A kind of low-viscosity high-efficiency energy-saving engine oil and its preparation process

An engine oil and energy-saving technology, applied in the petroleum industry, lubricating compositions, etc., can solve problems such as low friction coefficient and low viscosity, achieve moderate viscosity, increase viscosity index, and excellent synergistic energy-saving effect

Active Publication Date: 2019-05-10
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used antifriction agents, molybdenum disulfide and graphite colloidal dispersion, are easy to precipitate out of lubricating oil. Therefore, people focus on research on oil-soluble antifriction agents that can form stable solutions, and look for ideal coordination effects with specific antifriction agents. Energy-saving engine oil composition with low viscosity and low friction coefficient

Method used

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  • A kind of low-viscosity high-efficiency energy-saving engine oil and its preparation process
  • A kind of low-viscosity high-efficiency energy-saving engine oil and its preparation process
  • A kind of low-viscosity high-efficiency energy-saving engine oil and its preparation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The low-viscosity high-efficiency energy-saving engine oil described in this embodiment includes high-quality mineral oil (100°C kinematic viscosity 4.094mm) by weight percentage 2 / s, viscosity index 134) 77% (this ratio includes the base oil used to dissolve MoDTC), engine oil compounding agent 9%, viscosity index improver polymethyl methacrylate (PMA) 13.7% and pour point depressant 0.3% %. First, the molybdenum dialkyldithiocarbamate is dissolved in the base oil of 10% of the formulation amount at an addition amount of 0.075wt% based on the molybdenum component, and then the remaining base oil is added to other components (engine oil compounding agent, Viscosity index improver and pour point depressant) to make internal combustion engine oil, then add the dissolved MoDTC to the prepared internal combustion engine oil in an external way, and stir at 60°C for 1 hour in a heating reactor.

[0033] The engine oil compounding agent described in this embodiment is OLOA 555...

Embodiment 2

[0035] The low-viscosity high-efficiency energy-saving engine oil described in this embodiment includes high-quality mineral oil (100°C kinematic viscosity 4.173mm) by weight percentage 2 / s, viscosity index 127) 48% (this ratio includes the base oil used to dissolve MoDTC), synthetic oil (100 ° C kinematic viscosity 3.931mm 2 / s, viscosity index 122) 30%, engine oil compounding agent 9%, viscosity index improver polymethyl methacrylate (PMA) 12.7% and pour point depressant 0.3%. First, the molybdenum dialkyldithiocarbamate is dissolved in the base oil of 10% of the formulation amount at an addition amount of 0.075wt% based on the molybdenum component, and then the remaining base oil is added to other components (engine oil compounding agent, Viscosity index improver and pour point depressant) to make internal combustion engine oil, then add the dissolved MoDTC to the prepared internal combustion engine oil in an external way, and stir at 60°C for 1 hour in a heating reactor. ...

Embodiment 3

[0038] Compared with Example 1, the only difference is that in this example, the amount of each component in the internal combustion engine oil is: engine oil compounding agent 8.0%, viscosity index improver polymethyl methacrylate (PMA) 11.8%, Base oil 80.0% (this ratio includes the base oil used to dissolve MoDTC) and pour point depressant 0.2%, molybdenum dialkyldithiocarbamate is added to internal combustion engine oil in an external way, and the amount added is 0.05% based on molybdenum components wt%.

[0039] The engine oil compounding agent described in this embodiment is OLOA 55501SN / GF-5 engine oil compounding agent produced by Chevron; the pour point depressant is PAMA type pour point depressant produced by Yingchuang Degussa Company.

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Abstract

The invention discloses low-viscosity high-efficiency energy-efficient engine oil. The low-viscosity high-efficiency energy-efficient engine oil comprises the following components in parts by weight: 8.0-10.0 parts of an engine oil complexing agent, 10.0-15.0 parts of a viscosity index improver, 70.0-80.0 parts of a base oil, and 0.2-0.5 parts of a pour-point depressant. According to the invention, MoDTC is added in the internal combustion engine oil, by metering molybdenum component, 0.05 wt%-0.10wt% of MoDTC is added in the lubricating oil through external addition. The low-viscosity high-efficiency energy-efficient engine oil can satisfy API / ILSAC SN / GF-50W-20 specification requirement, and the technical problems of oil product viscosity-temperature performance and energy saving requirement of an OEM manufacturer can be solved by using a PMA-type viscosity index improver and a MoDTC strengthening agent through external addition. The low-viscosity high-efficiency energy-efficient engine oil can effectively reduce the lubricating oil friction coefficient, increases the fuel economy of an engine, has excellent low temperature performance, can effectively improve the antioxidation performance of an oil product, and reduces generation of a lubricating oil high temperature deposit.

Description

technical field [0001] The invention relates to an engine oil for an internal combustion engine, in particular to an energy-saving engine oil with low viscosity, high viscosity index and low friction coefficient and a preparation process thereof. Background technique [0002] With the development of automobile technology and the improvement of energy-saving and environmental protection requirements in various countries, the speed of engine oil replacement is very fast. At present, the proportion of high-grade lubricating oils such as SN and SM in the market has increased significantly, and various OEMs have upgraded their filling oils and after-sales oils. Many OEMs have also put forward energy-saving requirements for lubricating oils. It is difficult for products to meet these requirements. [0003] In recent decades, researchers have found that there are two main ways to improve the fuel economy of internal combustion engine oil: one is to properly reduce the viscosity of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/04C10N40/25
Inventor 许金山雷凌李万英朱和菊
Owner CHINA PETROLEUM & CHEM CORP
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