| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel tank structure capable of improving the detection accuracy for alcohol concentration. ! SOLUTION: A fuel tank structure 10 comprises: a case 16 built up on a bottom 12A of a fuel tank 12, and including an inlet port 20A that is provided in an upper portion in the case 16 and into which fuel FE pumped up from the fuel tank 12 is introduced and an outlet port 18A that is provided in a lower portion in the case 16 and from which the fuel FE is fed into the fuel tank 12; a concentration detection sensor 34 provided in the upper portion in the case 16 and having a capacitance changing depending on an alcohol concentration of the fuel FE introduced from the inlet port 20A; a liquid level detection sensor 42 provided below the concentration detection sensor 34, and having a capacitance changing depending on a liquid level of the fuel FE passing through the concentration detection sensor 34 and stored in the case 16; and a sensor circuit 52 electrically connected to the liq |
