108 results about "Total Base Number" patented technology

A composition of matter comprising an amine acylated with a hydrocarbyl group substituted carboxylic acylating agent containing an average of from 1.3 to 1.6 groups derived from α,β-unsaturated carboxylic compounds per M_n of the hydrocarbyl group, wherein the hydrocarbyl group has M_n determined by GPC ranging from 1500 to 3000, the amine comprises polyamine bottoms and said acylated amine has total base number (TBN) ranging from 17 to 35. A method for preparing the composition, lubricating oils containing the composition and, in another embodiment, lubricating oil compositions of this invention further comprising a metal overbased sulfonate detergent.

The invention provides a method for preparing high base number (TBN400) synthetic calcium alkyl-benzene sulfonate. The method comprises the following steps of: adopting a mixed acid of long-chain linear alkyl-benzene sulfonic acid and high-boiling heavy alkyl-benzene sulfonic acid, calcium oxide and/or calcium hydroxide, low-carbon alcohol, alkaline-earth metal halide or nitrate, and a mixture of alkaline-earth metal alkylphenol or alkaline-earth metal alkylphenate and polyisobutylene succinic anhydride for a neutralization reaction in the presence of a solvent and cutback oil at a temperature of between 40 and 80 DEG C; then, passing through carbon dioxide to a product of the neutralization reaction at a temperature of between 40 and 60 DEG C for a carbonation reaction; and producing high base synthetic alkyl-benzene sulfonate with a total base number (TBN) of 400mgKOH/g by adopting a process of a one-step method. The product is divided into high-base number (TBN400) synthetic alkyl-benzene sulfonate containing chlorine and high-base number (TBN400) synthetic alkyl-benzene sulfonate without the chlorine. The product produced by adopting the method with low viscosity, small turbidity, easy filtration, light color and no skin formation has the advantages of excellent high-temperature detergency, excellent anti-foaming property and excellent heat storage stability.

The present invention relates to a low phosphorus lubricating oil composition for internal combustion engines which demonstrates fuel economy benefits while also providing high temperature oxidation, piston deposits, and wear. The lubricating oil composition of the present invention comprises: a) major amount of a base oil of lubricating viscosity; b) from about 0.1 to 10 wt % of an overbased alkaline earth metal alkyl aryl sulfonate detergent having a total base number (TBN) of about 25 to 500; c) from about 0.02 to 10 wt % of a oxymolybdenum-containing complex; d) from about 0.1 to 5 wt % of a friction modifier; and e) from about 0.2 to 10 wt % of an antioxidant selected from the group consisting of a diphenylamine type, a sulfurized ester-containing compound and mixtures thereof; wherein the total concentration of the oxymolybdenum-containing complex and antioxidant must be at least 1.3 wt %, based on the total weight of the lubricating oil composition and wherein the phosphorus content of the total lubricating oil composition is 0.08 wt % or less, based on the total weight of the lubricating oil composition.

A lubricating oil composition having a total base number of at least about 8, comprising a major amount of oil of lubricating viscosity; an amount of one or more dihydrocarbyl dithiophosphate metal salt introducing into the lubricating oil composition no more than 0.06 wt. % of phosphorus; at least 1.2 wt. % of hindered phenol antioxidant; and boron, and/or a boron-containing compound or compounds in an amount providing the lubricating oil composition with at least 200 ppm by weight of boron, all weight percentages being based on the total weight of the lubricating oil composition.

A lubricant additive composition comprising (a) a carboxylated detergent-dispersant obtained by (i) neutralizing alkylphenols using an alkaline earth base in the presence of at least one carboxylic acid that contains from one to four carbon atoms but in the absence of alkali base, dialcohol, and monoalcohol, forming an intermediate product, then (ii) carboxylating the intermediate product using carbon dioxide so that at least 20 mole percent of the original alkylphenol starting material has been converted to single aromatic-ring hydrocarbyl salicylate; and (b) an overbased, non-sulfonate-containing detergent such as, for instance, a hydrocarbyl phenate-carboxylate; a medium overbased salicylate having a total base number of about 50 to 170; a high overbased salicylate having a total base number greater than 170; or an overbased sulfurized hydrocarbyl phenate of alkaline earth metals; and combinations and mixtures thereof. Also provided for are additive packages and finished lubricating oil compositions comprising the same. The compositions of this invention reduce sludge and contaminant formation, especially in low and medium speed diesel engines and in marine diesel engines.

A method of monitoring deterioration of lubricating oil and a device therefore capable of judging deterioration of the oil with high accuracy suppressing measurement error due to mixing of foreign matter in the oil. Correlation between relative permittivity and TBN (total base number) of the lubricating oil is obtained beforehand (step S1), electric current and voltage are measured (step S2) when high-frequency voltage is applied between a pair of electrodes located in an oil path in a gas engine, permittivity of the oil is detected (step S3) based on the measurement of current and voltage, TBN of the oil is obtained (step S4) from the correlation between relative permittivity and TBN, and deterioration of the oil is judged by the obtained value of TBN.

A method and apparatus for determining the total base number of a used lubricant from an open, all loss, lubricating system. An AC voltage signal is applied between electrodes immersed in the used lubricant and a used-lubricant dependent response to the applied signal measured. The used lubricant base number is determined from the response. To allow for changes in the fresh lubricant inputted to the open lubricating system, the method and apparatus can have means for determining properties of the fresh lubricant needed to determine the total base number of used lubricant. To allow for possible contamination of the used lubricant, the method and apparatus can have means for determining the concentration of contamination and for determining properties of the contaminant needed to determine the total base number of used lubricant.

The invention discloses a method for rapidly measuring physical and chemical quality indexes of in-use lubricating oil, which comprises the following steps: in a first step, collecting representative samples as a training set; in a second step, measuring an infrared spectrum decay index of the in-use lubricating oil; in a third step, measuring in-use oil physical and chemical quality indexes; in a fourth step, adopting a gradual linear regression method to carry out optimization on the infrared spectrum decay index and establishing a multiple linear regression equation of the physical and chemical indexes and the infrared spectrum decay index; and in a fifth step, for an in-use oil sample, firstly measuring the infrared spectrum decay index and then utilizing the regression equation established in the fourth step to calculate the physical and chemical quality indexes. The method of the invention can rapidly measure seven physical and chemical quality indexes of the in-use lubricating oil, i.e. a kinematic viscosity at the temperature of 40 DEG C, a kinematic viscosity at the temperature of 100 DEG C, water content, a total acid number (TAN), a total base number (TBN), a flash point and a pour point, monitor the quality decay of the lubricating oil, guide to change the oil and guarantee the normal operation of the engine.

The invention discloses a quick detection method of oil quality spectrum for lubricating oil, comprising the following steps: 1, collecting a lubricating oil sample with representativeness as a training set; 2, measuring the infrared spectrum of the training set sample; 3, measuring the quality index of the training set sample; 4, selecting a proper variable preference technology, preferably selecting a proper characteristic wavelength, taking the absorbance of the characteristic wavelength as a variable, and building the linear regression equation of each quality index and absorbance; 5, forthe quality detection of unknown lubricating oil samples, firstly measuring the infrared spectrum thereof, selecting the absorbance of wavelength with the same characteristic, and measuring each quality index of lubricating oil by the built liner regression equation. The invention quickly measures seven quality parameters, such as oil water content, total acid number, total base number, 40 DEG C viscosity, 100 DEG C viscosity, flash point, pour point and the like of lubricating oil and monitors lubricating oil quality. The quick detection method has high analysis speed and simple operation and greatly improves lubricating oil quality monitoring capability.

A system includes a sensor configured to be in contact with lubricant within an engine of a vehicle system. The sensor includes a sensing region circuit that is configured to generate stimuli at different times during an operational life of the engine. The system also includes one or more processors configured to receive signals from the sensor. The signals are representative of responses of the lubricant to the stimuli. The one or more processors are configured to analyze the responses and determine a characteristic of the lubricant that represents one or more of a total base number (TBN) or a total acid number (TAN) of the lubricant. The one or more processors are configured to determine an unhealthy state of one or more of the engine or the lubricant based on the characteristic of the lubricant that is determined.

The invention relates to the technical field of a composite calcium-sulfonate-base grease and preparation thereof, particularly a composite calcium-sulfonate-base lubricating grease and a preparation method thereof. The preparation method of the composite calcium-sulfonate-base lubricating grease comprises the following step: 1. respectively weighing 20-30 parts by weight of high-base-number petroleum calcium sulfonate with the total base number of 200-400 mg KOH/g, and 44-55 parts by weight of high-viscosity-index base oil with the viscosity index of 90-120. The invention has the advantages of simple technique, accessible raw materials and safe working environment, is convenient for operation, and effectively lowers the energy consumption; the product obtained by the method provided by the invention has excellent properties, and can satisfy the product index requirements without adding any additive, and thus, the production input cost of the product is lower than that of any other high temperature grease; no harmful substance is generated in the product production and use process, so the composite calcium-sulfonate-base grease is harmless to the human body; and the composite calcium-sulfonate-base grease can be recycled and reutilized to maximize the use of energy sources, thereby completely satisfying the requirements of energy saving and environmental protection.

The invention provides a lubricating composition containing a diarylamine, an aminobenzene and an oil of lubricating viscosity. The invention further relates to the use of the lubricating composition in an internal combustion engine. The invention further relates to the use of the lubricating composition to improve TBN retention.

The invention provides a performance analysis experiment of internal combustion engine oil, and relates to the field of internal combustion engine oil technology. The performance analysis is as follows: (1) viscosity change; (2) changes of acid value and total base number; (3) differential infrared spectroscopic analysis result; (4) spot dispersibility test; (5) metal content, which can prolong vehicle maintenance time for durability, thereby the vehicle has long operation time and strong practicality.

The invention relates to a detergent for synthetic calcium alkyl benzene sulfonate type lubricating oil and a production technology. A technological process for producing a lubricating oil additive with TBN (total base number) being from 20 to 300mgKOH/g comprises the steps of reacting the following components with the lower temperature of 0 to 70 DEG.C: a component (A): synthetic alkyl benzene sulfonic acid; a component (B): alkaline earth alkali can be added or added more than once in the reaction process in a disposable manner; a component (C): an aromatic hydrocarbon solvent; a component (D): neutral oil; a component (E): water; a component (F): sulfurized calcium alkyl phenolate; a component (I): methane solution; a component (J): carbon dioxide (CO2), CO2 is fed to perform alkalization after the neutral reaction and then is filtered, the filter cakes and the component (C) are filtered after being uniformly mixed, and a filtrate is served as a solvent instead of the component (C).

A lubricating oil composition and method of operating a boosted internal combustion engine. The lubricating oil composition includes a major amount of a base oil, one or more overbased calcium-containing detergents having a total base number of greater than (225) mg KOH/gram, to provide greater than (900) ppm by weight to less than (2400) ppm by weight of calcium to the lubricating oil composition, and a low speed pre-ignition reducing amount of one or more titanium-containing compounds to provide from (10) ppm to (3000) ppm titanium and/or one or more tungsten-containing compounds to providefrom (125) ppm to (3000) ppm tungsten, all based on the total weight of the lubricating composition. The low speed pre-ignition events in the boosted internal combustion engine may be reduced relativeto a number of low speed pre-ignition events in the same engine lubricated with the same lubricating oil without the titanium- and/or tungsten-containing additive.

An ashless additive for lubricating oil compositions, lubricating oil compositions and methods for lubricating that are effective to improve the total base number (TBN) of a lubricant composition. The additive is a reaction product of a compound of the formula:

with NH₃, an alcohol, an amine, or a hydrocarbyl amine, wherein R¹ is selected from H, a hydrocarbyl group, the alcohol or amine contains from 1 to about 24 carbon atoms, and the hydrocarbyl amine has a number average molecular weight ranging from about 100 to about 6000

The invention relates to a marine cylinder oil composition as well as a preparation method and application thereof. The cylinder oil composition comprises the following components in percentage by mass: 1-8% of calcium alkylbenzene sulfonate, 3-12% of calcium alkylphenol sulfide, 0-6% of a dispersant, 0-3% of an anti-wear agent and the balance of base oil, wherein the total base number of the cylinder oil composition is 38.6-41.9mgKOH/g. The invention also provides the preparation method of the composition and the application of the composition in marine fuel in which the content of sulfur is 0.5-2.5%. The cylinder oil composition meets the application requirement of the marine fuel in which the content of sulfur is 0.5-2.5% and has excellent cleaning and dispersing properties, antioxidant and anti-wear properties and the like; by a service test of a low-speed crosshead marine engine, the comprehensive property of the cylinder oil composition can meet technical requirements of OEM.

A lubricating oil composition comprising a base oil of lubricating viscosity having a kinematic viscosity of 22 to 300 mm²/s at 40° C. and dissolved or dispersed therein the following additives in the following amounts based on a total amount of the lubricating oil composition: (1) an overbased sulfurized alkylphenol calcium salt detergent in an amount of 0.1 to 1.6 wt. % in terms of calcium content, (2) an overbased calcium alkylbenzenesulfonate detergent in an amount of 0.6 to 2.1 wt. % in terms of calcium content, (3) a nitrogen-containing ashless dispersant in an amount of 0.005 to 0.1 wt. % in terms of nitrogen content, and (4) a zinc dihydrocarbyldithiophosphate in an amount of 0.01 to 0.1 wt. % in terms of phosphorus content, wherein the weight ratio of the overbased sulfurized alkylphenol calcium salt detergent to the overbased calcium alkylbenzenesulfonate detergent is in the range of 10:90 to 40:60 in terms of calcium content and wherein the lubricating oil composition has a total base number of 30 to 60 mg·KOH/g.