Sound transmission device charges engine and holds membrane so that it can vibrate about defined central pressure in induction manifold

摘要

The sound transmission device (1) consists of a hollow body (2) with at least one membrane (3) connected via a tube (4) to the induction manifold (5). The membrane reacts to air pressure variations in the induction manifold. The engine is charged and the membrane held so that it can vibrate about a defined mean pressure in the induction manifold.