GASEOUS FUEL SUPPLY DEVICE

摘要

When executing combustion control utilizing compressed natural gas (CNG) injectors (14), a first shutoff valve (54) is opened. On condition that the first shutoff valve (54) has been opened, the presence/absence of a fuel leakage from a high-pressure passage (56) is determined on the basis of a drop in the detection value (high-pressure-side detection value (PH)) of the internal pressure of the high-pressure passage (56). Insertion of a CNG filling nozzle into a filling port (68) causes a phenomenon in which the high-pressure-side detection value (PH) increases and then drops. When the rising rate of the high-pressure-side detection value (PH) is equal to or greater than a prescribed rate, a central processing unit (CPU) (72) stops the determination of the presence/absence of an abnormality of fuel leakage for a prescribed period of time.