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Fuel economy engine oil composition

A lubricating oil composition, overalkaline technology, applied in lubricating compositions, base materials, petroleum industry, etc.

Inactive Publication Date: 2015-03-25
CHEVRON JAPAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of the previously described lubricants address the problem of friction improvement in very low viscosity motor oils

Method used

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  • Fuel economy engine oil composition
  • Fuel economy engine oil composition
  • Fuel economy engine oil composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4 and comparative example A-D

[0126] Lubricating oil compositions were prepared by adding the below-mentioned additive components to the base oils to give the formulations described in Tables 1 and 2. The lubricating oil compositions of Examples 1-4 are in accordance with the present invention, while Comparative Examples A-D are provided for comparison and are not in accordance with the present invention. Examples 1-3 and Comparative Examples A-C were formulated to achieve a SAE viscosity grade of 0W-20 (as defined in SAE J300, January 2009 edition). Their kinematic viscosity at 100°C is 7.7-7.8mm 2 / s. Example 4 and Comparative Example D were formulated to achieve an SAE viscosity grade of 0W-4. Their kinematic viscosity at 100°C is 3.1mm 2 / s.

[0127] base oil –

[0128] a) Examples 1-3 and Comparative Examples A-C: Mineral base oils prepared by vacuum distillation, isomerization dewaxing and hydrofining (kinematic viscosity is 4.2mm at 100°C 2 / s, the viscosity index is 130).

[0129] b) Example...

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Abstract

The present invention is directed to a lubricating oil additive containing a vicinal diol and a particular detergent blend typically is low viscosity base oils whereby exhibiting improved fuel economy. In this respect, disclosed is a lubricating oil composition comprising: a major amount of base oil of lubricating viscosity; a friction modifier which is selected from the group consisting of C10-C30 alkane 1,2-diols and C10-C30 alkene 1,2-diols; an overbased alkyl alkaline earth metal hydroxybenzoate detergent having a metal ratio less than 3.0; and an overbased alkyl calcium sulfonate or an overbased alkyl calcium hydroxybenzoate having a metal ratio of 3.5 or greater.

Description

field of invention [0001] Disclosed herein are lubricating oil compositions having a specific vicinal diol friction modifier and a detergent blend with at least two types of metallic detergents. The lubricating oil composition exhibits improved frictional properties and is especially suitable for low viscosity lubricating oil compositions. Background of the invention [0002] Due to a combination of global legislation improving fuel efficiency and market demand, fuel economy has driven engine manufacturers to adopt changes in design (with less tolerances, smaller displacement, direct fuel injection, turbochargers, boosted intakes) , start / stop the engine, etc.). Additionally, hardware technologies including improved hybridization of engine designs and idle stop have created significant new performance requirements for passenger car motor oils. Not only must the motor oil be designed for these added effects, but engine oils are also seen as areas where accessory performance...

Claims

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Application Information

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IPC IPC(8): C10M163/00C10M169/04C10N40/25C10N30/06
CPCC10M163/00C10M2203/1025C10M2207/022C10M2207/026C10M2207/262C10M2207/289C10M2209/084C10M2215/064C10M2215/08C10M2215/28C10M2219/046C10M2223/045C10N2020/019C10N2020/02C10N2030/02C10N2030/40C10N2030/54C10N2030/68C10N2030/06C10N2040/25C10M2227/09C10N2010/12C10N2010/04C10N2060/14C10N2040/10C10M141/08C10M101/02C10M129/08C10M129/54C10M133/12C10M133/44C10M135/10C10M137/10C10M141/10C10M2203/1006C10M2215/223
Inventor N·乌施欧度
Owner CHEVRON JAPAN
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