US20100107477A1 - Diesel fuel additive composition and scouring method using the same - Google Patents

Diesel fuel additive composition and scouring method using the same Download PDF

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Publication number
US20100107477A1
US20100107477A1 US12/589,628 US58962809A US2010107477A1 US 20100107477 A1 US20100107477 A1 US 20100107477A1 US 58962809 A US58962809 A US 58962809A US 2010107477 A1 US2010107477 A1 US 2010107477A1
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diesel fuel
component
fuel additive
additive composition
weight
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Hiroshi Ookubo
Yuki Yamamoto
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Denso Corp
Yuka Sangyo Co Ltd
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Denso Corp
Yuka Sangyo Co Ltd
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    • 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
    • C10L1/143—Organic compounds mixtures of organic macromolecular compounds with organic non-macromolecular compounds
    • 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
    • C10L10/06—Use of additives to fuels or fires for particular purposes for facilitating soot removal
    • 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
    • C10L1/12—Inorganic compounds
    • C10L1/1233—Inorganic compounds oxygen containing compounds, e.g. oxides, hydroxides, acids and salts thereof
    • C10L1/125—Inorganic compounds oxygen containing compounds, e.g. oxides, hydroxides, acids and salts thereof water
    • 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
    • C10L1/185—Ethers; Acetals; Ketals; Aldehydes; Ketones
    • C10L1/1852—Ethers; Acetals; Ketals; Orthoesters
    • 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
    • C10L1/185—Ethers; Acetals; Ketals; Aldehydes; Ketones
    • C10L1/1852—Ethers; Acetals; Ketals; Orthoesters
    • C10L1/1855—Cyclic ethers, e.g. epoxides, lactides, lactones
    • 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
    • C10L1/192—Macromolecular compounds
    • C10L1/198—Macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds homo- or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon to carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid
    • C10L1/1985—Macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds homo- or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon to carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid polyethers, e.g. di- polygylcols and derivatives; ethers - esters
    • 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
    • C10L1/222—Organic compounds containing nitrogen containing at least one carbon-to-nitrogen single bond
    • C10L1/2222—(cyclo)aliphatic amines; polyamines (no macromolecular substituent 30C); quaternair ammonium compounds; carbamates
    • C10L1/2225—(cyclo)aliphatic amines; polyamines (no macromolecular substituent 30C); quaternair ammonium compounds; carbamates hydroxy containing
    • 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
    • C10L1/232—Organic compounds containing nitrogen containing nitrogen in a heterocyclic ring
    • 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
    • C10L1/234—Macromolecular compounds
    • C10L1/238—Macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
    • 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
    • C10L1/234—Macromolecular compounds
    • C10L1/238—Macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
    • C10L1/2383—Polyamines or polyimines, or derivatives thereof (poly)amines and imines; derivatives thereof (substituted by a macromolecular group containing 30C)
    • C10L1/2387—Polyoxyalkyleneamines (poly)oxyalkylene amines and derivatives thereof (substituted by a macromolecular group containing 30C)

Definitions

  • the present invention relates to a diesel fuel additive composition added to diesel fuel, and a scouring method using the same.
  • a means to solve this problem is a diesel engine equipped with a common-rail-type fuel injection system.
  • a common-rail-type fuel injection system accumulates the fuel pressurized by a fuel injection pump, in a common-rail, which is an accumulator container, and blows the high-pressure fuel accumulated in the common-rail into a cylinder through a fuel injector nozzle.
  • the common-rail-type fuel injection system has the problem that the fuel is exposed to high temperature and high pressure and consequently various additives in the fuel are denatured, and therefore, deposits adhere to the injector nozzle.
  • detergents comprising polybutene amine, polyether amine, etc., as a main component, which are effective in removing carbon-based deposits.
  • Japanese unexamined patent publication No. 2008-81626 describes a detergent composition that can remove water-soluble deposits made of sodium- or potassium-compounds.
  • Japanese unexamined patent publication No. 2008-81627 describes a detergent composition that can remove mixed deposits in which water-soluble deposits made of sodium- or potassium-compounds and water-insoluble deposits made of fuel-degraded substance or additives are mixed.
  • polymer-substance derived deposits which are derived from polymer type substances, such as an ethylene-vinyl acetate copolymer, contained in diesel fuel as a low-temperature fluidity improving agent may be mixed in the above deposits.
  • diesel fuel additive composition that can be stably dispersed in diesel fuel, can remove polymer-substance derived deposits, water-soluble deposits, and water-insoluble deposits at once, and does not cause any adverse effect on an object to be scoured, and a scouring method using the diesel fuel additive composition.
  • a diesel fuel additive composition comprising
  • diesel fuel additive composition contains the component at 50 to 80% by weight, the component (b) at 5 to 20% by weight, the component (c) at 5 to 15% by weight, the component (d) at 5 to 15% by weight, and the component (e) at 1 to 5% by weight;
  • each of A 1 and A 2 is an alkylene group with a carbon number from 2 to 4, when A 1 O and/or A 2 O are repeated, each of A 1 and A 2 may be either the same or different alkylene group, and k and l respectively represent a number from 1 to 30),
  • R 2 is an alkyl group with a carbon number from 1 to 8
  • a 3 is an alkylene group with a carbon number of 2 or 3, when A 3 O is repeated, A 3 may be either the same or different alkylene group, and m represents a number from 1 to 4
  • R 3 and R 4 are alkyl groups with a carbon number from 1 to 8
  • a 4 is an alkylene group with a carbon number of 2 or 3
  • a 4 may be the same or different alkylene group, and n represents a number from 1 to 4).
  • the diesel fuel additive composition of the present invention is added to diesel fuel to scour deposits adhering on an injector nozzle of a diesel engine equipped with a common-rail-type fuel injector.
  • the above diesel fuel additive composition is stably dispersed in the diesel fuel due to the presence of the above components (a) to (e) at specific ratios, and therefore it is possible to remove polymer-substance derived deposits, water-soluble deposits, and water-insoluble deposits at once, without having any adverse influence on the to-be-scoured object.
  • the above diesel fuel additive composition in the diesel fuel can be ensured by above component (a), polyoxyalkylene alkyl amine.
  • the above diesel fuel additive composition can be dispersed stably, when it is added to diesel fuel.
  • Polymer-substance derived deposits and water-insoluble deposits can be satisfactorily removed due to the presence of the above component (a), polyoxyalkylene alkyl amine, above component (b), glycol monoalkyl ether, above component (c), glycol dialkyl ether, and above component (d), a heterocyclic compound, altogether in the diesel fuel additive composition.
  • Water-soluble deposits can be scoured due to the presence of above component (e), water.
  • the present invention can provide a diesel fuel additive composition that is stably dispersed in diesel fuel, can remove polymer-substance derived deposits, water-soluble deposits, and water-insoluble deposits at once, and does not cause any adverse effect on the object to be scoured.
  • a method of scouring and removing a polymer-substance derived deposit, a water-soluble deposit and a water-insoluble deposit adhering to an injector nozzle of a diesel engine equipped with a common-rail type fuel injector comprising adding the diesel fuel additive composition according to the first aspect of the invention at 0.5 to 2% by weight to diesel fuel.
  • the scouring method of the present invention is, as mentioned above, carried out using the diesel fuel additive composition of the first aspect of the invention. Therefore, the above diesel fuel additive composition is stably dispersed in the diesel fuel, and polymer-substance derived deposits, water-soluble deposits, and water-insoluble deposits are removed at once, without any adverse effect on the object to be scoured.
  • the diesel fuel additive composition according to the first aspect of the invention comprises above components (a), (b), (c), (d), and (e) as mentioned above.
  • R 1 represents an alkyl group with a carbon number from 8 to 25.
  • alkyl group with a carbon number from 8 to 25 for example, an octyl group, a nonyl group, a decyl group, a dodecyl group, a tridecyl group, a tetradecyl group, a hexadecyl group, an octadecyl group, etc., can be provided.
  • a dodecyl group is particularly preferable for above R 1 .
  • each of A 1 and A 2 represents an alkylene group with a carbon number from 2 to 4.
  • alkylene group with a carbon number from 2 to 4 for example, an ethylene group, a propylene group, a butylene group, etc., can be provided.
  • a 1 O and/or A 2 O are repeated, i.e., when k and/or 1 are from 2 to 30, A 1 and/or A 2 may be either the same or different alkylene groups.
  • an ethylene group is preferable.
  • a 1 or A 2 When above A 1 or A 2 is a methylene group, hydrophilicity is high, thus leading to the possible decrease of the solubility of the fuel. On the other hand, when above A 1 or A 2 is an alkylene group having a carbon number of 5 or more, the lipophilicity is high, and thus water may not be stably dispersed.
  • each of k and l represents a number from 1 to 30.
  • the value of K+l be from 2 to 4. If the value of k+l is above 4, hydrophilicity increases, and thus the solubility of the fuel may be lowered.
  • Above component (a) is preferably lauryl diethanolamine.
  • R 2 is an alkyl group with a carbon number from 1 to 8.
  • a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, a heptyl group, and an octyl group can be provided.
  • R 2 is an alkyl group with a carbon number of 9 or more, the solidifying point thereof is high, and accordingly, the low-temperature fluidity is lowered.
  • a 3 is an alkylene group with a carbon number of 2 or 3.
  • an ethylene group, a propylene group, etc. can be provided.
  • a 3 O when A 3 O is repeated, i.e., when m is from 2 to 4, above A 3 may be either the same or different alkylene group.
  • a 3 is a methylene group
  • the hydrophilicity is high, thus leading to the possible decrease of the solubility of the fuel.
  • above A 3 is an alkylene group with a carbon number of 4 or more
  • lipophilicity is high, and thus water may not be stably dispersed.
  • m represents a number from 1 to 4.
  • m is 5 or more, hydrophilicity is high, and solubility of the fuel is possibly reduced.
  • Above component (b) is preferably one, or two or more selected from the group consisting of ethylene glycol monoethyl ether, diethylene glycol monomethyl ether, diethylene glycol monobutyl ether and dipropylene glycol dimethyl ether.
  • each of R 3 and R 4 represents an alkyl group with a carbon number from 1 to 8.
  • a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, a heptyl group, and an octyl group can be provided.
  • R 3 or R 4 is an alkyl group with a carbon number of 9 or more, the solidifying point is high, and the low-temperature fluidity may be reduced.
  • a 4 is an alkylene group with a carbon number of 2 or 3.
  • an ethylene group, a propylene group, etc. can be provided.
  • a 4 O when A 4 O is repeated, i.e., when n is from 2 to 4, the above A 4 may be either the same or different alkylene group.
  • n represents a number from 1 to 4.
  • n is 5 or more, the hydrophilicity is high, thus leading to the possible decrease of the solubility of the fuel.
  • Above component (c) is preferably one, or two or more selected from the group consisting of diethylene glycol dimethyl ether, diethylene glycol dibutyl ether and dipropylene glycol dimethyl ether.
  • a heterocyclic compound, that is above component (d), is a compound containing a nitrogen atom, an oxygen atom, a sulfur atom, etc., as a ring-constructing atom.
  • Above component (d) is preferably one, or two or more selected from the group consisting of N-methyl-2-pyrrolidone, 1,4 dioxane and ⁇ -butyrolactone.
  • Above component (a) is contained at 50 to 80% by weight.
  • the content of the above component (a) is less than 50% by weight, water may not be dispersed into the fuel stably. On the other hand, if the content of above component (a) is more than 80% by weight, the stability of the fuel additive at a low temperature occurs.
  • the content of above component (a) is from 60 to 70% by weight.
  • Above component (b) is contained at 5 to 20% by weight.
  • the content of the above component (b) is less than 5% by weight, a sufficient scouring effect is not obtained, and water may not be stably dispersed.
  • the content of above component (b) is more than 20% by weight, polymer derived deposits among the deposits adhering to the to-be-scoured object become viscous, and the operability of the injector nozzle may be reduced.
  • the content of the above component (b) is from 10 to 15% by weight.
  • Above component (c) is contained at 5 to 15% by weight.
  • the content of the above component (c) is from 5 to 10% by weight.
  • Above component (d) is contained at 5 to 15% by weight.
  • the content of the above component (d) is from 5 to 10% by weight.
  • Above component (e) is contained at 1 to 5% by weight.
  • above component (e) is less than 1% by weight, a scouring effect against water-soluble deposit components may not be displayed. On the other hand, if the content of above component (e) is more than 5% by weight, an adverse effect may be exerted on the system using the above object to be scoured, for example, leading to corrosion of the object to be scoured.
  • the content of above component (e) is from 2 to 3% by weight.
  • the content ratio of above component (e) to above component (a) is not higher than 0.1.
  • water which is component (e)
  • above content (e)/the content (a) is higher than 0.1, water cannot be stably dispersed, and an adverse effect may be exerted on the system using the above object to be scoured.
  • the diesel fuel additive composition of the present invention is a concentrated solution to be added to diesel fuel, and can remain stable by itself.
  • the above diesel fuel additive composition is used by being added at 0.5 to 2% by weight to diesel fuel.
  • the content of the above fuel additive is less than 0.5% by weight of diesel fuel, sufficient detergency may not be obtained.
  • the content of the above fuel additive is more than 2% by weight, the water content in the fuel increases, so that an adverse effect may be exerted on the system using the above object to be scoured, for example, leading to corrosion of the object to be scoured.
  • the content of the above diesel fuel additive composition to diesel fuel is 1% by weight.
  • the above fuel additive can be added to diesel fuel by pouring it into a fuel tank of a diesel engine, or diesel fuel blended with the diesel fuel additive composition beforehand may be used.
  • a cetane number-improving agent such as octyl nitrate and cyclohexyl nitrate
  • a cleaning agent such as polyether amine and polybutenyl amine
  • a corrosion inhibitor such as aliphatic amine and alkenyl succinate ester
  • an anti-freezing agent such as polyglycol ether
  • the scouring is, as described above, carried out by adding the diesel fuel additive composition according to the first aspect of the invention at 0.5 to 2% by weight to diesel fuel.
  • the content of the above fuel additive in the diesel fuel is less than 0.5% by weight, sufficient detergency may not be obtained.
  • the content of the above fuel additive is more than 2% by weight, the water content in the fuel increases, and an adverse effect may be exerted on the system using the above object to be scoured, for example, leading to corrosion of the object to be scoured.
  • the above scouring method can be carried out by pouring the diesel fuel additive composition into a fuel tank of the diesel engine, to thereby add the diesel fuel additive composition to diesel fuel, or by using diesel fuel blended with the diesel fuel additive composition beforehand.
  • diesel fuel additive compositions as embodiments of the present invention (Samples E1 to E6), and diesel fuel additive compositions as comparative examples (Samples C1 to 010) were prepared.
  • the diesel fuel additive compositions are comprised of (a) polyoxyalkylene alkyl amine represented by Formula (1) below, (b) glycol monoalkyl ether represented by Formula (2) below, (c) glycol dialkyl ether represented by Formula (3) below, (d) a heterocyclic compound, and (e) water.
  • the compositions contain the component (a) at 50 to 80% by weight, the component (b) at 5 to 20% by weight, the component (c) at 5 to 15% by weight, the component (d) at 5 to 15% by weight, and the component (e) at 1 to 5% by weight.
  • R 1 represents an alkyl group with a carbon number from 8 to 25
  • each of A 1 and A 2 is an alkylene group with a carbon number from 2 to 4
  • each of A 1 and A 2 may be either the same or different alkylene group
  • k and l respectively represent a number from 1 to 30.
  • R 2 is an alkyl group with a carbon number from 1 to 8
  • a 3 is an alkylene group with a carbon number of 2 or 3, when A 3 O is repeated, A 3 may be either the same or different alkylene group, and m represents a number from 1 to 4.
  • each of R 3 and R 4 is an alkyl group with a carbon number from 1 to 8
  • a 4 is an alkylene group with a carbon number of 2 or 3
  • a 4 may be the same or different alkylene group
  • n represents a number from 1 to 4.
  • components (a) to (e) shown in Table 1 were blended to produce diesel fuel additive compositions (Samples E1 to E6, and Samples C1 to C10) having the compositions shown in Table 2.
  • the low-temperature fluidity margin was evaluated for each sample by testing whether the samples were flowable at ⁇ 5° C. or not.
  • Sample C9 as the comparative example was not flow-movable at ⁇ 5° C., since the content of the component (a) was more than the upper limit defined in the present invention.
  • diesel fuel compositions (Diesel fuel compositions 1 to 17) shown in Table 4 were prepared by blending the respective diesel fuel additive compositions (Samples E1 to E6, and Samples C1 to C10) at 1% by weight to diesel fuel.
  • Diesel fuel composition 7 does not contain any diesel fuel additive composition, and comprises 100% diesel fuel.
  • the needle part to which deposits (a mixture of polymer-substance derived deposits, water-soluble deposits, and water-insoluble deposits) adhered was removed from the injector of a vehicle equipped with a fuel injecting system.
  • the needle part was then immersed in the individual diesel fuel compositions (Diesel fuel compositions 1 to 17) for 24 hrs, and the extent to which the deposits were removed was evaluated visually.
  • Diesel fuel compositions 1 to 6 as the embodiments of the present invention showed a good detergency.
  • the present invention can provide a diesel fuel additive composition that is stably dispersed in diesel fuel, removes polymer-substance derived deposits, water-soluble deposits, and water-insoluble deposits at once, and does not cause any adverse effect on the object to be scoured.
  • Diesel fuel composition 7 as a comparative example, which did not contain a diesel fuel additive composition, was bad and unacceptable in terms of detergency.
  • Diesel fuel composition 8 as a comparative example which used Sample C1 of which the content of the component (b) is below the lower limit defined in the present invention as a diesel fuel additive composition, was bad and unacceptable in terms of detergency and stability.
  • Diesel fuel composition 9 as a comparative example which used Sample C2 of which the content of the component (c) is below the lower limit defined in the present invention as a diesel fuel additive composition, was bad and unacceptable in terms of detergency.
  • Diesel fuel composition 10 as a comparative example which used Sample C3 of which the content of the component (d) is below the lower limit defined in the present invention as a diesel fuel additive composition was bad and unacceptable in terms of detergency and stability.
  • Diesel fuel composition 11 as a comparative example which used Sample C4 having the content of the component (b) above the upper limit defined in the present invention as a diesel fuel additive composition so that polymer-substance derived deposits were rendered viscous, was bad and unacceptable in terms of detergency.
  • Diesel fuel composition 12 as a comparative example which used Sample C5 having the content of the component (c) above the upper limit defined in the present invention as a diesel fuel additive composition so that polymer-substance derived deposits were rendered viscous, was bad and unacceptable in terms of detergency.
  • Diesel fuel composition 13 as a comparative example which used Sample C6 having the content of the component (d) above the upper limit defined in the present invention as a diesel fuel additive composition so that polymer-substance derived deposits were rendered viscous, was bad and unacceptable in terms of detergency.
  • Diesel fuel composition 14 as a comparative example which used Sample C7 of which the content of the component (e) is below the lower limit defined in the present invention as a diesel fuel additive composition, was bad and unacceptable in terms of detergency.
  • Diesel fuel composition 15 as a comparative example which used Sample C8 of which the content of the component (e) is above the upper limit defined in the present invention as a diesel fuel additive composition, was bad and unacceptable in terms of detergency, stability, and corrosivity.
  • Diesel fuel composition 16 as a comparative example gave good results in terms of detergency, stability, and corrosivity though it used Sample C9 which had the content of the component (a) above the upper limit defined in the present invention as a diesel fuel additive composition, and which was accordingly considered unacceptable in terms of the low-temperature fluidity margin as mentioned above, because the contents of the other detergent components in Diesel fuel composition 16 were within the ranges defined in the present invention.
  • Diesel fuel composition 17 as a comparative example was bad and unacceptable in terms of stability and corrosivity, for it used Sample C10 having the content of the component (a) below the lower limit defined in the present invention as a diesel fuel additive composition.

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Detergent Compositions (AREA)
  • Liquid Carbonaceous Fuels (AREA)
US12/589,628 2008-10-31 2009-10-26 Diesel fuel additive composition and scouring method using the same Abandoned US20100107477A1 (en)

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JP2008280957A JP5197305B2 (ja) 2008-10-31 2008-10-31 ディーゼル燃料添加剤組成物及びそれを用いた洗浄方法
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JP6034098B2 (ja) * 2012-08-29 2016-11-30 トヨタ自動車株式会社 インジェクタのデポジットを洗浄するためのクリーナ
CN103396901B (zh) * 2013-07-31 2014-12-17 肇庆欧迪斯实业有限公司 一种泡沫型节气门清洗气雾剂

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DE3631225A1 (de) * 1985-09-20 1987-04-23 Toyota Motor Co Ltd Additiv fuer dieselkraftstoff
US5316558A (en) * 1990-11-02 1994-05-31 Frank Gonzalez Catalytic clean-combustion-promoter compositions for liquid hydrocarbon fuels used in internal combustion engines
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EP2182048A1 (en) 2010-05-05
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ES2385422T3 (es) 2012-07-24
JP5197305B2 (ja) 2013-05-15

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