Coolant for internal combustion engines

A technology for cooling liquid and internal combustion engine, applied in the field of cooling liquid system, can solve the problems of scaling and metal corrosion resistance, and achieve the effect of improving service performance, good corrosion resistance and low cost

Inactive Publication Date: 2016-02-17
张家港迪克汽车化学品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main technical problem to be solved by the present invention is to provide a cooling fluid for internal combustion engines that solves the problems of metal corrosion resistance and fouling, and can also provide longer-term protection for the circulation system of internal combustion locomotives.

Method used

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  • Coolant for internal combustion engines
  • Coolant for internal combustion engines
  • Coolant for internal combustion engines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Prepare 1000kg summer internal combustion engine coolant:

[0030] Pour 900kg of water into the reaction kettle, then add 0.3kg of weighed sodium molybdate, 2kg of sodium nitrite, 0.06kg of benzotriazole, 2kg of borax, 1.2kg of undecanedioic acid, and N-octanoyl Glutamic acid 0.5kg, dissolve transparently and adjust the pH value above 8, then add 0.2kg of sodium ethylenediamine tetramethylene phosphonate and stir to dissolve for 20 minutes, then slowly add 2kg of water glass aqueous solution with a modulus of 3.1 to 3.4, and add while stirring , after stirring evenly, add 15g of defoamer and 21g of pigment red into the reaction kettle together with the remaining water, and finally form a pink transparent solution, which is filtered through a 0.5-1μm filter after passing the inspection After that, it can be divided into packages.

[0031] The multi-coolant for the internal combustion engine can be directly loaded and used for the internal combustion locomotive as requir...

Embodiment 2

[0036] Preparation of 1000kg winter -25°C direct-use coolant:

[0037] Pour 420kg and 400kg of water into the reaction kettle and stir evenly, then add 0.32kg of weighed sodium molybdate, 2.2kg of sodium nitrite, 0.06kg of benzotriazole, 2.1kg of borax, and 1.5kg of undecanedibasic acid. kg, N-octanoyl glutamic acid 0.7kg, after dissolving transparently, adjust the pH value above 8, then add 0.3kg sodium ethylenediamine tetramethylene phosphonate and stir to dissolve for 20 minutes, then slowly add water glass aqueous solution with a modulus of 3.1~3.4 2.2kg, add while stirring, after stirring evenly, add the remaining water mixed with 10g of antifoaming agent and 21g of pigment red into the reaction kettle together, and finally form a pink transparent solution, which is passed after passing the inspection After filtering through a 0.5-1μm filter, it can be dispensed.

[0038] The specific parameters of the test after glassware corrosion are as follows:

[0039]

[0040] ...

Embodiment 3

[0042] Prepare 1000kg of cooling fluid for direct use in winter -45°C severe cold areas:

[0043] Pour 650kg and 200kg of water into the reaction kettle and stir evenly, then add 0.3kg of weighed sodium molybdate, 2.2kg of sodium nitrite, 0.062kg of benzotriazole, 2.3kg of borax, and 1.5kg of undecanedibasic acid. kg, N-octanoyl glutamic acid 0.5kg, after dissolving transparently, adjust the pH value above 8, then add 0.5kg sodium ethylenediamine tetramethylene phosphonate and stir to dissolve for 20 minutes, then slowly add water glass aqueous solution with a modulus of 3.1~3.4 2.1kg, add while stirring, after stirring evenly, mix the remaining water with 10g of defoamer and 21g of pigment red into the reaction kettle together, and finally form a pink transparent solution, which passes the inspection After filtering through a 0.5-1μm filter, it can be dispensed.

[0044] The specific parameters of the test after glassware corrosion are as follows:

[0045]

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PUM

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Abstract

The invention discloses a coolant for internal combustion engines. The coolant comprises components in percentage by mass as follows: 0-90% of diols, 0.03%-1.0% of sodium molybdate, 0.2%-0.5% of sodium nitrite, 0.006%-0.01% of benzotriazole, 0.2%-0.50% of borax, 0.12%-0.8% of undecanedioic acid, 0.05%-0.3% of N-caprylyl glutamic acid, 0.2%-0.5% of sodium silicate, 0.02%-0.2% of ethylene diamine tetra(methylene phosphonic acid) sodium, 0.0005%-0.005% of a defoaming agent and the balance of deionized water. The coolant has the characteristic that the coolant is more lasting than those adopting the simple inorganic salt internal combustion engine formula technology and has a good scale inhibition effect; the coolant has the characteristic that the coolant can be stored for a long time and is not prone to scaling and turbidness during usage due to added organic acid combinations, and can perform comprehensive multi-layer protection on cooling systems of internal combustion locomotives.

Description

technical field [0001] The invention relates to a cooling liquid system for all aspects of multi-layer protection for the cooling systems of internal combustion locomotives such as ships and trains, in particular to a cooling liquid for internal combustion engines. Background technique [0002] The coolant for internal combustion engines is a liquid with heat transfer performance. In summer, the formula technology of deionized water plus anti-corrosion additives can be used for anti-corrosion. Anti-corrosion and anti-icing technology, and make the coolant still have good fluidity and thermal conductivity at low temperatures, which can take away a large amount of heat generated by the engine during operation, and prevent boiling, Anti-corrosion, anti-scaling, anti-freezing, anti-evaporation loss and other advantages. [0003] The Ministry of Railways TB / T1750-2006 stipulates the standard specification for adding additives to coolants for internal combustion engines, and clar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/20
CPCC09K5/20
Inventor 曹云龙陶佃彬单猛童秀凤杨飞邹密王少华
Owner 张家港迪克汽车化学品有限公司
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