Actively-controlled exhaust muffler of autonomously-inverting internal-combustion engine

Abstract

The invention discloses an actively-controlled exhaust muffler of an autonomously-inverting internal-combustion engine, which belongs to the field of machines, is used for muffling and exhausting an internal-combustion engine and solves the problems that the traditional active muffler structure is complicated so as to barrier the actual use and the like. The actively-controlled exhaust muffler consists of an actively-controlled muffling pipeline loop and a jet exhaust moving mechanism, wherein the muffling pipeline loop comprises a joint, an air cylinder exhaust guide pipe, two branch air delivery pipes connected to the guide pipe, telescopic pipes connected to the branch air delivery pipes, exhaust nozzle seats connected to the telescopic pipes and a nozzle seat moving slidaway. The exhaust nozzle moving mechanism comprises a chain wheel, chains which are arranged on the chain wheel and connected with the nozzle seats, a drive motor, an internal combustion engine revolution sensor and a micro controller. The invention has the benefits of intervening for muffling at an exhaust outlet by using self-inverting acoustic wave of noise and raw noise acoustic wave and having simple structure, low power consumption and reliable operation in comparison with the traditional muffling technical scheme.

Description

technical field [0001] The invention belongs to the field of machinery, and in particular relates to an exhaust muffler for an internal combustion engine that utilizes noise self-inversion sound waves and original noise sound waves to be attenuated at the exhaust outlet. Background technique [0002] Currently, there are two types of known exhaust mufflers for internal combustion engines: passive mufflers and active mufflers. Passive mufflers are further divided into resistive mufflers, resistive mufflers and impedance composite mufflers. Generally speaking, the passive muffler has the advantages of wide frequency band, large amount of noise reduction, and no need for control, so it is widely used, but its disadvantages are also very obvious, that is, in order to achieve the target amount of noise reduction, it is necessary to adopt the labyrinth arrangement of interpolated pipes. Cloth, the exhaust resistance is large, resulting in high exhaust back pressure of the interna...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a kind of self-inverting internal combustion engine exhaust muffler with active control, which is used for muffler and exhaust of internal combustion engine, and overcomes the large power loss of existing passive mufflers and the large power consumption of active mufflers, and the complex structure of active mufflers As well as many problems that hinder the actual use,

Images