CN112725058B - Low-temperature-resistant diesel engine oil composition - Google Patents
Low-temperature-resistant diesel engine oil composition Download PDFInfo
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- CN112725058B CN112725058B CN201910974961.5A CN201910974961A CN112725058B CN 112725058 B CN112725058 B CN 112725058B CN 201910974961 A CN201910974961 A CN 201910974961A CN 112725058 B CN112725058 B CN 112725058B
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- 239000010710 diesel engine oil Substances 0.000 title claims abstract description 42
- 239000000203 mixture Substances 0.000 title claims abstract description 34
- 239000002199 base oil Substances 0.000 claims abstract description 29
- 230000000994 depressogenic effect Effects 0.000 claims abstract description 14
- 239000008139 complexing agent Substances 0.000 claims abstract description 10
- 229920000193 polymethacrylate Polymers 0.000 claims abstract description 5
- 239000010705 motor oil Substances 0.000 claims description 23
- -1 alkyl naphthalene Chemical compound 0.000 abstract description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N naphthalene-acid Natural products C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 abstract description 2
- 238000004458 analytical method Methods 0.000 description 7
- 230000006872 improvement Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000013538 functional additive Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M157/00—Lubricating compositions characterised by the additive being a mixture of two or more macromolecular compounds covered by more than one of the main groups C10M143/00 - C10M155/00, each of these compounds being essential
- C10M157/10—Lubricating compositions characterised by the additive being a mixture of two or more macromolecular compounds covered by more than one of the main groups C10M143/00 - C10M155/00, each of these compounds being essential at least one of them being a compound containing atoms of elements not provided for in groups C10M157/02 - C10M157/08
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/102—Aliphatic fractions
- C10M2203/1025—Aliphatic fractions used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/04—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing aromatic monomers, e.g. styrene
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Abstract
The invention relates to the technical field of diesel engine oil, in particular to a low-temperature-resistant diesel engine oil composition. The diesel engine oil composition provided by the invention comprises the following components in parts by weight: 50-80 parts of base oil, 10-15 parts of a diesel engine oil complexing agent, 10-20 parts of a viscosity index improver and 0.1-0.5 part of a pour point depressant; the viscosity index improver is an HSD type viscosity index improver; the pour point depressant comprises alkyl naphthalene and/or polymethacrylate. The diesel engine oil composition can meet the specification requirements of CH-40W-30 and CF-40W-40, has excellent low-temperature resistance, can ensure the normal operation of a diesel engine in a low-temperature environment, and is particularly suitable for the diesel engine in alpine regions and cold seasons.
Description
Technical Field
The invention relates to the technical field of diesel engine oil, in particular to a low-temperature-resistant diesel engine oil composition.
Background
The engine oil plays roles of lubrication, antifriction, cooling, noise reduction, vibration reduction, cleaning, sealing, rust prevention, corrosion prevention and the like in the using process of the engine. The engine works under the harsh conditions of high thermal load and high mechanical load, so the engine oil has good lubricity, good oxidation stability, good wear resistance and friction reduction, good corrosion resistance and rust resistance, good viscosity-temperature property, good low-temperature fluidity, good pumpability, cleaning dispersibility and the like.
In order to ensure the lubricating effect of the engine, the engine oil needs to have proper viscosity and good viscosity-temperature characteristics, so that the viscosity is slightly influenced by temperature change. The excessive viscosity of the lubricating oil can increase the motion resistance between friction pairs, the low-temperature starting is difficult, the mechanical efficiency is reduced, and the fuel consumption is increased. And the viscosity is too low, a tough oil film cannot be formed between the friction pairs, the antifriction effect is poor, and the abrasion of the engine is increased. Diesel engines are often required to operate under high load for a long period of time in low-temperature environments such as cold regions and cold seasons, and therefore the low-temperature resistance of engine oil is highly required. And the requirement of current environmental protection laws and regulations on engine oil is stricter, and high-quality low-sulfur, low-phosphorus and low-ash engine oil is widely popularized. Therefore, there is a high necessity to develop a diesel engine oil having excellent low temperature resistance that meets strict environmental standards.
Disclosure of Invention
The invention aims to provide a diesel engine oil composition with excellent low-temperature resistance.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the invention provides a low-temperature-resistant diesel engine oil composition which comprises the following components in parts by weight: 50-80 parts of base oil, 10-15 parts of a diesel engine oil complexing agent, 10-20 parts of a viscosity index improver and 0.1-0.5 part of a pour point depressant; wherein the viscosity index improver is an HSD type viscosity index improver; the pour point depressant comprises alkyl naphthalene and/or polymethacrylate. The low-temperature resistance of the diesel engine oil can be better ensured by adopting the compounding mode of the viscosity index improver and the pour point depressant.
The HSD type viscosity index improver is preferably dissolved using a group III base oil.
As a self-service hairIn one of the parallel technical solutions, the diesel engine oil composition meets CH-4 specification requirements, including a viscosity grade of 0W-30, the viscosity range being: 9.3<The viscosity is less than or equal to 12.5mm 2 /s。
As a second parallel technical scheme of the invention, the engine oil composition meets the CF-4 specification requirement, and comprises a viscosity grade of 0W-40, wherein the viscosity range is as follows: 12.5<Viscosity is less than or equal to 16.3mm 2 /s。
In order to further promote the improvement of the low-temperature resistance of the diesel engine oil, the mass ratio of the viscosity index improver to the pour point depressant in the diesel engine oil composition is preferably (20-200): 1. More preferably (20-60): 1.
Preferably, the pour point depressant is a polymethacrylate pour point depressant.
More preferably, the pour point depressant is Vx 1-248; the HSD type viscosity index improver is VII-260.
In order to be better matched with the functional additive, the invention further improves the coordination effect of each component by optimizing the base oil. The base oil is preferably a mixture of a group V base oil and a group IV base oil or a mixture of a group IV base oil and a group III base oil.
Preferably, in the base oil, the mass ratio of the group IV base oil to the group V base oil or the group III base oil is (2-5): 1.
In the invention, the diesel engine oil complexing agent preferably meets the quality requirement of CH-4 or CF-4. More preferably, it is Lz4980A, or a mixture of Lz4980A and Lz 8680A.
As a preferable scheme, the invention provides a CH-40W-30 diesel engine oil composition which comprises the following components in parts by weight:
as another preferred scheme, the invention provides a CF-40W-40 diesel engine oil composition, which comprises the following components in parts by weight:
the invention also provides a preparation method of the diesel engine oil composition, which comprises the following steps: and mixing the base oil, the diesel engine oil complexing agent, the viscosity index improver and the pour point depressant in proportion.
The invention has the beneficial effects that:
the diesel engine oil composition provided by the invention can meet the specification requirements of CH-40W-30 and CF-40W-40, passes various low-temperature performance tests, has excellent low-temperature resistance, can ensure the normal operation of a diesel engine in a natural environment below-40 ℃, provides good low-temperature lubricity for the engine, and is particularly suitable for the diesel engine in alpine regions and in cold seasons.
Drawings
FIG. 1 is a pour point tester as a refrigeration environment in Experimental example 1 of the present invention.
FIG. 2 is a graph showing the flow of the CH-40W-30 engine oil of example 1 and the CF-40W-40 engine oil of example 3 in the pour point tester-40 ℃ environment for 48 hours in accordance with the present invention; the CH-40W-30 engine oil of example 1, the reference oil, and the CF-40W-40 of example 3 were sequentially arranged from left to right.
FIG. 3 is a drawing of CH-40W-30 engine oil of example 1 and CF-40W-40 engine oil of example 3 in the pour point tester-40 ℃ environment for 48 hours according to the present invention; the CH-40W-30 engine oil of example 1, the reference oil, and the CF-40W-40 engine oil of example 3 were sequentially provided from left to right.
Detailed Description
Preferred embodiments of the present invention will be described in detail with reference to the following examples. It is to be understood that the following examples are given for illustrative purposes only and are not intended to limit the scope of the present invention. Various modifications and alterations of this invention will become apparent to those skilled in the art without departing from the spirit and scope of this invention.
The experimental procedures used in the following examples are all conventional procedures unless otherwise specified.
Materials, reagents and the like used in the following examples are commercially available, unless otherwise specified, wherein base oils are available from petrochemical group of China.
Example 1
The embodiment provides a low-temperature-resistant CH-40W-30 diesel engine oil composition which comprises the following components in percentage by weight:
example 2
The embodiment provides a low-temperature-resistant CH-40W-30 diesel engine oil composition which comprises the following components in percentage by weight:
example 3
The embodiment provides a low-temperature-resistant CF-40W-40 diesel engine oil composition which comprises the following components in percentage by weight:
example 4
The embodiment provides a low-temperature-resistant CF-40W-40 diesel engine oil composition which comprises the following components in percentage by weight:
experimental example 1 Performance test of Engine oil
The performance of each of the diesel engine oil compositions of examples 1 to 4 was analyzed, and the analysis items, the analysis methods, and the analysis results of the diesel engine oil compositions of examples 1 and 3 are shown in table 1. Fig. 1 shows a pour point tester as a refrigeration environment for detecting a pour point. The CH-40W-30 engine oil of example 1 and the CF-40W-40 engine oil of example 3 were allowed to flow after being left at a pour point tester-40 ℃ for 48 hours in an environment of FIG. 2, and the results showed that the CH-40W-30 engine oil of example 1 and the CF-40W-40 engine oil of example 3 had good fluidity under low temperature conditions and excellent low temperature resistance. The stringiness of the CH-40W-30 engine oil of example 1 and the CF-40W-40 engine oil of example 3 after being left for 48 hours in a pour point tester environment at-40 ℃ are shown in FIG. 3.
TABLE 1 analysis of properties of diesel engine oils
Further, engine mount tests were performed on the diesel engine oil compositions of examples 1 to 4, and the analysis items, the analysis methods, and the analysis results of the diesel engine oil composition of example 1 are shown in table 2.
TABLE 2 Engine bench test results for Diesel Engine oils
Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (3)
1. The low-temperature-resistant diesel engine oil composition is characterized by comprising the following components in parts by weight: 50-80 parts of base oil, 10-15 parts of a diesel engine oil complexing agent, 10-20 parts of an HSD type viscosity index improver VII-26010, and 0.5 part of a pour point depressant Vx 1-2480.1;
wherein the mass ratio of the viscosity index improver to the pour point depressant is (20-60): 1;
the base oil is a mixture of group V base oil and group IV base oil, or a mixture of group IV base oil and group III base oil;
in the base oil, the mass ratio of the IV base oil to the V base oil or the III base oil is (2-5): 1;
the diesel engine oil complexing agent meets the quality requirement of CH-4 or CF-4 and is Lz4980A or a mixture of Lz4980A and Lz 8680A;
the engine oil composition meets CH-4 specification requirements, including a viscosity grade of 0W-30, and the viscosity range is as follows: 9.3<Viscosity is less than or equal to 12.5mm 2 S; alternatively, the engine oil composition meets the CF-4 specification requirements, including a viscosity grade of 0W-40, the viscosity range being: 12.5<Viscosity is less than or equal to 16.3mm 2 /s。
2. The CH-40W-30 diesel engine oil composition is characterized by comprising the following components in parts by weight:
20-40 parts of III base oil;
40-50 parts of IV base oil;
13-15 parts of a diesel engine oil complexing agent Lz4980A 13;
0-2 parts of a diesel engine oil complexing agent Lz8680A 0;
10-15 parts of HSD type viscosity index improver;
0.2-0.4 part of polymethacrylate pour point depressant.
3. The CF-40W-40 diesel engine oil composition is characterized by comprising the following components in parts by weight:
40-60 parts of IV base oil;
10-20 parts of V base oil;
13-15 parts of a diesel engine oil complexing agent Lz4980A 13;
0-2 parts of a diesel engine oil complexing agent Lz8680A 0;
10-20 parts of HSD type viscosity index improver;
0.3-0.5 part of polymethacrylate pour point depressant.
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| CN201910974961.5A CN112725058B (en) | 2019-10-14 | 2019-10-14 | Low-temperature-resistant diesel engine oil composition |
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| CN201910974961.5A CN112725058B (en) | 2019-10-14 | 2019-10-14 | Low-temperature-resistant diesel engine oil composition |
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| CN115678646A (en) * | 2022-08-05 | 2023-02-03 | 黎光泰富(苏州)科技有限公司 | Diesel engine oil with ultralow-temperature starting performance |
| CN115975707B (en) * | 2022-11-25 | 2024-07-05 | 山东京博新能源控股发展有限公司 | Special oil for ultralow-temperature plateau alpine engine |
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| CN103146463A (en) * | 2012-12-07 | 2013-06-12 | 杨敏 | Ultra-low temperature fully synthetic engine oil |
| CN106318538A (en) * | 2015-06-17 | 2017-01-11 | 上海福岛化工科技发展有限公司 | Long-acting diesel engine lubricating oil composition |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103146463A (en) * | 2012-12-07 | 2013-06-12 | 杨敏 | Ultra-low temperature fully synthetic engine oil |
| CN106318538A (en) * | 2015-06-17 | 2017-01-11 | 上海福岛化工科技发展有限公司 | Long-acting diesel engine lubricating oil composition |
| CN106398831A (en) * | 2016-08-31 | 2017-02-15 | 龙蟠润滑新材料（天津）有限公司 | Anti-wear energy-saving type diesel engine oil composition |
| CN108085091A (en) * | 2017-12-08 | 2018-05-29 | 锦州新兴石油添加剂有限责任公司 | The economical staged general purpose engine oil complexing agent of high-performance CI-4, CH-4 and CF-4 and its application |
Non-Patent Citations (1)
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