CN201778859U

CN201778859U - Muffler for light vehicle

Info

Publication number: CN201778859U
Application number: CN2010202876116U
Authority: CN
Inventors: 高培海; 刘强; 白术勇; 任怀勤
Original assignee: ZHUCHENG HAIDEWEI MACHINE CO Ltd
Current assignee: ZHUCHENG HAIDEWEI MACHINE CO Ltd
Priority date: 2010-08-10
Filing date: 2010-08-10
Publication date: 2011-03-30
Anticipated expiration: 2020-08-10

Abstract

The utility model discloses a muffler for a light vehicle, which is characterized in that both ends of a shell body are meshed with a first end cover and a second end cover; the inner edge wall of one end of the shell body is provided with sound-absorbing material; a first partition board, a second partition board and a third partition board are arranged in the shell body; the second partition board and the third partition board are provided with second inner insertion pipes; and the first partition board and the second partition board are provided with first inner insertion pipes. Through the setting, the muffler for the light vehicle effectively eliminates the baseband noise and some noise with special frequency of an engine and achieves very good application effect in actual loading application.

Description

A kind of light-duty silencer for automobile

Technical field

The utility model belongs to automobile exhaust muffler, particularly relates to a kind of exhaust silencer that uses on light-duty vehicle that utilizes interference and resonance principle to eliminate the noise.

Background technique

At present, existing exhaust exhaust silencer mainly adopts the resistance exhaust silencer structure of pipeline section expansion and cross-sectional constriction, utilize sound wave in the variation of abrupt change of cross-section place owing to acoustic reactance, some sound wave reflects back to sound source, and the not outlet by silencing apparatus, thereby reach the purpose of noise elimination, but this silencing apparatus is when using on some Light-duty Vehicle, the shortcoming of indivedual strong noise frequency contents can not be effectively eliminated in existence.

Summary of the invention

The purpose of this utility model is to provide a kind of interference of sound wave, existing wideband noise elimination feature that resonance principle is formed utilized can carry out the impedance composite exhaust silencer that emphasis is eliminated the noise at certain frequency (as the motor fundamental frequency) again.

The technical solution of the utility model is: be occluding with first end cap and second end cap at the two ends of housing, one end inner wall of housing is provided with sound absorbing material, be provided with first dividing plate, second partition and the 3rd dividing plate in enclosure interior, on first dividing plate, second partition and the 3rd dividing plate, be provided with suction tude and steam outlet pipe, second partition and the 3rd dividing plate are provided with second interpolation pipe, and first dividing plate and second partition are provided with first interpolation pipe.

By above setting, the utility model has effectively been eliminated the fundamental frequency noise of motor and the noise of some characteristic frequency in actual entrucking is used, obtained good effect.

Description of drawings

Now in conjunction with the accompanying drawings the utility model is described further.

Fig. 1 is the utility model structural representation

1, first end cap 2, suction tude 3, first interfere hole 4, housing 5, sound absorbing material 6, first dividing plate 7, second to interfere hole 8, first interpolation pipe 9, second partition the 10, the 3rd to interfere hole 11, the 3rd dividing plate 12, second end cap 13, steam outlet pipe 14, second interpolation pipe among the figure

Embodiment

As shown in Figure 1, the utility model is occluding with first end cap 1 and second end cap 12 at the two ends of housing 4, one end inner wall of housing 4 is provided with sound absorbing material 5, be provided with first dividing plate 6, second partition 9 and the 3rd dividing plate 11 in enclosure interior, on first dividing plate 6, second partition 9 and the 3rd dividing plate 11, be provided with suction tude and steam outlet pipe, second partition 9 and the 3rd dividing plate 11 are provided with second interpolation pipe, 14, the first dividing plates 6 and second partition 9 is provided with first interpolation pipe 8.

Noise enters the 4th chamber through suction tude 2, realize that expansion is eliminated the noise for the first time, there is partial noise to interfere hole 3 in the way from first, second interferes hole 7 and the 3rd to interfere hole 10 to enter first, two, three chambeies, the noise that enters the 4th chamber is after realizing that the one-level expansion is eliminated the noise, enter second interpolation pipe 14, through the 3rd chamber the time, realize quadratic extension and resonant silencing, interfere the noise in hole 10 to be interfered simultaneously with from the 3rd, eliminate the noise of part characteristic frequency, then enter second chamber and realize three expansion noise eliminations, and with interfere the noise in hole 7 to be interfered from second, eliminate the noise of part characteristic frequency, noise after three expansions is during through the aperture on first interpolation pipe 8, because the effect of aperture, realize the elimination of partial noise, enter first chamber through first interpolation pipe 8 then, realize four expansions, interfere the noise in hole 3 to be interfered simultaneously with from first, eliminate the noise of part characteristic frequency, and because the part high-frequency noise is eliminated in the effect of sound absorbing material on the inner walls, at last, noise is discharged silencing apparatus from steam outlet pipe 13.

The utility model has made full use of the efficient noise elimination effect of RESONANT CAVITY MUFFLER, the higher component frequency of noise contribution is carried out emphasis eliminate the noise, and effectively reduces exhaust sound, has obtained the good actual application effect.

Claims

1. light-duty silencer for automobile, it is characterized in that: be occluding with first end cap and second end cap at the two ends of housing, one end inner wall of housing is provided with sound absorbing material, be provided with first dividing plate, second partition and the 3rd dividing plate in enclosure interior, on first dividing plate, second partition and the 3rd dividing plate, be provided with suction tude and steam outlet pipe, second partition and the 3rd dividing plate are provided with second interpolation pipe, and first dividing plate and second partition are provided with first interpolation pipe.