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Lubricating oil composition for internal combustion engine

A technology for lubricating oil composition and internal combustion engine, applied in the directions of lubricating composition, petroleum industry, base material, etc., can solve problems such as reduced efficiency, and achieve the effect of reducing the deterioration of low-temperature fluidity

Active Publication Date: 2022-03-01
JXTJ NIPPON OIL & ENERGY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the torque of the motor is high at low speeds, the higher the speed, the lower the efficiency

Method used

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  • Lubricating oil composition for internal combustion engine
  • Lubricating oil composition for internal combustion engine
  • Lubricating oil composition for internal combustion engine

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Embodiment Construction

[0040] The present invention will be described in detail below. In addition, for numerical values ​​A and B, the expression "A to B" means "A to B or more" unless otherwise specified. In such expressions, where only the value B has a unit, that unit also applies to the value A. Furthermore, the words "or" and "or", unless specifically stated otherwise, mean a logical addition. In this specification, for element E 1 and E 2 , "E 1 and / or E 2 " This expression means "E 1 or E 2 , or their combination", for the element E 1 ,...,E N (N is an integer of 3 or more), "E 1 ,...,E N-1 , and / or E N " This expression means "E 1 ,...,E N-1 , or E N , or a combination thereof”. In addition, in this specification, magnesium is also included in the “alkaline earth metal”.

[0041] In addition, in this specification, unless otherwise specified, the content of each element of calcium, magnesium, zinc, phosphorus, sulfur, boron, barium, and molybdenum in oil is analyzed by induct...

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Abstract

Provided is a lubricating oil composition for an internal combustion engine, which is capable of reducing the deterioration of low-temperature fluidity when mixed with water. A lubricating oil composition for an internal combustion engine, which contains (A) a lubricating oil base oil that is composed of a mineral oil-based base oil or a synthetic base oil and has a kinematic viscosity of 3.8-4.6 mm2 / s at 100 DEG C, (B) a metal-based detergent that contains a metal salicylate detergent, (C) a comb-shaped poly (meth) acrylate that has a weight-average molecular weight of 350,000-1,000,000 and a polydispersity of 4.0 or less, and (E) a lubricant oil composition that is composed of (A) a lubricant base oil that is composed of a mineral oil-based base oil or a synthetic base oil and that has a kinematic viscosity of 3.8-4.6 mm2 / s at 100 DEG C. And (D) a succinimide dispersant in which an unmodified succinimide dispersant and / or a boric acid-modified succinimide dispersant accounts for 70% by mass or more of the total nitrogen content. The composition has a HTHS viscosity of 2.55-2.84 mPa.s at 150 DEG C.

Description

technical field [0001] The present invention relates to lubricating oil compositions for internal combustion engines. Background technique [0002] Since its invention, the internal combustion engine has been the power source of various means of transportation for many years. In recent years, the demand for low fuel consumption of internal combustion engines has been increasing. In response to this demand, high fuel consumption performance is also required for lubricating oils for internal combustion engines. [0003] Among various means of transportation, motor vehicles are mostly used for land transportation, and the improvement of their low fuel consumption has attracted great attention. In order to further improve the fuel efficiency of automobiles, a hybrid electric vehicle including a power unit combining an internal combustion engine and an electric motor has been proposed and has been commercially successful. Hybrid vehicles are classified into two types: series-ty...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N30/04C10N30/10C10N30/12C10N40/25
CPCC10M169/048C10M2205/0206C10M2207/262C10M2209/084C10M2215/086C10M2227/06C10M2223/045C10M2219/046C10M2219/068C10M2205/04C10M2205/06C10M2215/064C10M2209/062C10M2209/086C10N2040/25C10N2030/04C10N2030/10C10N2030/12C10N2020/02C10N2010/04C10N2010/12C10N2030/02C10N2040/255C10N2020/04C10M2215/28C10M2207/026C10M2205/0285C10M2203/1025C10N2030/52Y02T10/62C10N2030/14C10N2020/071C10N2060/14C10M129/50C10M101/00C10M107/02C10M129/54C10M145/14C10M149/22C10M2217/046C10M2207/141C10M2207/144C10M169/04
Inventor 中泽裕基
Owner JXTJ NIPPON OIL & ENERGY CORP
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