Patent ID: 7422628
Filing Date: 2008-09-09
Classification: B01D,F02D,F02M

Abstract:
1. A system for controlling the emission of volatile hydrocarbons from an automobile engine having an intake manifold, the system including an air cleaner upstream of the engine intake manifold comprising a volatile hydrocarbon adsorber unit including a housing having an air inlet and an air outlet, said housing containing a substrate and a volatile hydrocarbon adsorber material coated on the surface of the substrate, said volatile hydrocarbon adsorber material comprising a natural zeolite, a synthetic zeolite or a mixture of a natural and a synthetic zeolite, said material further containing a binder that will cause the material to adhere to the surface of the substrate, the adsorber unit located in a conduit downstream from the air cleaner and upstream of the intake manifold, the adsorber unit being operative to control the emission of volatile hydrocarbons when the engine is shut off.