Fuel injector of an internal combustion engine and internal combustion engine

An internal combustion engine, comprising:

• cylinders configured to ignite with help of a second fuel a first fuel for combusting the first fuel in the cylinders;
• and
• a fuel injector for each cylinder comprising:
• a first nozzle needle moveably guided in a first needle guide, which interacts with first fuel injection orifices such that the first nozzle needle, depending on its position either opens or blocks a first fuel flow of the first fuel, which is a relatively less ignitable fuel, through the first fuel injection orifices;
• a second nozzle needle moveably guided in a second needle guide, which interacts with second fuel injection orifices such that the second nozzle needle, depending on its position, either opens or blocks a second fuel flow of the second fuel, which is a relatively ignitable fuel and which serves for igniting the first fuel, through the second fuel injection orifices;
• wherein the first fuel injection orifices are arranged along a pitch circle contour and the second fuel injection orifices are arranged along a circular contour such that a distance between a centre point of the pitch circle contour and a centre point of the circular contour is greater than a sum of a radius of the pitch circle contour and a radius of the circular contour, and
• wherein in an installed state of the fuel injector the second fuel injection orifices project deeper or further into an internal combustion chamber of a respective cylinder than the first fuel injection orifices.