Air cleaner with variable intake function and motorcycle

Abstract

The utility model discloses a kind of air filter with variable air intake function and motorcycle, including air filter shell, driving mechanism, fixed air inlet pipe and variable air inlet pipe, variable air inlet pipe cavity is formed after filter core in air filter shell, fixed air inlet pipe is communicated variable air inlet pipe cavity with engine, variable air inlet pipe is located in variable air inlet pipe cavity;Driving mechanism includes slide axle and slide base, and slide axle single degree of freedom reciprocating sliding is supported in variable air inlet pipe cavity by slide base;Slide axle is connected with variable air inlet pipe, and variable air inlet pipe is communicated or separated by driving mechanism and is driven to engage with fixed air inlet pipe;Variable air inlet pipe is directly driven by slide axle, can reduce structural complexity, the connection strength of variable air inlet pipe is promoted in slide axle, under the condition that variable air inlet pipe high frequency shifts, can improve the use durability of variable air inlet pipe, guarantee transmission accuracy, and then guarantee the combination reliability of variable air inlet pipe and fixed air inlet pipe interface position, reduce the air leakage risk of interface.

Description

Technical Field

[0001] This utility model relates to the fields of engine intake systems and motorcycles, specifically to an air filter with variable intake function and a motorcycle. Background Technology

[0002] Traditional internal combustion engines have a fixed intake manifold length. This fixed length results in poor matching between high and low speed ranges, forcing a choice of balance between high and low speed conditions. Variable intake manifold length technology allows for optimal intake manifold length in both high and low speed ranges, thereby improving high-speed power and low-speed torque, effectively reducing fuel consumption and improving emissions.

[0003] However, due to the limitations of the air filter structure in traditional fuel engines, the installation structure of the variable intake manifold is restricted. When the variable intake manifold is moved by the transmission mechanism, the effective usable length of the variable intake manifold is limited. Furthermore, due to the high frequency of movement of the variable intake manifold, its durability is reduced and the transmission accuracy is decreased, which affects the reliability of the connection between the variable intake manifold and the fixed intake manifold interface, resulting in the risk of air leakage at the interface.

[0004] Therefore, to solve the above problems, an air filter and motorcycle with variable intake function are needed, which can optimize the variable intake structure of the air filter, improve the service durability of the variable intake pipe, and improve the reliability of the connection between the variable intake pipe and the fixed intake pipe interface position. Utility Model Content

[0005] In view of this, the purpose of this utility model is to overcome the defects in the prior art and provide an air filter and motorcycle with variable intake function, which can optimize the variable intake structure of the air filter, improve the service durability of the variable intake pipe, and improve the reliability of the connection between the variable intake pipe and the fixed intake pipe interface position.

[0006] The present invention discloses an air filter with variable intake function, comprising an air filter housing, a drive mechanism, a fixed intake pipe and a variable intake pipe, wherein the variable intake cavity is formed inside the air filter housing after the filter element, the fixed intake pipe is used to connect the variable intake cavity and the engine, and the variable intake pipe is located inside the variable intake cavity.

[0007] The drive mechanism includes a sliding shaft and a sliding base. The sliding shaft reciprocates with a single degree of freedom and is supported by the sliding base in the variable intake pipe cavity. The sliding shaft is connected to the variable intake pipe so that the variable intake pipe can be driven by the drive mechanism to engage with or disconnect from the fixed intake pipe.

[0008] Furthermore, the slide blocks supported by the slide shaft are a plurality of those distributed along the length of the slide shaft.

[0009] Furthermore, the sliding shaft is provided with a guide block, and the base is provided with a guide groove that cooperates with the guide block.

[0010] Furthermore, the slide shaft is subjected to a preload force away from the air inlet of the fixed pipe.

[0011] Furthermore, a limiting member is fixedly provided on the slide shaft between two adjacent slide blocks to prevent the slide shaft from falling out, and the preload is applied by a spring disposed between the limiting member and the corresponding slide block;

[0012] An elastic buffer is provided between the limiting member and the adjacent slide.

[0013] Furthermore, the drive mechanism also includes a base and a power source disposed in the variable intake manifold, the slide is formed on the base, and the power source drives the slide shaft to reciprocate on the slide with a single degree of freedom.

[0014] Furthermore, the fixed air intake pipe has a fixed air inlet, which is located inside the air filter housing and close to the inner surface of the air filter housing.

[0015] Furthermore, one end of the fixed air intake pipe with a fixed air intake port is connected to a fixed air intake pipe flange I and a fixed air intake pipe flange II. The fixed air intake pipe is fixed to the air filter housing by clamping through the fixed air intake pipe flange I and the fixed air intake pipe flange II, so that the fixed air intake port is located inside the air filter housing and close to the inner surface of the air filter housing.

[0016] Furthermore, the fixed intake pipe flange I is located in the variable intake pipe cavity, and the thickness of the fixed intake pipe flange I is greater than the thickness of the fixed intake pipe flange II.

[0017] Furthermore, the outlet of the variable intake pipe has a variable intake pipe flange, and the fixed intake pipe flange I and the variable intake pipe flange are close to each other; the variable intake pipe flange has a cone-shaped outward convex positioning part, and the fixed intake pipe flange I has a cone-shaped inward concave guiding part.

[0018] When the variable intake pipe is connected to the fixed intake pipe, the positioning part and the guiding part are adapted to seal the interface between the variable intake pipe and the fixed intake pipe.

[0019] This solution also discloses a motorcycle that uses the aforementioned air filter with variable intake function.

[0020] The beneficial effects of this utility model are as follows: The air filter and motorcycle with variable intake function disclosed in this utility model have a direct connection structure driven by a sliding shaft, which can reduce the complexity of the drive structure and improve the space utilization rate. At the same time, it can also improve the connection strength of the variable intake pipe on the sliding shaft. Under the condition of high frequency displacement of the variable intake pipe, it can improve the service durability of the variable intake pipe, ensure the transmission accuracy, and thus ensure the reliability of the connection between the variable intake pipe and the fixed intake pipe interface position, and reduce the risk of air leakage at the interface. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0022] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0024] Figure 3 This utility model Figure 2 A schematic diagram of the AA-direction structure;

[0025] Figure 4 This utility model Figure 3 A schematic diagram of the structure at point A;

[0026] Figure 5 This is a schematic diagram of the installation structure of the variable intake pipe of this utility model. Figure 1 ;

[0027] Figure 6 This utility model Figure 5 BB structure diagram;

[0028] Figure 7 This is a schematic diagram of the installation structure of the variable intake pipe of this utility model. Figure 2 ;

[0029] Figure 8 This utility model Figure 7 A schematic diagram of the structure of CC.

[0030] Reference numerals: Variable intake manifold 001, air filter housing 1, fixed intake manifold 2, variable intake manifold 3, power source 4, connector 5, base 6, slide 7, guide hole 71, slide shaft 8, limiting component 9, spring 10, elastic buffer component 11, guide block 12, guide groove 13, variable intake manifold flange 14, fixed intake manifold flange I 15, fixed intake manifold flange II 16, positioning part 17, guide part 18. Detailed Implementation

[0031] Figure 1 As shown in the figure, the air filter with variable intake function in this embodiment includes an air filter housing 1, a drive mechanism, a fixed intake pipe 2, and a variable intake pipe 3. The variable intake cavity 001 is formed inside the air filter housing 1 after the filter element. The fixed intake pipe 2 is used to connect the variable intake cavity 001 to the engine. The variable intake pipe 3 is located inside the variable intake cavity 001. The drive mechanism includes a sliding shaft 8 and a sliding seat 7. The sliding shaft 8 reciprocates with a single degree of freedom and is supported by the sliding seat 7 in the variable intake cavity 001. The sliding shaft 8 is connected to the variable intake pipe 3 so that the variable intake pipe 3 is driven by the drive mechanism to engage and connect with the fixed intake pipe 2 or disconnect it. By using the slide block 7 to slide and support the slide shaft 8, the displacement stability of the variable intake pipe 3 is enhanced, ensuring the effectiveness of the connection between the fixed intake pipe 2 and the variable intake pipe 3, improving docking accuracy, and reducing the risk of air leakage at the interface. The variable intake pipe 3 is directly driven by the slide shaft, and the two are a direct connection structure without a transmission mechanism. This reduces structural complexity, improves space utilization, and also enhances the connection strength of the variable intake pipe 3 on the slide shaft. Under the condition of high-frequency displacement of the variable intake pipe 3, it can improve the service durability of the variable intake pipe 3, ensure transmission accuracy, and thus ensure the reliability of the connection between the variable intake pipe 3 and the fixed intake pipe 2 interface, reducing the risk of air leakage at the interface.

[0032] In this embodiment, the slide blocks 7 supporting the slide shaft 8 are distributed in several units along the length of the slide shaft, and the slide shaft 8 reciprocates with a single degree of freedom, supported by several slide blocks 7. In particular, in this solution, the slide blocks 7 are several units supporting the slide shaft 8, which further improves the support stability of the slide shaft 8 in the narrow space of the variable intake cavity 001, ensuring the stable and reliable displacement of the slide shaft 8.

[0033] In this embodiment, the slide block 7 is also used to guide and limit the sliding shaft 8. The slide block 7 is provided with a guide hole 71 for guiding the sliding shaft 8. The sliding shaft 8 passes through the guide hole 71 and is disposed on the slide block 7, so that the slide block 7 not only has the function of guiding the sliding shaft 8, but also has the function of limiting the sliding shaft 8, which can prevent the sliding shaft 8 from detaching from the slide block 7 in the radial direction during use.

[0034] In this embodiment, the driving mechanism includes a base 6 and a power source 4 disposed in the variable intake cavity 001. Several sliding blocks distributed along the length of the sliding shaft are formed on the base. In this design, the power source 4 is fixedly mounted on the base, preferably using a bolt-fixed detachable method. After the two are integrated, the base 6 is detachably mounted within the variable intake cavity 001 for easy structural installation. The detachable method is bolt connection. Of course, the base 6 can also be directly formed in the variable intake cavity 001 or disposed in a non-detachable manner, which will not be elaborated further here. The sliding shaft is fixedly connected to the variable intake pipe 3. The power source 4 drives the sliding shaft to reciprocate with a single degree of freedom, thereby connecting or disconnecting the variable intake pipe 3 from the fixed intake pipe 2. This design has the advantage of simple structure and reduces the difficulty of structural layout within the limited space of the variable intake cavity 001.

[0035] In this embodiment, the power source is a linear actuator, and the mover of the linear actuator is drivenly connected to the sliding shaft 8. The power source 4 can be any type of linear actuator in the prior art; preferably, it is an electromagnetic linear actuator, which has the advantage of fast response speed. The electromagnetic linear actuator is detachably mounted on the base 6 within the variable intake pipe cavity 001, and its power output shaft is parallel to and side-by-side with the mover of the linear actuator and the sliding shaft 8 mounted on the variable intake pipe 3. After the air filter with variable intake function is applied to the locomotive, the electromagnetic linear actuator is electrically connected to the locomotive's ECU (Electronic Control Unit) to achieve the corresponding function of controlling the linear displacement of the variable intake pipe 3; further details are omitted here.

[0036] Specifically, the power output shaft of the electromagnetic linear actuator is fixed side-by-side with the sliding shaft 8 via the connecting piece 5 to further ensure the effective usable length of the variable intake pipe 3 within the variable intake pipe cavity 001, thus optimizing the low-speed performance of the engine. A protective spring is ringed around the power output shaft of the electromagnetic linear actuator, pressed between the connecting piece 5 and the electromagnetic linear actuator. This spring absorbs impact loads and vibrations during actuator operation, reduces instantaneous stress in mechanical transmission components, and extends the service life of the equipment. It also features overload protection, dynamic compensation, and safety redundancy.

[0037] In this embodiment, the connector 5 is arranged as close as possible to the outlet of the variable intake pipe 3, thereby further improving the driving stability of the variable intake pipe 3 and improving the reliability of the connection between the outlet of the variable intake pipe 3 and the inlet of the fixed intake pipe 2; it is especially suitable for air filter structures with variable intake function where the installation position of the drive mechanism is limited and it is difficult to ensure stable driving of the variable intake pipe 3 when the length of the variable intake pipe 3 is relatively long.

[0038] In this embodiment, a guide block 12 is provided on the sliding shaft, and a guide groove 13 that cooperates with the guide block 12 is provided on the base 6. When the sliding shaft 8 is driven by the power source 4 to slide on the slide block 7, the guide block 12 is slidably limited in the guide groove 13. This improves the structural arrangement reliability of the variable intake pipe 3, enhances the displacement reliability of the variable intake pipe 3, and at the same time limits the sway of the variable intake pipe 3, improving the connection accuracy with the fixed intake pipe 2. Specifically, the guide groove 13 is a strip-shaped through hole on the base 6, and the length direction of the through hole is the movement direction of the sliding shaft 8. The guide block 12 is located below the sliding shaft 8 and extends into the guide groove 13. When the variable intake pipe 3 is driven to shift, the guide block 12 is guided and limited by the guide groove 13.

[0039] In this embodiment, the sliding shaft 8 is subjected to a preload force away from the fixed air inlet. After the preload force is applied, the variable air intake pipe 3 is separated from the fixed air intake pipe 2, and the power source 4 drives the variable air intake pipe 3 to connect with the fixed air intake pipe 2 overcoming the preload force. The application of the preload force not only enables the sliding shaft 8 to buffer the driving force of the power source 4, providing a certain protective function to prevent the sliding shaft 8 from shifting due to vibration and causing abnormal vibration noise; it also enables the sliding shaft 8 to reset, improving the controllability of the variable air intake pipe 3 with the sliding shaft 8.

[0040] In this embodiment, a limiting member 9 is fixedly provided on the slide shaft between two adjacent slide blocks to prevent the slide shaft from dislodging. The preload force is applied by a spring 10 disposed between the limiting member 9 and the corresponding slide block 7. An elastic buffer member 11 is disposed between the limiting member 9 and another adjacent slide block 9. The elastic buffer member 11 is used to buffer the reset force between the limiting member 9 and the slide block 7 when the limiting member 9 is reset by the action of the functional member 10, thereby improving the durability of the component.

[0041] In this embodiment, two slide blocks 7 located on the base 6 are arranged opposite each other. The slide shaft 8 passes through the two slide blocks 7, and both ends of the slide shaft 8 are supported by the two slide blocks 7. The slide shaft 8 has a reserved length for displacement on the slide blocks 7. The limiting member 9 includes a limiting ring that is detachably fixed to the slide shaft 8 and a lug that connects the limiting ring and the variable intake pipe 3. The cross-sectional dimension of the slide shaft 8 at the limiting ring exceeds the cross-sectional dimension of the slide shaft 8 to prevent the slide shaft 8 from detaching from the slide block 7. There are two limiting members 9, both located between the two slide blocks 7. The slide shaft 8 and the variable intake pipe 3 segment on which the slide shaft 8 is mounted are arranged in parallel. One end of the connecting member 5 is detachably fixed to the power source 4, and the other end is detachably fixed to the slide shaft 8 and located between the two limiting members 9, connecting the variable intake pipe 3 and the power source 4 side by side. The connecting member 5 located between the two limiting members 9 is close to the adjacent limiting member 9, further improving the stability of the structure during operation. Spring 10 and protective spring are sleeved on the same side of the slide shaft 8. The spring, with preload, is positioned between one of the limiting members 9 and one of the adjacent slide blocks 7. Elastic buffer 11 is a rubber pad that sleeves the slide shaft 8, correspondingly positioned between the other limiting member 9 and another adjacent slide block 7. The aforementioned detachable fixing method can employ interference fit or bolt fastening, etc., to achieve a detachable connection for easy assembly and disassembly; details will not be elaborated further here. In this solution, the detachable fixing of the limiting member 9 and connecting member 5 on the slide shaft 8 is achieved through bolt fastening, while the detachable fixing of the connecting member 5 on the power output shaft is achieved through interference fit.

[0042] In this embodiment, the fixed intake pipe 2 has a fixed pipe inlet, which is located inside the air filter housing 1 and close to the inner surface of the air filter housing 1. The main body of the fixed intake pipe 2 is located outside the air filter housing 1. This design minimizes the length of the fixed intake pipe 2, thereby reducing frictional resistance during high-speed airflow, lowering pumping losses, and making it more suitable for high-speed engine operation. A shorter fixed intake pipe 2 also reduces airflow delay, resulting in a more linear correspondence between throttle opening and intake volume, and improving throttle response sensitivity.

[0043] In this embodiment, the fixed intake pipe 2 has a fixed intake pipe inlet at one end connected to a fixed intake pipe flange I 15 and a fixed intake pipe flange II 16. The fixed intake pipe 2 is fixed to the air filter housing 1 by clamping with the fixed intake pipe flange I 15 and the fixed intake pipe flange II 16, so that the fixed intake pipe inlet is located inside the air filter housing and close to the inner surface of the air filter housing. The fixed intake pipe 2 is sealed and assembled to the air filter housing 1 by clamping, which can improve the installation reliability of the fixed intake pipe 2 on the air filter housing 1, while enhancing the service durability of the fixed intake pipe inlet, ensuring the reliability of the connection between the variable intake pipe 3 and the fixed intake pipe 2 interface, and reducing the risk of air leakage at the interface.

[0044] In this embodiment, the fixed intake pipe flange I 15 is located in the variable intake pipe cavity 001, and the thickness of the fixed intake pipe flange I 15 is greater than the thickness of the fixed intake pipe flange II 16. This improves the load-bearing capacity and impact resistance of the fixed intake pipe 2, enhances the durability of the fixed intake pipe 2, and thus improves the reliability of the connection between the variable intake pipe 3 and the fixed intake pipe 2.

[0045] In this embodiment, the variable intake cavity 001 has an intake port that is far from the fixed intake port, the intake port of the variable intake pipe 3 is close to the intake port of the variable intake cavity 001, and the outlet of the variable intake pipe 3 is close to the intake port of the fixed pipe. This design maximizes the length of the variable intake pipe 3. After connecting with the fixed intake pipe 2, the overall pipe length reaches the optimal length, enhancing the airflow fluctuation effect and improving charging efficiency by utilizing the dynamic fluctuation of intake pressure, especially under low-speed engine conditions. This design forms a resonant cavity by extending the airflow path, which optimizes the intake rhythm and reduces noise. The longer airflow path can utilize the airflow inertia effect to increase vortex intensity, making the air-fuel mixture more uniform, thereby improving combustion stability and torque output, and enhancing the low-speed performance of the engine.

[0046] In this embodiment, the outlet of the variable intake pipe 3 has a variable intake pipe flange 14, and the fixed intake pipe flange I 15 and the variable intake pipe flange 14 are close to each other; the variable intake pipe flange 14 has a cone-shaped outwardly convex positioning part 17, and the fixed intake pipe flange I has a cone-shaped inwardly concave guiding part 18; the guiding part 18 is used to guide the positioning part 17 so that when in use, the variable intake pipe 3 is guided to engage and communicate with the fixed intake pipe 2; when the variable intake pipe 3 and the fixed intake pipe 2 are engaged and communicated, the positioning part 17 and the guiding part 18 are adapted to seal the interface between the variable intake pipe and the fixed intake pipe. By using the variable intake pipe flange 14 and the fixed intake pipe flange I 15, the reliability of the connection between the fixed intake pipe 2 and the variable intake pipe 3 can be improved, the sealing capacity can be enhanced, and the risk of leakage can be reduced. The fixed intake pipe flange I 15 can increase the support area of ​​the variable intake pipe flange 14, resulting in stronger structural support and improving the sealing reliability of the variable intake pipe flange 14 to the air inlet of the fixed intake pipe 2, ensuring the effectiveness of air intake. Furthermore, the combination of the variable intake pipe flange 14 and the fixed intake pipe flange I 15 can also reduce the fitting accuracy between the air inlet of the fixed pipe and the air outlet of the variable intake pipe 3, so that even if there is a deviation in the displacement of the variable intake pipe 3, the effective connection between the fixed intake pipe 2 and the variable intake pipe 3 can be completed while ensuring a seal. In particular, the power source 4 of the drive mechanism connected to the variable intake pipe 3 is close to the air outlet of the variable intake pipe 3, which can further ensure the effective connection between the fixed intake pipe 2 and the variable intake pipe 3 while improving the operational stability of the variable intake pipe 3, and reducing the risk of connection failure between the two. The matching conical surfaces of the positioning part 17 and the guide part 18 ensure a large sealing surface area, further guaranteeing the sealing performance of the connection between the fixed intake pipe 2 and the variable intake pipe 3.

[0047] In this embodiment, the fixed intake pipe 2 is disposed on the side of the air filter housing 1, and the variable intake pipe 3 with the air outlet is bent toward the fixed pipe intake port; on the one hand, it can avoid the assembly of other accessories on the air filter with variable intake function and adapt to complex structural layout; on the other hand, it can increase the service length of the variable intake pipe 3 to further optimize the low-speed performance of the engine.

[0048] This solution also discloses a motorcycle that utilizes the aforementioned air filter with variable intake function. This improves the motorcycle's performance, effectively reduces fuel consumption, and improves emissions.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An air filter with variable intake function, characterized in that: It includes an air filter housing, a drive mechanism, a fixed intake pipe and a variable intake pipe. The variable intake pipe cavity is formed inside the air filter housing after the filter element. The fixed intake pipe is used to connect the variable intake pipe cavity and the engine. The variable intake pipe is located inside the variable intake pipe cavity. The drive mechanism includes a sliding shaft and a sliding base. The sliding shaft reciprocates with a single degree of freedom and is supported by the sliding base in the variable intake pipe cavity. The sliding shaft is connected to the variable intake pipe so that the variable intake pipe can be driven by the drive mechanism to engage with or disconnect from the fixed intake pipe.

2. The air filter with variable intake function according to claim 1, characterized in that: The slide blocks supporting the slide shaft are a plurality of those distributed along the length of the slide shaft.

3. The air filter with variable intake function according to claim 1, characterized in that: The drive mechanism includes a base disposed in the variable intake manifold, a slide seat disposed on the base, a guide block disposed on the slide shaft, and a guide groove disposed on the base to cooperate with the guide block.

4. The air filter with variable intake function according to claim 2, characterized in that: The slide shaft is subjected to a preload force at the air inlet, away from the fixed air inlet pipe.

5. The air filter with variable intake function according to claim 4, characterized in that: A limiting member is fixed on the slide shaft between two adjacent slide blocks to prevent the slide shaft from coming out, and the preload force is applied by a spring disposed between the limiting member and the corresponding slide block; An elastic buffer is provided between the limiting member and the adjacent slide.

6. The air filter with variable intake function according to claim 1, characterized in that: The fixed air intake pipe has a fixed air inlet, which is located inside the air filter housing and close to the inner surface of the air filter housing.

7. The air filter with variable intake function according to claim 6, characterized in that: The fixed air intake pipe has a fixed air intake port at one end connected to a fixed air intake pipe flange I and a fixed air intake pipe flange II. The fixed air intake pipe is fixed to the air filter housing by clamping through the fixed air intake pipe flange I and the fixed air intake pipe flange II, so that the fixed air intake port is located inside the air filter housing and close to the inner surface of the air filter housing.

8. The air filter with variable intake function according to claim 7, characterized in that: The fixed intake pipe flange I is located in the variable intake pipe cavity, and the thickness of the fixed intake pipe flange I is greater than the thickness of the fixed intake pipe flange II.

9. The air filter with variable intake function according to claim 8, characterized in that: The outlet of the variable intake pipe has a variable intake pipe flange, and the fixed intake pipe flange I and the variable intake pipe flange are close to each other; the variable intake pipe flange has a cone-shaped outward convex positioning part, and the fixed intake pipe flange I has a cone-shaped inward concave guiding part. When the variable intake pipe is connected to the fixed intake pipe, the positioning part and the guiding part are adapted to seal the interface between the variable intake pipe and the fixed intake pipe.

10. A motorcycle, characterized in that: The motorcycle application has an air filter with variable intake function as described in any one of claims 1-9.

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