| 摘要 |
There is provided a fuel gas supply device for a gas engine in which a fuel gas flows along the axial direction on the outer circumferential side of an inlet valve rod, and is supplied to an inlet path in a cylinder head. The device is characterized in that fuel gas injection holes to be opened and closed with the movement of a projection are provided in the inner circumferential surface of a sleeve into which the projection is slidably fitted, the projection being provided at the inlet valve rod, having a larger outer diameter than the inlet valve rod and having a portion concentric with and in parallel with the inlet valve rod, and in that the fuel gas injection holes are each formed in an ellipse, and the opening upper and lower end region part of the ellipse is situated within the movement region of the projection. |
