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Muffler of double-section expansion chamber of automobile

A technology of expansion chamber and muffler, which is applied in the direction of intake muffler, muffler, machine/engine, etc., to achieve the effect of wide muffler frequency range

Active Publication Date: 2011-08-10
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The main disadvantage of the single-section expansion chamber muffler is that there are many pass frequencies, that is, when l=1 / 2 wavelength or its integer multiples, the pass loss is zero. In order to eliminate these pass frequencies that are not muffled, such as figure 2 As shown, the method of internal intubation is generally used

Method used

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  • Muffler of double-section expansion chamber of automobile
  • Muffler of double-section expansion chamber of automobile
  • Muffler of double-section expansion chamber of automobile

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Embodiment Construction

[0037] Such as image 3 As shown, the expansion chamber is composed of two left and right expansion chambers 1 and 2, and the inlet and outlet of each expansion chamber are provided with insertion tubes, wherein the inlet of the left expansion chamber and the outlet of the right expansion chamber share the same insertion tube 3. The double-section expansion chamber is in the shape of a cuboid as a whole, and the cross-section is a square. The cross-section of the expansion chamber is open at the center, and the diameters of the insertion tubes corresponding to the inlet and outlet of the expansion chamber are the same.

[0038] l 1 = 2l 2 , where l 1 is the length of the left expansion chamber 1, l 2 is the length of the right expansion chamber 2.

[0039] l 3 =1 / 2l 1 , l 4 =1 / 2l 2 , l 2 = l 3 = 2 l 4 = 2 l 5 = 4 l 6 , where l 3 is the length of the insertion tube at the inlet of the left expansion chamber in the expansion chamber, l 4 is the length of the inse...

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Abstract

The invention relates to a muffler of a double-section expansion chamber for developing induction noise of an automobile, which can provide a wider anechoic frequency range. The invention adopts the technical scheme that the muffler of the double-section expansion chamber of the automobile is provided with an expansion chamber and is characterized in that the expansion chamber comprises a left expansion chamber and a right expansion chamber; an inlet and an outlet of each expansion chamber are both provided with inserting pipes, wherein the inlet of the left expansion chamber and the outlet of the right expansion chamber share one inserting pipe.

Description

technical field [0001] The invention relates to a double-section expansion chamber muffler for the development of automobile intake noise. Background technique [0002] Resistant mufflers are commonly used in automotive air intake systems. The principle of the resistant muffler is that when the sound wave passes through the muffler, the acoustic impedance changes, and part of the sound energy is reflected back to the sound source, reducing the transmitted sound energy. Resistant mufflers are composed of tubes and chambers with abrupt interfaces, each of which has its own natural frequency. When sound waves containing various frequency components enter the first short tube, only the sound waves of certain frequencies near the natural frequency of the first mesh can pass through the mesh to reach the second short tube, while the sound waves of other frequencies It is impossible for sound waves to pass through the mesh, and they can only be reflected back and forth in the sma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N1/02F02M35/12
Inventor 何铁平李明江王继靳江涛
Owner CHERY AUTOMOBILE CO LTD
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