Abstract: The evaporative emission treatment device comprises a monolith concentrically disposed within a shell, and having one or more sealing agents concentrically disposed about the monolith and in between the monolith and housing. The shell comprises a first shell portion having an inlet portion at one end and a connection element disposed at the opposing end, and a second shell portion having an outlet portion at one end and a connection element disposed at the opposing end. The shell can also include structural features to prevent fluid leakage, enhance fluid flow, enable attachment to other evaporative emission system components, enable mounting to a vehicle, and internally seal the monolith and sealing agents.

Abstract: The evaporative emission treatment device comprises a monolith concentrically disposed within a shell, and having one or more sealing agents concentrically disposed about the monolith and in between the monolith and housing. The shell comprises a first shell portion having an inlet portion at one end and a connection element disposed at the opposing end, and a second shell portion having an outlet portion at one end and a connection element disposed at the opposing end. The shell can also include structural features to prevent fluid leakage, enhance fluid flow, enable attachment to other evaporative emission system components, enable mounting to a vehicle, and internally seal the monolith and sealing agents.

Abstract: Onboard refueling vapor recovery canister for a gasoline-powered vehicle including an unequally-divided carbon bed, a vent solenoid, and a high-capacity, self-cleaning vent filter. Integral configuration of the canister reduces its size and also increases the allowable carbon volume over prior art canisters, permitting use of a lower grade carbon at a significant cost savings while meeting all working capacity requirements. The filter box has an air inlet port and contains a high-efficiency filter wrapped around a feature enclosing a solenoid for opening and closing the air flow through the canister. Wrapping the filter increases the available surface area by more than 50% over that of a flat filter. Outward air flow during refueling partially backflushes the filter, thereby extending the useful life of the filter media.