Ship universal type diesel engine lubricating oil composition

Abstract

The invention relates to a lubricating oil composition used for a ship universal type diesel engine, which comprises the following components by weight: 5.2-7.4% of high temperature clearing agent, 2.6-5.2% of ash-free dispersant, 0.6-1.7% of zinc dialkyl dithiophosphate anti-oxidant, 0.0015-0.0050% of methylsilicone oil anti-foaming agent and the balance of base oil, the base oil is composed of paraffin-based solvent refining neutral base oil and 20-5% of solvent refining heavy component base oil, the high temperature clearing agent is composed of 15-25% of salt of alkylphenol sulfide, 14-25% of calcium sulfonate with low base number and the balance of alkyl-based salicylate; the lubricating oil composition can simultaneously satisfy the requirements of vessel two stroke and four stroke, and a middle-speed diesel engine and a high-speed diesel engine, and has excellent water diversion performance, high temperature cleanliness performance, good lubrication, antiwear and antirust performances, the lubricating oil composition can satisfy the usage requirement of the ship universal type diesel engine, and can prolong the usage life of the engine.

Description

technical field [0001] The invention relates to a lubricating oil composition, in particular to a lubricating oil for marine diesel engines with versatility and excellent water separation, which is applied to high-speed marine diesel engines. Background technique [0002] Due to the characteristics of high-speed operation of marine diesel engines, it is difficult for general low- and medium-speed marine diesel engine lubricating oils to meet their requirements. , especially low-speed diesel engine lubricating oil is "one-time" combustion, which is a completely different lubrication method from medium and high-speed diesel engines. It is necessary for marine diesel engine oils with cycle application, such as anti-oxidation and anti-oxidation properties; secondly, general land-use high-speed diesel engine lubricating oils such as CD30, CD40, CF40, CD15W40, and CF15W40 cannot meet the requirements of marine diesel engines. . Most marine diesel engines are equipped with centri...

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Problems solved by technology

[0007] In summary, there are no domestic and foreign literature reports on the development of marine diesel engine lubricants that are commonly used in two-stroke and four-stroke ships, and there are no domestic and foreign literature reports that can solve the water separation performance of marine diesel engine oil without using demulsifiers

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