CONTROL METHOD OF FUEL FLOW TO MULTI-MANIFOLD COMBUSTION CHAMBER OF GAS TURBINE ENGINE Russian patent published in 2011 - IPC F02C9/26 

FIELD: engines and pumps.

SUBSTANCE: invention can be used in electronic hydro mechanical automatic control systems (ACS) of gas turbine engines (GTE). Essence of invention is that additional fuel distribution between manifolds is performed by means of batchers the number of which corresponds to the number of fuel manifolds of CC (combustion chamber); at that, depending on the required fuel flow to the first fuel manifold of CC, the specified position of the first batcher is determined; actual position of the first batcher is measured and fuel flow is controlled to the first manifold by changing the position of the first batcher, and maintenance of fuel pressure drop on the first batcher is provided owing to changing the fuel pump capacity; the inlets of the rest batchers are hydraulically connected to the inlet of the first batcher; the specified position of the rest batchers is determined on the basis of the required fuel flow to the appropriate fuel manifold of CC; actual position of the rest batchers is measured and fuel flow is controlled by means of changing the position of the rest batchers; at that, the specified position of the rest batchers is corrected depending on hydraulic resistance in fuel supply path after the first batcher and hydraulic resistance in fuel supply path after the corresponding batcher.

EFFECT: improving ACS operating quality and GTE reliability and aircraft safety owing to introducing the recording algorithm of actual characteristics of fuel supply path to CC.

1 dwg