| 摘要 |
<p>A fuel vapor control valve (20) comprising a housing (26) fitted with an inlet port(28A) connectable to a fuel tank and an outlet port (30A) connectable to a fuelvapor recovery device. The inlet port and the outlet port are in flow communication viaa first valve controlled passage admitting fuel vapor flow in a direction fromthe inlet port to the outlet port only when pressure within the fuel tank exceeds athreshold. A second valve controlled passage admits vapor flow in an opposite directionfrom the outlet port to the inlet port only when pressure within the fuel tank dropsbellow pressure at the fuel vapor recovery device.</p> |
