EP0326975A1 - Lubricant for traction drive with continuously variable transmission - Google Patents
Lubricant for traction drive with continuously variable transmission Download PDFInfo
- Publication number
- EP0326975A1 EP0326975A1 EP89101495A EP89101495A EP0326975A1 EP 0326975 A1 EP0326975 A1 EP 0326975A1 EP 89101495 A EP89101495 A EP 89101495A EP 89101495 A EP89101495 A EP 89101495A EP 0326975 A1 EP0326975 A1 EP 0326975A1
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- European Patent Office
- Prior art keywords
- lubricant
- lubricant according
- mol
- amine
- aliphatic
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M101/00—Lubricating compositions characterised by the base-material being a mineral or fatty oil
- C10M101/02—Petroleum fractions
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/02—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation
- C10M107/08—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation containing butene
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
- C10M137/12—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having a phosphorus-to-carbon bond
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
- C10M137/12—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having a phosphorus-to-carbon bond
- C10M137/14—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having a phosphorus-to-carbon bond containing sulfur
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/02—Well-defined aliphatic compounds
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/02—Well-defined aliphatic compounds
- C10M2203/022—Well-defined aliphatic compounds saturated
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/02—Well-defined aliphatic compounds
- C10M2203/024—Well-defined aliphatic compounds unsaturated
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/04—Well-defined cycloaliphatic compounds
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- 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
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- 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
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/102—Aliphatic fractions
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/102—Aliphatic fractions
- C10M2203/1025—Aliphatic fractions used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- 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
- C10M2203/104—Aromatic fractions
- C10M2203/1045—Aromatic fractions used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- 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
- C10M2203/106—Naphthenic fractions
- C10M2203/1065—Naphthenic fractions used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- 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
- C10M2203/108—Residual fractions, e.g. bright stocks
- C10M2203/1085—Residual fractions, e.g. bright stocks used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- 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
- C10M2205/026—Butene
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- 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
- C10M2205/026—Butene
- C10M2205/0265—Butene used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/06—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having phosphorus-to-carbon bonds
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/06—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having phosphorus-to-carbon bonds
- C10M2223/061—Metal salts
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/06—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having phosphorus-to-carbon bonds
- C10M2223/063—Ammonium or amine salts
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/06—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having phosphorus-to-carbon bonds
- C10M2223/065—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having phosphorus-to-carbon bonds containing sulfur
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/02—Bearings
Definitions
- the present invention relates to a lubricant for transmissions with continuously variable power transmission. It is particularly suitable for pull chain transmissions.
- a well-known push chain transmission is, for example, the CVT transmission with Van Doorne push link belt. (Drive technology 26, (1987) No. 8, pages 47-52).
- the lubricant is of great importance for pull and push chain gearboxes. It should not only have a good lubricating effect in order to keep the wear on the chains low, but it must also have a certain coefficient of friction in order to enable the power transmission. The coefficient of friction must be higher than with conventional lubricating oils, but not as high as with so-called traction fluids.
- DE-OS 31 27 970 discloses a lubricant which consists of a hydrocarbon oil which contains 19-30 hydrocarbon atoms and 3 six-membered carbocyclic rings.
- DE-OS 33 21 773 describes a lubricant which contains decalin rings connected by carbon bridges.
- DE-OS 33 37 503 discloses a lubricant from the same applicant which also contains hydrogenated condensed aromatics.
- Phosphetane derivatives as an additive to conventional lubricants are disclosed in DE-OS 27 15 529.
- a lubricant which is excellently suitable for transmissions with continuously variable power transmission, in particular pull chain transmissions, is characterized in that it contains 10 to 80% by weight of naphthenic hydrocarbons, 80 to 10% by weight of polyisobutene with a degree of polymerization of mol% 200 to 10,000, preferably moles by weight, 300 to 6000 and an additive of at least one phosphetane derivative of the general formula in an amount of 3 x 10 ⁇ 6 mol to 1 x 10 ⁇ 2 mol, preferably 1.5 x 10 ⁇ 5 to 5 x 10 ⁇ 3 mol and particularly preferably 3 x 10 ⁇ 5 - 3 x 10 ⁇ 3 mol based on 100 g of lubricant, where R1, R2, R3 and R4, H, can be linear, branched and ring-shaped saturated C1-C4 hydrocarbon radicals, X1, X2 and X3 are independently O or S. n if X1 is O, 1 and if X1
- X1 S n 1 - 2 X2 and X3 O and Z is a primary, secondary or tertiary amine of the formula N R5 R6 R7, wherein R5 and R6 independently of one another are hydrogen or an aliphatic or aromatic radical and R7 is an aliphatic or aromatic radical.
- the naphthenic component is a highly refined or fully hydrated product. Such products are available on the market. Of course, they can also be produced by refining in our own plants.
- polyisobutene component can be found on the market be a valid product.
- the naphthenic component is contained in the lubricant in a concentration of 10 to 80% by weight, preferably 15 to 50% by weight.
- the polyisobutene component is present in the lubricant in a concentration of 10 to 80% by weight, preferably 40 to 70% by weight.
- the groups on the four-membered ring R1, R2, R3 and R4 of the phosphetane derivative can be the same or different. They are preferably H, but can also be C1 - C4 hydrocarbon radicals, which can be branched, ring-shaped and straight-chain, wherein X1, X2 and X3 are independently O or S. n if X1 is O, 1 and if X1 is S, 1-6 means Z is a mono- or polyvalent nitrogen-containing oil-soluble organic base, m is 1 - 2 and p means 1-2.
- X1 S n 1 - 2 X2 and X3 O and Z is a primary, secondary or tertiary amine of the formula N R5 R6 R7, wherein R5 and R6 independently of one another are hydrogen or an aliphatic or aromatic radical and R7 is an aliphatic or aromatic radical.
- any mono- or divalent organic nitrogen base can be used as the base for salt formation with the 1,3-thiaphosphetanes.
- oil-soluble nitrogen bases are suitable for use in lubricants, and in particular those with a total C number of 6-40 C atoms.
- Monovalent compounds are preferably used as oil-soluble organic nitrogen bases, and in particular primary, secondary or tertiary amines of the formula R5 R6NR7, where R5 and R6 independently of one another are hydrogen or an aliphatic or aromatic radical, and R7 is an aliphatic or aromatic radical.
- R5, R6 and R7 are an aliphatic radical, it may be branched or straight-chain alkyl which may be interrupted with O and / or S, such as methyl, ethyl, n-propyl, isopropyl, t-butyl, amyl, hexyl, 1-methylpentyl , t-oxyl, 2-ethyl-hexyl, n-decyl, 2-ethyl-decyl, n-tetradecyl, n-octadecyl, n-eicosyl, 2,7,8-trimethyl-decyl, 4-isobutyl-2,5 -dimethyl-heptyl, octacosoyl, dotriacontyl, hexatriacontyl or tetracontyl.
- O and / or S such as methyl, ethyl, n-propyl, iso
- R5, R6 and R7 can also be an aliphatic radical which may be interrupted with O or S, branched or straight-chain alkenyl such as allyl, vinyl, 2-butenyl, 2-hexenyl, 2-dodecenyl or 2-hexatriacontenyl.
- the total C number of the radicals R5, R6 and R7 should be 6 to 40.
- the amino group can optionally also be ethoxylated, the degree of ethoxylation having to be matched to the desired oil solubility of the product.
- R5, R6 and R7 represent an aromatic radical, this is a phenyl group which is optionally substituted by alkyl groups each having 1 to 12 carbon atoms, such as methyl, ethyl, propyl, butyl, hexyl, oxyl, decyl or dodecyl.
- organic nitrogen bases of the formula R5 R6NR7 to be used are those in which R5 and R6 independently of one another are hydrogen or an aliphatic radical, and R7 is a phenyl group which is optionally substituted by alkyl groups.
- primary organic nitrogen bases of the formula H2NR8 are particularly preferably used, in which R8 is optionally interrupted by O or S, branched or straight-chain alkyl or alkenyl each having 6 to 40, and in particular each having 8 to 24, carbon atoms.
- mixtures of different nitrogen bases are often used, e.g. Primene 81-R (mixture of primary C12-C15 t-alkylamines, from Rohm and Haas, USA).
- the salts which have a uniform nitrogen component are equally suitable.
- phosphetane compounds according to the invention are:
- a specific one or several of the mentioned phophetane derivatives can be used.
- the lubricant according to the invention has been carefully tested in numerous tests both in the CVT transmission test bench and in the vehicle.
- the test gear was filled with approx. 5 L test oil before each start of the test.
- the start-up cycle was chosen so that the chain and tapered pulleys were subjected to the highest possible load through constant adjustment, standstill adjustment and correspondingly high sliding components. Transferred to a vehicle, the clutch was started at medium engine speed and medium engine torque and quickly accelerated to a driving speed of approx. 120 km / h. Then the brakes were applied fully and the converter ratio was reset to the starting gear at the same time.
- the evaluation criteria for the quality of the lubricant used were the closure on the weighing pressure pieces used, the formation of gray spots on the conical disks and the coefficient of friction.
- a typical lubricant formulation contained the following components: Polyisobutene 65 % By weight Naphthenic oil 20th " Phosphetane derivative 0.03 " + other additives 14.97 “ namely viscosity improvers such as, for example, polymethacrylates, anti-foaming agents, anti-corrosion agents and antioxidants, for example of the phenol and / or amine type.
- wear protection additives e.g. phosphorus and / or sulfur based.
- Table 3 shows for samples a - c that due to the very low levels of Cu and Fe and the negligible increases in these metals, the additives ensure excellent wear protection. Oil change intervals can therefore be easily extended to over 40,000 km.
- the levels were up Pb, Si, Mn, Mo, Ca, Zn, Ni, Al, Cr, B, P, Mg, Ba and Sn tested. No changes were found in these elements compared to the reserve sample (original sample).
- composition of the lubricant was varied within the limits specified, with numerous phosphetane derivatives being added in the disclosed amount ranges, which were prepared according to DE-OS 27 15 529 and the literature cited therein. Similar good test results were obtained.
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Lubricants (AREA)
- General Details Of Gearings (AREA)
- Friction Gearing (AREA)
- Gears, Cams (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft ein Schmiermittel für Getriebe mit stufenloser Kraftübertragung. Es ist besonders geeignet für Zugkettengetriebe.The present invention relates to a lubricant for transmissions with continuously variable power transmission. It is particularly suitable for pull chain transmissions.
Es ist dem Fachmann bekannt, daß Getriebe mit stufenloser Kraftübertragung (CVT-Getriebe, Continuously Variable Transmission) an Bedeutung gewinnen, da Kraftfahrzeuge mit solchen Getrieben einen sehr guten Wirkungsgrad, geringe Geräuschentwicklung und geringen Kraftstoffverbrauch besitzen. Wie bei konventionellen automatischen Getrieben erübrigt sich das Schalten.It is known to the person skilled in the art that transmissions with continuously variable transmission (CVT transmission, Continuously Variable Transmission) are gaining importance, since motor vehicles with such transmissions have very good efficiency, low noise and low fuel consumption. As with conventional automatic transmissions, shifting is not necessary.
Man unterscheidet zwischen Schubkettengetrieben und Zugkettengetrieben.
Ein bekanntes Schubkettengetriebe ist beispielsweise das CVT-Getriebe mit Van-Doorne-Schubgliederband. (Antriebstechnik 26, (1987) Nr. 8, Seite 47 -52).A distinction is made between push chain drives and pull chain drives.
A well-known push chain transmission is, for example, the CVT transmission with Van Doorne push link belt. (Drive technology 26, (1987) No. 8, pages 47-52).
Für Zug- und Schubkettengetriebe ist das Schmiermittel von sehr großer Bedeutung. Es soll nicht nur gute Schmierwirkung besitzen, um den Verschleiß an den Ketten gering zu halten, sondern es muß zusätzlich eine bestimmte Reibungszahl besitzen, um die Kraftübertragung zu ermöglichen. Die Reibungszahl muß höher als bei konventionellen Schmierölen sein, jedoch nicht so hoch wie bei sog. Traktionfluids.The lubricant is of great importance for pull and push chain gearboxes. It should not only have a good lubricating effect in order to keep the wear on the chains low, but it must also have a certain coefficient of friction in order to enable the power transmission. The coefficient of friction must be higher than with conventional lubricating oils, but not as high as with so-called traction fluids.
Bei letzerem ist eine möglichst hohe Reibungszahl erwünscht, da die Aufgabenstellung, gleichzeitig Kettenglieder zu schmieren, entfällt. Es laufen vielmehr Scheiben oder Rollen aufeinander, deren "Schlupf" so klein wie möglich sein soll. Ist die Umdrehungsgeschwindigkeit eines Körpers V1 und die des anderen V2, so ist der Schlupfwert als
definiert.In the latter, the highest possible coefficient of friction is desirable, since the task of lubricating chain links at the same time is eliminated. Rather, discs or rollers run on each other, the "slip" of which should be as small as possible. If the rotational speed of one body is V1 and that of the other V2, the slip value is as
Are defined.
Schmiermittel für Zugkettengetriebe sind in der Literatur bereits beschrieben.
So offenbart DE-OS 31 27 970 ein Schmiermittel das aus einem Kohlenwasserstofföl besteht, das 19 - 30 Kohlenwasserstoffatome enthält sowie 3 sechsgliedrige carbocyclische Ringe.Lubricants for pull chain transmissions have already been described in the literature.
For example, DE-OS 31 27 970 discloses a lubricant which consists of a hydrocarbon oil which contains 19-30 hydrocarbon atoms and 3 six-membered carbocyclic rings.
In DE-OS 33 21 773 ist ein Schmiermittel beschrieben, das durch Kohlenstoffbrücken verbundene Dekalinringe enthält.DE-OS 33 21 773 describes a lubricant which contains decalin rings connected by carbon bridges.
IN DE-OS 33 37 503 ist von der gleichen Anmelderin ein Schmiermittel offenbart, das ebenfalls hydrierte kondensierte Aromaten enthält.DE-OS 33 37 503 discloses a lubricant from the same applicant which also contains hydrogenated condensed aromatics.
Phosphetanderivate als Zusatz zu üblichen Schmiermitteln sind in DE-OS 27 15 529 offenbart.Phosphetane derivatives as an additive to conventional lubricants are disclosed in DE-OS 27 15 529.
Die Anmelderin hat nunmehr überraschend gefunden, daß ein für Getriebe mit stufenloser Kraftübertragung insbesondere Zugkettengetriebe hervorragend geeignetes Schmiermittel dadurch gekennzeichnet ist, daß es 10 bis 80 Gew.-% naphthenische Kohlenwasserstoffe enthält, 80 bis 10 Gew.-% Polyisobuten mit einem Polymerisationsgrad von Mol Gew. 200 bis 10.000, bevorzugt Mol Gew. 300 bis 6000 und ein Additiv aus wenigstens einem Phosphetanderivat der allgemeinen Formel
n falls X₁ O ist, 1 und falls X₁ S ist, 1 - 2 bedeutet,
Z eine ein- oder mehrwertige stickstoffhaltige öllösliche organische Base ist,
m 1 - 2 ist und
p 1 - 2 bedeutet.The applicant has now surprisingly found that a lubricant which is excellently suitable for transmissions with continuously variable power transmission, in particular pull chain transmissions, is characterized in that it contains 10 to 80% by weight of naphthenic hydrocarbons, 80 to 10% by weight of polyisobutene with a degree of polymerization of mol% 200 to 10,000, preferably moles by weight, 300 to 6000 and an additive of at least one phosphetane derivative of the general formula
n if X₁ is O, 1 and if X₁ is S, means 1-2,
Z is a mono- or polyvalent nitrogen-containing oil-soluble organic base,
m is 1 - 2 and
p means 1-2.
Bevorzugt bedeutet
X₁ S
n 1 - 2
X₂ und X₃ O und
Z ein primäres, sekundäres oder tertiäres Amin der Formel N R₅ R₆ R₇, worin R₅ und R₆ unabhängig voneinander Wasserstoff oder einen aliphatischen oder aromatischen Rest und R₇ einen aliphatischen oder aromatischen Rest bedeuten.Preferably means
X₁ S
n 1 - 2
X₂ and X₃ O and
Z is a primary, secondary or tertiary amine of the formula N R₅ R₆ R₇, wherein R₅ and R₆ independently of one another are hydrogen or an aliphatic or aromatic radical and R₇ is an aliphatic or aromatic radical.
Besonders bevorzugt bedeutet
X₁ S
n 1
X₂ und X₃ O und
Z ein primäres Amin der Formel H₂ N R₈, worin R₈ einen aliphatischen Rest bedeutet und
m = 1Means particularly preferred
X₁ S
n 1
X₂ and X₃ O and
Z is a primary amine of the formula H₂N R₈, where R₈ is an aliphatic radical and
m = 1
Bei der naphthenischen Komponente handelt es sich um ein hoch ausraffiniertes bzw. durchhydriertes Produkt. Solche Produkte sind auf dem Market erhältlich. Sie können natürlich auch durch Raffination in eigenen Anlagen erzeugt werden.The naphthenic component is a highly refined or fully hydrated product. Such products are available on the market. Of course, they can also be produced by refining in our own plants.
Ebenso kann die Polyisobuten-Komponente ein auf dem Markt er hältliches Produkt sein.Likewise, the polyisobutene component can be found on the market be a valid product.
Die naphthenische Komponente ist in dem Schmiermittel in einer Konzentration von 10 bis 80 Gew.-%, bevorzugt von 15 bis 50 Gew.-% enthalten.The naphthenic component is contained in the lubricant in a concentration of 10 to 80% by weight, preferably 15 to 50% by weight.
Die Polyisobuten-Komponente ist in einer Konzentration von 10 bis 80 Gew.-% im Schmiermittel enthalten, bevorzugt von 40 bis 70 Gew.-%.The polyisobutene component is present in the lubricant in a concentration of 10 to 80% by weight, preferably 40 to 70% by weight.
Die Gruppen am viergliedrigen Ring R₁, R₂, R₃ und R₄ des Phosphetanderivats können gleich oder unterschiedlich sein. Sie sind bevorzugt H, können jedoch auch C₁ - C₄-Kohlenwasserstoffreste sein, die verzweigt, ringförmig und geradkettig sein können, wobei
X₁, X₂ und X₃ unabhängig voneinander O oder S bedeuten
n falls X₁ O ist, 1 und falls X₁ S ist, 1 - 6 bedeutet,
Z eine ein- oder mehrwertige stickstoffhaltige öllösliche organische Base ist,
m 1 - 2 ist und
p 1 - 2 bedeutet.The groups on the four-membered ring R₁, R₂, R₃ and R₄ of the phosphetane derivative can be the same or different. They are preferably H, but can also be C₁ - C₄ hydrocarbon radicals, which can be branched, ring-shaped and straight-chain, wherein
X₁, X₂ and X₃ are independently O or S.
n if X₁ is O, 1 and if X₁ is S, 1-6 means
Z is a mono- or polyvalent nitrogen-containing oil-soluble organic base,
m is 1 - 2 and
p means 1-2.
Bevorzugt bedeutet
X₁ S
n 1 - 2
X₂ und X₃ O und
Z ein primäres, sekundäres oder tertiäres Amin der Formel N R₅ R₆ R₇ , worin R₅ und R₆ unabhängig voneinander Wasserstoff oder einen aliphatischen oder aromatischen Rest und R₇ einen aliphatischen oder aromatischen Rest bedeuten.Preferably means
X₁ S
n 1 - 2
X₂ and X₃ O and
Z is a primary, secondary or tertiary amine of the formula N R₅ R₆ R₇, wherein R₅ and R₆ independently of one another are hydrogen or an aliphatic or aromatic radical and R₇ is an aliphatic or aromatic radical.
Besonders bevorzugt bedeuten
X₁ S
n 1
X₂ und X₃ O und
Z ein primäres Amin der Formel H₂ N R₃ ist, worin R₃ einen aliphatischen Rest bedeutet und
m = 1Mean particularly preferred
X₁ S
n 1
X₂ and X₃ O and
Z is a primary amine of the formula H₂N R₃, wherein R₃ is an aliphatic radical and
m = 1
Als Base für die Salzbildung mit den 1,3-Thiaphosphetanen kann grundsätzlich jede ein- oder zweiwertige organische Stickstoffbase verwendet werden. Aus praktischen Gründen eignen sich für die Anwendung in Schmiermitteln nur öllösliche Stickstoffbasen und insbesondere solche mit einer Gesamt-C-Zahl von 6-40 C-Atomen.In principle, any mono- or divalent organic nitrogen base can be used as the base for salt formation with the 1,3-thiaphosphetanes. For practical reasons, only oil-soluble nitrogen bases are suitable for use in lubricants, and in particular those with a total C number of 6-40 C atoms.
Bevorzugt werden als öllösliche organische Stickstoffbasen einwertige Verbindungen eingesetzt, und insbesondere primäre, sekundäre oder tertiäre Amine der Formel R₅ R₆NR₇, worin R₅ und R₆ unabhängig voneinander Wasserstoff oder einen aliphatischen oder aromatischen Rest, und R₇ einen aliphatischen oder aromatischen Rest bedeuten.Monovalent compounds are preferably used as oil-soluble organic nitrogen bases, and in particular primary, secondary or tertiary amines of the formula R₅ R₆NR₇, where R₅ and R₆ independently of one another are hydrogen or an aliphatic or aromatic radical, and R₇ is an aliphatic or aromatic radical.
Bedeuten R₅, R₆ und R₇ einen aliphatischen Rest, so kann es sich dabei um gegebenenfalls mit O und/oder S unterbrochenes verzweigtes oder geradkettiges Alkyl wie Methyl, Aethyl, n-Propyl, Isopropyl, t-Butyl, Amyl, Hexyl, 1-Methylpentyl, t-Oxtyl, 2-Aethyl-hexyl, n-Decyl, 2-Aethyl-decyl, n-Tetradecyl, n-Octadecyl, n-Eicosyl, 2,7,8-Trimethyl-decyl, 4-Isobutyl-2,5-dimethyl-heptyl, Octacosoyl, Dotriacontyl, Hexatriacontyl oder Tetracontyl handeln. R₅, R₆ und R₇ können jedoch als aliphatischer Rest auch gegebenenfalls mit O oder S unterbrochenes, verzweigtes oder geradkettiges Alkenyl wie Allyl, Vinyl, 2-Butenyl, 2-Hexenyl, 2-Dodecenyl oder 2-Hexatriacontenyl sein. Die Gesamt C-Zahl der Reste R₅, R₆ und R₇ soll dabei 6 bis 40 betragen.If R₅, R₆ and R₇ are an aliphatic radical, it may be branched or straight-chain alkyl which may be interrupted with O and / or S, such as methyl, ethyl, n-propyl, isopropyl, t-butyl, amyl, hexyl, 1-methylpentyl , t-oxyl, 2-ethyl-hexyl, n-decyl, 2-ethyl-decyl, n-tetradecyl, n-octadecyl, n-eicosyl, 2,7,8-trimethyl-decyl, 4-isobutyl-2,5 -dimethyl-heptyl, octacosoyl, dotriacontyl, hexatriacontyl or tetracontyl. However, R₅, R₆ and R₇ can also be an aliphatic radical which may be interrupted with O or S, branched or straight-chain alkenyl such as allyl, vinyl, 2-butenyl, 2-hexenyl, 2-dodecenyl or 2-hexatriacontenyl. The total C number of the radicals R₅, R₆ and R₇ should be 6 to 40.
Die Aminogruppe kann gegebenenfalls auch äthoxyliert sein, wobei der Aethoxylierungsgrad auf die angestrebte Öllöslichkeit des Produktes abgestimmt werden muß.The amino group can optionally also be ethoxylated, the degree of ethoxylation having to be matched to the desired oil solubility of the product.
Bedeuten R₅, R₆ und R₇ einen aromatischen Rest, so handelt es sich dabei um eine gegebenenfalls durch Alkylgruppen mit je 1 bis 12 C-Atomen wie Methyl, Aethyl, Propyl, Butyl, Hexyl, Oxtyl, Decyl oder Dodecyl substituierte Phenylgruppe.If R₅, R₆ and R₇ represent an aromatic radical, this is a phenyl group which is optionally substituted by alkyl groups each having 1 to 12 carbon atoms, such as methyl, ethyl, propyl, butyl, hexyl, oxyl, decyl or dodecyl.
Unter den zu verwendenden organischen Stickstoffbasen der Formel R₅ R₆NR₇ sind solche zu nennen, in den R₅ und R₆ unabhängig voneinander Wasserstoff oder einen aliphatischen Rest bedeuten, und R₇ eine gegebenenfalls durch Alkylgruppen substituierte Phenylgruppe bedeutet.Among the organic nitrogen bases of the formula R₅ R₆NR₇ to be used are those in which R₅ and R₆ independently of one another are hydrogen or an aliphatic radical, and R₇ is a phenyl group which is optionally substituted by alkyl groups.
Besonders bevorzugt werden jedoch primäre organische Stickstoffbasen der Formel H₂NR₈ eingesetzt, worin R₈ gegebenenfalls durch O oder S unterbrochenes, verzweigtes oder geradkettiges Alkyl oder Alkenyl mit je 6 bis 40, und insbesondere mit je 8 bis 24 C-Atomen bedeutet.However, primary organic nitrogen bases of the formula H₂NR₈ are particularly preferably used, in which R₈ is optionally interrupted by O or S, branched or straight-chain alkyl or alkenyl each having 6 to 40, and in particular each having 8 to 24, carbon atoms.
In der Praxis werden oft Gemische von verschiedenen Stickstoffbasen eingesetzt, wie z.B. Primene 81-R (Gemisch primärer C₁₂-C₁₅ t-Alkylamine, von Rohm und Haas, USA). Ebensogut eignen sich jedoch auch die Salze welche eine einheitliche Stickstoffkomponente besitzen.In practice, mixtures of different nitrogen bases are often used, e.g. Primene 81-R (mixture of primary C₁₂-C₁₅ t-alkylamines, from Rohm and Haas, USA). However, the salts which have a uniform nitrogen component are equally suitable.
Methylamin, Aethylamin, Propylamin, Butylamin, t-Butylamin, Hexylamin, Oxtylamin, (2-Aethylhexyl)amin, t-Octylamin, Decylamin, t-Dodecylamin, Tetradecylamin, Octadecylamin, Phenylamin, Benzylamin, (Nonylphenyl)amin, Cyclohexylamin, Pyridin, Piperidin, Dimethylamin, Methyloctylamin, Didodecylamin, Methyloctadecylamin, Methylcyclohexylamin, Phenyloctylamin, Trimethylamin, Dimethylcyclohexylamin, Methyloctyldecylamin, (Octoxyäthyl)amin, (Octylthioäthyl)amin, (t-Dodecylthioäthyl)- amin, Dodecyl-dimethylamin, Hexadecyl-dimethylamin, Decyldimethyl-amin, Didodecylmethyl-amin, Methyl-butyl-dodecyl-amin, Dimethyl-propylamin, Trioctyl-amin, Dioctyl-methylamin, Dodecylbenzyl-methyl-amin, Nonylphenyl-dimethylamin, Phenyl-dodecyl-methyl-amin, Phenyl-dimethyl-amin, Phenyl-dimethyl-amin, Allyl-dibutyl-amin, Methyl-dodecyl-amin, heptadecyl-dimethyl-amin, Dioctyl-methyl-amin, Methyl-α-naphthyl-phenyl-amin, Cyclohexyl-dimethyl-amin, Nonyl-dimethyl-amin, Tris(n-tridecyl)amin, Tris(n-dodecyl)-amin, Tris(isooctyl)amin, Methylbutylhexadecyl-amin, Tri-äthyl-amin, 3,5-Dimethyl-pyridin, 2-(Aethylhexyl)-methyl-dodecyl-amin, (Methyläthyl)-didecyl-amin, Methyl-butyl-dodecyl-amin, Dimethyl-dodecyl-amin, Hexadecyl-dimethyl-amin, Tris(i-dodecyl)-amin, Dimethyl-benzyl-amin, Dimethyl-(tert.-octylphenyl)-amin, (N-Methyl)-1-imidazolin (N-Methyl)-1-pyrrazolin, Oxazolin, Chinolin, Pyrrolidin, N-Aethyl-pyrrolidin, N-Methyl-piperidin, N-Butyl-piperidin, N-Butyl-piperidin, Thiazol, N-Methyl-phenothiamin.Methylamine, ethylamine, propylamine, butylamine, t-butylamine, hexylamine, oxylamine, (2-ethylhexyl) amine, t-octylamine, decylamine, t-dodecylamine, tetradecylamine, octadecylamine, phenylamine, benzylamine, (nonylphenyl) amine, cyclohexylamine, pyridine Piperidine, dimethylamine, methyloctylamine, didodecylamine, methyloctadecylamine, methylcyclohexylamine, phenyloctylamine, trimethylamine, dimethylcyclohexylamine, methyloctyldecylamine, (octoxyethyl) amine, (octylthioethyl) amine, (t-dodecylthioethyl) - amine, dodecyldimethylamine, hexadecyldimethylamine, decyldimethylamine, didodecylmethylamine, methylbutyldodecylamine, dimethylpropylamine, trioctylamine, dioctylmethylamine, dodecylbenzylmethylamine, nonylphenyldimethylamine dodecyl-methyl-amine, phenyl-dimethyl-amine, phenyl-dimethyl-amine, allyl-dibutyl-amine, methyl-dodecyl-amine, heptadecyl-dimethyl-amine, dioctyl-methyl-amine, methyl-α-naphthyl-phenyl- amine, cyclohexyl-dimethyl-amine, nonyl-dimethyl-amine, tris (n-tridecyl) amine, tris (n-dodecyl) amine, tris (isooctyl) amine, methylbutylhexadecyl-amine, tri-ethyl-amine, 3.5 -Dimethyl-pyridine, 2- (ethylhexyl) -methyl-dodecyl-amine, (methylethyl) -didecyl-amine, methyl-butyl-dodecyl-amine, dimethyl-dodecyl-amine, hexadecyl-dimethyl-amine, tris (i-dodecyl ) amine, dimethyl benzyl amine, dimethyl (tert-octylphenyl) amine, (N-methyl) -1-imidazoline (N-methyl) -1-pyrrazoline, oxazoline, quinoline, pyrrolidine, N-ethyl pyrrolidine, N-methyl-piperidine, N-butyl-piperidine, N-butyl-piperidine, thiazole, N-methyl-phe nothiamin.
Dodecylammoniumsalz des 3-Hydroxy-3-oxo-1,3-thiaphosphetans
Di-n-butylammoniumsalz des 3-Mercapto-3-thio-1,3-thiaphosphetans
Tri-n-octylammoniumsalz des 3-Hydroxy-3-oxo-1,3-thiaphosphetans
(2,6-di-tert.-butyl-phenyl)-ammoniumsalz des 3-Mercapto-3-oxo-1,3-oxaphosphetans
(2,6-Diäthyl-phenyl)-diäthylammoniumsalz des 3-Hydroxy-3-oxo-1,3-thiaphosphetans
Tri-n-nonyl-ammoniumsalz des 3-Hydroxy-3-oxo-1,3-oxaphosphetans
Di-(2-äthyl-hexyl)-ammoniumsalz des 3-Hydroxy-3-oxo-1,3-thiaphosphetans.Dodecylammonium salt of 3-hydroxy-3-oxo-1,3-thiaphosphetane
Di-n-butylammonium salt of 3-mercapto-3-thio-1,3-thiaphosphetane
Tri-n-octylammonium salt of 3-hydroxy-3-oxo-1,3-thiaphosphetane
(2,6-di-tert-butyl-phenyl) ammonium salt of 3-mercapto-3-oxo-1,3-oxaphosphetane
(2,6-diethyl-phenyl) -diethylammonium salt of 3-hydroxy-3-oxo-1,3-thiaphosphetane
Tri-n-nonyl ammonium salt of 3-hydroxy-3-oxo-1,3-oxaphosphetane
Di- (2-ethyl-hexyl) ammonium salt of 3-hydroxy-3-oxo-1,3-thiaphosphetane.
Es kann ein bestimmtes oder es können mehrere der genannten Phophetanderivate eingesetzt werden.A specific one or several of the mentioned phophetane derivatives can be used.
Die Untersuchungen der Anmelderin haben überraschend ergeben, daß der Verschleiß an den Ketten durch die erfindungsgemäßen Phosphetanderivate sehr stark herabgesetzt wird, so daß ein Schmiermittel erhalten wird, das sowohl die erwünschte Reibungszahl als auch einen geringen Kettenverschleiß ergibt.The investigations by the applicant have surprisingly shown that the wear on the chains is reduced very greatly by the phosphetane derivatives according to the invention, so that a lubricant is obtained which gives both the desired coefficient of friction and low chain wear.
Das erfindungsgemäße Schmiermittel wurde sowohl im CVT-Getriebeprüfstand als auch im Fahrzeug in zahlreichen Tests sorgfältig geprüft.
Das Versuchsgetriebe wurde vor jedem Versuchsbeginn mit ca. 5 L Versuchsöl gefüllt.The lubricant according to the invention has been carefully tested in numerous tests both in the CVT transmission test bench and in the vehicle.
The test gear was filled with approx. 5 L test oil before each start of the test.
Zwischen den Versuchen erfolgte eine gründliche Reinigung und anschließendes Spülen mit ca. 1,5 L des neuen Versuchs-Schmieröls.Between the tests, thorough cleaning followed by rinsing with approx. 1.5 L of the new test lubricating oil.
Nach jeweils 3000 KWh (entsprechend 12.000 km Prüflauf) wurden zur Untersuchung 50 ml Schmiermittel entnommen und dieselbe Menge Frischöl nachgefüllt.
Jeder Anfahrzyklus dauerte knapp 1 Minute, entsprechend etwa einer Fahrstrecke von 1 km.
Es wurden Versuche mit Fahrstrecken von 12.000, 24.000 und 38.000 km durchgeführt.After every 3000 KWh (corresponding to 12,000 km test run), 50 ml of lubricant were removed for testing and the same amount of fresh oil was added.
Each start-up cycle lasted almost 1 minute, corresponding to a distance of 1 km.
Tests were carried out with distances of 12,000, 24,000 and 38,000 km.
Der Anfahrzyklus wurde so gewählt, daß Kette und Kegelscheiben der höchstmöglichen Belastung durch ständige Verstellung, Stillstandsverstellung und dementsprechend hohe Gleitanteile ausgesetzt waren.
Übertragen auf ein Fahrzeug wurde bei springender Kupplung bei mittlerer Motordrehzahl und mittlerem Motorennennmoment angefahren und schnell auf eine Fahrgeschwindigkeit von ca. 120 km/h beschleunigt. Dann erfolgte eine Vollbremsung bei gleichzeitiger Rückverstellung der Wandlerübersetzung in den Anfahrgang.The start-up cycle was chosen so that the chain and tapered pulleys were subjected to the highest possible load through constant adjustment, standstill adjustment and correspondingly high sliding components.
Transferred to a vehicle, the clutch was started at medium engine speed and medium engine torque and quickly accelerated to a driving speed of approx. 120 km / h. Then the brakes were applied fully and the converter ratio was reset to the starting gear at the same time.
Bewertungskriterien für die Qualität des eingesetzten Schmierstoffs war der Verschließ an den eingesetzten Wiegedruckstükken, die Bildung von Graufleckigkeit auf den Kegelscheiben und die Reibungszahl.The evaluation criteria for the quality of the lubricant used were the closure on the weighing pressure pieces used, the formation of gray spots on the conical disks and the coefficient of friction.
Eine typische Schmiermittel-Rezeptur enthielt folgende Komponenten:
Außerdem ist es vorteilhaft Verschleißschutzadditive z.B. auf Phosphor- und/oder Schwefelbasis einzusetzen.It is also advantageous to use wear protection additives e.g. phosphorus and / or sulfur based.
Als Additive können auf dem Markt erhältliche, jedoch auch sonstige Produkte eingesetzt werden.However, other products available on the market can also be used as additives.
Als Phosphetan wurde
Folgende Ergebnisse wurden erhalten:
Die Tabelle zeigt, daß bei optimaler Reibungszahl eine überraschende Verschleißverminderung im Falle des erfindungsgemäßen Musters III eintritt.
Ohne Zusatz des Phosphetans ergibt das der Formulierung des Musters III entsprechende Muster IV jedoch weder eine brauchbare Verschleißzahl noch eine brauchbare Reinbungszahl.The table shows that with an optimal coefficient of friction there is a surprising reduction in wear in the case of the pattern III according to the invention.
Without the addition of the phosphetane, however, the pattern IV corresponding to the formulation of pattern III neither gives a usable wear number nor a usable cleaning number.
keine Graufleckigkeit.no gray spots.
Es wurden 3 Proben mit Kilometerleistungen von
- a, 13.000 km
- b, 25.000 km und
- c, 38.000 km
- a, 13,000 km
- b, 25,000 km and
- c, 38,000 km
Aus den Ergebnissen geht hervor, daß das erfindungsgemäße Schmiermittel eine ausgezeichnete Scherstabilität besitzt. Aus Neutralisationszahl und Verseifungszahl geht ferner hervor, daß auch die Ölalterung als sehr gering anzusehen ist.
Aus Tabelle 3 geht bei den Proben a - c hervor, daß aufgrund der sehr geringen Gehalte an Cu und Fe und der vernachlässigbaren Zunahmen dieser Metalle, die Additivierung einen hervorragenden Verschleißschutz gewährleistet. Ölwechselintervalle können demgemäß ohne weiteres auf über 40.000 km verlängert werden.Table 3 shows for samples a - c that due to the very low levels of Cu and Fe and the negligible increases in these metals, the additives ensure excellent wear protection. Oil change intervals can therefore be easily extended to over 40,000 km.
Zusätzlich wurden die Gehalte an
Pb, Si, Mn, Mo, Ca, Zn, Ni, Al, Cr, B, P, Mg, Ba und Sn geprüft.
Bei diesen Elementen wurden gegenüber dem Rückstellmuster (Originalprobe) keine Änderungen festgestellt.In addition, the levels were up
Pb, Si, Mn, Mo, Ca, Zn, Ni, Al, Cr, B, P, Mg, Ba and Sn tested.
No changes were found in these elements compared to the reserve sample (original sample).
Die Zusammensetzung des Schmiermittels wurde in den Ansprüchen angegebenen Grenzen variiert, wobei zahlreiche Phosphetanderivate in den offenbarten Mengenbereichen zugesetzt wurden, die nach DE-OS 27 15 529 und der dort zitierten Literatur hergestellt wurden. Es wurden hierbei ähnlich gute Testergebnisse erhalten.The composition of the lubricant was varied within the limits specified, with numerous phosphetane derivatives being added in the disclosed amount ranges, which were prepared according to DE-OS 27 15 529 and the literature cited therein. Similar good test results were obtained.
Nur einige der untersuchten Schmiermittel-Mischungen sind in Tabelle 4 zusammengefaßt.
Claims (13)
X₁, X₂ und X₃ unabhängig voneinander O oder S bedeuten,
n falls X₁ O ist, 1 und falls X₁ S ist, 1 - 6 bedeutet,
Z eine ein- oder mehrwertige stickstoffhaltige öllösliche organische Base ist,
m 1 - 2 ist und
p 1 - 2 bedeutet.
Bevorzugt bedeutet
X₁ S
n 1 - 2
X₂ und X₃ O wobei
Z ein primäres, sekundäres oder tertiäres Amin der Formel N R₅ R₆ R₇ , worin R₅ und R₆ unabhängig voneinander Wasserstoff oder einen aliphatischen oder aromatischen Rest und R₇ einen aliphatischen oder aromatischen Rest bedeuten.
Besonders bevorzugt bedeutet
X₁ S
n 1
X₂ und X₃ O und
Z ein primäres Amin der formel H₂ N R₈ worin R₈ einen aliphatischen Rest bedeutet und
m = 11. Lubricant, characterized in that it contains 10 to 80 wt .-% naphthenic hydrocarbons, 10 to 80 wt .-% polyisobutene with a degree of polymerization of mol. 200 to mol. 10,000 and an additive of at least one phosphetane derivative of the general formula
X₁, X₂ and X₃ are independently O or S,
n if X₁ is O, 1 and if X₁ is S, 1-6 means
Z is a mono- or polyvalent nitrogen-containing oil-soluble organic base,
m is 1 - 2 and
p means 1-2.
Preferably means
X₁ S
n 1 - 2
X₂ and X₃ O being
Z is a primary, secondary or tertiary amine of the formula N R₅ R₆ R₇, where R₅ and R₆ independently of one another are hydrogen or an aliphatic or aromatic radical and R₇ is an aliphatic or aromatic radical.
Means particularly preferred
X₁ S
n 1
X₂ and X₃ O and
Z is a primary amine of the formula H₂N R₈ wherein R₈ is an aliphatic radical and
m = 1
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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AT89101495T ATE65795T1 (en) | 1988-02-05 | 1989-01-28 | LUBRICANT FOR CONTINUOUSLY VARIABLE TRANSMISSION. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE3803399 | 1988-02-05 | ||
DE3803399 | 1988-02-05 |
Publications (2)
Publication Number | Publication Date |
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EP0326975A1 true EP0326975A1 (en) | 1989-08-09 |
EP0326975B1 EP0326975B1 (en) | 1991-07-31 |
Family
ID=6346664
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89101495A Expired - Lifetime EP0326975B1 (en) | 1988-02-05 | 1989-01-28 | Lubricant for traction drive with continuously variable transmission |
Country Status (7)
Country | Link |
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US (1) | US4950414A (en) |
EP (1) | EP0326975B1 (en) |
JP (1) | JPH02196895A (en) |
AT (1) | ATE65795T1 (en) |
DE (1) | DE58900194D1 (en) |
ES (1) | ES2010973B3 (en) |
GR (2) | GR890300198T1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2657088A1 (en) * | 1990-01-15 | 1991-07-19 | Bp France | Hydrosynthetic lubricating oil |
WO2004026998A1 (en) * | 2002-09-18 | 2004-04-01 | Idemitsu Kosan Co., Ltd. | Traction drive fluid compositions |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4456708B2 (en) * | 1999-12-28 | 2010-04-28 | 出光興産株式会社 | Lubricating oil composition containing cyclic organophosphorus compound |
IL141094A0 (en) * | 2001-01-25 | 2002-02-10 | Ran Siman Tov | Continuous variable transmission |
JP4910266B2 (en) * | 2004-03-01 | 2012-04-04 | 栗田工業株式会社 | Nitrification method and treatment method of ammonia-containing nitrogen water |
US7367913B2 (en) | 2005-02-11 | 2008-05-06 | Team Industries, Inc. | Wet brake system for vehicles |
US7754664B2 (en) * | 2006-09-19 | 2010-07-13 | Ut-Battelle, Llc | Lubricants or lubricant additives composed of ionic liquids containing ammonium cations |
US20140171348A1 (en) | 2012-12-14 | 2014-06-19 | Exxonmobil Research And Engineering Company | Ionic liquids as lubricating oil base stocks, cobase stocks and multifunctional functional fluids |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2245757A1 (en) * | 1973-10-01 | 1975-04-25 | Lubrizol Corp | |
DE2715529A1 (en) * | 1976-04-12 | 1977-10-20 | Ciba Geigy Ag | NEW LUBRICANT ADDITIVES |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2117323C3 (en) * | 1971-04-08 | 1978-08-31 | Robert Bosch Gmbh, 7000 Stuttgart | Temperature switch |
JPS4844301A (en) * | 1972-02-18 | 1973-06-26 | ||
US4670173A (en) * | 1985-12-19 | 1987-06-02 | The Lubrizol Corporation | Oil-soluble reaction products of an acylated reaction product, a polyamine, and mono-functional acid |
-
1989
- 1989-01-28 ES ES89101495T patent/ES2010973B3/en not_active Expired - Lifetime
- 1989-01-28 EP EP89101495A patent/EP0326975B1/en not_active Expired - Lifetime
- 1989-01-28 AT AT89101495T patent/ATE65795T1/en not_active IP Right Cessation
- 1989-01-28 DE DE8989101495T patent/DE58900194D1/en not_active Expired - Lifetime
- 1989-01-31 US US07/304,778 patent/US4950414A/en not_active Expired - Lifetime
- 1989-02-03 JP JP1024126A patent/JPH02196895A/en active Granted
-
1990
- 1990-10-31 GR GR89300198T patent/GR890300198T1/en unknown
-
1991
- 1991-10-16 GR GR91401546T patent/GR3002900T3/en unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2245757A1 (en) * | 1973-10-01 | 1975-04-25 | Lubrizol Corp | |
DE2715529A1 (en) * | 1976-04-12 | 1977-10-20 | Ciba Geigy Ag | NEW LUBRICANT ADDITIVES |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2657088A1 (en) * | 1990-01-15 | 1991-07-19 | Bp France | Hydrosynthetic lubricating oil |
WO2004026998A1 (en) * | 2002-09-18 | 2004-04-01 | Idemitsu Kosan Co., Ltd. | Traction drive fluid compositions |
US7956226B2 (en) | 2002-09-18 | 2011-06-07 | Idemitsu Kosan Co., Ltd | Traction drive fluid compositions |
Also Published As
Publication number | Publication date |
---|---|
EP0326975B1 (en) | 1991-07-31 |
DE58900194D1 (en) | 1991-09-05 |
GR890300198T1 (en) | 1990-10-31 |
US4950414A (en) | 1990-08-21 |
JPH02196895A (en) | 1990-08-03 |
ATE65795T1 (en) | 1991-08-15 |
ES2010973A4 (en) | 1989-12-16 |
ES2010973B3 (en) | 1992-03-16 |
GR3002900T3 (en) | 1993-01-25 |
JPH0588918B2 (en) | 1993-12-24 |
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