Efficient and environment-friendly automobile muffler and sound elimination method thereof
A car muffler, environmental protection technology, applied in the direction of muffler, machine/engine, engine components, etc., can solve the lack of muffler and other problems, achieve high sound absorption coefficient, overcome moisture absorption, strong noise reduction effect
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[0029] Such as Figure 1 to 3 Shown. The present invention discloses a high-efficiency environmentally friendly automobile muffler, which comprises an outer cylinder 2 and a sound absorption cavity arranged in the outer cylinder 2. A perforated air inlet pipe 10 with an array of air holes distributed at both ends is arranged in the sound absorption cavity. The central part of the perforated intake pipe 10 is provided with an intake chamber partition 11;
[0030] Taking the air inlet chamber partition 11 as the boundary, the sound absorbing cavity is divided into an air inlet cavity 12-1 surrounded by a primary foam aluminum sound absorbing panel 12 and an intermediate cavity 8 — surrounded by a secondary aluminum foam sound absorbing panel 8 1; The outer casing of the secondary foamed aluminum sound-absorbing panel 8 is provided with a middle cavity outer tube 9;
[0031] The outer edge of the mouth of the perforated intake pipe 10 is snap-connected with the outer...
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