| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel supply system that can prevent wrong determination of an abnormal state where an excessive water content is included regardless of a state where water included in fuel has no abnormality and that can securely detect that water is abnormally included in a fuel which is being supplied while fuel is flowing.SOLUTION: A water detection device 50 includes: a device casing 51 having an inflow port 52 to which fuel to be supplied to a supply target flows in, an outflow port 53 from which the fuel to be supplied to the supply target flows out and a detection flow passage 54 which communicates the inflow port and the outflow port with each other and in which a flow direction conversion section 55 is formed in the middle thereof; a water reservoir section 70 formed on a flow passage wall 59 of the flow direction conversion section 55 in the detection flow passage as a recess 72 opened toward a fuel inflow direction to the flow direction conversion section; and water detector 80 having a sensor section 81 accommodated in the water reservoir section to detect the amount of the water content included in fuel present within the water reservoir section. An opening 71 of the recess of the water reservoir section is arranged in a fuel supply route while facing horizontally. |
