fuel supply unit

Abstract

To provide a fuel supply device capable of supplying oil into a delivery pipe without complicating a device configuration.SOLUTION: A fuel supply device 15 comprises a fuel tank 21, a delivery pipe 22 in which gas fuel to be supplied to a fuel injection valve 14 is stored, a supply passage 23 through which the fuel gas supplied from the fuel tank 21 to the delivery pipe 22 flows, a shut-off valve 26 provided in the supply passage 23, an oil supply device 30 that supplies oil to a downstream portion 23A of the supply passage 23, and a control unit 50. The control unit 50 executes oil supply processing during operation of an internal combustion engine 10 to close the shut-off valve 26 to stop the supply of the gas fuel to the delivery pipe 22, and to supply the oil to the downstream portion 23A by the oil supply device 30 under the situation where the pressure in the delivery pipe 22 drops.SELECTED DRAWING: Figure 1

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