US Patent 7353809 Evaporative emissions canister with integral liquid fuel trap

An evaporative emissions canister is used in an automotive evaporative emission system to separate liquid fuel entrained with fuel vapor and to control emission of fuel vapors to the atmosphere, the system including a fuel tank coupled to an automotive engine. The canister includes an integrally molded housing having side walls, a top wall and a bottom wall; a hydrocarbon-adsorbing material disposed therein so as to provide a vapor adsorbent chamber for adsorbing hydrocarbon fuel vapor flowing therethrough; and a liquid-fuel trap located above the vapor adsorbent chamber for separating fuel vapor and liquid fuel. A method is provided for preventing or reducing hydrocarbon emissions to the atmosphere.