| 摘要 |
An engine gas fuel supply apparatus is provided that includes a gas fuel injection valve (10) formed from a valve housing (42) having at one end a fuel inlet hole (76) communicating with a gas fuel tank (9), a nozzle member (51) provided at the other end of the valve housing (42) and having a valve seat (53) and a nozzle hole (54) running through a central part of this valve seat (53), and a valve body (55) slidably fitted into a guide hole (49) of the valve housing (42) and via one end face opening and closing the nozzle hole (54) in cooperation with the valve seat (53), wherein a heating chamber (15) for heating the valve seat (53) and the periphery of the guide hole (49) is disposed in the area around the valve housing (42), and cooling, water for an engine (E) is made to pass through the heating chamber (15) as a heat source therefor. This enables the valve seat and a sliding part of the valve body of the gas fuel injection valve to be heated at an early stage after starting the engine, the viscosity of oil attached thereto to be decreased, and the gas fuel injection valve to be operated properly at an early stage. |
