Fuel system for e.g. turbojet engine, of aircraft, has fuel return circuit connected to high pressure portion of main circuit situated downstream of high pressure pump, where circuit returns fuel towards fuel tank of turbomachine

摘要

The system (110) has a main circuit (112) with a low pressure pump (116), and a heat exchanger (117) utilizing fuel as a cold source. Fuel return circuit (130) returns the fuel towards a fuel tank (114) of a turbomachine. The return circuit includes a return valve (132) to control the flow of fuel returned towards the tank. The return circuit is connected to a high pressure portion (150) of the main circuit situated downstream of a high pressure pump (118). The main circuit includes a variable geometry system (140) down stream of the high pressure pump. An independent claim is also included for a turbomachine comprising a control unit.