Motorcycle

Abstract

The application relates to a motorcycle. The motorcycle comprises a frame, a body cover, a power system and a heat dissipation system. The body cover comprises a front shield, the power system comprises an engine, the heat dissipation system comprises a radiator, and the front shield is located below the radiator. A plane passing through the center of the frame width and being perpendicular to the frame width direction is defined as a longitudinal reference plane, and the radiator and the front shield both pass through the longitudinal reference plane along the frame width direction; along the height direction of the frame, the spacing between the parts of the radiator and the front shield in the longitudinal reference plane ranges from 0 mm to 80 mm; the front shield comprises a plurality of flow guide parts and a plurality of baffles, the flow guide parts can guide the oncoming airflow upwards; a ventilation slot is formed between two adjacent flow guide parts, the ventilation slot is located in front of the engine, the baffle rotates relative to the ventilation slot, and the gap between the baffle and the ventilation slot can be controlled by rotation; when the airflow speed from front to back blowing to the baffle increases, the gap between the baffle and the ventilation slot increases.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to a motorcycle. Background Technology

[0002] In motorcycle cooling design, the radiator is typically located at the front of the vehicle, with a cooling fan behind it. The engine is positioned below and behind the radiator, and a front fairing with cooling vents is located below the radiator and in front of the engine, with the front side of the fairing facing the wind. When the motorcycle is traveling at low speeds (usually below 10 km / h) or in stop-and-go conditions, the already limited airflow mainly flows between the radiator and the front fairing, reaching the vicinity of the engine's outer surface. Thus, although this airflow has some cooling effect on the engine's outer surface, the insufficient airflow through the radiator results in poor radiator cooling performance. Consequently, the coolant used to cool the engine's internal components remains at a relatively high temperature, making it difficult to lower the overall engine operating temperature. Utility Model Content

[0003] In view of this, this application provides a motorcycle whose engine's overall operating temperature is easily reduced.

[0004] One embodiment of this application provides a motorcycle, which includes a frame, a body panel, a running gear system, a power system, and a cooling system. The body panel includes a front hood supported by the frame, the running gear system is at least partially located below the frame, the power system includes an engine supported by the frame, and the cooling system includes a radiator supported by the frame, with the front hood located below the radiator. A plane passing through the center of the frame width and perpendicular to the frame width direction is defined as the longitudinal reference plane. Both the radiator and the front hood pass through the longitudinal reference plane along the frame width direction. Along the height direction of the frame, the gap between the portion of the radiator in the longitudinal reference plane and the portion of the front hood in the longitudinal reference plane ranges from 0 mm to 80 mm. The front hood includes multiple air guides spaced apart from top to bottom, which can guide the oncoming airflow upward. A ventilation slot is formed between two adjacent air guides. The ventilation slot is located in front of the engine. The front hood also includes multiple baffles, which are correspondingly arranged with the ventilation slots. The baffles can rotate relative to the ventilation slots to control their gap with the ventilation slots. When the airflow velocity blowing from front to back to the baffles increases, the gap between the baffles and the ventilation slots increases.

[0005] In some optional embodiments, the ratio of the gap between the portion of the heat sink in the longitudinal reference plane and the portion of the front shroud in the longitudinal reference plane to the height of the portion of the heat sink in the longitudinal reference plane ranges from 0.01 to 0.12; the gap between the portion of the heat sink in the longitudinal reference plane and the portion of the front shroud in the longitudinal reference plane ranges from 0 mm to 40 mm.

[0006] In some optional embodiments, the rear surface of the front cover is provided with multiple mounting seats, which are correspondingly arranged with the ventilation slots. The baffle is rotatably mounted on the mounting seat to have a closed state covering the ventilation slots and an open state not completely covering the ventilation slots. When the baffle is in the open state, the baffle increases the effective ventilation cross-sectional area of ​​the ventilation slots as the air velocity through the ventilation slots increases.

[0007] In some alternative embodiments, the baffle has a rotation axis located on the upper part of the baffle, and the baffle can switch from an open state to a closed state by its own gravity.

[0008] In some optional embodiments, the baffle has a rotation axis located at the lower part of the baffle, and a drive member is provided on the rear surface of the front cover. The drive member is connected to the baffle, and the baffle can be switched from an open state to a closed state by the driving force of the drive member.

[0009] In some alternative embodiments, the mounting base has a limiting boss on the surface facing the baffle, the limiting boss being used to limit the maximum rotation angle of the baffle.

[0010] In some optional embodiments, the rotation angle of the baffle from the closed state to when it abuts against the limiting boss ranges from 30° to 70°.

[0011] In some optional embodiments, the front cover includes a first heat dissipation section and a second heat dissipation section, with a portion of the airflow guide section and ventilation slots disposed in the first heat dissipation section and another portion of the airflow guide section and ventilation slots disposed in the second heat dissipation section. The first heat dissipation section is located above the second heat dissipation section, and when viewed from above, the second heat dissipation section is located in front of the first heat dissipation section.

[0012] In some alternative embodiments, the front cover includes a contour portion that is V-shaped when viewed from front to back, or the lower portion of the contour portion is V-shaped, and a V-shaped region is formed within the contour portion, wherein the first heat dissipation portion and the second heat dissipation portion are both located within the V-shaped region of the contour portion.

[0013] In some alternative embodiments, in two adjacent ventilation slots of the first heat dissipation section, the width of the upper ventilation slot along the width direction of the frame is greater than the width of the lower ventilation slot along the width direction of the frame.

[0014] In some alternative embodiments, in two adjacent ventilation slots of the second heat dissipation section, the width of the upper ventilation slot along the width direction of the frame is greater than the width of the lower ventilation slot along the width direction of the frame.

[0015] By extending the upper part of the front hood upwards to near the radiator, thus minimizing the vertical distance between them, the airflow at low speeds is easily guided upwards by the hood's air deflectors to the radiator. This allows the radiator to efficiently cool the engine interior. Cooling the engine interior is more effective than cooling the engine's outer surface in lowering overall engine operating temperature. Therefore, at low speeds, the overall engine temperature tends to decrease. At high speeds, not only is sufficient airflow supplied to the radiator, but some airflow also pushes the baffles backwards, increasing the distance between the baffles and the ventilation slots. This additional airflow, after passing through the ventilation slots, reaches the vicinity of the engine's outer surface, cooling it as well. Therefore, at high speeds, both the internal and external surfaces of the engine are cooled, leading to a lower overall operating temperature. Attached Figure Description

[0016] Figure 1 This is a perspective view of a motorcycle in one embodiment of this application.

[0017] Figure 2 This is a schematic diagram showing the positional relationship between the heat sink and the front shroud in the prior art.

[0018] Figure 3 This is a schematic diagram showing the positional relationship between the heat sink and the front shroud in one embodiment of this application.

[0019] Figure 4 This is a perspective view of the front shield in one embodiment of this application.

[0020] Figure 5 yes Figure 4 Enlarged view of the structure of part A in the middle.

[0021] Figure 6 This is a schematic diagram showing the positional relationship between the front wheels and the front guard in one embodiment of this application. Detailed Implementation

[0022] To further illustrate the technical means and effects adopted by this application to achieve the intended purpose, the following description, in conjunction with the accompanying drawings and embodiments, is provided. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0024] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the embodiments and features described below can be combined with each other.

[0025] Please see Figure 1 One embodiment of this application provides a motorcycle 100, including a frame 11, a body cover 12, a running system 13, a power system 14, and a cooling system 15. The body cover 12 at least partially covers the frame 11, the running system 13 is at least partially located under the frame 11, and the power system 14 and the cooling system 15 are supported by the frame 11.

[0026] For ease of description, this application defines the directions of front, back, left, right, up, and down. The front-back direction refers to the length direction of the motorcycle frame 11, the left-right direction refers to the width direction of the motorcycle frame 11, and the up-down direction refers to the height direction of the motorcycle frame 11. In this embodiment, the directions of front, back, left, right, up, and down are based on the motorcycle 100 traveling on a horizontal road surface, not on a sloping road surface. A plane passing through the center of the width of the frame 11 and perpendicular to the width direction of the frame 11 is defined as the longitudinal reference plane 101.

[0027] The walking system 13 includes a front wheel 131 located in front of the motorcycle 100 and a rear wheel 132 located behind the motorcycle 100, and the front wheel 131 and the rear wheel 132 are respectively rotatably connected to the frame 11.

[0028] Please see Figure 2 In the prior art, the body panel 12 includes a front shield 121, which is fixedly connected to the frame 11, other body panels 12, or internal structural components. The cooling system 15 includes a radiator 151, which is supported by the frame 11. The front shield 121 is located below the radiator 151, and a ventilation channel S1 for cooling the outer surface of the engine is provided between the front shield 121 and the radiator 151. When the motorcycle 100 is traveling at low speed or sluggishly, the air on the surface of the front shield 121 flows to the outer surface of the engine through the ventilation channel S1. The air intake of the radiator 151 is insufficient, resulting in a high water temperature for cooling the engine, leading to a series of problems such as reduced power, lubrication failure, and mechanical damage to the motorcycle 100.

[0029] Please see Figure 1 and Figure 3In the technical solution of this application, along the height direction of the frame 11, the gap H between the portion of the radiator 151 within the longitudinal reference surface 101 and the portion of the front shroud 121 within the longitudinal reference surface 101 ranges from 0mm to 80mm, further from 0mm to 40mm, and even further from 0mm to 30mm. Optionally, the value of the gap H is any one of the following values ​​or any two of the following values: 0mm, 5mm, 10mm, 15mm, 20mm, 25mm, 30mm, 40mm, 60mm, 80mm. This arrangement keeps the gap between the radiator 151 and the front shroud 121 within a small range, allowing the airflow blowing onto the windward side of the front shroud 121 to be better guided to the radiator 151, thereby improving the operating efficiency of the radiator 151.

[0030] The ratio of the gap H to the height of the portion of the radiator 151 within the longitudinal reference plane 101 ranges from 0 to 0.12, further from 0 to 0.11, and even further from 0.01 to 0.09. Optionally, the value of this ratio is any one of the following values ​​or any two of the following values: 0, 0.01, 0.02, 0.04, 0.06, 0.08, 0.10, 0.12. This setting keeps the gap between the radiator 151 and the front shroud 121 within a small range, allowing the airflow blowing onto the windward side of the front shroud 121 to be better guided to the radiator 151, thereby improving the operating efficiency of the radiator 151.

[0031] The ratio of the distance between the projections of the radiator 151 and the front shroud 121 in a vertical plane to the height of the projection of the radiator 151 in the vertical plane is between 1% and 12%, which is beneficial for controlling a suitable gap between the radiator 151 and the front shroud 121.

[0032] The front shield 121 includes a plurality of air guides 1212a arranged at intervals from top to bottom, and a ventilation slot 1212b is formed between two adjacent air guides 1212a.

[0033] The front shield 121 includes multiple baffles 1212c, and ventilation slots 1212b are correspondingly arranged with the baffles 1212c. The baffles 1212c are used to control the effective ventilation cross-sectional area of ​​the ventilation slots 1212b so that more air flows from the front surface of the front shield 121 to the front surface of the radiator 151.

[0034] When the motorcycle 100 is traveling at low speed or in a slow-moving condition, the baffle 1212c controls the effective ventilation cross-sectional area of ​​the ventilation slot 1212b, and at the same time controls the appropriate gap between the radiator 151 and the front cover 121, so that more air flows from the front surface of the front cover 121 to the front surface of the radiator 151, thereby improving the heat dissipation efficiency of the radiator 151 and improving the heat dissipation performance of the motorcycle 100.

[0035] Preferably, the ratio of the distance between the projections of the radiator 151 and the front shroud 121 in a vertical plane to the height of the projection of the radiator 151 in the vertical plane is between 5% and 10%.

[0036] Specifically, the ratio of the distance between the projections of the radiator 151 and the front shroud 121 in a vertical plane to the height of the projection of the radiator 151 in the vertical plane can be selected as any of the following values ​​or a value within the range of any two values: 1, 1.2, 1.4, 1.6, 1.8, 2, 2.2, 2.4, 2.6, 2.8, 3, 3.2, 3.4, 3.6, 3.8, 4, 4.2, 4.4, 4.6 , 4.8, 5, 5.2, 5.4, 5.6, 5.8, 6, 6.2, 6.4, 6.6, 6.8, 7, 7.2, 7.4, 7.6, 7.8, 8, 8.2, 8.4, 8.6, 8.8, 9, 9.2, 9.4, 9.6, 9.8, 10, 10.2, 10.4, 10.6, 10.8, 11, 11.2, 11.4, 11.6, 11.8, 12.

[0037] In some embodiments, the cooling system 15 includes a cooling fan (not shown) located behind the radiator 151 and fixedly connected to the radiator 151. In other embodiments, the cooling fan is fixedly connected to the body panel 12 or other components.

[0038] Please see Figure 3 and Figure 4 In some embodiments, the rear surface of the front shroud 121 is provided with a plurality of mounting seats 1212d. Each mounting seat 1212d includes two mounting plates d1, which are disposed on the rear surface of the front shroud 121 and located on both sides of the ventilation slot 1212b along the width direction of the frame 11.

[0039] Mounting base 1212d is correspondingly provided with ventilation slot 1212b, and baffle 1212c is rotatably mounted on mounting base 1212d to have a closed state covering ventilation slot 1212b and an open state not completely covering ventilation slot 1212b. When the motorcycle 100 is stationary and no air passes through ventilation slot 1212b, baffle 1212c is in the closed state covering ventilation slot 1212b.

[0040] When the motorcycle 100 moves forward, the air in front of the motorcycle 100 passes through the ventilation slot 1212b. The baffle 1212c is in an open state, partially obscuring the ventilation slot 1212b. As the airflow velocity through the ventilation slot 1212b increases, the effective ventilation cross-sectional area of ​​the ventilation slot 1212b increases. Understandably, the faster the motorcycle 100 travels, the greater the thrust of the wind blowing towards the baffle 1212c, thus reducing the obstruction of the ventilation slot 1212b by the baffle 1212c.

[0041] In some embodiments, the baffle 1212c has a rotation axis L1, which is located in the upper part of the baffle 1212c. The baffle 1212c can generate a torsional torque that rotates toward the ventilation slot 1212b by its own weight, so that the baffle 1212c can switch from an open state to a closed state by its own weight. The baffle 1212c can automatically adjust the opening size of the ventilation slot 1212b according to the wind speed. The structure is simple and easy to assemble.

[0042] In other embodiments, the baffle 1212c has a rotation axis L1 located in the lower part of the baffle 1212c. The rear surface of the front cover 121 is provided with a drive member (not shown). The drive member is connected to the baffle 1212c. The baffle 1212c generates a torsional torque that rotates toward the ventilation slot 1212b by the driving force of the drive member, so that the baffle 1212c switches from an open state to a closed state by the driving force of the drive member.

[0043] Specifically, the driving component is a torsion spring, which is installed at the connection between the baffle 1212c and the mounting base 1212d. Compared to the baffle 1212c relying on its own weight to switch from an open state to a closed state, the baffle 1212c relies on the driving component for drive, which has better force stability. When some openings of ventilation slots 1212b are slightly tilted downwards, the baffle 1212c can also cover the ventilation slots 1212b by the driving force of the driving component.

[0044] Please see Figure 3 and Figure 5 In some embodiments, the surface of the mounting plate d1 facing the baffle 1212c is provided with a limiting boss d2, which is used to limit the maximum rotation angle of the baffle 1212c.

[0045] In some embodiments, the rotation angle of the baffle 1212c from the closed state to when it abuts against the limiting boss d2 ranges from 30° to 70°.

[0046] Preferably, the rotation angle is in the range of 40° to 60°.

[0047] Specifically, the rotation angle can be selected from any of the following angles or an angle within the range of any two angles: 30°, 31°, 32°, 33°, 34°, 35°, 36°, 37°, 38°, 39°, 40°, 41°, 42°, 43°, 44°, 45°, 46°, 47°, 48°, 49°, 50°, 51°, 52°, 53°, 54°, 55°, 56°, 57°, 58°, 59°, 60°, 61°, 62°, 63°, 64°, 65°, 66°, 67°, 68°, 69°, 70°.

[0048] Please see Figure 4 and Figure 6 In some embodiments, the front shield 121 includes a contour portion 1211, which is V-shaped when viewed from the front or rear, or the lower portion of the contour portion 1211 is V-shaped, and a V-shaped region is formed within the contour portion 1211.

[0049] The front cover 121 includes a first heat dissipation section 1212 and a second heat dissipation section 1213, both of which are located within the V-shaped area of ​​the contour section 1211. Part of the airflow guide section 1212a and the ventilation slot 1212b are located in the first heat dissipation section 1212, while another part of the airflow guide section 1212a and the ventilation slot 1212b are located in the second heat dissipation section 1213. The first heat dissipation section 1212 is located above the second heat dissipation section 1213, and viewed from above, the second heat dissipation section 1213 is located in front of the first heat dissipation section 1212, thus forming a rearwardly and upwardly inclined airflow guide structure to guide airflow backward and upward, increasing the air intake of the radiator 151.

[0050] In some embodiments, in the first heat dissipation section 1212, there are multiple ventilation slots 1212b distributed sequentially from top to bottom. In two adjacent ventilation slots 1212b, the width of the upper ventilation slot 1212b along the width direction of the frame 11 is greater than the width of the lower ventilation slot 1212b along the width direction of the frame 11, thereby forming a gradually changing ventilation structure that is wider at the top and narrower at the bottom, so that the ventilation slot 1212b closer to the cooling fan has a larger air intake.

[0051] In some embodiments, in the second heat dissipation section 1213, there are multiple ventilation slots 1212b distributed at intervals from top to bottom. In two adjacent ventilation slots 1212b, the width of the upper ventilation slot 1212b along the width direction of the frame 11 is greater than the width of the lower ventilation slot 1212b along the width direction of the frame 11. Specifically, the width of the lowermost ventilation slot 1212b in the first heat dissipation section 1212 along the width direction of the frame 11 is less than the width of the uppermost ventilation slot 1212b in the second heat dissipation section 1213 along the width direction of the frame 11.

[0052] Furthermore, those skilled in the art should recognize that the above embodiments are merely illustrative of this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of this application's disclosure.

Claims

1. A motorcycle, comprising: Frame; A body panel, including a front hood, said front hood being supported by the vehicle frame; A walking system, at least partially located under the vehicle frame; A powertrain system, including an engine supported by the vehicle frame; A cooling system including a radiator supported by the vehicle frame, with the front shroud located below the radiator; The feature is that a plane passing through the center of the vehicle frame width and perpendicular to the vehicle frame width direction is defined as a longitudinal reference plane, and both the radiator and the front hood pass through the longitudinal reference plane along the vehicle frame width direction; along the height direction of the vehicle frame, the gap between the portion of the radiator in the longitudinal reference plane and the portion of the front hood in the longitudinal reference plane ranges from 0 mm to 80 mm; the front hood includes multiple air guides spaced apart from top to bottom, which can guide the oncoming airflow upward; a ventilation slot is formed between two adjacent air guides, which is located in front of the engine; the front hood also includes multiple baffles, which are correspondingly arranged with the ventilation slots, and the baffles can rotate relative to the ventilation slots to control their gap with the ventilation slots; when the airflow velocity blowing from front to back to the baffles increases, the gap between the baffles and the ventilation slots increases.

2. The motorcycle as described in claim 1, characterized in that, The ratio of the gap between the portion of the radiator in the longitudinal reference plane and the portion of the front shield in the longitudinal reference plane to the height of the portion of the radiator in the longitudinal reference plane ranges from 0 to 0.12; the gap between the portion of the radiator in the longitudinal reference plane and the portion of the front shield in the longitudinal reference plane ranges from 0 mm to 40 mm.

3. The motorcycle as described in claim 1, characterized in that, The rear surface of the front cover is provided with multiple mounting seats, which are correspondingly arranged with the ventilation slot. The baffle is rotatably disposed on the mounting seat so as to have a closed state covering the ventilation slot and an open state not completely covering the ventilation slot. When the baffle is in the open state, the effective ventilation cross-sectional area of ​​the ventilation slot is increased as the air velocity through the ventilation slot increases.

4. The motorcycle as described in claim 3, characterized in that, The baffle has a rotation axis located on the upper part of the baffle, and the baffle can switch from the open state to the closed state by its own gravity.

5. The motorcycle as described in claim 3, characterized in that, The baffle has a rotation axis located at the lower part of the baffle. The rear surface of the front cover is provided with a driving member, which is connected to the baffle. The baffle can switch from the open state to the closed state by the driving force of the driving member.

6. The motorcycle as described in claim 3, characterized in that, The mounting base has a limiting boss on its surface facing the baffle, and the limiting boss is used to limit the maximum rotation angle of the baffle.

7. The motorcycle as described in claim 6, characterized in that, The range of the rotation angle of the baffle from the closed state to when it abuts the limiting boss is 30° to 70°.

8. The motorcycle as described in claim 1, characterized in that, The front cover includes a first heat dissipation section and a second heat dissipation section. Part of the air guide section and the ventilation slot are disposed in the first heat dissipation section, and another part of the air guide section and the ventilation slot are disposed in the second heat dissipation section. The first heat dissipation section is located above the second heat dissipation section, and when viewed from above, the second heat dissipation section is located in front of the first heat dissipation section.

9. The motorcycle as described in claim 8, characterized in that, The front cover includes a contour portion. When viewed from front to back, the contour portion is V-shaped or the lower part of the contour portion is V-shaped, and a V-shaped region is formed within the contour portion. The first heat dissipation portion and the second heat dissipation portion are both located within the V-shaped region of the contour portion.

10. The motorcycle as described in claim 8, characterized in that, In two adjacent ventilation slots of the first heat dissipation section, the width of the upper ventilation slot along the width direction of the vehicle frame is greater than the width of the lower ventilation slot along the width direction of the vehicle frame; and / or, In the two adjacent ventilation slots of the second heat dissipation section, the upper ventilation slot has a greater width along the width direction of the frame than the lower ventilation slot.

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