Motorcycle sound eliminator

Abstract

The invention provides a motorcycle sound eliminator which is provided with a sound eliminator cylinder body (1) and an inner connecting pipe (2), wherein an inner cavity of the sound eliminator cylinder body (1) is divided into a first sound eliminating cavity (3), a second sound eliminating cavity (4), a third sound eliminating cavity (5) and a fourth sound eliminating cavity (6); the pipe wall of the rear end of the inner connecting pipe (2) is provided with a radial exhaust small hole (11); a lining cylinder (12) is arranged in the second sound eliminating cavity (4) near the inside wall of the sound eliminator cylinder body (1); and the rear end of the inner connecting pipe (2) extends into the second sound eliminating cavity (4) after penetrating through a porous plate (7) between the first sound eliminating cavity (3) and the second sound eliminating cavity (4) and is provided with a cover (14) with an airflow through hole (13). The technical scheme of the invention reduces the appearance temperature of the sound eliminator cylinder body of the motorcycle, eliminates tail gas noise and improves the intermediate and low speed performance of an engine, and people feel strong for acceleration during riding.

Description

technical field [0001] The present invention relates to motorcycle components, especially motorcycle mufflers. Background technique [0002] At present, the common structure of motorcycle mufflers equipped with CG125 and CG150 engines is as follows: figure 1 , figure 2 As shown, the muffler cylinder 1 is a single-layer structure, and the inner cavity of the muffler cylinder 1 is divided into several muffler chambers by partitions. There is a baffle at the end of the inner connection pipe 2 located in the first muffler chamber, and it is close to The pipe wall of the inner connection pipe of the baffle is provided with radial exhaust holes, the partition between the first and second anechoic chambers is a porous plate, and the rest of the anechoic chambers are communicated through the air guide pipe 9, and the gas finally Discharged from the tailpipe. [0003] The motorcycle muffler of this structure has the following defects in use: [0004] 1. Since the muffler cylinde...

AI Technical Summary

Problems solved by technology

[0004] 1. Since the muffler cylinder has a single-layer structure, the temperature of the exhaust gas discharged from the engine is very high when it flows into the muffler cylinder through the exhaust pipe. It will cause heat and discoloration of the barrel, affecting riding safety and appearance;

[0005] 2. When the exhaust gas from the engine enters the muffler cylinder, the flow rate is very high, which will generate a large excitation noise, which is an important part of the motorcycle exhaust noise;

[0006] 3. The length of the inner connecting pipe is short and the diameter is too large. When the motorcycle is running at medium and low speeds, the output of the rear wheels cannot be increased significantly with the increase of the vehicle speed. The low-speed performance of the engine is poor, and the acceleration feels weak;

[0007] 4. The number of air ducts is large, and the exhaust tail sound is relatively sharp and scattered.

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