Method for repairing lubricating oil leakage of through bolt of aviation piston engine case

A piston engine and through-bolt technology, which is applied to engine components, machines/engines, engine sealing devices, etc., can solve problems such as the failure of bolts to achieve the purpose of interference, casing extrusion cracks, and difficult selection of bolts.

Active Publication Date: 2021-08-10
CIVIL AVIATION FLIGHT UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the disadvantage of this method is that it is difficult to select the bolts. If the outer diameter of the bolts is too small, the interference cannot be achieved, and if the outer diameter of the bolts is too small, it may cause the bolts to push the casing out of the cracks. Danger

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  • Method for repairing lubricating oil leakage of through bolt of aviation piston engine case
  • Method for repairing lubricating oil leakage of through bolt of aviation piston engine case
  • Method for repairing lubricating oil leakage of through bolt of aviation piston engine case

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Embodiment Construction

[0034] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0035] The embodiment is basically as attached Figure 1-3 Shown:

[0036] In this embodiment, the method for repairing lubricating oil leakage through the casing of the aviation piston engine includes the following steps:

[0037] S1: Use the fixing device to fix the receiver;

[0038] S2: Machining a mounting groove of a predetermined size at the end of the bolt hole on the inner wall of the casing;

[0039] S3: Install a sealing ring matching the installation groove in the installation groove;

[0040] S4: Add bolts that match the sealing ring in the sealing ring.

[0041] The beneficial effects of the present invention are: after the sealing ring is installed, the elastic deformation of the sealing ring can ...

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Abstract

The invention relates to a method for repairing lubricating oil leakage of a through bolt of an aviation piston engine case, in particular to the field of engineering element or part sealing. The method comprises the following steps that S1, the case is fixed by using a fixing device; S2, a mounting groove with a preset size is machined in the end of a bolt hole in the inner wall of the case; S3, a sealing ring matched with the mounting groove is additionally arranged in the mounting groove; and S4, a bolt matched with the sealing ring is additionally arranged in the sealing ring. According to the scheme, the technical problem of how to repair the lubricating oil leakage of the through bolt of the aviation piston engine is solved, and the method is suitable for repairing the lubricating oil leakage of the through bolt of the aviation piston engine.

Description

technical field [0001] The invention relates to the field of sealing of engineering components or parts, in particular to a method for repairing lubricating oil leakage through bolts of an aviation piston engine case. Background technique [0002] As the Lycoming engine has been used for a long time, the number of oil leakage failures at the casing through the bolt hole has gradually increased. Installing the "O" type sealing ring after processing the round groove at the bolt hole of the casing can effectively prevent the occurrence of this failure. [0003] The Lycoming engine casing is composed of left and right halves, and the left and right halves of the casing are mainly installed with the casing by a few through bolts. [0004] The interference fit of the hole is connected as a whole. During the actual operation of the engine, the bolts and their mounting grooves move slightly relative to each other, resulting in wear. With the accumulation of engine service time, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02F11/00
CPCF02F11/00Y02T50/60
Inventor 常虎山吴江白宇翔姜兴奇钟声刚
Owner CIVIL AVIATION FLIGHT UNIV OF CHINA
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