CN110016380B - Diesel engine oil composition - Google Patents
Diesel engine oil composition Download PDFInfo
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- CN110016380B CN110016380B CN201810015292.4A CN201810015292A CN110016380B CN 110016380 B CN110016380 B CN 110016380B CN 201810015292 A CN201810015292 A CN 201810015292A CN 110016380 B CN110016380 B CN 110016380B
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- 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
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- C10M2207/14—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings
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- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
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- C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
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- C10M2219/06—Thio-acids; Thiocyanates; Derivatives thereof
- C10M2219/062—Thio-acids; Thiocyanates; Derivatives thereof having carbon-to-sulfur double bonds
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- C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
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- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/25—Internal-combustion engines
- C10N2040/252—Diesel engines
Abstract
The invention discloses an energy-saving diesel engine oil composition. The lubricating oil composition comprises a proper amount of metal detergent, ashless dispersant, antioxidant corrosion inhibitor, compound antioxidant, compound antifriction agent, viscosity index improver, pour point depressant and the balance of base oil. The energy-saving diesel engine oil has the advantages of low friction coefficient, low high-temperature high-shear viscosity, good wear-resistant and energy-saving effects, simple formula, low cost and convenient preparation.
Description
Technical Field
The invention relates to the technical field of lubricating oil products, in particular to an energy-saving diesel engine oil composition.
Background
With the attention of people on environmental protection and the stricter environmental protection regulations, diesel engines begin to step into the energy-saving and emission-reducing stage. At present, the fuel consumption limit of the heavy commercial vehicle (the third stage, the solicitation of comments) drafted by the research center of automobile technology in China has been completed, and the total energy-saving target is determined to be 'the fuel consumption limit is increased by about 15% on the basis of 2015 in 2020'. If the third-stage standard is implemented, the method has important significance on environmental protection, energy conservation and emission reduction and development of the commercial vehicle industry in China.
Energy conservation and emission reduction of diesel engines can be realized by 3 main ways: (1) energy conservation and emission reduction are realized by improving the design of the engine; (2) energy conservation and emission reduction are realized by improving the fuel quality; (3) energy conservation and emission reduction are realized through a lubricating technology. The technical cost for realizing energy conservation and emission reduction by adopting the lubricating means is low, the method is easy to realize, and especially the energy-saving engine oil which is strictly demonstrated is one of attractive oil-saving means.
The energy-saving engine oil requires that the oil product can keep the optimal viscosity under various conditions (temperature, stress and shearing force) and has excellent wear resistance during boundary lubrication. Specifically, the energy-saving engine oil is characterized in that: (1) low viscosity of oil (namely, the oil has low viscosity and low high-temperature high-shear viscosity); (2) high viscosity index of the oil (multigrade oil); (3) the antifriction performance of the oil product is optimized. With the implementation of the national discharge standard V of the diesel engine, energy conservation and environmental protection are the main characteristics of diesel engine oil development.
Patent CN105542922 reports an energy-saving diesel engine oil with ultra-long oil change mileage and a preparation method thereof, the energy-saving diesel engine oil is prepared by adding an anti-wear agent and an antioxidant into a Yafuton complex agent, and the anti-wear agent is molybdenum carbamate. Patent CN104059736 reports an antiwear energy-saving environment-friendly diesel engine oil, which improves the antiwear performance of oil products by adding polyhexafluoroethylene micropowder into the oil products. Patent CN105820861 introduces an energy-saving diesel engine oil and a preparation method thereof, and an antiwear agent adopts molybdenum carbamate. Patent CN104232269 introduces a molybdenum-containing internal combustion engine oil, its preparation method and application, in the formula of which indolonaphthidine structural unit, disulfide and molybdenum carbamate are used, and the oil has better antiwear property. Patent CN104745278 introduces an environment-friendly energy-saving diesel engine oil and a preparation method thereof, and nanometer boron and nanometer molybdenum are adopted as friction modifiers.
Patent US20140194333 describes a process for the preparation of lubricating oil formulations for improving fuel economy, which is characterized by the addition of alkoxy alcohols. Patent US20120028862 reports a low viscosity diesel engine oil lubricating oil composition for improving fuel economy.
The SRV friction wear tester and the MTM micro-traction tester are common test instruments for evaluating the energy-saving effect of lubricating oil. The energy-saving performance of the oil product is evaluated by the SRV method in the patent US20160108336, and the fuel economy of the oil product is evaluated by the MTM method in the patent US 20140194333.
CN102277225A discloses an engine lubricating oil composition, belonging to the technical field of lubricating oil. The paint mainly comprises the following components in percentage by weight: hydrotreating a base oil; 1.5-3.0% of high-base-number sulfurized calcium alkyl phenolate; 4.5-6.5% of boronized polyisobutenyl succinimide ashless dispersant; 1.0-2.5% of high and low base number calcium sulfonate detergent; 0.5 to 1.5% of zinc dialkyldithiophosphate; 0.3-0.6% of amine type auxiliary antioxidant; 0.3-0.6% of nitrogen-containing molybdenum thiophosphate; 0.3-0.6% of phenol antioxidant.
Compared with the prior art, the organic molybdenum is gradually decomposed in the using process of the oil product, so that the energy-saving effect of the oil product is reduced, and the organic molybdenum is compounded with the organic amine, so that after the organic molybdenum is decomposed, the organic amine continuously plays a role in reducing friction and saving energy, and the energy-saving and long-acting performance of the oil product is ensured. The organic amine in the invention is oleylamine or oleylamide, which is the result obtained by a comparative test with various organic amines. The invention selects the base oil with low high-temperature high-shear viscosity, so that the energy-saving performance of the oil product is more excellent. The invention simultaneously uses the low friction technology and the low high-temperature high-shear viscosity synergistic effect, so that the energy-saving performance of the oil product is more excellent. The creativity of a formula system, the salicylate system with good high-temperature detergency and the composite friction reducer are selected to cooperate, so that the energy-saving oil product has a good long-acting energy-saving effect.
Disclosure of Invention
The invention aims to provide an energy-saving lubricating oil composition for a diesel engine.
The invention provides a diesel engine oil composition, which comprises the following components: based on the total weight of the composition,
(A) 0.5-7.0% of metal detergent;
(B) an ashless dispersant, the content of which is 1.0-10.0%;
(C) 0.3 to 3.0 percent of antioxidant corrosion inhibitor;
(D) the content of the composite antioxidant is 0.1-2.0%;
(E) the content of the composite friction reducer is 0.1-2.0%;
(F) the viscosity index improver accounts for 1.0-15.0%;
(G) 0.1 to 2.0 percent of pour point depressant;
(H) the content of the base oil is 70.0-92.0%.
The diesel engine oil composition of the present invention, wherein the component (a) is preferably any two or three of alkyl salicylate, sulfonate and sulfurized alkyl phenate.
The diesel engine oil composition of the present invention, wherein the alkyl salicylate is preferably an alkyl salicylate having a structure of:
wherein R is preferably alkyl containing 10-20 carbon atoms, M is preferably Ca or Mg, and M and n are preferably positive integers which are not zero.
The diesel engine oil composition of the present invention is preferably one wherein the structure of the sulfurized alkylphenate is:
wherein R is preferably alkyl containing 10-24 carbon atoms, M is preferably Ca or Mg, and M, n and x are preferably positive integers not zero.
The diesel engine oil composition of the present invention, wherein the structure of the sulfonate is preferably:
wherein R is preferably alkyl containing 14-28 carbon atoms, M is preferably Ca or Mg, and M and n are preferably positive integers not zero.
The diesel engine oil composition of the present invention, wherein the component (B) is preferably a polyisobutylene succinimide dispersant.
The diesel engine oil composition of the present invention, wherein the polyisobutylene succinimide preferably has a structure of:
in the formula, PIB is polyisobutylene preferably, molecules are 900-2500 preferably, and n is a positive integer which is not zero preferably.
The diesel engine oil composition of the present invention, wherein the component (C) is preferably a zinc dialkyldithiophosphate antioxidant corrosion inhibitor.
The diesel engine oil composition of the present invention, wherein the zinc dialkyldithiophosphate preferably has a structural formula of:
wherein R is CnH2n+1，n＝3～10。
The diesel engine oil composition is characterized in that the component (D) is preferably compounded by a phenolic antioxidant and an amine antioxidant, wherein the phenolic antioxidant comprises the following components in percentage by mass: the amine-type antioxidant is preferably 2: 1;
wherein the phenolic antioxidant is preferably 3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate, and the amine antioxidant is preferably alkyl diphenylamine.
The diesel engine oil composition of the invention, wherein the component (E) is preferably a mixture of organic molybdenum and organic amine, and the mass ratio of the organic molybdenum: the organic amine is 2: 1;
wherein the organic molybdenum is preferably molybdenum dialkyldithiophosphate, molybdenum dialkyldithiocarbamate or a molybdenum amine complex, and the organic amine is preferably oleylamine or oleylamide.
The diesel engine oil composition of the present invention, wherein the component (F) is preferably an ethylene-propylene copolymer or polymethacrylate.
The diesel engine oil composition of the present invention, wherein the component (G) is preferably polyalphaolefin or polymethacrylate.
The diesel engine oil composition of the present invention, wherein the component (H) preferably has a low high-temperature high-shear viscosity.
The invention can also be detailed as follows:
the invention provides an energy-saving diesel engine lubricating oil composition, which comprises the following components by taking the total weight of the composition as a reference:
(A) 0.5-7.0% of metal detergent; (B) an ashless dispersant, the content of which is 1.0-10.0%; (C) 0.3 to 3.0 percent of antioxidant corrosion inhibitor; (D) the content of the composite antioxidant is 0.1-2.0%; (E) the content of the composite friction reducer is 0.1-2.0%; (F) the viscosity index improver accounts for 1.0-15.0%; (G) 0.1 to 2.0 percent of pour point depressant; (H) the content of the base oil is 70.0-92.0%.
The component (A) metal detergent can be alkyl salicylate or sulfurized alkyl phenate or sulfonate or a mixture of any two of the alkyl salicylate and the sulfurized alkyl phenate or sulfonate or a mixture of the alkyl salicylate and the sulfurized alkyl phenate and the sulfonate;
the alkyl salicylate has the structure:
wherein R is an alkyl group having 10 to 20 carbon atoms, M is Ca or Mg, and M and n are positive integers other than zero.
The sulfurized alkylphenate has the structure:
wherein R is alkyl containing 10-24 carbon atoms, M is Ca or Mg, and M, n and x are non-zero positive integers.
The sulfonate has the structure:
wherein R is an alkyl group having 14 to 28 carbon atoms, M is Ca or Mg, and M and n are positive integers other than zero.
The ashless dispersant of the component (B) is polyisobutylene succinimide;
the polyisobutylene succinimide has the structure:
in the formula, PIB is polyisobutylene, the molecule is 900-2500, and n is a positive integer which is not zero.
The component (C) antioxidant corrosion inhibitor is zinc dialkyl dithiophosphate;
the zinc dialkyldithiophosphate has the structural formula:
wherein R is CnH2n+1，n＝3～10。
The composite antioxidant of the component (D) is a mixture of a phenolic antioxidant and an amine antioxidant, and the phenolic antioxidant comprises the following components in percentage by mass: the amine antioxidant is 2: 1. wherein the phenolic antioxidant is 3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate, and the amine antioxidant is: an alkyl diphenylamine.
The composite friction reducer of the component (E) is a mixture of organic molybdenum and organic amine, and the mass ratio of the organic molybdenum: the organic amine is 2: 1. Wherein the organic molybdenum is dialkyl molybdenum dithiophosphate, dialkyl molybdenum dithiocarbamate or molybdenum amine complex. The organic amine is oleylamine or oleylamide.
The viscosity index improver of the component (F) is ethylene propylene copolymer or polymethacrylate;
the pour point depressant of the component (G) is poly alpha-olefin or polymethacrylate;
the component (H) base oil is hydrogenated base oil having a low high-temperature high-shear viscosity;
the component (A) accounts for 0.5-7.0% of the total weight of the composition, and the preferable suitable range is 2.0-6.0%.
The component (B) accounts for 1.0-10.0% of the total weight of the composition, and the preferable suitable range is 2.0-9.0%.
The component (C) accounts for 0.3-3.0% of the total weight of the composition, and the preferable suitable range is 0.5-2.5%.
The component (D) accounts for 0.1-2.0% of the total weight of the composition, and the preferable suitable range is 0.2-1.8%.
The component (E) accounts for 0.1-2.0% of the total weight of the composition, and the preferable suitable range is 0.3-1.5%.
The component (F) accounts for 1.0-15.0% of the total weight of the composition, and the preferable suitable range is 2.0-12.0%.
The component (G) accounts for 0.1-2.0% of the total weight of the composition, and the preferable suitable range is 0.2-1.0%.
Wherein the component (H) accounts for 70.0-92.0% of the total weight of the composition, and the preferable suitable range is 72.0-88.0%.
The invention utilizes the well-known principle of interaction between the additive components to strive to make each functional additive exert its own performance advantages and make each functional additive component generate stronger 'synergistic effect' as far as possible. In particular, the composite friction reducer is used, so that the composition has a low friction coefficient, and the energy-saving effect of the oil product is optimal.
The invention adopts the methods of an SRV test method, an MTM test method, a wear-spot diameter test, a high-temperature high-shear viscosity test and the like to inspect the energy-saving performance and the wear resistance of the oil product.
When preparing oil products, A, B, C, D, E, F, G, H components are added at one time and fully stirred for at least 2 hours until the composition is uniformly mixed, and the energy-saving diesel engine oil product can be obtained.
The invention has the beneficial effects that:
1; the organic molybdenum is gradually decomposed in the using process of the oil product, so that the energy-saving effect of the oil product is reduced, and the organic molybdenum is selected to be compounded with the organic amine, so that after the organic molybdenum is decomposed, the organic amine continuously plays a role in reducing friction and saving energy, and the energy-saving and long-acting performance of the oil product is ensured.
2: the organic amine in the invention is oleylamine or oleylamide, which is the result obtained by a comparative test with various organic amines.
3, the base oil with low high-temperature high-shear viscosity is selected, so that the energy-saving performance of the oil product is more excellent.
4: the invention simultaneously uses the low friction technology and the low high-temperature high-shear viscosity synergistic effect, so that the energy-saving performance of the oil product is more excellent.
5: the creativity of a formula system, the salicylate system with good high-temperature detergency and the composite friction reducer are selected to cooperate, so that the energy-saving oil product has a good long-acting energy-saving effect.
Drawings
FIG. 1 shows the results of an energy-saving oil SRV test;
the test oil is examined on an SRV4 type friction wear tester for energy-saving performance, wherein reference oil 1(15W-40 CI-4) is diesel engine oil of a foreign known brand, reference oil 2(15W-40 CI-4) is diesel engine oil of another foreign known brand, and the reference oil are both commercially available products. The SRV test method was performed according to Q/SY 1495.
FIG. 2 shows MTM test results of energy-saving oils;
the energy-saving performance of the test oil is examined on an MTM2 micro-traction tester, and the test method is carried out according to Q/SY RH 4044-.
Detailed Description
The following examples illustrate the invention in detail: the present example is carried out on the premise of the technical scheme of the present invention, and detailed embodiments and processes are given, but the scope of the present invention is not limited to the following examples, and the experimental methods without specific conditions noted in the following examples are generally performed according to conventional conditions.
Example 1
The energy-saving diesel engine oil composition comprises the following raw materials in parts by mass:
example 2
The energy-saving diesel engine oil composition comprises the following raw materials in parts by mass:
example 3
The energy-saving diesel engine oil composition comprises the following raw materials in parts by mass:
example 4
For the energy-saving performance examination of the oil product, the reference sample and the examples 1, 2 and 3 are examined on an SRV4 type friction wear tester for friction coefficients at different temperatures. A temperature versus friction coefficient plot was made at the end of the test, as shown in figure 1,
as can be seen from FIG. 1, the energy-saving diesel engine oil of the present invention has a low friction coefficient, which indicates that the oil product has a good energy-saving performance.
Example 5
In the example, the energy-saving performance of the oil product is inspected, the reference sample and the examples 1, 2 and 3 are inspected on an MTM2 micro-traction tester, and the test result is shown in figure 2.
As can be seen from FIG. 2, the energy-saving oils of examples 1, 2 and 3 of the present invention enter the fluid lubrication state more easily with the increase of the test speed, and exhibit very good antifriction and energy-saving properties.
Example 6
This example is the scrub diameter test of an oil.
Table 1 shows the four ball wear diameter test results for several oils.
As can be seen from the test results in Table 1, the energy-saving oil product of the present invention has very good antiwear properties.
Example 7
This example is the high temperature high shear viscosity test of an oil.
Table 2 shows the results of the high temperature high shear viscosity test for several oils.
As can be seen from the test results in Table 2, the energy-saving oil product of the present invention has a low high-temperature high-shear viscosity, indicating that it has a very good energy-saving performance.
Claims (11)
1. A diesel engine oil composition comprising the following components: based on the total weight of the composition,
(A) 0.5-7.0% of metal detergent;
(B) an ashless dispersant, the content of which is 1.0-10.0%;
(C) 0.3 to 3.0 percent of antioxidant corrosion inhibitor;
(D) the content of the composite antioxidant is 0.1-2.0%;
(E) the content of the composite friction reducer is 0.1-2.0%;
(F) the viscosity index improver accounts for 1.0-15.0%;
(G) 0.1 to 2.0 percent of pour point depressant;
(H) 70.0-92.0% of base oil;
the component (E) is a mixture of organic molybdenum and organic amine, and the mass ratio of the organic molybdenum: the organic amine is 2:1, the organic molybdenum is molybdenum dialkyl dithiophosphate, molybdenum dialkyl dithiocarbamate or molybdenum amine complex, and the organic amine is oleylamine or oleylamide;
the component (F) is an ethylene-propylene copolymer or polymethacrylate.
2. The diesel oil composition of claim 1, wherein the component (a) is a mixture of any two or three of an alkyl salicylate, a sulfonate, and a sulfurized alkyl phenate.
3. The diesel oil composition of claim 2, wherein the alkyl salicylate is of the structure:
wherein R is an alkyl group having 10 to 20 carbon atoms, M is Ca or Mg, and M and n are positive integers other than zero.
4. The diesel engine oil composition of claim 2, wherein the sulfurized alkylphenate has the structure:
wherein R is alkyl containing 10-24 carbon atoms, M is Ca or Mg, and M, n and x are non-zero positive integers.
5. The diesel oil composition of claim 2, wherein the sulfonate salt has the structure:
wherein R is an alkyl group having 14 to 28 carbon atoms, M is Ca or Mg, and M and n are positive integers other than zero.
6. The diesel oil composition of claim 1, wherein the component (B) is a polyisobutylene succinimide-based dispersant.
7. The diesel engine oil composition of claim 6, wherein the polyisobutylene succinimide is of the structure:
in the formula, PIB is polyisobutylene, the molecule is 900-2500, and n is a positive integer which is not zero.
8. The diesel oil composition of claim 1, wherein component (C) is a zinc dialkyldithiophosphate antioxidant corrosion inhibitor.
9. The diesel engine oil composition of claim 8, wherein the zinc dialkyldithiophosphate is of the formula:
wherein R is CnH2n+1，n＝3～10。
10. The diesel engine oil composition as claimed in claim 1, wherein the component (D) is a mixture of a phenolic antioxidant and an amine antioxidant, and the mass ratio of the phenolic antioxidant: the amine antioxidant is 2: 1;
wherein the phenolic antioxidant is 3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate, and the amine antioxidant is alkyl diphenylamine.
11. The diesel oil composition of claim 1, wherein the component (G) is a polyalphaolefin or a polymethacrylate.
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