Host: The Japan Society of Mechanical Engineers
Name : Dynamics and Design Conference 2016
Date : August 23, 2016 - August 26, 2016
This research is refer to reduce aerodynamic noises at the exhaust systems of the truck equipped with a diesel engine. This paper, focuses on a butterfly valve in the exhaust systems. This research clarifies the property of aerodynamic noise generated by the butterfly valve during an opening operation. The noise was measured by changing the opening time. The experimental results show frequency characteristics of the noise is strongly related to the angle of the butterfly valve. Also, to slow down the opening operation of the butterfly valve, effect on the suppression of aerodynamic noise.
