Patent ID: 7255838

Claim:
An apparatus with nano-sized platinum black and oxygen-rich ceramic powder for filtering the incoming air into an internal combustion engine, the apparatus comprising: a) a base constructed as a rectangular frame, the base having a flange projecting from the bottom inner edge thereof at right angles, a top rim of the base being formed with an outer and an inner frame; b) a lower metal net lying on the flange of the base; c) a ceramic filter element containing (ZrO 2 ), Al 2 O 3 and kaolinite, and a means for activating oxygen molecules in the air incoming into the internal combustion engine, said ceramic filter element being a rigid block filter made by foaming oxygen-rich ceramic powder and provided with a plurality of pass-through holes, nano-sized platinum black being applied to the surface of the pass-through holes; d) a lower cotton filter accommodating the ceramic filter element and positioned together therewith on the lower metal net; e) an upper cotton filter disposed on the surface of the ceramic filter element; f) an upper metal net lying on the upper cotton filter, the upper metal net being enclosed by the inner frame of the base; and g) an upper frame having an external and an internal rim that are respectively engaged with the outer and the inner frame of the base.