Fuel injection unit and fuel feeding arrangement

A fuel injection unit for assembly to a cylinder head and for injecting first and second fuel to a cylinder of an internal combustion piston engine, the fuel injection unit comprising:

• a first fuel feeding section in the fuel injection unit for injecting a liquid alcohol fuel to the internal combustion engine, the first fuel feeding section having an injection valve, in which the fuel injection valve in the first fuel feeding section comprises a fuel handling section and a control section,
• and a second fuel feeding section in the fuel injection unit, separate from the first fuel feeding section, for injecting a liquid fuel to the internal combustion engine, the second fuel feeding section having an injection needle,
• a pressure accumulator in the first fuel feeding section arranged within a body of the injection unit,
• the fuel handling section arranged to handle the introduction and metering the liquid alcohol fuel into the combustion chamber by at least one control needle in the fuel injection valve, and
• the control section being a hydraulic control section fluidly separated from the fuel handling section,
• wherein the fuel injection unit comprises at least two successive body parts, wherein the first fuel section extends from the first body part to the second body part, and wherein a crossover location of the first fuel section between the first body part to the second body part comprises a first sealing system, and the first sealing system is surrounded by a sealing chamber connectable to a source of sealing liquid when in use,
• and the sealing chamber is further connected to a needle guide of the first fuel section.