To provide a fuel supply device preventing troubles caused by emulsified fuel remaining in a pipe line during stop.
The emulsified fuel supply device is provided with: a pipe line 9 supplying emulsified fuel from a mixing tank 14 of emulsified fuel to a combustion chamber 2 and having branch parts A, B, C from the upstream side; a pipe line 11 merged with the pipe line 9 in the branch part C branched from the pipe line 9 and positioned downstream of the branch part A; a circulating pump P provided on the pipe line 11; and a pipe line 13 branched in the branch part B between the branch part A and branch part C and connected to the mixing tank 14. When supply of the emulsified fuel to the combustion chamber 2 is stopped, the emulsified fuel supply device achieves a circulation mode selected from a mode (1) in which the emulsified fuel is supplied from the mixing tank 14 via the pipe line 9, branch part A, pipe line 11, branch part C, pipe line 9, branch part B and pipe line 13 and returned to the mixing tank 14 and a mode (2) in which the emulsified fuel is supplied from the branch part A via the pipe line 11 and branch part C, passed through the pipe line 9 and returned to the branch part A.
HIROHARA YOSHITERU
HIRAMATSU NOBUYUKI
MASHUKO KK
FUKUTANI YASUO
Takanobu Nakaetsu