| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a tank internal pressure detecting device that detects a stable tank internal pressure without reducing a fuel tank capacity, and a sealing valve opening/closing control device. <P>SOLUTION: A pressure sensor 35 is configured to detect a tank internal pressure Ptf from a fuel vapor passage 34 reaching from a fuel tank 26 to a sealing valve 36, thus, it does not reduce a capacity of the fuel tank. The pressure sensor 35 is connected to the fuel vapor passage 34 via an expansion space 34b in a chamber 34a. Accordingly, even if airflow pulsation occurs due to opening/closing of an electromagnetic valve 36a in the sealing valve 36, the airflow pulsation is attenuated in the expansion space 34b and the detected value (tank internal pressure Ptf) of the pressure sensor 35 is undisturbed. <P>COPYRIGHT: (C)2013,JPO&INPIT |
