METHOD AND DEVICE FOR FEEDING A TURBINE ENGINE COMBUSTION CHAMBER WITH A CONTROLLED FUEL FLOW

摘要

The invention relates to a controlled high-pressure fuel flow which is fed into a combustion chamber (16) via a valve (20), the position of which is controlled, and a shut-off and pressurisation check valve (40) with variable opening. A value representing the actual mass flow of fuel supplied is calculated by a computation unit (60) from information representing the pressure difference (?P) between the input and output of the check valve (40) and the clearance through the check valve, for example, resulting in the position X of the check valve slide. The valve (20) has a variable position controlled by the computation unit (60) according to the difference between the calculated value representing the actual mass flow and a value representing a desired mass flow.