Fuel injection valve for internal combustion engine, has valve pin with valve sealing surface, which cooperates with valve seat, where surface or seat is provided with coating that exhibits high friction value when mating with steel
摘要
<p>The valve has a valve pin (5) with a valve sealing surface (7) at its end. The surface cooperates with a valve seat (9) through a linear movement and controls the fuel flow from a pressure chamber to an injection opening. The fuel flow is released if the pin is detached from the seat. The valve sealing surface or a valve seat is provided with a coating (30), which exhibit a high friction value when mating with steel.</p>
