Cross-country motorcycle with efficient air inlet structure

Abstract

The utility model discloses a cross-country motorcycle with an efficient air inlet structure, which comprises a motorcycle frame body, an engine is arranged in the motorcycle frame body, an air inlet assembly for inputting air into the engine is arranged on the motorcycle frame body, and the air inlet assembly comprises an air filter box and an air inlet pipe. A filtering cavity and an air collecting cavity are formed in the air filtering box left and right, the top of the filtering cavity is communicated with the top of the air collecting cavity, a plurality of layers of air filtering devices are arranged in the filtering cavity from bottom to top, and an air inlet communicated with the lower side of the filtering cavity is formed in the windward side of the air filtering box; the top of the filter cavity is provided with an air suction device connected with an engine storage battery. Compared with the prior art, the air purifier has the advantages that the dust intercepting efficiency is improved by vertically arranging the multiple layers of air filtering devices, and the air suction device is arranged, so that the air inlet pressure is enhanced, and the air inlet efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of motorcycle technology, and in particular to an off-road motorcycle with a high-efficiency air intake structure. Background Technology

[0002] Off-road motorcycles typically operate in complex terrains (such as deserts, mud, and dusty mountain roads). To ensure engine performance, fuel efficiency, and durability, a good intake system is essential. However, traditional intake systems are prone to drawing water droplets into the air filter when the air is being washed or in the rain, which can affect engine performance and fuel efficiency. Therefore, some intake systems with drainage structures have emerged on the market.

[0003] For example, Chinese utility model patent CN214836785U discloses an air intake pipe assembly, which includes a cover and an air intake pipe body with an air intake cavity. The upper part of the air intake pipe body is provided with an opening groove that communicates with the air intake cavity. The cover is placed on the opening groove and the opening groove has an air intake hole that communicates with the air intake cavity. The lower part of the air intake pipe body is provided with a drain hole that communicates with the air intake cavity and an air outlet hole that communicates with the air intake cavity. The drain hole is set corresponding to the air intake hole, and the air outlet hole and the drain hole are offset in the horizontal direction.

[0004] The above solution has the following shortcomings: First, although the drain hole can separate water droplets, it only filters through a single filter element. In a high-concentration dust environment, tiny particles can easily penetrate the filter element and enter the engine, causing cylinder wear. Second, the intake chamber relies on natural airflow, resulting in low intake efficiency. Utility Model Content

[0005] This invention addresses the problems of low air intake efficiency caused by tiny particles easily penetrating the filter and entering the engine in high-concentration dust environments, and the reliance on natural airflow for air intake. The technical problem this invention aims to solve is to provide an off-road motorcycle with a highly efficient air intake structure to address these issues.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: It includes a vehicle frame, an engine is installed inside the vehicle frame, and an air intake assembly for inputting air into the engine is provided on the vehicle frame. The air intake assembly includes an air filter box and an intake pipe. The air filter box has a filter chamber and an air collection chamber arranged on the left and right sides, and the top of the filter chamber and the air collection chamber are connected. Several layers of air filtering devices are arranged from bottom to top inside the filter chamber. The windward side of the air filter box has an air inlet connected to the lower side of the filter chamber. One end of the intake pipe is connected to the air collection chamber, and the other end is connected to the throttle body. An air intake device connected to the engine battery is provided at the top of the filter chamber. When the engine is running, the gas outside the air filter box enters the filter chamber through the air inlet under the action of the air intake device, passes through the air filtering devices, enters the air collection chamber from the top of the filter chamber, and then flows into the throttle body through the intake pipe.

[0007] A further preferred embodiment of this utility model is as follows: the intake assembly has two parts, which are symmetrically arranged on both sides of the vehicle frame. The intake pipes of the two intake assemblies are connected to a Y-shaped pipe at the end near the engine. The ends of the two intake pipes are respectively sealed to the two openings of the Y-shaped pipe. The third opening of the Y-shaped pipe is connected to the engine throttle body.

[0008] A further preferred embodiment of this utility model is: the air inlet is provided with a horizontally arranged air inlet nozzle, the air inlet nozzle has a conical opening, and the air enters the filter chamber from the conical opening of the air inlet nozzle.

[0009] A further preferred embodiment of this utility model is: the bottom of the filter chamber is an inclined surface, and a water outlet is provided at the lowest point of the inclined surface.

[0010] A further preferred embodiment of this utility model is: the air filter device is fixedly provided with sliding strips on both sides, and the filter cavity is provided with sliding grooves on both side walls, and the air filter device is slidably connected in the filter cavity through the cooperation of the sliding strips and sliding grooves.

[0011] A further preferred embodiment of this utility model is: an installation door is hinged at the corresponding position of the air filter box and the filter cavity, and the installation door is used to facilitate the installation or replacement of the air filter device.

[0012] A further preferred embodiment of this utility model is that waterproof sealing rings are provided on the four side walls of the installation door.

[0013] A further preferred embodiment of this utility model is: the air filtration device is composed of multiple filter elements, the outer layer of the multiple filter elements is provided with a stainless steel metal mesh for intercepting large particles in the air, the filter element is an oily sponge filter element for adsorbing fine dust, and the outer surface of the oily sponge filter element is coated with a hydrophobic coating.

[0014] A further preferred embodiment of this utility model is: the air intake device includes a motor and a turbine, the motor is fixed to the top wall of the filter chamber and powered by an engine battery, and the turbine is connected to the output end of the motor.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. By vertically installing multiple layers of air filters in the filter chamber, air flows from bottom to top, extending the filtration path, improving dust interception efficiency, and ensuring clean air entering the engine. At the same time, during the upward movement of the air, some of the moisture carried in the air can adhere to the air filter, resulting in drier air and improving engine performance and service life.

[0017] 2. The intake device enhances intake pressure and improves intake efficiency, solving the problem of insufficient air intake in traditional naturally aspirated engines in bumpy off-road environments.

[0018] 3. The air filter box is divided into a filter chamber and an air collection chamber to separate the filtration and air collection processes, thus preventing unfiltered air from directly entering the engine. Attached Figure Description

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be regarded as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0020] Figure 1 This is one of the three-dimensional structural schematic diagrams of a preferred embodiment of the present utility model;

[0021] Figure 2 This is a front view of a preferred embodiment of the present invention;

[0022] Figure 3 This is a preferred embodiment of the present utility model. Figure 2 Sectional view at point AA;

[0023] Figure 4 This is a preferred embodiment of the present utility model. Figure 3 A magnified view of a section at point B in the middle;

[0024] Figure 5 This is a second three-dimensional structural schematic diagram of a preferred embodiment of the present utility model.

[0025] In the diagram: 1. Chassis; 2. Engine; 3. Intake assembly; 31. Air filter box; 311. Filter chamber; 3111. Slide groove; 312. Air collection chamber; 32. Intake pipe; 33. Air inlet; 34. Air inlet nozzle; 35. Mounting door; 4. Air filter device; 41. Slide bar; 5. Intake device; 51. Motor; 52. Turbine; 6. Y-shaped pipe; 7. Water outlet. Detailed Implementation

[0026] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0027] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

[0028] This embodiment mainly describes an off-road motorcycle with a high-efficiency air intake structure, as detailed below:

[0029] like Figures 1 to 5 As shown, this is an off-road motorcycle with a high-efficiency air intake structure. An engine 2 is installed inside the frame 1, and an air intake assembly 3 is mounted on the frame 1 to supply air to the engine 2. The air intake assembly 3 includes an air filter box 31 and an intake pipe 32. The air filter box 31 is internally divided into a filter chamber 311 and an air collection chamber 312, arranged left and right, with their tops connected. Several layers of air filters 4 are installed in the filter chamber 311 from bottom to top. An air inlet 33 is located on the windward side of the air filter box 31, and this inlet 33 is connected to the lower side of the filter chamber 311. One end of the intake pipe 32 is connected to the air collection chamber 312, and the other end is connected to the throttle body. An air intake device 5 connected to the engine 2 battery is mounted on the top of the filter chamber 311. When engine 2 is running, the air outside air filter box 31 enters filter chamber 311 through intake port 33 under the action of intake device 5, passes through air filter device 4, enters air collection chamber 312 from the top of filter chamber 311, and then flows into throttle body through intake pipe 32. In this design, air filter device 4 is arranged vertically in multiple layers, so that air flows from bottom to top, extending the filtration path, improving dust interception efficiency, and ensuring that the air entering engine 2 is clean. At the same time, during the upward movement of air, some moisture carried in the air can adhere to air filter device 4, thereby obtaining drier air and improving the performance and service life of engine 2. The setting of intake device 5 enhances intake pressure and solves the problem of insufficient intake of traditional naturally aspirated engines in off-road bumpy environments. Dividing air filter box 31 into filter chamber 311 and air collection chamber 312 separates filtration and air collection, preventing unfiltered air from directly entering engine 2.

[0030] like Figure 5 As shown, there are two intake assemblies 3, symmetrically installed on both sides of the vehicle frame 1. The intake pipes 32 of the two intake assemblies 3 share a common connection to a Y-shaped pipe 6 near the engine 2. The ends of the two intake pipes 32 are sealed to the two openings of the Y-shaped pipe 6, and the third opening of the Y-shaped pipe 6 is connected to the throttle body of the engine 2. This symmetrical arrangement of the intake assemblies 3 allows air to enter the engine 2 simultaneously from both sides, increasing the intake volume while balancing the left and right intake volumes, thus improving the combustion uniformity and intake efficiency of the engine 2. Simultaneously, the design of the Y-shaped pipe 6 effectively gathers the air from the intake pipes 32 on both sides and delivers it to the throttle body, ensuring the uniformity and stability of the intake, allowing the engine 2 to maintain good performance under different operating conditions.

[0031] like Figure 1 and Figure 5 As shown, a horizontally positioned air intake nozzle 34 with a conical opening is installed at the air intake 33. Air enters the filter chamber 311 through the conical opening of the air intake nozzle 34. The conical opening design increases the air intake area, allowing air to enter the filter chamber 311 more smoothly, reducing intake resistance and improving intake efficiency. Simultaneously, the conical opening also guides the incoming air, ensuring more even distribution within the filter chamber 311, further enhancing air filtration. During heavy rain, rainwater reaching the conical opening will flow downwards along the lower side of the opening wall, preventing large amounts of rainwater from entering the filter chamber 311. The conical opening design also prevents large debris (such as leaves) from entering the filter chamber 311.

[0032] like Figure 4 As shown, the bottom of the filter chamber 311 is designed as an inclined slope, with a water outlet 7 at the lowest point of the slope. This structural design allows water in the filter chamber 311 to flow along the inclined slope to the water outlet 7 and be discharged under the influence of gravity, preventing water accumulation in the filter chamber 311 and thus avoiding the impact of water on the air filter device 4, ensuring the filtration effect and service life of the air filter device 4. At the same time, the design of the water outlet 7 also facilitates the cleaning and maintenance of the filter chamber 311, improving the reliability and stability of the entire air intake assembly 3. Preferably, in this solution, to prevent external mud and water from seeping back and to enable the motorcycle to adapt to off-road wading scenarios, a one-way valve is installed inside the water outlet 7.

[0033] Specifically, the air filter device 4 has sliding strips 41 fixedly installed on both sides, and sliding grooves 3111 are provided on both side walls of the filter chamber 311. The air filter device 4 is slidably connected within the filter chamber 311 through the cooperation of the sliding strips 41 and the sliding grooves 3111. This sliding connection structure makes the installation and replacement of the air filter device 4 more convenient and quick, improving maintenance efficiency. At the same time, the cooperation between the sliding strips 41 and the sliding grooves 3111 not only enables tool-less replacement of the filter element, but also ensures the stability and sealing of the air filter device 4 within the filter chamber 311, ensuring that air can pass smoothly through the air filter device 4 for filtration, thus improving the air filtration effect and reliability.

[0034] like Figure 1 and Figure 5 As shown, an installation door 35 is hinged to the air filter box 31 at the corresponding position of the filter chamber 311. The installation door 35 is used to facilitate the installation or replacement of the air filter device 4. The design of the installation door 35 allows maintenance personnel to easily open the installation door 35 to install, replace, or clean the air filter device 4, greatly improving the convenience and efficiency of maintenance. At the same time, the installation door 35 also protects the air filter device 4, preventing dust and debris from entering the filter chamber 311 and ensuring the normal operation of the air intake assembly 3. When replacing the filter element, simply open the installation door 35, pull out the old filter element along the slide groove 3111, and push in the new filter element, greatly improving maintenance efficiency.

[0035] Specifically, waterproof sealing rings are provided on the four side walls of the mounting door 35. These waterproof sealing rings effectively prevent moisture from entering the filter chamber 311 through the gap between the mounting door 35 and the air filter box 31, further improving the waterproof performance and reliability of the air intake assembly 3. At the same time, the waterproof sealing rings also provide a certain degree of sealing, preventing air leakage from gaps and ensuring the efficiency and stability of air intake.

[0036] Specifically, the air filtration device 4 consists of multiple filter elements. This multi-layer filter structure enables multi-stage filtration of air, effectively intercepting and adsorbing various impurities in the air, thus improving air cleanliness. Simultaneously, the corresponding design of the sliding strips 41 and sliding grooves 3111 of each filter element ensures the stability and sealing of each filter element within the filter chamber 311, ensuring that air can smoothly pass through each filter element for filtration, thereby improving the air filtration effect and reliability. The outer layer of the multi-layer filter element uses a stainless steel mesh to intercept large particulate impurities in the air, such as sand and dust, effectively preventing large particulate impurities from entering the engine 2 and protecting the normal operation of the engine 2. The filter element uses an oil-based sponge filter element to adsorb fine dust in the air, further improving air cleanliness. At the same time, a hydrophobic coating is applied to the outer surface of the oil-based sponge filter element, effectively preventing moisture adsorption on the filter element, avoiding the filter element's filtration effect and service life due to water absorption, and improving the filter element's performance and reliability.

[0037] Specifically, the air intake device 5 includes a motor 51 and a turbine 52. The motor 51 is fixed to the top wall of the filter chamber 311 and powered by the engine battery. The turbine 52 is connected to the output end of the motor 51. When the engine 2 is running, the motor 51 drives the turbine 52 to rotate, generating negative pressure and drawing in air.

[0038] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do 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, they should not be construed as limitations on this utility model.

[0039] The above provides a detailed description of the off-road motorcycle with a high-efficiency air intake structure provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand this utility model and its core ideas. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. An off-road motorcycle with a high-efficiency air intake structure, comprising a frame, an engine housed within the frame, and an air intake assembly for inputting air to the engine, characterized in that: The air intake assembly includes an air filter box and an intake pipe. The air filter box has a filter chamber and an air collection chamber arranged on the left and right sides. The top of the filter chamber and the air collection chamber are connected. The filter chamber has several layers of air filtration devices arranged from bottom to top. The windward side of the air filter box has an air inlet that communicates with the lower side of the filter chamber. One end of the intake pipe is connected to the air collection chamber, and the other end is connected to the throttle body. The top of the filter chamber is equipped with an air intake device that is connected to the engine battery. When the engine is running, the air outside the air filter box enters the filter chamber through the air inlet under the action of the air intake device, passes through the air filtration devices, enters the air collection chamber from the top of the filter chamber, and then flows into the throttle body through the intake pipe.

2. The off-road motorcycle with a high-efficiency air intake structure according to claim 1, characterized in that: The intake assembly has two parts, which are symmetrically arranged on both sides of the vehicle frame. The intake pipes of the two intake assemblies are connected to a Y-shaped pipe at the end near the engine. The ends of the two intake pipes are respectively sealed to the two openings of the Y-shaped pipe. The third opening of the Y-shaped pipe is connected to the engine throttle body.

3. The off-road motorcycle with a high-efficiency air intake structure according to claim 1, characterized in that: The air inlet is provided with a horizontally arranged air inlet nozzle, which has a conical opening, and the air enters the filter chamber from the conical opening of the air inlet nozzle.

4. The off-road motorcycle with a high-efficiency air intake structure according to claim 1, characterized in that: The bottom of the filter chamber is an inclined surface, and a water outlet is provided at the lowest point of the inclined surface.

5. The off-road motorcycle with a high-efficiency air intake structure according to claim 1, characterized in that: The air filter is fixedly provided with sliding strips on both sides, and sliding grooves are provided on both sides of the filter chamber. The air filter is slidably connected in the filter chamber by the sliding strips and sliding grooves.

6. The off-road motorcycle with a high-efficiency air intake structure according to claim 5, characterized in that: The air filter box is hinged to the filter chamber at the corresponding location with an installation door, which is used to facilitate the installation or replacement of the air filter device.

7. The off-road motorcycle with a high-efficiency air intake structure according to claim 6, characterized in that: The installation door is equipped with waterproof sealing rings on its four side walls.

8. The off-road motorcycle with a high-efficiency air intake structure according to claim 5, characterized in that: The air filtration device consists of multiple filter elements. The outer layer of the multiple filter elements is provided with a stainless steel mesh to intercept large particles in the air. The filter element is an oily sponge filter element that adsorbs fine dust. The outer surface of the oily sponge filter element is coated with a hydrophobic coating.

9. The off-road motorcycle with a high-efficiency air intake structure according to claim 1, characterized in that: The air intake device includes a motor and a turbine. The motor is fixed to the top wall of the filter chamber and powered by the engine battery. The turbine is connected to the output end of the motor.

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