Fuel injection device for gas engine and gas engine device equipped with the same

摘要

PROBLEM TO BE SOLVED: To improve reliability of a gas engine device usable while switching between a gas operation mode using a fuel gas and a liquid operation mode using a liquid fuel.SOLUTION: In a fuel injection device for a gas engine, a pre-mixed gas of a fuel gas and air is introduced into a cylinder of the gas engine, and a liquid fuel is introduced into the cylinder to form ignition flame for burning the pre-mixed gas, on the other hand, only the liquid fuel can be burned without supplying the fuel gas. The fuel injection device includes fuel supply means including a main valve 36a mechanically or electrically controlled, and supplying the liquid fuel as a main fuel, and auxiliary fuel supply means including an auxiliary valve 36b electrically controlled, and supplying the liquid fuel as an auxiliary fuel. The auxiliary fuel is supplied from the auxiliary valve 36b into the cylinder through the main valve 36a to form the ignition flame.