Variable intake system

Abstract

The utility model relates to a variable air inlet system which is arranged in an air filter of a motorcycle engine. The variable air inlet system comprises a mounting part, a driver and a lengthening pipe. The mounting part is arranged in the air inlet box, the driver is arranged on the mounting part, and the lengthening pipe acts under the driving force of the driver, so that the lengthening pipe is selectively combined with or separated from the air inlet pipe. When the lengthening pipe is combined with the air inlet pipe, the lengthening pipe and the air inlet pipe form a total air inlet length, and the difference between the total air inlet length and the pipe length of the air inlet pipe is the effective pipe length of the lengthening pipe. And the effective pipe length of the lengthening pipe is not shorter than one third of the pipe length of the air inlet pipe or is not longer than the pipe length of the air inlet pipe. Therefore, the utility model can ensure that the optimal air inlet efficiency points of the lengthening pipe and the air inlet pipe in a separation state and a combination state have a certain rotation speed interval fall, and the optimal air inlet point in the combination state is in a rotation speed interval commonly used by a vehicle, so that power output is maintained in a linear torsion mode; and the phenomenon that the torsion is abnormally lowered at a specific rotating speed is avoided.

Description

Technical Field

[0001] The utility model relates to a variable air intake system, in particular to a variable air intake system suitable for a motorcycle engine. Background Art

[0002] See also Figure 1 , is a schematic diagram of an existing air filter. The figure shows an existing air filter 9, which is arranged on a motorcycle engine. The air filter 9 includes an air intake box 91, an air filter element 92, an air intake pipe 93 and an air intake box cover 94. The air filter element 92 is accommodated in the accommodation space formed by the air intake box 91 and the air intake box cover 94. The air intake pipe 93 is connected to the air intake box 91. The external air can only enter the air intake box 91 after being filtered by the air filter element 92, and then enter the motorcycle engine through the air intake pipe 93 for combustion. The diameter and length of the air intake pipe 93 determine the intake inertia of the engine, and therefore also determine the power trend of the engine. Among them, a thinner and longer intake pipe design is more conducive to the intake efficiency when the engine is at a low speed; a thicker and shorter intake pipe design is more conducive to the intake efficiency when the engine is at a high speed.

[0003] Since a single pipe length has only one optimal point for air intake efficiency, when setting up a vehicle, it is often limited by the need to take into account both low-speed and high-speed riding experiences, and choosing a more balanced pipe length setting makes it difficult for the vehicle performance to have a major breakthrough. For this reason, the inventor, in the spirit of active invention, in order to make the motorcycle engine obtain better performance and fuel consumption, has been eager to think of a variable intake system that can solve the above problems. After several research experiments, the present utility model was finally completed. Utility Model Content

[0004] The main purpose of the utility model is to provide a variable intake system, which can adjust the overall length of the intake pipe by selectively combining or separating the growth pipe with the intake pipe, so as to simultaneously improve the power performance at high and low speeds and improve the fuel consumption level of the engine, and is conducive to the spatial configuration of the air filter, and overcomes high-speed vibration, so as to obtain more stable functionality and improve durability, which is actually an optimized design. In addition, the variable intake system of the utility model limits the pipe length ratio of the growth pipe and the intake pipe to ensure that there is a certain speed range difference between the intake efficiency optimal points of the growth pipe and the intake pipe, so that the speed range of the power gain of the variable intake system covers a wider range, thereby maintaining the power output in the form of linear torque, and will not cause abnormal low torque at a specific speed.

[0005] In order to achieve the above-mentioned purpose, the variable air intake system of the utility model is arranged in an air filter of a motorcycle engine, and the air filter has an air intake box and an air intake pipe connected to the air intake box. The variable air intake system includes a mounting portion, a driver, and a growth pipe. The mounting portion is arranged in the air intake box, and the driver is arranged on the mounting portion. The growth pipe is actuated by the driving force of the driver, so that the growth pipe can be selectively combined with or separated from the air intake pipe. Among them, when the growth pipe and the air intake pipe are in a combined state, the growth pipe and the air intake pipe form a total air intake length, and the difference between the total air intake length and the pipe length of the air intake pipe is the effective pipe length of the growth pipe, and the effective pipe length of the growth pipe shall not be shorter than one third of the pipe length of the air intake pipe.

[0006] Another variable air intake system of the utility model is arranged in an air filter of a motorcycle engine, and the air filter has an air intake box and an air intake pipe connected to the air intake box. The variable air intake system includes a mounting portion, a driver, and a growth pipe. The mounting portion is arranged in the air intake box, and the driver is arranged on the mounting portion. The growth pipe is actuated by the driving force of the driver, so that the growth pipe can be selectively combined with or separated from the air intake pipe. Among them, when the growth pipe and the air intake pipe are in a combined state, the growth pipe and the air intake pipe form a total air intake length, and the difference between the total air intake length and the pipe length of the air intake pipe is the effective pipe length of the growth pipe, and the effective pipe length of the growth pipe shall not be longer than the pipe length of the air intake pipe, so as to ensure that the optimal point of air intake efficiency when the growth pipe and the air intake pipe are combined falls within the common speed range of the vehicle.

[0007] The variable air intake system may further include a slide rail, which may be disposed on the mounting portion by a slide rail bracket. The driver may include a driving member and a push rod connected to the driving member, and the driving member may cause the push rod to produce a linear displacement. The growth tube may have a connecting portion, which may be slidably disposed on the slide rail and connected to the push rod, wherein the push rod may be actuated by the driving force of the driving member, so that the connecting portion may slide on the slide rail, thereby enabling the growth tube to be selectively combined with or separated from the air intake pipe.

[0008] The driving member may be a solenoid valve with a magnetic member to drive the push rod to operate.

[0009] The driving member can be connected to the push rod through a first elastic member, and the first elastic member is used as a source of reverse thrust.

[0010] The driving member can be electrically driven. When the growth tube is activated, the driving member is electrically driven, and when the growth tube is not activated, the driving member is not electrically driven. That is, when the growth tube is about to change the connection state with the intake pipe, the driving member needs to be electrically driven, and at other times, it does not need to be electrically driven to avoid overheating of the driving member.

[0011] The driving direction of the driving member can be the same as the actuation direction of the growth tube, which is helpful for force transmission and reduces energy loss.

[0012] The driver may further include a sealing cover through which a wire group is passed, the wire group is connected to the driving member, and the sealing cover is arranged on the air intake box to maintain the air tightness of the air intake box.

[0013] The mounting portion and the air intake box may be an integrated structure.

[0014] The connecting portion can be connected to the push rod via a second elastic member.

[0015] The above summary and the following detailed description are exemplary in nature and are intended to further illustrate the scope of the patent application of the present utility model. Other purposes and advantages of the present utility model will be described in the subsequent specific implementation methods and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of an existing air filter.

[0017] Figure 2 The figure is a side view of a motorcycle engine according to a preferred embodiment of the present invention.

[0018] Figure 3 This is a side view of a variable intake system in a preferred embodiment of the utility model, in which the growth pipe and the intake pipe are in a separated state.

[0019] Figure 4 This is a side view of a variable air intake system in a preferred embodiment of the utility model, in which the growth pipe and the air intake pipe are in a combined state.

[0020] Figure 5 The figure is a schematic diagram of the structure of a driver according to a preferred embodiment of the present invention.

[0021] Figure 6 This is a schematic diagram of the ratio of the length of the growth pipe to the length of the intake pipe in a preferred embodiment of the utility model.

[0022] Main component symbols

[0023] 1 Variable intake system

[0024] 10 Air filter

[0025] 101 Air intake box

[0026] 102 Intake pipe

[0027] 102a Front end of intake pipe

[0028] 11 Motorcycle Engine

[0029] 12 Vehicles

[0030] 13 Frame

[0031] 14 Wheels

[0032] 2 Installation

[0033] 20 Lock accessories

[0034] 3 Drivers

[0035] 31 Drive element

[0036] 32 Putter

[0037] 33 Magnetic parts

[0038] 34 first elastic member

[0039] 35 Line Group

[0040] 36 Sealing cover

[0041] 37 Connectors

[0042] 4 Slide rails

[0043] 41 Slide rail bracket

[0044] 5 Growth tube

[0045] 5a Rear end of the growth tube

[0046] 5b Pipe joint

[0047] 50 Connection

[0048] 62 second elastic member

[0049] 9 Air filter

[0050] 91 Air intake box

[0051] 92 Air filter

[0052] 93 Intake pipe

[0053] 94 Air intake box cover

[0054] L Total length of air intake

[0055] L1 Effective pipe length

[0056] L2 Tube length DETAILED DESCRIPTION

[0057] See also Figures 2 to 6, which are respectively a side view of a motorcycle engine of a preferred embodiment of the utility model, a side view of a variable air intake system in which the growth pipe and the air intake pipe are separated, a side view of a variable air intake system in which the growth pipe and the air intake pipe are combined, a schematic diagram of the structure of the driver, and a schematic diagram of the ratio of the length of the growth pipe to the air intake pipe. The figure shows a variable air intake system 1, which is arranged in an air filter 10 of a motorcycle engine 11. The motorcycle engine 11 of this embodiment is connected to a frame 13 of a vehicle 12 at one end and to a wheel 14 at the other end. The motorcycle engine 11 is a swing engine or a fixed engine, and the vehicle 12 is a scooter. The air filter 10 has an air intake box 101 and an air intake pipe 102 connected to the air intake box 101. The variable air intake system 1 mainly includes a mounting portion 2, a driver 3, a slide rail 4, and a growth pipe 5.

[0058] In the present embodiment, the mounting portion 2 is fixedly mounted in the air intake box 101 by a plurality of locking accessories 20, but the present invention is not limited thereto. The mounting portion 2 and the air intake box 101 may also be an integrated structure. The driver 3 is disposed on the mounting portion 2, and includes a driving member 31, a push rod 32, a magnetic member 33, a first elastic member 34, a wire group 35, and a sealing cover 36. In the present embodiment, the driving member 31 is an electrically driven solenoid valve that can cause the push rod 32 to produce a linear displacement. The magnetic member 33 is a permanent magnet for providing an adsorption magnetic force. The first elastic member 34 is a compression spring that connects the driving member 31 and the push rod 32 to provide an elastic restoring force. One end of the wire group 35 is connected to the driving member 31, and the other end has a connector 37, which can extend out of the air intake box 101 to connect to the vehicle power supply and signal source. The sealing cover 36 is penetrated with the wire group 35 and assembled on the air intake box 101, so that the air intake box 101 still maintains its airtightness when the wire group 35 passes through. In this embodiment, the slide rail 4 is arranged on the mounting portion 2 with two slide rail brackets 41. The growth tube 5 has two connecting parts 50, which are slidably arranged on the slide rail 4 and connected to the push rod 32 by a second elastic member 62. The second elastic member 62 is a compression spring, which is used to provide elastic buffering force between the connecting part 50 and the push rod 32 and eliminate the gap between the connecting part 50 and the push rod 32.

[0059] like Figure 3 As shown, when the motorcycle engine 11 reaches a high speed, in order to obtain a better intake efficiency, the drive member 31 of the variable intake system 1 will receive a signal indication to provide a driving force, and cooperate with the elastic restoring force of the first elastic member 34 as a reverse thrust source to linearly drive the push rod 32 to move away from the driver 3 side, thereby pushing the growth tube 5 to move along the slide rail 4, away from the intake pipe 102, and use the first elastic member 34 to apply force to push the push rod 32 to maintain the separation state of the growth tube 5 and the intake pipe 102, so as to shorten the overall pipe length and improve the high speed intake efficiency.

[0060] like Figure 4 As shown, when the motorcycle engine 11 returns to a low speed, in order to obtain a better intake efficiency, the drive member 31 of the variable intake system 1 will receive a signal indication to provide a driving force to linearly drive the push rod 32 to move toward the driver 3 side until the push rod 32 abuts against the drive member 31, and the push rod 32 is fixed by the magnetic member 33 to maintain the connection state between the extension pipe 5 and the intake pipe 102, so that the overall pipe length is increased and the low speed intake efficiency is improved.

[0061] In this embodiment, the driving direction of the driving member 31 is the same as the actuation direction of the growth tube 5, which is helpful for force transmission and reduces energy loss. In addition, the driving member 31 is driven by electricity. When the growth tube 5 is actuated, the driving member 31 is powered on and driven, and when the growth tube 5 is not actuated, the driving member 31 is not powered on and driven. That is, when the growth tube 5 is to change the connection state with the intake pipe 102, the driving member 31 needs to be powered on and driven, and it does not need to be powered on and driven at other times to avoid overheating of the driving member 31.

[0062] Please also read Figure 6 , which is a schematic diagram of the ratio of the length of the growth pipe to the intake pipe of a preferred embodiment of the utility model. The air filter 10 of the motorcycle engine 11 shown in the figure is a simplified schematic diagram drawn based on the structural features of the aforementioned variable intake system 1, mainly focusing on the ratio of the length of the growth pipe 5 to the intake pipe 102. The structural features of the variable intake system 1 are not drawn on the drawing, so please be informed in advance.

[0063] In this embodiment, when the growth tube 5 and the air intake pipe 102 are in a combined state, the growth tube 5 and the air intake pipe 102 form a total air intake length L, and the difference between the total air intake length L and the pipe length L2 of the air intake pipe 102 is the effective pipe length L1 of the growth tube 5, that is, the sum of the effective pipe length L1 of the growth tube 5 and the pipe length L2 of the air intake pipe 102 is the total air intake length L, and the effective pipe length L1 is the pipe length from the rear end pipe opening 5a of the growth tube to the pipe opening junction 5b of the growth tube 5 and the air intake pipe 102; and the pipe length L2 of the air intake pipe 102 is the pipe length from the front end pipe opening 102a of the air intake pipe to the pipe opening junction 5b of the growth tube 5 and the air intake pipe 102. Among them, through research and experiments, it is concluded that the effective pipe length L1 of the growth tube 5 shall not be shorter than one-third of the pipe length L2 of the air intake pipe 102, and the effective pipe length L1 of the growth tube 5 shall not be longer than the pipe length L2 of the air intake pipe 102. That is, the optimal length design range of the effective tube length L1 of the growth tube 5 of the motorcycle engine 11 is between one third of the tube length L2 of the intake pipe 102 and the full length.

[0064] Through the design of the above-mentioned pipe length ratio, it can be ensured that there is a certain speed range difference between the optimal points of intake efficiency in the combined state and the separated state, so that the speed range of the power gain of the variable intake system 1 covers a wider range, and the optimal point of intake in the combined state falls within the speed range commonly used by the vehicle, thereby maintaining power output in the form of linear torque without the phenomenon of abnormally low torque at a specific speed, so as to obtain maximum benefit.

[0065] The above embodiments are merely examples for the convenience of explanation. The scope of rights claimed by the present utility model shall be based on the scope of protection required by the patent application documents, and is not limited to the above embodiments.

Claims

1. A variable air intake system, arranged in an air filter of a motorcycle engine, characterized in that: The air filter has an air intake box and an air intake pipe connected to the air intake box. The variable air intake system includes: A mounting portion, disposed in the air intake box; a driver, disposed on the mounting portion; and A growth tube, actuated by the driving force of the driver, so that the growth tube can be selectively combined with or separated from the air inlet pipe; Among them, when the growth tube and the intake pipe are in a combined state, the growth tube and the intake pipe form a total intake length, and the difference between the total intake length and the tube length of the intake pipe is the effective tube length of the growth tube, and the effective tube length of the growth tube shall not be shorter than one third of the tube length of the intake pipe.

2. A variable air intake system, arranged in an air filter of a motorcycle engine, characterized in that: The air filter has an air intake box and an air intake pipe connected to the air intake box. The variable air intake system includes: A mounting portion, disposed in the air intake box; a driver, disposed on the mounting portion; and A growth tube, actuated by the driving force of the driver, so that the growth tube can be selectively combined with or separated from the air inlet pipe; Among them, when the growth tube and the intake pipe are in a combined state, the growth tube and the intake pipe form a total intake length, and the difference between the total intake length and the tube length of the intake pipe is the effective tube length of the growth tube, and the effective tube length of the growth tube shall not be longer than the tube length of the intake pipe.

3. The variable intake system according to claim 1 or claim 2, characterized in that: It also includes a slide rail, which is arranged on the mounting portion with a slide rail bracket; the driver includes a driving member and a push rod connected to the driving member, and the driving member can cause the push rod to produce linear displacement; the growth tube has a connecting portion, which is slidably arranged on the slide rail and connected to the push rod; wherein the push rod is actuated by the driving force of the driving member, so that the connecting portion can slide on the slide rail, thereby allowing the growth tube to be selectively combined with or separated from the intake pipe.

4. The variable intake system according to claim 3, characterized in that: The driving component is a solenoid valve with a magnetic component.

5. The variable intake system according to claim 3, characterized in that: The driving member is connected to the push rod through a first elastic member to serve as a reverse thrust source.

6. The variable intake system according to claim 3, characterized in that: The driving member is driven by electricity. When the growth tube is actuated, the driving member is powered on and driven; when the growth tube is not actuated, the driving member is not powered on and driven.

7. The variable intake system according to claim 3, characterized in that: The driving direction of the driving member is the same as the actuating direction of the growth tube.

8. The variable intake system according to claim 3, characterized in that: The driver also includes a sealing cover through which a wire group is passed. The wire group is connected to the driving member, and the sealing cover is arranged on the air inlet box.

9. The variable intake system according to claim 3, characterized in that: The mounting portion and the air intake box are an integrated structure.

10. The variable intake system according to claim 3, characterized in that: The connecting portion is connected to the push rod via a second elastic member.

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