Smoke-removing muffler for agricultural automobile

Abstract

The invention provides a smoke-removing muffler for an agriculture automobile (including a tractor, a tricycle and a light truck), which belongs to the technical field of automobile engineering and consists of a smoke-removing (smoke-filtering) part and a muffling part. The muffling part comprises an impedance compound muffler which is composed of a reactive muffler and a dissipative muffler and has excellent muffling effect for high, middle or low frequency noise, wherein the reactive muffler adopts the structure of a perforated pipe, an intubation tube, a micro perforated plate and a perforated plate, utilizes the abrupt change of cross section of a pipeline or a by-pass resonant cavity to lead the sound wave of certain frequency to carry out sound wave reflection and interference on the cross section with abrupt change of acoustic impedance and lead the energy loss of the sound wave, thereby achieving the purpose of muffling; and the dissipative muffler achieves the purpose of muffling by means of sound-absorbing material which is arranged on the tube wall and has high-temperature resistance and good sound-absorbing effect, and the dissipative muffler has the advantages of high-temperature resistance, strong heat resistance, corrosion resistance, excellent penetrating property, high capability of absorbing impact energy, low cost and simple fabrication process. The smoke-removing (smoke-filtering) part selects a wire mesh or wire cotton as smoke-filtering material, is arranged at the rear end of the whole muffler and has the effects of impact resistance, interception and soot particles absorbing. The smoke-removing muffler is applicable to the smoke-removing muffler with integrated smoke-removing (smoke-filtering) and muffling for the agricultural automobile, has double functions of smoke-removing (smoke-filtering) and muffling, has compact structure, low cost and convenient maintenance and is applicable to production requirements of farmers.

Description

technical field [0001] The invention relates to a smoke purifier and muffler for agricultural vehicles (including tractors, tricycles, light trucks, etc.), in particular to a muffler for agricultural vehicles (including tractors, tricycles, light trucks, etc.) that integrates smoke purification (filtering smoke) and noise reduction, and belongs to vehicles field of engineering technology. Background technique [0002] Small diesel engines used in agricultural vehicles (including tractors, tricycles, light trucks, etc.) have the characteristics of simple structure, low manufacturing cost, easy to use, technical level suitable for the vast rural areas of our country, and low purchasing power, so they are widely used. However, its high noise, strong pulsation, ear-piercing, and poor sound quality seriously affect people's physical and mental health and hinder people's normal work and rest. Most of the mufflers designed in the past are resistant exhaust mufflers, which are bett...

AI Technical Summary

Problems solved by technology

At present, agricultural vehicles have not adopted external smoke removal measures, but only adopted a relatively simple exhaust muffler, which will cause great pollution to the environment.

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