Vapor control system for an engine to eliminate smog

Claim 1

In combination with the air-intake section of an internal combustion engine having a pumped lubrication system, a crankcase and a ring-type air permeable filter and hydrocarbon vapor sorber unit arranged to traverse the air-intake path and trap vapors that evaporate from the fuel system for the engine, the improvement that provides for a fresh oil coating to said sorber unit from an oil circulating system that, in turn, comprises an oil distributor means to the upper portion of said sorber unit to provide a uniform oil coating thereto, conduit means from said pumped lubrication system to said distributor means to provide oil from the crankcase to the sorber unit surface, said sorber unit having vent lines connecting thereto from the carburetor section of the internal combustion engine and from the fuel tank of the fuel system for the engine, whereby carburetor bowl losses and fuel tank losses will be entirely vented to the oil coated sorber unit for entrapment therein, an oil withdrawal passageway means interconnecting between said sorber unit and said crankcase for transferring vapor containing contacted oil from such unit, and venting means to the engine intake section from said crankcase whereby any released absorbed light hydrocarbon vapors from the oil will be introduced into said engine for combustion therein.