Self-adaptive differential pressure correcting device

The invention relates to a self-adaptive differential pressure correcting device. The self-adaptive differential pressure correcting device comprises a metering valve, a differential pressure thin film assembly, a nozzle, a housing, a flow nipple, a feedback thin film assembly, a fuel spray nozzle, a lever, a feedback rod, a supporting point rotating shaft, a seal ring, a vacuum diaphragm capsule,a spring seat and a reset spring; on the basis of a thin film type differential pressure valve, an air pressure sensitive element is additionally arranged on the thin film type differential pressurevalve, differential pressure correction along with air pressure is realized, and then the function that the flow rate of a fuel flowing through the metering vale can change along with the differentialpressure. According to the device, a fuel control system can be simplified, and the response speed of the system can be improved. 本发明涉及种自适应压差修正装置，包括计量活门、压差薄膜组件、喷嘴、壳体、节流嘴、反馈薄膜组件、喷油嘴、杠杆、反馈杆、支点转轴、密封圈、真空膜盒、弹簧座和复位弹簧；以薄膜式压差活门为基础，在其上