Enhancement type silencer

Abstract

The invention discloses an enhancement type silencer which comprises a cylinder body, a resonance chamber and expansion chambers. The resonance chamber and the expansion chambers are located in the cylinder body. Each expansion chamber is provided with an engine exhaust gas inlet and provided with a flow guide cover used for guiding engine exhaust gas entering the expansion chamber towards the direction of the resonance chamber. The flow guide covers can guide the engine exhaust gas entering the expansion chambers so that the gas flow of the engine exhaust gas can be prevented from directly acting on the side walls of the expansion chambers; meanwhile, the flow guide covers guide the gas flow towards the direction of the resonance chamber so that the phenomenon that the engine exhaust gas does not flow smoothly in the expansion chambers can be avoided, it is ensured that the exhaust resistance is reduced, and the power losses of an engine are reduced; and in addition, the flow guide covers play a guiding role in sound waves, the resonance efficiency and strength of the sound waves are improved to some extent, it is ensured that the silencing effect is better, the silencing strength is greatly improved, exhaust noise is lowered easily, and noise pollution is avoided.

Description

technical field [0001] The invention relates to an engine exhaust gas treatment device, in particular to an enhanced muffler. Background technique [0002] The engine converts the internal energy of the fuel into mechanical energy to perform external work by burning fuel oil. After the fuel is burned, the engine exhaust gas will be discharged into the atmosphere. During the exhaust process, a muffler is usually required to reduce the noise caused by the engine exhaust gas discharge process. , and according to different sound wave frequencies, different mufflers can be used to deal with noise, such as resistive mufflers, resistive mufflers or composite mufflers. The low frequency is processed, and the middle and low frequency sound waves are processed through the combination of the expansion chamber and the resonance chamber. In order to coordinate the volume of the muffler and adapt to the multi-cylinder exhaust structure, usually in the circumferential side wall of the cyli...

AI Technical Summary

Problems solved by technology

[0002] The engine converts the internal energy of the fuel into mechanical energy to perform external work by burning fuel oil. After the fuel is burned, the engine exhaust gas will be discharged into the atmosphere. During the exhaust process, a muffler is usually required to reduce the noise caused by the engine exhaust gas discharge process. , and according to different sound wave frequencies, different mufflers can be used to deal with noise, such as resistive mufflers, resistive mufflers or composite mufflers. The low frequency is processed, and the middle and low frequency sound waves are processed through the combination of the expansion chamber and the resonance chamber. In order to coordinate the volume of the muffler and adapt to the multi-cylinder exhaust structure, usually in the circumferential side wall of the cylindrical muffler. The exhaust gas is inserted into the exhaust pipe from the radial direction of the muffler, so that the engine exhaust gas passes through the expansion chamber and the exhaust chamber for multi-stage muffler, and because the temperature of the engine exhaust gas discharged from the engine block is usually relatively high, the airflow enters the muffler from the air inlet And directly collided with the inner wall of the muffler cylinder, it is very easy to cause the local temperature of the muffler to be high, which is easy to cause burns. Large, it increases the power loss of the engine, which is not conducive to the improvement of engine efficiency, and the noise reduction effect is poor, especially not conducive to resonance noise reduction

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