| 摘要 |
A gas fuel feed valve (X) capable of sufficiently deriving engine performance, comprising a nozzle (1) for feeding gas fuel to an inlet manifold (M2), a retainer (2) directed to the nozzle (1) as seen in the direction of a valve stem (m), and a seat (3) interposed between the nozzle (1) and the retainer (2) for movement in the direction of the valve stem (m) toward and away from the nozzle (1). The retainer (2) is provided with an introducing passageway (22) for introducing an approximately half of the fuel gas from a gas feed manifold (M1) to the nozzle-side surface (3a) of the seat through each opening hole (32) in the seat (3). The nozzle (1) is provided with an introducing passageway (11) for introducing the remaining approximately half of the fuel gas to the nozzle-side surface of the seat (3). Each introducing passageway (11, 22) is adapted to feed gas fuel to the inlet manifold (2) during opening when the seat moves away from the nozzle (1). While fuel gas is guided radially outwardly of the seat (3) through the introducing passageway (22) of the retainer, it is guided radially inwardly of the seat (3) through the introducing passageway (11) of the nozzle.
|
