WO2013183161A1 - 内燃機関用冷却液組成物及び内燃機関の運転方法 - Google Patents
内燃機関用冷却液組成物及び内燃機関の運転方法 Download PDFInfo
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- WO2013183161A1 WO2013183161A1 PCT/JP2012/064773 JP2012064773W WO2013183161A1 WO 2013183161 A1 WO2013183161 A1 WO 2013183161A1 JP 2012064773 W JP2012064773 W JP 2012064773W WO 2013183161 A1 WO2013183161 A1 WO 2013183161A1
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- Prior art keywords
- internal combustion
- composition
- parts
- coolant
- combustion engines
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- 239000000203 mixture Substances 0.000 title claims abstract description 70
- 239000002826 coolant Substances 0.000 title claims abstract description 49
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 26
- 239000007788 liquid Substances 0.000 title abstract description 7
- 238000011017 operating method Methods 0.000 title abstract description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 87
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 150000001298 alcohols Chemical class 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- -1 glycol monoalkyl ethers Chemical class 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 6
- 239000012782 phase change material Substances 0.000 claims description 5
- 239000000446 fuel Substances 0.000 abstract description 7
- 238000001816 cooling Methods 0.000 description 38
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 description 16
- 239000000110 cooling liquid Substances 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 14
- 238000005259 measurement Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- MKYBYDHXWVHEJW-UHFFFAOYSA-N N-[1-oxo-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propan-2-yl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(C(C)NC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 MKYBYDHXWVHEJW-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 150000002334 glycols Chemical class 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- DNIAPMSPPWPWGF-VKHMYHEASA-N (+)-propylene glycol Chemical compound C[C@H](O)CO DNIAPMSPPWPWGF-VKHMYHEASA-N 0.000 description 2
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 description 2
- YPFDHNVEDLHUCE-UHFFFAOYSA-N 1,3-propanediol Substances OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 2
- SVTBMSDMJJWYQN-UHFFFAOYSA-N 2-methylpentane-2,4-diol Chemical compound CC(O)CC(C)(C)O SVTBMSDMJJWYQN-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 239000012809 cooling fluid Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 229920000166 polytrimethylene carbonate Polymers 0.000 description 2
- 229940114930 potassium stearate Drugs 0.000 description 2
- ANBFRLKBEIFNQU-UHFFFAOYSA-M potassium;octadecanoate Chemical compound [K+].CCCCCCCCCCCCCCCCCC([O-])=O ANBFRLKBEIFNQU-UHFFFAOYSA-M 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- ZWVMLYRJXORSEP-UHFFFAOYSA-N 1,2,6-Hexanetriol Chemical compound OCCCCC(O)CO ZWVMLYRJXORSEP-UHFFFAOYSA-N 0.000 description 1
- SBASXUCJHJRPEV-UHFFFAOYSA-N 2-(2-methoxyethoxy)ethanol Chemical compound COCCOCCO SBASXUCJHJRPEV-UHFFFAOYSA-N 0.000 description 1
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- COBPKKZHLDDMTB-UHFFFAOYSA-N 2-[2-(2-butoxyethoxy)ethoxy]ethanol Chemical compound CCCCOCCOCCOCCO COBPKKZHLDDMTB-UHFFFAOYSA-N 0.000 description 1
- WFSMVVDJSNMRAR-UHFFFAOYSA-N 2-[2-(2-ethoxyethoxy)ethoxy]ethanol Chemical compound CCOCCOCCOCCO WFSMVVDJSNMRAR-UHFFFAOYSA-N 0.000 description 1
- MXVMODFDROLTFD-UHFFFAOYSA-N 2-[2-[2-(2-butoxyethoxy)ethoxy]ethoxy]ethanol Chemical compound CCCCOCCOCCOCCOCCO MXVMODFDROLTFD-UHFFFAOYSA-N 0.000 description 1
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 1
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 1
- UJRRFYOOIAUSJA-UHFFFAOYSA-N 5-methylheptane-1,2,4-triol Chemical compound CCC(C)C(O)CC(O)CO UJRRFYOOIAUSJA-UHFFFAOYSA-N 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical group O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- ALQSHHUCVQOPAS-UHFFFAOYSA-N Pentane-1,5-diol Chemical compound OCCCCCO ALQSHHUCVQOPAS-UHFFFAOYSA-N 0.000 description 1
- 101100484930 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) VPS41 gene Proteins 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 description 1
- 230000002528 anti-freeze Effects 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000013556 antirust agent Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 1
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- 150000001642 boronic acid derivatives Chemical class 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 150000001734 carboxylic acid salts Chemical class 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 229940028356 diethylene glycol monobutyl ether Drugs 0.000 description 1
- XXJWXESWEXIICW-UHFFFAOYSA-N diethylene glycol monoethyl ether Chemical compound CCOCCOCCO XXJWXESWEXIICW-UHFFFAOYSA-N 0.000 description 1
- 229940075557 diethylene glycol monoethyl ether Drugs 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- TUEYHEWXYWCDHA-UHFFFAOYSA-N ethyl 5-methylthiadiazole-4-carboxylate Chemical compound CCOC(=O)C=1N=NSC=1C TUEYHEWXYWCDHA-UHFFFAOYSA-N 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 229940051250 hexylene glycol Drugs 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000005499 meniscus Effects 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 150000002826 nitrites Chemical class 0.000 description 1
- JCGNDDUYTRNOFT-UHFFFAOYSA-N oxolane-2,4-dione Chemical compound O=C1COC(=O)C1 JCGNDDUYTRNOFT-UHFFFAOYSA-N 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- MQOCIYICOGDBSG-UHFFFAOYSA-M potassium;hexadecanoate Chemical compound [K+].CCCCCCCCCCCCCCCC([O-])=O MQOCIYICOGDBSG-UHFFFAOYSA-M 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 229940045870 sodium palmitate Drugs 0.000 description 1
- 229940080350 sodium stearate Drugs 0.000 description 1
- GGXKEBACDBNFAF-UHFFFAOYSA-M sodium;hexadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCC([O-])=O GGXKEBACDBNFAF-UHFFFAOYSA-M 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- UWHCKJMYHZGTIT-UHFFFAOYSA-N tetraethylene glycol Chemical compound OCCOCCOCCOCCO UWHCKJMYHZGTIT-UHFFFAOYSA-N 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 150000003557 thiazoles Chemical class 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 150000003852 triazoles Chemical class 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- JLGLQAWTXXGVEM-UHFFFAOYSA-N triethylene glycol monomethyl ether Chemical compound COCCOCCOCCO JLGLQAWTXXGVEM-UHFFFAOYSA-N 0.000 description 1
- QXJQHYBHAIHNGG-UHFFFAOYSA-N trimethylolethane Chemical compound OCC(C)(CO)CO QXJQHYBHAIHNGG-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/08—Materials not undergoing a change of physical state when used
- C09K5/10—Liquid materials
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/06—Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice versa
- C09K5/066—Cooling mixtures; De-icing compositions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/14—Indicating devices; Other safety devices
- F01P11/16—Indicating devices; Other safety devices concerning coolant temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P2003/001—Cooling liquid
Definitions
- the present invention relates to a coolant composition for an internal combustion engine that can improve the fuel efficiency of the internal combustion engine, and a method for operating the internal combustion engine using the same.
- coolants for cooling automobile engines and the like are known.
- water is preferable because it has the highest cooling performance as an engine coolant.
- fresh water freezes at temperatures below 0 ° C and increases in volume, which may damage the engine and radiator.
- it is diluted with water so as to obtain a necessary freezing temperature based on glycols such as ethylene glycol, and if necessary, metals, rubbers, resins, etc. used for engines, radiators, etc.
- Coolant compositions containing various additives for protecting the deterioration of the liquid have been used.
- a coolant composition in which various additives are mixed with water may be used.
- Patent Documents 4-6 describe a technique for improving the viscosity characteristics of a lubricating oil by blending a viscosity index improver.
- the viscosity index improver described therein exhibits fluidity at low temperatures. It is formulated for the purpose of reducing the decrease in viscosity at high temperatures while maintaining it, and therefore, even when a liquid agent containing such a viscosity index improver is used as a cooling liquid, the cooling loss at low temperatures is reduced, In addition, the cooling capacity at high temperatures cannot be maintained.
- JP-A-8-183950 JP 2010-236064 A Japanese Patent Laid-Open No. 9-227859 JP 2011-137089 A JP 2011-132285 A JP 2011-121991 A
- an object of the present invention to provide a coolant composition for an internal combustion engine that can improve the fuel efficiency effect of the internal combustion engine and an operating method of the internal combustion engine using the same.
- an object of the present invention is to provide a cooling liquid composition that can reduce cooling loss at low temperatures and maintain cooling capacity at high temperatures, and an operating method of an internal combustion engine using the same.
- the inventors have made it possible to reduce the cooling loss at low temperatures and maintain the cooling capacity at high temperatures by setting the kinematic viscosity of the coolant composition in a specific range, and thus the fuel consumption of the internal combustion engine. It has been found that the effect is greatly improved.
- the present invention includes the following inventions.
- a cooling liquid composition having a kinematic viscosity of 8.5 to 3000 mm 2 / sec at 25 ° C. and 0.3 to 1.3 mm 2 / sec at 100 ° C. is used as a cooling liquid for an internal combustion engine.
- a method for operating an internal combustion engine is used as a cooling liquid for an internal combustion engine.
- the coolant composition contains, as a base, at least one alcohol selected from the group consisting of dihydric alcohols, trihydric alcohols and glycol monoalkyl ethers and / or water. The method described.
- a coolant composition for an internal combustion engine having a kinematic viscosity of 8.5 to 3000 mm 2 / sec at 25 ° C. and 0.3 to 1.3 mm 2 / sec at 100 ° C.
- composition according to (5) above which contains at least one alcohol selected from the group consisting of dihydric alcohols, trihydric alcohols and glycol monoalkyl ethers and / or water as a base.
- composition according to the above (5) or (6), comprising a viscosity characteristic improver comprising a viscosity characteristic improver.
- the present invention it is possible to provide a coolant composition for an internal combustion engine that can improve the fuel efficiency effect of the internal combustion engine, and a method for operating the internal combustion engine using the same.
- FIG. 1 is a diagram illustrating the principle of the warm-up performance evaluation apparatus used in the examples.
- FIG. 2 is a diagram illustrating the principle of the cooling performance evaluation apparatus used in the examples.
- the coolant composition of the present invention has a kinematic viscosity of 8.5 to 3000 mm 2 / sec at 25 ° C. and 0.3 to 1.3 mm 2 / sec at 100 ° C. is there.
- low temperature means 25 ° C.
- high temperature means 100 ° C.
- the cooling liquid composition of the present invention has a kinematic viscosity at 25 ° C. of 8.5 to 3000 mm 2 / sec, preferably 10 to 2200 mm 2 / sec, particularly 17.5 to 1000 mm 2 / sec, and therefore heat dissipation at low temperatures. Low cooling loss. Since the coolant composition of the present invention has a kinematic viscosity at 25 ° C. of 3000 mm 2 / sec or less, it is possible to avoid a load on the water pump and prevent deterioration of fuel consumption of the internal combustion engine.
- the cooling fluid composition of this invention has a kinematic viscosity higher than the conventional 80% ethylene glycol cooling fluid.
- the ethylene glycol coolant cannot be used as a coolant because the flash point is generated when the ethylene glycol concentration exceeds 80%.
- the cooling liquid composition of the present invention has a low kinematic viscosity at 100 ° C. of 0.3 to 1.3 mm 2 / sec, preferably 0.5 to 0.9 mm 2 / sec. It is possible to prevent overheating.
- the cooling capacity of the cooling liquid composition can be evaluated by measuring the radiator heat transmittance.
- the kinematic viscosity at 100 ° C. of a 100% water coolant is 0.3 mm 2 / sec.
- the cooling liquid composition of the present invention preferably contains a base having antifreezing properties.
- the compounding amount of the base is preferably 86 to 98.6 parts by mass, particularly preferably 91 to 96.7 parts by mass with respect to 100 parts by mass of the composition.
- Examples of the base include at least one alcohol selected from the group consisting of dihydric alcohols, trihydric alcohols, and glycol monoalkyl ethers.
- dihydric alcohol examples include ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, 1,3-propanediol, 1,4-butanediol, 1,3-butanediol, 1,5-pentanediol, and hexylene glycol. What consists of 1 type, or 2 or more types of mixtures chosen from among these can be mentioned.
- trihydric alcohol examples include one or more selected from glycerin, trimethylolethane, trimethylolpropane, 5-methyl-1,2,4-heptanetriol, and 1,2,6-hexanetriol. The thing which consists of a mixture can be mentioned.
- glycol monoalkyl ether examples include ethylene glycol monomethyl ether, diethylene glycol monomethyl ether, triethylene glycol monomethyl ether, tetraethylene glycol monomethyl ether, ethylene glycol monoethyl ether, diethylene glycol monoethyl ether, triethylene glycol monoethyl ether, tetraethylene glycol. Mention may be made of one or a mixture of two or more selected from monoethyl ether, ethylene glycol monobutyl ether, diethylene glycol monobutyl ether, triethylene glycol monobutyl ether and tetraethylene glycol monobutyl ether.
- ethylene glycol, propylene glycol, and 1,3-propanediol are preferable from the viewpoints of handleability, cost, and availability.
- the amount of the alcohol blended is preferably 8.6 to 78.88 parts by mass with respect to 100 parts by mass of the composition, considering antifreezing properties, and 21.5 to 78.88 parts by mass. It is particularly preferred.
- the base may contain water, and the water is preferably ion-exchanged water.
- the blending amount of water is preferably 17.2 to 88.74 parts by mass, particularly preferably 17.2 to 73.95 parts by mass with respect to 100 parts by mass of the composition.
- the base contains water and alcohols
- the ratio of water and alcohols in the base is preferably 20:80 to 90:10 from the viewpoint of avoiding the flash point, and 40: Particularly preferred is 60 to 75:25. If antifreeze is not required, the base may be water alone.
- the cooling liquid composition of the present invention preferably contains a substance capable of increasing the kinematic viscosity at low temperatures and reducing the kinematic viscosity at high temperatures, that is, a viscosity property improving agent.
- a viscosity property improving agent capable of increasing the kinematic viscosity at low temperatures and reducing the kinematic viscosity at high temperatures.
- the viscosity property improver is not particularly limited as long as the kinematic viscosity of the coolant composition can be within the predetermined range.
- a phase change substance can be used, and it is preferable to use a phase change substance that changes phase at 60 to 100 ° C.
- a phase change substance include a carboxylic acid salt having a melting point of 40 ° C. to 80 ° C. as a free carboxylic acid, for example, an aliphatic carboxylic acid salt having 14 to 18 carbon atoms, and Examples thereof include those having a solubility in alcohols used as a base of 5% by mass or less at 25 ° C. and 10% by mass or more at 100 ° C.
- Specific examples include sodium stearate, potassium stearate, sodium palmitate and potassium palmitate, preferably sodium stearate and potassium stearate.
- phase change material can be solidified and slurried at a low temperature to increase the kinematic viscosity of the cooling liquid, and can be liquefied at a high temperature to reduce the kinematic viscosity of the cooling liquid.
- thermoplastic substance for example, a substance that has associative property near 25 ° C. and disappears near 100 ° C.
- association includes intermolecular hydrogen bonding, hydrophobic interaction (especially polymer), and ⁇ stacking between aromatic organic molecules.
- the molecules to be associated may be the same or different.
- Such a substance can increase the kinematic viscosity of the coolant to exhibit behavior as a macromolecule at low temperatures and reduce the kinematic viscosity of the coolant to exhibit behavior as a single molecule at high temperatures. it can.
- the blending amount of the viscosity property improver is not particularly limited as long as the kinematic viscosity of the cooling composition at a low temperature and a high temperature can be within the predetermined range, and is 1.
- the amount is preferably 3 to 4.0 parts by mass, and particularly preferably 2.0 to 3.0 parts by mass.
- the above various viscosity characteristic improvers can be used in combination.
- cooling composition of the present invention if necessary, other additives can be blended with the base as long as the effects of the present invention are not impaired, in addition to the above-mentioned viscosity characteristic improver.
- the cooling composition of the present invention includes at least one rust preventive agent in a range that does not affect kinematic viscosity in order to effectively suppress corrosion of metals used in automobile engine cooling circuits.
- Antirust agents include phosphoric acid and / or salt thereof, aromatic carboxylic acid and / or salt thereof, triazoles, thiazoles, silicates, nitrates, nitrites, borates, molybdates, and amine salts Any 1 type or a mixture of 2 or more types can be mentioned.
- a pH adjusting agent such as sodium hydroxide or potassium hydroxide, an antifoaming agent, or a coloring agent can be appropriately added to the cooling composition of the present invention as long as the kinematic viscosity is not affected.
- the total compounding amount of the above other additives is usually 10 parts by mass or less, preferably 5 parts by mass or less with respect to 100 parts by mass of the composition.
- Example 1 45.5 parts by mass of ethylene glycol and 50 parts by mass of water were mixed, and 2 parts by mass in total of 1 part by mass of phosphoric acid as a rust inhibitor and 1 part by mass of benzotriazole were added and mixed. After adding 2.5 parts by mass of sodium stearate to the obtained mixed liquid, the mixed liquid was heated to 80 ° C., then stirred for 30 minutes, and allowed to stand to obtain a cooling liquid composition.
- Example 2 Example 1 with the exception of using 46.5 parts by weight of ethylene glycol instead of 45.5 parts by weight of ethylene glycol and 1.5 parts by weight of sodium stearate instead of 2.5 parts by weight of sodium stearate. A coolant composition was obtained in the same manner.
- Example 3 In the same manner as in Example 1, except that 46 parts by mass of ethylene glycol was used instead of 45.5 parts by mass of ethylene glycol, and 2 parts by mass of sodium stearate was used instead of 2.5 parts by mass of sodium stearate. A coolant composition was obtained.
- Example 4 Except for using ethylene glycol, 92 parts by weight of water instead of 50 parts by weight of water, and 2 parts by weight of sodium stearate instead of 2.5 parts by weight of sodium stearate.
- the cooling liquid composition was obtained by the method.
- Comparative Example 1 A coolant composition was obtained in the same manner as in Example 1 except that 48 parts by mass of ethylene glycol was used instead of 45.5 parts by mass of ethylene glycol, and sodium stearate was not used.
- the coolant composition of Comparative Example 1 corresponds to a conventional 50% ethylene glycol coolant having high cooling performance.
- Example 2 Example 1 except that 58 parts by weight of ethylene glycol was used instead of 45.5 parts by weight of ethylene glycol, 40 parts by weight of water was used instead of 50 parts by weight of water, and sodium stearate was not used. A coolant composition was obtained in the same manner.
- the coolant composition of Comparative Example 2 corresponds to a conventional 60% ethylene glycol coolant having high cooling performance.
- Example 3 Example 1 except that 80 parts by mass of ethylene glycol was used instead of 45.5 parts by mass of ethylene glycol, 18 parts by mass of water was used instead of 50 parts by mass of water, and sodium stearate was not used. A coolant composition was obtained in the same manner.
- the coolant composition of Comparative Example 3 corresponds to a conventional 80% ethylene glycol coolant having a limit concentration that improves warm-up performance and does not generate a flash point.
- Example 4 The coolant was used in the same manner as in Example 1 except that 47.5 parts by weight of water was used instead of 50 parts by weight of water, and 5 parts by weight of sodium stearate was used instead of 2.5 parts by weight of sodium stearate. A composition was obtained.
- Example 1-4 and Comparative Example 1-5 The kinematic viscosity at 25 ° C. and 100 ° C. of the cooling compositions obtained in Example 1-4 and Comparative Example 1-5 was measured, and the thermal characteristics (warming-up performance and cooling performance) were evaluated.
- the kinematic viscosity at 25 ° C. and 100 ° C. of the cooling composition is JIS K 2283 or ASTM D445. It measured based on the test method using the glass capillary viscometer of D446. Specifically, it measured by the following method.
- a Ubbelohde viscometer defined in JIS K K 2283 was prepared, and the sample was filled in a specified amount while tilting so that bubbles did not enter.
- the warm-up performance was measured using a warm-up performance evaluation apparatus as shown in FIG. 1 (see FIG. 1a).
- thermocouple 3 (see FIG. 1b) of the heater unit rose from 25 ° C. to 60 ° C. was measured. Based on the result of Comparative Example 3 (40 seconds), which is a conventional cooling liquid composition having a limit ethylene glycol concentration that improves the warm-up performance and does not generate a flash point, the warm-up is performed when the time is shorter than this. The machine performance was evaluated as high.
- the pump power was fixed, the pressure was increased to 20 kPa or more, and the amount of air heat received when the temperature of the coolant composition was 100 ° C. was measured. The higher the amount of air heat received, the higher the cooling performance. It was evaluated that the cooling performance was maintained when the amount of air heat received was comparable to the results of Comparative Examples 1 and 2, which are conventional cooling station compositions with high cooling performance, that is, 14.2 to 14.7 kW. .
- Table 1 shows the measurement results of the kinematic viscosity, warm-up performance, and cooling performance of the coolant compositions obtained in Example 1-4 and Comparative Example 1-5.
- the coolant composition of Example 1-4 improves warm-up performance and has a shorter time than the coolant composition of conventional Comparative Example 3 having a limit ethylene glycol concentration at which no flash point is generated. It can be seen that the temperature rises and thus the warm-up performance is excellent.
- Example 1-3 has the same amount of heat received by air as Comparative Examples 1 and 2, which are conventional cooling station compositions having high cooling performance, so that the cooling performance is maintained. I understand that.
- the coolant composition of the present invention is suitably used for cooling an internal combustion engine, particularly an automobile engine.
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Abstract
Description
エチレングリコール45.5質量部と水50質量部を混合し、これに防錆剤としてのリン酸1質量部及びベンゾトリアゾール1質量部の計2質量部を添加して混合した。得られた混合液に、ステアリン酸ナトリウム2.5質量部を添加した後、混合液を80℃に昇温し、その後30分攪拌し、静置して冷却液組成物を得た。
エチレングリコール45.5質量部の代わりにエチレングリコール46.5質量部を使用し、ステアリン酸ナトリウム2.5質量部の代わりにステアリン酸ナトリウム1.5質量部を使用した以外は、実施例1と同様の方法で冷却液組成物を得た。
エチレングリコール45.5質量部の代わりにエチレングリコール46質量部を使用し、ステアリン酸ナトリウム2.5質量部の代わりにステアリン酸ナトリウム2質量部を使用した以外は、実施例1と同様の方法で冷却液組成物を得た。
エチレングリコールを使用せず、水50質量部の代わりに水92質量部を使用し、ステアリン酸ナトリウム2.5質量部の代わりにステアリン酸ナトリウム2質量部を使用した以外は、実施例1と同様の方法で冷却液組成物を得た。
エチレングリコール45.5質量部の代わりにエチレングリコール48質量部を使用し、ステアリン酸ナトリウムを使用しなかったこと以外は、実施例1と同様の方法で冷却液組成物を得た。比較例1の冷却液組成物は、冷却性能が高い従来の50%エチレングリコール冷却液に相当する。
エチレングリコール45.5質量部の代わりにエチレングリコール58質量部を使用し、水50質量部の代わりに水40質量部を使用し、ステアリン酸ナトリウムを使用しなかったこと以外は、実施例1と同様の方法で冷却液組成物を得た。比較例2の冷却液組成物は、冷却性能が高い従来の60%エチレングリコール冷却液に相当する。
エチレングリコール45.5質量部の代わりにエチレングリコール80質量部を使用し、水50質量部の代わりに水18質量部を使用し、ステアリン酸ナトリウムを使用しなかったこと以外は、実施例1と同様の方法で冷却液組成物を得た。比較例3の冷却液組成物は、暖機性能を向上させ、かつ引火点が発生しない限界の濃度を有する従来の80%エチレングリコール冷却液に相当する。
水50質量部の代わりに水47.5質量部を使用し、ステアリン酸ナトリウム2.5質量部の代わりにステアリン酸ナトリウム5質量部を使用した以外は、実施例1と同様の方法で冷却液組成物を得た。
エチレングリコール45.5質量部の代わりにエチレングリコール47質量部を使用し、ステアリン酸ナトリウム2.5質量部の代わりにステアリン酸ナトリウム1質量部を使用した以外は、実施例1と同様の方法で冷却液組成物を得た。
冷却組成物の25℃及び100℃における動粘度は、JIS K 2283又はASTM D445.D446のグラス毛管式粘度計を用いる試験方法に準拠して測定した。具体的には以下の方法で測定した。
暖機性能は図1に示すような暖機性能評価装置を用いて測定した(図1a参照)。
冷却性能は、図2に示すような冷却性能評価装置を用いて測定した。
Claims (8)
- 動粘度が、25℃で8.5~3000mm2/秒であり、かつ100℃で0.3~1.3mm2/秒である冷却液組成物を内燃機関の冷却液として用いる、内燃機関の運転方法。
- 冷却液組成物が、基剤として、二価アルコール、三価アルコール及びグリコールモノアルキルエーテルからなる群から選ばれる少なくとも1種のアルコール類及び/又は水を含有する、請求項1に記載の方法。
- 冷却液組成物が粘度特性改良剤を含む、請求項1又は2に記載の方法。
- 粘度特性改良剤が相変化物質である、請求項3に記載の方法。
- 動粘度が、25℃で8.5~3000mm2/秒であり、かつ100℃で0.3~1.3mm2/秒である内燃機関用冷却液組成物。
- 基剤として、二価アルコール、三価アルコール及びグリコールモノアルキルエーテルからなる群から選ばれる少なくとも1種のアルコール類及び/又は水を含有する、請求項5に記載の組成物。
- 粘度特性改良剤を含む、請求項5又は6に記載の組成物。
- 粘度特性改良剤が相変化物質である、請求項7に記載の組成物。
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EP12878555.7A EP2860371B1 (en) | 2012-06-08 | 2012-06-08 | Liquid coolant composition for internal combustion engines and operating method for internal combustion engines |
RU2014126407/06A RU2579786C1 (ru) | 2012-06-08 | 2012-06-08 | Охлаждающая композиция для двигателя внутреннего сгорания и способ эксплуатации двигателя внутреннего сгорания |
BR112014016241-7A BR112014016241B1 (pt) | 2012-06-08 | 2012-06-08 | Composição de refrigerante para motor de combustão interna e método para operar um motor de combustão interna |
PCT/JP2012/064773 WO2013183161A1 (ja) | 2012-06-08 | 2012-06-08 | 内燃機関用冷却液組成物及び内燃機関の運転方法 |
JP2014519777A JP5904278B2 (ja) | 2012-06-08 | 2012-06-08 | 内燃機関用冷却液組成物及び内燃機関の運転方法 |
CN201280063065.XA CN104011344B (zh) | 2012-06-08 | 2012-06-08 | 内燃机用冷却液组成物及内燃机的运转方法 |
US14/369,394 US9212597B2 (en) | 2012-06-08 | 2012-06-08 | Coolant composition for internal combustion engine and method for operating internal combustion engine |
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JP2017186417A (ja) * | 2016-04-04 | 2017-10-12 | トヨタ自動車株式会社 | 冷却液組成物及びこれを用いた内燃機関の運転方法 |
WO2017175052A1 (en) | 2016-04-04 | 2017-10-12 | Toyota Jidosha Kabushiki Kaisha | Coolant composition and method of operating internal combustion engine using the same |
JP2017226805A (ja) * | 2016-06-24 | 2017-12-28 | トヨタ自動車株式会社 | 自動車用エンジン冷却液組成物、自動車用エンジン濃縮冷却液組成物及び内燃機関の運転方法 |
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EP2860371B1 (en) | 2019-10-30 |
BR112014016241B1 (pt) | 2021-11-16 |
EP2860371A1 (en) | 2015-04-15 |
RU2579786C1 (ru) | 2016-04-10 |
BR112014016241A2 (pt) | 2017-06-13 |
US9212597B2 (en) | 2015-12-15 |
CN104011344B (zh) | 2016-12-28 |
BR112014016241A8 (pt) | 2017-07-04 |
JP5904278B2 (ja) | 2016-04-13 |
CN104011344A (zh) | 2014-08-27 |
US20150211407A1 (en) | 2015-07-30 |
JPWO2013183161A1 (ja) | 2016-01-28 |
EP2860371A4 (en) | 2016-03-09 |
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