Double-channel air inlet structure and motorcycle with same

Abstract

The utility model belongs to the technical field of motorcycles, and provides a double-channel air inlet structure and a motorcycle thereof, the air inlet structure comprises a first air filtering cavity and a second air filtering cavity, the first air filtering cavity is provided with a first air inlet and a first air outlet, and the second air filtering cavity is provided with a second air inlet and a second air outlet. The first air filtering cavity and the second air filtering cavity are connected through a second air outlet pipeline; a first channel is formed in the first air filtering cavity between the first air inlet and the first air outlet, and air in the first air filtering cavity flows out of the first air outlet through the first channel; a second channel is formed between the second air inlet and the first air outlet through the second air outlet in the air inlet structure, and air in the second air filtering cavity flows out of the first air outlet through the second channel; the channel length of the first channel is smaller than that of the second channel. According to the utility model, on the basis of reducing the air inlet noise, the air inlet amount can be timely compensated, so that the performance of an engine can be favorably exerted.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of motorcycle technology, in particular to a double-channel air intake structure and a motorcycle thereof. BACKGROUND

[0002] The air intake system of a motorcycle includes an air cleaner, an intake manifold and an air intake valve mechanism. After the air is filtered by the air cleaner, the air flows through the carburetor to mix with gasoline, enters the intake manifold through the air intake, and enters the cylinder through the air intake valve to ignite and burn, generating power (four-stroke carburetor engine).

[0003] For a motorcycle engine with constant displacement, if the power is to be increased, as much mixed gas as possible must be sucked in the limited space. The amount of air obtained per cycle and the compression ratio during engine operation are the basic factors that determine the size of the engine power. Based on this, motorcycle manufacturers continue to improve the air intake system, such as replacing high-flow air filter cartridges and large-diameter carburetors, replacing exposed filters, and changing the shape of the air intake. However, when making major air intake system modifications, the noise generated by the air intake must be considered.

[0004] In view of the above problems, US patent US9440504B2 discloses a two-wheeled vehicle including a plurality of ground-engaging members for supporting a frame assembly and an air intake assembly coupled to a head portion of the frame assembly. The air intake assembly includes a filter, and a first portion of air received into the air intake assembly is directed from the filter of the air intake assembly into the head portion of the front frame portion. In addition, the two-wheeled vehicle includes a throttle body connected to the air intake assembly, and a second portion of air received into the air intake assembly flows directly from the filter into the throttle body. In this two-wheeled vehicle, the air intake enters from the filter, forms a resonant cavity in the accumulator space, and plays a role in reducing air intake noise and buffering and stabilizing the air intake through the resonant cavity. However, the resonant cavity of the air intake assembly has limited capacity, which may not effectively regulate the air intake pressure wave, resulting in a decrease in air intake efficiency, which will affect the engine charge, and in turn affect the output power and torque of the engine. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies in the prior art, the present utility model provides a double-channel air intake structure and a motorcycle thereof, which can compensate for the air intake amount in a timely manner on the basis of reducing air intake noise to facilitate the performance of the engine.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0007] The utility model discloses a first aspect provides a kind of double-channel air intake structure, including first filter cavity and second filter cavity, first filter cavity is provided with first air inlet and first air outlet, second filter cavity is provided with second air inlet and second air outlet, and first filter cavity and second filter cavity are connected by second air outlet pipeline;

[0008] First air inlet and first air outlet form first channel in first filter cavity, and air in first filter cavity flows out from first air outlet through first channel;

[0009] Second air inlet and first air outlet form second channel in air intake structure through second air outlet, and air in second filter cavity flows out from first air outlet through second channel;

[0010] The channel length of first channel is less than the channel length of second channel.

[0011] According to the above technical means, the air intake structure of the application has two air intake paths under the action of first channel and second channel;And the application limits the channel length of first channel to be less than the channel length of second channel, at this time, the airflow in first channel is fast, and the pressure is large, so that first channel preferentially completes air intake and serves as the main air intake of air intake structure, to provide sufficient air to maintain the smooth operation of engine when the speed of motorcycle engine is low, while avoiding too much air entering to cause the mixture to be too dilute.

[0012] When the motorcycle accelerates, the speed of engine rapidly increases, and the required air intake amount increases significantly, at this time, the air intake structure needs to respond quickly to provide sufficient air to support complete combustion of fuel, so as to generate greater power output. Under this working condition, the application uses second channel as auxiliary air intake to compensate for sudden air intake requirements in time to meet the jump use working condition such as sudden acceleration.

[0013] Secondly, the airflow of the two paths will not have airflow collision in first filter cavity due to the influence of pressure and vacuum degree in first channel and second channel, and the small airflow pressure in second channel allows the airflow in first channel to pass through first air outlet preferentially.

[0014] In addition, the application disperses air flow by using first channel and second channel to reduce the air flow rate in each channel, thereby reducing the noise caused by high-speed airflow;And double air intake channels can reduce the total air intake resistance in air intake structure, so that air is more easily introduced into engine, thereby reducing the noise caused by air intake resistance.

[0015] Further, the air intake directions of first air inlet and second air inlet are different.

[0016] According to the above technical means, the application takes in air in different directions, on the one hand cooperates with the length of the adjusting channel, and on the other hand meets the air intake demand of the motorcycle engine under different use conditions and is suitable for different types of motorcycles.

[0017] Further, the throttle valve connected with the first air outlet pipeline is further included.

[0018] Further, the air filter installed at the first air inlet is further included.

[0019] Further, the filter element installed in the second filter cavity at the second air outlet is further included.

[0020] The utility model discloses a second aspect provides a kind of motorcycle, including above-mentioned double-channel air intake structure.

[0021] The utility model has the beneficial technical effects that:

[0022] The double-channel air intake structure of the utility model takes the first channel as main air inlet for leading motorcycle relatively stable working condition under the air intake, takes the second channel as auxiliary air inlet for timely compensating sudden air intake demand, to meet the jumping use condition such as urgent acceleration;This double-channel air intake structure not only can effectively reduce air intake noise, but also can compensate air intake timely, is favorable to the performance of engine. BRIEF DESCRIPTION OF DRAWINGS

[0023] The drawings incorporated into the specification and forming a part thereof show, in accordance with the embodiments of the present application, and together with the specification, serve to explain the principle of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor. In the drawings:

[0024] Figure 1 The structure diagram of the double-channel air intake structure shown in an embodiment of the present application is shown in the drawings;

[0025] Figure 2 The internal structure diagram of the double-channel air intake structure shown in an embodiment of the present application is shown in the drawings;

[0026] Figure 3 The Figure 2 The first channel airflow movement direction diagram of the double-channel air intake structure is shown in the drawings;

[0027] Figure 4 The Figure 2 The second channel airflow movement direction diagram of the double-channel air intake structure is shown in the drawings.

[0028] REFERENCE NUMERALS

[0029] 1: first filter chamber; 2: second filter chamber; 3: empty filter; 4: filter core; 5: second air inlet; 6: first air outlet. DETAILED DESCRIPTION

[0030] Unless otherwise defined, all technical and / or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application pertains. It is to be understood that certain features that are, for clarity, described in the context of separate embodiments can also be provided in combination in a single embodiment. Conversely, various features that are, for brevity, described in the context of a single embodiment can also be provided separately or in any suitable combination. The use of numbering in the claims is intended to supplement, not supersede, a classification that is determined according to the patent classification art and may, in some embodiments, not be used in the claims. Certain features that are, for brevity, described in the context of several embodiments are also applicable to other embodiments. The following further describes the present application by way of specific examples, but it is to be understood that the specific process conditions and results described in these examples are for illustrative purposes only and are not intended to limit the scope of the present application. Any equivalent variation or modification of the examples according to the spirit and principle of the present application should be covered within the scope of the present application.

[0031] As shown in Figure 1 and Figure 2 The present application provides a double-channel air inlet structure, comprising a first filter chamber 1 and a second filter chamber 2, the first filter chamber 1 is provided with a first air inlet and a first air outlet 6, the second filter chamber 2 is provided with a second air inlet 5 and a second air outlet, the first filter chamber 1 and the second filter chamber 2 are connected through the second air outlet pipeline;

[0032] The first air inlet and the first air outlet 6 form a first channel in the first filter chamber 1, and the air in the first filter chamber 1 flows out from the first air outlet 6 through the first channel;

[0033] The second air inlet 5 and the first air outlet 6 form a second channel in the air inlet structure through the second air outlet, and the air in the second filter chamber 2 flows out from the first air outlet 6 through the second channel;

[0034] The channel length of the first channel is less than the channel length of the second channel.

[0035] In an embodiment of the present application, the specific form of the first filter chamber 1 and the second filter chamber 2 is not limited, which can be as shown in Figure 1 and 2The shape shown can also be any space structure capable of accommodating gas and allowing gas flow. Furthermore, the volume of the first filter cavity 1 and the second filter cavity 2 is not limited in the present application, and is matched and designed according to the motorcycle structure and the required performance of the engine according to the actual application of the double-channel air intake structure, for example, the volume of the first filter cavity 1 is greater than that of the second filter cavity 2.

[0036] In an embodiment of the present application, an opening is provided on the second filter cavity 2, and the opening is used as the second air inlet 5. The opening area of the second air inlet 5 is designed according to the actual performance requirements of the engine, for example, the second air inlet 5 is provided at the front of the second filter cavity 2, and the area of the second air inlet 5 is 1 / 4, 1 / 6, 1 / 8, etc. of the opening base surface. The first air inlet and the first air outlet 6 are also directly provided on the first filter cavity 1, and the overall structure of the first filter cavity 1 and the second filter cavity 2 is simple, facilitating manufacturing.

[0037] In an embodiment of the present application, the first filter cavity 1 and the second filter cavity 2 are connected by the second air outlet pipeline. To ensure the overall sealing of the air intake structure, a sealing element can be further wrapped around the pipeline connection between the first filter cavity 1 and the second filter cavity 2. The sealing element includes but is not limited to a rubber sealing element, a sealing paste, and a silicone sealing ring.

[0038] In an embodiment of the present application, the air intake structure of the present application has two air intake paths under the action of the first channel and the second channel, as shown in Figure 3 and Figure 4 The present application limits the channel length of the first channel to be less than that of the second channel. At this time, the airflow in the first channel flows fast and has high pressure, thereby making the first channel preferentially complete air intake and serve as the main air intake path of the air intake structure, which is used to provide sufficient air to maintain the stable operation of the engine when the engine speed of the motorcycle is low, while avoiding too much air entering to cause the mixture to be too lean.

[0039] When the motorcycle accelerates, the engine speed increases rapidly, and the required air intake amount increases significantly. At this time, the air intake structure needs to respond quickly to provide sufficient air to support complete combustion of fuel, thereby generating greater power output. Under this working condition, the present application uses the second channel as an auxiliary air intake path to timely compensate for the sudden air intake requirement to meet the jump use working condition such as sudden acceleration.

[0040] Secondly, the airflow in the first channel and the second channel is affected by the pressure and vacuum degree in the channel, and the airflow in the two paths will not collide in the first filter cavity 1. The small airflow pressure in the second channel allows the airflow in the first channel to preferentially pass through the first air outlet 6.

[0041] In addition, the first channel and the second channel are used to disperse the air flow, so as to reduce the air flow rate in each channel, thereby reducing the noise caused by high-speed airflow; and the double air inlet channels can reduce the total air inlet resistance in the air inlet structure, so that the air is more easily introduced into the engine, thereby reducing the noise caused by air inlet resistance.

[0042] In an embodiment of the present application, the air inlet directions of the first air inlet and the second air inlet 5 are different. The present application uses different directions of air inlet to adjust the path length of the channel on the one hand, and to meet the air inlet requirements of the motorcycle engine under different use conditions on the other hand, and to adapt to different types of motorcycles. For example, the first air inlet of the present application can introduce air from the top of the air inlet structure, with high space utilization, which can meet the requirements of the motorcycle under normal conditions at low speed; the second air inlet 5 can introduce air from the front (engine head position) of the air inlet structure, which can provide sufficient air supply and improve the power output of the engine when the motorcycle is running at high speed.

[0043] In an embodiment of the present application, the double-channel air inlet structure further comprises a throttle valve (not shown in the figure) connected to the first air outlet 6. The throttle valve of the present application is a commercially available product, which is a Y-shaped structure including an air inlet adjusting port and two air outlets; the throttle valve includes an oil injector, temperature, pressure, position sensors, and an idle step motor. The throttle valve of the present application is fixedly installed at the first air outlet 6 through the air inlet adjusting port, and the installation methods include but are not limited to threaded connection and fastener connection. The present application uses the throttle valve to automatically control the amount of air entering the engine from the air inlet structure, thereby avoiding the case that the engine has too much air intake.

[0044] In an embodiment of the present application, the double-channel air inlet structure further comprises an air filter 3 installed at the first air inlet. The air filter 3 of the present application is a commercially available product, which is used to filter the air entering the first air filter cavity 1, so that the air entering the engine is clean air. The product model of the air filter 3 of the present application is not limited, and can be reasonably selected according to actual use requirements.

[0045] In an embodiment of the present application, the double-channel air inlet structure further comprises a filter element 4 installed in the second air filter cavity 2 at the second air outlet. The filter element 4 of the present application is installed inside the second air filter cavity 2, which is used to filter the air of the second air inlet. The filter element 4 of the present application is a commercially available product, and its product model is not limited, which can be an existing "mushroom head" filter element 4, etc.

[0046] In an embodiment of the present application, the double-channel air inlet structure of the present application is used to deliver clean, dry, sufficient and stable air to the engine. When the engine is running, the working principle of the double-channel air inlet structure is as follows:

[0047] The pressure sensor in the throttle valve detects the change of the absolute pressure behind the throttle valve according to the engine speed and the load, and controls the basic fuel injection amount and the air intake amount of the throttle valve through the electronic controller;

[0048] The first air inlet and the second air inlet 5 of the double-channel air intake structure synchronously intake air, when the engine speed is low, the air in the first channel preferentially enters the throttle valve due to the short path, fast flow rate and high pressure of the first channel, as shown in the figure, the air entering the first air inlet enters the first filter cavity 1 after being filtered by the air filter 3, and then flows in the first filter cavity 1 and enters the throttle valve from the first air outlet 6, at this time, the first channel is the main air intake channel, and the air intake amount can meet the engine working condition requirements; Figure 3

[0049] When the engine speed is high, the air intake amount of the first channel is insufficient, and the pressure in the first filter cavity 1 is reduced, as shown in the figure, at this time, the air entering the second filter cavity 2 from the second air inlet 5 enters the throttle valve together with the air of the first air inlet after mixing in the first filter cavity 1 through the second channel, so as to provide sufficient air intake amount for the engine. Figure 4

[0050] The utility model also provides a kind of motorcycle, the motorcycle is installed with above-mentioned double-channel air intake structure.

[0051] The above embodiment is only illustrative of the principle and effect of the utility model, and is not used to limit the utility model. Any person skilled in the art can modify or change the above embodiment without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.​​

Claims

1. A dual passage air intake structure, characterized by, The air filter structure comprises a first air filtering cavity (1) and a second air filtering cavity (2), the first air filtering cavity (1) is provided with a first air inlet and a first air outlet (6), the second air filtering cavity (2) is provided with a second air inlet (5) and a second air outlet, and the first air filtering cavity (1) and the second air filtering cavity (2) are connected through the second air outlet pipeline; A first channel is formed between the first air inlet and the first air outlet (6) in the first air filtering cavity (1), and air in the first air filtering cavity (1) flows out from the first air outlet (6) through the first channel; A second channel is formed between the second air inlet (5) and the first air outlet (6) in the air inlet structure through the second air outlet, and air in the second air filtering cavity (2) flows out from the first air outlet (6) through the second channel; The channel length of the first channel is smaller than that of the second channel.

2. The dual passage intake structure of claim 1, wherein, The air inlet directions of the first air inlet and the second air inlet (5) are different.

3. The dual passage intake structure of claim 1 or 2, wherein, The air filter structure further comprises a throttle valve connected to the first air outlet (6) through a pipeline.

4. The dual passage intake structure of claim 1 or 2, wherein, The air filter structure further comprises an air filter (3) installed at the first air inlet.

5. The dual passage air intake structure of claim 3, wherein The air filter structure further comprises an air filter (3) installed at the first air inlet.

6. The dual passage intake structure of claim 1, 2, or 5, wherein, The air filter structure further comprises a filter element (4) installed in the second air filtering cavity (2) at the second air outlet.

7. The dual passage air intake structure of claim 3, wherein The air filter structure further comprises a filter element (4) installed in the second air filtering cavity (2) at the second air outlet.

8. The dual passage air intake structure of claim 4, wherein The air filter structure further comprises a filter element (4) installed in the second air filtering cavity (2) at the second air outlet.

9. A motorcycle characterized in that The air filter structure further comprises a filter element (4) installed in the second air filtering cavity (2) at the second air outlet. The air filter structure further comprises a filter element (4) installed in the second air filtering cavity (2) at the second air outlet. The air filter structure further comprises a filter element (4) installed in the second air filtering cavity (2) at the second air outlet. The air filter structure further comprises a filter element (4) installed in the second air filtering cavity (2) at the second air outlet. The air filter structure further comprises a filter element (4) installed in the second air filtering cavity (2) at the second air outlet. The air filter structure further comprises a filter element (4) installed in the second air filtering cavity (2) at the second air outlet. The air filter structure further comprises a filter element (4) installed in the second air filtering cavity (2) at the second air outlet. The air filter structure further comprises a filter element (4) installed in the second air filtering cavity (2) at the second air outlet. The air filter structure further comprises a filter element (4) installed in the second air filtering cavity (2) at the second air outlet. The air filter structure further comprises a filter element (4) installed in the second air filtering cavity (2) at the second air outlet. The air filter structure further comprises a filter element (4) installed in the second air filtering cavity (2) at the second air outlet. The air filter structure further comprises a filter element (4) installed in the second air filtering cavity (2) at the second air outlet. The air filter structure further comprises a filter element (4) installed in the second air filtering cavity (2) at the second air outlet. The air filter structure further comprises a filter element (4) installed in the second air filtering cavity (2) at the second air outlet. The air filter structure further comprises a filter element (4) installed in the second air filtering cavity (2) at the second air outlet. The air filter structure further comprises a filter element (4

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