Being fuel line and the management mannered null fuel vapor pressure management device which

摘要

Fuel line and the method of supplying the fuel to the internal combustion engine. Fuel line, the fuel tank, the intake manifold, the fuel vapor collection canister, has the purge valve and the fuel vapor pressure management device (20). The fuel vapor pressure management device, the housing (30), has the pressure operation device (40) and the switch (70). The housing is connected by the fuel vapor collection canister, demarcates the internal chamber (31). The pressure operation device separates the internal chamber from into the 1st part which is connected to the canister and the 2nd part which is connected to the ventilation port (38). The pressure operation device, the poppet (52) and the poppet has with the seal (50) which is engaged. 1st vacuum exists in the canister in regard to the ventilation port, when the seal is a 1st deformation state, the pressure operation device has 1st position relationship. When the seal becomes 2nd deformation state, the 1st flow of the fluid occurs from the air hole with 2nd position relationship. When the seal is a state before the becoming deformed, from the canister the 2nd flow of the fluid is allowed to the air hole by 3rd position relationship.