Patent ID: 8042524

Claim:
An emission control device for an air induction system of an internal combustion engine, comprising: (a) a first case including an outlet-opening connected to an intake manifold of the engine; (b) a second case including an inlet-opening for the intake air; and (c) an adsorbent element positioned in a plane across the intake airflow, wherein: the adsorbent element includes an opening area such that the device has a pressure drop of less than about 1 inch H 2 O at the air flow rate of about 300 cfm and a % reduction in vapor emission of at least about 75% after one day of the vapor generation rate of about 220 mg/day, and the adsorbent element is defined by a thickness along a direction of the airflow, the thickness being less than a cross-sectional width of the opening area.