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Engine lubricating oil composition suited for III base oil

A technology of lubricating oil composition and mixture, which is applied in the field of lubricating oil, and can solve the problems that do not involve hydroisomerization treatment of Class III base oils, etc.

Inactive Publication Date: 2004-08-25
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Domestic patents CN96105364, CN96105363, CN93104291 and foreign patents US4717489 and US5490945 all involve lubricating oil compositions meeting API CD grade oils, but their base oils do not involve hydroisomerization treatment of Group III base oils (GROUP III)

Method used

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  • Engine lubricating oil composition suited for III base oil
  • Engine lubricating oil composition suited for III base oil
  • Engine lubricating oil composition suited for III base oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Prepare a full-component 15W / 40CD diesel engine oil, which contains modified alkyl salicylate calcium, high alkali value sulfonate, sulfurized alkyl phenate calcium, dienyl succinimide ashless dispersant, borated bis Alkenyl succinimide ashless dispersant, zinc dialkyldithiophosphate phenolic and amine secondary antioxidants. The data thus obtained are listed in Table 1.

[0022] Comparative example 1

[0023] Note: The base oil is a Group III (GROUP III) base oil compounded with an appropriate amount of pour point depressant, antifoaming agent and viscosity index improver.

Embodiment 2

[0025] Prepare a full-component 15W / 40CD diesel engine oil, which contains modified alkyl salicylate calcium, mixed matrix metal detergent, sulfurized alkyl phenate calcium, dienyl succinimide, borated dienyl butanedi Imide ashless dispersant, zinc dialkyldithiophosphate, phenolic auxiliary antioxidant and amine auxiliary antioxidant. The data thus obtained are listed in Table 2.

[0026] Comparative example 3

[0027] Note: The base oil is a Group III (GROUP III) base oil compounded with an appropriate amount of pour point depressant, antifoaming agent and viscosity index improver.

Embodiment 3

[0029] Prepare a full-component 20W / 40CD diesel engine oil, which contains modified alkyl salicylate calcium, high alkali value sulfonate, sulfurized alkyl phenate calcium, dienyl succinimide ashless dispersant, boron bis Alkenyl succinimide ashless dispersant, zinc dialkyl dithiophosphate, amine antioxidant and phenolic antioxidant. The data thus obtained are listed in Table 3.

[0030] Example 4

[0031] Note: The base oil is a Group III (GROUP III) base oil compounded with an appropriate amount of pour point depressant, antifoaming agent and viscosity index improver.

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Abstract

The present invention relates to an engine luboil composition applicable to base oil (group III), in particular, it is a luboil composition of diesel engine which is applicable to base oil (group III). It is characterized by that it contains lots of hydroisomerized base oil (group III), and said composition also contains proper quantity of modified salicylate, high base number sulfonate, high base number sulfurized alkylphenol salt, disuccinyl imine ashless dispersant, boronized disuccingl imine ashless dispersant, zinc dialkyl dithiophosphate, phenolic auxiliary antioxidant and amine auxiliary antioxidant. Said luboil composition can meet the liubricating requirements of API CD grade diesel engine oil.

Description

(1) Technical field [0001] The invention relates to an engine lubricating oil composition, in particular to a lubricating oil composition suitable for Group III (GROUP III) base oils and used for diesel engines, and belongs to the technical field of lubricating oils. The composition has excellent high-temperature detergency, dispersibility, anti-oxidation and anti-corrosion properties and anti-wear properties, and can meet the specification requirements of API CD diesel engine oil. (2) Background technology [0002] Due to the different national conditions in my country and foreign countries, the requirements for lubricating oil in the automobile and engine manufacturing industries are also different from those in foreign countries. The demand for medium and low-end (SD, CC) engine oil still accounts for about 50% of the total amount of engine oil. However, with my country's official accession to the WTO, more advanced heavy-duty diesel vehicles and production technologies w...

Claims

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Application Information

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IPC IPC(8): C10M101/02C10M137/06
Inventor 汤仲平孙丁伟荆海东文斌
Owner PETROCHINA CO LTD
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