30 results about "Total Base Number" patented technology

The present invention provides a method for lubricating a combustion engine that is suitable for improving at least one of the following: deposits, sludge, oxidation, and wear. [Solution] A method for lubricating a combustion engine comprises lubricating the combustion engine with a lubricating oil composition, wherein the lubricating oil composition comprises a base oil having a lubricating viscosity having more than about 90 weight percent saturated material, less than about 0.03 weight percent sulfur, and more than about 50 weight percent hydrogenated mineral oil having a viscosity index of less than or equal to about 120; a detergent system having less than about 5 weight percent metal from a non-sulfonate detergent and (ii) a total base number (TBN) of a specific value, giving about 60 to about 85 percent of the total lubricating oil composition TBN; an anti-wear system comprising one or more zinc dihydrocarbyl dithiophosphate compounds; and an antioxidant system comprising one or more phenolic antioxidant compounds, one or more amine antioxidant compounds, or a combination thereof.

This invention relates to a lubricating oil composition comprising or resulting from the admixing of: a) 50 to 99 mass % of one or more base oils; b) 0.1 to 15 mass % of one or more functionalized olefin copolymer having an Mn of from 10,000 to 35,000 g / mol; c) 0.1 to 20 mass % of one or more detergents wherein the detergent comprises at least one calcium detergent having a TBN of more than 100 mg KOH / g; at least one calcium detergent having a TBN of 100 mg KOH / g or less; and at least one magnesium detergent, where the difference in the TBN's for the Ca detergents is at least 100 mg KOH / g; d) 0.01 to 40 mass % of one or more dispersants wherein the dispersants comprise at least one borated dispersant and at least one non borated dispersant; e) 0.01 to 20 of mass % sulfurized fatty acid ester; f) 0.01 to 5 mass % of one or more amine or phenol based antioxidants; and g) 0.001 to 15 mass % of molybdenum containing compound, where the lubricating oil composition has: 1) a sulfated ash content of 0.9 mass % or less; 2) a Mack T-11 final soot %@15 cSt of 6.7% or more; 3) a total base number of 5 to 30 mg KOH / g; 4) HTCBT of copper level increase of 20 ppm or less; 5) T-13 IR peak EOT of 40 abs / cm or less; and 6) Cam wear outlet of 45 μm or less.

This invention relates to a method for reducing abnormal combustion events during engine operation of a hydrogen-fired internal combustion engine (HICE), the method comprising the steps of: a) providing the hydrogen-fired internal combustion engine with a lubricating oil composition comprising or a mixture of the following components: i) a base oil having a KV100 of less than or equal to 12 cSt and comprising more than 50% by weight of the composition, and comprising Group I, Group II, Group III, Group IV base oils or combinations thereof; ii) at least one aromatic amine antioxidant comprising 0.1% to 10.0% by weight of the composition; iii) at least one over-alkaline metal-containing detergent having a total base number (KOH / g) of greater than or equal to 9 and less than or equal to 500, and comprising a treatment level providing the composition with 100 to 5000 ppm of total metals and 0.15% to 8.0% by weight of total soap; and iv) The lubricating oil composition has a total sulfate ash content of less than or equal to 2.5% by weight, a total phosphorus level of less than or equal to 0.120% by weight, and an SAE viscosity grade of 25W-X, 20W-X, 15W-X, 10W-X, 5W-X, or 0W-X, where X represents any one of 8, 12, 16, 20, 30, 40, 50, or 60; b) supplying hydrogen-containing fuel to the HICE; and c) burning the fuel in the HICE. The present invention also provides lubricating oil compositions and concentrates for use in HICE to reduce the tendency for malfunctions.

A lubricating oil composition configured for lubricating an internal combustion engine fueled with an alternative fuel having an auto-ignition temperature greater than about 700K. The lubricating oil composition includes at least a detergent system including at least one overbased metal-containing sulfonate detergent, optionally at least one neutral to low-based metal containing sulfonate detergent, and where the metal provided from the overbased sulfonate detergent is balanced relative to the total detergent metal and / or the composition total base number.

A lubricating oil composition configured for lubricating an internal combustion engine fueled with an alternative fuel having an autoignition temperature above about 700K. The lubricating oil composition comprises at least a detergent system comprising at least one overbased metal sulfonate-containing detergent, at least one neutral to low-based metal sulfonate-containing detergent, and at least one overbased metal phenate-containing detergent, wherein the metals provided by the overbased sulfonate detergent are appropriately balanced relative to the total detergent metals and / or the total base number of the composition.

The present invention provides a lubricant composition having a desirable viscosity profile, including good low-temperature viscosity characteristics. Furthermore, it provides a lubricant composition that exhibits good dispersion characteristics without requiring the high dispersant treatment rate typically associated with high-performance engine oils. [Solution] A lubricating oil composition comprising a base oil with a lubricating viscosity of more than 50% by weight and an additive composition, wherein the additive composition comprises one or more zinc dialkyldithiophosphate (ZDDP compounds) and one or more dispersants, and the amount of zinc (Zn) by weight percentage provided to the lubricating oil composition by the one or more ZDDPs, multiplied by the amount of contribution of the TBN of the one or more dispersants to the total base number (TBN) of the lubricating oil composition, is at least about 0.06 multiplication exponent Zn * A lubricating oil composition, which is TBNDisp, is provided.

A lubricating oil for a hybrid engine comprising a major amount of an oil of lubricating viscosity; a boron-containing compound in an amount to provide 50 ppm to 300 ppm of boron to the lubricating oil composition; an overbased calcium salicylate or a mixture of an overbased calcium salicylate and an overbased calcium sulfonate, individually having a total base number greater than 150 mg KOH / g as measured by the method of ASTM D-2896, in an amount to provide 800 ppm to 1800 ppm of calcium to the lubricating oil composition; zinc dithiophosphate (ZnDTP) in an amount to bring 100 ppm to 800 ppm of phosphorus to the lubricating oil composition; and a non-dispersant pectinate polymethacrylate (PMA) viscosity index improver (VII). The boron-containing compound includes a borated dispersant. The KV of the lubricating oil composition at 100°C is 6 cSt to 8.5 cSt, the KV of the lubricating oil composition at 40°C is 25 cSt to 35 cSt, and the VI of the lubricating oil composition is greater than 200.

A lubricating oil composition for hybrid engines including greater than 50 wt.% of the composition base oil; one or more polyisobutylene succinimide dispersant(s) (Mn 1600 g / mol or more), wherein the treat level of the higher molecular weight PIBSA-PAM is from 1.0 to 9.0 wt.% of the composition; and an overbased calcium and / or magnesium, salicylate or sulfonate detergent, or a combination thereof, wherein the detergent has a Total Base Number (KOH / g) at least 9 and no more than 500, and delivers at least 5 mmol of total soap to the composition. Also provided are methods of evaluating lubricating oil compositions for ranking performance in hybrid engines by running a bench scale test protocol based upon 3 test results: the emulsion dispersion and stability performance at all 4 test conditions in the Emulsion Stability test (modified ASTM D7563), the emulsion corrosion test, and the journal bearing wear test.

The present application relates to the technical field of lubricating technology and electrical insulation medium technology, and provides a lubricating composition for an electrically driven coupling transmission system and a preparation method and application thereof.The lubricating composition takes poly-alpha-olefin as a main body, is matched with synthetic ester, alkylated naphthalene, ash-free total base number carrier, a sulfur-free and phosphorus-free organic tungsten compound with a tungsten element content of 100-300 ppm and a mole ratio of amine nitrogen to tungsten of 0.5-3.0, functionalized hexagonal boron nitride nanosheet, a sulfur-free and phosphorus-free organic molybdenum compound and demulsification aid.The lubricating composition has low power factor, high breakdown voltage and high volume resistivity under the conditions of low ash, low sulfur, low phosphorus and prohibition of ZDDP and 1,3,4-thiadiazole, and the 10 mu m filtration one-pass rate is not less than 98% under the condition of a water content of 300+ / -30 mg / kg, and is suitable for an integrated electric drive system of a motor, a gear and a bearing.

The present application relates to diesel engine oil additive technical field, specifically relates to a kind of low ash high base value's environmental protection diesel engine oil additive composition and its application.The present application provides a kind of diesel engine oil additive composition, including mass ratio (2~8) :1:1 of dialkyldiphenylamine, phenolic ester compound and sulfenyl compound;The structural formula of dialkyldiphenylamine is wherein, R1 And R2 Same or different C1~C8 Alkyl;The molecular weight of the phenolic ester compound is 200~400.The present application is by optimizing antioxidant composition, not only significantly improve the antioxidation performance, more important is that can in the case where ash of oil product is not increased, significantly improve oil product initial total base number, significantly enhance the service life of oil product.

The application belongs to the technical field of engines, and particularly relates to an oil-electric hybrid engine lubricating system protective agent and a preparation method. In view of the problems of a large friction coefficient, poor oxidation resistance, and a too fast reduction speed of the total alkalinity of an engine lubricating system, the following scheme is provided. The weight parts of raw materials of the oil-electric hybrid engine lubricating system protective agent include 45-55 parts of V-type base oil, 15-20 parts of organic molybdenum nonmetallic anti-wear agent, 8-12 parts of an antioxidant, 7-12 parts of a viscosity improver, and 10-15 parts of a composite additive. The raw materials of the organic molybdenum nonmetallic anti-wear agent include nanoscale organic molybdenum, monobutyldiformimide ashless, and petroleum sulfonate. The movement mode of surface friction is changed into rolling friction, the friction coefficient is effectively reduced, the extreme pressure performance is improved, excellent anti-wear and anti-friction and oxidation resistance are achieved, and the reduction speed of the total alkalinity of the engine lubricating system is slowed down.

A marine diesel engine lubricating oil composition includes (a) a major amount of an oil of lubricating viscosity; and (b) one or more olefin copolymers having a number average molecular weight of 30,000 to 120,000. The marine diesel lubricating oil composition has a TBN of less than 70 mg KOH / g. The marine diesel lubricating oil composition is a monograde lubricating oil composition meeting the specifications for SAE J300 revised January 2015 requirements for a SAE 40, SAE 50 or SAE 60 monograde lubricating oil.

A lubricating oil for hybrid engine includes a major amount of an oil of lubricating viscosity; a boron-containing compound in an amount to provide 50 to 300 ppm of boron to lubricating oil composition; an overbased calcium salicylate or a mixture of an overbased calcium sulfonate and overbased calcium salicylate individually having a total base number of greater than 150 mg KOH / g, measured by the method of ASTM D-2896, present in an amount that provides 800 ppm to 1800 ppm of calcium to the lubricating oil composition; zinc dithiophosphate (ZnDTP) in an amount to bring from 100 to 800 ppm of phosphorus to the lubricating oil composition; and a non-dispersant comb polymethacrylate (PMA) viscosity index improver (VII). The boron-containing compound includes a borated dispersant. The KV at 100° C. of the lubricating oil composition is from 6 cSt to 8.5 cSt, the KV at 40° C. of the lubricating oil composition is from 25 cSt to 35 cSt, and the VI of the lubricating oil composition is greater than 200.

This invention relates to a method for reducing abnormal combustion events during engine operation of a hydrogen-fired internal combustion engine (HICE), the method comprising the steps of: a) providing the hydrogen-fired internal combustion engine with a lubricating oil composition comprising or a mixture of the following components: i) a base oil having a KV100 of less than or equal to 12 cSt and comprising more than 50% by weight of the composition, and comprising Group I, Group II, Group III, Group IV base oils or combinations thereof; ii) at least one over-alkaline metal-containing detergent having a total base number (KOH / g) of greater than or equal to 9 and less than or equal to 500, and comprising a treatment level providing the composition with 100 to 5000 ppm of total metals and 0.15% to 8.0% by weight of total soap; iii) at least one molybdenum-containing compound comprising a treatment level providing the composition with 20 to 2000 ppm of total molybdenum by weight; and iv) The lubricating oil composition has a total sulfate ash content of less than or equal to 2.0% by weight, a total phosphorus level of less than or equal to 0.120% by weight, and an SAE viscosity grade of 25W-X, 20W-X, 15W-X, 10W-X, 5W-X, or 0W-X, where X represents any one of 8, 12, 16, 20, 30, 40, 50, or 60; b) supplying hydrogen-containing fuel to the HICE; and c) burning the fuel in the HICE. The present invention also provides lubricating oil compositions and concentrates for use in HICE to reduce the tendency for malfunctions.

A lubricating oil composition configured for lubricating an internal combustion engine fueled with an alternative fuel having an autoignition temperature above about 700K. The lubricating oil composition comprises at least a detergent system comprising at least one overbased metal sulfonate-containing detergent, optionally at least one neutral to low based metal sulfonate-containing detergent, and wherein the metals provided by the overbased sulfonate detergent are balanced relative to the total detergent metals and / or the total base number of the composition.

This invention relates to a method of reducing abnormal combustion events in a hydrogen fueled internal combustion engine (HICE) during operation of the engine. The method includes the steps of: a) providing to the HICE a lubricating oil composition including or resulting from the admixing of: i) a base oil having a KV100 of less than or equal to 12 cSt and included at greater than 50 wt. % of the composition and comprising a Group I base oil, a Group II base oil, a Group III base oil, a Group IV base oil, or combinations thereof; ii) at least one overbased metal containing detergent with a Total Base Number (KOH / g) greater than or equal to 9 and less than or equal to 500 and included at a treat level to deliver between 100 to 5000 ppm by weight of total metal and between 0.15 wt. % to 8.0 wt. % of total soap to the composition; iii) at least one silicon containing compound included at a treat level to deliver between 50 to 900 ppm by weight of total silicon to the composition; and iv) the lubricating oil composition having a total sulfated ash of less than or equal to 2.0 wt. %, a total phosphorous level of less than or equal to 0.120 wt. %, and a SAE viscosity grade of 25W-X, 20W-X, 15W-X, 10W-X, 5W-X or 0W-X, where X represents any one of 8, 12, 16, 20, 30, 40, 50 or 60; b) providing a fuel comprising hydrogen to the HICE; and c) combusting the fuel in the HICE. Also provided are a lubricating oil composition and a concentrate for use in a HICE to reduce the propensity for abnormal combustion events.

This invention relates to a lubricating oil composition for ammonia fueled internal combustion engines (AICE) including: a) an oil of lubricating viscosity at greater than 50 wt. % of the composition comprising a Group I base oil, a Group II base oil, a Group III base oil, a Group IV base oil, or combinations thereof; b) optionally, one or more, optionally borated, higher molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn 1600 g / mol or more); c) one or more, optionally borated, lower molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn less than 1600 g / mol), wherein the treat level of the combination of the higher molecular weight PIBSA-PAM and lower molecular weight PIBSA-PAM is from 2.5 to 12.0 wt. % of the composition, wherein the treat level of the lower molecular weight PIBSA-PAM is from 0.1 to 9.0 wt. % of the composition, and wherein the treat level of the higher molecular weight PIBSA-PAM is less than or equal to 3.0 wt. %; and d) one or more overbased detergents selected from the group consisting of a metal salicylate, a metal carboxylate, a mixture of a metal salicylate and a metal sulfonate, a mixture of a metal carboxylate and a metal sulfonate, and combinations thereof, wherein the one or more overbased detergents have a Total Base Number (mgKOH / g) greater than or equal to 9 and less than or equal to 500 and deliver at least 5 mmol of total soap to the composition; and e) one or more zinc dialkyl dithiophosphate (ZDDP) compounds at from about 0.08 wt. % to about 2.0 wt. % of the lubricating oil composition. The lubricating oil composition has a total sulfated ash of less than or equal to 5.0 wt. %, and a total phosphorous level of less than or equal to 0.120 wt. %, and a viscosity of less than or equal to 25 cSt (KV100). The lubricating oil composition upon exposure to ammonia contamination per the NOx-Ammonia exposure protocol results in a decrease in MCT performance rating of less than or equal to 4.0 merits. Also provided is a concentrate for use in a lubricating oil for an AICE and a method of improving engine cleanliness in an AICE.

This invention relates to a method for reducing abnormal combustion events during engine operation of a hydrogen-fired internal combustion engine (HICE). The method includes the steps of: a) providing the HICE with a lubricating oil composition comprising or a mixture of the following components: i) a base oil having a KV100 of less than or equal to 12 cSt and an amount greater than 50% by weight of the composition, and containing Group I, Group II, Group III, Group IV base oils, or combinations thereof; ii) a super-alkaline metal-containing detergent comprising a super-alkaline metal salicylate detergent, a super-alkaline metal phenolate detergent, or a combination thereof, having a total base number (KOH / g) greater than or equal to 9 and less than or equal to 500, and being contained at a treatment level providing the composition with a total metal content between 100 and 5000 ppm by weight and a total soap content between 0.15% by weight and 8.0% by weight; and iii) The lubricating oil composition has a total sulfate ash content of less than or equal to 2.0% by weight, a total phosphorus level of less than or equal to 0.120% by weight, and an SAE viscosity grade of 25W-X, 20W-X, 15W-X, 10W-X, 5W-X, or 0W-X, where X represents any one of 8, 12, 16, 20, 30, 40, 50, or 60; b) supplying hydrogen-containing fuel to the HICE; and c) burning the fuel in the HICE. Lubricating oil compositions and concentrates for reducing the tendency for abnormal combustion events in HICE are also provided.

To provide a passenger car lubrication composition that reduces or eliminates the level of metal-containing anti-wear additives while meeting the high requirements of industrial performance standards. [Solution] A passenger car lubrication composition having a low sulfated ash content, comprising a base oil, an anti-wear system containing an ashless phosphorus-containing anti-wear compound and optionally a metal-containing anti-wear compound, an anti-wear system in which the phosphorus weight ratio of the ashless anti-wear compound to the optionally metal-containing anti-wear compound is about 50:50 to 100:0, a detergent system having a sulfated ash content of about 0.75 weight percent or less according to ASTM D874, a total phosphorus of the ashless phosphorus-containing anti-wear compound and optionally a metal-containing anti-wear compound of about 700 ppm or less, and a magnesium to calcium weight ratio of about 2.0 or less, and a TBN ratio of about 60 percent TBN according to ASTM D2896 to TBN according to ASTM D4739.

This invention relates to a lubricating oil composition for hybrid engines includinga) an oil of lubricating viscosity at greater than 50 wt. % of the composition comprising a Group I, II, III or IV base oil, or combinations thereof; b) one or more, optionally borated, higher molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn 1600 g / mol or more); c) optionally one or more, optionally borated, lower molecular weight polyisobutylene succinimide (PIBSA-PAM) dispersant (Mn less than 1600 g / mol), wherein the treat level of the combination of the higher molecular weight PIBSA-PAM and lower molecular weight PIBSA-PAM is from 1.0 to 12.0 wt. % of the composition, and wherein the treat level of the higher molecular weight PIBSA-PAM is from 1.0 to 9.0 wt. % of the composition; and d) an overbased calcium salicylate or sulfonate detergent, an overbased magnesium salicylate or sulfonate detergent, an overbased mixed calcium and magnesium salicylate or sulfonate detergent or a combination thereof, wherein the detergent has a Total Base Number (KOH / g) greater than or equal to 9 and less than or equal to 500 and delivers at least 5 mmol of total soap to the composition. Also provided is a method of evaluating a lubricating oil composition for ranking its performance in a hybrid engine by running a bench scale test protocol based upon 3 test results: the emulsion dispersion and stability performance at all 4 test conditions in the Emulsion Stability test (modified ASTM D7563), the emulsion corrosion test, and the journal bearing wear test.

The disclosed technology relates to a lubricating composition comprising: an oil of lubricating viscosity, and a ashless basic amine additive selected from a secondary amine containing an alpha-carbon aromatic substitution. The basic secondary amine additive used in the disclosed technology lubricating oil imparts basicity as measured by total base number (TBN) without the addition of sulfated ash. The lubricating oil containing the basic secondary amine additive of the disclosed technology simultaneously achieves seal compatibility, deposit and corrosion control.

The invention relates to a lubricating oil composite additive and a marine cylinder oil composition containing the lubricating oil composite additive. The lubricating oil composite additive is prepared from the following components in percentage by weight: 30 to 85 percent of sulfonate, 5 to 30 percent of sulfurized alkylphenate, 0.5 to 30 percent of ashless dispersant and 0.1 to 20 percent of antioxidant, wherein the 100 DEG C kinematic viscosity of the ashless dispersant is greater than or equal to 400mm < 2 > / s; the sulfonate is a combination of sulfonate with at least one base number; the total base number of the sulfurized alkyl phenate is greater than or equal to 150 mgKOH / g. By optimizing the proportion of the sulfonate, the sulfurized alkylphenate and the high-molecular-weight ashless dispersant and adding the antioxidant, the low-base-number lubricating oil composite additive of low-sulfur fuel oil, which has good comprehensive properties such as high detergency, high dispersity and high oxidation resistance, is obtained and has the advantages of high viscosity, high viscosity, high viscosity, high viscosity, high viscosity, low cost and the like. The bright stock can provide good detergency, dispersibility and oxidation stability, can efficiently control sediments, and can realize low addition amount of bright stock.

This invention relates to a method for reducing abnormal combustion events during engine operation of a hydrogen-fired internal combustion engine (HICE). The method includes the steps of: a) providing the HICE with a lubricating oil composition comprising or a mixture of the following components: i) a base oil having a viscosity KV100 of less than or equal to 12 cSt and comprising more than 50% by weight of the composition, and containing Group I, Group II, Group III, Group IV base oils, or combinations thereof; ii) a super-alkaline magnesium detergent comprising super-alkaline magnesium salicylate, super-alkaline magnesium sulfonate, super-alkaline magnesium phenolate, or combinations thereof, having a total base number (KOH / g) greater than or equal to 9 and less than or equal to 500, and containing at a treatment level providing total magnesium between 100 and 5000 ppm by weight; iii) The super-alkaline metal-containing detergent comprises a super-alkaline metal salicylate detergent, a super-alkaline metal phenolate detergent, or a combination thereof, having a total base number (KOH / g) greater than or equal to 9 and less than or equal to 500 and containing at a treatment level providing a total metal content between 100 and 5000 ppm by weight; and wherein the super-alkaline magnesium-containing detergent of ii) and the super-alkaline metal-containing detergent of iii) together provide the composition with a total soap content between 0.15% by weight and 8.0% by weight; iv) at least one dialkyl dithiophosphate zinc compound containing at a treatment level providing the composition with a zinc content greater than 100 ppm by weight and a phosphorus content less than 800 ppm by weight; v) at least one molybdenum-containing compound containing at a treatment level providing the composition with a total molybdenum content between 20 and 2000 ppm by weight; vi) at least one silicon-containing compound containing at a treatment level providing the composition with a total silicon content between 5 and 1000 ppm by weight; and vii) The lubricating oil composition has a total sulfate ash content of less than or equal to 2.0% by weight, a total phosphorus level of less than or equal to 800 ppm by weight, and an SAE viscosity grade of 25W-X, 20W-X, 15W-X, 10W-X, 5W-X, or 0W-X, where X represents any one of 8, 12, 16, 20, 30, 40, 50, or 60; b) supplying hydrogen-containing fuel to the HICE; and c) burning the fuel in the HICE. Lubricating oil compositions and concentrates for reducing the tendency for abnormal combustion events in HICE are also provided.

Lubricating oil compositions, concentrates therefor and methods of improving engine cleanliness for ammonia fueled internal combustion engines including, by weight of the lubricating oil composition: greater than 50 wt.% oil of lubricating viscosity; 0.1 to 9.0 wt.% one or more, optionally borated, lower molecular weight polyisobutylene succinimide dispersants; one or more overbased metal salicylate and / or metal carboxylate detergents, either optionally in mixture with a metal sulfonate, having a Total Base Number from 9 to 500 mgKOH / g and delivering at least 5 mmol of total soap to the composition; and from about 0.08 wt.% to about 2.0 wt.% one or more zinc dialkyl dithiophosphate compounds. The lubricating oil composition has a total sulfated ash of less than or equal to 5.0 wt.%, a total phosphorous level of less than or equal to 0.120 wt.%, and an overall viscosity of less than or equal to 25 cSt (KV100).

To provide a lubricant composition and a method for lubricating an engine, which are effective in reducing high-temperature deposits, particularly those present in low-ash compositions.SOLUTION: A lubricant composition comprises at least one base oil of lubricating viscosity, a detergent system, and an antiwear system comprising a metal dialkyldithiophosphate that provides phosphorus to the lubricant composition. A total base number (TBN) of the lubricant composition is about 0.5 to about 20 and the amount of the phosphorus from the antiwear system relative to the TBN of the lubricant composition is 150 or less.SELECTED DRAWING: None

This invention relates to a method for reducing abnormal combustion events during engine operation of a hydrogen-fired internal combustion engine (HICE). The method includes the steps of: a) providing the HICE with a lubricating oil composition comprising or a mixture of the following components: i) a base oil having a KV100 of less than or equal to 12 cSt and an amount greater than 50% by weight of the composition, and containing Group I, Group II, Group III, Group IV base oils, or combinations thereof; ii) at least one boronized polyisobutylene succinimide (PIBSA-PAM) dispersant in an amount of 0.25% to 8.0% by weight of the composition to provide the composition with 30 to 1000 ppm by weight of total boron, wherein the boronized PIBSA-PAM dispersant is selected from lower molecular weight PIBSA-PAM dispersants (Mn less than 1600 g / mol), higher molecular weight PIBSA-PAM dispersants (Mn 1600 g / mol or greater), and combinations thereof; iii) At least one over-alkaline metal-containing detergent having a total base number (KOH / g) greater than or equal to 9 and less than or equal to 500 and being contained at a treatment level providing the composition with total metals between 100 and 5000 ppm by weight and total soaps between 0.15% by weight and 8.0% by weight; and iv) the lubricating oil composition having a total sulfate ash content less than or equal to 2.5% by weight, a total phosphorus level less than or equal to 0.120% by weight, and an SAE viscosity grade of 25W-X, 20W-X, 15W-X, 10W-X, 5W-X, or 0W-X, wherein X represents any one of 8, 12, 16, 20, 30, 40, 50, or 60; b) providing the HICE with hydrogen-containing fuel; and c) burning the fuel in the HICE. Lubricating oil compositions and concentrates for reducing the tendency for undesirable combustion events in HICE are also provided.

The present invention relates to a method of reducing abnormal combustion events in a hydrogen-fueled internal combustion engine (HICE) during engine operation. The method comprises the steps of: a) providing to the HICE a lubricating oil composition comprising or resulting from admixing: i) a base oil having a KV100 of less than or equal to 12 cSt and a content of greater than 50 wt% of the composition and comprising a Group I base oil, a Group II base oil, a Group III base oil, a Group IV base oil, or a combination thereof; ii) an overbased magnesium-containing detergent comprising an overbased magnesium salicylate, an overbased magnesium sulfonate, an overbased magnesium phenate, or a combination thereof having a total base number (KOH / g) of greater than or equal to 9 and less than or equal to 500 and included at a treat level to the composition providing between 100 and 5000 ppm by weight of total magnesium and between 0.15 wt% and 8.0 wt% of total soap; iii) at least one overbased calcium-containing detergent having a total base number (KOH / g) of greater than or equal to 9 and of less than or equal to 500 and included at a treat level to the composition providing greater than 100 ppm by weight of total calcium; and iv) the lubricating oil composition having less than or equal to 2.0 wt% of total sulfated ash, less than or equal to 0.120 wt% of total phosphorus level, and a SAE viscosity grade of 25W-X, 20W-X, 15W-X, 10W-X, 5W-X, or 0W-X, where X represents any one of 8, 12, 16, 20, 30, 40, 50, or 60; b) providing to the HICE a hydrogen-containing fuel; and c) combusting the fuel in the HICE. Also provided are lubricating oil compositions and concentrates for reducing the propensity for abnormal combustion events in a HICE.

A lubricating oil composition configured for lubricating an internal combustion engine fueled with an alternative fuel having an auto-ignition temperature greater than about 700K. The lubricating oil composition includes at least a detergent system including at least one overbased metal-containing sulfonate detergent, at least one neutral to low-based metal containing sulfonate detergent, and at least one overbased metal-containing phenate detergent where the metal provided from the overbased sulfonate detergent is correctly balanced relative to the total detergent metal and / or the composition total base number.

A lubricating oil composition configured for lubricating an internal combustion engine fueled with an alternative fuel having an auto-ignition temperature greater than about 700K. The lubricating oil composition includes at least a detergent system including at least one overbased metal-containing sulfonate detergent, at least one neutral to low-based metal containing sulfonate detergent, and at least one overbased metal-containing phenate detergent where the metal provided from the overbased sulfonate detergent is correctly balanced relative to the total detergent metal and / or the composition total base number.