Device and method for recycling hydrocarbon vapors of I.C.E. vehicles

摘要

The invention is directed to a novel method and means for recycling to the carburetor the hydrocarbon vapors emitted by a motor vehicle of the type comprising between the fuel tank and the pipe connecting the air filter to the carburetor a container or canister for adsorbing the hydrocarbons. In the method of this invention, the hydrocarbons thus adsorbed by a suitable material contained in the canister are desorbed by using a stream of air under pressure from a pump, for example the anti-pollution pump provided for injecting fresh atmospheric air into the exhaust system of the vehicle.