Unlock instant, AI-driven research and patent intelligence for your innovation.

Silencer of motor vehicle

A muffler and motor vehicle technology, applied in the direction of machines/engines, noise reduction devices, mechanical equipment, etc., can solve the problems of not being able to eliminate noise in a large range and multiple frequencies, and narrow application range, etc., to achieve noise elimination, simple and reliable structure, and noise reduction powerful effect

Pending Publication Date: 2018-06-22
重庆固发机械制造有限责任公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional mufflers for motor vehicles are usually considered to eliminate noise in a specific frequency range, but they cannot eliminate a wide range of multi-frequency noise well, and their scope of application is narrow

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Silencer of motor vehicle
  • Silencer of motor vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] a muffler, such as figure 1 As shown, it includes a muffler main body 1, a lug 2 arranged outside the muffler main body 1, a front-end air pipe 3 arranged at one end of the muffler main body 1, and a tailpipe 4 arranged at the other end of the muffler main body 1. The muffler main body 1 passes through the front end The vent pipe 3 is connected with the exhaust pipe, and the end of the front vent pipe 3 away from the exhaust pipe extends into the muffler main body 1, and the muffler main body 1 is provided with a partition 5, and the partition 5 connects the muffler main body 1 It is divided into a front chamber 6 facing the side of the front-end air pipe 3 and a rear chamber 7 facing the side of the tail pipe 4. The partition plate 5 is provided with a first air pipe 8, and the first air pipe 8 is far away from all The inner side of one side of the front end air pipe 3 is provided with a second air pipe 9 having a diameter smaller than the first air pipe 8, and the end...

Embodiment 2

[0028] On the basis of any one of the schemes in the embodiment 1, such as figure 2 As shown, one end of the tailpipe 4 extends into the rear cavity 7 and its end extending into the rear cavity 7 is blocked by the second blocking cover 16, and the tail pipe 4 extends into the side of the rear cavity 7. The circumferential direction of the wall is provided with a plurality of evenly spaced third ventilation hole groups 17, and the outside of the third ventilation hole group 17 is also provided with a second ventilation cover 18 surrounding the third ventilation hole group 17, so A plurality of evenly spaced fourth vent hole groups 19 are provided on the side wall of the second vent cover 18 .

[0029] Compared with Embodiment 1, in this embodiment, two air hole groups are added, and the noise reduction capability is further improved.

[0030] As a further optimized solution, the diameter of the holes in the fourth vent hole group 19 is not larger than that of the third vent h...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a silencer of a motor vehicle. The silencer comprises a silencer body, a supporting lug, a front end ventilating pipe and a tail pipe. A separation plate is arranged in the silencer body and divides the silencer body into a front cavity and a rear cavity, and a first ventilating pipe is arranged on the separation plate. A second ventilating pipe is arranged on the inner side of the first ventilating pipe, and the tail end of the second ventilating pipe are blocked by a first blocking cover. A plurality of evenly spaced first ventilating hole sets are formed in the sidewall of the second ventilating pipe. A first ventilating cover surrounding the second ventilating pipe is further arranged on the outer side of the second ventilating pipe, and evenly spaced second ventilating hole sets are arranged on the side wall of the first ventilating cover. A mesh barrel with meshes is arranged on the inner wall of the rear cavity, and a sound absorption material is arranged between the mesh barrel and the inner wall of the rear cavity. According to the silencer, multiple layers of small holes are formed to cooperate with the sound absorption material to eliminate noise, noise with the wide-range frequency can be eliminated, the structure is simple and reliable, and high noise reducing capacity is achieved.

Description

technical field [0001] The invention belongs to the technical field of mufflers, and in particular relates to a muffler for motor vehicles. Background technique [0002] The muffler is a device that allows airflow to pass through, but can prevent or reduce sound transmission, and is an important measure to eliminate aerodynamic noise. The muffler can block the propagation of sound waves and allow airflow to pass through, which is an effective tool for noise control. [0003] Traditional mufflers for motor vehicles are usually considered to eliminate noise in a specific frequency range, but they cannot eliminate large-scale and multi-frequency noise well, and their applicable range is narrow. Contents of the invention [0004] Aiming at the deficiencies in the prior art, the invention provides a motor vehicle muffler capable of eliminating noise in a wide range of frequencies, simple and reliable in structure, and strong in noise reduction capability. [0005] A muffler, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F01N1/10
CPCF01N1/082F01N1/10
Inventor 陈伟民柯昌木
Owner 重庆固发机械制造有限责任公司