US20050034360A1 - Use of detergent additives in high-ethanol fuels for deposit control - Google Patents
Use of detergent additives in high-ethanol fuels for deposit control Download PDFInfo
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- US20050034360A1 US20050034360A1 US10/640,523 US64052303A US2005034360A1 US 20050034360 A1 US20050034360 A1 US 20050034360A1 US 64052303 A US64052303 A US 64052303A US 2005034360 A1 US2005034360 A1 US 2005034360A1
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- gasoline
- detergent
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N EtOH Substances CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 title claims abstract description 102
- 239000000446 fuel Substances 0.000 title claims abstract description 60
- 239000003599 detergent Substances 0.000 title claims abstract description 41
- 239000000654 additive Substances 0.000 title claims abstract description 23
- 238000002485 combustion reaction Methods 0.000 claims abstract description 36
- 230000000996 additive effect Effects 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 18
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 11
- 230000009467 reduction Effects 0.000 claims abstract description 9
- 229930003836 cresol Natural products 0.000 claims description 7
- 238000009835 boiling Methods 0.000 claims description 6
- QTWJRLJHJPIABL-UHFFFAOYSA-N 2-methylphenol;3-methylphenol;4-methylphenol Chemical compound CC1=CC=C(O)C=C1.CC1=CC=CC(O)=C1.CC1=CC=CC=C1O QTWJRLJHJPIABL-UHFFFAOYSA-N 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 229920002367 Polyisobutene Polymers 0.000 claims description 3
- 229930195733 hydrocarbon Natural products 0.000 claims description 3
- 150000002430 hydrocarbons Chemical class 0.000 claims description 3
- 230000001747 exhibiting effect Effects 0.000 abstract 1
- 235000019441 ethanol Nutrition 0.000 description 28
- 239000000306 component Substances 0.000 description 10
- 239000000126 substance Substances 0.000 description 10
- PDEDQSAFHNADLV-UHFFFAOYSA-M potassium;disodium;dinitrate;nitrite Chemical compound [Na+].[Na+].[K+].[O-]N=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O PDEDQSAFHNADLV-UHFFFAOYSA-M 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000004615 ingredient Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002816 fuel additive Substances 0.000 description 3
- 239000000376 reactant Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 description 2
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 150000001896 cresols Chemical class 0.000 description 2
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- LSHROXHEILXKHM-UHFFFAOYSA-N n'-[2-[2-[2-(2-aminoethylamino)ethylamino]ethylamino]ethyl]ethane-1,2-diamine Chemical compound NCCNCCNCCNCCNCCN LSHROXHEILXKHM-UHFFFAOYSA-N 0.000 description 2
- 229920001281 polyalkylene Polymers 0.000 description 2
- AOHJOMMDDJHIJH-UHFFFAOYSA-N propylenediamine Chemical compound CC(N)CN AOHJOMMDDJHIJH-UHFFFAOYSA-N 0.000 description 2
- FAGUFWYHJQFNRV-UHFFFAOYSA-N tetraethylenepentamine Chemical compound NCCNCCNCCNCCN FAGUFWYHJQFNRV-UHFFFAOYSA-N 0.000 description 2
- 238000000844 transformation Methods 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- PPWHTZKZQNXVAE-UHFFFAOYSA-N Tetracaine hydrochloride Chemical compound Cl.CCCCNC1=CC=C(C(=O)OCCN(C)C)C=C1 PPWHTZKZQNXVAE-UHFFFAOYSA-N 0.000 description 1
- 125000005233 alkylalcohol group Chemical group 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical group O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- -1 polybutylene Polymers 0.000 description 1
- 229920001748 polybutylene Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 239000012429 reaction media Substances 0.000 description 1
- 238000005067 remediation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000007655 standard test method Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/22—Organic compounds containing nitrogen
- C10L1/221—Organic compounds containing nitrogen compounds of uncertain formula; reaction products where mixtures of compounds are obtained
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L10/00—Use of additives to fuels or fires for particular purposes
- C10L10/04—Use of additives to fuels or fires for particular purposes for minimising corrosion or incrustation
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/18—Organic compounds containing oxygen
- C10L1/182—Organic compounds containing oxygen containing hydroxy groups; Salts thereof
- C10L1/1822—Organic compounds containing oxygen containing hydroxy groups; Salts thereof hydroxy group directly attached to (cyclo)aliphatic carbon atoms
- C10L1/1824—Organic compounds containing oxygen containing hydroxy groups; Salts thereof hydroxy group directly attached to (cyclo)aliphatic carbon atoms mono-hydroxy
Definitions
- the present invention relates to a method for controlling deposit formation on intake valves and combustion chambers in engines by combusting in the engine a fuel composition having a high ethanol content and a detergent additive.
- the invention also relates to a high ethanol content fuel containing a detergent in an amount effective for improving the reduction in valve deposits resulting from the combustion of the fuel.
- Additives for gasoline used in vehicles have been used for many years to improve the performance of the vehicle, reduce the emissions from the combustion of the fuel, and modify the physical and chemical properties of the fuel.
- One additive that has been used for many years is ethanol, or ethyl alcohol, and other oxygenates.
- ethanol or ethyl alcohol, and other oxygenates.
- the use of ethanol in a gasoline combusted in an internal combustion engine is well known to create harmful and undesirable deposits on the fuel intake valves of the engine.
- Additives used in gasoline/ethanol fuel mixtures in internal combustion engines can reduce the formation of these intake valve deposits (IVD), but such remediation typically shifts the problem to the combustion chamber, where unacceptable combustion chamber deposits (CCD) are then formed.
- IVD intake valve deposits
- the present invention is directed to the reduction of engine deposits formed as a result of the combustion of fuels in the engine.
- Engine deposits include intake valve deposits (IVD) and combustion chamber deposits (CCD).
- IVD intake valve deposits
- CCD combustion chamber deposits
- a reduction of IVD meant an increase in CCD.
- the present invention includes a method for reducing all engine deposits (especially IVD) by combusting a fuel having a high concentration of an oxygenate and a detergent-containing fuel additive.
- the oxygenate in the fuel is ethanol
- the detergent is Mannich-based. It has also been discovered that increasing the amount of oxygenate increases the conductivity of the fuel. It is postulated, without limitation to this theory, that the increase in conductivity, in combination with the addition of a detergent, more effectively reduces engine deposits. Good results are obtained in one embodiment when the conductivity of the fuel is in excess of about 1 ⁇ 10 3 nS/m.
- fuel or “gasoline” herein is meant a fuel containing hydrocarbons boiling in the gasoline boiling point range of from 80° C. to 450° C., and in one example from about 90° C. to about 400° C.
- high oxygenate content herein is meant an amount of oxygenate in the fuel of at least about 5 volume percent, preferably at least about 20 volume percent, and most preferably at least about 24 volume percent.
- a common oxygenate that may be used is ethanol.
- the ethanol content in the hydrocarbonaceous fuel is about 24 volume percent and in other examples, the ethanol content is about 25, 50 and 75 volume percent in the fuel.
- intake valves and “combustion chambers” referred to herein describe these conventional parts and portions of an internal combustion engine.
- the particular type of internal combustion engine that may benefit from the methods and compositions herein may be direct-injection gasoline, spark-ignited engines.
- supercharged and turbocharged types of direct-injection gasoline, spark-ignited engines will especially benefit from the methods and compositions herein.
- detergent or “detergent additive” herein is meant any detergent additive included in a gasoline performance additive package known to those of skill in the art.
- the detergent is preferably a Mannich-base detergent, or a Mannich-base polyisobutylene cresol detergent, or a mixture thereof.
- Mannich-base detergent herein is meant the product from the reaction or combination of a hydroxyaromatic compound, an aldehyde or precursor thereof, and an amine.
- hydroxyaromatic herein is meant a phenol, a substituted phenol, a cresol, an alkyl-substituted cresol, a polyalkylene cresol, a polyalkylene phenol.
- the hydroxyaromatic compound is a polyisobutylene-substituted cresol
- the aldehyde is formaldehyde
- the amine is selected from the group consisting of propylenediamine (PDA), diethylenetriamine (DETA), triethylenetetramine (TETA), tetraethylenepentamine (TEPA), and pentaethylenehexamine (PEHA).
- a Mannich-base detergent fuel additive in a gasoline fuel having a high ethanol content greater than about 5%, and especially greater than about 24% by volume results in an unexpected reduction in the amount of deposit formed on the intake valves of an internal combustion engine, without increasing the amount of combustion chamber deposits formed by the combustion of the fuel in the engine.
- ethanol and Mannich-base detergent work synergistically to control the formation of deposits, without a negative impact on combustion chamber deposits. Intake valve deposits are reduced and combustion chamber deposits are not increased when the Mannich-base detergent additive is used with ethanol (>5% by volume) in the fuel.
- FIG. 1 illustrates the effect of using a Mannich-base detergent additive HiTEC® 6421 Detergent Additive in a gasoline having 24-volume percent ethanol.
- the detergent in HiTEC® 6421 is a Mannich-base detergent (HiTEC® 6410, available from Ethyl Corporation).
- HiTEC® 6410 a Mannich-base detergent
- the results show that without ethanol or the Mannich-base detergent, the base fuel produced about 545.8 milligrams of intake valve deposits in a Ford 2.3 liter engine when tested according to ASTM D6201.
- the Mannich-base detergent was added at levels of 50, 65 and 80.9 pounds per thousand barrels, the amount of IVD measured dropped off dramatically to levels of less than 34 milligrams.
- HiTEC® 6410 Detergent Additive is prepared according to the teaching of U.S. Pat. No. 5,725,612, which is incorporated herein by reference in its entirety.
- HiTEC® 6421 is prepared according to the teaching of U.S. Pat. No. 6,048,373 which is incorporated herein by reference in its entirety.
- a useful fuel additive herein contains: Component Name Wt % Mannich detergent 40.0 solvent 30.0 alkyl alcohol 3.0 demulsifier 0.5 polyether polyol 13.0 polybutylene polymer 13.0 carboxylic acid in solvent 0.5 Total 100.0
- FIG. 2 shows the effect of high ethanol content (24% by volume) with Mannich detergent additive on the combustion chamber deposits when studied in ASTM D6201 in a Ford 2.3 liter engine.
- the Mannich detergent used in the results of FIG. 2 was HiTEC® 6410 Detergent Additive.
- HiTEC® 6410 Detergent Additive As FIG. 2 shows, the addition of the Mannich detergent supplied as HiTEC® 6421 in gasoline fuel without ethanol caused a steady increase in combustion chamber deposit formation as the detergent treat rate increased.
- the rate of deposit formation increases at a slower rate with ethanol present, and in fact, the rate goes down at 65 to 80.9 pounds per thousand barrel (PTB) treat rate.
- FIGS. 3 and 4 show similar results in an alternate fuel.
- FIG. 5 The interaction of fuel conductivity and engine deposits is demonstrated in FIG. 5 .
- fuels having relatively higher conductivity exhibit relatively lower amounts of engine deposits such as IVD and CCD.
- the conductivity is related, at least in part, to the amount of ethanol blended with the fuel. In each sample without ethanol, the conductivity of the fuel is less than one nS/m. (As measured by ASTM Test D2624-O 2 , “Standard Test Methods for Electrical Conductivity of Aviation and Distillate Fuels”). For each fuel that contains about 5% or more of ethanol, the conductivity increases to more than one nS/m.
- a method is provided where a fuel with ethanol has a conductivity greater than about 100 nS/m.
- the fuels containing 24% or 25% ethanol display conductivities in excess of 1000 nS/m.
- fuels having low conductivity result in increased deposits over the combustion of those same fuels that have conductivity much greater than one nS/m.
- FIG. 6 shows the fuel analysis for the fuels depicted in FIGS. 1-4 .
- reactants and components referred to by chemical name anywhere in the specification or claims hereof, whether referred to in the singular or plural, are identified as they exist prior to coming into contact with another substance referred to by chemical name or chemical type (e.g., base fuel, solvent, etc.). It matters not what chemical changes, transformations and/or reactions, if any, take place in the resulting mixture or solution or reaction medium as such changes, transformations and/or reactions are the natural result of bringing the specified reactants and/or components together under the conditions called for pursuant to this disclosure.
- the reactants and components are identified as ingredients to be brought together either in performing a desired chemical reaction or in forming a desired composition (such as an additive concentrate or additized fuel blend).
- the additive components can be added or blended into or with the base fuels individually per se and/or as components used in forming preformed additive combinations and/or sub-combinations. Accordingly, even though the claims hereinafter may refer to substances, components and/or ingredients in the present tense (“comprises”, “is”, etc.), the reference is to the substance, components or ingredient as it existed at the time just before it was first blended or mixed with one or more other substances, components and/or ingredients in accordance with the present disclosure. The fact that the substance, components or ingredient may have lost its original identity through a chemical reaction or transformation during the course of such blending or mixing operations or immediately thereafter is thus wholly immaterial for an accurate understanding and appreciation of this disclosure and the claims thereof.
Abstract
Description
- The present invention relates to a method for controlling deposit formation on intake valves and combustion chambers in engines by combusting in the engine a fuel composition having a high ethanol content and a detergent additive. The invention also relates to a high ethanol content fuel containing a detergent in an amount effective for improving the reduction in valve deposits resulting from the combustion of the fuel.
- Additives for gasoline used in vehicles have been used for many years to improve the performance of the vehicle, reduce the emissions from the combustion of the fuel, and modify the physical and chemical properties of the fuel. One additive that has been used for many years is ethanol, or ethyl alcohol, and other oxygenates. However, the use of ethanol in a gasoline combusted in an internal combustion engine is well known to create harmful and undesirable deposits on the fuel intake valves of the engine.
- Additives used in gasoline/ethanol fuel mixtures in internal combustion engines can reduce the formation of these intake valve deposits (IVD), but such remediation typically shifts the problem to the combustion chamber, where unacceptable combustion chamber deposits (CCD) are then formed.
- Thus, what is needed is an additive which, when added to a gasoline/ethanol fuel mixture for combustion in an internal combustion engine, will upon combustion exhibit in the engine a significant reduction in IVD, and simultaneously a reduction or at least a “no-harm” on CCD in the engine.
- The present invention is directed to the reduction of engine deposits formed as a result of the combustion of fuels in the engine. Engine deposits include intake valve deposits (IVD) and combustion chamber deposits (CCD). Historically, a reduction of IVD meant an increase in CCD. The present invention includes a method for reducing all engine deposits (especially IVD) by combusting a fuel having a high concentration of an oxygenate and a detergent-containing fuel additive. In one embodiment, the oxygenate in the fuel is ethanol, and the detergent is Mannich-based. It has also been discovered that increasing the amount of oxygenate increases the conductivity of the fuel. It is postulated, without limitation to this theory, that the increase in conductivity, in combination with the addition of a detergent, more effectively reduces engine deposits. Good results are obtained in one embodiment when the conductivity of the fuel is in excess of about 1×103 nS/m.
- By “fuel” or “gasoline” herein is meant a fuel containing hydrocarbons boiling in the gasoline boiling point range of from 80° C. to 450° C., and in one example from about 90° C. to about 400° C.
- By “high oxygenate content” herein is meant an amount of oxygenate in the fuel of at least about 5 volume percent, preferably at least about 20 volume percent, and most preferably at least about 24 volume percent. A common oxygenate that may be used is ethanol. In one example, the ethanol content in the hydrocarbonaceous fuel is about 24 volume percent and in other examples, the ethanol content is about 25, 50 and 75 volume percent in the fuel. There is no known upper limit on the ethanol (or any oxygenate) content in a fuel which will benefit from the present invention, but ethanol contents above about 80 volume percent, while not outside the scope of the invention, may have certain undesired effects.
- The “intake valves” and “combustion chambers” referred to herein describe these conventional parts and portions of an internal combustion engine. In one example, the particular type of internal combustion engine that may benefit from the methods and compositions herein may be direct-injection gasoline, spark-ignited engines. And by further example, supercharged and turbocharged types of direct-injection gasoline, spark-ignited engines will especially benefit from the methods and compositions herein. These terms are used as they are conventionally and customarily known to those of skill in the art.
- By “detergent” or “detergent additive” herein is meant any detergent additive included in a gasoline performance additive package known to those of skill in the art. The detergent is preferably a Mannich-base detergent, or a Mannich-base polyisobutylene cresol detergent, or a mixture thereof. By “Mannich-base detergent” herein is meant the product from the reaction or combination of a hydroxyaromatic compound, an aldehyde or precursor thereof, and an amine. By “hydroxyaromatic” herein is meant a phenol, a substituted phenol, a cresol, an alkyl-substituted cresol, a polyalkylene cresol, a polyalkylene phenol. In one example, the hydroxyaromatic compound is a polyisobutylene-substituted cresol, the aldehyde is formaldehyde, and the amine is selected from the group consisting of propylenediamine (PDA), diethylenetriamine (DETA), triethylenetetramine (TETA), tetraethylenepentamine (TEPA), and pentaethylenehexamine (PEHA).
- According to an embodiment of the present invention it has been surprisingly discovered that the combination of a Mannich-base detergent fuel additive in a gasoline fuel having a high ethanol content greater than about 5%, and especially greater than about 24% by volume results in an unexpected reduction in the amount of deposit formed on the intake valves of an internal combustion engine, without increasing the amount of combustion chamber deposits formed by the combustion of the fuel in the engine.
- More specifically, it is seen that the ethanol and Mannich-base detergent work synergistically to control the formation of deposits, without a negative impact on combustion chamber deposits. Intake valve deposits are reduced and combustion chamber deposits are not increased when the Mannich-base detergent additive is used with ethanol (>5% by volume) in the fuel.
-
FIG. 1 illustrates the effect of using a Mannich-base detergent additive HiTEC® 6421 Detergent Additive in a gasoline having 24-volume percent ethanol. The detergent in HiTEC® 6421 is a Mannich-base detergent (HiTEC® 6410, available from Ethyl Corporation). The results show that without ethanol or the Mannich-base detergent, the base fuel produced about 545.8 milligrams of intake valve deposits in a Ford 2.3 liter engine when tested according to ASTM D6201. The combustion of a comparable base fuel with 24 volume percent ethanol but no Mannich-base detergent actually resulted in an increase in intake valve deposits, resulting in about 630.5 milligrams of deposit. However, as the Mannich-base detergent was added at levels of 50, 65 and 80.9 pounds per thousand barrels, the amount of IVD measured dropped off dramatically to levels of less than 34 milligrams. - HiTEC® 6410 Detergent Additive is prepared according to the teaching of U.S. Pat. No. 5,725,612, which is incorporated herein by reference in its entirety.
- HiTEC® 6421 is prepared according to the teaching of U.S. Pat. No. 6,048,373 which is incorporated herein by reference in its entirety.
- A useful fuel additive herein contains:
Component Name Wt % Mannich detergent 40.0 solvent 30.0 alkyl alcohol 3.0 demulsifier 0.5 polyether polyol 13.0 polybutylene polymer 13.0 carboxylic acid in solvent 0.5 Total 100.0 -
FIG. 2 shows the effect of high ethanol content (24% by volume) with Mannich detergent additive on the combustion chamber deposits when studied in ASTM D6201 in a Ford 2.3 liter engine. The Mannich detergent used in the results ofFIG. 2 was HiTEC® 6410 Detergent Additive. AsFIG. 2 shows, the addition of the Mannich detergent supplied as HiTEC® 6421 in gasoline fuel without ethanol caused a steady increase in combustion chamber deposit formation as the detergent treat rate increased. According to the invention, the rate of deposit formation increases at a slower rate with ethanol present, and in fact, the rate goes down at 65 to 80.9 pounds per thousand barrel (PTB) treat rate.FIGS. 3 and 4 show similar results in an alternate fuel. - The fuel samples with both detergent and 24 volume percent ethanol, as shown in
FIG. 2 , the combustion chamber deposit formation rate from the combustion stayed steady or declined as the PTB treat rate increased. This desirable combination of reduced intake valve deposits (seeFIG. 1 ) with “no-harm” and even reduction on combustion chamber deposit formation is unexpected based on prior use of ethanol in gasoline. - The interaction of fuel conductivity and engine deposits is demonstrated in
FIG. 5 . In that Figure, it is seen that fuels having relatively higher conductivity exhibit relatively lower amounts of engine deposits such as IVD and CCD. As seen inFIG. 5 , the conductivity is related, at least in part, to the amount of ethanol blended with the fuel. In each sample without ethanol, the conductivity of the fuel is less than one nS/m. (As measured by ASTM Test D2624-O2, “Standard Test Methods for Electrical Conductivity of Aviation and Distillate Fuels”). For each fuel that contains about 5% or more of ethanol, the conductivity increases to more than one nS/m. In another embodiment, a method is provided where a fuel with ethanol has a conductivity greater than about 100 nS/m. Significantly, in another embodiment, the fuels containing 24% or 25% ethanol display conductivities in excess of 1000 nS/m. Thus, fuels having low conductivity (less than one nS/m) result in increased deposits over the combustion of those same fuels that have conductivity much greater than one nS/m. -
FIG. 6 shows the fuel analysis for the fuels depicted inFIGS. 1-4 . - It is to be understood that the reactants and components referred to by chemical name anywhere in the specification or claims hereof, whether referred to in the singular or plural, are identified as they exist prior to coming into contact with another substance referred to by chemical name or chemical type (e.g., base fuel, solvent, etc.). It matters not what chemical changes, transformations and/or reactions, if any, take place in the resulting mixture or solution or reaction medium as such changes, transformations and/or reactions are the natural result of bringing the specified reactants and/or components together under the conditions called for pursuant to this disclosure. Thus the reactants and components are identified as ingredients to be brought together either in performing a desired chemical reaction or in forming a desired composition (such as an additive concentrate or additized fuel blend). It will also be recognized that the additive components can be added or blended into or with the base fuels individually per se and/or as components used in forming preformed additive combinations and/or sub-combinations. Accordingly, even though the claims hereinafter may refer to substances, components and/or ingredients in the present tense (“comprises”, “is”, etc.), the reference is to the substance, components or ingredient as it existed at the time just before it was first blended or mixed with one or more other substances, components and/or ingredients in accordance with the present disclosure. The fact that the substance, components or ingredient may have lost its original identity through a chemical reaction or transformation during the course of such blending or mixing operations or immediately thereafter is thus wholly immaterial for an accurate understanding and appreciation of this disclosure and the claims thereof.
- At numerous places throughout this specification, reference has been made to a number of U.S. patents, published foreign patent applications and published technical papers. All such cited documents are expressly incorporated in full into this disclosure as if fully set forth herein.
- This invention is susceptible to considerable variation in its practice. Therefore the foregoing description is not intended to limit, and should not be construed as limiting, the invention to the particular exemplifications presented hereinabove. Rather, what is intended to be covered is as set forth in the ensuing claims and the equivalents thereof permitted as a matter of law.
- Patentee does not intend to dedicate any disclosed embodiments to the public, and to the extent any disclosed modifications or alterations may not literally fall within the scope of the claims, they are considered to be part of the invention under the doctrine of equivalents.
Claims (22)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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US10/640,523 US20050034360A1 (en) | 2003-08-13 | 2003-08-13 | Use of detergent additives in high-ethanol fuels for deposit control |
CA002474320A CA2474320A1 (en) | 2003-08-13 | 2004-07-15 | Use of detergent additives in high-ethanol fuels for deposit control |
EP04254323A EP1506992A1 (en) | 2003-08-13 | 2004-07-19 | Use of detergent additives in ethanol-containing fuel for deposit control |
ZA200405909A ZA200405909B (en) | 2003-08-13 | 2004-07-23 | Use of detergent additives in high-ethanol fuels for deposit control. |
BR0403263-2A BRPI0403263A (en) | 2003-08-13 | 2004-08-13 | Use of detergent additives in high ethanol fuels for deposit control |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US10/640,523 US20050034360A1 (en) | 2003-08-13 | 2003-08-13 | Use of detergent additives in high-ethanol fuels for deposit control |
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US10/640,523 Abandoned US20050034360A1 (en) | 2003-08-13 | 2003-08-13 | Use of detergent additives in high-ethanol fuels for deposit control |
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EP (1) | EP1506992A1 (en) |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070245621A1 (en) * | 2006-04-20 | 2007-10-25 | Malfer Dennis J | Additives for minimizing injector fouling and valve deposits and their uses |
US20080086933A1 (en) * | 2006-10-16 | 2008-04-17 | Cunningham Lawrence J | Volatility agents as fuel additives for ethanol-containing fuels |
US20080086936A1 (en) * | 2006-10-16 | 2008-04-17 | Cunningham Lawrence J | Method and compositions for reducing wear in engines combusting ethanol-containing fuels |
US20080086934A1 (en) * | 2006-10-16 | 2008-04-17 | Cunningham Lawrence J | Protecting fuel delivery systems in engines combusting ethanol-containing fuels |
US20080168708A1 (en) * | 2007-01-11 | 2008-07-17 | Cunningham Lawrence J | Method and compositions for reducing deposits in engines combusting ethanol-containing fuels and a corrosion inhibitor |
US20080244960A1 (en) * | 2007-04-09 | 2008-10-09 | Randall Fischer | Fuel blends |
US9206373B2 (en) | 2012-08-17 | 2015-12-08 | Afton Chemical Corporation | Calcium neutral and overbased mannich and anhydride adducts as detergents for engine oil lubricants |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105722958A (en) | 2013-08-27 | 2016-06-29 | 英国石油国际有限公司 | Methods and uses for controlling deposits on valves in direct-injection spark-ignition engines |
RU2549179C1 (en) * | 2014-01-30 | 2015-04-20 | Открытое акционерное общество "Всероссийский научно-исследовательский институт по переработке нефти" (ОАО "ВНИИ НП") | Alternative motor fuel |
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WO2001042399A1 (en) * | 1999-12-13 | 2001-06-14 | Ethyl Corporation | Fuels compositions for direct injection gasoline engines containing mannich detergents |
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- 2003-08-13 US US10/640,523 patent/US20050034360A1/en not_active Abandoned
-
2004
- 2004-07-15 CA CA002474320A patent/CA2474320A1/en not_active Abandoned
- 2004-07-19 EP EP04254323A patent/EP1506992A1/en not_active Withdrawn
- 2004-07-23 ZA ZA200405909A patent/ZA200405909B/en unknown
- 2004-08-13 BR BR0403263-2A patent/BRPI0403263A/en not_active Application Discontinuation
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US4231759A (en) * | 1973-03-12 | 1980-11-04 | Standard Oil Company (Indiana) | Liquid hydrocarbon fuels containing high molecular weight Mannich bases |
US4398921A (en) * | 1981-11-02 | 1983-08-16 | Ethyl Corporation | Gasohol compositions |
US4456454A (en) * | 1983-06-23 | 1984-06-26 | Texaco Inc. | Mannich reaction product for motor fuels |
US5160350A (en) * | 1988-01-27 | 1992-11-03 | The Lubrizol Corporation | Fuel compositions |
US5207939A (en) * | 1990-08-23 | 1993-05-04 | Mobil Oil Corporation | Dihydrocarbyl substituted phenylenediamine-derived phenolic products as antioxidants |
US5725612A (en) * | 1996-06-07 | 1998-03-10 | Ethyl Corporation | Additives for minimizing intake valve deposits, and their use |
US5873917A (en) * | 1997-05-16 | 1999-02-23 | The Lubrizol Corporation | Fuel additive compositions containing polyether alcohol and hydrocarbylphenol |
US6048373A (en) * | 1998-11-30 | 2000-04-11 | Ethyl Corporation | Fuels compositions containing polybutenes of narrow molecular weight distribution |
US20030029077A1 (en) * | 2001-08-07 | 2003-02-13 | The Lubrizol Corporation, A Corporation Of The State Of Ohio | Fuel composition containing detergent combination and methods thereof |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070245621A1 (en) * | 2006-04-20 | 2007-10-25 | Malfer Dennis J | Additives for minimizing injector fouling and valve deposits and their uses |
US20080086933A1 (en) * | 2006-10-16 | 2008-04-17 | Cunningham Lawrence J | Volatility agents as fuel additives for ethanol-containing fuels |
US20080086936A1 (en) * | 2006-10-16 | 2008-04-17 | Cunningham Lawrence J | Method and compositions for reducing wear in engines combusting ethanol-containing fuels |
US20080086934A1 (en) * | 2006-10-16 | 2008-04-17 | Cunningham Lawrence J | Protecting fuel delivery systems in engines combusting ethanol-containing fuels |
US20080168708A1 (en) * | 2007-01-11 | 2008-07-17 | Cunningham Lawrence J | Method and compositions for reducing deposits in engines combusting ethanol-containing fuels and a corrosion inhibitor |
US20080244960A1 (en) * | 2007-04-09 | 2008-10-09 | Randall Fischer | Fuel blends |
US9206373B2 (en) | 2012-08-17 | 2015-12-08 | Afton Chemical Corporation | Calcium neutral and overbased mannich and anhydride adducts as detergents for engine oil lubricants |
Also Published As
Publication number | Publication date |
---|---|
CA2474320A1 (en) | 2005-02-13 |
EP1506992A1 (en) | 2005-02-16 |
BRPI0403263A (en) | 2005-06-07 |
ZA200405909B (en) | 2005-01-24 |
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