Fuel economical lubricating oil compositions for internal combustion engines

A lubricating oil composition and technology of the composition, applied in the direction of lubricating composition, petroleum industry, additives, etc., can solve the problems of increasing the fuel consumption of the engine

Active Publication Date: 2013-07-24
CHEVRON JAPAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of low-viscosity base oils tends to lead to undesired phenomena such as increased fuel consumption during engine operation
Therefore, there are limitations to improving fuel economy by using lubricating oil compositions formulated with low viscosity base stocks

Method used

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  • Fuel economical lubricating oil compositions for internal combustion engines
  • Fuel economical lubricating oil compositions for internal combustion engines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0076] Example [1-3], and Comparative Example [1-3]

[0077] (1) Preparation of lubricating oil composition (test oil)

[0078] The lubricating oil compositions were prepared by adding the following additive components to the base oil to obtain the formulations in Table 1. Examples 1-3 are lubricating oil compositions according to the present invention, and the lubricating oil compositions of Comparative Examples 1-3 are for comparison. With the addition of a viscosity index improver, the formulated lubricating oil composition exhibits a viscosity grade of 0W20 (SAE viscosity grade) with a kinematic viscosity of 7.7-7.8 mm at 100°C 2 / s.

[0079] (2) Base oil and additives

[0080] (I) Base oil:

[0081] Mineral base oil (kinematic viscosity at 100°C is 4.1mm 2 / s, viscosity index 137), obtained from slack wax by hydrotreating, fractional distillation and dewaxing.

[0082] (II) Additives

[0083] Nitrogen-containing ashless dispersant

[0084] Ethylene carbonate post-...

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Abstract

A fuel economical lubricating oil composition for internal combustion engines comprises a base oil and an additive composition comprising an overbased metal-containing detergent and a molybdenum-containing friction modifier, in which the overbased metal-containing detergent comprises calcium salicylate having an alkyl group having an average carbon atom number of 14-18, at least 60 mol.% of the alkyl group having a carbon atom number of 14-18, and calcium sulfonate having an alkyl group having an average carbon atom number of 20-24, at least 60 mol.% of the alkyl group having a carbon atom number of 20-24, and / or calcium salicylate having an alkyl group having an average carbon atom number of 20-28, at least 60 mol.% of the alkyl group having a carbon atom number of 20-28.

Description

[0001] The claims of the present application enjoy the priority of Japanese Patent Application No. JP2011-286254 filed in Japan on 2011-12-27. Field of Invention [0002] The present invention relates to a lubricating oil composition preferably for lubricating internal combustion engines such as diesel, gasoline and gas engines mounted on land vehicles, with high fuel economy. Background of the Invention [0003] Recently, there has been an increasing demand for improving the fuel economy of land vehicles equipped with gasoline or diesel engines, such as automobiles. It is well known that improving fuel economy is primarily achieved by reducing the weight of vehicles equipped with internal combustion engines. It is also known that improvements in fuel economy can be achieved by rational selection of lubricating oil compositions for lubricating internal combustion engines mounted on vehicles. [0004] For the above reasons, up to now, many companies working on developing lub...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M141/08C10N40/25C10N30/04C10N30/06
CPCC10M2215/28C10N2240/10C10M2227/066C10M2209/084C10M2207/026C10M163/00C10M2219/068C10N2240/104C10N2230/06C10M2215/064C10M2223/042C10M2207/289C10M2205/163C10M2227/09C10M2223/045C10N2230/54C10M2207/262C10N2030/54C10N2030/06C10N2040/255C10N2040/25C10N2010/12C10N2010/04C10N2060/00C10N2060/14
Inventor N·潮田T·宫元Y·小笠原
Owner CHEVRON JAPAN
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