Patent ID: 8156742

Claim:
A fuel injection device in a turbomachine, comprising: at least one pump connecting a fuel tank to flow rate control means supplying fuel injectors through the intermediary of a pressurization and cut-off valve, said valve comprising a piston that can be moved inside a cylindrical body between a closed position and an open position for feeding the injectors, means for applying the fuel pressure at the flow rate control means to the piston for closing the injector supply as long as said fuel pressure is lower than a first predetermined threshold, and means for applying a counter-pressure on the piston for closing the injector supply, as from the idle speed of the turbomachine, thereby creating a second pressurization threshold, such second threshold exceeding the first threshold and a minimal pressure value for controlling equipment with variable geometry of the turbomachine, wherein the cylindrical body of the valve comprises an orifice connected to the inlet of the pump, this orifice being axially spaced away from the means for applying the counter-pressure defining the second pressurization threshold, in order to permanently apply a pressure at the pump inlet on the piston and to define the first pressurization threshold.