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Internal combustion engine cooling oil

A cooling oil and internal combustion engine technology, applied in the field of internal combustion engine cooling oil, can solve the problems affecting the viscosity of the engine oil, the damage of the internal combustion engine, and the effect of sealing and lubrication, and achieve the effects of preventing metal corrosion, not being prone to high pressure, and preventing the generation of air chambers

Inactive Publication Date: 2016-04-13
ANHUI YINGLONG IND TECH
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Problems solved by technology

However, due to the limitation of steel materials and sealing technology in my country's domestic automobiles, the long-term operation of the internal combustion engine above 125 °C is likely to cause damage to the internal combustion engine, shorten the life of the internal combustion engine, affect the viscosity of the engine oil, and affect its sealing and lubrication effects

Method used

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  • Internal combustion engine cooling oil
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Embodiment Construction

[0017] 1. Take 8 parts of deionized water, 60 parts of ethylene glycol, and 24 parts of 1,4-butanediol, put them into the reaction kettle, stir and heat up to 80°C, then add 1 part of octanoic acid, 3 parts of azelaic acid, and sodium benzoate 1 part, 3 parts sodium hydroxide, heat at 90°C for 40 minutes and then cool to obtain clear, transparent cooling oil with pH 8.4; conduct freezing point and boiling point determination experiments according to SH / T0090-1991 and SH / T0089-1991, and the results are based on The cooling oil has a freezing point of -45°C and a boiling point of 124°C.

[0018] 2. Take 15 parts of deionized water, 70 parts of ethylene glycol, and 8 parts of propylene glycol, put them into the reaction kettle, stir and heat up to 90°C, then add 0.6 parts of octanoic acid, 3.4 parts of sebacic acid, 1 part of sodium benzoate, and sodium hydroxide 2 parts, heat at 100°C for half an hour and cool to obtain a clear, transparent cooling oil with pH 7.8; according to ...

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Abstract

The invention provides coolant oil of an internal combustion engine. The coolant oil comprises 8-15% of deionized water, 78-84% of dihydric alcohol, 0.5-5% of eight or more-C monobasic fatty acid and / or dibasic fatty acid, 0.15-1.5% of sodium benzoate and 0.5-3% of caustic alkali. The coolant oil has a freezing point of -55 to -45 DEG C and a boiling point of 115-124 DEG C, satisfies domestic automobile internal combustion engine boiling point requirements, improves a temperature of a water outlet of an internal combustion engine cooling system and does not influence a service life and performances.

Description

technical field [0001] The invention relates to an internal combustion engine cooling oil used in a motor vehicle cooling system. Background technique [0002] For many years, the cooling system of internal combustion engines in my country has been using antifreeze with a boiling point of 100-108°C as the cooling medium. When the temperature of the internal combustion engine exceeds 100°C, it is easy to generate steam and affect the heat transfer effect. According to the bubble nucleation reaction mechanism, the thermal conductivity of the liquid is the strongest in the near-boiling range. According to reports, the boiling point of foreign anhydrous coolant reaches 191°C, but it often makes the engine cylinder head and oil temperature too high. While eliminating the engine boiling, it also produces other disadvantages. Chinese patent CN101481601A discloses a cooling oil for an automobile internal combustion engine. The freezing point of the cooling oil can vary between -38°...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/20
Inventor 常强田卫爱林
Owner ANHUI YINGLONG IND TECH
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