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Exhaust silencer for automobiles with output volume of 2.0L

An exhaust muffler and automobile technology, applied in the direction of exhaust devices, noise reduction devices, machines/engines, etc., can solve the problems of noise pollution, noise transmission to the outside world, etc., to increase structural strength, stabilize internal structure, and reduce exit noise Effect

Inactive Publication Date: 2014-06-04
LUOYANG INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the muffler performance of most exhaust mufflers depends on the general expansion cavity structure, and the sound waves are directly radiated from the wall of the main cavity to the outside world, which directly causes most of the noise to be directly transmitted to the outside world, causing noise pollution

Method used

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  • Exhaust silencer for automobiles with output volume of 2.0L
  • Exhaust silencer for automobiles with output volume of 2.0L
  • Exhaust silencer for automobiles with output volume of 2.0L

Examples

Experimental program
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Effect test

Embodiment Construction

[0016] Such as Figure 1-4 As shown, an exhaust muffler for a 2.0L automobile comprises a main cavity 1, an intake pipe 2, an exhaust pipe 3 and an intermediate pipe 4, and the main cavity 1 is composed of a cavity wall 11, a front cover 12 and a rear The end cover 13 surrounds; the front partition 5 and the rear partition 6 set in the main cavity 1 divide the main cavity 1 into a front cavity 14, a middle cavity 15 and a rear cavity 16, and the front partition 5 is provided with There is at least one air hole; the front end cover 12 and the rear end cover 13 are double-layered, and there is a gap between the inner and outer layers; the air intake pipe 2 for connecting the exhaust pipe of the automobile passes through the front cavity 14 and is directly inserted into the middle cavity 15. The air inlet end is connected with a flange 21, and the air outlet end is provided with a gradually flared mouth 22, and there is at least one air hole with a diameter of 6-8mm on the pipe w...

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PUM

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Abstract

An exhaust silencer for automobiles with output volume of 2.0L comprises a main cavity, an air inlet pipe, an exhaust pipe and an intermediate pipe. The main cavity is composed of cavity walls, a front end cover and a rear end cover by encircling, a front partition plate and a rear partition plate are arranged in the main cavity to partition the main cavity into a front cavity, a middle cavity and a rear cavity, the air inlet pipe used for connection with an automobile exhaust pipe penetrates through the front cavity to be directly inserted into the middle cavity, a flange plate is connected to an air inlet end of the air inlet pipe, an air outlet end of the air inlet pipe is provided with a gradually-flared port, and a portion, positioned in the front cavity, of the air inlet pipe is provided with air holes. The front end and the rear end of the intermediate pipe extend into the front cavity and the rear cavity respectively. An opening of one end, extending into the rear cavity, of the intermediate pipe is closed. The pipe wall of the portion, extending into the middle cavity, of the intermediate pipe is provided with air holes. One end of the exhaust pipe extends into the front cavity while the other end of the exhaust pipe sequentially penetrates through the rear cavity and the rear end cover to be communicated with the outside. One end, extending into the front cavity, of the exhaust pipe is provided with a gradually-shrunk port. An exhaust tail section in a gradually expanded structure is arranged at the pipe tail positioned outside. The exhaust silencer is capable of effectively weakening exhaust noises and is reasonable in design and promising in application prospect.

Description

technical field [0001] The invention relates to an automobile muffler, in particular to an exhaust muffler for an automobile with a displacement of 2.0L. Background technique [0002] With the improvement of industrialization, the scope of noise hazards is expanding, and the cost of energy use is getting higher and higher. Traffic noise has become the most important noise source in the current urban environmental noise. Exhaust noise is the main noise source of automobiles and their engines. The muffler is the most effective noise reduction method commonly used to control exhaust noise. In my country, cars with a displacement of 2.0L have a relatively high share in cities. In the prior art, the muffler performance of most exhaust mufflers depends on the general expansion cavity structure, and the sound waves are directly radiated from the main cavity wall to the outside world, which directly causes most of the noise to be directly transmitted to the outside world, causing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N13/00F01N1/00
Inventor 赵海军马福贵王国华王海霞常家东程广伟
Owner LUOYANG INST OF SCI & TECH
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