一种航空发动机主燃油小流量供油精度校准方法
By constructing a phased fuel supply curve and using interpolation calculations, the problem of fuel supply accuracy caused by changes in the return oil characteristics of the aero-engine starting device was solved, achieving precise fuel supply control, simplifying the calibration process, and improving the engine's reliable starting and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- AECC SHENYANG ENGINE RES INST
- Filing Date
- 2026-06-17
- Publication Date
- 2026-07-17
AI Technical Summary
The change in the oil return characteristics of the starting device of an aero-engine under different operating conditions leads to low oil supply accuracy in the low flow range, which affects the reliable starting of the engine. Furthermore, mechanical adjustment is difficult and the time required for operation is long.
By constructing a phased fuel supply curve with a small flow rate for the main fuel, recording the actual fuel supply flow rate and return fuel duty cycle, and using interpolation to calculate the relationship curve between the target flow rate and the return fuel duty cycle, the curve is written into the digital electronic controller to achieve accuracy calibration.
It improves the fuel supply accuracy in the low-flow range of the engine, avoids mechanical adjustments, shortens calibration time, and improves the delivery efficiency of mass-produced engines.
Smart Images
Figure CN122409200A_ABST