Fuel circulation control method

A method of controlling a fuel supply system including a pump connected to a fuel disbursement means through a controllable valve in parallel with a first restrictor means and a return path connecting said fuel disbursement means to said pump and including a second restrictor means, said method comprising the steps of:

• summing a first pressure signal representative of a pressure at an input of said first restrictor means with a second pressure signal representative of a pressure in a manifold of said fuel disbursement means to form a first sum signal;
• calculating a square root of said first sum signal to form a first square root signal;
• multiplying said first square root signal by a first constant signal representative of a constant proportional to a flow coefficient of said first restrictor means to form a first product signal;
• summing said second pressure signal with a third pressure signal representative of a pressure at an output of said second restrictor means to form a second sum signal;
• calculating a square root of said second sum signal to form a second square root signal;
• multiplying said second square root signal by a constant signal representative of a constant proportional to a flow coefficient of said second restrictor means to form a second product signal;
• adjusting said controllable valve according to the value of said third signal.