| 摘要 |
<p>Improved fuel injection valve arrangement for a so-called dual fuel engine operated using two types of fuel, comprising a valve housing (2), which includes at least one nozzle orifce (5) opening into a combustion chamber of a cylinder in the dual fuel engine and which further includes first valve means for gaseous fuel and, independently controllable thereof, second valve means for a pre-injection fuel used for ignition of the gaseous fuel. The valve means for the gaseous fuel comprises an axially movable, cylindrical, substantially hollow valve member (3), the mantle surface of which is sealed to the valve housing (2), at least at the end part thereof located adjacent to the combustion chamber of the cylinder, and inside of which there is a separate valve means (7; 8) for the pre-injection fuel. Said end part of the valve member (3) is arranged to control the supply of gaseous fuel from inside the valve member (3) into said at least one nozzle orifice (5), said end part being designed to exhibit two sealing surfaces (10a, 10b) placed on opposite sides, in the moving direction of the valve member (3), of said at least one nozzle orifice (5) and arranged to co-operate with corresponding surfaces (11a, 11b) provided on the valve housing (2). <IMAGE></p> |
