166results about How to "Excellent detergency and dispersibility" patented technology

The present invention relates to a CD grade diesel engine oil additive and a use thereof. According to the present invention, the CD grade diesel engine oil additive comprises, by weight, a) 10-50 parts of a detergent, b) 10-40 parts of a dispersing agent, c) 5-30 parts of an antioxidant, d) 1-5 parts of a pour point depressant, and e) 0.1-2 parts of an anti-foaming agent, wherein the calcium content in the additive is 30000-70000 ppm, the nitrogen content in the additive is 3000-7000 ppm, and the base number is not less than 100 mgKOH / g; and with the additive, qualities of the modulated CD single grade oil and the modulated CD multi-grade oil achieve the CD diesel engine oil specification in GB11122-2006, and the additive can be used for industrial production of the CD grade diesel engine oil.

The invention discloses ultralow temperature ash-free antiwear incombustible ester type hydraulic oil, a production technology and application thereof. The ultralow temperature ash-free antiwear incombustible ester type hydraulic oil is prepared from a viscosity index improver, a pour point reducer, an emulsion breaker, a defoaming agent, an antiwear reagent at extreme pressure, an ash-free detergent dispersant, an antirust agent, an antioxidant, a fire retardant and base oil. The ultralow temperature ash-free antiwear incombustible ester type hydraulic oil has the advantages that firstly, theoil has the extremely stable molecular structure, and the good oxidation stability; secondly, the oil has the extremely good lubricating performance and antiwear performance, and can effectively prolong the life of an engine; thirdly, the oil has the low temperature fluidity so that the engine can be easily started; fourthly, the oil has the good high temperature high shearing performance, the volatile loss at a high temperature is less, and the oil film tenacity and strength of an oil product at the high temperature are ensured; fifthly, the viscocity and the lubrication of the oil can be maintained after a ultralong driving process; sixthly, the oil has the good detergent dispersing performance, and the dust deposition amount is less after the oil is used for a long time; seventhly, theoil has the good biodegradability; and eighthly, the oil has low condensation point and can be widely applied to bad working environments such as low temperature and cold.

The invention provides environmentally-friendly energy-saving-type heavy loading screw compressor oil. The environmentally-friendly energy-saving-type heavy loading screw compressor oil comprises 90-95% of composite base oil and 10%-5% of other additives in percentage by weight. Poly Alpha-Olefins (PAO) and dioctyl sebacate are compounded to serve as the base oil of the environmentally-friendly energy-saving-type heavy loading screw compressor oil. The environmentally-friendly energy-saving-type heavy loading screw compressor oil provided by the invention has the advantages of good operating characteristics, long service life and good biodegradability and also has effects of improving the efficiency of a screw compressor, reducing the abrasion and corrosion of a screw, effectively prolong the service life and the oil draining period of the screw compressor and meeting the requirements under special service conditions. The environmentally-friendly energy-saving-type heavy loading screw compressor oil provided by the invention is not only suitable for the requirements of various middle-heavy loading screw compressors under service conditions, and but also can meet the lubrication, cooling and sealing requirements of the middle-heavy loading sliding vane compressors.

The invention relates to a universal gear lubricating oil composition. The universal gear lubricating oil composition comprises a hindered phenol compound, an extreme pressure-antiwear additive, a metal passivator, an ashless friction modifier and a major amount of lubricating base oil, wherein the hindered phenol compound has a structure as shown in a formula (I) which is described in the specification. Each group in the formula (I) is as defined in the specification. The universal gear lubricating oil composition in the invention can meet the increasingly stringent requirement of modern products with higher specifications on oxidation resistance and show excellent cleaning and dispersion properties, anti-wear performance and anti-rust performance.

The invention relates to the field of engine oil and particularly discloses synthetic diesel engine oil and a preparation method thereof. The synthetic diesel engine oil comprises the following components in percentage by weight: 5.31-11.5% of a composite additive, 5.0-9.0% of a viscosity index improver, 70-85% of oil soluble polyalkylene glycol and the balance of base oil. The synthetic diesel engine oil has the following benefits: the composition is reasonable, and the high-temperature oxidation stability, thermal stability, detergent-dispersibility and long oil change period are highlighted; at high temperature, the synthetic diesel engine oil film is tougher, and at low temperature, the synthetic diesel engine oil has higher flow rate and higher starting protective capacity, so that oil is saved; in addition, the synthetic diesel engine oil has excellent detergency property, is suitable for a vehicle which is frequently under long-distance, heavy-load and climbing working environments and frequently goes to areas with greatly different climates and terrains, and can be used for lubricating a naturally aspirated diesel engine or turbocharging heavy loading diesel engine equipped with an EGR, a DPF, and an SCR emission control device.

The invention relates to the field of lubricating oil, and discloses high oxidation resistance long-life complete synthesis screw air compressor oil and a preparation method thereof. The oil comprisesthe following components in mass percent: 0.8 to 4 percent of at least two antioxidants, 0.05 to 1 percent of at least one metal deactivator, 0.1 to 1 percent of at least ashless anti-wear additive,0.005 to 0.1 percent of at least one defoaming agent, 0.001 to 0.1 percent of at least one demulsifier, and at least one synthetic base oil for the surplus. Saturated polyol ester and polyether in theoil has good cleaning and purifying effects on oil sludge, further prevents the production of colloid and prevents carbon deposition from being produced in the air compressor oil. As PAO oil does nothave the effect of oil sludge dispersion, when the PAO oil is selected as base oil, the saturated polyol ester and oil-soluble polyether are supplemented to be as solubilizers to dissolve and disperse the oil sludge.

The invention relates to a lubricating oil composition for a diesel engine. The lubricating oil composition comprises a hindered phenol compound, an antioxidant, an ashless dispersant, a metal detergent, ZDDP, an ashless friction modifier and a major amount of lubricating base oil, wherein the hindered phenol compound has a structure as shown in a formula (I) which is described in the specification. Each group in the formula (I) is as defined in the specification. The lubricating oil composition for the diesel engine in the invention can meet the increasingly stringent requirement of modern products with higher specifications on oxidation resistance and show excellent cleaning and dispersion properties, anti-wear performance and anti-rust performance.

The invention discloses a cleaning and dispersing agent for bio-based methanol gasoline and a preparation method of the cleaning and dispersing agent. The cleaning and dispersing agent consists of 30-40% of surfactant ingredient, 32-35% of dispersing peat ingredient and 30-35% of cleaning and washing ingredient; and the cleaning and dispersing agent product is prepared through uniformly mixing the three functional ingredients at normal temperature. According to the cleaning and dispersing agent and the preparation method of the cleaning and dispersing agent, cleanable, environmental-friendly, reproducible and degradable petroleum yeast fatty acid is selected as a cheap additive, so that the energy is saved and the emission is reduced; and compared with the prior art, the cleaning and dispersing agent is low in cost, non-toxic, free of pollution, low in dosage and remarkable in cleaning and dispersing effect and cannot cause secondary pollution to the environment. According to the cleaning and dispersing agent and the preparation method of the cleaning and dispersing agent, organic modification is carried out by using substances such as the yeast fatty acid, morpholine and fatty-amine calcium salts, so that the special cleaning and dispersing agent for the methanol gasoline is synthesized; and the cleaning and dispersing agent disclosed by the invention has the advantages that the formation of carbon deposit can be prevented effectively, formed carbon deposit is removed, a fuel injection nozzle, an air inlet valve and a combustion chamber of a gasoline engine are effectively prevented from emergence and production of carbon deposit, and the removal ratio is up to 32.12-64.14%.

The invention relates to the technical field of lubricating oil, and particularly provides environment-friendly fully synthetic diesel engine oil which is composed of the following components in partsby weight: 77.2 parts of base oil, 5 parts of a detergent, 3 parts of an ashless dispersant, 1.2 parts of an antirust agent, 0.7 parts of an antioxidant, 4.4 parts of an extreme pressure agent, 0.5 parts of a friction modifier, 7.7 parts of a viscosity index improver, 0.3 parts of a pour point depressant, 0.3 parts of an anti-foaming agent, and 50 ppm of a demulsifying agent. The base oil is prepared by mixing mPAO8 which is catalytically synthesized by adopting metallocene, deeply hydrogenated and optimized straight-chain third-class mineral oil 250N and phthalate, and the mass ratio of mPAO8 to third-class mineral oil 250N to phthalate is 2: 2: 1. The low-viscosity diesel engine oil has the advantages that the base oil is blended according to a scientific proportion, the low-temperaturefluidity of the oil product is effectively improved, the oxidation resistance of the oil product is improved, the oil change period of the oil product is prolonged, the pollution degree of waste oilto the environment is reduced, the energy loss of the low-viscosity diesel engine oil is reduced, and the transmission efficiency of an engine is improved.

The invention discloses lubricating oil detergent and a preparation method thereof. The detergent is prepared from the following raw materials in parts by weight: 1 part of linoleic acid, 1-2 parts of neutral oil, 1-6 parts of calcium hydroxide, 0.2-1 part of calcium oxide, 0-0.1 part of calcium chloride, 3-10 parts of solvent, 0.2-1 part of methanol, 0.1-0.5 part of water and 0.1-0.4 part of carbon dioxide. The preparation method of the lubricating oil detergent comprises the following steps of: a high-alkalinity reaction, a neutralization reaction and the like. The lubricating oil detergent disclosed by the invention has better detergency and dispersibility and strong corrosive acid neutralization capacity, and is uniform in calcium carbonate grain size distribution. In the whole reaction process, the preparation and treatment process is simple, free of a high-temperature treatment process and easy to realize on the device. Moreover, most of the materials are regenerative, higher in biodegradability and capable of satisfying the green and environmentally-friendly requirements.

The invention relates to a lubricating oil composite, in particular to a hydrodynamic drive lubricating oil composite for engineering plants, belonging to the technical field of lubricating oil. The lubricating oil composite mainly contains the following components in percentage by weight: mixture of 93-95% of hydrotreating base oil and 2.0-2.4% of polymethyl methacrylate of which the number-average molecular weight is 50000-60000, 0.5-1.0% of phosphite ester, 0.5-1.0% of boronizing thiophosphate phosphorothioate amine salt, 0.5-1.0% of sulfurized isobutene, 0.1-0.3% of nitrogen-contained thiophosphoric acid molybdenum, 0.1-0.3% of amine-type antioxidant, 0.1-0.3%of phenol type antioxidant and 0.1-0.3% of benzotriazole antiseptic antirusting agent. The lubricating oil composite has the beneficial effects of comprehensive performance and wide application range, energy consumption is not reduced while quickly and frequently shifting, less friction heat is generated, and the durability of a clutch sheet is improved. The labor intensity of workers and mechanical maintenance cost are lowered while improving work efficiency, and the lubricating oil composite also has good market prospect.

The invention relates to a high-speed diesel fuel engine lubricating oil composition in a railway. The high-speed diesel fuel engine lubricating oil composition comprises a hindered phenol compound, a dispersing agent, a metal cleaning agent, an anti-wear reagent at extreme pressure, an ashless friction improver and a main amount of lubricating oil base oil. The structure of the hindered phenol compound is shown as the formula (I), the formula (I) is shown the specification, and the definitions of all groups in the formula (I) are shown in the specification. The high-speed diesel fuel engine lubricating oil composition in the railway can meet the increasingly strict requirement of current products with higher specifications for oxidation resisting performance, and shows excellent clean dispersing performance, antiwear performance and antirust performance.

The invention relates to a formula and a production technology of special lubricating oil for a dual-fuel engine. The lubricating oil is characterized by comprising base oil and an additive, wherein imported hydrogenated mineral base oil 500SN and 150SN are adopted as the base oil, the additive consists of a complexing agent S1880, a viscosity index improver OCP, a pour point depressant 1-248 and an anti-foaming agent T901, and the base oil and the additive are mixed according to a certain proportion. The lubricating oil is prepared by refining and blending hydrogenated base oil and special complex additives for imported dual fuels, and has better anti-oxidization capability and nitration resisting stability at higher temperature; the lubricating oil has protection and more excellent lubrication effects on parts difficult to lubricate, and can reduce the emission of harmful gas and generation of waste engine oil to purify the environment; the lubricating oil has excellent cleanliness and dispersion properties, and the generation of oil sludge and carbon deposit can be effectively inhibited, so that the engine can be cleaner, the oil is not easily aged, and the service life of the engine can be prolonged.

The invention relates to a marine cylinder oil complexing agent. The cylinder oil complexing agent comprises, by weight, 15-25% of an ultra-high base number sulphonate clearing agent, 35-45% of an ultra-high base number phenate clearing agent, 20-30% of an ultra-high base number naphthenate clearing agent, 0-8% of a dispersing agent, 0-4% of an antiwear agent and 10-20% of high viscosity index Class I base oil 400SN / 500SN / 650SN. The cylinder oil complexing agent is characterized in that the complexing agent meets requirements of a blender-on-board (BOB) system technology for the viscosity andthe base number of the complexing agent, can be prepared on line, is wide in application range, can be mixed with domestic and foreign system oil of various models and brands to be prepared into cylinder oil of different base numbers, is excellent in wear-resistant performance, antioxidant performance and high-temperature clearing performance, meets performance requirements of marine engines, is good in solution stability and compatibility and does not affect the lubrication performance of the cylinder oil.

The invention relates to a hydraulic oil composition. The hydraulic oil composition contains a screening phenolic compound, an extreme-pressure antiwear additive, a metal deactivator, an antirusting agent, an ashless friction modifier, an anti-emulsifier and a major volume of lubricating oil base oil; and the structure of the screening phenolic compound is represented by a formula (I) shown in the description, wherein all groups in the formula (I) are as defined in the description. The hydraulic oil composition disclosed by the invention can meet the increasingly severe requirements of current higher-specification products on oxidation resistance and further display excellent cleaning and dispersion properties, wear resistance and rust resistance.

The invention relates to a composite diesel energy-saving detergent and a preparation method thereof; the preparation method comprises; first, saponifying, in a reactor, an organic acid into a transparent homogeneous liquid via sodium hydroxide solution; second, reacting with rare-earth saline solution, allowing separation, collecting supernate, and refining to obtain organic acid rare earth; third, adding a dispersant, nitrate, an antioxidant and Mannich base to the organic acid rare earth, and mixing well to obtain the product, the composite diesel energy-saving detergent. The composite diesel energy-saving detergent has a high content of effective ingredients and has good diesel solubility and deterging dispersibility, the preparation method is environmentally friendly and safe, and the composite diesel energy-saving detergent and the preparation method thereof have significant market advantages.

The invention relates to a lubricating oil composition for a four-stroke motorcycle engine, comprising a shielded phenol compound, an antioxidant, an ashless dispersant, a metal clearing agent, ZDDP, an ashless friction improver and a main amount of lubricating oil base oil, wherein the structure of the shielded phenol compound is as shown in a formula (I)(as shown in the specification), and the definition of each group is as shown in the specification. The lubricating oil composition for the four-stroke motorcycle engine not only can meet the increasingly strict requirement of higher standard products on antioxygenic property, but also exhibits excellent clearing dispersion property, abrasion resistance and antirust property.

The invention discloses a coal water slurry blended fuel engine oil composition. Polyinternalolefins and castor-bsae dioctyl sebacate used as base oil are matched with multiple composite additives to obtain the composition. The composite additives comprise an antiwear additive, an antioxidant preservative, an antifoam agent, a demulsifying compound, a viscosity index improver, a metal passivator, a detergent agent, a dispersing agent, an antioxidant, an oily agent, a friction improver, a reinforcing agent and a rust inhibitor. The engine oil composition has excellent cleaning and dispersion effects, prevents the piston ring from sticking, and keeps the engine clean. Due to excellent viscosity-temperature characteristic, excellent alkali number retentivity, acid neutralizing capacity and demulsifying capacity, the engine oil composition can inhibit the black oil sludge from generation, so that the engine is cleaner. Due to favorable high-temperature oxidation stability, high shear stability, favorable rubber compatibility, favorable cold-starting property and excellent fuel economical efficiency, the engine oil composition can not corrode or tarnish the moving parts, ensures the oil product to maintain sufficient oil film strength, has better extreme-pressure abrasion resistance, and lowers the abrasion and engine oil consumption.

The invention relates to a quenching oil composition. The quenching oil composition comprises a shielding phenol compound, a cooling accelerant, a brightening agent, an antirusting agent and a main amount of lubricating oil foundation oil; the structure of the shielding phenol compound is expressed by a formula (I); and in the formula (I), each radical is defined as the specification. The quenching oil composition can satisfy the increasingly harsh requirements on oxidation resistance by present higher-specification products, and shows excellent clean dispersion performance, corrosion resistance and rust resistance.

The invention relates to gasoline additive used to reduce oil consumption and dirt content in discharging end gas and its preparation and using methods. The additive contains polyisobutylene imide compound, dialkyl thio-phosphoric salt, alkyl polyoxyethylene polyoxy propylene ether, polyhydric alcohol fatty acid ester polyethenoxy ether, and solvent. And its preparation method includes the following steps: adding the above last three in proportion; mixing the first two in proportion; heating the mixture to 30-40 centigrade degree; and stirring. Its addition level is 0.05%-0.5%. And its advantages are that it has the performance of oxidation resistance and anticorrosion etc; and it can reduce oil consumption and dirt content in discharging end gas.

The invention discloses lubricating oil for a diesel engine. The lubricating oil is prepared from the following raw materials in parts by weight: 80-100 parts of base oil, 5-10 parts of a sulfonate detergent, 3-7 parts of a dispersing agent, 1-8 parts of an antioxidant, 2-5 parts of an anti-foaming agent and 2-10 parts of tricresyl phosphate, wherein the base oil is type-I and type-II lubrication oil base oil classified according to the API standard; the sulfonate detergent is calcium sulfonate with a high alkali value of 380-400mgKOH / g; the dispersing agent is polyisobutene disuccinimide; the antioxidant is p-di-iso-octyldiphenylamine; the anti-foaming agent is methyl silicon oil. The lubricating oil for the diesel engine is good in component compatibility, relatively good in detergency and dispersibility, anti-oxidation corrosion, wearing resistance and shearing stability, and ensures that an oil product still has appropriate viscosity when the engine is in a low temperature, high temperature and high shearing environment.

The invention relates to two-film lubricating oil, which is prepared from the following raw materials in percentage by mass: 0.8 to 2.5 percent of characteristic additive, 1.7 to 3.8 percent of antioxidant, 1.6 to 4.8 percent of detergent, 1.0 to 3.4 percent of dispersing agent, 1.0 to 9.0 percent of viscosity index improver, 0.3 to 0.8 percent of pour point depressant, 0.006 to 0.01 percent of antifoaming agent and the balance of base oil. The invention has the advantages that: the two-film lubricating oil is anticorrosive and antirust, effectively removes carbon deposit and even removes the original rust stain of an engine, has longer service life and lower cost, is environmentally-friendly, and has high antiwear and antifriction performance and a good fuel saving effect, wherein the fuel saving ratio of an automobile per 100 kilometers is 6 to 10 percent, the fuel saving ratio of a large truck per 100 kilometers is 6 to 9 percent, and the fuel saving ratio of a small sedan per 100 kilometers is 8 to 10 percent.

The invention discloses an oil composition for emulsified diesel oil engines. According to the oil composition, II-class base oil and polyinternalolefins are used as base oil, and a plurality of additives are matched. The oil composition comprises an antirusting agent, an oxidation-corrosion inhibitor, an anti-foaming agent, a viscosity index improver, a metal deactivator, a clearing agent, a dispersing agent, an antioxidant, a reinforcing agent, an oiliness agent and an anti-creaming agent. The oil composition for the engines has excellent clean dispersion effect, so that sediments of piston rings are reduced; the oil composition has excellent viscosity-temperature characteristics, alkali value retentivity and acid neutralization capacity, and can inhibit the generation of black oil sludge, so that the engines are relatively clean; the oil composition has good high temperature oxidation resistance stability, high shear stability, anti-emulsifying property, rubber compatibility, good low temperature startability, excellent fuel economy performance and has no corrosion and rusting for moving parts, enough oil film strength of oil is guaranteed, and the abrasion and the oil consumption are reduced.

The invention discloses anti-coking alkylbenzene synthesis heat conduction oil. The anti-coking alkylbenzene synthesis heat conduction oil mainly comprises the following ingredients: alkylbenzene base oil, amine antioxidants, phenolic antioxidants, clearing agents and dispersing agents, wherein the content of the alkylbenzene base oil is not lower than 95 in percentage by weight; the initial boiling point of the alkylbenzene base oil is greater than 320 DEG C; the density of the alkylbenzene base oil is greater than 0.83g / cm(3); the flashing point of the alkylbenzene base oil is greater than 180 DEG C; the carbon residue of the alkylbenzene base oil is smaller than 0.02%; the acid value of the alkylbenzene base oil is smaller than 0.02mg KOH / g; the pour point of the alkylbenzene base oil is smaller than minus 55 DEG C; and copper corrosion is smaller than 1 level. The anti-coking alkylbenzene synthesis heat conduction oil has the advantages of high clearing performance, high dispersing performance, low high-temperature degradation, high oxidation resistance, high coking resistance, high sedimentation resistance and long service life. The self-cleaning property is high, and the high cleanliness of the anti-coking alkylbenzene synthesis heat conduction oil can be kept for a long time.

The invention relates to the technical field of lubricating oil, in particular to lubricating oil for diesel engines. The lubricating oil comprises, by weight, 60-80 parts of base oil, 20-30 parts of surfactants, 3-9 parts of antioxidants, 2-6 parts of polytetrafluoroethylene, 5-8 parts of cleaning agents and 6-12 parts of corrosion inhibitors. The lubricating oil has the advantages that component compatibility is high; the lubricating oil does not contain metal cleaning agents and has low ash content, high cleaning dispersity is achieved, and high cleanness of pistons of the engines can be kept; oxidation and corrosion resistance and shear stability are high, and proper viscosity of the oil can be kept when the engines are in low-temperature, high-temperature or high-shear environments; abrasion resistance is high, DPF (diesel particulate filter) blocking is prevented, and valve train abrasion is reduced; environment burdens are reduced.

The invention relates to a two stroke engine lubricating oil composition including a hindered phenol compound, an ashless dispersant, a metallic detergent, ZDDP, organic molybdenum, an ashless friction modifier and the main content of lubricating oil base oil; the structure of the hindered phenol compound is as shown in formula (I) in the specifications, groups are as defined in the specifications. The two stroke engine lubricating oil composition can meet the increasingly-stringent oxidation resistance requirements of high specification products, and can also show excellent clean dispersion properties, anti-wear and anti rust properties.

The invention discloses a compressor oil composition which comprises the following components in percentage by weight: 0.2-0.6 percent of antioxidant, 0.2-0.8 percent of ashless complexing agent A, 0.2-0.8 percent of ashless complexing agent B, 0.01-0.3 percent of ashless antiwear agent, 0-0.1 percent of anti-foaming agent and the balance of basic oil, wherein the basic oil comprises cut narrow fraction hydrogenated mineral oil and cycloparaffin basic oil. According to the compressor oil composition, the two complexing agents are matched and play a synergic enhancement effect, so that the compressor oil composition has comprehensive, balanced and excellent properties, such as oxidation stability, extreme pressure antiwear property, anti-rust property and demulsification property and is not easy to generate greasy filth; and meanwhile, the basic oil has high dissolubility, excellent low-temperature property and other properties, so that the compressor oil composition has excellent high-temperature oxidation stability, cooling property and extreme pressure antiwear property on the whole, and especially has excellent detergency and dispersancy and greasy filth and carbon deposit resistance property.

The invention relates to the technical field of lubricating oil and discloses high-grade full-synthetic steam turbine oil and a preparation method thereof. Raw material ( / b) (b) of the high-grade full-synthetic steam turbine oil comprises the following components in parts by weight: poly-a-( / b) (b) olefin, alkyl naphthalene synthetic oil, perfluorinated hydrocarbon type synthetic oil, compound additives, cycloalkyl hydrochloric acid, an multi-ammonium salt additive and an organic crystal cosolvent. The raw materials of the high-grade full-synthetic steam turbine oil provided by the invention are simple and easy to obtain, the production method is simple and easy to operate, large-batch production can be realized, the production period is short, the production efficiency can be effectively improved, and the energy consumption can be reduced; and furthermore, the reactions of the additives are more complete in comparison with the existing process, the production cost is low, the production process is safe and reliable, and the high-grade full-synthetic steam turbine oil is an environment-friendly product. Compared with the traditional production method, by adopting the preparation method provided by the invention, the cost can be saved by 23% on average for the ( / b) (b), the lubrication performance under high-temperature extreme pressure is simultaneously improved, the detergency and the dispersibility are good, the wear resistance is relatively good, the oil product has effective adhesiveness of an oil film under long-term still status, and the good lubrication effect of the oil product can be further ensured.

The present invention relates to a gasoline engine lubricating oil composition, comprising shielding phenolic compounds, antioxidants, ashless dispersants, metal detergents, ZDDP, organic molybdenum, ashless friction modifiers and a major amount of lubricating oil base oil; The structure of shielding phenol compound is shown in formula (I): The definition of each group in the formula (I) is the same as the description. The gasoline engine lubricating oil composition of the present invention can not only meet the increasingly stringent requirements for oxidation resistance of today's higher specification products, but also exhibit excellent cleansing and dispersing properties, anti-wear properties and anti-rust properties.