Fuel circuit of a motor 371 a return valve of the fuel controlled differential by a pressure of a low pressure pump of the fuel system

摘要

The present invention relates to a fuel circuit of an engine of an aircraft comprising a fuel tank (10); a system for engine fuel (20) comprising a low pressure pump (21) and a high pressure pump (22), a pipe (2) of the return of fuel that is connected to the engine fuel (20); a valve (30) of the fuel is arranged to switch between an open position and a closed position, as a function of the differential pressure of the low pressure pump (21), said valve being able to block, in the closed position, the conduit for return of fuel (2) and to put into communication, in the open position, the return pipe of the fuel with the fuel tank (10).