Wavelength tube silencer, silencing system and automobile
A wavelength tube and muffler technology, which is applied in the direction of mufflers, machines/engines, gas passages, etc., can solve the problems of sound wave muffler, insufficient installation space and multiple different frequency bands, etc., and achieve the effect of low cost
Active Publication Date: 2021-11-16
DONGFENG LIUZHOU MOTOR
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Problems solved by technology
[0003] The main purpose of the present invention is to propose a wavelength tube muffler, a muffler system and a car, aiming to solve the current problem of not being able to use multiple different The problem of sound wave cancellation in the frequency band
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[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0034] It should be noted that if there are directional indications involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture. If the specific posture changes , then the directional indication changes accordingly.
[0035] In addition, if there are descriptions involving "first", "second" and so o...
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The invention discloses a wavelength tube silencer, a silencing system and an automobile. The wavelength tube silencer comprises a silencing pipeline, wherein the silencing pipeline is used for extending in parallel with a main pipeline; the extension direction of the silencing pipeline is a first direction; the silencing pipeline is provided with a first end and a second end which are oppositely arranged in the first direction; the first end and the second end are arranged in a closed manner; and multiple silencing holes are formed in one side of the silencing pipeline at intervals in the first direction, communicate with one another, and are used for communicating with the main pipeline. The multiple silencing holes are combined to eliminate sound waves with multiple frequencies; and compared with the prior art that multiple single-hole wavelength tubes are overlapped, the wavelength tube silencer provided by the scheme has the advantages that the number of required wavelength tubes is smaller, and under the condition that the installation space is limited, the wavelength tube silencer provided by the invention can eliminate more frequency bands of different sound waves and is lower in cost.
Description
technical field [0001] The invention relates to the technical field of mufflers, in particular to a wavelength tube muffler, a muffler system and an automobile. Background technique [0002] In the internal noise reduction components of automobile exhaust mufflers, the wavelength tube is a common noise reduction component structure. It is known that the noise reduction principle of the wavelength tube is that when the sound wave enters the branch pipe from the main pipe, the sound wave is reflected back to the main pipe by the closed end. The sound waves of these frequencies and the sound waves of the same frequency in the main pipe cancel each other due to the opposite phase, so as to achieve the purpose of noise reduction. To silence the sound waves of different frequency bands, multiple wavelength tubes are required correspondingly. Therefore, the overall structure may be too large, but the actual installation space may be too small to accommodate multiple wavelength tube...
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IPC IPC(8): F01N1/08F01N1/00F01N13/00
CPCF01N1/082F01N1/00F01N13/00F01N2470/02
Inventor 毛德龙莫伟树许忠杰缪宣和曾宪民黄东杰
Owner DONGFENG LIUZHOU MOTOR