A machine is provided having an engine system wherein at least one engine system component with an acoustic reflective surface is surrounded by a jacket configured to absorb sound from at least one sound producing device of the engine system. The jacket includes a sound absorbing material such as fibrous...http://www.google.es/patents/US7635048?utm_source=gb-gplus-sharePatente US7635048 - Sound suppression device for internal combustion engine system
Sound suppression device for internal combustion engine system
