Lubricating oil composition for diesel engine

A technology of lubricating oil composition and mixture, which is applied in the field of lubricating oil to achieve the effects of good detergency, good anti-oxidation and anti-corrosion performance

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

However, there are no Chinese patents related to API CF-4 grade oil

Method used

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  • Lubricating oil composition for diesel engine
  • Lubricating oil composition for diesel engine
  • Lubricating oil composition for diesel engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Prepare a full-component 15W / 40CF-4 diesel engine oil, which contains high-basic calcium alkyl salicylate, low-basic calcium alkyl salicylate, sulfurized calcium phenate, borated dienyl succinyl Amine ashless dispersant, zinc dialkyl dithiophosphate, phenolic auxiliary antioxidant, amine auxiliary antioxidant. The data thus obtained are listed in Table 1.

[0034] Comparative example 1

[0035] Note: The base oil is hydrotreated base oil compounded with an appropriate amount of pour point depressant, antifoaming agent and viscosity index improver.

Embodiment 2

[0037] Prepare a full-component 15W / 40CF-4 diesel engine oil, which contains high-basic calcium alkyl salicylate (high-basic calcium sulfonate), low-basic calcium alkyl salicylate, sulfurized calcium phenate, boron Dialkenyl succinimide ashless dispersant, zinc dialkyldithiophosphate, phenolic auxiliary antioxidant, amine auxiliary antioxidant. The data thus obtained are listed in Table 2.

[0038] Comparative example 1

Embodiment 3

[0040] Prepare a full-component 20W / 40CF-4 diesel engine oil, which contains high-basic calcium alkyl salicylate, low-basic calcium alkyl salicylate, sulfurized calcium phenate, borated dienyl succinyl Amine ashless dispersant, zinc dialkyl dithiophosphate, phenolic auxiliary antioxidant, amine auxiliary antioxidant. The data thus obtained are listed in Table 3.

[0041] Example 1

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Abstract

The present invention relates to a luboil composition for heavy-load diesel oil engine. It is characterized by that it contains lots of hydrogenated base oil. Said invented composition also contains proper quantity of high base number salicylate, low base number salicylate, sulfurized alkylphenol salt, boronized disuccinyl imine ashless dispersant, high-molecular ashless dispersant, zinc dialkyl dithiophosphate and phenolic and amine auxiliary antioxidants. Said luboil composition can meet the specification requirements of SAE J300 and API CF-4 diesel engine oil.

Description

(1) Technical field [0001] The invention relates to an engine lubricating oil composition, in particular to a lubricating oil composition for a heavy-duty diesel engine, which can meet the specification requirements of SAE J300 and API CF-4 diesel engine oil, and belongs to the technical field of lubricating 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 obviously 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 engine oil. With my country's official accession to WTO, more advanced heavy-duty diesel vehicles and production technology will be introduced, the demand for high-grade diesel engine oil will increase, and the competition in the domestic high-grade oil market will become more and more fierce. In order to furth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M101/02C10M149/00
Inventor 孙丁伟汤仲平荆海东杨政
Owner PETROCHINA CO LTD
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