Patent ID: 6988356

Claim:
A fuel metering unit in a turbomachine, the unit being mounted between a high pressure pump which draws fuel from a fuel tank and a plurality of fuel injectors for injecting the fuel into a turbomachine combustion chamber, the unit comprising a meter which has an inlet receiving fuel for injection from a regulator valve at a pressure P 1 and has an outlet which delivers the fuel at a pressure P 2 to said plurality of injectors via a stop valve, said regulator valve comprising a hydraulic slide movable in a sheath under drive from the pressures P 1 and P 2 taken directly from the terminals of the meter and acting on two end inlets of said regulator valve on respective sectional areas S 1 and S 2 of the hydraulic slide, said slide having a first annular neck for allowing fuel to recirculate to said high pressure pump by puffing a first feed inlet of said sheath connected to an outlet of said high pressure pump into communication with a feed outlet of said sheath connected to an inlet of said high pressure pump, wherein said hydraulic slide further includes a second annular neck for providing another recirculation path to said high pressure pump by puffing a second feed inlet of said sheath connected to said inlet of the meter into communication with an auxiliary feed outlet of said sheath connected to said inlet of the high pressure pump.