Vehicle fuel system and components thereof

摘要

A fuel vapor control valve comprising a housing. The housing comprising inlet and outlet ports in flow communication via first and second valve controlled passages. The first valve controlled passage being configured to admit fuel vapor flow in a direction from the inlet port to the outlet port only when pressure at the inlet port exceeds a predetermined threshold. The second valve controlled passage being configured to admit vapor flow in a direction from the outlet port to the inlet port only when pressure at the inlet port drops below pressure at the outlet port. The fuel vapor control valve further comprising a sealing arrangement disposed at an external portion of the housing between the inlet and outlet ports.

主权项

1. A fuel vapor control valve for use with a fuel tank, said valve comprising:
a liquid fuel trap comprising a body formed with an expansion space and an entry port for allowing flow communication with the fuel tank; a fuel vapor control valve unit mounted inside the body of the a liquid fuel trap, the fuel vapor control valve unit comprising:
a housing comprising a housing portion configured to fit into the body, the housing comprising an inlet port and an outlet port in flow communication via a first controlled valve passage and a second valve controlled valve passage, the first valve controlled passage being configured to admit fuel vapor flow in a direction from the inlet port to the outlet port only when pressure at the inlet port exceeds a predetermined threshold, the second valve controlled passage being configured to admit vapor flow in a direction from the outlet port to the inlet port only when pressure at the inlet port drops below pressure at the outlet port; and a sealing arrangement configured to provide a sealing arrangement between the outlet port of the fuel vapor control valve unit and the expansion space of the liquid fuel trap, the sealing arrangement comprising a peripheral seal located between an outer wall of the housing portion of the fuel vapor control valve unit and an inner wall of the body of the liquid fuel trap.