| 摘要 |
<p>PURPOSE: To conduct vaporized fuel in a fuel tank to a canistor to treat it by conducting the vaporized fuel on the low-pressure side of a differential pressure regulating valve to the canistor to treat it, and opening time differential pressure regulating valve, before the fuel tank is opened to the atmosphere. CONSTITUTION: A fuel tank 10 for car, and a canistor 16 are connected through a differential pressure regulating valve 18. The low-pressure side 18a of the differential pressure regulating valve 18 is connected to the canistor 16 through a conduit pipe 22, a communication valve 28, and a conduit pipe 24. Then, when a fuel lid 26 is opened to open the communication valve 28, vaporized fuel on the low-pressure side 18a of the differential pressure regulation valve is conducted to the canistor 16. At this time, differential pressures are generated between the low-pressure side 18a of the differential pressure regulating valve and the high-pressure side 18b of the differential pressure regulating valve, and thus the differential pressure regulating valve 18 is opened. As a result, vaporized fuel in the fuel tank 10 is conducted to the canistor 16 and treated.</p> |
