Engine lubrication system of aircraft and aircraft

By incorporating a spacer in the aircraft engine lubrication system in conjunction with the oil reservoir, and using a first and second pump design, the problem of lubricating oil cavitation under weightless conditions is solved, ensuring a continuous supply of lubricating oil and improving the engine's reliability and operational stability.

CN121473948APending Publication Date: 2026-02-06CHINA FAW CO LTD
0 Cites 0 Cited by

Patent Information

Application Number
CN202511781204.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-28
Publication Date
2026-02-06

AI Technical Summary

Technical Problem

In existing aircraft engine lubrication systems, the lubricating oil rises to the surface under weightless conditions, causing the oil to be sucked into the air, resulting in a lack of lubrication for engine components and potentially damaging the engine.

Method used

Design an aircraft engine lubrication system that combines a spacer with an oil reservoir to form an oil storage space. A first pump and a second pump are connected to the engine body and the oil reservoir respectively to ensure that lubricating oil can be continuously drawn into the engine even in weightlessness. At the same time, the lubricating oil in the oil pan is pumped into the oil reservoir through a second pipeline and a second pump to prevent accumulation.

Benefits of technology

It effectively reduces the risk of lubricating oil cavitation, improves engine operating reliability, reduces engine oil churning losses caused by lubricating oil accumulation, and enhances engine reliability.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention discloses an aircraft engine lubricating system and an aircraft, and relates to the field of aircrafts. An engine body is integrated with a first pump; the spacer is arranged in the oil storage tank, and the spacer and the bottom wall of the oil storage tank are spaced and jointly define an oil storage space; the first pipeline is connected between the engine body and the oil storage space, and one end of the first pipeline is located between the spacer and the bottom wall; the second pipeline is connected between the engine body and the oil storage tank. The second pump is arranged on the second pipeline. Therefore, by arranging the spacer, during weight loss, the spacer can block lubricating oil so that the lubricating oil can be stored in the oil storage space all the time, the first pump can conveniently and continuously suck oil through the first pipeline, the risk that the engine is damaged due to the fact that the lubricating oil is completely sucked is reduced, and the operation reliability of the engine is improved; lubricating oil in the oil pan can be pumped into the oil storage tank, and the risk of engine oil stirring loss caused by accumulation of the lubricating oil in the oil pan is reduced.
Need to check novelty before this filing date? Find Prior Art