CN117625293A - Diesel engine oil - Google Patents
Diesel engine oil Download PDFInfo
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- CN117625293A CN117625293A CN202311479868.XA CN202311479868A CN117625293A CN 117625293 A CN117625293 A CN 117625293A CN 202311479868 A CN202311479868 A CN 202311479868A CN 117625293 A CN117625293 A CN 117625293A
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- engine oil
- diesel engine
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- oil
- antioxidant
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- 239000010710 diesel engine oil Substances 0.000 title claims abstract description 59
- 239000003921 oil Substances 0.000 claims abstract description 41
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 38
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 37
- KXDAEFPNCMNJSK-UHFFFAOYSA-N Benzamide Chemical compound NC(=O)C1=CC=CC=C1 KXDAEFPNCMNJSK-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 24
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 claims abstract description 22
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000003599 detergent Substances 0.000 claims abstract description 16
- 239000002270 dispersing agent Substances 0.000 claims abstract description 15
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000011701 zinc Substances 0.000 claims abstract description 14
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 14
- 229920000728 polyester Polymers 0.000 claims abstract description 12
- 230000000994 depressogenic effect Effects 0.000 claims abstract description 11
- IJZPACDOFYWLKH-UHFFFAOYSA-N sulfinyltungsten Chemical compound O=S=[W] IJZPACDOFYWLKH-UHFFFAOYSA-N 0.000 claims abstract description 10
- 125000005266 diarylamine group Chemical group 0.000 claims abstract description 9
- 239000012188 paraffin wax Substances 0.000 claims abstract description 8
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 5
- VXXOYZOZDIQRPL-UHFFFAOYSA-N n,n-diphenylthiohydroxylamine Chemical compound C=1C=CC=CC=1N(S)C1=CC=CC=C1 VXXOYZOZDIQRPL-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229920002367 Polyisobutene Polymers 0.000 claims description 13
- MQHWFIOJQSCFNM-UHFFFAOYSA-L Magnesium salicylate Chemical group [Mg+2].OC1=CC=CC=C1C([O-])=O.OC1=CC=CC=C1C([O-])=O MQHWFIOJQSCFNM-UHFFFAOYSA-L 0.000 claims description 11
- AVVIDTZRJBSXML-UHFFFAOYSA-L calcium;2-carboxyphenolate;dihydrate Chemical compound O.O.[Ca+2].OC1=CC=CC=C1C([O-])=O.OC1=CC=CC=C1C([O-])=O AVVIDTZRJBSXML-UHFFFAOYSA-L 0.000 claims description 11
- 229940072082 magnesium salicylate Drugs 0.000 claims description 11
- NAGJZTKCGNOGPW-UHFFFAOYSA-N dithiophosphoric acid Chemical compound OP(O)(S)=S NAGJZTKCGNOGPW-UHFFFAOYSA-N 0.000 claims description 5
- NZIDBRBFGPQCRY-UHFFFAOYSA-N octyl 2-methylprop-2-enoate Chemical compound CCCCCCCCOC(=O)C(C)=C NZIDBRBFGPQCRY-UHFFFAOYSA-N 0.000 claims description 4
- -1 polydimethylsiloxane Polymers 0.000 claims description 4
- 229920000193 polymethacrylate Polymers 0.000 claims description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical group [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 2
- DKVNPHBNOWQYFE-UHFFFAOYSA-N carbamodithioic acid Chemical compound NC(S)=S DKVNPHBNOWQYFE-UHFFFAOYSA-N 0.000 claims description 2
- 239000012990 dithiocarbamate Substances 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 239000011733 molybdenum Substances 0.000 claims description 2
- 239000004205 dimethyl polysiloxane Substances 0.000 claims 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 11
- 230000003647 oxidation Effects 0.000 abstract description 10
- 238000007254 oxidation reaction Methods 0.000 abstract description 10
- 238000004140 cleaning Methods 0.000 abstract description 4
- 239000010705 motor oil Substances 0.000 description 45
- 238000012360 testing method Methods 0.000 description 27
- 230000000052 comparative effect Effects 0.000 description 15
- 239000000047 product Substances 0.000 description 15
- 239000010802 sludge Substances 0.000 description 15
- KZNICNPSHKQLFF-UHFFFAOYSA-N succinimide Chemical compound O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 9
- 239000002199 base oil Substances 0.000 description 9
- 229910052799 carbon Inorganic materials 0.000 description 9
- 229940035422 diphenylamine Drugs 0.000 description 9
- 238000002485 combustion reaction Methods 0.000 description 7
- 230000008021 deposition Effects 0.000 description 7
- 238000003756 stirring Methods 0.000 description 7
- 230000003749 cleanliness Effects 0.000 description 6
- 229960002317 succinimide Drugs 0.000 description 6
- 238000009472 formulation Methods 0.000 description 5
- 239000000446 fuel Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000004088 simulation Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- 150000001412 amines Chemical class 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 150000003254 radicals Chemical class 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- 229910052721 tungsten Inorganic materials 0.000 description 3
- 239000010937 tungsten Substances 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 159000000003 magnesium salts Chemical class 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- KHYKFSXXGRUKRE-UHFFFAOYSA-J molybdenum(4+) tetracarbamodithioate Chemical compound C(N)([S-])=S.[Mo+4].C(N)([S-])=S.C(N)([S-])=S.C(N)([S-])=S KHYKFSXXGRUKRE-UHFFFAOYSA-J 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 229920002545 silicone oil Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- OGKYSWUTFQDGKE-UHFFFAOYSA-B [W+4].P(=S)([O-])([O-])[O-].P(=S)([O-])([O-])[O-].P(=S)([O-])([O-])[O-].P(=S)([O-])([O-])[O-].[W+4].[W+4] Chemical compound [W+4].P(=S)([O-])([O-])[O-].P(=S)([O-])([O-])[O-].P(=S)([O-])([O-])[O-].P(=S)([O-])([O-])[O-].[W+4].[W+4] OGKYSWUTFQDGKE-UHFFFAOYSA-B 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 125000004202 aminomethyl group Chemical group [H]N([H])C([H])([H])* 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229920001577 copolymer Polymers 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
- 230000007547 defect Effects 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000003574 free electron Substances 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 150000002605 large molecules Chemical class 0.000 description 1
- 229920005684 linear copolymer Polymers 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- YCWSUKQGVSGXJO-NTUHNPAUSA-N nifuroxazide Chemical group C1=CC(O)=CC=C1C(=O)N\N=C\C1=CC=C([N+]([O-])=O)O1 YCWSUKQGVSGXJO-NTUHNPAUSA-N 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- LSEGQIWJXNQIHK-UHFFFAOYSA-N oxo(sulfanylidene)tungsten Chemical compound O=[W]=S LSEGQIWJXNQIHK-UHFFFAOYSA-N 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 239000002530 phenolic antioxidant Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 description 1
- 229960001860 salicylate Drugs 0.000 description 1
- 238000013077 scoring method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- WMYJOZQKDZZHAC-UHFFFAOYSA-H trizinc;dioxido-sulfanylidene-sulfido-$l^{5}-phosphane Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S WMYJOZQKDZZHAC-UHFFFAOYSA-H 0.000 description 1
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- Lubricants (AREA)
Abstract
The application discloses diesel engine oil, which comprises the following components in percentage by weight: 0.5 to 1.0 percent of zinc dialkyl dithiophosphate, 1.0 to 2.0 percent of diaryl amine dithiophosphate tungsten oxysulfide, 0.8 to 2.0 percent of diphenylamine sulfide antioxidant, 0.5 to 2.0 percent of benzamide antioxidant containing hindered phenol structure, 1.0 to 4.0 percent of detergent, 0.2 to 3.0 percent of antifriction antiwear agent, 1.0 to 10.0 percent of dispersant, 0.1 to 17.0 percent of comb-shaped polyester, 0.01 to 4.0 percent of pour point depressant, 0.003 to 0.004 percent of defoaming agent and 58.9 to 94 percent of class II paraffin-based synthetic oil. The diesel engine oil takes the vulcanized diphenylamine antioxidant and the benzamide antioxidant containing the hindered phenol structure as antioxidants and the comb-shaped polyester as finger sticking agents, so that the high-temperature oxidation resistance and the cleaning dispersibility of the diesel engine oil are improved, the oil consumption of the diesel engine oil at 500 hours is far lower than that of similar products sold in the market, and the use requirement of a long oil change period under the standard working condition of a commercial vehicle can be met.
Description
Technical Field
The application relates to the technical field of engine oil, in particular to diesel engine oil.
Background
The engine oil, also called engine lubricating oil, can play roles in lubricating antifriction, auxiliary cooling, sealing leakage prevention, rust prevention, corrosion prevention, shock absorption buffering and the like for the engine. The engine oil consists of two parts of base oil and additives, wherein the base oil is the main component of the engine oil, the quality grade (the base oil is divided into I-V types) determines the basic performance of the engine oil, and additives such as an antioxidant, an antiwear agent, a friction reducer, a detergent, a dispersant and the like can make up for the defects of the base oil in some performance aspects, and endow the engine oil with different performances.
In the process of continuously reciprocating working of a piston of an engine, gas in a combustion chamber is blown into a crankcase through a gap between a piston ring and a cylinder wall, and the blow-by gas contains various unburned products, dust, metal oxides and the like, and is mixed with engine oil after entering the crankcase, and then is further oxidized and condensed to form acidic insoluble matters of lubricating oil, and then is bonded with other solids and water vapor to finally form the oil sludge. Sludge generated in different parts of the engine may be classified into low-temperature sludge and high-temperature sludge. The low temperature sludge is generated by the combined action of blow-by gas (containing unburned fuel and water) and engine oil; the high temperature sludge is polymerized into a plurality of relatively large molecules under the condition of high temperature operation of the engine, which causes thickening of the engine oil, namely the viscosity of the engine oil is changed, and the sludge is formed in the long time. If too much oil sludge in the engine can affect the lubrication of the engine, aggravate the abrasion of the engine, and also can block the oil way of the engine, and cause carbon deposition of a piston ring groove of the engine, a clamping ring and a sticking ring, so that the sealing effect of parts such as a piston ring, a cylinder sleeve and the like in the engine is not ideal, and engine oil is caused to enter a combustion chamber of the engine to participate in combustion together with mixed gas, and the phenomenon of abnormal engine oil consumption occurs in a vehicle. Once the engine is operated, oil sludge and carbon deposition are inevitably generated, the engine oil has the function of decomposing the carbon deposition and the oil sludge, decomposition products can be brought into the oil pan through the circulating flow of the engine oil, and finally the engine oil is discharged when the engine oil is replaced.
At present, when the engine oil with a long oil change period is used on a diesel engine, the problem of high engine oil consumption often occurs, customers complain that the engine oil needs to be supplied irregularly, and the main reasons of the engine oil are that the piston is high in carbon deposition, the problems of a clamping ring and a sticking ring are serious, so that the sealing is not tight, the engine oil enters a combustion chamber to participate in combustion, and at the moment, the engine oil needs to be disassembled to replace hardware to solve the problem.
Disclosure of Invention
In order to solve the problems of the diesel engine oil with a long oil change period, the application provides diesel engine oil which has excellent high-temperature oxidation resistance, can reduce the formation of oil sludge, has good cleaning dispersibility, can timely decompose carbon deposition and oil sludge, avoids serious accumulation of the carbon deposition and the oil sludge, can meet the requirement of the diesel engine on the long oil change period, and simultaneously has improved performance in the aspects of lubricity, high temperature resistance, solidification resistance, oxidation resistance and the like compared with the traditional engine oil.
The diesel engine oil provided by the application comprises the following components in percentage by weight:
in some embodiments of the present application, the diaryl amine dithiophosphate tungsten oxysulfide has the following structural formula:
wherein r=c n H 2n+1 ，n＝6-14。
In some embodiments of the present application, the hindered phenol structure-containing benzamide antioxidant has the following structural formula:
wherein r=c n H 2n+1 ，n＝6-8。
In some embodiments of the present application, the zinc dialkyldithiophosphate has the following structural formula:
wherein r=c n H 2n+1 ，n＝2-10。
In some embodiments of the present application, the sulfurized diphenylamines have the following structural formula:
wherein r=c n H 2n+1 ，n＝6-14。
In some embodiments of the present application, the comb polyester is poly (octyl methacrylate) having the following structural formula:
wherein n=500-600.
In some embodiments of the present application, the friction reducing antiwear agent is a molybdenum dialkyldithiocarbamate having the following structural formula:
wherein r=c n H 2n+1 ，n＝4-12。
In some embodiments of the present application, the dispersant consists of 1 to 1.5 by weight: 1 and a polyaminomethyl polyisobutene phenol;
the boronated polyisobutylene succinimide has the following structural general formula:
wherein r=c n H 2n+1 ，n＝6-14，m＝200-500；
The polyaminomethyl polyisobutene phenol has the following structural general formula:
wherein r=c n H 2n+1 ，n＝6-14。
In some embodiments of the present application, the pour point depressant is a polymethacrylate having the following structural formula:
wherein m=10-20, r＝C n H 2n+1 ，n＝6-14。
In some embodiments of the present application, the defoamer is a polydimethyl silicone oil having the following structural formula:
wherein n=100-200.
In some embodiments of the present application, the detergent is magnesium salicylate and/or calcium salicylate, having the following structural formula:
wherein r=c n H 2n+1 N=14-28; m=ca or Mg, m=1-10.
Preferably, the ratio of the detergent to the diesel engine oil is 1.5% -2.5%, the detergent is a compound of magnesium salicylate and calcium salicylate, and the weight ratio of the calcium salicylate to the magnesium salicylate is 2:1-7:4; more preferably, the detergent accounts for 2% of the diesel engine oil, and the weight ratio of the calcium salicylate to the magnesium salicylate is 2:1.
As the preferable choice of the technical proposal, the antifriction antiwear agent accounts for 0.5 percent to 2.0 percent in the diesel engine oil; the proportion of the dispersing agent is 4.0-8.0%; the ratio of the comb-shaped polyester is 4.0% -7.0%; the pour point depressant accounts for 0.01-0.04 percent; the proportion of the class II paraffin-based synthetic oil is 75-85%. Further preferably, the antifriction antiwear agent accounts for 1.0% -2.0% in the diesel engine oil; the proportion of the dispersing agent is 5.0% -7.0%; the ratio of the comb-shaped polyester is 5.0% -6.0%; the pour point depressant accounts for 0.03-0.04 percent; the proportion of the class II paraffin-based synthetic oil is 80-85%.
As the optimization of the technical scheme, the weight ratio of the zinc dialkyl dithiophosphate, the diaryl amine dithiophosphate tungsten oxysulfide, the diphenylamine sulfide antioxidant and the benzamide antioxidant containing the hindered phenol structure is 1:1-2:1-2:1-2.
In some embodiments of the present application, the class II paraffinic synthetic oil consists of 15W40150N and 500N, specifically, 150N and 500N in a weight ratio of 1:1-2.
Compared with the prior art, the application has the following advantages and beneficial effects:
the diesel engine oil provided by the application takes the vulcanized diphenylamine antioxidant and the benzamide antioxidant containing the hindered phenol structure as antioxidants and the comb-shaped polyester as finger sticking agents, so that the high-temperature oxidation resistance and the cleaning dispersibility of the diesel engine oil are improved, the oil consumption of the diesel engine oil at 500 hours is far lower than that of similar products sold in the market, and the use requirement of a long oil change period under the standard working condition of a commercial vehicle can be met.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a graph of 100 degrees celsius kinematic viscosity change of diesel engine oil provided in example 1 of the present application.
Fig. 2 is a graph showing the change in the content of Fe as a wear element in the diesel engine oil according to example 1 of the present application.
Fig. 3 is a graph showing the change in the content of Cu as a wear element in the diesel engine oil according to example 1 of the present application.
Fig. 4 is a graph showing the content change of the wear element Al of the diesel engine oil provided in example 1 of the present application.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be clearly and completely described in conjunction with the embodiments of the present application, and it is apparent that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.
The application aims at developing diesel engine oil meeting the requirement of a long oil change period, and the diesel engine oil comprises the following components in percentage by weight:
the diesel engine oil is 15W40 engine oil, W represents engine oil used in winter, 15W represents engine oil used in winter with the lowest temperature of-20 ℃ and 40 represents engine oil with the kinematic viscosity standard of 12.5mm at 100 DEG C 2 /s to 16.3mm 2 Between/s.
Among the above components, the main antioxidant is a sulfurized diphenylamine antioxidant and a benzamide antioxidant containing a hindered phenol structure, wherein the benzamide antioxidant containing the hindered phenol structure is used for capturing free radicals (small groups with free electrons), and the performance is good below 150 ℃; the vulcanized diphenylamine antioxidant is used for capturing free radicals and has good performance at a high temperature of more than 150 ℃; zinc dialkyl dithiophosphate and tungsten diaryl amido dithiophosphate have the functions of resisting oxidation and abrasion, and the zinc dialkyl dithiophosphate can decompose peroxide, has good performance at high temperature, but the decomposition products have precipitation; the diaryl amido dithiophosphoric acid tungsten oxysulfide contains amino, aryl, tungsten phosphorothioate and other elements, has the functions of resisting oxidation, resisting wear, reducing friction, cleaning and dispersing under high temperature friction, can disperse a decomposition product of zinc dialkyl dithiophosphate into engine oil, is brought into an oil pan through the circulating flow of the engine oil, and is finally discharged when the engine oil is replaced.
In addition, the benzamide antioxidant and the vulcanized diphenylamine antioxidant containing the hindered phenol structure have an antioxidant synergistic effect, amine is firstly converted into ammonia free radical and then is subjected to hydrogen regeneration of phenolic hydroxyl of hindered phenol amine to generate amine, and the amine can be combined with the free radical of engine oil oxidation to prevent further oxidation of the engine oil; the vulcanized diphenylamine antioxidant and the dialkyl zinc dithiophosphate have the synergistic effect of resisting oxidation and abrasion; the vulcanized diphenylamine antioxidant belongs to a heterocyclic antioxidant and has certain antiwear performance; the diaryl amine dithiophosphoric acid oxygen tungsten sulfide and the dialkyl dithiophosphoric acid zinc also have synergistic effect on wear resistance, sulfur and phosphorus elements have affinity with the metal surface, friction reduction effect is achieved during friction, when the friction surface is high in temperature and high in load, sulfur and phosphorus can form a chemical reaction film with the metal surface, the wear resistance is improved, meanwhile, tungsten element can absorb part of sulfur elements, corrosion of sulfur on the friction surface is reduced, tungsten with high price (positive 6 price) is a strong oxidant, aromatic hydrocarbon in oil can be converted into phenolic antioxidant, and therefore the oxidation resistance of engine oil is improved.
Among the above components, the detergent adopts calcium salicylate and/or magnesium salicylate, preferably a compound of calcium salicylate and magnesium salicylate, the magnesium salt has low molecular weight relative to calcium salt (magnesium has relative to atomic mass 24 and calcium has relative to atomic mass 40), the magnesium salt with unit mass can provide more acid neutralizing capacity (TBN), the salicylate has better antioxidant effect relative to sulfonate, and the base number holding capacity is better, so that the engine oil has longer service life.
Among the components, the antifriction antiwear agent adopts dialkyl molybdenum dithiocarbamate, and zinc dialkyl dithiophosphate and diaryl amido dithiophosphate tungsten oxysulfide have antiwear effect, and the three cooperate to play a role in antifriction; compared with the existing product, the zinc dialkyl dithiocarbamate can improve the antifriction performance of engine oil, reduce the noise of an engine, reduce the abrasion of the engine, save energy and reduce consumption.
The dispersing agent comprises the following components in percentage by weight of 1-1.5:1 and a polyaminomethyl polyisobutene phenol; compared with the polyisobutene succinimide adopted by the existing product, the polyisobutene methyl polyisobutene phenol has a polar structure containing phenol functional groups, and can improve the dispersibility of the oil sludge; compared with polyisobutylene succinimide, the boronized polyisobutylene succinimide can reduce the aggressiveness to the rubber piece, prevent the rubber piece from becoming hard and brittle, and prolong the service life of the sealing piece.
Among the above components, the finger sticking agent adopts comb-shaped polyester, preferably poly (octyl methacrylate), and the substance contains polar structure of ester group, and is comb-shaped arrangement, compared with OCP ethylene and propylene linear copolymer adopted by the existing product, the finger sticking agent has good shearing resistance, and can promote the dispersion performance of oil sludge. Because of the comb-shaped regular arrangement, the molecular structure is regularly shrunk at normal low temperature, so that the viscosity of the engine oil is slightly increased, when the engine oil is at high temperature, the molecular chains are fully unfolded, and the high-temperature high-shear viscosity of the engine oil is improved, so that heavy components (the kinematic viscosity of 150N base oil at 100 ℃ is 5-6 mm) can be added into the engine oil formula 2 Per second, 500N base oil with a kinematic viscosity of 9.5-10mm at 100 DEG C 2 And/s, heavy component refers to 500N base oil), further reducing the evaporation loss of the engine oil.
As the preferable formula, the proportion of the detergent in the diesel engine oil is 1.5-2.5%, the detergent is a compound of magnesium salicylate and calcium salicylate, and the weight ratio of the calcium salicylate to the magnesium salicylate is 2:1-7:4; more preferably, the detergent accounts for 2% of the diesel engine oil, and the weight ratio of the calcium salicylate to the magnesium salicylate is 2:1.
As the preferable choice of the technical proposal, the antifriction antiwear agent accounts for 0.5 percent to 2.0 percent in the diesel engine oil; the proportion of the dispersing agent is 4.0-8.0%; the ratio of the comb-shaped polyester is 4.0% -7.0%; the pour point depressant accounts for 0.01-0.04 percent; the proportion of the class II paraffin-based synthetic oil is 75-85%. Further preferably, the antifriction antiwear agent accounts for 1.0% -2.0% in the diesel engine oil; the proportion of the dispersing agent is 5.0% -7.0%; the ratio of the comb-shaped polyester is 5.0% -6.0%; the pour point depressant accounts for 0.03-0.04 percent; the proportion of the class II paraffin-based synthetic oil is 80-85%. Still more preferably, the class II paraffinic synthetic oil consists of 15W40150N and 500N, in particular 150N and 500N in a weight ratio of 1:1-2.
As the optimization of the technical scheme, the weight ratio of the zinc dialkyl dithiophosphate, the diaryl amine dithiophosphate tungsten oxysulfide, the diphenylamine sulfide antioxidant and the benzamide antioxidant containing the hindered phenol structure is 1:1-2:1-2:1-2.
The preparation method of the diesel engine oil comprises the following steps:
the comb-shaped polyester and II-type paraffin-based synthetic oil are put into a blending kettle together, dispersing agent, pour point depressant, zinc dialkyl dithiophosphate, diaryl amine dithiophosphate tungsten oxysulfide, diphenyl amine antioxidant, benzamide antioxidant containing hindered phenol structure, detergent and antifriction antiwear agent are added according to the proportion, stirring and heating are started to 70-75 ℃ and kept at the temperature, stirring is continued in the whole process, and finally defoaming agent is added, stirring is continued, and the stirring temperature is 62 ℃ to prepare the diesel engine oil.
The following examples and comparative examples employ the following components, unless otherwise specified:
the antioxidant and antiwear agent 1 adopts zinc dialkyl dithiophosphate and has the structural formula:
R＝C n H 2n+1 ，n＝2-10。
the antioxidant and antiwear agent 2 adopts diaryl amine dithiophosphoric acid tungsten oxysulfide, and has the structural formula:
R＝C n H 2n+1 ，n＝6-14。
the antioxidant 3 adopts a vulcanized diphenylamine antioxidant, and has the structural formula:
R＝C n H 2n+1 ，n＝6-14。
the antioxidant 4 adopts benzamide antioxidants containing hindered phenol structures, and the structural formula is as follows:
R＝C n H 2n+1 ，n＝6-8。
the antioxidant 5 adopts alkyl diphenylamine, and the antioxidant effect is weaker than that of the antioxidant 3, but the S content exceeds the standard.
The detergent 1 adopts calcium salicylate, the detergent 2 adopts magnesium salicylate, and the two have the following structural general formula:
R＝C n H 2n+1 n=14-28; m=ca or Mg, m=1-10.
The detergent 3 adopts calcium sulfonate.
The antifriction and antiwear agent adopts dialkyl molybdenum dithiocarbamate, and has the structural formula:
R＝C n H 2n+1 ，n＝4-12。
the dispersant 1 adopts boronated polyisobutene succinimide, and has the structural formula:
R＝C n H 2n+1 ，n＝6-14，m＝200-500。
the dispersant 2 adopts poly-aminomethyl polyisobutene phenol with the structural formula:
R＝CnH 2n+1 ，n＝6-14。
the dispersant 3 is polyisobutylene succinimide.
The finger sticking agent 1 adopts comb-shaped poly (octyl methacrylate) and has the structural formula:
n＝500-600。
the finger sticking agent 2 adopts OCP (ethylene propylene copolymer).
The pour point depressant adopts PMA (polymethacrylate) and has the structural formula:
m＝10-20，R＝C n H 2n+1 ，n＝6-14。
the defoaming agent adopts polydimethyl silicone oil and has the structural formula:
n＝100-200。
the base oil adopts II-type paraffin-based synthetic oil and consists of 150N and 500N in a weight ratio of 1:2.
The technical scheme of the application is further described in detail through specific embodiments:
examples and comparative examples
The components were prepared according to the formulations shown in tables 1 to 4 and prepared into diesel engine oils by the following methods:
(1) Sol: if the finger sticking agent is solid (dry glue) at normal temperature, the sol is needed to be carried out at 140 ℃, and if the finger sticking agent is liquid (wet glue), the sol is not needed;
(2) Compounding: the finger sticking agent and the base oil are put into a blending kettle together, a dispersing agent, a pour point depressant, an antioxidant, a detergent, a friction reducer and an antiwear agent are added according to the proportion, stirring and heating are started to 70-75 ℃, the temperature is kept, and stirring is continued for 2 hours in the whole process.
(3) Blending: and finally, adding an antifoaming agent into the product obtained in the step (2), and continuously stirring for 2 hours at the temperature of 62 ℃ to obtain the diesel engine oil.
Table 1 formulation of diesel engine oils provided in examples and comparative examples
Table 2 formulation of diesel engine oils provided in examples and comparative examples
Table 3 formulation of diesel engine oils provided in examples and comparative examples
Table 4 formulation of diesel engine oils provided in examples and comparative examples
(2) Physical and chemical index test:
the physical and chemical index test results of the diesel engine oil in the above examples and comparative examples are shown in tables 5-7, and each physical and chemical index of the three examples can meet the standard limit requirement.
Table 5 physicochemical index test of examples and comparative examples
Table 6 physicochemical index test of examples and comparative examples
Table 7 physicochemical index test of examples and comparative examples
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(3) Simulation test:
in addition to physical and chemical index tests, the engine oil is tested for various performances through a simulation test, and the test methods are shown in tables 8 and 9.
Table 8 simulation test results
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Table 9 simulation test results
(4) Oil consumption test:
the purpose of the application is to reduce the oil consumption by inventing a new oil formula, and to this end, the diesel engine oil of the example 1 with the best physicochemical and simulation properties is selected for 24-hour oil consumption test. The test was carried out according to GB/T18297-2001 "automobile Engine Performance test method", and the test oil before and after improvement was carried on a diesel engine for 500h of engine-to-fuel ratio (engine-to-fuel ratio=oil consumption/fuel consumption) test, and the results are shown in Table 10.
Table 10 results of 24 hour time oil consumption test
According to the standard requirement, the engine combustion ratio after the test is less than or equal to 0.8 per mill, and the test results show that the engine combustion ratio after the 500h test using the engine oil test of the comparative example 9 (social product) does not meet the standard requirement. The engine oil of the embodiment 1 of the application is carried on the same diesel engine to carry out 24h engine oil consumption test conclusion: the fuel ratio before and after 500h test meets the standard requirement.
(5) And (3) verifying the reliability of the bench test:
the diesel engine oil provided in embodiment 1 of the present application is carried on a diesel engine and subjected to 500-hour wear bench test, and changes in indices such as KV100 (kinematic viscosity at 100 ℃) of the diesel engine oil, and contents of wear elements Fe, cu, al are detected, as shown in fig. 1 to 4, and all monitoring indices are normal.
The piston top and head (fire case) carbon deposition conditions of the diesel engine oil provided in example 1 of the present application were significantly improved compared to comparative example 9 (social product) by using the same diesel engine and the same test conditions. Piston cleanliness scores according to the shortcoming scoring method specified in CRC No.20, CRC scoring handbook (lower score means worse piston cleanliness), the diesel engine oil provided in example 1 of the present application tests 6 cylinder piston overall scores (about 70 score), and compared with comparative example 1 (social product) scores (about 90 score), the cleanliness is better; the diesel engine oil provided in example 1 of the present application is mainly different from the diesel engine oil of comparative example 9 (social product) in that the ring grooves have no medium and heavy carbon, and the piston cleanliness scores are shown in tables 11 and 12.
Table 11 comparative example 9 (social product) engine oil piston detergency score
Table 12 piston cleanliness scores for diesel engine oils provided in example 1 of the present application
The results show that the diesel engine oil provided by the application meets the use requirement of a long oil change period under the standard working condition of a commercial vehicle, compared with the commercial similar products, the diesel engine oil has the advantages that the engine ring groove of the diesel engine oil provided by the application is free of medium and heavy carbon, the piston cleanliness is good, and the oil consumption is greatly reduced at 500 hours under the same diesel engine and the same test conditions.
The foregoing is merely a specific embodiment of the application to enable one skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The diesel engine oil is characterized by comprising the following components in percentage by weight:
2. the diesel engine oil according to claim 1, characterized in that: the diaryl amine dithiophosphoric acid tungsten oxysulfide has the following structural general formula:
wherein r=c n H 2n+1 ，n＝6-14。
3. The diesel engine oil according to claim 1, characterized in that: the benzamide antioxidant containing the hindered phenol structure has the following structural general formula:
wherein r=c n H 2n+1 ，n＝6-8。
4. The diesel engine oil according to claim 1, characterized in that: the zinc dialkyl dithiophosphate has the following structural general formula:
wherein r=c n H 2n+1 ，n＝2-10。
5. The diesel engine oil according to claim 1, characterized in that: the vulcanized diphenylamine has the following structural general formula:
wherein r=c n H 2n+1 ，n＝6-14。
6. The diesel engine oil according to claim 1, characterized in that: the comb-shaped polyester is poly (octyl methacrylate) and has the following structural general formula:
wherein n=500-600.
7. The diesel engine oil according to claim 1, characterized in that: the dispersing agent comprises the following components in percentage by weight of 1-1.5:1 and a polyaminomethyl polyisobutene phenol.
8. The diesel engine oil according to claim 1, characterized in that: the pour point depressant is polymethacrylate; the defoaming agent is polydimethylsiloxane oil; the detergent is magnesium salicylate and/or calcium salicylate; the antifriction antiwear agent is molybdenum dialkyl dithiocarbamate.
9. The diesel engine oil according to claim 1, characterized in that: the weight ratio of the zinc dialkyl dithiophosphate to the diaryl amine dithiophosphate to the tungsten oxysulfide to the diphenylamine sulfide antioxidant to the benzamide antioxidant containing the hindered phenol structure is 1:1-2:1-2:1-2.
10. The diesel engine oil according to claim 1, characterized in that: the antifriction antiwear agent accounts for 0.5% -2.0% in the diesel engine oil; the proportion of the dispersing agent is 4.0-8.0%; the ratio of the comb-shaped polyester is 4.0% -7.0%; the pour point depressant accounts for 0.01-0.04 percent; the proportion of the class II paraffin-based synthetic oil is 75-85%.
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