EP1016706A2 - Schmierölzusammensetzungen für Brennkraftmaschinen mit verbesserter thermischer Oxidationsstabilität und mit verbesserter Reinigungswirkung - Google Patents

Schmierölzusammensetzungen für Brennkraftmaschinen mit verbesserter thermischer Oxidationsstabilität und mit verbesserter Reinigungswirkung Download PDF

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Publication number
EP1016706A2
EP1016706A2 EP99310591A EP99310591A EP1016706A2 EP 1016706 A2 EP1016706 A2 EP 1016706A2 EP 99310591 A EP99310591 A EP 99310591A EP 99310591 A EP99310591 A EP 99310591A EP 1016706 A2 EP1016706 A2 EP 1016706A2
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EP
European Patent Office
Prior art keywords
lubricating oil
oil composition
detergent
overbased
alkyloxybenzenesulfonate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
EP99310591A
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English (en)
French (fr)
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EP1016706A3 (de
Inventor
Horoyuki Nagamatsu
Koichi Fujita
Hiroki Ando
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chevron Oronite Japan Ltd
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Oronite Japan Ltd
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Application filed by Oronite Japan Ltd filed Critical Oronite Japan Ltd
Publication of EP1016706A2 publication Critical patent/EP1016706A2/de
Publication of EP1016706A3 publication Critical patent/EP1016706A3/de
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    • 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
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    • C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
    • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
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    • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
    • C10M129/26—Carboxylic acids; Salts thereof
    • C10M129/48—Carboxylic acids; Salts thereof having carboxyl groups bound to a carbon atom of a six-membered aromatic ring
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    • C10M159/12—Reaction products
    • C10M159/20—Reaction mixtures having an excess of neutralising base, e.g. so-called overbasic or highly basic products
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    • C10N2040/255—Gasoline engines
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/25—Internal-combustion engines
    • C10N2040/255—Gasoline engines
    • C10N2040/28—Rotary engines

Definitions

  • the present invention relates to a lubricating oil composition favorably employable for internal combustion engines, particularly trunk piston engines such as land generators and ships.
  • the lubricating oil composition of the present invention provides improved thermal oxidation durability and detergency when used to lubricate an internal combustion engine.
  • Lubricating oils for internal combustion engines are formulated from a range of base fluids and chemical additives.
  • the base fluid has several functions but primarily it is the lubricant, providing a fluid layer separating moving surfaces or removing heat and wear particles while keeping friction at a minimum. Many of the properties of lubricating oils are enhanced or created by the addition of special chemical additives in the base fluid.
  • compositions containing a combination of an overbased alkyloxybenzenesulfonate (e.g., overbased phenoxysulfonate) and a zinc dialkyldithiophosphate (ZnDTP); a combination of an overbased phenoxysulfonate and an alkenylsuccinimide ashless dispersant; a combination of an overbased phenoxysulfonate, ZnDTP and an ashless dispersant; a combination of an overbased phenoxysulfonate and a nonmetallic oxidation inhibitor such as phenolic oxidation inhibitor and an alkylated diphenylamine oxidation inhibitor; a combination of an overbased phenoxysulfonate, ZnDTP and a nonmetallic oxidation inhibitor; a combination of an overbased phenoxysulfonate, an ashless dispersant, ZnDTP and/or a nonmetallic oxidation inhibitor; a combination of an overbased alkyloxy
  • a lubricating oil composition which is satisfactorily employable under the severe operating conditions typically observed with internal combustion engines operated at elevated temperatures, particularly trunk piston engines such as land generators and ships.
  • the lubricating oil composition provided by the present invention has enough stability against thermal oxidation and enough detergency to satisfactorily lubricate the engine at an elevated temperature.
  • the present invention relates to a lubricating oil composition having improved thermal oxidation durability and detergency for internal combustion engines, particularly trunk piston engines such as land generators and ships. The improvement is particularly noticeable at elevated temperatures.
  • the lubricating oil composition of the present invention comprises the product produced by blending:
  • the present invention relates to a lubricating oil composition for internal combustion engines comprising the product produced by blending:
  • the present invention further relates to a concentrate comprising the product produced by blending:
  • the present invention further relates to a concentrate comprising the product produced by blending:
  • the present invention relates to a method of improving the thermal oxidation durability and detergency of an internal combustion engine by lubricating the internal combustion engine with the lubricating oil composition of the present invention.
  • the present invention further provides a method of producing a lubricating oil composition by blending a mixture of:
  • the present invention is based upon the unexpected discovery that the thermal oxidation durability and detergency in an internal combustion engine can be improved by lubricating such an engine with the lubricating oil composition of the present invention.
  • the lubricating oil composition of the present invention has enough stability against thermal oxidation and enough detergency at an elevated temperature to comply with the severe operating conditions for diesel engines, particularly trunk piston engines such as land generators and ships.
  • the present invention relates to a lubricating oil composition that improves the thermal oxidation durability and detergency in internal combustion engines.
  • a lubricating oil composition that improves the thermal oxidation durability and detergency in internal combustion engines.
  • TAN Total Acid Number
  • ASTM D 664 or any other equivalent procedure.
  • TBN Total Base Number
  • Total Base Number refers to the amount of base equivalent to one milligram of KOH in one gram of additive.
  • internal olefins we mean an olefin wherein the double bond is at other than the 1-, 2-, or 3- position of the alkene.
  • the base oil of lubricating viscosity used in the present invention may be mineral oils or synthetic oils of viscosity suitable for use in the crankcase of an internal combustion engine such as gasoline engines and diesel engine which include marine engines.
  • Crankcase lubricating oils ordinarily have a kinematic viscosity of 22 to 300 mm 2 /s at 40°C, preferably 22 to 140 mm 2 /s at 40°C.
  • the lubricating base oils may be derived from synthetic or natural sources.
  • Mineral oils for use as the base oil in this invention include paraffinic, naphthenic and other oils that are ordinarily used in lubricating oil compositions and can be obtained from crude oil by distillation (under atmospheric or reduced pressure) and purification (e.g., solvent extraction, hydrocracking, solvent dewaxing, hydrogenation refining).
  • Synthetic oils include both hydrocarbon synthetic oils and synthetic esters.
  • Useful synthetic hydrocarbon oils include liquid polymers of alpha olefins having the proper viscosity. Especially useful are the hydrogenated liquid oligomers of C 6 to C 12 alpha olefins such as 1-decene trimer. Likewise, alkyl benzenes of proper viscosity, such as didodecyl benzene, can be used.
  • Useful synthetic esters include the esters of monocarboxylic acids and polycarboxylic acids, as well as mono-hydroxy alkanols and polyols.
  • Typical examples are didodecyl adipate, pentaerythritol tetracaproate, di-2-ethylhexyl adipate, dilaurylsebacate, and the like.
  • Complex esters prepared from mixtures of mono- and dicarboxylic acids and mono- and dihydroxy alkanols can also be used.
  • Blends of mineral oils with synthetic oils are also useful.
  • An overbased alkyloxybenzenesulfonate detergent is incorporated in an amount of 1.0 to 20.0 wt. %, preferably 2.0 to 10.0 wt. %, and most preferably 4.0 to 8.0 wt. %, based on the total amount of the lubricating oil composition of the present invention.
  • a hydrocarbon oil which has been used in preparing the overbased alkyloxybenzenesulfonate, is contained in a small amount, and hence the above-mentioned amount for the detergent includes not only the active component but also the remaining hydrocarbon oil.
  • the amount of the overbased calcium alkyloxybenzenesulfonate may be 0.1 to 2.5 wt. %, preferably 0.25 to 1.26 wt. %, in terms of the calcium content.
  • the overbased alkyloxybenzenesulfonate detergent can be prepared by the process described in the above Japanese Patent Provisional Publication No. H95-11015, the disclosure of which is hereby incorporated by reference.
  • the process comprises the steps of alkylating hydroxybenzene with an olefin having an internal olefin in an amount of 40 to 80 wt. % to give an alkyloxybenzene, sulfonating and neutralizing the alkyloxybenzene, and converting the obtained compound into an overbased form.
  • the detergent is a calcium salt of an overbased alkyloxybenzenesulfonic acid (i.e., overbased calcium alkyloxybenzenesulfonate) having a TBN (Total Base Number as defined by D2896) of at least 200, preferably at least 250 (mg KOH/g).
  • TBN Total Base Number as defined by D2896
  • the content of the overbased alkyloxybenzenesulfonate detergent in the lubricating oil composition is less than 1.0 wt. %, the oil composition cannot have enough thermal oxidation durability and detergency to prevent its viscosity increase.
  • the detergent is incorporated in an amount of more than 20.0 wt. %, the improved thermal oxidation durability and detergency corresponding to the increased amount are not expected.
  • the use of the overbased alkyloxybenzenesulfonate detergent in such a large amount is not economical.
  • a neutral or basic salicylate detergent is also incorporated into the lubricating oil composition in an amount of 1.0 to 20.0 wt. %, preferably 1.0 to 10.0 wt. %, and most preferably 2.0 to 8.0 wt %, based on the total amount of the lubricating oil composition of the present invention.
  • a hydrocarbon oil which has been used in preparing the salicylate, is contained in a small amount, and hence the above-mentioned amount for the detergent includes not only the active component but also the remaining hydrocarbon oil.
  • the amount of calcium salicylate detergent may be 0.05 to 2.0 wt. %, preferably 0.06 to 1.0 wt. %, in terms of the calcium content.
  • the neutral or basic salicylate detergent can be prepared in a manner apparent to one skilled in the art, for example, from salicylic acid having a hydrocarbyl group such as an alkyl group of 12 to 30 carbon atoms.
  • the salicylate detergents include alkaline earth metal (e.g., calcium, magnesium) salts of salicylic acid derivatives having hydrocarbyl groups.
  • various mixtures e.g., a mixture of salicylate and phenate
  • the content of the salicylate detergent in the lubricating oil composition is less than 1.0 wt. %, the composition can not have enough thermal oxidation durability and detergency to prevent its hydrolysis, and the TBN value is liable to decrease.
  • the detergent is incorporated in an amount of more than 20.0 wt. %, the improved thermal oxidation durability and detergency corresponding to the increased amount are not expected.
  • the use of the salicylate detergent in such a large amount is not economical.
  • an ashless dispersant is further incorporated in an amount of 0.1 to 10.0 wt. %, preferably 0.5 to 10.0 wt. %, and most preferably 1.0 to 5.0 wt %, based on the total amount of the lubricating oil composition of the present invention.
  • a hydrocarbon oil which has been used in preparing the ashless dispersant is contained in a small amount, and hence the above-mentioned amount for the dispersant includes not only the active component but also the remaining hydrocarbon oil.
  • the amount of the succinimide may be 0.001 to 0.15 wt. %, preferably 0.008 to 0.15 wt. %, in terms of the nitrogen content.
  • ashless dispersants examples include mono-imides or bis-imides modified with organic acids.
  • the succinimide dispersant can be prepared by the steps of, for example, conducting a reaction at 100 to 200°C between maleic anhydride and a polybutene or chlorinated polybutene having a molecular weight of 800 to 8,000 to give a polybutenylsuccinic anhydride, and reacting the obtained anhydride with a polyamine.
  • the polyamines include diethylenetriamine, triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine, and hexaethyleneheptamine.
  • the succinimide dispersant is preferably borated, and the preferable borated dispersant can be prepared, for example, by a reaction between the above-mentioned product (i.e., polybutenylsuccinimide) and boric acid (or a boric acid derivative).
  • the above-mentioned product i.e., polybutenylsuccinimide
  • boric acid or a boric acid derivative
  • the content of the ashless dispersant in the lubricating oil composition is less than 0.1 wt. %, the oil composition exhibits poor stability against water-contamination and the sludge is not dispersed well. On the other hand, if the dispersant is incorporated in an amount of more than 10.0 wt. %, the oil composition sometimes exhibits poor thermal stability.
  • a zinc dialkyldithiophosphate (ZnDTP) is incorporated in an amount of 0.1 to 2.0 wt. %, preferably 0.1 to 1.5 wt. %, and most preferably 0.3 to 1.0 wt %, based on the total amount of the lubricating oil composition of the present invention.
  • ZnDTP a hydrocarbon oil, which has been used in preparing the ZnDTP, is contained in a small amount, and hence the above-mentioned amount for the ZnDTP includes not only the active component but also the remaining hydrocarbon oil.
  • the amount of ZnDTP may be 0.001 to 0.15 wt. %, preferably 0.001 to 0.11 wt. %, in terms of the phosphorus content.
  • the alkyl group of zinc dialkyldithiophosphate may be, for example, a straight or branched primary, secondary or tertiary alkyl group of 2 to 18 carbon atoms.
  • alkyl groups include ethyl, propyl, isopropyl, butyl, pentyl, hexyl, heptyl, octyl, decyl, dodecyl, and octadecyl.
  • the content of ZnDTP in the lubricating oil composition is less than 0.1 wt. %, the oil composition can not have enough oxidization durability and detergency. On the other hand, even if ZnDTP is incorporated in an amount of more than 2.0 wt. %, the improved thermal oxidation durability and detergency corresponding to the increased amount is not expected.
  • a nonmetallic oxidation inhibitor is furthermore incorporated in an amount of 0.05 to 2.0 wt. %, preferably 0.1 to 1.0 wt. %, and most preferably 0.3 to 1.0 wt. %, based on the total amount of the composition. If the amount is less than 0.05 wt. %, the oxidation inhibitor cannot satisfactorily prevent the oxidation. Even if the oil composition contains the oxidation inhibitor in an amount of more than 2.0 wt. %, the improved thermal oxidation durability and detergency is not expected.
  • the nonmetallic oxidation inhibitor is a phenolic oxidation inhibitor.
  • the phenolic oxidation inhibitors include hindered phenols such as 2,6-di-t-butyl-p-cresol, 4,4'methylenebis-(2,6-di-t-butylphenol), 4,4'-thio-bis(2-methyl-6-t-butylphenol), 2'-thiodiethylenebis[3(3,5-di-t-butyl-4-hydroxyphenyl) propionate], and iso-octyl 3(3,5-di-t-butyl-4-hydroxyphenyl)propionate. These inhibitors may be used singly or in combination.
  • the phenolic oxidation inhibitor may also be used in combination with other nonmetallic oxidation inhibitors.
  • oxidation inhibitors of amine type, dithiocarbamate type, or sulfuric compound type are also employable.
  • the lubricating oil composition of the present invention is useful for imparting improved thermal oxidation durability and detergency of an internal combustion engine, particularly trunk piston engines such as land generators and ships.
  • a lubricating oil composition comprises a base oil of lubricating viscosity and an effective amount of the above compounds.
  • the lubricating oil composition would contain:
  • the lubricating oil composition would contain:
  • the lubricating oil composition of the invention can be prepared by successively or simultaneously adding the additive components to a base oil, or by beforehand preparing the additive composition as a concentrate and then mixing it with a base oil.
  • a lubricating oil composition is produced by blending a mixture of the above components.
  • the lubricating oil composition produced by that method might have a slightly different composition than the initial mixture, because the components may interact.
  • the components can be blended in any order and can be blended as combinations of components.
  • additives which may be present in the present lubricating oil composition include, but are not limited to, rust inhibitors, foam inhibitors, corrosion inhibitors, metal-deactivators, pour point depressants, anti-oxidants, and a variety of well-known additives.
  • Additive concentrates are also included within the scope of the present invention.
  • the concentrate of the present invention usually include the product produced by blending:
  • the concentrate of the present invention may comprise the product produced by blending:
  • the concentrates contain sufficient organic liquid diluent to make them easy to handle during shipping and storage.
  • Suitable organic diluents which can be used include for example, solvent refined 100N, i.e., Cit-Con 100N, and hydrotreated 100N, i.e., Chevron 100N, and the like.
  • the organic diluent preferably has a viscosity of about from 1.0 to 20 cSt at 100°C.
  • the components of the additive concentrate can be blended in any order and can be blended as combinations of components.
  • the concentrate produced by blending the above components might be a slightly different composition than the initial mixture because the components may interact.
  • a lubricating oil composition for a diesel internal combustion engine [SAE viscosity grade: 40, TBN:30 (measured by D2896)] was prepared using the following components. The components employed are set forth in Table 1 (in terms of wt. %).
  • Table 1 Each value shown in Table 1 indicates the degree of cleanliness.
  • the value of a clean test tube is set at 10. Therefore, the higher the number the better the results.
  • each lubricating oil composition of the present invention exhibits relatively small increases of both viscosity and TAN, and satisfactory TBN retention in the ISOT Test.
  • the Hot Tube Test shows that the lubricating oil compositions of the present invention show low deposits because thermal oxidation degradation of the lubricating oil is low.
  • the lubricating oil compositions of the comparative examples shown in Table 2 are inferior to those of the present invention in the ISOT Test (increases of viscosity, TAN, and TBN retention) and/or the Hot Tube Test (deposits due to oxidation of lubricating oil).
  • the lubricating oil composition of the present invention is required.
  • Examples 1-8 demonstrate that a specific nonmetallic oxidation inhibitor, particularly a phenolic oxidation inhibitor, more specifically iso-octyl 3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate, contributes to the unexpected improvement in the properties measured by the ISOT Test and Hot Tube Test.
  • the use of other nonmetallic oxidation inhibitors (Examples 7 and 8) provided an improvement in Hot Tube Test, but the results of the ISOT Test were inferior.
  • the lubricating oil composition of the present invention has enough stability against thermal oxidation and enough detergency at an elevated temperature to comply with the severe operating conditions required for modern diesel engines, particularly trunk piston engines such as land generators and ships. Therefore, if the lubricating oil composition of the present invention is employed for the engines operating continuously for long periods of time under severe conditions, it can reduce troublesome problems such as viscosity increase and consumption of the lubricating oil; production of black sludge derived from impurities and combustion residues of the fuel and the lubricating oil; accumulation of sludge on piston land, groove and piston undercrown; and friction wear of piston ring and cylinder liner.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)
EP99310591A 1998-12-28 1999-12-24 Schmierölzusammensetzungen für Brennkraftmaschinen mit verbesserter thermischer Oxidationsstabilität und mit verbesserter Reinigungswirkung Withdrawn EP1016706A3 (de)

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US6323162B1 (en) 1999-05-10 2001-11-27 Tonengeneral Sekiyu K.K. Lubricant oil composition for internal combustion engines (LAW960)
EP1314773A1 (de) * 2001-11-14 2003-05-28 Chevrontexaco Japan Ltd. Schmierölzusammensetzung für Schiffdieselmotoren mit verbesserten Hochtemperatureigenschaften
EP1167497A3 (de) * 2000-06-02 2003-06-25 Chevron Oronite Japan Limited Schmierölzusammensetzung für Dieselmotoren
EP1329496A1 (de) * 2002-01-14 2003-07-23 Infineum International Limited Borenthaltende Schmierölzusammensetzung mit niedrigem Schwefel- und Phosphorgehalt
EP1252275A4 (de) * 1999-12-15 2004-03-10 Exxonmobil Res & Eng Co Schmieröl mit langer lebensdauer unter verwendung von reinigungsmischungen
EP1522572A1 (de) * 2003-10-09 2005-04-13 Infineum International Limited Schmiermittelzusammensetzung
EP1528099A1 (de) * 2003-10-30 2005-05-04 Infineum International Limited Methode zur Verringerung der Bildung von Ablagerungen in einem Zentrifugensystem
EP1548089A1 (de) * 2003-12-22 2005-06-29 Chevron Oronite Company LLC Schmiermittelzusammensetzung enthaltend ein Alkalimetallsalicylat
US7026273B2 (en) 2001-11-09 2006-04-11 Infineum International Limited Lubricating oil compositions
EP1676902A1 (de) * 2004-12-28 2006-07-05 ChevronTexaco Japan Ltd Schmiermittelzusammensetzung mit verbesserter Oxidationsstabilität bei hohen Temperaturen
US7407919B2 (en) 2001-11-05 2008-08-05 The Lubrizol Corporation Sulfonate detergent system for improved fuel economy
US7612025B2 (en) 2004-02-04 2009-11-03 Nippon Oil Corporation Lubricating oil composition
US8361940B2 (en) 2006-09-26 2013-01-29 Chevron Japan Ltd. Low sulfated ash, low sulfur, low phosphorus, low zinc lubricating oil composition
US9175236B2 (en) * 2008-05-08 2015-11-03 Chevron Oronite Technology B.V. Lubricating oil composition and method for use with low sulfur marine residual fuel
US9175237B2 (en) 2007-12-12 2015-11-03 Chevron Oronite Technology B.V. Trunk piston engine lubricating oil compositions
EP3034587A1 (de) * 2014-12-19 2016-06-22 Infineum International Limited Schmierung für einen schiffsmotor
CN109628198A (zh) * 2018-12-17 2019-04-16 南开大学 一种节能型油脂基润滑油添加剂及其制备方法
US10364403B2 (en) 2013-11-06 2019-07-30 Chevron Oronite Technology B.V. Marine diesel cylinder lubricant oil compositions
US10669506B2 (en) 2013-11-06 2020-06-02 Chevron Oronite Technology B.V. Marine diesel cylinder lubricant oil compositions
US20220169946A1 (en) * 2019-03-29 2022-06-02 Idemitsu Kosan Co.,Ltd. Lubricating oil composition

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US6841521B2 (en) * 2003-03-07 2005-01-11 Chevron Oronite Company Llc Methods and compositions for reducing wear in heavy-duty diesel engines
US20040220059A1 (en) * 2003-05-01 2004-11-04 Esche Carl K. Low sulfur, low ash, low and phosphorus lubricant additive package using overbased calcium oleate
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JP4787016B2 (ja) * 2005-12-28 2011-10-05 シェブロンジャパン株式会社 ディーゼル内燃機関用潤滑油組成物
JP5020622B2 (ja) * 2005-12-28 2012-09-05 シェブロンジャパン株式会社 ディーゼル内燃機関用潤滑油組成物
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US6323162B1 (en) 1999-05-10 2001-11-27 Tonengeneral Sekiyu K.K. Lubricant oil composition for internal combustion engines (LAW960)
EP1252275A4 (de) * 1999-12-15 2004-03-10 Exxonmobil Res & Eng Co Schmieröl mit langer lebensdauer unter verwendung von reinigungsmischungen
EP1167497A3 (de) * 2000-06-02 2003-06-25 Chevron Oronite Japan Limited Schmierölzusammensetzung für Dieselmotoren
US7407919B2 (en) 2001-11-05 2008-08-05 The Lubrizol Corporation Sulfonate detergent system for improved fuel economy
US7026273B2 (en) 2001-11-09 2006-04-11 Infineum International Limited Lubricating oil compositions
EP1314773A1 (de) * 2001-11-14 2003-05-28 Chevrontexaco Japan Ltd. Schmierölzusammensetzung für Schiffdieselmotoren mit verbesserten Hochtemperatureigenschaften
EP1329496A1 (de) * 2002-01-14 2003-07-23 Infineum International Limited Borenthaltende Schmierölzusammensetzung mit niedrigem Schwefel- und Phosphorgehalt
EP1522572A1 (de) * 2003-10-09 2005-04-13 Infineum International Limited Schmiermittelzusammensetzung
EP1528099A1 (de) * 2003-10-30 2005-05-04 Infineum International Limited Methode zur Verringerung der Bildung von Ablagerungen in einem Zentrifugensystem
EP1548089A1 (de) * 2003-12-22 2005-06-29 Chevron Oronite Company LLC Schmiermittelzusammensetzung enthaltend ein Alkalimetallsalicylat
US8188020B2 (en) 2003-12-22 2012-05-29 Chevron Oronite S.A. Lubricating oil composition containing an alkali metal detergent
US7612025B2 (en) 2004-02-04 2009-11-03 Nippon Oil Corporation Lubricating oil composition
EP1676902A1 (de) * 2004-12-28 2006-07-05 ChevronTexaco Japan Ltd Schmiermittelzusammensetzung mit verbesserter Oxidationsstabilität bei hohen Temperaturen
US8361940B2 (en) 2006-09-26 2013-01-29 Chevron Japan Ltd. Low sulfated ash, low sulfur, low phosphorus, low zinc lubricating oil composition
US9175237B2 (en) 2007-12-12 2015-11-03 Chevron Oronite Technology B.V. Trunk piston engine lubricating oil compositions
US9175236B2 (en) * 2008-05-08 2015-11-03 Chevron Oronite Technology B.V. Lubricating oil composition and method for use with low sulfur marine residual fuel
US10364403B2 (en) 2013-11-06 2019-07-30 Chevron Oronite Technology B.V. Marine diesel cylinder lubricant oil compositions
US10669506B2 (en) 2013-11-06 2020-06-02 Chevron Oronite Technology B.V. Marine diesel cylinder lubricant oil compositions
EP3034587A1 (de) * 2014-12-19 2016-06-22 Infineum International Limited Schmierung für einen schiffsmotor
CN109628198A (zh) * 2018-12-17 2019-04-16 南开大学 一种节能型油脂基润滑油添加剂及其制备方法
US20220169946A1 (en) * 2019-03-29 2022-06-02 Idemitsu Kosan Co.,Ltd. Lubricating oil composition

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