JP5714529B2 - 内燃機関用潤滑油組成物 - Google Patents
内燃機関用潤滑油組成物 Download PDFInfo
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- JP5714529B2 JP5714529B2 JP2012069012A JP2012069012A JP5714529B2 JP 5714529 B2 JP5714529 B2 JP 5714529B2 JP 2012069012 A JP2012069012 A JP 2012069012A JP 2012069012 A JP2012069012 A JP 2012069012A JP 5714529 B2 JP5714529 B2 JP 5714529B2
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- lubricating oil
- internal combustion
- oil composition
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- 239000010687 lubricating oil Substances 0.000 title claims description 110
- 239000000203 mixture Substances 0.000 title claims description 106
- 238000002485 combustion reaction Methods 0.000 title claims description 81
- -1 phosphorus compound Chemical class 0.000 claims description 94
- 229910052751 metal Inorganic materials 0.000 claims description 61
- 239000002184 metal Substances 0.000 claims description 61
- 239000011593 sulfur Substances 0.000 claims description 61
- 229910052717 sulfur Inorganic materials 0.000 claims description 61
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 60
- 239000002199 base oil Substances 0.000 claims description 48
- 239000003599 detergent Substances 0.000 claims description 37
- 239000011574 phosphorus Substances 0.000 claims description 36
- 229910052698 phosphorus Inorganic materials 0.000 claims description 36
- 150000001875 compounds Chemical class 0.000 claims description 29
- 230000001050 lubricating effect Effects 0.000 claims description 26
- 239000005078 molybdenum compound Substances 0.000 claims description 26
- 150000002752 molybdenum compounds Chemical class 0.000 claims description 26
- 239000000654 additive Substances 0.000 claims description 23
- 125000003118 aryl group Chemical group 0.000 claims description 22
- 239000002270 dispersing agent Substances 0.000 claims description 19
- 150000003839 salts Chemical class 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 18
- 229960001860 salicylate Drugs 0.000 claims description 18
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 claims description 18
- 230000000996 additive effect Effects 0.000 claims description 14
- 238000001704 evaporation Methods 0.000 claims description 10
- 230000008020 evaporation Effects 0.000 claims description 10
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- 125000004432 carbon atom Chemical group C* 0.000 description 50
- 125000000217 alkyl group Chemical group 0.000 description 43
- 239000002585 base Substances 0.000 description 39
- KZNICNPSHKQLFF-UHFFFAOYSA-N dihydromaleimide Natural products O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 description 36
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- 230000003647 oxidation Effects 0.000 description 25
- 238000007254 oxidation reaction Methods 0.000 description 25
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- 229910052796 boron Inorganic materials 0.000 description 20
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- 229910052799 carbon Inorganic materials 0.000 description 15
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- 239000011733 molybdenum Substances 0.000 description 15
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 14
- 230000003078 antioxidant effect Effects 0.000 description 14
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- 238000012423 maintenance Methods 0.000 description 12
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- 238000012360 testing method Methods 0.000 description 10
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- KHYKFSXXGRUKRE-UHFFFAOYSA-J molybdenum(4+) tetracarbamodithioate Chemical compound C(N)([S-])=S.[Mo+4].C(N)([S-])=S.C(N)([S-])=S.C(N)([S-])=S KHYKFSXXGRUKRE-UHFFFAOYSA-J 0.000 description 8
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- 150000004678 hydrides Chemical class 0.000 description 7
- 125000001183 hydrocarbyl group Chemical group 0.000 description 7
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- WMYJOZQKDZZHAC-UHFFFAOYSA-H trizinc;dioxido-sulfanylidene-sulfido-$l^{5}-phosphane Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S WMYJOZQKDZZHAC-UHFFFAOYSA-H 0.000 description 7
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 6
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- WGQKYBSKWIADBV-UHFFFAOYSA-N benzylamine Chemical compound NCC1=CC=CC=C1 WGQKYBSKWIADBV-UHFFFAOYSA-N 0.000 description 6
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 6
- 238000004939 coking Methods 0.000 description 6
- 239000000470 constituent Substances 0.000 description 6
- 150000004665 fatty acids Chemical class 0.000 description 6
- 239000002480 mineral oil Substances 0.000 description 6
- 235000010446 mineral oil Nutrition 0.000 description 6
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 6
- VLAPMBHFAWRUQP-UHFFFAOYSA-L molybdic acid Chemical class O[Mo](O)(=O)=O VLAPMBHFAWRUQP-UHFFFAOYSA-L 0.000 description 6
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- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 6
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 5
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 5
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- 230000000052 comparative effect Effects 0.000 description 5
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- 239000000047 product Substances 0.000 description 5
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 5
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 4
- 125000003277 amino group Chemical group 0.000 description 4
- 239000002518 antifoaming agent Substances 0.000 description 4
- 239000004327 boric acid Substances 0.000 description 4
- 150000001639 boron compounds Chemical class 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000006078 metal deactivator Substances 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 235000010755 mineral Nutrition 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- LSHROXHEILXKHM-UHFFFAOYSA-N n'-[2-[2-[2-(2-aminoethylamino)ethylamino]ethylamino]ethyl]ethane-1,2-diamine Chemical compound NCCNCCNCCNCCNCCN LSHROXHEILXKHM-UHFFFAOYSA-N 0.000 description 4
- 230000003472 neutralizing effect Effects 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 4
- 150000007524 organic acids Chemical class 0.000 description 4
- 150000003873 salicylate salts Chemical class 0.000 description 4
- FAGUFWYHJQFNRV-UHFFFAOYSA-N tetraethylenepentamine Chemical compound NCCNCCNCCNCCN FAGUFWYHJQFNRV-UHFFFAOYSA-N 0.000 description 4
- 150000003751 zinc Chemical class 0.000 description 4
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- 239000011701 zinc Substances 0.000 description 4
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 3
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 3
- 239000004480 active ingredient Substances 0.000 description 3
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- 125000001841 imino group Chemical group [H]N=* 0.000 description 3
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- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
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- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 3
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- BRESEFMHKFGSDY-UHFFFAOYSA-N molybdenum;pyrrolidine-2,5-dione Chemical class [Mo].O=C1CCC(=O)N1 BRESEFMHKFGSDY-UHFFFAOYSA-N 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
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- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical class [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 description 3
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Description
芳香族分が10〜50質量%であり、100℃における動粘度が8〜12mm 2 /sであり、且つNOACK蒸発量が5質量%以下である潤滑油基油(A)に、
硫黄を含有しない有機リン化合物、及びそれらの金属塩とそれらのアミン塩、並びにこれらの誘導体からなる群より選ばれる少なくとも1種のリン化合物(B)を組成物全量基準でリン量として0.01〜0.1質量%、及び有機モリブデン化合物(C)を組成物全量基準でモリブデン量として0.005〜0.1質量%含有することを特徴とする
内燃機関用潤滑油組成物である。
(I)炭素数40〜400のアルキル基又はアルケニル基を分子中に少なくとも1個有するコハク酸イミド、或いはその誘導体。
(II)炭素数40〜400のアルキル基又はアルケニル基を分子中に少なくとも1個有するベンジルアミン、或いはその誘導体。
(III)炭素数40〜400のアルキル基又はアルケニル基を分子中に少なくとも1個有するポリアミン、或いはその誘導体。
R12−NH−(CH2CH2NH)q−H ・・・(7)
実施例1〜3及び比較例1〜4においては、それぞれ以下に示す潤滑油基油及び添加剤を用いて表1に示す組成を有する潤滑油組成物を調製した。なお、表1中、基油の量は、基油中の含有割合であり、一方、添加剤の量は、組成物全量基準での含有量である。また、表1に、各実施例又は比較例で得られた潤滑油組成物の性状、及び、含有元素量(いずれも元素換算値)を併せて示す。
日本トライボロジー会議予稿集1992、10、465に準拠した方法にて試験油にNOx含有ガスを吹き込み、強制劣化させたときの塩基価(塩酸法)及び酸価の経時変化を測定した。本試験における試験温度は140℃、NOx含有ガス中のNOx濃度は1185ppmとした。NOxガスの吹き込み開始から24時間ごとの塩基価残存率を表1に示す。塩基価残存率の減少が小さいものほど、内燃機関で使用されるようなNOx存在下においても塩基価維持性能が高く、より長時間使用できる酸化安定性油であることを示している。
パネルコーキング試験は、Federal Test Method 791B-3462に準拠し、パネル温度320℃、油温100℃、テスト時間3時間として、アルミニウムパネルに付着するカーボン量(mg)を評価することにより清浄性を評価した。試験条件を以下に示す。
・スプラッシュ回転数:1000rpm
・スプラッシュOn/Off=15s/45s
基油2:40℃での動粘度=84.43mm2/s、100℃での動粘度=10.25mm2/s、粘度指数=102、硫黄分=0.10質量%、芳香族分=27.2質量%、%CA=4.1
基油3:40℃での動粘度=18.3mm2/s、100℃での動粘度=4.063mm2/s、粘度指数=123、硫黄分=9質量ppm、芳香族分=3.8質量%、%CA=0
基油4:40℃での動粘度=35.76mm2/s、100℃での動粘度=6.358mm2/s、粘度指数=130、硫黄分=6質量ppm、芳香族分=4.8質量%、%CA=0
基油5:40℃での動粘度=46.71mm2/s、100℃での動粘度=7.595mm2/s、粘度指数=129、硫黄分<1質量ppm、芳香族分=0.3質量%、%CA=0
ZDTP:硫黄を含有する有機リン化合物の亜鉛塩、ジアルキルジチオリン酸亜鉛、R=nC8、P含有量=9.0質量%
MoDTC:炭素数8と13のアルキル基のモリブデンジチオカーバメート、Mo含有量=10質量%,S含有量=11質量%
清浄剤2(サリシ2):炭素数20〜30のアルキル基を持つカルシウムサリシレート、Ca含有量=2.1質量%、塩基価=60mgKOH/g
清浄剤3(スルホ):炭素数16〜26のアルキル基を持つカルシウムスルホネート、Ca含有量=12.0質量%、塩基価=300mgKOH/g
無灰分散剤:ポリアルケニルコハク酸イミド(PTEPA)、Mw=4000〜6000、N含有量=1.5質量%、B含有量=0.5質量%
VM:ポリメタクリレートとオレフィンコポリマーのミックスポリマー
PPD:ポリメタクリレート(メタクリレートのアルキル基:nC12〜nC18)
金属不活性化剤:トリアゾール誘導体
アミン系酸化防止剤:モノブチルフェニルモノオクチルフェニルアミン、N含有量=4.5質量%
フェノール系酸化防止剤:ヒンダードフェノール
消泡剤:シリコーンオイル(ジメチルシリコン)
Claims (6)
- 芳香族分が10〜50質量%であり、100℃における動粘度が8〜12mm 2 /sであり、且つNOACK蒸発量が5質量%以下である潤滑油基油(A)に、
硫黄を含有しない有機リン化合物、及びそれらの金属塩とそれらのアミン塩、並びにこれらの誘導体からなる群より選ばれる少なくとも1種のリン化合物(B)を組成物全量基準でリン量として0.01〜0.1質量%、及び有機モリブデン化合物(C)を組成物全量基準でモリブデン量として0.005〜0.1質量%含有することを特徴とする内燃機関用潤滑油組成物。 - 前記有機モリブデン化合物(C)が硫黄を含有しない有機モリブデン化合物であることを特徴とする請求項1に記載の内燃機関用潤滑油組成物。
- 硫酸灰分が1質量%以下であることを特徴とする請求項1又は2に記載の内燃機関用潤滑油組成物。
- 更に、粘度指数向上剤(D)、金属サリシレート系清浄剤(E)、及び無灰分散剤(G)から選ばれる少なくとも1種の添加剤を含有することを特徴とする請求項1〜3のいずれか一項に記載の内燃機関用潤滑油組成物。
- 前記内燃機関がガスエンジンであることを特徴とする請求項1〜4のいずれか一項に記載の内燃機関用潤滑油組成物。
- 請求項1〜4のいずれか一項に記載の内燃機関用潤滑油組成物を使用することにより、内燃機関のピストン燃焼面及びピストン燃焼面裏側のデポジットを減少させる方法。
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