Acoustic attenuator for an engine booster

摘要

An acoustic attenuator 20 for an engine booster such as a turbocharger 10 for an engine 4 is disclosed in which the acoustic attenuator 20 includes an attenuator chamber 28 in which is located at least one absorption media 140. The acoustic attenuator 20 is located adjacent an inlet port of the turbocharger 10 so as to attenuate any acoustic pressure waves by dissipative reaction with the absorption media 140 before they have chance to reach other components of a low pressure supply system 50 for the engine 4.

主权项

1. A low pressure air supply system for an engine having a booster, comprising:
a low pressure atmospheric air inlet; an air compressor of the booster; an air filter filtering air drawn in via the low pressure air inlet; a low pressure air conduit connected to the air filter and; an acoustic attenuator, connected at an inlet end to the low pressure air conduit, located close to an inlet port of the air compressor of the booster, comprising an attenuator body and an attenuator chamber, wherein the attenuator chamber extends around only a portion of the attenuator body and is operatively connected to an air flow passage defined by the attenuator body via a number of transfer ports formed by elongate apertures with long edges parallel to an air flow path through the air flow passage.