CN113004962A - Special engine oil for methanol engine - Google Patents
Special engine oil for methanol engine Download PDFInfo
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- CN113004962A CN113004962A CN202110168234.7A CN202110168234A CN113004962A CN 113004962 A CN113004962 A CN 113004962A CN 202110168234 A CN202110168234 A CN 202110168234A CN 113004962 A CN113004962 A CN 113004962A
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- engine oil
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- methanol
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- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 title claims abstract description 192
- 239000010705 motor oil Substances 0.000 title claims abstract description 93
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 31
- 239000003599 detergent Substances 0.000 claims abstract description 24
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 18
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 18
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 13
- AVVIDTZRJBSXML-UHFFFAOYSA-L calcium;2-carboxyphenolate;dihydrate Chemical group O.O.[Ca+2].OC1=CC=CC=C1C([O-])=O.OC1=CC=CC=C1C([O-])=O AVVIDTZRJBSXML-UHFFFAOYSA-L 0.000 claims abstract description 13
- 229920001577 copolymer Polymers 0.000 claims abstract description 12
- 230000000994 depressogenic effect Effects 0.000 claims abstract description 12
- 239000002270 dispersing agent Substances 0.000 claims abstract description 12
- 239000002199 base oil Substances 0.000 claims abstract description 11
- 150000004867 thiadiazoles Chemical group 0.000 claims abstract description 6
- KZNICNPSHKQLFF-UHFFFAOYSA-N succinimide Chemical compound O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 claims description 10
- 229920002367 Polyisobutene Polymers 0.000 claims description 5
- 229960002317 succinimide Drugs 0.000 claims description 5
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 4
- 229920013639 polyalphaolefin Polymers 0.000 claims description 4
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000010711 gasoline engine oil Substances 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract description 5
- 239000011575 calcium Substances 0.000 abstract description 5
- 229910052791 calcium Inorganic materials 0.000 abstract description 5
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 abstract description 5
- 229920000193 polymethacrylate Polymers 0.000 description 13
- 239000010721 machine oil Substances 0.000 description 12
- 239000003921 oil Substances 0.000 description 11
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 10
- 229910052698 phosphorus Inorganic materials 0.000 description 10
- 239000011574 phosphorus Substances 0.000 description 10
- 239000002585 base Substances 0.000 description 9
- 239000000084 colloidal system Substances 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 239000000654 additive Substances 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 231100000572 poisoning Toxicity 0.000 description 5
- 230000000607 poisoning effect Effects 0.000 description 5
- VLLMWSRANPNYQX-UHFFFAOYSA-N thiadiazole Chemical compound C1=CSN=N1.C1=CSN=N1 VLLMWSRANPNYQX-UHFFFAOYSA-N 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000003254 anti-foaming effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- 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
- C10M169/048—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution, non-macromolecular and macromolecular compounds
-
- 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
- C10M2203/1006—Petroleum or coal fractions, e.g. tars, solvents, bitumen 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
-
- 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
- C10M2205/022—Ethene
-
- 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
- C10M2205/024—Propene
-
- 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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/14—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/144—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings containing hydroxy groups
-
- 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/28—Amides; Imides
-
- 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
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
- C10M2219/104—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring containing sulfur and carbon with nitrogen or oxygen in the ring
- C10M2219/106—Thiadiazoles
-
- 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
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
- C10M2223/045—Metal containing thio derivatives
-
- 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
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/04—Siloxanes with specific structure
- C10M2229/041—Siloxanes with specific structure containing aliphatic substituents
Landscapes
- 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 special engine oil for a methanol engine, which comprises base oil, a detergent, a dispersant, a finger-sticking agent, an antioxidant, an antiwear agent, a pour point depressant and an antifoaming agent, wherein the weight ratio of each component is as follows: 68-92 parts of base oil, 0.5-8 parts of a detergent, 1-12 parts of a dispersant, 0.1-17 parts of a finger-sticking agent, 0.2-3 parts of an antioxidant, 0.2-3 parts of an anti-wear agent, 0.1-1 part of a pour point depressant and 0.1-1 part of an anti-foaming agent, wherein the detergent is calcium salicylate, the finger-sticking agent is an ethyl propyl copolymer, and the anti-wear agent is thiadiazole. The special engine oil has better base number retentivity in the use process by being matched with calcium salicylate to replace calcium sulfonate in the traditional gasoline engine oil, and the problems that the engine oil has high ash content and is easy to cause engine pre-ignition due to the increase of the content of a detergent for improving the initial base number of the engine oil are solved.
Description
Technical Field
The invention relates to the field of methanol fuels, in particular to special engine oil for a methanol engine.
Background
The methanol is used as a renewable new energy source, so that the use of primary fuel can be effectively saved, and the pollution of the automobile to the environment and the fuel consumption of automobile users can be reduced.
At present, a methanol engine is mainly used as a commercial vehicle, and used engine oil is gasoline engine oil or engine oil which is subjected to additive content change on the basis of gasoline engine oil to achieve the optimization purpose, but the gasoline engine oil cannot be well matched with the methanol engine, and the following technical problems mainly exist:
1) the gasoline and engine oil has the problem of fast alkali value attenuation when used on a methanol engine, and in order to solve the problem, the gasoline and engine oil increases the initial alkali value of the engine oil by increasing the content of a detergent, so that the ash content of the engine oil is high, and after a certain mileage is reached, the deposit in a combustion chamber of the engine is increased, so that the engine is easy to ignite early, and the piston of the engine is easy to ablate;
2) the finger-sticking agent in the gasoline engine oil is polymethacrylate, and the polymethacrylate and methanol are mutually soluble, so that the polymethacrylate in the engine oil is easily separated out by the methanol and is accumulated in an air inlet channel to form colloid, the oil injector is blocked, the air inlet efficiency is influenced, and the engine power is reduced;
3) the use of the antioxidant ZDDP in gasoline engine oil improves the phosphorus content in the engine oil, which is likely to cause phosphorus poisoning of the three-way catalyst of the engine.
Therefore, it is necessary to provide a special engine oil which can meet the use requirement of the methanol engine and has stable and safe performance to solve the technical problems.
Disclosure of Invention
In order to solve the technical problem, the invention provides special engine oil for a methanol engine. The problem that the engine is easy to ignite early due to high ash content of the engine oil caused by increasing the content of the detergent for improving the initial base number of the engine oil is solved.
The technical effects of the invention are realized as follows:
the special engine oil for the methanol engine comprises base oil, a detergent, a dispersant, a finger-sticking agent, an antioxidant, an antiwear agent, a pour point depressant and an antifoaming agent, wherein the weight ratio of each component is as follows: 68-92 parts of base oil, 0.5-8 parts of detergent, 1-12 parts of dispersant, 0.1-17 parts of finger-gluing agent, 0.2-3 parts of antioxidant, 0.2-3 parts of antiwear agent, 0.1-1 part of pour point depressant and 0.1-1 part of antifoaming agent.
Further, the detergent is calcium salicylate. Calcium salicylate is used as the detergent in the special methanol engine oil to replace calcium sulfonate in the traditional gasoline engine oil, and the calcium salicylate has the characteristics of excellent methanol resistance and excellent high-temperature resistance, so that the special methanol engine oil has better base number retentivity in the process of using the special methanol engine oil, the problem of engine oil base number attenuation is solved, the content of the detergent in the special methanol engine oil is reduced, the ash content of the engine oil is effectively reduced, and the problem of pre-ignition of the engine due to high ash content is solved.
Further, the adhesive is ethyl propyl copolymer. The methyl alcohol special machine oil adhesive uses ethyl propyl copolymer to replace polymethacrylate in gasoline machine oil, and the ethyl propyl copolymer and the methyl alcohol are immiscible, so that the problem that the methyl alcohol separates out the polymethacrylate in the machine oil, and colloid is formed in an air inlet passage in an accumulation manner to block an oil injector to reduce the power of an engine is solved.
Further, the antiwear agent is thiadiazole. The anti-wear agent thiadiazole without ash content is added into the special engine oil for methanol, so that the anti-wear performance of the engine oil is improved, and the use of the antioxidant ZDDP in the engine oil is reduced, thereby reducing the content of phosphorus in the engine oil and avoiding the phosphorus poisoning of a three-way catalyst of an engine.
Further, the base oil is formed by mixing 4# fully synthetic engine oil and 6# fully synthetic engine oil, and the weight ratio of the 4# fully synthetic engine oil to the 6# fully synthetic engine oil is 4: 6.
further, the dispersant is polyisobutylene succinimide.
Further, the antioxidant is ZDDP.
Further, the pour point depressant is a polyalphaolefin.
Further, the anti-foaming agent is methyl silicone oil.
As described above, the present invention has the following advantageous effects:
1) calcium salicylate is used as the detergent in the special methanol engine oil to replace calcium sulfonate in the traditional gasoline engine oil, and the calcium salicylate has the characteristics of excellent methanol resistance and excellent high-temperature resistance, so that the special methanol engine oil has better base number retentivity in the process of using the special methanol engine oil, the problem of engine oil base number attenuation is solved, the content of the detergent in the special methanol engine oil is reduced, the ash content of the engine oil is effectively reduced, and the problem of pre-ignition of the engine due to high ash content is solved.
2) The methyl alcohol special machine oil adhesive uses ethyl propyl copolymer to replace polymethacrylate in gasoline machine oil, and the ethyl propyl copolymer and the methyl alcohol are immiscible, so that the problem that the methyl alcohol separates out the polymethacrylate in the machine oil, and colloid is formed in an air inlet passage in an accumulation manner to block an oil injector to reduce the power of an engine is solved.
3) The antiwear agent is thiadiazole. The anti-wear agent thiadiazole without ash content is added into the special engine oil for methanol, so that the anti-wear performance of the engine oil is improved, and the use of the antioxidant ZDDP in the engine oil is reduced, thereby reducing the content of phosphorus in the engine oil and avoiding the phosphorus poisoning of a three-way catalyst of an engine.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Example 1:
the special engine oil for the methanol engine comprises base oil, a detergent, a dispersant, a finger-sticking agent, an antioxidant, an antiwear agent, a pour point depressant and an antifoaming agent, wherein the weight ratio of each component is as follows: 68-92 parts of base oil, 0.5-8 parts of detergent, 1-12 parts of dispersant, 0.1-17 parts of finger-gluing agent, 0.2-3 parts of antioxidant, 0.2-3 parts of antiwear agent, 0.1-1 part of pour point depressant and 0.1-1 part of antifoaming agent. The detergent, the dispersant, the finger-sticking agent, the antioxidant, the antiwear agent, the pour point depressant, the antifoaming agent and the like are main additives in the special engine oil, and all the additives are methanol-resistant additives, so that the use requirement of a methanol engine can be met.
In this embodiment, the detergent is calcium salicylate. The calcium salicylate has the characteristics of excellent methanol resistance and excellent high-temperature resistance, and the calcium salicylate is used as the detergent in the special methanol engine oil to replace calcium sulfonate in the traditional gasoline engine oil, so that the special methanol engine oil has better base number retentivity in the process of using the special methanol engine oil, the problem of engine oil base number attenuation is solved, the content of the detergent in the special methanol engine oil is reduced, the ash content of the engine oil is effectively reduced, and the problem of early combustion of the engine due to high ash content is solved.
In this embodiment, the adhesive is an ethyl propyl copolymer. The ethyl propyl copolymer and the methanol are not mutually soluble, and the generation of colloid in an air inlet channel can be effectively reduced. The polymethacrylate and the methanol are mutually soluble, and in the using process, the methanol is easy to separate out the polymethacrylate in the engine oil and is accumulated in an air inlet channel to form colloid, so that the oil injector is blocked, the air inlet efficiency is influenced, and the power of an engine is reduced. The methyl alcohol special machine oil adhesive uses ethyl propyl copolymer to replace polymethacrylate in gasoline machine oil, so that the problem that the methyl alcohol separates out polymethacrylate in the machine oil, colloid is formed in an air inlet channel to block an oil injector, and the power of an engine is reduced is solved.
In this embodiment, the antiwear agent is thiadiazole. The anti-wear agent thiadiazole without ash content is added into the special engine oil for methanol, so that the anti-wear performance of the engine oil is improved, and the use of the antioxidant ZDDP in the engine oil is reduced, thereby reducing the content of phosphorus in the engine oil and avoiding the phosphorus poisoning of a three-way catalyst of an engine.
In this embodiment, the base oil is a mixture of 4# fully synthetic engine oil and 6# fully synthetic engine oil, and the weight ratio of the 4# fully synthetic engine oil to the 6# fully synthetic engine oil is 4: 6. 4# and 6# of the 4# fully synthetic engine oil and the 6# fully synthetic engine oil mean kinematic viscosity thereof at 100 ℃, and 4# means kinematic viscosity thereof at 100 ℃ of 4mm2·s-16# means that the kinematic viscosity of the fully synthetic engine oil is 6mm at 100 DEG C2·s-1。
In this example, the dispersant is polyisobutylene succinimide. The polyisobutylene succinimide is specifically polyisobutylene succinimide (low nitrogen), has good cleaning dispersibility, and can inhibit carbon deposit on the engine piston and the generation of paint film.
In this example, the antioxidant is ZDDP. ZDDP is zinc dialkyl dithiophosphate, and the additive can control the oxidation of engine oil when added into engine oil, and has antioxidant, antiwear and anticorrosive effects.
In this embodiment, the pour point depressant is a polyalphaolefin. The poly-alpha-olefin is synthetic oil, has the characteristics of excellent performance in the aspects of oxidation resistance, lubricity, hydrolytic stability, cold startability, protective performance, noise prevention and the like, particularly can improve the lubricating and protective functions of engine oil in the aspect of lubricating protective performance so as to achieve the effect of saving oil, can improve the low-temperature cold startability of an engine, and can ensure that the engine has good cold startability under the condition of low temperature so as to improve the comprehensive performance of the engine oil.
In this embodiment, the anti-foaming agent is methyl silicone oil. The methyl silicone oil antifoaming agent has the characteristics of no color, no odor, no toxicity, good chemical stability and the like, can achieve a good antifoaming effect with a small dosage, and can reduce the bubble oil film by improving the fluidity of the oil film on the surface of the foam, so that the bubbles can be accelerated to rise to the oil surface and break, and the generation amount of the bubbles in the engine oil can be reduced.
The preparation method of the invention is that the raw materials of the components are sequentially added into a container with heating and stirring functions, and the mixture is stirred for 7 hours at the rotating speed of 400r/min at the temperature of 70 +/-5 ℃, thus finishing the preparation of the special engine oil.
As described above, the present invention has the following advantageous effects:
1) calcium salicylate is used as the detergent in the special methanol engine oil to replace calcium sulfonate in the traditional gasoline engine oil, and the calcium salicylate has the characteristics of excellent methanol resistance and excellent high-temperature resistance, so that the special methanol engine oil has better base number retentivity in the process of using the special methanol engine oil, the problem of engine oil base number attenuation is solved, the content of the detergent in the special methanol engine oil is reduced, the ash content of the engine oil is effectively reduced, and the problem of pre-ignition of the engine due to high ash content is solved.
2) The methyl alcohol special machine oil adhesive uses ethyl propyl copolymer to replace polymethacrylate in gasoline machine oil, and the ethyl propyl copolymer and the methyl alcohol are immiscible, so that the problem that the methyl alcohol separates out the polymethacrylate in the machine oil, and colloid is formed in an air inlet passage in an accumulation manner to block an oil injector to reduce the power of an engine is solved.
3) The antiwear agent is thiadiazole. The anti-wear agent thiadiazole without ash content is added into the special engine oil for methanol, so that the anti-wear performance of the engine oil is improved, and the use of the antioxidant ZDDP in the engine oil is reduced, thereby reducing the content of phosphorus in the engine oil and avoiding the phosphorus poisoning of a three-way catalyst of an engine.
The embodiments and features of the embodiments described herein above can be combined with each other without conflict.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (9)
1. The special engine oil for the methanol engine is characterized by comprising base oil, a detergent, a dispersant, a finger-sticking agent, an antioxidant, an antiwear agent, a pour point depressant and an antifoaming agent, wherein the weight ratio of each component is as follows: 68-92 parts of base oil, 0.5-8 parts of detergent, 1-12 parts of dispersant, 0.1-17 parts of finger-gluing agent, 0.2-3 parts of antioxidant, 0.2-3 parts of antiwear agent, 0.1-1 part of pour point depressant and 0.1-1 part of antifoaming agent.
2. The special engine oil for methanol engines as claimed in claim 1, wherein the detergent is calcium salicylate.
3. The special engine oil for methanol engines as claimed in claim 1, wherein the finger-sticking agent is ethyl propyl copolymer.
4. The special engine oil for the methanol engine as claimed in claim 1, wherein the antiwear agent is thiadiazole.
5. The special engine oil for the methanol engine as claimed in claim 1, wherein the base oil is a mixture of 4# fully synthetic engine oil and 6# fully synthetic engine oil, and the weight ratio of the 4# fully synthetic engine oil to the 6# fully synthetic engine oil is 4: 6.
6. the special engine oil for methanol engines as claimed in claim 1, wherein the dispersant is polyisobutylene succinimide.
7. The special engine oil for methanol engines as claimed in claim 1, wherein the antioxidant is ZDDP.
8. The special engine oil for methanol engines as claimed in claim 1, wherein the pour point depressant is polyalphaolefin.
9. The special engine oil for methanol engines as claimed in claim 1, wherein the anti-foaming agent is methyl silicone oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110168234.7A CN113004962A (en) | 2021-02-07 | 2021-02-07 | Special engine oil for methanol engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110168234.7A CN113004962A (en) | 2021-02-07 | 2021-02-07 | Special engine oil for methanol engine |
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| Publication Number | Publication Date |
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| CN113004962A true CN113004962A (en) | 2021-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110168234.7A Pending CN113004962A (en) | 2021-02-07 | 2021-02-07 | Special engine oil for methanol engine |
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| CN (1) | CN113004962A (en) |
Citations (7)
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