards the radiator, increasing the airflow into the radiator core, enhancing the radiator's heat exchange effect, and improving its cooling capacity. The upper section of the second air duct consists of the upper diffuser and the fuel tank, the lower section consists of the rear diffuser and the fuel tank, and the tail end of the second air duct consists of the bottom guard plate and the fuel tank. Furthermore, the second air duct can exhaust air towards the oil pan, cooling the bottom of the oil pan. Therefore, this application can ensure that the front radiator has sufficient airflow to cool the cooling fins, and can also allocate some airflow to the rear of the vehicle to cool the bottom of the oil pan, thereby improving the oil cooling performance and increasing reliability. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the air volume distribution system provided in the embodiments of this application;

[0023] Figure 2 A schematic diagram of the radiator and front inner liner provided in an embodiment of this application;

[0024] Figure 3 This is a schematic diagram of the deflection angle of the front inner liner provided in an embodiment of this application;

[0025] Figure 4 This is a schematic diagram of the rear fairing structure provided in an embodiment of this application;

[0026] Figure 5 This is a schematic diagram of the air volume distribution path of the air volume distribution system provided in the embodiments of this application;

[0027] Figure 6 This is a schematic diagram of the side guide plate structure provided in an embodiment of this application.

[0028] In the picture:

[0029] 1-Radiator; 2-Front inner liner; 3-Upper air deflector; 4-Rear air deflector; 5-Bottom guard plate; 6-Fuel tank; 7-Sloping surface; 8-Front mudguard; 9-Oil pan; 10-Side air deflector; 11-Fan; 12-Rear back plate; 13-Side plate; 14-First air duct; 15-Second air duct; 16-Inflection point. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] It should be noted that in this embodiment, the orientation or positional relationship indicated by terms such as "upper," "lower," "front," and "rear" is based on the orientation or positional relationship shown in the accompanying drawings. It is used only for the convenience of describing this application and for simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] like Figure 1 As shown, in this embodiment, an airflow distribution system is provided, which includes a radiator 1, an upper diffuser 3, a rear diffuser 4, and a bottom guard plate 5. The radiator 1 is a conventional radiator 1 found in existing motorcycles. The radiator 1 is located between the front fender 8 and the fuel tank 6 of the motorcycle. Front inner liner plates 2 are provided on the left and right sides of the radiator 1. Compared with the traditional inner liner plate structure, this application extends the two front inner liner plates 2 outward towards the side where the front fender 8 is located. Please refer to... Figure 2 This increases the air intake at the front of the radiator 1, fully utilizing the airflow on both sides of the front vehicle body, reducing the air intake resistance of the radiator 1, and increasing the air intake volume of the radiator 1. Depending on the airflow requirements and the assembly with the fairing, the outward expansion angle can be selected between 10° and 25°. This angle is the deflection angle of the front inner liner 2 in the positive X direction towards the positive and negative Y directions, as detailed in the reference [reference needed]. Figure 3 .

[0034] The upper air guide 3 is located on the upper side of the radiator 1. The upper air guide 3 and the front mudguard 8 form a first air duct 14 for air intake towards the radiator 1. At the same time, the upper air guide 3 and the fuel tank 6 form the upper section of the second air duct 15. The first air duct 14 can increase the air intake of the radiator 1 core, enhance the heat exchange effect of the radiator 1, and improve the cooling capacity of the radiator 1.

[0035] The rear air deflector 4 is located on the air outlet side of the radiator 1. The rear air deflector 4 includes a rear back plate 12 located between the radiator 1 and the oil tank 6. The upper end of the rear back plate 12 extends towards the upper air deflector 3, and the rear back plate 12 and the oil tank 6 form the lower section of the second air duct 15. The bottom guard plate 5 is located at the lower end of the rear back plate 12 and extends towards the oil pan 9. The bottom guard plate 5 and the oil tank 6 form the tail section of the second air duct 15, which exhausts air towards the oil pan 9. Through the second air duct 15, more airflow can be guided to the bottom of the oil pan 9, enhancing the heat dissipation effect of the oil pan 9.

[0036] Based on the above embodiments, the arrangement of the front inner liner 2 and the two air ducts forms an air volume distribution system. The air volume distribution can be controlled by adjusting the height of the upper guide shroud 3, increasing the air intake of the radiator 1, reducing the coolant temperature, ensuring engine reliability, and extending engine service life. Both the air volume and air speed can be greatly improved.

[0037] In summary, this application changes the shape and angle of the front inner liner 2 so that the two front inner liner 2 are arranged in an outward expansion manner, thereby forming a "trumpet-shaped" air-gathering structure, increasing the air inlet area and reducing the air intake resistance of the radiator 1; the airflow on both sides of the motorcycle's front wheel can enter the radiator 1 to a greater extent after passing through the air-gathering effect of the inner liner, increasing the air intake of the radiator 1, and improving the speed dead zone and surface speed uniformity on both sides of the radiator 1. This application divides the air duct between the front fender 8 and the fuel tank 6 into a first air duct 14 and a second air duct 15 by using an upper air deflector 3, forming a "λ"-shaped air duct. The first air duct 14 can exhaust air to the radiator 1, increasing the air intake of the radiator 1 core, enhancing the heat exchange effect of the radiator 1, and improving the cooling capacity of the radiator 1. The upper section of the second air duct 15 is composed of the upper air deflector 3 and the fuel tank 6, the lower section of the second air duct 15 is composed of the rear air deflector 4 and the fuel tank 6, and the tail end of the second air duct 15 is composed of the bottom guard plate 5 and the fuel tank 6. Furthermore, the second air duct 15 can exhaust air towards the oil pan 9, thereby cooling the bottom of the oil pan 9. Therefore, this application can ensure that the front radiator 1 has sufficient airflow to cool the cooling fins, and can also allocate some airflow to the rear of the vehicle to cool the bottom of the oil pan 9, improving the oil cooling performance and increasing reliability.

[0038] In some embodiments, in order to enable the radiator 1 to better receive the airflow within the first air duct 14, the angle between the radiator 1 and the horizontal ground can be maintained between 60° and 80°, and the upper end of the radiator 1 is inclined backward relative to the lower end of the radiator 1. Please refer to Figure 1 or Figure 5 .

[0039] Please refer to Figure 5 The simplified diagram of the airflow distribution system shows that, based on the "trumpet-shaped" air-gathering mechanism of the front inner liner 2, in order to ensure smoother airflow within the first air duct 14, the overall curvature of the upper guide shroud 3 can be kept consistent with the curvature of the corresponding front fender 8. At the same time, the upper end of the upper guide shroud 3 should be lower than the highest point of the front fender 8, and the lower end of the upper guide shroud 3 should be higher than the lowest point of the front fender 8, so as to ensure that the upper guide shroud 3 can fully cooperate with the front fender 8 to form the first air duct 14, thereby providing sufficient airflow for the radiator 1.

[0040] In addition, there is an inclined surface 7 on the upper part of the fuel tank 6 near the second air duct 15. Please refer to... Figure 5 Considering that some airflow also needs to be distributed to the second air duct 15, the upper end of the upper fairing 3 should preferably not exceed the tangent position of the inclined surface 7, so that the airflow can be divided into two paths at the upper end of the upper fairing 3 and enter the first air duct 14 and the second air duct 15 respectively; the upper end of the upper fairing 3 can be fixed to the frame by means of lugs and bolts.

[0041] The lower end of the upper fairing 3 also has a certain tilt angle. The tangent of the lower end of the upper fairing 3 points to the radiator 1, and the direction of the tangent is consistent with the flow direction of the airflow in the first air duct 14. Combined with the feature that the overall curvature of the upper fairing 3 is consistent with the curvature of the front fender 8, the airflow can flow more smoothly to the radiator 1 and is less likely to generate turbulence.

[0042] Because the radiator 1 is tilted relative to the ground, and the upper shroud 3 is set with a certain curvature, there is an inflection point 16 at the connection between the upper shroud 3 and the radiator 1. Please refer to... Figure 5 The inflection point 16 should be positioned as close as possible to the radiator 1 to widen the airflow duct and increase the air intake. Traditional upper shrouds not only alter the airflow direction at the lower end but also have an inflection point that is too far from the radiator, resulting in a large velocity dead zone at the top of the radiator, which is detrimental to radiator cooling.

[0043] The tangent at the lower end of the front fender 8 can intersect with the lowest point of the lower end of the radiator 1. If the tangent at the lower end of the front fender 8 is lower than the lowest point of the lower end of the radiator 1, it will cause airflow to escape and be lost from the space between the tangent and the lowest point of the radiator 1. If the tangent at the lower end of the front fender 8 is higher than the lowest point of the radiator 1, it will cause the airflow to be unable to cool the lower end of the radiator 1, resulting in a cooling dead zone.

[0044] Provided that the radiator 1 has sufficient airflow, more airflow can be distributed to cool the oil pan 9 by adjusting the height of the upper part of the upper guide shroud 3, the curvature and lower position of the rear guide shroud 4, and the rear end angle of the bottom guard plate 5. Specifically, the upper part of the upper guide shroud 3 should not exceed the tangent of the inclined surface 7 to ensure that the incoming airflow can smoothly enter the second air duct 15. The overall curvature of the rear back plate 12 should be consistent with the curvature of the lower part of the oil tank 6 to ensure the smoothness of the airflow in the second air duct 15. The lower position of the rear back plate 12 should be consistent with or within 2cm below the position of the oil pan 9 to ensure that the lower position of the rear back plate 12 is lower than the lowest point of the oil tank 6. The bottom guard plate 5 can be set horizontally so that the airflow can smoothly reach the oil pan 9 and cool the oil pan 9.

[0045] Of course, the above-mentioned upper deflector 3, rear deflector 4 and bottom guard plate 5 can be set in ways including but not limited to the methods given above, as long as the airflow can reach the radiator 1 through the first channel and the oil pan 9 through the second channel, all of which fall within the protection scope of this application.

[0046] Please also refer to Figure 4 The rear diffuser 4 also includes side plates 13 located on both sides of the rear back plate 12. The two side plates 13 and the rear back plate 12 enclose a heat dissipation duct. The fan 11 of the heat sink 1 is installed on the air inlet side of the heat dissipation duct, and the air outlet side of the heat dissipation duct faces the ground. It can be seen that the rear diffuser 4 of this application can use the rear back plate 12 to guide the hot air of the fan 11 to the ground, avoiding blowing it onto electrical components and affecting reliability. At the same time, the two side plates 13 are used to prevent the hot air blown out from escaping in all directions.

[0047] Please refer to Figure 6 Side guide plates 10 extending towards the fuel tank 6 are provided on both sides of the upper fairing 3 and both sides of the rear fairing 4. The side guide plates 10 are fixedly connected to the motorcycle frame to reduce the airflow dissipation in the second air duct 15. The side guide plates 10 and the frame can be connected to the support lugs by bolts.

[0048] This application also provides a motorcycle that includes the aforementioned airflow distribution system, as well as other necessary components that make up the motorcycle, which will not be described in detail here, but can be referred to in the prior art.

[0049] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0050] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. An air volume distribution system, characterized in that, include: A radiator (1) is located between the front fender (8) and the fuel tank (6) of the motorcycle. The radiator (1) has front inner liner plates (2) on its left and right sides. The two front inner liner plates (2) extend outward toward the side where the front fender (8) is located. The upper air guide (3) is located on the upper side of the radiator (1). The upper air guide (3) and the front mudguard (8) form a first air duct (14) for air intake towards the radiator (1). The upper air guide (3) and the oil tank (6) form the upper section of the second air duct (15). The rear air deflector (4) is located on the air outlet side of the radiator (1). The rear air deflector (4) includes a rear back plate (12) located between the radiator (1) and the oil tank (6). The upper end of the rear back plate (12) extends toward the upper air deflector (3). The lower section of the second air duct (15) is formed between the rear back plate (12) and the oil tank (6). Bottom guard plate (5) is provided at the lower end of the rear back plate (12). The bottom guard plate (5) extends toward the oil pan (9). The bottom guard plate (5) and the oil tank (6) form the tail section of the second air duct (15). The second air duct (15) exhausts air toward the oil pan (9). The overall curvature of the upper fairing (3) is consistent with the curvature of the corresponding front fender (8). The upper end of the upper fairing (3) is lower than the highest point of the front fender (8), and the lower end of the upper fairing (3) is higher than the lowest point of the front fender (8). There is an inclined surface (7) on the upper end of the fuel tank (6) near the second air duct (15). The upper end of the upper fairing (3) does not exceed the tangent position of the inclined surface (7), and the upper end of the upper fairing (3) is fixedly connected to the frame of the motorcycle.

2. The air volume distribution system according to claim 1, characterized in that, The tangent at the lower end of the upper air guide (3) points to the heat sink (1), and the direction of the tangent is consistent with the direction of airflow in the first air duct (14).

3. The air volume distribution system according to claim 1, characterized in that, There is an inflection point (16) at the lower end of the upper guide shield (3) where it connects with the heat sink (1), and the inflection point (16) is located close to the heat sink (1).

4. The air volume distribution system according to claim 1, characterized in that, The tangent at the lower end of the front fender (8) intersects the lowest point at the lower end of the radiator (1).

5. The air volume distribution system according to claim 1, characterized in that, The overall curvature of the back panel (12) is consistent with the curvature of the lower part of the oil tank (6), and the position of the lower end of the back panel (12) is consistent with or within 2cm below the position of the oil pan (9).

6. The air volume distribution system according to claim 1, characterized in that, The rear air shroud (4) also includes side plates (13) located on both sides of the rear back plate (12). The two side plates (13) and the rear back plate (12) enclose each other to form a heat dissipation duct. The fan (11) of the radiator (1) is installed on the air inlet side of the heat dissipation duct, and the air outlet side of the heat dissipation duct is directed towards the ground.

7. The air volume distribution system according to claim 1, characterized in that, Side guide plates (10) extending towards the fuel tank (6) are provided on both sides of the upper guide fairing (3) and both sides of the rear guide fairing (4). The side guide plates (10) are fixedly connected to the frame of the motorcycle to reduce the airflow dissipation in the second air duct (15).

8. A motorcycle, characterized in that, Includes the air volume distribution system according to any one of claims 1-7.

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