| 摘要 |
In an evaporative-fuel emission preventing apparatus, a differential pressure regulating valve provided in the course of a passageway for connecting a fuel tank and a canister includes a valve section and a case section including a conduit for connecting the differential pressure regulating valve and the canister. The valve section has a communicating hole for connecting the low and high pressure sections of the differential pressure regulating valve. Liquid fuel flowing into the low pressure section is returned to the fuel tank via the communicating hole. When fueling, the quantity of air in the communicating hole can be controlled by a convex portion. Further, the conduit has a communicating hole for connecting the conduit and the fuel tank. When an interlocking valve formed in the valve section moves with an opening operation of the valve section and is separated from the communicating hole, liquid fuel within the conduit can be returned to the fuel tank via the communicating hole. Further, a gas-liquid separating member is formed integrally with the valve section. Even when the differential pressure regulating valve inadvertently opens due to running vibration of the vehicle or the like, an opening portion of the differential pressure regulating valve is closed by the gas-liquid separating member, which makes it possible to prevent the liquid fuel from being introduced into the canister.
|
