FUEL INJECTION CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

摘要

This fuel injection system is provided with: first injection valves (21) that inject a fuel gas; a pressure-adjusting valve (60) that reduces the pressure of the fuel gas, which is supplied to the first injection valves (21), to a preset pressure; and a main tank stop valve (44) and a cutoff valve (45), which are disposed on the upstream side of the pressure-adjusting valve (60). If the supply pressure to the injection valves (21) exceeds a determination value (K1), a control unit (80) closes the cutoff control valves (44, 45), and switches to injection of a liquid fuel by second injection valves (22) from injection of the fuel gas by the first injection valves (21) in response to an engine load.