Intake resonator design method, device, equipment and readable storage medium

Abstract

The present invention provides an intake resonator design method, device, equipment and readable storage medium. The method includes: determining a first noise frequency, a second noise frequency and a third noise frequency to be optimized, wherein the first noise frequency is greater than or equal to a preset frequency, the third noise frequency is greater than the first noise frequency, and the second noise frequency is less than the preset frequency; determining the length of the connecting pipe of the intake resonator according to the first noise frequency; determining the total length of the branch pipes of the intake resonator according to the third noise frequency, wherein the total length of the branch pipes is greater than the length of the connecting pipes; determining the resonant cavity volume and the resonant cavity equivalent area of ​​the intake resonator according to the length of the connecting pipe, the total length of the branch pipes, the radius of the connecting pipe and the second noise frequency. Through the present invention, it is achieved to optimize multiple noise frequencies through a single intake resonator.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle design, and in particular to an intake resonator design method, device, equipment and readable storage medium. Background Art

[0002] During the development of the automotive intake system assembly, it is often necessary to design an intake resonator to eliminate the low- and medium-frequency noise peaks to meet the intake noise target requirements.

[0003] In the prior art, generally, the relevant parameters of a single intake resonator are designed for a single noise frequency that needs to be optimized, thereby setting a single intake resonator, that is, one intake resonator can only eliminate a single noise frequency; when there are multiple noise frequencies that need to be optimized, multiple intake resonators need to be set accordingly. Summary of the invention

[0004] The main purpose of the present invention is to provide an intake resonator design method, device, equipment and readable storage medium, aiming to solve the technical problem in the prior art that an intake resonator can only optimize a single noise frequency.

[0005] In a first aspect, the present invention provides an intake resonator design method, the intake resonator design method comprising:

[0006] Determine a first noise frequency, a second noise frequency, and a third noise frequency to be optimized, wherein the first noise frequency is greater than or equal to a preset frequency, the third noise frequency is greater than the first noise frequency, and the second noise frequency is less than the preset frequency;

[0007] determining a connecting pipe length of the intake resonator according to the first noise frequency;

[0008] Determine the total length of the branch pipe of the intake resonator according to the third noise frequency, wherein the total length of the branch pipe is greater than the length of the connecting pipe;

[0009] The resonance cavity volume and the resonance cavity equivalent area of ​​the intake resonator are determined according to the length of the connecting pipe, the total length of the branch pipes, the radius of the connecting pipe and the second noise frequency.

[0010] Optionally, the step of determining the length of the connecting pipe of the intake resonator according to the first noise frequency includes:

[0011] Substitute the first noise frequency into the first silencing frequency formula to obtain the connecting pipe length of the intake resonator, where the first silencing frequency formula is:

[0012]

[0013] Wherein, f1 is the first noise frequency, c is the speed of sound, and L1 is the length of the connecting pipe of the intake resonator.

[0014] Optionally, the step of determining the total length of the branch pipe of the intake resonator according to the third noise frequency includes:

[0015] Substitute the third noise frequency into the third muffler frequency formula to obtain the total length of the branch pipe of the intake resonator, where the third muffler frequency formula is:

[0016]

[0017] Wherein, f3 is the third noise frequency, c is the speed of sound, L3 is the total length of the branch pipe of the intake resonator, and n is a positive integer.

[0018] Optionally, the step of determining the resonance cavity volume and the resonance cavity equivalent area of ​​the intake resonator according to the length of the connecting pipe, the total length of the branch pipe, the radius of the connecting pipe and the second noise frequency includes:

[0019] Determine the resonance cavity volume of the intake resonator according to the length of the connecting pipe, the radius of the connecting pipe and the second noise frequency;

[0020] The equivalent area of ​​the resonant cavity is determined based on the volume of the resonant cavity, the length of the connecting pipe and the total length of the branch pipe.

[0021] Optionally, the step of determining the resonance cavity volume of the intake resonator according to the length of the connecting pipe, the radius of the connecting pipe and the second noise frequency includes:

[0022] Substitute the length and radius of the connecting pipe into the length correction formula to obtain the effective length of the connecting pipe, where the length correction formula is:

[0023]

[0024] Where r is the radius of the connecting pipe, and L′1 is the effective length of the connecting pipe;

[0025] Substitute the radius of the connecting pipe into the cross-sectional area calculation formula to obtain the cross-sectional area of ​​the connecting pipe, where the cross-sectional area calculation formula is:

[0026] S=πr 2

[0027] Where S is the cross-sectional area of ​​the connecting pipe;

[0028] Substitute the second noise frequency, the effective length of the connecting pipe, and the cross-sectional area of ​​the connecting pipe into the second silencing frequency formula to obtain the resonance cavity volume of the intake resonator, where the second silencing frequency formula is:

[0029]

[0030] Wherein, f2 is the second noise frequency, and V is the resonance cavity volume of the intake resonator.

[0031] Optionally, the step of determining the equivalent area of ​​the resonant cavity according to the volume of the resonant cavity, the length of the connecting pipe and the total length of the branch pipes includes:

[0032] Substitute the volume of the resonant cavity, the length of the connecting pipe, and the total length of the branch pipe into the equivalent area calculation formula to obtain the equivalent area of ​​the resonant cavity, where the equivalent area calculation formula is:

[0033]

[0034] Where S' is the equivalent area of ​​the resonant cavity.

[0035] Optionally, the radius of the connecting pipe is larger than the radius of the main pipe of the intake resonator and smaller than the diameter of the main pipe.

[0036] In a second aspect, the present invention further provides an intake resonator design device, the intake resonator design device comprising:

[0037] A first determination module, used to determine a first noise frequency, a second noise frequency, and a third noise frequency to be optimized, wherein the first noise frequency is greater than or equal to a preset frequency, the third noise frequency is greater than the first noise frequency, and the second noise frequency is less than the preset frequency;

[0038] A second determination module, configured to determine a connecting pipe length of the intake resonator according to the first noise frequency;

[0039] A third determination module, configured to determine a total length of a branch pipe of the intake resonator according to a third noise frequency, wherein the total length of the branch pipe is greater than a length of the connecting pipe;

[0040] The fourth determination module is used to determine the resonance cavity volume and the resonance cavity equivalent area of ​​the intake resonator according to the length of the connecting pipe, the total length of the branch pipe, the radius of the connecting pipe and the second noise frequency.

[0041] In a third aspect, the present invention also provides an intake resonator design device, comprising a processor, a memory, and an intake resonator design program stored in the memory and executable by the processor, wherein when the intake resonator design program is executed by the processor, the steps of the intake resonator design method as described above are implemented.

[0042] In a fourth aspect, the present invention further provides a readable storage medium, on which a design program for an intake resonator is stored, wherein when the design program for an intake resonator is executed by a processor, the steps of the design method for an intake resonator as described above are implemented.

[0043] In the present invention, the first noise frequency, the second noise frequency and the third noise frequency to be optimized are determined, wherein the first noise frequency is greater than or equal to the preset frequency, the third noise frequency is greater than the first noise frequency, and the second noise frequency is less than the preset frequency; the length of the connecting pipe of the intake resonator is determined according to the first noise frequency; the total length of the branch pipes of the intake resonator is determined according to the third noise frequency, wherein the total length of the branch pipes is greater than the length of the connecting pipes; the volume of the resonance cavity of the intake resonator and the equivalent area of ​​the resonance cavity are determined according to the length of the connecting pipe, the total length of the branch pipes, the radius of the connecting pipe and the second noise frequency. Through the present invention, the length of the connecting pipe, the total length of the branch pipes, the volume of the resonance cavity and the equivalent area of ​​the resonance cavity of the intake resonator are determined based on the three noise frequencies to be optimized, thereby realizing the optimization of multiple noise frequencies through a single intake resonator. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A schematic diagram of the hardware structure of an intake resonator design device involved in an embodiment of the present invention;

[0045] Figure 2 A schematic diagram of a flow chart of an embodiment of a method for designing an intake resonator according to the present invention;

[0046] Figure 3 A schematic diagram of the functional modules of an embodiment of an intake resonator design device of the present invention.

[0047] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0048] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0049] In a first aspect, an embodiment of the present invention provides an intake resonator design device, which may be a device having a data processing function, such as a personal computer (PC), a notebook computer, or a server.

[0050] Reference Figure 1 , Figure 1This is a schematic diagram of the hardware structure of the air intake resonator design device involved in the embodiment of the present invention. In the embodiment of the present invention, the air intake resonator design device may include a processor 1001 (such as a central processing unit, CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components; the user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard); the network interface 1004 may optionally include a standard wired interface, a wireless interface (such as wireless fidelity WIreless-FIdelity, WI-FI interface); the memory 1005 may be a high-speed random access memory (random access memory, RAM), or a stable memory (non-volatile memory), such as a disk storage, and the memory 1005 may optionally be a storage device independent of the aforementioned processor 1001. Those skilled in the art will understand that Figure 1 The hardware structure shown in the figure does not constitute a limitation of the present invention, and may include more or less components than those shown in the figure, or combine certain components, or arrange the components differently.

[0051] Continue to refer to Figure 1 , Figure 1 The memory 1005 as a computer storage medium may include an operating system, a network communication module, a user interface module, and an intake resonator design program.

[0052] The processor 1001 may call the intake resonator design program stored in the memory 1005 and perform the following steps:

[0053] Determine a first noise frequency, a second noise frequency, and a third noise frequency to be optimized, wherein the first noise frequency is greater than or equal to a preset frequency, the third noise frequency is greater than the first noise frequency, and the second noise frequency is less than the preset frequency;

[0054] determining a connecting pipe length of the intake resonator according to the first noise frequency;

[0055] Determine the total length of the branch pipe of the intake resonator according to the third noise frequency, wherein the total length of the branch pipe is greater than the length of the connecting pipe;

[0056] The resonance cavity volume and the resonance cavity equivalent area of ​​the intake resonator are determined according to the length of the connecting pipe, the total length of the branch pipes, the radius of the connecting pipe and the second noise frequency.

[0057] Furthermore, in one embodiment, the processor 1001 may also call an intake resonator design program stored in the memory 1005 and perform the following steps:

[0058] Substitute the first noise frequency into the first silencing frequency formula to obtain the connecting pipe length of the intake resonator, where the first silencing frequency formula is:

[0059]

[0060] Wherein, f1 is the first noise frequency, c is the speed of sound, and L1 is the length of the connecting pipe of the intake resonator.

[0061] Furthermore, in one embodiment, the processor 1001 may also call an intake resonator design program stored in the memory 1005 and perform the following steps:

[0062] Substitute the third noise frequency into the third muffler frequency formula to obtain the total length of the branch pipe of the intake resonator, where the third muffler frequency formula is:

[0063]

[0064] Wherein, f3 is the third noise frequency, c is the speed of sound, L3 is the total length of the branch pipe of the intake resonator, and n is a positive integer.

[0065] Furthermore, in one embodiment, the processor 1001 may also call an intake resonator design program stored in the memory 1005 and perform the following steps:

[0066] Determine the resonance cavity volume of the intake resonator according to the length of the connecting pipe, the radius of the connecting pipe and the second noise frequency;

[0067] The equivalent area of ​​the resonant cavity is determined based on the volume of the resonant cavity, the length of the connecting pipe and the total length of the branch pipe.

[0068] Furthermore, in one embodiment, the processor 1001 may also call an intake resonator design program stored in the memory 1005 and perform the following steps:

[0069] Substitute the length and radius of the connecting pipe into the length correction formula to obtain the effective length of the connecting pipe, where the length correction formula is:

[0070]

[0071] Where r is the radius of the connecting pipe, and L′1 is the effective length of the connecting pipe;

[0072] Substitute the radius of the connecting pipe into the cross-sectional area calculation formula to obtain the cross-sectional area of ​​the connecting pipe, where the cross-sectional area calculation formula is:

[0073] S=πr 2

[0074] Where S is the cross-sectional area of ​​the connecting pipe;

[0075] Substitute the second noise frequency, the effective length of the connecting pipe, and the cross-sectional area of ​​the connecting pipe into the second silencing frequency formula to obtain the resonance cavity volume of the intake resonator, where the second silencing frequency formula is:

[0076]

[0077] Wherein, f2 is the second noise frequency, and V is the resonance cavity volume of the intake resonator.

[0078] Furthermore, in one embodiment, the processor 1001 may also call an intake resonator design program stored in the memory 1005 and perform the following steps:

[0079] Substitute the volume of the resonant cavity, the length of the connecting pipe, and the total length of the branch pipe into the equivalent area calculation formula to obtain the equivalent area of ​​the resonant cavity, where the equivalent area calculation formula is:

[0080]

[0081] Where S' is the equivalent area of ​​the resonant cavity.

[0082] Furthermore, in one embodiment, the radius of the connecting pipe is greater than the radius of the main pipe of the intake resonator and smaller than the diameter of the main pipe.

[0083] In a second aspect, an embodiment of the present invention provides a method for designing an intake resonator.

[0084] In one embodiment, referring to Figure 2 , Figure 2 FIG. 1 is a flow chart of an embodiment of a method for designing an intake resonator according to the present invention. Figure 2 As shown, the intake resonator design method includes:

[0085] Step S10, determining a first noise frequency, a second noise frequency, and a third noise frequency to be optimized, wherein the first noise frequency is greater than or equal to a preset frequency, the third noise frequency is greater than the first noise frequency, and the second noise frequency is less than the preset frequency;

[0086] In this embodiment, three noise frequencies to be optimized are determined by simulation analysis of the vehicle noise or the engine intake system, and the largest noise frequency is used as the third noise frequency, the second largest noise frequency is used as the first noise frequency, and the smallest noise frequency is used as the second noise frequency. The first noise frequency is greater than or equal to the preset frequency, and the second noise frequency is less than the preset frequency. The preset frequency can be 500 Hz.

[0087] Step S20, determining the length of the connecting pipe of the intake resonator according to the first noise frequency;

[0088] In this embodiment, the length of the connecting pipe of the intake resonator is determined according to the first noise frequency, so as to optimize the first noise frequency. Among them, the silencing effect of the connecting pipe of the resonator is: using the principle of standing waves of the open-open pipeline, one end of the resonator connecting pipe is connected to the main pipeline, and the other end is connected to the resonant cavity, satisfying the open-open pipeline condition. Therefore, in theory, the resonator connecting pipe can generate standing waves for the target frequency through optimized design. Usually, the standing waves on the main pipeline will increase the noise, and the sound is equivalent to passing through an amplifier, which will not have a silencing effect. However, if the standing wave is generated on the branch pipe, it will increase the sound resonance of the frequency of this part of the pipeline, and then play a role similar to that of a 1 / 4 wavelength tube, attenuating the standing wave frequency on the main pipeline, and playing a role in reducing noise. However, the standing wave frequency of the connecting pipe cannot be determined according to the 1 / 4 wavelength tube, because the 1 / 4 wavelength tube is an open-closed boundary condition, and the resonator connecting pipe is an open-open boundary condition, and its frequency calculation should be determined according to the 1 / 2 wavelength tube.

[0089] Furthermore, in one embodiment, step S20 includes:

[0090] Substitute the first noise frequency into the first silencing frequency formula to obtain the connecting pipe length of the intake resonator, where the first silencing frequency formula is:

[0091]

[0092] Wherein, f1 is the first noise frequency, c is the speed of sound, and L1 is the length of the connecting pipe of the intake resonator.

[0093] In this embodiment, the first noise frequency f1 is substituted into the first noise elimination frequency formula to obtain the value of the connecting pipe length L1 of the intake resonator.

[0094] Step S30, determining the total length of the branch pipe of the intake resonator according to the third noise frequency, wherein the total length of the branch pipe is greater than the length of the connecting pipe;

[0095] In this embodiment, the total length of the branch pipe of the intake resonator is determined according to the third noise frequency, so as to optimize the third noise frequency, which needs to meet the condition that the total length of the branch pipe is greater than the length of the connecting pipe. Among them, the noise reduction effect of the branch pipe of the resonator is: utilizing the principle of standing waves in an open-closed pipe, one end of the resonator connecting pipe is connected to the main pipe, and the other end is connected to the resonance cavity, and the resonance cavity is closed, which meets the open-closed pipe condition. Therefore, in theory, the entire branch pipe of the resonator can generate standing waves for the target frequency through optimized design. Usually, standing waves on the main pipe will increase noise, and the sound is equivalent to passing through an amplifier, which will not have a noise reduction effect. However, if the standing wave is generated on the branch pipe, it will increase the sound resonance of the frequency of this part of the pipe, and then play the role of a 1 / 4 wavelength tube, attenuating the frequency of the standing wave on the main pipe, and play a role in reducing noise.

[0096] Furthermore, in one embodiment, step S30 includes:

[0097] Substitute the third noise frequency into the third muffler frequency formula to obtain the total length of the branch pipe of the intake resonator, where the third muffler frequency formula is:

[0098]

[0099] Wherein, f3 is the third noise frequency, c is the speed of sound, L3 is the total length of the branch pipe of the intake resonator, and n is a positive integer.

[0100] In this embodiment, the third noise frequency f3 is substituted into the second noise elimination frequency formula, and the value of n is selected so that the total length L3 of the branch pipe of the intake resonator finally calculated is greater than L1.

[0101] Step S40, determining the resonance cavity volume and the resonance cavity equivalent area of ​​the intake resonator according to the length of the connecting pipe, the total length of the branch pipes, the radius of the connecting pipe and the second noise frequency.

[0102] In this embodiment, the resonance cavity volume and the resonance cavity equivalent area of ​​the intake resonator are determined according to the length of the connecting pipe, the total length of the branch pipe, the radius of the connecting pipe and the second noise frequency, so as to optimize the second noise frequency. The silencing effect of the resonance cavity is as follows: according to the classic lumped parameter model and the spring oscillator theory, the air in the resonance cavity is equivalent to a spring, and the air in the connecting pipe is equivalent to a mass block. When the sound of the main pipe passes through the spring oscillator, it will push the spring oscillator to move, thereby attenuating the sound energy. The resonance frequency of the spring oscillator system is the silencing frequency.

[0103] Furthermore, in one embodiment, step S40 includes:

[0104] Step S401, determining the resonance cavity volume of the intake resonator according to the length of the connecting pipe, the radius of the connecting pipe and the second noise frequency;

[0105] In this embodiment, the resonance cavity volume of the intake resonator is first determined according to the length of the connecting pipe, the radius of the connecting pipe and the second noise frequency, wherein the radius of the connecting pipe is reasonably set according to requirements such as assembly processability and stability.

[0106] Furthermore, in one embodiment, step S401 includes:

[0107] Substitute the length and radius of the connecting pipe into the length correction formula to obtain the effective length of the connecting pipe, where the length correction formula is:

[0108]

[0109] Where r is the radius of the connecting pipe, and L′1 is the effective length of the connecting pipe;

[0110] Substitute the radius of the connecting pipe into the cross-sectional area calculation formula to obtain the cross-sectional area of ​​the connecting pipe, where the cross-sectional area calculation formula is:

[0111] S=πr 2

[0112] Where S is the cross-sectional area of ​​the connecting pipe;

[0113] Substitute the second noise frequency, the effective length of the connecting pipe, and the cross-sectional area of ​​the connecting pipe into the second silencing frequency formula to obtain the resonance cavity volume of the intake resonator, where the second silencing frequency formula is:

[0114]

[0115] Wherein, f2 is the second noise frequency, and V is the resonance cavity volume of the intake resonator.

[0116] In this embodiment, the connecting pipe length L1 and the connecting pipe radius r are substituted into the length correction formula to obtain the connecting pipe effective length L′1; the connecting pipe radius r is substituted into the cross-sectional area calculation formula to obtain the connecting pipe cross-sectional area S; subsequently, the second noise frequency f2, the connecting pipe effective length L′1 and the connecting pipe cross-sectional area S are substituted into the third silencer frequency formula to calculate the resonance cavity volume V of the intake resonator.

[0117] Step S402, determining the equivalent area of ​​the resonant cavity according to the volume of the resonant cavity, the length of the connecting pipe and the total length of the branch pipes.

[0118] In this embodiment, the equivalent area of ​​the resonant cavity is determined based on the volume of the resonant cavity, the length of the connecting pipe, and the total length of the branch pipes determined in the above steps.

[0119] Furthermore, in one embodiment, step S402 includes:

[0120] Substitute the volume of the resonant cavity, the length of the connecting pipe, and the total length of the branch pipe into the equivalent area calculation formula to obtain the equivalent area of ​​the resonant cavity, where the equivalent area calculation formula is:

[0121]

[0122] Where S' is the equivalent area of ​​the resonant cavity.

[0123] In this embodiment, the resonance cavity volume V, the connecting pipe length L1 and the total length L3 of the branch pipes are substituted into the equivalent area calculation formula to calculate the resonance cavity equivalent area S′.

[0124] Furthermore, in one embodiment, the radius of the connecting pipe is greater than the radius of the main pipe of the intake resonator and smaller than the diameter of the main pipe.

[0125] In this embodiment, the specific value of the connection pipe radius is set according to actual needs, but must meet the requirement that the connection pipe radius is larger than the main pipe radius of the intake resonator and smaller than the main pipe diameter.

[0126] In this embodiment, the first noise frequency, the second noise frequency and the third noise frequency to be optimized are determined, wherein the first noise frequency is greater than or equal to the preset frequency, the third noise frequency is greater than the first noise frequency, and the second noise frequency is less than the preset frequency; the length of the connecting pipe of the intake resonator is determined according to the first noise frequency; the total length of the branch pipes of the intake resonator is determined according to the third noise frequency, wherein the total length of the branch pipes is greater than the length of the connecting pipe; the volume of the resonance cavity of the intake resonator and the equivalent area of ​​the resonance cavity are determined according to the length of the connecting pipe, the total length of the branch pipes, the radius of the connecting pipe and the second noise frequency. Through this embodiment, the length of the connecting pipe, the total length of the branch pipes, the volume of the resonance cavity and the equivalent area of ​​the resonance cavity of the intake resonator are determined based on the three noise frequencies to be optimized, thereby realizing the optimization of multiple noise frequencies through a single intake resonator.

[0127] In a third aspect, an embodiment of the present invention further provides an intake resonator design device.

[0128] In one embodiment, referring to Figure 3 , Figure 3 Schematic diagram of the functional modules of an embodiment of the air intake resonator design device of the present invention. Figure 3 As shown, the intake resonator design device includes:

[0129] A first determination module 10 is used to determine a first noise frequency, a second noise frequency and a third noise frequency to be optimized, wherein the first noise frequency is greater than or equal to a preset frequency, the third noise frequency is greater than the first noise frequency, and the second noise frequency is less than the preset frequency;

[0130] A second determination module 20, configured to determine a connecting pipe length of an intake resonator according to a first noise frequency;

[0131] A third determination module 30, for determining the total length of the branch pipe of the intake resonator according to the third noise frequency, wherein the total length of the branch pipe is greater than the length of the connecting pipe;

[0132] The fourth determination module 40 is used to determine the resonance cavity volume and the resonance cavity equivalent area of ​​the intake resonator according to the length of the connecting pipe, the total length of the branch pipe, the radius of the connecting pipe and the second noise frequency.

[0133] Furthermore, in one embodiment, the second determining module 20 is configured to:

[0134] Substitute the first noise frequency into the first silencing frequency formula to obtain the connecting pipe length of the intake resonator, where the first silencing frequency formula is:

[0135]

[0136] Wherein, f1 is the first noise frequency, c is the speed of sound, and L1 is the length of the connecting pipe of the intake resonator.

[0137] Furthermore, in one embodiment, the third determining module 30 is configured to:

[0138] Substitute the third noise frequency into the third muffler frequency formula to obtain the total length of the branch pipe of the intake resonator, where the third muffler frequency formula is:

[0139]

[0140] Wherein, f3 is the third noise frequency, c is the speed of sound, L3 is the total length of the branch pipe of the intake resonator, and n is a positive integer.

[0141] Furthermore, in one embodiment, the fourth determining module 40 is configured to:

[0142] Determine the resonance cavity volume of the intake resonator according to the length of the connecting pipe, the radius of the connecting pipe and the second noise frequency;

[0143] The equivalent area of ​​the resonant cavity is determined based on the volume of the resonant cavity, the length of the connecting pipe and the total length of the branch pipe.

[0144] Furthermore, in one embodiment, the fourth determining module 40 is configured to:

[0145] Substitute the length and radius of the connecting pipe into the length correction formula to obtain the effective length of the connecting pipe, where the length correction formula is:

[0146]

[0147] Where r is the radius of the connecting pipe, and L′1 is the effective length of the connecting pipe;

[0148] Substitute the radius of the connecting pipe into the cross-sectional area calculation formula to obtain the cross-sectional area of ​​the connecting pipe, where the cross-sectional area calculation formula is:

[0149] S=πr 2

[0150] Where S is the cross-sectional area of ​​the connecting pipe;

[0151] Substitute the second noise frequency, the effective length of the connecting pipe, and the cross-sectional area of ​​the connecting pipe into the second silencing frequency formula to obtain the resonance cavity volume of the intake resonator, where the second silencing frequency formula is:

[0152]

[0153] Wherein, f2 is the second noise frequency, and V is the resonance cavity volume of the intake resonator.

[0154] Furthermore, in one embodiment, the fourth determining module 40 is configured to:

[0155] Substitute the volume of the resonant cavity, the length of the connecting pipe, and the total length of the branch pipe into the equivalent area calculation formula to obtain the equivalent area of ​​the resonant cavity, where the equivalent area calculation formula is:

[0156]

[0157] Where S' is the equivalent area of ​​the resonant cavity.

[0158] Furthermore, in one embodiment, the radius of the connecting pipe is greater than the radius of the main pipe of the intake resonator and smaller than the diameter of the main pipe.

[0159] Among them, the functional implementation of each module in the above-mentioned intake resonator design device corresponds to the various steps in the above-mentioned intake resonator design method embodiment, and its functions and implementation processes will not be repeated here one by one.

[0160] In a fourth aspect, an embodiment of the present invention further provides a readable storage medium.

[0161] An intake resonator design program is stored on the readable storage medium of the present invention, wherein when the intake resonator design program is executed by a processor, the steps of the intake resonator design method as described above are implemented.

[0162] Among them, the method implemented when the intake resonator design program is executed can refer to the various embodiments of the intake resonator design method of the present invention, and will not be repeated here.

[0163] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0164] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0165] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for a terminal device to execute the methods described in each embodiment of the present invention.

[0166] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for designing an intake resonator, characterized in that: The intake resonator design method comprises: Determine a first noise frequency, a second noise frequency, and a third noise frequency to be optimized, wherein the first noise frequency is greater than or equal to a preset frequency, the third noise frequency is greater than the first noise frequency, and the second noise frequency is less than the preset frequency; Substitute the first noise frequency into the first silencing frequency formula to obtain the connecting pipe length of the intake resonator, where the first silencing frequency formula is: Wherein, f1 is the first noise frequency, c is the speed of sound, and L1 is the length of the connecting pipe of the intake resonator; Substitute the third noise frequency into the third muffler frequency formula to obtain the total length of the branch pipe of the intake resonator, where the third muffler frequency formula is: Wherein, f3 is the third noise frequency, c is the speed of sound, L3 is the total length of the branch pipe of the intake resonator, n is a positive integer, and the total length of the branch pipe is greater than the length of the connecting pipe; Substitute the length and radius of the connecting pipe into the length correction formula to obtain the effective length of the connecting pipe, where the length correction formula is: Where r is the radius of the connecting pipe, L ′ 1 is the effective length of the connecting pipe; Substitute the radius of the connecting pipe into the cross-sectional area calculation formula to obtain the cross-sectional area of ​​the connecting pipe, where the cross-sectional area calculation formula is: S＝πr 2 Where S is the cross-sectional area of ​​the connecting pipe; Substitute the second noise frequency, the effective length of the connecting pipe, and the cross-sectional area of ​​the connecting pipe into the second silencing frequency formula to obtain the resonance cavity volume of the intake resonator, where the second silencing frequency formula is: Wherein, f2 is the second noise frequency, V is the resonance cavity volume of the intake resonator; Substitute the volume of the resonant cavity, the length of the connecting pipe, and the total length of the branch pipe into the equivalent area calculation formula to obtain the equivalent area of ​​the resonant cavity, where the equivalent area calculation formula is: Where S' is the equivalent area of ​​the resonant cavity.

2. The air intake resonator design method according to claim 1, characterized in that: The connecting pipe radius is greater than the main pipe radius of the intake resonator and smaller than the main pipe diameter.

3. An intake resonator design device, characterized in that: The intake resonator design device comprises: A first determination module, used to determine a first noise frequency, a second noise frequency, and a third noise frequency to be optimized, wherein the first noise frequency is greater than or equal to a preset frequency, the third noise frequency is greater than the first noise frequency, and the second noise frequency is less than the preset frequency; The second determination module is used to substitute the first noise frequency into the first muffler frequency formula to obtain the connecting pipe length of the intake resonator, wherein the first muffler frequency formula is: Wherein, f1 is the first noise frequency, c is the speed of sound, and L1 is the length of the connecting pipe of the intake resonator; The third determination module is used to substitute the third noise frequency into the third muffler frequency formula to obtain the total length of the branch pipe of the intake resonator, wherein the third muffler frequency formula is: Wherein, f3 is the third noise frequency, c is the speed of sound, L3 is the total length of the branch pipe of the intake resonator, n is a positive integer, and the total length of the branch pipe is greater than the length of the connecting pipe; The fourth determination module is used to substitute the length of the connecting pipe and the radius of the connecting pipe into the length correction formula to obtain the effective length of the connecting pipe, wherein the length correction formula is: Where r is the radius of the connecting pipe, L ′ 1 is the effective length of the connecting pipe; Substitute the radius of the connecting pipe into the cross-sectional area calculation formula to obtain the cross-sectional area of ​​the connecting pipe, where the cross-sectional area calculation formula is: S＝πr 2 Where S is the cross-sectional area of ​​the connecting pipe; Substitute the second noise frequency, the effective length of the connecting pipe, and the cross-sectional area of ​​the connecting pipe into the second silencing frequency formula to obtain the resonance cavity volume of the intake resonator, where the second silencing frequency formula is: Wherein, f2 is the second noise frequency, V is the resonance cavity volume of the intake resonator; Substitute the volume of the resonant cavity, the length of the connecting pipe, and the total length of the branch pipe into the equivalent area calculation formula to obtain the equivalent area of ​​the resonant cavity, where the equivalent area calculation formula is: Where S' is the equivalent area of ​​the resonant cavity.

4. An air intake resonator design device, characterized in that: The intake resonator design device includes a processor, a memory, and an intake resonator design program stored in the memory and executable by the processor, wherein when the intake resonator design program is executed by the processor, the steps of the intake resonator design method as described in claim 1 or 2 are implemented.

5. A readable storage medium, characterized in that: The readable storage medium stores an intake resonator design program, wherein when the intake resonator design program is executed by a processor, the steps of the intake resonator design method according to claim 1 or 2 are implemented.

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