Patent ID: 7712577
Filing Date: 2010-05-11
Classification: F02M

Abstract:
1. An air induction housing for providing an airflow to an internal combustion engine and sound attenuation of engine intake noise, the internal combustion engine requiring a predetermined maximum airflow rate, said air induction housing comprising: a housing having a predetermined configuration, said housing comprising a perforated wall free of covering, wherein a plurality of perforations are formed in said perforated wall, said plurality of perforations collectively providing a predetermined intake opening size for said housing, said housing further comprising an engine air intake connection, wherein all of the airflow to the engine intake connection passes exclusively through said plurality of perforations; each perforation of said plurality of perforations has an area and said plurality of perforations has a distribution selected in relation to said configuration which, in combination, reflects the engine intake noise interior to said housing; and the airflow through the area of each said perforation is less than substantially Mach 0.125 at the maximum airflow rate of the internal combustion engine.