와이어를 이용한 단순 가변 배기 밸브 구조 개발

A simple semi-active exhaust valve system by wire for cost and weight down is proposed. For this system, housing, shaft and stopper of conventional exhaust valve are removed. gate and wire are newly developed. The same NVH and backpressure performance level of the conventional exhaust valve is verified via eng bench test..A developed simple semi-active exhaust valve is expected to be used for optimal design of muffler.