Patents Assigned to Wärtsilä Nsd Oy AB
  • Patent number: 6439193
    Abstract: An injection valve arrangement which is to be connected with a common rail of a fuel feeding system of a combustion engine comprises a valve body. A first valve needle and a first piston arrangement functionally coupled thereto and a second valve needle and a second piston arrangement functionally coupled thereto are inside the valve body. The needle valves are arranged operationally in series so that the first needle valve is connected to feed pressure of the common rail and is arranged to open always first. The second needle valve controls the injection of the fuel into a cylinder of the engine.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: August 27, 2002
    Assignee: Wärtsilä Nsd Oy AB
    Inventor: Kai Lehtonen