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    • 8. 发明授权
    • Onboard refueling vapor recovery detector
    • 车载加气蒸汽回收检测器
    • US6044873A
    • 2000-04-04
    • US227142
    • 1999-01-08
    • Zane A. Miller
    • Zane A. Miller
    • B67D7/04B65B31/00
    • B67D7/0478Y10S141/01
    • An apparatus is provided for detecting the presence of a vehicle equipped with an onboard refueling vapor recovery system. The apparatus has a body that is equipped with an inlet fluid port and an outlet fluid port that is in fluid communication with the inlet fluid port. The body also has an inlet vapor port that is in fluid communication with the outlet fluid port. The apparatus further includes a vacuum chamber that is located within the body, and that is in fluid communication with the vapor port and the outlet port. The apparatus has a vaccum activated detecting switch coupled to the body that is in fluid communication with the vacuum chamber. A vacuum-generating nozzle is coupled within the body between the inlet port and the vacuum chamber. Fuel may be provided to the inlet port and routed through the nozzle to create a vacuum within the chamber. The vapor port may be coupled to a vapor return line, and the switch can be adjusted to detect the pressure difference occurring when air is returned through the vapor port rather than fuel vapor. This sensed difference can then be used to adjust the operation of a Phase II vapor recovery system.
    • 提供一种用于检测装备有车载加油蒸汽回收系统的车辆的存在的装置。 该装置具有配备有入口流体端口和与入口流体端口流体连通的出口流体端口的主体。 主体还具有与出口流体端口流体连通的入口蒸气端口。 该装置还包括位于主体内并且与蒸气端口和出口端口流体连通的真空室。 该装置具有耦合到与真空室流体连通的主体的真空激活检测开关。 真空产生喷嘴在入口和真空室之间的主体内连接。 燃料可以被提供到入口端口并被引导通过喷嘴以在腔室内产生真空。 蒸气端口可以耦合到蒸气返回管线,并且可以调节开关以检测当空气通过蒸气端口返回而不是燃料蒸汽时发生的压力差。 然后,该感测到的差异可用于调节II相蒸气回收系统的操作。