Fahrzeug-Betankungsventil

摘要

A refueling valve assembly (10) for a motor vehicle includes a body (16) connected to the upper wall of a fuel tank (12) in vertical depending relationship thereon. The body (16) has a cover (22) with a vapor exit passage (54) adapted to be connected to a fuel vapor storage canister (14), and a portion (18) depending from the cover that has vapor exit ports (53) formed therein communicating with the fuel tank interior adjacent the upper wall of the fuel tank (12) A vent tube (50) has one end connected to the vapor exit passage (54) and an opposite end communicating with the vent exit ports (53) and defining a valve seat (46) that is closed by a float valve (34, 36) during vehicle fill. The vapor exit ports (53) remain open until the float valve is completely closed and the vapor exit ports (53) are spaced higher than the valve seat (46) to separate liquid fuel particles from vapor flow. In one embodiment a baffle (128) is located on the body (100) between the valve seat (118) and the vapor exit ports (102) to form a liquid trap. In another embodiment a secondary vent valve (140) on the cover is connected to the vapor exit passage. In still another embodiment a pressure transducer port (164) is formed in the cover.