Exhaust silencer for automobiles with output volume of 2.0L

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...

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

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