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Lubricating oil specially used for dual-fuel engines

A dual-fuel engine and lubricating oil technology, applied in the field of lubricating oil, to achieve the effects of extending the oil change cycle, solving the problem of rapid deterioration and aging, and moderate ash content

Inactive Publication Date: 2015-03-04
CHONGQING JIAZHOU LUBRICATING OIL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Method used

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Examples

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Comparison scheme
Effect test

Embodiment 1

[0008] Example 1: A special lubricating oil for dual-fuel engines, including 50 parts of base oil, 1.5 parts of nonylphenol polyoxyethylene ether, 1 part of polyvinyl ether, 11 parts of poly-α-olefin, and 10 parts of high base synthetic calcium sulfonate Parts, 1 part of calcium alkylbenzene sulfonate, 1 part of thion butyl octyl zinc salt, 2 parts of salicylate with base value greater than 300mgKOH / g, 1 part of succinimide, dialkyl dithiophosphoric acid 2 parts of zinc, 1.5 parts of alkyl diphenylamine, 3 parts of ashless dispersant polyisobutylene succinimide.

Embodiment 2

[0009] Example 2: A special lubricating oil for dual-fuel engines, including 55 parts of base oil, 2 parts of nonylphenol polyoxyethylene ether, 3 parts of polyvinyl ether, 15 parts of poly-α-olefin, and high base number synthetic calcium sulfonate 12 Parts, 1.5 parts of calcium alkylbenzene sulfonate, 1.5 parts of thion butyl octyl zinc salt, 3 parts of salicylate with base value greater than 300mgKOH / g, 1.5 parts of succinimide, dialkyl dithiophosphoric acid 2.5 parts of zinc, 2 parts of alkyl diphenylamine, 4 parts of ashless dispersant polyisobutylene succinimide.

Embodiment 3

[0010] Example 3: A special lubricating oil for dual-fuel engines, including 58 parts of base oil, 3 parts of nonylphenol polyoxyethylene ether, 5 parts of polyvinyl ether, 17 parts of poly-α-olefin, and 18 parts of high base synthetic calcium sulfonate Parts, 2 parts of calcium alkylbenzene sulfonate, 2 parts of thion butyl octyl zinc salt, 4 parts of salicylate with base value greater than 300mgKOH / g, 2 parts of succinimide, dialkyl dithiophosphoric acid 3 parts of zinc, 1.8 parts of N-phenyl-a-zeylamine, 4.5 parts of ashless dispersant polyisobutylene succinimide.

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PUM

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Abstract

The invention relates to lubricating oil specially used for dual-fuel engines. The lubricating oil comprises the following components in parts by mass: 50-63 parts of base oil, 1.5-3.8 parts of nonylphenol polyoxyethylene ether, 1-7 parts of polyvinyl ether, 11-18 parts of poly(alpha-olefin), 10-20 parts of high base number synthetic calcium sulfonate, 1-3 parts of calcium alkylbenzene sulfonate, 1-3 parts of zinc butyl octyl thiophosphate, 2-5 parts of salicylate with base number being more than 300mgKOH / g, 1-3 parts of succinic phthalimide, 2-3.5 parts of zinc dialkyl dithiophosphate, 1.5-2.5 parts of organic amine and 3-5 parts of ashless dispersant polyisobutylene succinimide. The lubricating oil has the advantages that the selected raw materials have very strong compatibility reasonability, so that the lubricating oil specially used for dual-fuel engines has moderate ash content and has excellent oxidation resistance, high base number acidification resistance and abrasion resistance.

Description

Technical field [0001] The invention relates to a lubricating oil, in particular to a special lubricating oil for dual-fuel engines. Background technique [0002] The dual-fuel engine uses natural gas or liquefied petroleum gas as fuel, and its calorific value is very high. The exhaust temperature is as high as 480℃, which is 180℃-200℃ higher than the temperature of ordinary internal combustion engine oil. The engine combustion temperature is high, which causes the loss of lubricating oil evaporation. If the NOx content is too high, the internal combustion engine oil can easily oxidize or nitrate NOx, increase sludge and coke, thereby accelerating engine wear and lubricating oil deterioration and aging; and, compressed natural gas or liquefied petroleum gas itself has no lubricating effect, so , The ash content of the internal combustion engine oil is required to be moderate, so that the ash deposited on the valve and valve seat has a lubricating effect. If the ash content is too...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M167/00C10N30/10C10N30/06
Inventor 唐仕川宋世远张龙
Owner CHONGQING JIAZHOU LUBRICATING OIL
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