摘要:
A gas-fuelled engine lubricating oil composition has a TBN in the range of 2 to 20 and comprises: (A) oil of lubricating viscosity; (B) a salicylate detergent having a TBN of 250 or less; (C) a detergent having a TBN of greater than 250; (D) an ashless dispersant; and (E) an anti-wear additive; i
摘要:
PROBLEM TO BE SOLVED: To provide a lubricating oil composition showing excellent antioxidative properties. SOLUTION: The lubricating oil composition comprises oil of lubricating viscosity and a mixture of nitro-substituted diphenylamine and diarylamine that shows very excellent antioxidative properties in synergy. COPYRIGHT: (C)2009,JPO&INPIT
摘要:
The frictional properties of gear oils are improved by including at least one overbased alkali or alkaline earth metal carboxylate, sulphonate or sulphurized phenate having a TBN of at least 200 in a gear oil which comprises: oil of lubricating viscosity at least 80% by volume of which is mineral oil, synthetic ester oil or a mixture thereof; Mannich base ashless dispersant; metal-free, sulphur-containing antiwear and/or extreme pressure agent; and metal-free, phosphorus-containing and nitrogen-containing antiwear and/or extreme pressure agent. The resultant gear oils exhibit excellent performance when used in synchromesh-based transmissions.
摘要:
This invention relates to a composition, comprising: (A) an acylated amine having a base number in the range of about 45 to about 90, said acylated amine being the product made by contacting (A)(I) at least one carboxylic acid acylating agent with (A)(II) at least one polyamine, said polyamine (A)(II) being selected from the group consisting of (A)(II)(a) a product made by contacting at least one hydroxy material with at least one amine, (A)(II)(b) an alkylene polyamine bottoms product, and (A)(II)(c) a product made by contacting a hydroxy material with an alkylene polyamine bottoms product; (B) a boron compound; and (C) an organic phosphorus acid or ester, or derivative of said phosphorus acid or ester. In one embodiment, this composition further comprises (D) a thiocarbamate. In one embodiment, this composition further comprises (E) a nitrogen-containing ester of a carboxy-containing interpolymer. These compositions are useful as additives for lubricants and functional fluids, and are particularly useful as additives for automatic transmission fluids for enhancing the torque characteristics such automatic transmission fluids.
摘要:
PROBLEM TO BE SOLVED: To provide a low sulfur, low sulfate ash and low phosphorus lubricant composition giving good anti-wear performance. SOLUTION: The low sulfur, low sulfate ash and low phosphorus lubricant composition for a low emission gas high-load diesel engine is provided by containing the following ingredients. That is, an anti-wear additive composition comprising (a) a major amount of lubricating viscosity oil and (b) ≥2 mass% metal salt of Mannich condensate based on the total mass weight of the lubricant is provided. And, a low sulfur, low sulfate ash and low phosphorus lubricant condensate is provided by containing the following ingredients. That is, an anti-wear additive composition comprising (a) a lubricating viscosity oil and (b) ≥2 mass% metal salt of Mannich condensate based on the total mass weight of the lubricant is provided. COPYRIGHT: (C)2007,JPO&INPIT
摘要:
An effective way is described for overcoming the shudder problem associated with continuous slip torque converter clutches for use in automatic transmissions, especially shudder which occurs with new friction materials before break-in. To do this, an ATF is used in which the friction modifier system consists essentially of (i) an N-aliphatic hydrocarbyl-substituted diethanolamine in which the N-aliphatic hydrocarbyl-substituent is at least one straight chain aliphatic hydrocarbyl group free of acetylenic unsaturation and having in the range of 14 to 20 carbon atoms, and (ii) an N-aliphatic hydrocarbyl-substituted trimethylenediamine in which the N-aliphatic hydrocarbyl-substituent is at least one straight chain aliphatic hydrocarbyl group free of acetylenic unsaturation and having in the range of about 14 to about 20 carbon atoms. The ATF is devoid of any tertiary amine friction modifier component and any C12-36 aliphatic hydrocarbyl succinimide or succinamide friction modifier. Specified relative proportions and concentrations of (i) to (ii) are used.
摘要:
PROBLEM TO BE SOLVED: To provide a power transmission fluid composition having improved durability of characteristics. SOLUTION: The power transmission fluid may include a base oil and an additive composition, wherein the additive composition includes an ashless dispersant and an oil-soluble aliphatic tertiary amine represented by the formula. The resulting fluid may have improved durability. Wherein, R1 is a 1-4C alkyl or alkenyl; and R2 and R3 are an alkyl, an alkylthioalkyl, a haloalkyl or the like. COPYRIGHT: (C)2005,JPO&NCIPI