Patent ID: 9097220
Filing Date: 2015-08-04
Classification: F01N,F02M

Abstract:
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.