This article takes two formula student racing powertrains as the research object. In order to meet the C-weighted sound level limitation required by the rules, a one-dimensional flow combustion model of the engine was established, and a muffler design was developed based on this, while taking into account the dynamic performance of the engine. For the four-cylinder turbocharged engine with a displacement of 600 ml, a through-impedance compound muffler is used to eliminate mid-high frequency noise and mid-low frequency band noise. Meet the design requirements by optimizing the volume of the two chambers. For a single-cylinder supercharged engine with a displacement of 690 ml, a front expansion chamber and a rear dual chamber impedance compound muffler are used to eliminate low-band noise and mid-high frequency noise. Meet the design requirements by optimizing the position and the volume of the expansion chamber and the length of the main muffler insertion tube. Finally, the actual noise spectrum was analyzed using audio acquisition equipment, and various designs and calculations were verified.
Study on Structure Optimization of Muffler of Formula Student Racing Car
Lect. Notes Electrical Eng.
2022-01-13
17 pages
Article/Chapter (Book)
Electronic Resource
English
Study on Structure Optimization of Muffler of Formula Student Racing Car
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