Multifunctional muffler structure

Abstract

The invention relates to a multifunctional muffler structure. The multifunctional muffler structure comprises a barrel body, an inner partition plate A, an inner partition plate B, an inner partition plate C and an inner partition plate D are arranged in the barrel body, and an air inlet muffler pipe, a middle muffler pipe and two air outlet muffler pipes are fixed in the barrel body; the four inner partition plates divide the barrel body into five muffler cavities. The air outlet muffler pipes are arranged symmetrically, so that exhaust back pressure is favorable for being reduced, and then the work efficiency of an engine is ensured; because siphons are arranged on the air outlet muffler pipes, water accumulating in a muffler can be eliminated by the utilization of the pressure difference between an inlet and an outlet of the muffler and on the basis of the siphon principle, the muffler is prevented from rusting, and the service life and the using reliability of the muffler are ensured; due to the combination of the multiple muffler cavities and the muffler components, exhaust noise is reduced substantially, and the riding comfort of a whole vehicle is improved; the application of a stamped shell makes the muffler be more beautiful and more elegant and fully show the feel of modern science and technology.

Description

technical field

[0001] The invention belongs to the technical field of automobile exhaust mufflers, in particular to an exhaust muffler used for an urban SUV. Background technique

[0002] The exhaust muffler of the off-road vehicle in the early stage adopts an impedance composite passive single tailpipe muffler. During the vehicle test, the exhaust back pressure at the rated power point (5200rpm) reached 65.3kPa, which exceeded the design value (≤60kPa) by 5.3kPa, and the idle speed condition (800rpm ) The exhaust port fixed noise is 63.2dB, which is 3.2dB higher than the target value (≤60dB). Moreover, there is a large amount of water inside the muffler, which requires high corrosion resistance of the muffler and seriously reduces the service life of the muffler.

[0003] There are usually three ways to reduce exhaust noise: one is to design a very complex internal structure, such as designing Helmtz mufflers and quarter-wavelength tubes for different frequencies, and the...

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