Lubricating oil composition of diesel engine

Abstract

The invention relates to a lubricating oil composition of an engine, in particular to a lubricating oil composition for a heavy-load diesel engine, characterized by containing a great amount of hydrotreating base oil. The composition of the invention also contains suitable amounts of alkyl salicylates, sulfurized alkyl sulfide salts, sulphonate, macromolecular ashless dispersant, polyisobutylene-bis-succinimide ashless dispersant, zinc dialkyl dithiophosphate, phenolic antioxidant, amine-type antioxidant and sulfur-bearing antioxidant antiwear agent. The lubricating oil composition can satisfy the specification requirement of diesel engine oil CF-4, which is specified by GB11122-2006. The composition has simple prescription, low cost and convenient modulation.

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, and belongs to the technical field of lubricating oil. (2) Background technology

[0002] Environmental protection, energy saving, and extended oil change period are the main driving forces to promote the upgrading of internal combustion engine oil specifications. In order to meet the increasingly stringent environmental protection and energy saving requirements, the engine must adopt corresponding technologies to meet this requirement, and the improvement of engine technology has great impact on internal combustion engine oil. New requirements are put forward for the performance of the engine, which requires higher performance engine oil to meet the lubrication requirements of the engine. In recent years, the domestic diesel engine oil market has changed from CC and CD grade oils to CD and CF-4 grade oils. ...

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