A pressure pulse resistant pressure boost shut-off device and method
By designing the main shut-off valve and the pulse pressure relief valve assembly in coordination, the pressure pulse problem of the fuel system under extreme conditions was solved, achieving stable fuel supply and reliable engine operation.
CN119737233BActive Publication Date: 2026-06-09XIAN AERO ENGINE CONTROLS
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- XIAN AERO ENGINE CONTROLS
- Filing Date
- 2024-12-05
- Publication Date
- 2026-06-09
AI Technical Summary
Technical Problem
Traditional fuel regulation mechanisms cannot effectively respond to fuel system pressure pulses under extreme conditions, leading to unstable fuel supply and affecting engine performance and safety.
Method used
Design a boost shut-off device to resist pressure pulses, including a main shut-off valve assembly and a pulse pressure relief valve assembly. Through the cooperation of the main valve and the pulse pressure relief valve, the fuel pressure pulsation is buffered and the fuel supply is stabilized.
Benefits of technology
Under extreme conditions, the turbocharger shut-off device can effectively reduce fuel pressure pulsation, ensuring the stability of fuel supply and the reliable operation of the engine.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN119737233B_ABST
Abstract
The application can relate to the technical field of aero-engine and aero-engine control system, and particularly relates to a pressure pulse resistant pressurization shutoff device and method. The device comprises a main shutoff valve assembly and a pulse pressure relief valve assembly. The pulse pressure relief valve assembly is arranged in a main valve central cavity in the main shutoff valve assembly, a sensing cavity of the pulse pressure relief valve assembly is in communication with a control cavity of the main shutoff valve assembly, an axial blind hole is arranged in the pulse pressure relief valve close to the sensing cavity, a radial pressure relief through hole in communication with the axial blind hole is arranged in the pulse pressure relief valve, a radial main through hole in communication with the central cavity is arranged in the main valve of the main shutoff valve assembly, and the pulse pressure relief valve in the pulse pressure relief valve assembly can slide along the main valve central cavity. When the pressure relief through hole is in communication with the main through hole, pulse pressure relief is realized. The pressurization shutoff device of the fuel regulating mechanism can meet the pressurization shutoff function, can reduce metering fuel pressure pulsation during engine start-stop stage, and has little influence of control cavity fuel pressure pulsation on the function performance. The device has been used in a certain type of aero-engine and has good effect.
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