Exhaust Noise Reduction in Two-Stroke Snowmobile: Development of a Mechanically Active Quarter Wave Resonator

Paper #:
  • 2015-01-2211

Published:
  • 2015-06-15
DOI:
  • 10.4271/2015-01-2211
Citation:
Santora, M. and Savage, D., "Exhaust Noise Reduction in Two-Stroke Snowmobile: Development of a Mechanically Active Quarter Wave Resonator," SAE Technical Paper 2015-01-2211, 2015, doi:10.4271/2015-01-2211.
Pages:
5
Abstract:
In the present study by the University of Idaho Clean Snowmobile Challenge (UICSC) team, the necessity, history, and research of noise reduction strategies in two-stroke snowmobile exhaust is presented. Testing and design is discussed to show the decision making process of College Design Series (CDS) teams. The UICSC CDS team is comprised of mechanical, electrical, and computer engineers. The development from static to dynamic noise cancellation is explained as a proof of concept and to further demonstrate CDS design. The study presents math models that validate the noise reduction technique. The noise reduction includes a mechanically active quarter-wave resonator (MAQR). Viability is given for the design and is presented with supporting implementation data. Control for the resonator platform is discussed. It is proven that mechanically active noise cancellation is an effective, lightweight, and simple solution to noise cancellation.
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