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Anti-stuck pressure relief system for engine lubricating oil

A lubricating oil and anti-seize technology, which is used in the control of lubricant pressure, the installation/connection of lubricant purification devices, lubricating parts, etc. Stability, poor durability and other problems, to avoid failure, prevent excessive compression, reduce the risk of sticking

Active Publication Date: 2015-09-02
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to propose an improved technical scheme for the pressure limiting valve in the prior art, and through this technical scheme, it can solve the oil pressure instability of the lubrication system caused by the use of the steel ball pressure limiting valve, and the frequent switching oscillation of the steel ball pressure limiting valve. The problem of poor durability; at the same time, it can also solve the problems of floating on the plunger pressure limiting valve and excessive compression of the plunger valve spring.

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  • Anti-stuck pressure relief system for engine lubricating oil
  • Anti-stuck pressure relief system for engine lubricating oil
  • Anti-stuck pressure relief system for engine lubricating oil

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Embodiment Construction

[0029] The technical solution of the present invention is described in detail below through the examples, and the following examples are only exemplary and can only be used to explain and illustrate the technical solution of the present invention, rather than being interpreted as a limitation to the technical solution of the present invention.

[0030] Because the pressure resistance of the lubrication system needs to be considered comprehensively, the oil filter can only filter out 60% of the impurities in the oil passing through the filter paper, and the relatively fine impurities that cannot be filtered still exist in the lubrication system, and these impurities are mostly iron impurities. , This kind of impurity is small in size and high in hardness, and it is easy to accumulate in the side clearance of the plunger of the plunger pressure limiting valve, causing wear and sticking of the plunger. Moreover, not all the oil in the system is filtered by the oil filter. The pres...

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Abstract

The invention relates to an anti-stuck pressure relief system for engine lubricating oil. The system comprises a main oil duct, a first pressure limiting valve oil duct, a second pressure limiting valve oil duct, a steel ball type pressure limiting valve, a plunger type pressure limiting valve and a bolt provided with a magnet, wherein one end of the first pressure limiting valve oil duct and one end of the second pressure limiting valve oil duct are connected with the main oil duct; the plunger type pressure limiting valve is arranged at the other end of the first pressure limiting valve oil duct; the steel ball type pressure limiting valve is arranged at the other end of the second pressure limiting valve oil duct; a bolt hole is formed in one side wall of the first pressure limiting valve oil duct; the bolt provided with the magnet is matched and connected with the bolt hole through threads. The steel ball type pressure limiting valve and the plunger type pressure limiting valve are simultaneously used in the lubricating system and are connected in parallel, and the opening pressure of the steel ball type pressure limiting valve is set to be larger than that of the plunger type pressure limiting valve.

Description

technical field [0001] The invention belongs to the technical field of engine lubricating systems, in particular to a pressure relief system for preventing engine lubricating oil from sticking. Background technique [0002] The function of the lubrication system is to continuously deliver a sufficient amount of clean engine oil at an appropriate temperature to the friction surfaces of all transmission parts when the engine is working, and to form an oil film between the friction surfaces. The function of the oil pump is to increase the oil pressure and ensure a certain oil pressure, and force oil supply to each friction surface. The pump oil volume of the oil pump increases linearly with the increase of the engine speed, while the oil demand of the engine rises slowly with the engine speed, and basically tends to be stable when it reaches 3000rpm. When the engine speed is high, the pump oil volume of the oil pump is much higher than the engine demand, and the system pressur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01M1/20F01M1/16F01M11/03
Inventor 苏晓芳靳素华杨林强张应兵张建操陈帆刘彤房程程倪成鑫邱若友罗俊
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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