CN1117993A - Lubricating oil composite for diesel engine - Google Patents
Lubricating oil composite for diesel engine Download PDFInfo
- Publication number
- CN1117993A CN1117993A CN 94106383 CN94106383A CN1117993A CN 1117993 A CN1117993 A CN 1117993A CN 94106383 CN94106383 CN 94106383 CN 94106383 A CN94106383 A CN 94106383A CN 1117993 A CN1117993 A CN 1117993A
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- Prior art keywords
- diesel engine
- lubricating oil
- composition
- oil
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
Abstract
The present invention provides a new lubricating oil composite for diesel engine. Said composite is characterized by that it ingeniously utilizes the combination action of alkylphenol calcium sulfide and calcium salicylate, so that as compared with other type additive composites of diesel oil it has better high-temp. cleanliness property, in particular, its effect of solving carbon-filling rate of top-ring groove of engine is very good, and its application is relatively economic.
Description
The present invention relates to a kind of lubricating oil composite for diesel engine, particularly a kind of lubricating oil composite for diesel engine that can obviously improve the engine piston high temperature detergency.Specifically, the present invention relates to except that containing dispersion agent, oxidation and corrosion inhibitor, also have the lubricating oil composite for diesel engine of a certain amount of calcium sulfenyl phenolate (hereinafter to be referred as phenates) and alkyl sodium salicylate (hereinafter to be referred as salicylate) mixture.
As everyone knows, provide lubricating oil composite for diesel engine make diesel motor in use avoid piston deposit too much so that sticking ring cause accident such as can't run well, and to prolong engine life simultaneously be an industrial big task.
World patent WO93/12208 relates to a kind of lubricating oil rust-proof component.By adding a kind of rust-preventive agent in less than 1.5 lubricant base, can make water/oily interfacial tension be reduced to 1～4mN/m in average number of rings.
U.S. Pat 5078892 relates to phenol and alkylphenol substituent composition:
R is alkyl or alkyl in the formula, and carbonatoms is between 1～20.It shows that metal-salt is precipitated out, and has improved the thermostability of this liquid stabiliser composition significantly along with the reducing of its viscosity from the liquid lubrication stabiliser composition.The preferred group of this liquid stabiliser composition becomes: oil (0.5～5.0 weight part), thermo-stabilizer (0.1～1.0 weight part), metal-salt (0.15～1.0 weight part), phenol (2.0～10 weight part).
Chinese patent CN86107556A relates to a kind of lubricant production process.Specifically, production has the method for the lube stock of index pour point and high viscosity index (HVI), this method is by the catalytic dewaxing to the lubricating oil basic raw material that contains the wax alkane component, make wax alkane component isomery become the isoparaffin component of less wax, obtain having the lube stock product of index pour point and high viscosity index (HVI).
Chinese patent CN1021344C relates to a kind of improved lubricant compositions for low-temp internal combustion engine.Said composition comprises lubricant viscosity oil and the accessory constituent as main ingredient: (A) overbased sulfonate of (1) at least a overbased sulfonate or phenates and (2) at least a magnesium or the mixture of phenates, (B) wherein mixed C a and Mg washing inhibitor and mix di-primary hydrocarbyl dithiophosphoric acid zinc and di-secondary hydrocarbyl dithiophosphoric acid zinc antiwear agents is used with suitable proportion of the mixture of (1) at least a di-primary hydrocarbyl dithiophosphoric acid zinc and (2) at least a di-secondary hydrocarbyl dithiophosphoric acid zinc.Do not relate to salicylate.
Generally speaking, do not have in the above-mentioned document one piece openly control phenates and salicylate relative content can obtain actual benefit.
The object of the present invention is to provide a kind of lubricating oil composite for diesel engine, it can overcome the weak point in the above-mentioned prior art lubricating oil.
The invention provides the diesel engine oil composition that can obviously improve the engine piston high temperature detergency.Said composition comprises as the lubricant viscosity of main component oil with as the following component of ancillary component:
(A) high base number phenates;
(B) salicylate;
(C) polyisobutene succinimide;
(D) at least a zinc dialkyl dithiophosphate;
Wherein component (A) accounts for 0.7～1.5wt% of diesel engine oil composition weight; Component (B) accounts for 0.5～3.0wt% of diesel engine oil composition weight; Component (C) accounts for 1.0～2.0wt% of diesel engine oil composition weight; Component (D) accounts for 0.7～1.0wt% of diesel engine oil composition weight; Component (A) and weight ratio (B) are about 1: 2～2: 1.
Basis of the present invention is to be surprised to find that between the high temperature detergency of diesel engine oil composition and the phenates/salicylate ratio definite relation is arranged, and these mixtures additive inhibition piston to a certain degree of giving unit weight forms sedimental effect just, and this is not recognize before this area.What have equivalence is, desirable character of other of lubricating oil and effect, and for example suitability, dispersiveness, oxidation corrosion resistance, resistance to abrasion are not therefore and impaired.
The structure of the alkyl monosulfide phenates that uses in the diesel engine oil composition of the present invention is as follows:
R is the alkyl of carbonatoms 8-14 in the formula, x=1～3, y=1～6, n=1～20.
Because calcium sulfenyl phenolate has above constructional feature, the polarity of phenates is strengthened, detergency makes moderate progress, and its antioxidant anticorrosive and abrasion resistance are obviously improved; The lengthening of molecular chain also has good effect to dispersed and oil soluble simultaneously.What is particularly worth mentioning is that testing of engine proves that phenates has special effect to solving piston head annular groove carbon-filling rate.Thereby determine that it is said composition one of key ingredient.
The structure of the alkyl sodium salicylate that the present invention uses is as follows:
R is the alkyl of carbonatoms 8～14 in the formula, n=1～10.
Because the salicylate intramolecularly can form hydrogen bond, cause that the atoms metal out-shell electron further moves, thereby salicylate also has very strong polarity, and demonstrate the peace and quiet effect of excellent high-temperature; Follow its molecular polarity stronger simultaneously, alkyl sodium salicylate in lubricating oil, form two repeatedly thing, three repeatedly thing etc. have bigger bond energy, thereby it is relatively poor to the flexible strain property of oxidation products in the lubricating oil and impurity thereof etc., its critical micelle concentration is higher, and low temperature dissemination and stabilization are not ideal enough.But after itself and the compound use of calcium sulfenyl phenolate, can remedy above-mentioned deficiency, and demonstrate good synergy.
The ratio of various additives in the composition among the present invention (referring to four kinds of components of A.B.C.D) is determined by the heat pipe oxidation test.Sedimental forming process in the engine has been simulated in this test effectively, reins in 1H with the katal skin
2, 1G
2Test has certain dependency.
Composition among the present invention is applicable to that viscosity index is 50～80 intermediate base mineral oil, and is compound with an amount of pour point depressant, kilfoam, viscosity index improver, can modulate the diesel engine oil of multiple quality scale.This quasi-tradition additive belongs to known content, need not to give unnecessary details at this.
When containing these traditional additives in the composition, be said composition to be blended among the base oil generally speaking with effective level that common attach feature can be provided.In the sufficient oil product of preparation, (being used as active ingredient respectively) effective level of this class additive is as follows:
Form (weight) %A.I (weight) %A.I.
(optimum range) (general preferable range)
Total component component (A) high base number phenates 0.7～1.5 0.7～1.5 component (B) salicylate 0.5～2.5 0.5～3.0 component (C) polyisobutene succinimide 1.0～2.0 1.0～2.0 component (D) zinc dialkyl dithiophosphates 0.7～1.0 0.7～1.0 pour-point depressant 0.1～0.5 0.01～5 viscosity index improvers 0.5～1.5 0.01～12 anti-foaming agents 0.001～0.1 0.001～2.5 intermediate base mineral oil surplus surpluses
Above-mentioned each component was fully stirred 4 hours under 85 ± 5 ℃ of conditions; Can obtain the diesel lubrication oil of different mass.
The following examples are to further specify of the present invention, are not to limit the scope of the invention.
Embodiment
Prepare a total composition diesel engine oil, it contains phenates, salicylate, polyisobutene succinimide, zinc dialkyl dithiophosphate, viscosity index improver.The data that obtain thus are summarized in table 1.
Table 1
Annotate:
| Comparative example | Embodiment | Test method | ||
| Component (wt, %) | Calcium sulfenyl phenolate (1) alkyl sodium salicylate (2) polyisobutene succinimide (3) dialkyl group curing zinc phosphate (4) | ????2.9 ????0 ????1.8 ????0.7 | ????1.3 ????1.6 ????1.8 ????0.7 | |
| The oil brand of transferring | ??L-ECC40 | ??L-ECC40 | ||
| Test-results | 1135 single-barrel engines test apical ring groove carbon-filling rate, the total weighted scoring (6) of V% (5) | ????1.1 ????256.7 | ????10 ????97.9 | ????SH/T0075 |
| The test of coking proneness is burnt heavy, mg (7) | ????39.7 | ????29.6 | ??Q/LZJS·2001 | |
| Heat pipe oxidation test grading (8) | ????4 | ????3 | ??Q/LZJS·2002 | |
| Detergency test (reinforcement) grading (9) | ????4.5 | ????3.5 | ??SH/T0269 | |
| High Temperature Detergent Experiment (1H 2) the apical ring groove fills the cage device, V%. (10) total weighted scoring (11) piston ring side clearance changes mm (12) | ????- ????- ????- | ????10 ????139 ????＜0.013 | ??GB/T9932 |
(1) alkyl monosulfide phenates, calcium contents 8.9%; Total basicnumber 256mgKOH/g;
Sulphur content 3.03%; For Lanzhou oil-refining chemical head factory produces T115B.
(2) alkyl sodium salicylate, calcium contents 6.0%; Total basicnumber 162mgKOH/g;
Sulfated ash 19.78%; For Lanzhou oil-refining chemical head factory produces T109.
(3) polyisobutene succinimide, nitrogen content 1.35%; Acid number 1.40mgKOH/g; Cl content 0.35%; For Lanzhou oil-refining chemical head factory produces T152.
(4) zinc dialkyl dithiophosphate, zinc content 8.7%; Phosphorus content 7.18%; PH value 5.2; Acid number 122; For Lanzhou oil-refining chemical head factory produces T203.
(5) specification requirement is not more than 45%.
(6) specification requirement is not more than 140 fens.
(7) Jiao heavily be 0 o'clock best.
(8) 0 grades are cleaning, and 10 grades the poorest.
(9) 0 grades best, and 5 grades the poorest.
(10) specification requirement is not more than 45%.
(11) specification requirement is not more than 140 fens.
(12) specification requirement is not more than 0.013mm.
Can draw as drawing a conclusion by table 1:
1. add phenates in the diesel engine oil and can obviously improve apical ring groove carbon-filling rate.
2. the compound use of phenates and salicylate has synergy.
3. phenates and salicylate have an optimum proportion scope, in this scope internal modulation
Product can satisfy specification requirement.
Claims (3)
1. a lubricating oil composite for diesel engine is characterized in that composition of the present invention is by SULFURIZED CALCIUM ALKYL PHENATE WITH HIGH BASE NUMBER, alkyl sodium salicylate, and polyisobutene succinimide, zinc dialkyl dithiophosphate and lubricating oil viscosity oil are formed.
2. composition according to claim 1 is characterized in that the weight ratio of calcium sulfenyl phenolate and alkyl sodium salicylate is 1: 2～2: 1 in the composition.
3. composition according to claim 1 is characterized in that calcium sulfenyl phenolate accounts for 0.7～1.5wt% of diesel engine oil composition weight; 0.5～3.0wt% polyisobutene succinimide that alkyl sodium salicylate accounts for diesel engine oil composition weight accounts for 1.0～2.0wt% of diesel engine oil composition weight; Zinc dialkyl dithiophosphate accounts for 0.7～1.0wt% of diesel engine oil composition weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94106383 CN1040548C (en) | 1994-06-18 | 1994-06-18 | Lubricating oil composite for diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94106383 CN1040548C (en) | 1994-06-18 | 1994-06-18 | Lubricating oil composite for diesel engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1117993A true CN1117993A (en) | 1996-03-06 |
| CN1040548C CN1040548C (en) | 1998-11-04 |
Family
ID=5032527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94106383 Expired - Lifetime CN1040548C (en) | 1994-06-18 | 1994-06-18 | Lubricating oil composite for diesel engine |
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| Country | Link |
|---|---|
| CN (1) | CN1040548C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1093874C (en) * | 1997-04-16 | 2002-11-06 | 出光兴产株式会社 | Diesel engine oil composition |
| CN100439404C (en) * | 2001-05-15 | 2008-12-03 | 巴斯福股份公司 | Method for producing polyalkenyl succinimide products, novel polyalkenyl succinimide products with improved properties, inter mediate products and use thereof |
| CN101952400B (en) * | 2007-12-25 | 2015-01-28 | 新日本石油株式会社 | Cylinder lubricating oil composition for crosshead type diesel engine |
| WO2015089781A1 (en) * | 2013-12-19 | 2015-06-25 | 龚金凤 | Viscosity index improver for internal combustion engine oil |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108203615B (en) * | 2016-12-20 | 2021-08-31 | 中国石油天然气股份有限公司 | Low-ash lubricating oil composition |
-
1994
- 1994-06-18 CN CN 94106383 patent/CN1040548C/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1093874C (en) * | 1997-04-16 | 2002-11-06 | 出光兴产株式会社 | Diesel engine oil composition |
| CN100439404C (en) * | 2001-05-15 | 2008-12-03 | 巴斯福股份公司 | Method for producing polyalkenyl succinimide products, novel polyalkenyl succinimide products with improved properties, inter mediate products and use thereof |
| US8263535B2 (en) | 2001-05-15 | 2012-09-11 | Basf Aktiengesellschaft | Method for producing polyalkenyl succinimide products, novel polyalkenylsuccinimide products with improved properties, intermediate products |
| CN101952400B (en) * | 2007-12-25 | 2015-01-28 | 新日本石油株式会社 | Cylinder lubricating oil composition for crosshead type diesel engine |
| WO2015089781A1 (en) * | 2013-12-19 | 2015-06-25 | 龚金凤 | Viscosity index improver for internal combustion engine oil |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1040548C (en) | 1998-11-04 |
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Addressee: Lanzhou Oil Refining Chemical Genernal Plant, Chinese Petro-Chemical Corp. Document name: Notification of Expiration of Patent Right Duration |