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A kind of low temperature resistance 5w-40 type liquefied natural gas automobile engine oil

A 5W-40, liquefied natural gas technology, applied in the petroleum industry, additives, lubricating compositions, etc., can solve the problem that liquefied natural gas engine oil cannot be used normally at lower temperatures

Inactive Publication Date: 2016-02-17
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problem to be solved by the present invention is to overcome the problem that the existing liquefied natural gas engine oil cannot be used normally at a lower temperature, and to provide a liquefied natural gas engine (5W-40) suitable for normal use in an environment of -30°C to 40°C special oil

Method used

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  • A kind of low temperature resistance 5w-40 type liquefied natural gas automobile engine oil
  • A kind of low temperature resistance 5w-40 type liquefied natural gas automobile engine oil
  • A kind of low temperature resistance 5w-40 type liquefied natural gas automobile engine oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Take the base oil 150SN50g used to prepare 5W-40 type liquefied natural gas automobile engine oil as an example, its mass composition is as follows:

[0016]

[0017]

[0018] The above-mentioned phosphobisoctyl basic zinc salt T203, low base value synthetic calcium sulfonate T104, dienyl succinimide T154, ethylene-propylene copolymer T613, and triphenyl thiophosphate T309 were all produced by Shanghai Demao Chemical Co., Ltd., and polyalphaolefin pour point depressant T803B was provided by Shenyang Great Wall Lubricating Oil Manufacturing Co., Ltd.

[0019] The preparation method of the 5W-40 type liquefied natural gas automobile engine oil in this example is as follows: add 50g of base oil 150SN and 50g of base oil 500N into a 250mL three-neck bottle, stir at a constant speed of 373 rpm until uniformly dispersed, and then add 3.0g of Phosphobisoctyl basic zinc salt T203, 1.2g low base value synthetic calcium sulfonate T104, 2.5g dienyl succinimide T154, 3.0g eth...

Embodiment 2

[0021] Take the base oil 150SN50g used to prepare 5W-40 type liquefied natural gas automobile engine oil as an example, its mass composition is as follows:

[0022]

[0023] Its preparation method is identical with embodiment 1.

Embodiment 3

[0025] Take the raw material base oil 150SN50g used to prepare 5W-40 type liquefied natural gas automobile engine oil as an example, its mass composition is as follows:

[0026]

[0027]

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

[0029] In order to determine the raw material proportioning of the present invention, the inventor has carried out a large amount of laboratory research experiments, and concrete experiment situation is as follows:

[0030] 1. Determine the amount of viscosity index improver added

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Abstract

The invention discloses low-temperature-resistant 5W-40 type liquefied natural gas vehicle engine oil which comprises the following components in parts by mass: 50 parts of base oil 150SN, 50 parts of base oil 500N, 2.0-4.0 parts of dioctyl thiophosphate alkaline zinc salt, 1.0-2.0 parts of low-alkali-value synthetic calcium sulfonate, 2.0-4.0 parts of diallyl succinimide, 2.0-4.0 parts of an ethylene-propylene copolymer T613, 0.3-0.5 part of triphenyl thiophosphate, 1.5-3.0 parts of poly-alpha-olefin pour point reducer T803B. The pour point, closed-cup flash point and 100 DEG C kinematic viscosity indexes of the low-temperature-resistant 5W-40 type liquefied natural gas vehicle engine oil meet performance indexes of 5W-40 type liquefied natural gas engine oil, and the low-temperature-resistant 5W-40 type liquefied natural gas vehicle engine oil can be normally used at a temperature between -30 DEG C and 40 DEG C.

Description

technical field [0001] The invention belongs to the technical field of lubricating oil for engines, and in particular relates to a special engine oil for liquefied natural gas automobile engines which is suitable for normal use (5W-40) in the environment of -30°C to 40°C. Background technique [0002] Liquefied natural gas, as a clean energy developed after the 1990s, is to liquefy natural gas to -180°C, and then use it as a burning material in vehicles. In addition, LNG also has significant advantages over traditional vehicle fuels in terms of safety, economy, dispersion, and high efficiency. [0003] In order for the engine to work normally, LNG engine oil must have the advantages of strong high temperature resistance, good wear resistance, and good cleaning and dispersibility. However, general liquefied natural gas engine oil cannot withstand the test of high temperature (40°C) and severe cold (-30°C) climate conditions in Xinjiang and other regions. Contents of the in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/04C10M167/00
Inventor 雷忠利孙千钧杨红
Owner SHAANXI NORMAL UNIV