WO2011037054A1 - 潤滑油組成物および無段変速機 - Google Patents
潤滑油組成物および無段変速機 Download PDFInfo
- Publication number
- WO2011037054A1 WO2011037054A1 PCT/JP2010/065943 JP2010065943W WO2011037054A1 WO 2011037054 A1 WO2011037054 A1 WO 2011037054A1 JP 2010065943 W JP2010065943 W JP 2010065943W WO 2011037054 A1 WO2011037054 A1 WO 2011037054A1
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- WO
- WIPO (PCT)
- Prior art keywords
- lubricating oil
- oil composition
- mass
- group
- component
- Prior art date
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- 239000000203 mixture Substances 0.000 title claims abstract description 63
- 230000005540 biological transmission Effects 0.000 title claims description 34
- 239000000314 lubricant Substances 0.000 title abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims abstract description 33
- 239000002184 metal Substances 0.000 claims abstract description 33
- -1 phosphate ester Chemical class 0.000 claims abstract description 31
- 150000002430 hydrocarbons Chemical group 0.000 claims abstract description 16
- 239000002199 base oil Substances 0.000 claims abstract description 11
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 7
- 239000010452 phosphate Substances 0.000 claims abstract description 7
- 150000003512 tertiary amines Chemical class 0.000 claims abstract description 6
- 125000000623 heterocyclic group Chemical group 0.000 claims abstract description 4
- 239000010687 lubricating oil Substances 0.000 claims description 43
- 125000004432 carbon atom Chemical group C* 0.000 claims description 20
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 8
- 230000001050 lubricating effect Effects 0.000 claims description 7
- 229910052698 phosphorus Inorganic materials 0.000 claims description 6
- 239000011574 phosphorus Substances 0.000 claims description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 5
- 229960001860 salicylate Drugs 0.000 claims description 5
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 4
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 claims description 3
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 3
- 230000002378 acidificating effect Effects 0.000 abstract description 10
- 150000008301 phosphite esters Chemical class 0.000 abstract description 2
- 150000003873 salicylate salts Chemical class 0.000 abstract 1
- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 abstract 1
- 238000002156 mixing Methods 0.000 description 17
- 239000003921 oil Substances 0.000 description 14
- 150000002739 metals Chemical class 0.000 description 13
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 9
- 230000002265 prevention Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 125000000217 alkyl group Chemical group 0.000 description 7
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 6
- 159000000007 calcium salts Chemical class 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 239000002480 mineral oil Substances 0.000 description 6
- 235000014113 dietary fatty acids Nutrition 0.000 description 5
- 150000002148 esters Chemical class 0.000 description 5
- 239000000194 fatty acid Substances 0.000 description 5
- 229930195729 fatty acid Natural products 0.000 description 5
- 235000010446 mineral oil Nutrition 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- 125000003118 aryl group Chemical group 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 4
- 150000004665 fatty acids Chemical class 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 4
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 150000001341 alkaline earth metal compounds Chemical class 0.000 description 3
- 125000003342 alkenyl group Chemical group 0.000 description 3
- 239000003963 antioxidant agent Substances 0.000 description 3
- 230000003078 antioxidant effect Effects 0.000 description 3
- 125000003710 aryl alkyl group Chemical group 0.000 description 3
- 230000000994 depressogenic effect Effects 0.000 description 3
- 239000002270 dispersing agent Substances 0.000 description 3
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 159000000003 magnesium salts Chemical class 0.000 description 3
- 150000002736 metal compounds Chemical class 0.000 description 3
- 239000006078 metal deactivator Substances 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 239000003607 modifier Substances 0.000 description 3
- 229920000193 polymethacrylate Polymers 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- AFFLGGQVNFXPEV-UHFFFAOYSA-N 1-decene Chemical compound CCCCCCCCC=C AFFLGGQVNFXPEV-UHFFFAOYSA-N 0.000 description 2
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 2
- RZRNAYUHWVFMIP-KTKRTIGZSA-N 1-oleoylglycerol Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCC(O)CO RZRNAYUHWVFMIP-KTKRTIGZSA-N 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 239000002518 antifoaming agent Substances 0.000 description 2
- 150000003939 benzylamines Chemical class 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 150000002334 glycols Chemical class 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 229930195734 saturated hydrocarbon Natural products 0.000 description 2
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 239000001384 succinic acid Substances 0.000 description 2
- KZNICNPSHKQLFF-UHFFFAOYSA-N succinimide Chemical class O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 description 2
- 150000005846 sugar alcohols Polymers 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- NSNIMHFJAMGNCZ-UHFFFAOYSA-N (3-hydroxy-2,2-dimethylpropyl) dodecanoate Chemical compound CCCCCCCCCCCC(=O)OCC(C)(C)CO NSNIMHFJAMGNCZ-UHFFFAOYSA-N 0.000 description 1
- RUFPHBVGCFYCNW-UHFFFAOYSA-N 1-naphthylamine Chemical compound C1=CC=C2C(N)=CC=CC2=C1 RUFPHBVGCFYCNW-UHFFFAOYSA-N 0.000 description 1
- YIKVZDICBNEEOZ-UHFFFAOYSA-N 2-ethylhexyl dihydrogen phosphite Chemical compound CCCCC(CC)COP(O)O YIKVZDICBNEEOZ-UHFFFAOYSA-N 0.000 description 1
- 125000000094 2-phenylethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- 229930185605 Bisphenol Natural products 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- YGSDEFSMJLZEOE-UHFFFAOYSA-N Salicylic acid Natural products OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 1
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Natural products C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 1
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 150000001447 alkali salts Chemical class 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 150000008052 alkyl sulfonates Chemical class 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- 125000001204 arachidyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002511 behenyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 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
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- 125000004369 butenyl group Chemical group C(=CCC)* 0.000 description 1
- BNMJSBUIDQYHIN-UHFFFAOYSA-N butyl dihydrogen phosphate Chemical compound CCCCOP(O)(O)=O BNMJSBUIDQYHIN-UHFFFAOYSA-N 0.000 description 1
- OOSPDKSZPPFOBR-UHFFFAOYSA-N butyl dihydrogen phosphite Chemical compound CCCCOP(O)O OOSPDKSZPPFOBR-UHFFFAOYSA-N 0.000 description 1
- GNVMUORYQLCPJZ-UHFFFAOYSA-N carbamothioic s-acid Chemical compound NC(S)=O GNVMUORYQLCPJZ-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 125000000596 cyclohexenyl group Chemical group C1(=CCCCC1)* 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 125000002433 cyclopentenyl group Chemical group C1(=CCCC1)* 0.000 description 1
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 239000007857 degradation product Substances 0.000 description 1
- UCQFCFPECQILOL-UHFFFAOYSA-N diethyl hydrogen phosphate Chemical compound CCOP(O)(=O)OCC UCQFCFPECQILOL-UHFFFAOYSA-N 0.000 description 1
- NAPSCFZYZVSQHF-UHFFFAOYSA-N dimantine Chemical compound CCCCCCCCCCCCCCCCCCN(C)C NAPSCFZYZVSQHF-UHFFFAOYSA-N 0.000 description 1
- 229950010007 dimantine Drugs 0.000 description 1
- YAUPZUPLDOYFST-UHFFFAOYSA-N dodecanoic acid;2-ethyl-2-(hydroxymethyl)propane-1,3-diol Chemical compound CCC(CO)(CO)CO.CCCCCCCCCCCC(O)=O YAUPZUPLDOYFST-UHFFFAOYSA-N 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- ZJXZSIYSNXKHEA-UHFFFAOYSA-N ethyl dihydrogen phosphate Chemical compound CCOP(O)(O)=O ZJXZSIYSNXKHEA-UHFFFAOYSA-N 0.000 description 1
- QDHCHVWSKUMZDZ-UHFFFAOYSA-N ethyl dihydrogen phosphite Chemical compound CCOP(O)O QDHCHVWSKUMZDZ-UHFFFAOYSA-N 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 125000000755 henicosyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000003187 heptyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000006038 hexenyl group Chemical group 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 150000004678 hydrides Chemical class 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 125000002960 margaryl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 125000006178 methyl benzyl group Chemical group 0.000 description 1
- RZRNAYUHWVFMIP-UHFFFAOYSA-N monoelaidin Natural products CCCCCCCCC=CCCCCCCCC(=O)OCC(O)CO RZRNAYUHWVFMIP-UHFFFAOYSA-N 0.000 description 1
- MNOIOAHRVYPSPE-UHFFFAOYSA-N n,n-diethyloctadecan-1-amine Chemical compound CCCCCCCCCCCCCCCCCCN(CC)CC MNOIOAHRVYPSPE-UHFFFAOYSA-N 0.000 description 1
- NHLUVTZJQOJKCC-UHFFFAOYSA-N n,n-dimethylhexadecan-1-amine Chemical compound CCCCCCCCCCCCCCCCN(C)C NHLUVTZJQOJKCC-UHFFFAOYSA-N 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- YWMZGHAFYBXDIQ-UHFFFAOYSA-N n-ethyl-n-methyloctadecan-1-amine Chemical compound CCCCCCCCCCCCCCCCCCN(C)CC YWMZGHAFYBXDIQ-UHFFFAOYSA-N 0.000 description 1
- 125000001196 nonadecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004365 octenyl group Chemical group C(=CCCCCCC)* 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- 229920013639 polyalphaolefin Polymers 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 229940051841 polyoxyethylene ether Drugs 0.000 description 1
- 229920000056 polyoxyethylene ether Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 125000004368 propenyl group Chemical group C(=CC)* 0.000 description 1
- PRAHMDIEZMWIRW-UHFFFAOYSA-N propyl dihydrogen phosphite Chemical compound CCCOP(O)O PRAHMDIEZMWIRW-UHFFFAOYSA-N 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 229960004889 salicylic acid Drugs 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical compound C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- VLLMWSRANPNYQX-UHFFFAOYSA-N thiadiazole Chemical compound C1=CSN=N1.C1=CSN=N1 VLLMWSRANPNYQX-UHFFFAOYSA-N 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- RYYWUUFWQRZTIU-UHFFFAOYSA-K thiophosphate Chemical compound [O-]P([O-])([O-])=S RYYWUUFWQRZTIU-UHFFFAOYSA-K 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 125000005023 xylyl group Chemical group 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M163/00—Lubricating compositions characterised by the additive being a mixture of a compound of unknown or incompletely defined constitution and a non-macromolecular compound, each of these compounds being essential
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
- C10M133/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of less than 30 atoms
- C10M133/04—Amines, e.g. polyalkylene polyamines; Quaternary amines
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2010/00—Metal present as such or in compounds
- C10N2010/04—Groups 2 or 12
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- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
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- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/76—Reduction of noise, shudder, or vibrations
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- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
- C10N2040/045—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for continuous variable transmission [CVT]
Definitions
- the present invention relates to a lubricating oil composition suitable for a continuously variable transmission and a continuously variable transmission filled with the composition.
- the lubricating oil composition described in Patent Document 1 contains an alkaline earth metal sulfonate or phenate, an imide compound, and a phosphorus compound.
- the lubricating oil composition described in Patent Document 2 has at least one phosphorus-containing compound selected from phosphoric acid monoesters, phosphoric acid diesters and phosphorous acid monoesters having a hydrocarbon group having 1 to 8 carbon atoms, and a substituted A tertiary amine compound whose group is a hydrocarbon group having 6 to 10 carbon atoms is blended.
- the lubricating oil compositions described in these patent documents have a high coefficient of friction between metals as a lubricating oil for continuously variable transmissions.
- the continuously variable transmission itself has become more sophisticated, and a continuously variable transmission having a torque converter with a lock-up clutch as a starting mechanism is on the market.
- a continuously variable transmission having a function (slip control) for intentionally sliding the lock-up clutch has been widely used for the purpose of improving the fuel efficiency in the lock-up speed range and reducing the shock at the time of lock-up engagement. ing.
- slip control is performed, depending on the lubricating oil, self-excited vibration called “shudder” is likely to occur. Therefore, the continuously variable transmission oil is required to have a long shudder prevention life.
- the lubricating oil compositions described in Patent Documents 1 and 2 described above give a high intermetal friction coefficient, they are not necessarily sufficient in terms of the anti-shudder life of the wet clutch.
- An object of the present invention is to provide a lubricating oil composition having a high coefficient of friction between metals and a long anti-shudder life of a wet clutch, and a continuously variable transmission filled with the composition.
- a lubricating oil composition comprising the following components (A) to (C) in a lubricating base oil.
- R 1 is a hydrocarbon group having 16 or more and 22 or less carbon atoms, and R 2 and R 3 are each independently a hydrocarbon group having 1 or 2 carbon atoms, provided that R 2 and R 3 may be bonded to each terminal to form a heterocyclic ring.
- B At least one of acid phosphate ester and acid phosphite
- C at least one of metal sulfonate, metal phenate and metal salicylate
- the lubricating oil composition is characterized in that the nitrogen content resulting from the component (A) is 0.005% by mass or more based on the total amount of the composition.
- the phosphorus content attributable to the component (B) is 0.02% by mass or more based on the total amount of the composition.
- the component (C) is at least one of alkaline earth metal sulfonate, alkaline earth metal phenate, and alkaline earth metal salicylate. Oil composition.
- the lubricating oil composition described above, wherein the metal content resulting from the component (C) is 0.01 to 0.1% by mass based on the total amount of the composition.
- the lubricating oil composition of the present invention since three specific components are blended in the lubricating base oil, the coefficient of friction between metals is high and the wetter clutch anti-shudder life is also long. Therefore, the lubricating oil composition of the present invention is particularly preferable for a continuously variable transmission having a torque converter with a lock-up clutch.
- the lubricating oil composition of the present invention is obtained by blending the above-mentioned components (A) to (C) with a lubricating base oil. Details will be described below.
- the lubricating base oil used in the present invention may be at least one of mineral oil and synthetic oil, that is, each may be used alone or in combination of two or more, or mineral oil and synthetic oil may be used in combination. . These mineral oils and synthetic oils are not particularly limited, but are suitable as long as they are generally used as base oils for transmissions. In particular, the kinematic viscosity at 100 ° C.
- kinematic viscosity is preferably 1 mm 2 / s to 50 mm 2 / s, particularly 2 mm 2 / s to 15 mm 2 / s. If the kinematic viscosity is too high, the low-temperature viscosity is deteriorated, and if it is too low, there is a risk that wear at sliding parts such as gear bearings and clutches of the continuously variable transmission increases.
- the pour point which is an index of the low temperature fluidity of the lubricating base oil is not particularly limited, but is preferably ⁇ 10 ° C. or lower, particularly preferably ⁇ 15 ° C. or lower.
- the lubricating base oil preferably has a saturated hydrocarbon component of 90% by mass or more, a sulfur content of 0.03% by mass or less, and a viscosity index of 100 or more.
- the saturated hydrocarbon component is less than 90% by mass, there is a possibility that a disadvantage that the deteriorated product increases.
- the sulfur content is more than 0.03% by mass, there is a risk that the degradation product similarly increases.
- the viscosity index is smaller than 100, there is a possibility that inconvenience that wear at a high temperature increases.
- mineral oil examples include naphthenic mineral oil, paraffinic mineral oil, GTL WAX, and the like. Specific examples include light neutral oil, medium neutral oil, heavy neutral oil, bright stock and the like by solvent refining or hydrogenation refining.
- synthetic oils include polybutene or hydrides thereof, poly ⁇ -olefins (1-octene oligomers, 1-decene oligomers, etc.), ⁇ -olefin copolymers, alkylbenzenes, polyol esters, dibasic acid esters, polyoxyalkylene glycols, Examples include polyoxyalkylene glycol esters, polyoxyalkylene glycol ethers, hindered esters, and silicone oils.
- the component (A) used in the present invention is a tertiary amine represented by the above formula (1).
- R 1 is a hydrocarbon group having 16 to 22 carbon atoms. Even if the number of carbon atoms is less than 16 or more than 22, it is difficult to increase the coefficient of friction between metals.
- hydrocarbon groups include alkyl groups, alkenyl groups, aryl groups, and aralkyl groups. Of these hydrocarbon groups, an aliphatic hydrocarbon group is preferable, and a saturated structure is particularly preferable.
- R 1 includes a hexadecyl group, a heptadecyl group, an octadecyl group, a nonadecyl group, an eicosyl group, a heneicosyl group, and a docosyl group.
- an octadecyl group is most preferred.
- the carbon chain portion may have a straight chain structure or a branched structure, but a straight chain structure is particularly preferable.
- R 2 and R 3 are each independently a hydrocarbon group having 1 or 2 carbon atoms. Specifically, they are a methyl group, an ethyl group, and a vinyl group. If at least one of R 2 and R 3 has 3 or more carbon atoms, the shudder prevention life may be adversely affected. Further, a methyl group or an ethyl group is preferable to a vinyl group having an unsaturated structure in terms of stability. Note that R 2 and R 3 may be bonded to each other to form a heterocyclic ring.
- the tertiary amine which is the component (A) in the present invention may be used alone or in combination of two or more. Further, the content of nitrogen resulting from the component (A) is preferably 0.005% by mass or more based on the total amount of the composition from the viewpoint of both the anti-shudder effect and the anti-shudder life, and 0.01% by mass More preferably, it is more preferably 0.02% by mass or more.
- the blending amount of the component (A) is increased too much, the effect of preventing shudder and the effect of preventing shudder life is saturated, so the content of nitrogen resulting from the component (A) is 0.1% by mass or less. It is desirable to limit the blending amount so that
- the component (B) used in the present invention is at least one of acidic phosphate ester and acidic phosphite ester.
- Specific examples include acidic phosphoric acid monoesters, acidic phosphoric acid diesters represented by the following formula (2), and acidic phosphorous acid esters represented by the following formula (3).
- R 4 , R 5 , R 6 , and R 7 are all hydrocarbon groups, particularly preferably hydrocarbon groups having 8 or less carbon atoms. When the carbon number of these hydrocarbon groups exceeds 8, the friction coefficient between metals may not be increased.
- the hydrocarbon group having 8 or less carbon atoms include an alkyl group having 8 or less carbon atoms, an alkenyl group having 8 or less carbon atoms, an aryl group having 6 to 8 carbon atoms, and an aralkyl group having 7 or 8 carbon atoms. be able to.
- the alkyl group and alkenyl group may be linear, branched or cyclic, for example, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl.
- Examples of the aryl group having 6 to 8 carbon atoms include a phenyl group, tolyl group, and xylyl group.
- Examples of the aralkyl group having 7 or 8 carbon atoms include a benzyl group, a phenethyl group, and a methylbenzyl group. It is done.
- acidic phosphoric acid monoester represented by the formula (2) examples include monoethyl acid phosphate, mono n-propyl acid phosphate, mono n-butyl acid phosphate, and mono-2-ethylhexyl acid phosphate.
- acidic phosphoric acid diester represented by the formula (2) examples include diethyl acid phosphate, di-n-propyl acid phosphate, di-n-butyl acid phosphate, and di-2-ethylhexyl acid phosphate.
- the acidic phosphite represented by the formula (3) include ethyl hydrogen phosphite, n-propyl hydrogen phosphite, n-butyl hydrogen phosphite, and 2-ethylhexyl hydrogen phosphite. Etc.
- the component (B) of the present invention one type of the above-described phosphoric acid compounds may be used alone, or two or more types may be used in combination.
- the phosphorus amount attributable to the component (B) is preferably 0.02% by mass or more, more preferably 0.03% by mass or more and 0.09% by mass or less, based on the total amount of the lubricating oil composition. (B) By making the compounding quantity of a component 0.02 mass% or more, an intermetallic friction coefficient can be raised.
- the component (C) used in the present invention is at least one of metal sulfonate, metal phenate, and metal salicylate.
- the metal compound is preferably one selected from alkaline earth metal sulfonates, alkaline earth metal phenates, and alkaline earth metal salicylates in terms of effects.
- the improvement effect of the friction coefficient between metals is synergistically demonstrated by combining (C) component of this invention with above-described (B) component.
- the alkaline earth metal sulfonate is preferably an alkaline earth of an alkyl aromatic sulfonic acid obtained by sulfonating an alkyl aromatic compound having a mass average molecular weight of 300 or more and 1500 or less, more preferably 400 or more and 700 or less.
- Metal salts, particularly magnesium salts and calcium salts can be mentioned, among which calcium salts are preferably used.
- alkaline earth metal phenates include alkylphenols, alkylphenol sulfides, alkaline earth metal salts of Mannich reactants of alkylphenols, particularly magnesium salts and calcium salts, among which calcium salts are particularly preferably used.
- Examples of the alkaline earth metal salicylates include alkaline earth metal salts of alkyl salicylic acid, particularly magnesium salts and calcium salts, among which calcium salts are preferably used.
- the above-mentioned alkaline earth metal compound preferably has a linear or branched alkyl group, and the alkyl group has 4 to 30 carbon atoms, more preferably 6 to 18 carbon atoms.
- the alkaline earth metal compound any of neutral salts, basic salts and overbased salts can be used.
- the total base number of the alkaline earth metal compound is preferably 10 mgKOH / g or more and 500 mgKOH / g or less, more preferably 15 mgKOH / g or more and 450 mgKOH / g or less.
- the compounding amount of the metal compound as the component (C) is preferably 0.01% by mass or more and 0.1% by mass or less, and 0.02% by mass or more, 0 based on the total amount of the composition as a metal conversion amount. More preferably, the content is 0.08% by mass or less. If the blending amount is less than 0.01% by mass, the effect is hardly exhibited, and even if it exceeds 0.1% by mass, an effect commensurate with the blending amount cannot be obtained. Moreover, you may use (C) component individually or in combination of 2 or more types.
- the above-described lubricating oil composition of the present invention has a high coefficient of friction between metals and a large torque transmission capacity, and also has a long shudder prevention life, a chain-type continuously variable transmission using a chain and a belt using a metal belt
- the present invention can be suitably used for various continuously variable transmissions such as a continuously variable transmission or a toroidal continuously variable transmission.
- additives In the lubricating oil composition of the present invention, other additives such as a viscosity index improver, pour point depressant, antiwear agent, friction modifier, none You may mix
- Viscosity index improvers include polymethacrylates, dispersed polymethacrylates, olefin copolymers (eg, ethylene-propylene copolymers), dispersed olefin copolymers, styrene copolymers (eg, styrene- Diene copolymer, styrene-isoprene copolymer, etc.).
- the blending amount of the viscosity index improver is about 0.5% by mass or more and 15% by mass or less based on the total amount of the composition from the viewpoint of the blending effect.
- the pour point depressant for example, polymethacrylate having a mass average molecular weight of about 10,000 to 150,000 is used.
- a preferable blending amount of the pour point depressant is about 0.01% by mass or more and 10% by mass or less based on the total amount of the composition.
- the antiwear agent examples include sulfur type antiwear agents such as thiophosphate metal salts (Zn, Pb, Sb, etc.) and thiocarbamic acid metal salts (Zn, etc.), phosphate esters (tricresyl phosphate), and the like. And phosphorus-based antiwear agents.
- a preferable blending amount of the antiwear agent is about 0.05% by mass or more and 5% by mass or less based on the total amount of the composition.
- the friction modifier examples include polyhydric alcohol partial esters such as neopentyl glycol monolaurate, trimethylolpropane monolaurate, and glycerin monooleate (oleic acid monoglyceride).
- a preferable blending amount of the friction modifier is about 0.05% by mass or more and 4% by mass or less based on the composition.
- the ashless dispersant include succinimides, boron-containing succinimides, benzylamines, boron-containing benzylamines, succinic esters, monovalent or divalent typified by fatty acids or succinic acid. Examples thereof include amides of carboxylic acids.
- a preferable blending amount of the ashless dispersant is about 0.1% by mass or more and 20% by mass or less based on the total amount of the composition.
- the rust inhibitor examples include fatty acid, alkenyl succinic acid half ester, fatty acid soap, alkyl sulfonate, polyhydric alcohol fatty acid ester, fatty acid amide, oxidized paraffin, alkyl polyoxyethylene ether, and the like.
- a preferable blending amount of the rust inhibitor is about 0.01% by mass or more and 3% by mass or less based on the total amount of the composition.
- the metal deactivator for example, benzotriazole, thiadiazole and the like are used alone or in combination of two or more.
- a preferable blending amount of the metal deactivator is about 0.01% by mass or more and 5% by mass or less based on the total amount of the composition.
- the antifoaming agent for example, a silicone compound, an ester compound, or the like is used alone or in combination of two or more.
- a preferable blending amount of the antifoaming agent is about 0.05% by mass or more and 5% by mass or less based on the total amount of the composition.
- the antioxidant hindered phenol-based or amine-based, zinc alkyldithiophosphate (ZnDTP) or the like is preferably used.
- ZnDTP zinc alkyldithiophosphate
- the phenol type bisphenol type and ester group-containing phenol type are particularly suitable.
- As the amine system a dialkyldiphenylamine system or a naphthylamine system is suitable.
- a preferable blending amount of the antioxidant is about 0.05% by mass or more and 7% by mass or less.
- Friction material Cellulose disc / steel plate Oil amount: 150ml Surface pressure: 1 MPa Oil temperature: 120 ° C Sliding speed: 0.9m / s Sliding time: 30 minutes Rest time: 1 minute Performance measurement: ⁇ -V characteristics measured every 24 hours after start (running conditions are: oil temperature: 80 ° C., surface pressure: 1 MPa, sliding speed: 0.6 m / s , Time: 30 minutes)
- the lubricating oil composition of the present invention obtained by blending the components (A) to (C) with the base oil has a sufficiently high coefficient of friction between metals and a clutch.
- the shudder prevention life is also long enough. Therefore, it is understood that the lubricating oil composition of the present invention can be preferably applied to a continuously variable transmission.
- the clutch shudder prevention life is short.
- Comparative Example 1 although a tertiary amine is blended, since the structure is different from the component (A) in the present invention, the clutch shudder prevention life is short.
- the present invention can be used for a lubricating oil composition suitable for a continuously variable transmission and a continuously variable transmission filled with the composition.
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Abstract
Description
(1)潤滑油基油に、以下の(A)から(C)までの成分を配合してなることを特徴とする潤滑油組成物。
(A)下記式(1)で示される3級アミン
(式中、R1は、炭素数が16以上、22以下の炭化水素基であり、R2とR3は、各々独立に炭素数1または2の炭化水素基である。ただし、R2とR3は、各々の末端部が結合して複素環を形成してもよい。)
(B)酸性リン酸エステルおよび酸性亜リン酸エステルのうち少なくともいずれか1種
(C)金属スルフォネート、金属フェネートおよび金属サリチレートのうち少なくともいずれか1種
(3)上述の潤滑油組成物において、前記(B)成分に起因するリンの含有量が組成物全量基準で0.02質量%以上であることを特徴とする潤滑油組成物。
(4)上述の潤滑油組成物において、前記(C)成分がアルカリ土類金属スルフォネート、アルカリ土類金属フェネート、およびアルカリ土類金属サリチレートのうち少なくともいずれか1種であることを特徴とする潤滑油組成物。
(5)上述の潤滑油組成物において、前記(C)成分に起因する金属の含有量が組成物全量基準で0.01~0.1質量%であることを特徴とする潤滑油組成物。
(6)上述の潤滑油組成物を充填したことを特徴とする無段変速機。
〔潤滑油基油〕
本発明に用いられる潤滑油基油としては、鉱油と合成油とのうちの少なくともいずれか一方、すなわちそれぞれ単独あるいは2種以上を組み合わせて用いたり、鉱油と合成油とを組み合わせて用いてもよい。
これらの鉱油や合成油としては特に制限はないが、一般に変速機の基油として用いられるものであれば好適である。特に、100℃における動粘度が1mm2/s以上、50mm2/s以下、特に2mm2/s以上、15mm2/s以下が好ましい。動粘度が高すぎると低温粘度が悪化し、低すぎると無段変速機のギヤ軸受、クラッチなどの摺動部位における摩耗が増大するおそれがある。
さらに、潤滑油基油としては、飽和炭化水素成分が90質量%以上、硫黄分が0.03質量%以下、粘度指数が100以上であることが好ましい。ここで、飽和炭化水素成分が90質量%より少なくなると、劣化生成物が多くなるという不都合が生じるおそれがある。また、硫黄分が0.03質量%より多くなっても、同様に劣化生成物が多くなるという不都合が生じるおそれがある。さらに、粘度指数が100より小さくなると、高温での摩耗が増大するという不都合が生じるおそれがある。
一方、合成油としては、ポリブテンまたはその水素化物、ポリα-オレフィン(1-オクテンオリゴマー、1-デセンオリゴマー等)、α-オレフィンコポリマー、アルキルベンゼン、ポリオールエステル、二塩基酸エステル、ポリオキシアルキレングリコール、ポリオキシアルキレングリコールエステル、ポリオキシアルキレングリコールエーテル、ヒンダードエステル、シリコーンオイルなどが挙げられる。
本発明に用いられる(A)成分は、上述の式(1)で示される3級アミンである。ここで、R1は、炭素数が16以上、22以下の炭化水素基である。炭素数が16未満であっても、22を超えても、金属間摩擦係数を上げることが困難となる。このような炭化水素基としては、アルキル基、アルケニル基、アリール基、およびアラルキル基などを挙げることができる。これらの炭化水素基のうち、脂肪族の炭化水素基であることが好ましく、特に飽和構造のものがより好ましい。それ故、R1としては、ヘキサデシル基、ヘプタデシル基、オクタデシル基、ノナデシル基、エイコシル基、ヘネイコシル基、およびドコシル基が挙げられる。このうち、オクタデシル基がもっとも好ましい。
また、炭素鎖部分は、直鎖構造であっても分岐構造であってもよいが、特に直鎖構造のものが好ましい。
また、(A)成分に起因する窒素の含有量は、シャダー防止効果およびシャダー防止寿命の双方の観点より、組成物全量基準で0.005質量%以上であることが好ましく、0.01質量%以上であることがより好ましく、0.02質量%以上であることがさらに好ましい。ただし、(A)成分の配合量をあまり多くしても、シャダー防止効果およびシャダー防止寿命の効果が飽和してしまうので、(A)成分に起因する窒素の含有量が0.1質量%以下となるように配合量を制限することが望ましい。
本発明に用いられる(B)成分は、酸性リン酸エステルおよび酸性亜リン酸エステルのうち少なくともいずれか1種である。具体的には、以下の式(2)で示される酸性リン酸モノエステル、酸性リン酸ジエステル、および式(3)で示される酸性亜リン酸エステルが挙げられる。
炭素数8以下の炭化水素基としては、炭素数8以下のアルキル基、炭素数8以下のアルケニル基、炭素数6から8までのアリ-ル基、炭素数7か8のアラルキル基などを挙げることができる。前記アルキル基およびアルケニル基は直鎖状、分岐状、環状のいずれであってもよく、例えば、メチル基、エチル基、n-プロピル基、イソプロピル基、n-ブチル基、イソブチル基,sec-ブチル基、tert-ブチル基、各種ペンチル基、各種ヘキシル基、各種ヘプチル基、各種オクチル基、シクロペンチル基、シクロヘキシル基、アリル基、プロペニル基、各種ブテニル基、各種ヘキセニル基、各種オクテニル基、シクロペンテニル基、シクロヘキセニル基などが挙げられる。
本発明の(B)成分は、上述したリン酸化合物のうち1種を単独で用いてもよく、2種以上を組み合わせて用いてもよい。(B)成分に起因するリン量は、潤滑油組成物全量基準で0.02質量%以上であることが好ましく、0.03質量%以上、0.09質量%以下であることがより好ましい。(B)成分の配合量を0.02質量%以上とすることで、金属間摩擦係数を高めることができる。
本発明に用いられる(C)成分は、金属スルフォネート、金属フェネートおよび金属サリチレートのうち少なくともいずれか1種である。このような金属化合物を配合することで、金属間摩擦係数が高くなる。金属化合物としては、特に、アルカリ土類金属スルフォネート、アルカリ土類金属フェネートおよびアルカリ土類金属サリシレートから選ばれる1種であることが効果の点で好ましい。そして、本発明の(C)成分を、前記した(B)成分と組み合わせることにより、金属間摩擦係数の向上効果が相乗的に発揮される。
アルカリ土類金属フェネートとしては、アルキルフェノール、アルキルフェノールサルファイド、アルキルフェノールのマンニッヒ反応物のアルカリ土類金属塩、特にマグネシウム塩やカルシウム塩等が挙げられ、中でもカルシウム塩が特に好ましく用いられる。
アルカリ土類金属サリシレートとしては、アルキルサリチル酸のアルカリ土類金属塩、特にマグネシウム塩やカルシウム塩等が挙げられ、中でもカルシウム塩が好ましく用いられる。
本発明の潤滑油組成物には、本発明の効果を損なわない範囲で、必要に応じてさらに他の添加剤、例えば粘度指数向上剤、流動点降下剤、摩耗防止剤、摩擦調整剤、無灰系分散剤、防錆剤、金属不活性化剤、消泡剤、および酸化防止剤等を配合してもよい。
流動点降下剤としては、例えば質量平均分子量が1万以上、15万以下程度のポリメタクリレートなどが用いられる。流動点降下剤の好ましい配合量は、組成物全量基準で、0.01質量%以上、10質量%以下程度である。
摩擦調整剤としては、例えば、ネオペンチルグリコールモノラウレート、トリメチロールプロパンモノラウレート、グリセリンモノオレエート(オレイン酸モノグリセライド)などの多価アルコール部分エステルなどが挙げられる。摩擦調整剤の好ましい配合量は、組成物基準で0.05質量%以上、4質量%以下程度である。
無灰系分散剤としては、例えばコハク酸イミド類、ホウ素含有コハク酸イミド類、ベンジルアミン類、ホウ素含有ベンジルアミン類、コハク酸エステル類、脂肪酸あるいはコハク酸で代表される一価または二価のカルボン酸のアミド類などが挙げられる。無灰系分散剤の好ましい配合量は、組成物全量基準で、0.1質量%以上、20質量%以下程度である。
金属不活性化剤としては、例えばベンゾトリアゾール、チアジアゾールなどが、単独もしくは2種以上を組み合わせて用いられる。金属不活性化剤の好ましい配合量は、組成物全量基準で0.01質量%以上、5質量%以下程度である。
酸化防止剤としては、ヒンダードフェノール系やアミン系のもの、あるいはアルキルジチオリン酸亜鉛(ZnDTP)などが好ましく用いられる。フェノール系としては、特にビスフェノール系やエステル基含有フェノール系のものが好適である。アミン系としては、ジアルキルジフェニルアミン系やナフチルアミン系が好適である。酸化防止剤の好ましい配合量は、0.05質量%以上、7質量%以下程度である。
〔実施例1および2、比較例1から6まで〕
表1に示す組成の潤滑油組成物を調製し、以下のようにして金属間摩擦係数およびクラッチシャダー防止寿命を測定した。結果も併せて表1に示す。
ASTM D2174に記載されたブロックオンリング試験機(LFW-1)を用いて、金属間摩擦係数を測定した。具体的な試験条件を以下に示す。
・試験治具:
リング:Falex S-10 Test Ring(SAE4620 Steel)
ブロック:Falex H-60 Test Block(SAE01 Steel)
・試験条件:
油温:110℃
荷重:1176N
滑り速度:1.0、0.5、0.25、0.125、0.075m/sの順で各5分間保持
摩擦係数:滑り速度変更前の30秒間における測定値
(ならし条件は、油温:110℃、荷重:1176N、滑り速度:1m/s、時間:30分間)
JASO M349-1998に準拠して評価した。具体的な試験条件は以下の通りであり、1rpmと50rpmとの摩擦係数の比(μ1/μ50)が1以下になるまでの時間を測定してクラッチシャダー防止寿命とした。
<耐久試験条件>
摩擦材:セルロース系ディスク/スチールプレート
油 量:150ml
面 圧:1MPa
油 温:120℃
滑り速度:0.9m/s
滑り時間:30分
休止時間:1分
性能測定:開始以降24時間おきにμ-V特性を測定
(ならし条件は、油温:80℃、面圧:1MPa、滑り速度:0.6m/s、時間:30分間)
表1における実施例1、2の結果より、基油に(A)成分から(C)成分までを配合してなる本発明の潤滑油組成物は、金属間摩擦係数が十分に高いとともに、クラッチシャダー防止寿命も十分に長いものとなっている。それ故、本発明の潤滑油組成物は、無段変速機用として好ましく適用できることが理解される。
一方、比較例1から4までの潤滑油組成物では、本発明における(A)成分が配合されていないため、クラッチシャダー防止寿命が短いものとなっている。特に、比較例1では、3級アミンを配合しているものの、本発明における(A)成分とは構造が異なるため、クラッチシャダー防止寿命が短い。また、比較例5では、本発明における(C)成分が配合されていないため、金属間摩擦係数が小さくなっており、トルク伝達性能に劣ることがわかる。比較例6では、本発明における(B)成分が配合されていないため、やはり金属間摩擦係数が小さくなっており、トルク伝達性能に劣ることがわかる。
Claims (6)
- 請求項1に記載の潤滑油組成物において、
前記(A)成分に起因する窒素の含有量が組成物全量基準で0.005質量%以上である
ことを特徴とする潤滑油組成物。 - 請求項1または請求項2に記載の潤滑油組成物において、
前記(B)成分に起因するリンの含有量が組成物全量基準で0.02質量%以上である
ことを特徴とする潤滑油組成物。 - 請求項1から請求項3までのいずれか一項に記載の潤滑油組成物において、
前記(C)成分がアルカリ土類金属スルフォネート、アルカリ土類金属フェネート、およびアルカリ土類金属サリチレートのうち少なくともいずれか1種である
ことを特徴とする潤滑油組成物。 - 請求項1から請求項4までのいずれか一項に記載の潤滑油組成物において、
前記(C)成分に起因する金属の含有量が組成物全量基準で0.01~0.1質量%である
ことを特徴とする潤滑油組成物。 - 請求項1から請求項5までのいずれか一項に記載の潤滑油組成物を充填したことを特徴とする無段変速機。
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JP2013189565A (ja) * | 2012-03-14 | 2013-09-26 | Idemitsu Kosan Co Ltd | 潤滑油組成物 |
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US10954463B2 (en) | 2016-03-15 | 2021-03-23 | Idemitsu Kosan Co., Ltd. | Lubricating oil composition, lubricating method, and transmission |
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JPWO2019167812A1 (ja) * | 2018-02-28 | 2021-02-12 | 出光興産株式会社 | 潤滑油組成物 |
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JP7304336B2 (ja) | 2018-02-28 | 2023-07-06 | 出光興産株式会社 | 潤滑油組成物 |
Also Published As
Publication number | Publication date |
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JP5816554B2 (ja) | 2015-11-18 |
US20120149619A1 (en) | 2012-06-14 |
EP2481790A4 (en) | 2013-06-05 |
EP2481790B1 (en) | 2016-11-23 |
JPWO2011037054A1 (ja) | 2013-02-21 |
US9506010B2 (en) | 2016-11-29 |
EP2481790A1 (en) | 2012-08-01 |
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