Main silencer for air exhaust system of automotive engine

A technology of automobile engine and exhaust system, which is applied in the direction of engine components, machines/engines, mufflers, etc., can solve the problems of reducing the service life of the main muffler, failure, corrosion of the main muffler, etc., to shorten the residence time and improve the service life , to prevent the effect of direct impact

Active Publication Date: 2011-08-10
CHONGQING CHANGAN AUTOMOBILE CO LTD
View PDF4 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And because the exhaust gas discharged from the engine contains a large amount of S, N and other elements, after condensation, it will easily form weak acid to corrode the internal metal and make the muffler cotton lose its muffler effect, resulting in the main muffler being corroded and invalid
At the same time, when the high-temperature and high-pressure exhaust gas from the air inlet just enters the inner cavity of the main muffler, the pressure of a certain cavity in the main muffler instantly increases several times, dozens of times or hundreds of times to form a high-pressure cavity, causing the main muffler barrel The body vibrates and the temperature of the cylinder rises rapidly, resulting in vibration and radiation noise. The high-temperature cylinder will also heat the body and increase the

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
  • Main silencer for air exhaust system of automotive engine
  • Main silencer for air exhaust system of automotive engine
  • Main silencer for air exhaust system of automotive engine

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0013] The present invention will be further described below in conjunction with the drawings and embodiments:

[0014] Such as figure 1 , figure 2 As shown, the multi-mesh main muffler of the present invention is mainly composed of an intake pipe 1, a front cover 2, a first partition 3, a second partition 4, a rear cover 5, an exhaust pipe 6, a cylinder 7, and other components. The cylinder 7 is composed of an inner cylinder 8, a first grid layer 9, a second grid layer 10 and an outer cylinder 11. The first grid layer 9 and the second grid layer 10 are sandwiched between the inner cylinder body 8 and the outer cylinder body 11 in a form where the grids cross each other and the two layers are superimposed on each other, and the whole is formed into a cylindrical shape by wrapping and pressing In structure, the inner cylinder 8 and the outer cylinder 11 are divided into countless small space units by the first grid layer 9 and the second grid layer 10, and there is a certain gap...

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 proposes a main silencer for an air exhaust system of an automotive engine, which comprises a barrel body, an air inlet pipe, an air exhaust pipe, a medium-voltage cavity A, a low-voltage cavity B and a high-voltage cavity C; the barrel body consists of an inner barrel body, a first grid layer, a second grid layer and an outer barrel body; the first grid layer and the second grid layer are mutually crossed in a grid manner and are clamped between the inner barrel body and the outer barrel body in a two-layer superposition manner; a ventilation and drainage hole is arranged on the inner barrel body; and a drainage hole is arranged on the outer barrel body. The main silencer can prevent direct impact caused by high temperature and high pressure gas to the outer wall of the outer barrel body, reduce the vibration, the radiation noise and the effect on indoor comfort and simultaneously prevent the water accumulation generated in the inner barrel body to prevent a clapboard, an end cover, the air inlet pipe and the air exhaust pipe from being corroded by the water accumulation. Therefore, the comfort of the entire main silencer is improved, the maintenance cost of a user is saved, and the service life of the main silencer is greatly improved.

Description

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

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
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products