Abstract
This paper describes the problem of reducing car noise level. It is shown that in the Russian Federation the rate of passenger cars with operating life of 10-20 years is 28% of vehicle fleet and the noise level of these cars usually doesn’t meet active sanitary standards. The authors performed a range of experimental researches of the noise emissions of the passenger car individual elements – engine, gearbox, propeller shaft, differential, exhaust system. Taking into account the results of an experimental research and having created the mathematical model for computation of the expected noise in passenger car cabin, the researchers present a method of probabilistic computational evaluation of car noise. This method allows to set required characteristics of noise level of vehicles at the engineering stage.
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