Lubricating oil compound additive for compressed natural gas engine

A compound additive and compressed natural gas technology, applied in the field of lubricating oil, to achieve stable performance, improve dispersion, and reduce the rate of change of kinematic viscosity

Inactive Publication Date: 2015-03-25
陕西通用润滑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to solve the problems existing in the existing compressed natural gas engine oil according to the working characteristics of the bus gas engine lubricating oil, and provide it with a good cleaning and dispersibility, lubricating performance, wear resistance and Oxidation-resistant compressed natural gas engine lubricating oil compound additive

Method used

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  • Lubricating oil compound additive for compressed natural gas engine
  • Lubricating oil compound additive for compressed natural gas engine
  • Lubricating oil compound additive for compressed natural gas engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Taking the base oil 250N 100g used to prepare the compound additive for compressed natural gas engine lubricating oil as an example, its raw material composition and preparation method are as follows:

[0023]

[0024] The preparation method of the above-mentioned composite additive for compressed natural gas engine lubricating oil is: uniformly mixing sulfurized alkyl phenate calcium and high alkali value synthetic calcium sulfonate to obtain mixture A; boronated polyisobutylene succinimide, alkylated phenyl -α-naphthylamine, p-, p-'octyl diphenylamine, mixed uniformly to obtain mixture B; hindered phenolic antioxidant, molybdenum dialkyldithiocarbamate, and nano-copper particle anti-wear additives were uniformly mixed to obtain Mixture C: Pour the base oil into the blending kettle, heat to 55-60°C, then add thiadiazole polysulfide, mix well, then add mixtures A, B, and C in turn, and stir for 1 hour.

Embodiment 2

[0026]Taking the base oil 250N 100g used to prepare the compound additive for compressed natural gas engine lubricating oil as an example, its raw material composition and preparation method are as follows:

[0027]

[0028] Its preparation method is identical with embodiment 1.

Embodiment 3

[0030] Taking the base oil 250N 100g used to prepare the compound additive for compressed natural gas engine lubricating oil as an example, its raw material composition and preparation method are as follows:

[0031]

[0032] Its preparation method is identical with embodiment 1.

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Abstract

The invention discloses a lubricating oil compound additive for a compressed natural gas engine. The lubricating oil compound additive consists of the following components in parts by weight: 100 parts of base oil, 30-70 parts of sulfurized calcium alkyl phenate, 20-50 parts of high alkali value synthesized calcium sulfonate, 130-170 parts of borated polyisobutylene succinimide, 2-10 parts of alkylated phenyl-alpha-naphthylamine, 2-8 parts of p,p'-octyl diphenylamine, 5-15 parts of a hindered phenol-type antioxidant, 5-15 parts of molybdenum dialkyldithiocarbamate, 0.5-2 parts of a nano-copper particle antiwear additive, and 0.5-1.5 parts of thiadiazole polysulfide. The lubricating oil compound additive can be used for blending compressed natural gas engine oil of various quality grades, and can be particularly used for blending a special lubricating oil for a heavy-load compressed natural gas engine of a bus, the product blended by use of the lubricating oil compound additive is excellent in product performance, and has longer oil exchange period as well as relatively excellent lustration dispersivity, lubricating performance, abrasion resistance and oxidation resistance, and the additive dose is 6.0%-7.2%, and is lower than the average addition level of the industry.

Description

technical field [0001] The invention belongs to the technical field of lubricating oil, and in particular relates to a compound additive for lubricating oil of a compressed natural gas engine. Background technique [0002] For compressed natural gas vehicles using clean energy, especially urban public transport vehicles, they have the special operating characteristics of frequent starting and stopping, large load changes, and low average driving speed. Frequent starting keeps the engine in low-speed and high-torque operating conditions for a long time. The running time of the engine speed from idling to high speed and then down to low speed increases, the oil viscosity becomes lower under high temperature conditions, the friction and wear of the engine accelerates, and the heat load increases, which makes the engine prone to oxidation and sludge, oxidation resistance, cleaning and dispersibility Reduced oil change intervals. Therefore, bus engine oil must have better cleans...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M161/00C10N40/25C10N30/04C10N30/06C10N30/10
Inventor 王稳董元虎尹兴林杨超杨欣金瑞东
Owner 陕西通用润滑科技有限公司
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