FUEL VALVE FOR INJECTING LOW IGNITION POINT FUEL TO COMBUSTION CHAMBER OF TURBOCHARGING TYPE LARGE TWO-STROKE SELF-IGNITION INTERNAL COMBUSTION ENGINE

摘要

PROBLEM TO BE SOLVED: To prevent ignition or lubrication even when using various kinds of fuel.SOLUTION: A fuel valve 50 of a turbocharging type large two-stroke self-ignition internal combustion engine comprises a fuel valve housing 52, a nozzle 54, a fuel inlet port 53, a working fluid port 78, a valve needle 61 slidably received in a longitudinal needle inner lumen 64, a fuel chamber 58 surrounding the valve needle 61 and opened on a valve seat 69, a pump piston 80, and a working piston 83. The pump piston 80 is accepted in a furst inner lumen 81, and is provided with a pump chamber 82 on a single side. The working piston 83 is accepted in a second inner lumen 84, and is provided with an actuation chamber 85 of the second inner lumen 84 on a single side. The pump piston 80 and the working piston 83 move together. The actuation chamber 85 is connected to a working liquid port 78. The pump chamber 82 has an outlet connected to the fuel chamber 58, and an inlet connected to the fuel inlet port 53 via a check valve 74.SELECTED DRAWING: Figure 7