Patent ID: 7163574

Claim:
An air filter assembly, comprising: an air filter housing configured to receive an air filter therein, the air filter housing having an inlet and an outlet; and a hydrocarbon filter element secured to a portion of the air filter housing, said hydrocarbon filter element comprising a hydrocarbon adsorbent member capable of adsorbing hydrocarbons from fluid flow past said hydrocarbon filter element at a first flow rate and adsorbed hydrocarbons being released into fluid flow past said hydrocarbon filter element at a second flow rate, said second flow rate being higher than said first flow rate, and said hydrocarbon filter element being positioned above a direct fluid flow path between said inlet and said outlet, wherein said hydrocarbon filter element is positioned such that a surface of said hydrocarbon filter element is in a facing spaced relationship with respect to a surface of said housing and another surface of said hydrocarbon filter element is in a facing spaced relationship with respect to an air filter disposed in said air filter housing.