Fuel injector comprising - a closing element comprising a conical flow guiding surface downstream of a contact area, the flow guiding surface of the closing element extending to an outer edge of the closing element, - a cartridge with an edge at a downstream end of the cartridge and with a flow guiding surface, the flow guiding surface of the cartridge comprising a valve seat and being arranged adjacent to the downstream end of the cartridge in an angle with respect to a longitudinal axis of the cartridge greater than that of the flow guiding surface of the closing element, the contact area of the closing element being arranged for being in sealing contact with the valve seat in a closed position of the closing element, the contact area of the closing element and the valve seat of the flow guiding surface of the cartridge form a gap for passing of all fuel in the opening phase of the injector towards the outer edge of the closing element and the edge of the cartridge, the fuel injector being characterised in that it further comprises: - a deflection element arranged at the flow guiding surface of the closing element, the deflection element being dimensioned to deflect a fuel flow only during a first time period directly following a beginning of each opening phase of the injector during which the fuel flow is guided by the flow guiding surface of the closing element from a first flow direction upstream the deflection element to a second flow direction differing from the first flow direction such that the fuel is injected in the second flow direction, an angle of the second flow direction with respect to a longitudinal axis of the injector being greater than that of the first flow direction, and in that the flow guiding surface of the cartridge is arranged for taking over a guidance of the fuel flow from the flow guiding surface of the closing element during a second time period directly following the first time period such that the fuel is injected in a third flow direction differing from the second flow direction. - a closing element comprising a conical flow guiding surface downstream of a contact area, the flow guiding surface of the closing element extending to an outer edge of the closing element, - a cartridge with an edge at a downstream end of the cartridge and with a flow guiding surface, the flow guiding surface of the cartridge comprising a valve seat and being arranged adjacent to the downstream end of the cartridge in an angle with respect to a longitudinal axis of the cartridge greater than that of the flow guiding surface of the closing element, the contact area of the closing element being arranged for being in sealing contact with the valve seat in a closed position of the closing element, the contact area of the closing element and the valve seat of the flow guiding surface of the cartridge form a gap for passing of all fuel in the opening phase of the injector towards the outer edge of the closing element and the edge of the cartridge, - a deflection element arranged at the flow guiding surface of the closing element, the deflection element being dimensioned to deflect a fuel flow only during a first time period directly following a beginning of each opening phase of the injector during which the fuel flow is guided by the flow guiding surface of the closing element from a first flow direction upstream the deflection element to a second flow direction differing from the first flow direction such that the fuel is injected in the second flow direction, an angle of the second flow direction with respect to a longitudinal axis of the injector being greater than that of the first flow direction,