Lubricating composition

a technology of compositions and lubricating substances, applied in the direction of machines/engines, mechanical equipment, non-fuel substance addition to fuel, etc., can solve the problem of insufficient detergency performance, and achieve the effect of improving engine cleanliness and detergency performan

Inactive Publication Date: 2013-12-19
SHELL OIL CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]According to a further aspect of the present invention there is provided the use of a lubricating composition as described herein for providing improved detergency performance, in particular at high temperatures.
[0009]According to a further aspect of the present invention there is provided the use of a lubricating composition as described herein for providing improved engine cleanliness.

Problems solved by technology

Unfortunately, such formulations often suffer from the problem of insufficient detergency performance at high temperatures.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

examples

[0043]Various lubricating compositions for use as SAE 15W-40 Heavy Duty Diesel Engine Oils (HDDEOs) (meeting the so-called SAE J300 Specifications as revised in January 2009; SAE stands for Society of Automotive Engineers) were formulated.

[0044]Table 1 indicates the properties for the base oils used. Table 2 indicates the composition and properties of the fully formulated Heavy Duty Diesel Engine Oils that were tested. The amounts of the components are given in wt. %, based on the total weight of the compositions.

[0045]All tested Heavy Duty Diesel Engine Oils contained a combination of a base oil blend and an additive package (which additive package was the same in all tested compositions), in addition to a Viscosity Modifier and a pour point depressant.

[0046]The “Additive package” was a special performance package for Heavy Duty Diesel Engine Oils and contained a combination of performance additives including over-based detergent, ashless dispersant, zinc anti-wear agent, anti-oxid...

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Abstract

A lubricating composition comprising a base oil blend and one or more additives wherein the base oil blend comprises: a distillate naphthenic base oil having a saturates content as measured by IP368 of greater than 92 wt % and comprising less than 10 ppm of sulphur; and a Fischer-Tropsch derived base oil. The lubricating composition of the present invention exhibits improved detergency and engine cleanliness properties.

Description

FIELD OF THE INVENTION[0001]The present invention relates to lubricating compositions, particularly to lubricating compositions which are useful as heavy duty diesel engine oils and passenger car motor oils and which have improved detergency properties.BACKGROUND OF THE INVENTION[0002]It is to be noted that, although the present invention has been explained below in relation to lubricating compositions for particular use as a heavy duty diesel engine oil or a passenger car motor oil, the present invention is not limited in any way to such oils. The present invention can be equally applied to lubricating compositions intended for other applications, such as hydraulic fluids and turbine oils. Heavy duty diesel engine oils formulated using conventionally refined API Group II base oils are known in the art. Unfortunately, such formulations often suffer from the problem of insufficient detergency performance at high temperatures. It would therefore be desirable to formulate a lubricating...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C10M105/04
CPCC10M105/04C10M111/02C10M2203/1065C10N2020/065C10N2020/02C10N2030/04C10N2030/02C10N2030/43C10N2030/52C10N2040/252C10M2205/173
Inventor WEDLOCK, DAVID
Owner SHELL OIL CO
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