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Silicon oil for torsional vibration damper of internal combustion engine

A technology for torsional vibration dampers and internal combustion engines, applied in springs/shock absorbers, mechanical equipment, vibration suppression adjustment, etc., can solve problems such as the unsuitability of methylphenyl silicone oil, and achieve the effect of improving performance

Inactive Publication Date: 2019-04-05
NINGBO SEDSUN VIBRATION DAMPER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0036] It can be seen that methyl phenyl silicone oil is not suitable for internal combustion engine torsional vibration damper products

Method used

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  • Silicon oil for torsional vibration damper of internal combustion engine
  • Silicon oil for torsional vibration damper of internal combustion engine
  • Silicon oil for torsional vibration damper of internal combustion engine

Examples

Experimental program
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Effect test

Embodiment 1

[0049] Embodiment one: a kind of silicone oil that is used for internal combustion engine torsional vibration damper, is formed after mixing and stirring by methyl silicone oil and iron triacetylacetonate, and its molecular formula is [(CH3)2SiO]n. The structural formula is

[0050]

[0051] The number of n-series polysiloxane chains, iron triacetylacetonate is metal ion ferric iron and ferrous iron and organic group acetylacetonate ion CH 3 -CO-CH--CO-CH 3 Combined organic iron compound, molecular formula: C15H21FeO6, molecular weight: 353.1686, melting point 184°C, molecular structure formula:

[0052]

[0053] The iron triacetylacetonate is 0.1%-0.3% of the methyl silicone oil by mass fraction. Its performance is shown in the table below:

[0054]

[0055] It can be seen from the above table that the silicone oil of the present invention has not been gelled at 250°C for 60 days X24=1440 hours, the minimum gel temperature has reached 460°C, and the viscosity-temp...

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Abstract

The invention discloses silicon oil for a torsional vibration damper of an internal combustion engine. The silicon oil for the torsional vibration damper of the internal combustion engine is characterized in that methyl silicone oil and ferric acetylacetonate are mixed and stirred to form the silicon oil, and the mass fraction of the ferric acetylacetonate is 0.1-0.3% of the methyl silicone oil. The silicon oil has the advantages that the ferric acetylacetonate with the specific mass fraction is added into the methyl silicone oil and is uniformly mixed, compared with a methyl silicone oil which is not add the ferric acetylacetonate components, the gelatinization temperature of the methyl silicon oil added with the ferric acetylacetonate and the methyl silicon oil not added with the ferricacetylacetonate is measured, a gel is generated at the temperature of 250 DEG C for 10 hours in the prior art, the methyl silicone oil mixed solution with 0.1%-0.3% of the ferric acetylacetonate of the invention is added, gelation does not occur yet after 60 days * 24 = 1440 hours at the temperature of 250 DEG C, when the mass percent of the doped ferric acetylacetonate is changed between 0.1-0.3%, the viscosity-temperature coefficient changes between 0.61-0.62, the viscosity-temperature coefficient is basically the same as that of the methyl silicone oil, and the silicon oil is completely suitable for a torsional vibration damper product of the internal combustion engine.

Description

technical field [0001] The invention relates to a silicone oil, in particular to a silicone oil used for a torsional vibration damper of an internal combustion engine. Background technique [0002] Nowadays, internal combustion engines have been widely used in fields such as automobiles, engineering machinery, and ships. However, when the internal combustion engine is running, there must be torsional vibration in the crankshaft system. This torsional vibration not only brings about the vibration of the whole machine, but also increases the wear and noise between the parts and causes the engine power to be lost. And when the frequency of the exciting force is an integer multiple of the natural frequency of the crankshaft, resonance may even occur and the crankshaft will be twisted, resulting in a machine crash accident. [0003] In order to reduce the torsional vibration of the crankshaft, the current method is to install a shock absorber at the front end of the crankshaft ...

Claims

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Application Information

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IPC IPC(8): F16F15/173
CPCF16F15/173
Inventor 仇建文黄敏华
Owner NINGBO SEDSUN VIBRATION DAMPER CO LTD
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