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Active exhaust silencer using an oscillating butterfly valve

Active exhaust silencer using an oscillating butterfly valve

Carl Q. Howard, Damien L.L. Leclercq, Morgan Hunter (2016)

ICSV23: Proceedings of 23rd International Congress on Sound and Vibration, Athens, Greece, July 10-14

Abstract:

An active exhaust silencer was developed for a reciprocating petrol engine using an oscillating butterfly valve. The active silencer was installed on a Mitsubishi V6 petrol engine loaded by an eddy current dynamometer and was able to withstand exhaust gas temperatures of 500C. Experimental results showed that the oscillating butterfly valve was able to simultaneously attenuate tonal noise at the 1x and 2x cylinder firing frequencies.

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Published Document - NOT available for public access
Manuscript - available for public access

 

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