| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas fuel supply valve capable of sufficiently exhibiting performance of an engine. SOLUTION: This gas fuel supply valve is provided with a nozzle 1 for supplying gas fuel to an intake air manifold M2, a retainer 2 opposed from the valve stem (m) direction to the nozzle and a seat 3 being movably interposed in the valve stem direction between the nozzle and the retainer and contacting and separating to the nozzle. The retainer is provided with an introducing passage 22 for introducing gas fuel of an almost half from a gas supply manifold M1 to a nozzle side surface 3a of the seat via respective opening holes 32 of the seat. The nozzle is provided with an introducing passage 11 for introducing the gas fuel of a residual half to the nozzle side surface of the seat. The respective introducing passages supply the gas fuel to the intake air manifold at opening time when the seat separates from the nozzle. While the gas fuel is introduced outside in the radial direction of the seat via the introducing passage of the retainer, the gas fuel is introduced inside in the radial direction of the seat via the introducing passage of the nozzle.
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