Abstract:During the internal combustion engine operation, the main noise sources are the crank train unbalance forces, the combustion phenomena, the gears coupling, the valves friction and intake and exhaust systems that radiate high noise due to air excitation of some parts resonant frequencies. A four cylinder engine intake manifold was analyzed in order to understand its contribution to the overall engine noise. An specific characteristic of this intake manifold is the presence of a resonator, which contributes to n… Show more
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