Air pump for aero-engine
By designing the injector nozzle with the nozzle facing the connecting rod in the air pump, the problem of insufficient output pressure during splash lubrication is solved, and the effect of maintaining the output air pressure stabilization when the air pump uses a small amount of lubricating oil is achieved, which improves the reliability of the air pump.
Patent Information
- Application Number
- CN202411981275.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-03-21
AI Technical Summary
Existing air pumps used in aircraft engines are prone to insufficient output pressure when using splash lubrication.
An air pump is designed, which includes a cylinder block provided with a pump chamber, a piston and a connecting rod are provided in the pump chamber, and an injector nozzle with a nozzle facing the connecting rod is connected to the cylinder block, and the cross-sectional area of the oil passage at the nozzle of the fuel injector is between 1.1-1.8 square millimeters.
The lubricant is sprayed directly towards the connecting rod through the fuel injector, forming an oil mist, which improves the lubrication effect, so that the air pump can maintain the stability of the output air pressure while using a small amount of lubricant, and the output air pressure is maintained between 4.5-6bar, improving the reliability of the air pump.