Servizio Comunitario di Informazione in materia di Ricerca e Sviluppo - CORDIS

Active noise control for exhaust systems

The main emphasis of the work was to determine the most significant noise sources in the area of motors and exhaust systems and for which the implementation of an anti-noise system is considered to be useful.

The second task was to simulate the noise sources and find out in which way the noise reduction could archive. Work was carried on an active silencer using a specific transducer able to stand high flow velocity and high temperature. The aim of this active silencer is to be able to control very low frequency noises by using the flow energy with a flap fixed inside the exhaust pipe and driven by an electrical rotation engine.

Relevant prototypes have been manufactured and successfully tested.

Reported by

DEUTSCHE MONTAN TECHNOLOGIE GMBH
Am Technologiepark 1
ESSEN
Germany