COLUMBUS, OH – Working with Ford Motor Co. engineers, a team of researchers at Ohio State University designed a T-shaped aluminum-pipe adapter that mates with engine intake ducts to facilitate the study of airflow whistles. With this tool, the researchers were able to reduce engine whistle noise by 30 decibels. Researchers used a Ford 5.4L SOHC V-8 to study the problem of engine whistle. The reduction was enough to make the whistle inaudible in vehicle interiors. Ahmet ...

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