EP0763079A1 - Dampfphasenverbrennungsverfahren und zusammensetzungen - Google Patents

Dampfphasenverbrennungsverfahren und zusammensetzungen

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Publication number
EP0763079A1
EP0763079A1 EP95922135A EP95922135A EP0763079A1 EP 0763079 A1 EP0763079 A1 EP 0763079A1 EP 95922135 A EP95922135 A EP 95922135A EP 95922135 A EP95922135 A EP 95922135A EP 0763079 A1 EP0763079 A1 EP 0763079A1
Authority
EP
European Patent Office
Prior art keywords
fuel
combustion
fuels
engine
vapor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP95922135A
Other languages
English (en)
French (fr)
Inventor
William C. Orr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0763079A1 publication Critical patent/EP0763079A1/de
Ceased legal-status Critical Current

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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
    • C10L10/00—Use of additives to fuels or fires for particular purposes
    • C10L10/02—Use of additives to fuels or fires for particular purposes for reducing smoke development
    • C—CHEMISTRY; METALLURGY
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    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/10—Liquid carbonaceous fuels containing additives
    • C—CHEMISTRY; METALLURGY
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    • C10L1/14—Organic compounds
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    • C10L1/143—Organic compounds mixtures of organic macromolecular compounds with organic non-macromolecular compounds
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    • 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
    • C10L1/26—Organic compounds containing phosphorus
    • C10L1/2633—Organic compounds containing phosphorus phosphorus bond to oxygen (no P. C. bond)
    • C10L1/265—Organic compounds containing phosphorus phosphorus bond to oxygen (no P. C. bond) oxygen and/or sulfur 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
    • C10L1/28—Organic compounds containing silicon
    • C10L1/285—Organic compounds containing silicon 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
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/10—Liquid carbonaceous fuels containing additives
    • C10L1/14—Organic compounds
    • C10L1/30—Organic compounds compounds not mentioned before (complexes)
    • 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
    • C10L1/30—Organic compounds compounds not mentioned before (complexes)
    • C10L1/301—Organic compounds compounds not mentioned before (complexes) derived from metals
    • 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
    • C10L1/30—Organic compounds compounds not mentioned before (complexes)
    • C10L1/301—Organic compounds compounds not mentioned before (complexes) derived from metals
    • C10L1/303—Organic compounds compounds not mentioned before (complexes) derived from metals boron 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
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/10—Liquid carbonaceous fuels containing additives
    • C10L1/14—Organic compounds
    • C10L1/30—Organic compounds compounds not mentioned before (complexes)
    • C10L1/305—Organic compounds compounds not mentioned before (complexes) organo-metallic compounds (containing a metal to carbon bond)
    • 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
    • C10L1/30—Organic compounds compounds not mentioned before (complexes)
    • C10L1/305—Organic compounds compounds not mentioned before (complexes) organo-metallic compounds (containing a metal to carbon bond)
    • C10L1/306—Organic compounds compounds not mentioned before (complexes) organo-metallic compounds (containing a metal to carbon bond) organo Pb 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
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/10—Liquid carbonaceous fuels containing additives
    • C10L1/14—Organic compounds
    • C10L1/30—Organic compounds compounds not mentioned before (complexes)
    • C10L1/305—Organic compounds compounds not mentioned before (complexes) organo-metallic compounds (containing a metal to carbon bond)
    • C10L1/308—Organic compounds compounds not mentioned before (complexes) organo-metallic compounds (containing a metal to carbon bond) organo tin compounds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/32—Miller cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • This invention relates to methods and fuel compositions capable of vapor phase combustion for use in jet, turbine, diesel, fuel oil, gasoline and other combustion systems. More particularly, it relates to metallic vapor phase fuel combinations with high heats of enthalpy capable of major free energy improvements while simultaneously reducing combustion temperature.
  • organo-manganese Despite organo-manganese's anti-knock and other benefits, its use in hydrocarbon fuels produces another set of environmental and practical problems. Namely, metallic based fuels form metallic oxides in combustion. In the case of organo-manganese compounds, such metallics when combusted in hydrocarbon fuels generate harmful heavy manganese oxides (Mn 3 0 4 and 2 ° 3 ) / which in turn coat engine parts, combustion systems, turbines, exhaust surfaces, emission/exhaust catalysts, etc., causing for example, early fatigue, failure, excessive wear, particulate emissions of metals, long term hydrocarbon emission degradation, and the like. See U.S. Patents 3,585,012; 3,442,631; 3,718,444; and my EPO Patent # 0235280.
  • Mn 3 0 4 and 2 ° 3 harmful heavy manganese oxides
  • Harmful metallic deposition is well known and heretofore the practical problem in metallic usage.
  • deposition of manganese oxide on jet engines, turbines, and the like has long been a major obstacle to manganese's use.
  • Due to the severity of manganese deposits various methods were developed just to remove such oxides from jet engines. See U.S. Patent 3,556,846; 3,442,631; 3,526,545; 3,506,488.
  • metallic usage has been virtually halted in such applications, and alternative application is limited to very low concentrations of metallic.
  • Patent 4,600,408 (issued in 1986) discloses an alkyl phenyl carbonate as an anti-knock agent. Patent 4,600,408 notes the aforementioned organo-manganese oxide problem and discloses its composition must be organo- manganese free.
  • Applicant's invention resides in the discovery of the source of heavy metal oxidation problem, which occurs in a less than ideal combustion process wherein combustion burning velocities and temperatures are not optimized.
  • Applicant By effectively increasing the burning velocity of the fuel, while ideally reducing combustion temperatures with Applicant's fuel compositions and process. Applicant not only controls or avoids the generation of adverse metallic oxides, but liberates metallics to become principals in a new "clean high energy" class of propellants/fuels and combustion process. Applicant is also able to beneficially apply this discovery of the problem source to non-metallic fuels and systems. In essence. Applicant has discovered a combustion process that comprises certain chemical structure/sub ⁇ structure and/or mechanical structure/sub-structure that simultaneously 1) increases burning velocity while 2) reducing combustion temperatures, in a vapor phase combustion, whereby a high release rate of what might be known as "free energy" occurs.
  • Combustion Temperature Differences compares differences in combustion temperatures of differing fuel compositions measured via exhaust gas temperatures at different engine loads.
  • FIG. 3 combustion Temperatures and NOx Emissions, compares combustion temperature differences and their relationship to the generation of NOx emissions.
  • Figure 4. Indicated Burning Velocity compares the burning velocity of different fuels under differing loads.
  • Figure 8 Technical Enleanment Due to Distillation Depression shows warm driveability, emission and combustion improvements of MTBE/oxygen containing gasolines, due to maintaining minimum distillation temperatures for fuel containing oxygenated compounds.
  • Applicant's discovery is discovery of the original source of the heavy metallic oxide problem and its attendant solution, e.g increasing burning velocity and/or reducing combustion temperatures. Accordingly, Applicant discloses herein multiple methods and compositions that increase burning velocity and reduce combustion temperature, which solve this problem.
  • the unity of Applicant's invention is based upon the discovery of the problem's source, and that the solution has many aspects.
  • the metallic, itself in preferred but not required practices, becomes an integral and powerful agent in the combustion process, itself, and unexpectedly improves combustion thermal efficiencies, fuel economy, net available work, power generation, thrust, and the like; while simultaneously reducing hazardous pollutants.
  • Applicant expects significant combustion and energy conversion improvements at altitude in the case of aviation jet systems, aviation gasoline engines. Similar improvements are contemplated for a wide range of applications, e.g. diesel, gasoline, fuel oils, gas oil turbines, etc.
  • Applicant generally refers to thermal efficiency, hereinafter, in both its chemical and mechanical context, e.g. the efficiency of the combustion process and amount of useful work generated in the system, e.g. free energy.
  • thermal efficiency particularly as measured as a function of net useful work generated by the system is increased. Often very substantially. Simultaneously, due to the cool nature of the combustion temperatures, combustion systems will enjoy extended useful life, ease of operation, and improve performance.
  • thermal and/or combustion efficiency e.g. completeness of combustion, etc.
  • improvements can range from 2.0% to 5.0%, 5.0% to 10.0% or higher, modest improvements range from 0.05% to 1.0% to 2.0%. Exceptional improvements will range from 10%, 25% to 40%, 30% to 80%, or more.
  • the invention fundamentally resides in increasing 1) burning velocity of a non-leaded metallic containing fuel by a) increasing laminar burning velocity (by ECS chemical, distillation modification, and/or reformulation means) , b) increasing turbulent velocity (by chemical and/or mechanical means) and 2) reducing combustion temperature
  • applicant's invention incorporates multiple interrelating chemical and mechanical elements, all vital to the practice of the invention.
  • the use of compounds/components and/or chemical and/or mechanical, processes, methods, formulations, reformulations, chemical and non-chemical means, including combinations and sub-combinations thereof, which operate to increase combustion burning velocity and/or reduce combustion temperature (especially simultaneous velocity increases and temperature reductions) are expressly contemplated.
  • an oxygenated compound be employed, maximizing oxygen content is generally desirable.
  • Oxygen contents may range from 0.0001 to 80.0% by weight, or higher, of the composition. Fuel composition, combustion systems, legal concerns dictate. However, beneficial results do not tend to occur until 1.0%, 1.5%, 2.0% or more oxygen is included.
  • More preferred concentrations are 2.0% or more. However, smaller concentrations are acceptable in co-fuel applications.
  • a desirable range is from 0.001 to 30.0% oxygen by weight. Additional weight concentrations of oxygen include 0.001 to 15.0%., 0.5% to 1.5%, 0.3% to 2.7%, 0.4% to 1.8%, 0.5% to 1.9%, 0.6% to 2.0%, 0.7% to 2.1%, 0.8% to 2.2%, 0.9% to 2.3%, 1.0% to 2.4%, 1.1% to 2.5%, 1.2% to 2.6%, 1.8% to 2.2%, 2.0% to 3.7%, 0.2% to 0.9%, 1.0% to 4%, 2.0% to 8.0%,
  • acceptable increases in the rate of the fuel's burning velocity over an unadjusted fuel or combustion system will range from 1.0% to approximately 800%, or more.
  • Velocity increases of 0.2%, 0.5%, 1.0%, 2.0%, 3.5%, 5% to 10.0%, 7.0% to 15.%, 9.0% to 25%, 5.0% to 20%, 12% to 30%, 15% to 40%, 20% to 50% are desirable.
  • More desireable increases range from 5% to 60%, 10% to 80%, 20% to 100%, 30% to 150%.
  • Other increases are from about 100% to 200%, 100% to 300%.
  • Increases of 200% to 400%, 300% to 600%, 400% to 800%, 500% to 900% are also contemplated and desireable.
  • Increases of 300%, or more, are highly desireable, especially in Applicant's advance fuel and combustion systems. Increases outside these ranges are contemplated and desireable.
  • New knock sensor technology will be employed in conjunction with higher compression spark ignited engines necessary to practice Applicant's preferred embodiments.
  • New clean and super clean engine combustion design is contemplated as further embodiment. Improved and new catalytic conversions of exhaust emissions are also contemplated.
  • Advanced fuel formulation especially co-fuel formulation or reformulation, which substantially reduces hazardous emissions known or later learned to be hazardous are contemplated. Reformulation optimizing Applicant's preferred embodiments are especially contemplated.
  • close stoichiometric air-fuel ratio adjustment employing, for example computer enhanced electronics, is expressly contemplated.
  • COMBUSTION TEMPERATURE MODIFICATION PRACTICE Reducing combustion temperatures and improving burning velocities are expressly contemplated.
  • One such means is by reducing or eliminating higher boiling point hydrocarbons having lower relative latent heats of vaporization ("LHV") , as compared to the average LHV of the fuel.
  • LHV latent heats of vaporization
  • Applicant has discovered that by reducing or eliminating higher boiling point alkanes from gasoline boiling fuels, work potential is not lost despite the reduction in fuel end point and T-90 temperatures.
  • modification of hydrocarbon co-fuel's including T-90, T-50, or T-10 distillation temperatures and/or substituent components eliminate low burning velocity and low LHV hydrocarbons to the maximum extent possible.
  • LHV including aviation and automotive gasolines, gas oil turbine fuels, fuel oils, diesel fuels, jet aviation fuels, and the like.
  • Applicant's preferred practice includes elimination of higher boiling point alkanes over aromatic hydrocarbons, over cyclanes, over alkenes of the same boiling temperature.
  • fuels whose initial boiling point is in excess of 160°C (e.g. diesel, aviation jet, fuel oils, gas oil turbine fuels, etc.)
  • the preferred practice generally includes elimination of higher boiling temperature alkanes over aromatics over bi-cyclic hydrocarbons of the same boiling temperature.
  • wide boiling petroleum fractions e.g.
  • fuel's, with reduced end point and/or T-90 fractions, having increased LHV's be used in combination with a high energy metallic compound (as set forth below) , and optionally with a ECS compound (as set forth below) ; whereby reductions in the formation of free carbon in primary combustor zones, reductions in hazardous exhaust emissions, including NOx, reductions or control of manganese oxides on exhaust catalyst beds, and the like, occur.
  • this T-90 reduction tends to reduce harmful VOC, hydrocarbon and/or NOx emissions. Quite unexpectedly.
  • Applicant intends they be logically connected to Applicant's single invention, namely an advanced form of combustion resulting from reduced combustion temperature and/or increased burning velocity.
  • Applicant's initial disclosure below relates primarily to temperature reduction obtained by intrinsic fuel modification. Later examples amplify beneficial combustion effect by adding additional burning velocity and combustion temperature reductions by extrinsic means.
  • Applicant's intent the structure or substructure of his various examples, which may or may individually deal with the same fuel, the same aspect of the problem, or even same combustion system, may non-the-less be combined.
  • a method of increasing work potential, fuel economy, reducing combustion emissions of a vehicle operating on a conventional or reformulated gasoline, oxygenate optional, comprising: Reducing the boiling temperature of gasoline such that its boiling temperature at T-90 fraction is no greater than 300°F, 295°F, 290°F, 280°F, 270°F, or 260°F, or less, while simultaneously increasing the fuel's LHV to at least 130, 135, 140, 145, 150, 155, 160, 165, 170 btu/lb; optionally admixing MMT into the composition up to 1/64 or 1/32 gr mn/gal; combusting said composition in a gasoline powered vehicle; whereby fuel economy is improved over unadjusted fuel alone, or unadjusted co-fuel with manganese, or co-fuel with T90 absent LHV increase, or manganese containing co-fuel with T90 absent LHV increase (preferred increases are 0.5, 1.0, 1.5, 2.0, 2.5% or more).
  • a fuel composition comprising a conventional or reformulated gasoline, an optional oxygenate, a T-90 fraction no greater than 290°F, 280°F, 270°F, 260°F, a latent heat of vaporization above 130, 135, 140, 145, 150, 155, 160, 165, 170 btu/lb; optionally MMT up to 1/64, 1/32 gram/gal; optionally a burning velocity exceeding 48, 49, 50, 51, 52, 53, 54 cm/sec; said fuel characterized as improving fuel economy (preferably at least 0.5% or more) over unadjusted fuel or adjusted T90 fuel absent minimum LHV.
  • Example 2 The method of example 1, wherein the fuel additionally comprises a charge temperature reducing amount of a combustion chamber deposit control additive.
  • Example 3 The method of example 1, wherein fuel economy is improved over the clear fuel containing same amount of metallic but not having reduced T-90 temperatures and elevated LHV.
  • latent heat of vaporization and/or burning velocity of the adjusted T-90 fuel is 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0% greater than non adjusted fuel.
  • fuel T-90 temperature is less than 310°F, more preferably less than 305°F, 300°F, 295°F, 290°F, 285°F, 280°F, 275°F, 270°F, 265°F, 260°F, 255°F, 250°F, 245°F, or less; and MMT is included in the amount of 1/32 gr. Mn/gal; and optionally a combustion chamber deposit control additive is employed in sufficient amount; whereby charge temperature is reduced; wherein fuel economy is improved over same unadjusted fuel by at least 0.2, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, or more, percentage.
  • Example 6 The composition of example 5, wherein toxic, CO, HC, and/or NOx emissions are also reduced.
  • Example 9 The example of 8, wherein the composition comprises an ECS compound in a sufficient concentration to increase average burning velocity of composition by an additional 5.0%, or more, over clear composition as measured by laminar bunsen burner.
  • Example 10 The example of 9, wherein the addition of the ECS compound is sufficient to reduce average combustion temperatures by 25°F, as measured under load of at least 20 indicated horse power (ihp) (using the equivalent of 350 CID engine) .
  • this aspect of his invention e.g. addition of ECS compound with/or without metallic
  • T-50 temperatures are in the range of approximately 160°F to 205 ⁇ >F or 170°F to 205, 180°F to 205°F; or alternative 160°F to 190°F or 160°F to 180°F (particularly in later date applications) .
  • mid-range temperature control is generally applicable to all wide boiling fuels.
  • preferred reductions in combustion temperatures range from 10°F to 500°F.
  • Reductions of 25°F to 50°F, or more, are desireable.
  • Reductions of 100°F, or more, are desireable.
  • combustion temperature control absent any other aspect of Applicant's invention, is contemplated to reduce emissions and/or as a means to control wash coat deposits from low mn concentrations.
  • Example 11 A method of avoiding the plugging or coating of exhaust catalysts or OBD II monitors or monitoring systems with manganese oxides, said method comprising: mixing a high latent heat of vaporization ECS fuel in sufficient quantity with a conventional unleaded or reformulated unleaded gasoline (preferably formulated to increase LHV) containing 1/64, 1/32 gr or more Mn/gal of MMT, wherein said fuel's combustion and exhaust temperatures are sufficiently reduced that inlet exhaust gas temperature of catalyst is less than 1400°f, more preferably less than 1350, 1300, 1250, 1200°F.
  • a conventional unleaded or reformulated unleaded gasoline preferably formulated to increase LHV
  • a method of avoiding the plugging or coating of exhaust catalysts with manganese oxides comprising: modifying T-90 gasoline temperatures to reduce combustion temperature of a low mn containing fuel, wherein said fuel's combustion and exhaust temperatures are sufficiently reduced that inlet exhaust gas temperature of catalyst is less than 1400°f. Applicant has found temperature reductions to be more significant in higher temperature systems.
  • Applicant's invention includes the discovery of a class of chemical compounds, which reduce combustion temperature and/or contain certain free radicals, which are released during the combustion process to perform the object of accelerating burning velocity of Applicant's invention.
  • ECS Enhanced Combustion Structure
  • ECS compounds Those compounds which contain such structure and/or are otherwise capable of performing the object of this invention are referred to as ECS compounds, e.g. those compounds containing ECS and that perform the object of Applicant's invention.
  • radicals freely form during the earliest stages of the combustion process (preferably after ignition) ; with said radicals being unstable and having a free or unused valency electron that can chemically bond. It is highly desireable that they act as chain carriers in the main chain reaction of combustion, particularly in combination with metallic combustion.
  • combustion yields dissociated and unstable molecules and atoms (e.g. OH, CN, CH, NH, etc.) with subsequent reassociation, leading to continuing combustion, increasing exhaust velocity.
  • dissociated and unstable molecules and atoms e.g. OH, CN, CH, NH, etc.
  • Applicant has found the heat of formation of his preferred free radicals to be relatively low. Acceptable heats of formation for said free radicals typically are less than 150, 100, 75, or 50 K cal mole "1 . Other heats of formation include 34 (CH3) , 26 (C2H5) , 9.3 (OH), 2.0 (CH30) Kcal mole "1 . It is contemplated that negative heats of formation are also acceptable. A positive or low negative heat of formation for the ECS compound containing said free radicals is desireable.
  • Acceptable negative ranges for heats of formation for ECS compounds include those less than approximately -200, -180, -160, -150, -145, -130, -120, -100 Kcal/mol, with more preferred being less than -90, -80, -75, -70, -65 Kcal/mol and the most preferred being less than approximately -60, - 55, -50 ,- 45, -40, -35, -30, -20, -10 kcal/mol, or positive in value. The closer to a positive or the higher the positive, the more preferred.
  • ECS compounds which easily decompose and/or dissociate generating significant free radicals in compression, early and/or regular ignition or combustion, are desireable. It is desirably that dissociation occurs below normal or normal combustion, compression, or at or near ignition temperatures (above if pre-ignition is a concern) . It is desireable that dissociation acts to quickly diffuse unburned vapors in front of the flame front, whereby burning velocity is increased. It also is particularly desireable that said vapor structure and/or the ECS compound, itself, have high latent heats of vaporization (enthalpy of vaporization) , particularly those equal to or greater than 28.0 jK mole "1 , at the compounds boiling point.
  • enthalpies of vaporization are those equal to or greater than 21, 22, 23, 24, 26, 27, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 40, 42, 43, 45, 47, or higher, JK mole " 1 . Generally, the higher the better.
  • Preferred boiling point temperatures of ECS compounds are those below 350°C, 325°C, 300°C, 275°C, 250°C, 225°C, 200°C, 175°C, 170°C, 160°C, 150°C, 140°C, 130°C, 120°C, 110°C, 105°C, and 100°C.
  • Preferred latent heats of vaporization of ECS compounds at 60°F are those equal to or greater than 75, 100, 110, 120, 130, 135 140, 145, 150, 155, 150, 160, 165, 170, 180, 190, 200, 210, 220, 230, 240, 250, 270, 290, 300, 325, 350, 375, 400, 425, 450, 475, 500 btu/lb, or more.
  • the latent heat of vaporization of the ESC compound be at least the same as, but more preferably 1.0%, 2.0%, 5.0%, 10%, 25%, 50%, 75%, 100%, 150%, 200%, 250%, 300%, or greater, than any unadjusted base or co-fuel to which the compound might added. Normally, the higher the differences the better. Applicant has discovered, the higher the relative difference in heat of vaporization, the higher, for example, intake charges can be cooled and the greater the improvements in volumetric efficiency.
  • ECS compounds are their superior flame propagation velocity features.
  • flame velocities should be equal to or greater than 40, 43, 45, 46, 48, 50, 52, 54, 56, 58, 60, 65, 70, 75, 80, 85, 90, 100, 110, 120, 130, 140, 150 cm/sec.
  • Flame velocities of ECS compounds herein may be measured independently or in the presence of a preferred metallic. Flame velocities of ECS compounds in the presence of a metallic are generally expected to be greater, than absent said metallic.
  • preferred laminar flame propagation velocities should exceed 55 cm/sec. The higher the better. It is preferred that the flame velocity of an any ECS compound as measured in laminar bunsen flame be at least .05% to 1.5%, 1.0% to 3.0%, 2.0% to 4.0%, 3.0% to 6.0%, 5% to 10%, 7% to 20%, 8.0% to 30.0%, 10% to 40%, 15% to 60%, 30% to 200%, 50% to 300%, or more, than unadjusted co-fuel. It is preferred that ECS compounds rapidly decompose at temperatures slightly to moderately higher than ignition temperatures but below combustion temperatures. Decomposition at higher or even lower temperatures is contemplated, including those below ignition temperatures. However, in the case of gasolines pre-ignition should be avoided.
  • ECS compounds which are not consumed in combustion, rapidly decompose when emitted in the atmosphere after combustion.
  • Preferred decomposition have half lives less than 20, 15, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1 days and more preferred half lives less than 24, 22, 20, 18, 16, 14, 12, 10, 8, 6, 4, 2 hours or less. Most preferred half lives are less than 1.0, 0.5, 0.25 hours or less.
  • ECS compounds be thermally stable in normal handling and operating temperatures up to approximately 150°F-300°F, but readily decomposes at approximately temperatures approaching 300°F to 800°F, 300°F to 500°F, more preferably at 400°F to 500°F.
  • Preferred fuel chain characteristics of Applicant's organic ECS compounds are those containing limited number of carbon atoms in chain with 6, 5, or 4 or fewer atoms preferred. 3 or 2 carbon atoms or a single carbon are more preferred. Generally, the shorter the carbon chain the length the more preferred the ESC compound.
  • a ECS compound comprising: a maximum carbon chain length of 5, 4, 3, 2, or 1 carbon atom(s) ; a negative heat of formation of -90, -60 kcal/mole, or less, including a positive heat of formation; a melting point of less than 20, 10, 5, 0, -10, -20, -30, -50 °C, or lower; a boiling temperature greater than 25, 30, 40, 42, 43, 44, 60, 80, 90, 100, 110, 120, 140 °C, or greater; a Bunsen burner laminar flame speed in excess of 40, 45, 48, 50, 55, 60, 65 or 70 cm/sec; a latent heat of vaporization exceeding 80, 90, 100, 120, 130, 140, 145, 150, 155, 160, 165, 170, 175, 180, 185, 190, 195, 200, 205, 210, 215, 220, 230, 235, 240, 250, 300, 380, 400, 450, 500 BTU/lb at 60°F; thermal
  • Example 13 wherein the composition is fuel soluble and contains oxygen by weight in excess of 15%, 20%, 25%, 30%, 33%, 40%, 45%, 50%, 52%, 55%, 58%, 60% or more.
  • Non-limiting examples of compounds that Applicant has initially identified that contain ECS structure and that are likely to be effective in accomplishing this object include: hydrogen, carbon monoxide, methylene di methyl ether (also known as methylal, dimethoxy methane) , carbonic acid dimethyl ester (also known as dimethyl carbonate) , diethyl carbonate, methyl tertiary butyl ether (MTBE) , ethyl tertiary butyl ether (ETBE) , methyl tertiary amyl ether, methanol, ethanol, propanol, tertiary butyl alcohol, dimethyl ether, other .
  • hydrogen hydrogen
  • carbon monoxide also known as methylal, dimethoxy methane
  • carbonic acid dimethyl ester also known as dimethyl carbonate
  • diethyl carbonate diethyl carbonate
  • MTBE methyl tertiary butyl ether
  • ETBE ethyl ter
  • C 6 lower molecular weight alcohols diethylene glycol dimethyl ether, diethylene glycol diethyl ether, dimethyl ether diethyl ether, isopropyl ether, diisopropyl ether, nitromethane, nitroethane, nitropropane, nitrous oxide, dinitrous oxide, nitric oxide, ozone, water, gas hydrates (methane hydrate) , hydrogen peroxide, hydroperoxides and similar compounds. Applicant believes many other compounds exist that have not yet been identified, which perform ECS function.
  • ECS compounds may less satisfactory than others, or altogether unsatisfactory.
  • ECS compound may be very effective in non-regulated aviation, advanced jet applications, diesel applications, but unacceptable for automotive purposes.
  • Other ECS compound suffer potential health hazards.
  • MTBE has application in many fuels, but is now recognized as a possible carcinogen or allergen, having a long atmospheric half life.
  • ECS compounds will be employed in different fuel systems, and that liquid fuel soluble ECS compounds are contemplated in generally all fuel state systems.
  • Solid ECS compounds are normally employed in solid fuel systems, but may be incorporated into liquid or gaseous systems by appropriate means.
  • ECS compounds in various systems will elicit differing response. For example, it is expected that in alcohols will elicit lower combustion and exhaust temperatures than ethers, due to differences in latent heats of evaporation. It is also expected that lower molecular weight alcohols and carbonates, decompose at an accelerated rate, when compared to ethers.
  • ECS compounds may be solids, liquids, gases, and mixture, and may be selected from alcohols, amines, amides, oxalates, esters, di-esters, glycols, ethers, aldehydes, ketones, glycols, glycol ethers, peroxides, phenols, carboxylic acids, acetic acids, oxalic acids, boric acids, peroxides, hydroperoxides, esters, othroesters, aldehydic acids, ketonic acids, hydroxyacids, orthoacids, anhydrides, acetates, acetyls, orthoborates, formic acids, nitrates, di-nitrates, carbonates, di-carbonates, nitro-ethers, and the like.
  • ECS compounds include compounds containing carbethoxy, carbomethoxy, carbonyl, carbonyldioxy, carboxy, ethoxalyl, glyoxylyl, methoxy, methylenedioxy, glycolyl, and/or hydroxyl components and/or radicals.
  • Non-limiting examples include oxalates, carbonates, acetyl acetones, dimethyl glyoximes, ethylenediamine tetraacetic acids, and the like.
  • ECS compounds include ethylene, propylene, tertiary butylcumyl peroxide, butylene, 1,2-butadiene, 1, 3-butadiene, actetylene hydrocarbons including acetylene, allylene, butine-1, pentine-1, hexine-1; substituted hydrazines, including methylhydrazine, symmetrical dimethylhydrazine, unsymmetrical dimthylhydrazine, hydrazine; ethane, propane, butane, diborane, tetraborane, penta bornane, hexaborane, decaborane, aluminum borohydride, beryllium borohydride, lithium borohydride, ammonium nitrate, potassium nitrate, nitric acid, ammonium azide, ammonium perchlorate, lithium perchlorate, potassium perchlorate, nitrogen trioxide, nitrogen dioxide, hydrazoic acid, dicyan
  • ECS compounds include di-tertiary butyl peroxide, alkyl peroxides, alkyl hydroperoxides, acetyl hydroperoxides.
  • peroxides include tertiary butylcumyl peroxide, di(tertiaryamyl) peroxide, tertiary butyl hydroperoxide, di-tertiary butyl hydroperoxide, tertiary amyl hydroperoxide, acetyl tert- butyl hydroperoxide (CH3)3COOH), cyclohexyl (acetyl) hydroperoxide, ethyl (acetyl) hydroperoxide (C2H500H) , diacetyl peroxide, diethyl peroxide, dimethyl peroxide, methyl hydroperoxide (CH300H) , acetyl benzoyl peroxide, acetyl peroxide, formic acid, t
  • R-00 R-OO-R, R-COOOCO-R, R-COOCOO-R, R-CO-R, R-COO-R, H3C0-R, C02- R, or R-CO-R, wherein any R may be void or absent structure.
  • R may be different, same, or multiples of itself.
  • R may be 2(R), 3 (R) , 4 (R) , and wherein R may be a hydrogen, carbethoxy, carbomethoxy, caronyIdiocy, carboxy.
  • ethoxalyl ethoxy
  • ethylenedioxy glycolyl
  • glyoxylyl hydroxy, methoxy, methyl, ethyl, propyl, butyl, pentyl, methylenedioxy, acetonyl, acetoxy, acetyl, alkyloxy, benzoxy, or benzoyl radical.
  • Applicant's preferred OH combustion enhancement structure is common to his alcohols, most notably methanol.
  • ECS chemistry may contain certain metals
  • certain metals may contain ECS chemistry and/or be propellant fuels, ect.
  • ECS chemistry will have multiple utility, and may, for purposes of this disclosure, represent both the metallic and ECS compound, as set forth herein. Applicant expects a small number of ECS compounds will actually be commercially suitable and elicit optimum performance.
  • certain ECS compounds will be co-ECS compounds (e.g. co-solvents) and be required to assist the ussage of one or more ECS compounds.
  • Co-ECS compounds may also be co-solvents.
  • ECS co-solvent For example, it may necessary to increase flash point temperatures, reduce RVP, or reduce combustion temperatures of certain high velocity ECS compounds by admixing a ECS co-solvent (see below) . It is also expected that certain synergies exist between individual(s) or classes of ECS compounds, enhancing their respective capability.
  • the practice of this invention also contemplates admixing water and/or co-ECS compound by separate means, including separate fuel injection.
  • a fuel soluble ECS compound having a melting point of less than -50°C, -25°C -5°C, 0°C, 5°C, 10°C, and a boiling point not less than 40°C, 60°C, 75°C, 85°C, or greater.
  • Example 15 A post-ignition, pre-combustion composition containing a diffusion increasing amount of ECS, whereby combustion burning velocity is increased.
  • Example 16 A pre-ignition vapor composition containing a diffusion increasing amount of ECS, whereby a minimum flame propagation of 60 cm/sec is achieved by a maximum spark energy of 0.2 mJ, preferably 0.15, 0.10 or less mJ.
  • Example 17 A pre-ignition vapor composition containing a diffusion increasing amount of ECS, whereby a minimum flame propagation of 60 cm/sec is achieved by a maximum spark energy of 0.2 mJ, preferably 0.15, 0.10 or less mJ.
  • composition of examples 15 and 16, wherein the composition is a combustion composition.
  • those elements, ECS compound/components wherein the above enhanced combustion structure exist, in high relative concentrations and/or which become intermediate and/or initial/pre-combustion and/or combustion structure/product, especially in the vapor charge and/or in the vapor of compression and/or combustion, and which causes rapid diffusion of the flame front, and/or rapid diffusion of uncombusted vapors and/or otherwise accelerates and/or improves combustion are most preferred.
  • ECS compounds preferably should be soluble in the fuel composition to which it is added.
  • dispersants or other means including mutual solvents, may be employed.
  • insoluble or partially soluble ECS compounds may be employed in emulsions and/or by other means, including by separate injection, and/or by hybrid means.
  • ECS compounds need not contain ECS structure, if their use or combination otherwise generates or causes to be generated ECS structure in the compression, ignition and/or combustion process.
  • a compound, which enhances the formation of ECS in the combustion process is deemed to be an ECS compound.
  • ECS compounds with higher latent heats of evaporation, which reduce compression, post ignition (pre- ignition) and/or reduce combustion temperatures, are particularly preferred.
  • Emulsions or other combination including those containing ECS, are also desireable, particularly those capable of causing vapor fraction droplets to explode or to explode outside the spray or to otherwise cause quick diffusion of the vapor fraction.
  • ECS emulsion compounds include water, methanol, hydrogen peroxide, rape seed oil, and the like.
  • fuels containing water are contemplated, such as aqueous gasolines, diesels, jet aviation fuels, distillate fuels, and the like.
  • Preferred ECS compounds are relatively simple in molecular structure. In the case of liquid fuels, ECS compounds that do not adversely increase the vapor pressure or flash point of the base fuel at ambient or operating temperatures are more preferred. Acceptable blending vapor pressures range from 0.5 to about 50.0 psi.
  • More desireable blending vapor pressures range from 0.5 to 15.0, 0.5 to 12.0, 0.5 to 10.0, 0.5 to 9.0, 0.5 to 8.0, 0.5 to 7.0 psi, or 0.5 to 6.0 psi, or 0.5 to 5.0 psi, or from 0.5 to 3.0, 0.5 to 1.5, 0.5 to 1.0 psi or less.
  • Individual vapor pressure ranges include 5.4, 5.6, 5.7, 5.9, 6.1, 6.3, 6.6, 6.8, 6.9, 7.1, 7.2, 7.5, 7.6, 7.7, 8.1, 8.3 psi.
  • Vapor pressure and flash point temperatures can be mitigated or controlled via practice set forth below. It is preferred that ECS compounds employed directly
  • ECS compounds having flash points of -10°F, 5°F, 10°F, 15°F, 20°F, 25°F, 30°F, 40°F, 50°F, 60°F, 70°F, 80°F or greater are acceptable.
  • flash point temperatures above 30°C, 38°C, 40°C, 60°C, 70°C, 80°C, 90°C, 100°C, 105°C, 110°C, 120°C, 130°C or greater are acceptable.
  • an ECS compound's propensity to reduce flash point temperatures may be mitigated or improved by appropriate means (e.g. co-solvents, salts, co- fuel tailoring, ect.), which is contemplated in this invention (see Mitigation Practice, below) .
  • the compound's causal increase in burning velocity and/or reduction of combustion temperature must be weighted cost of flash point and vapor pressure improvements attributed to mitigation means.
  • ECS compounds which are non-corrosive and/or which do not adversely effect seals or elastomers are preferred.
  • corrosion inhibitors are contemplated, if necessary.
  • a suitable inhibitor is "DCl 11" available from Du Pont. It is contemplated that this inhibitor should be used at the approximate concentrations of 20 to 30 ppm.
  • Preferred ECS compounds employed in liquid fuels should have low melting points, below 32°F and preferably below -0°F, or more preferably below -40°F or below -50°F, and most preferably below -80°F. Lower temperatures are also preferred. However, temperature reducing additives such as ethylene glycol monomethyl ether may be employed, if necessary. Again, the ECS compound's causal increase in burning velocity and/or reduction of combustion temperature must be weighted against less than desireable melting points.
  • the ECS compound not be toxic, or at least not highly toxic, or associated with adverse toxicity. It is also preferred that the compound be pumpable at low temperatures, have suitable ignition quality, and be thermally stable as a fuel additive, although additives to correct poor thermal stability may be employed.
  • ECS compounds need not contain oxygen. However, ECS compounds containing oxygen are preferred. Those containing at least 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, or 50% or more oxygen by weight are desireable. Oxygen concentrations greater than 25% by weight are preferred. Most preferred are greater than 40% concentrations.
  • a method of creating vapor phase combustion comprising: vaporizing or injecting a fuel of an average particle size not exceeding 70, 60, 50, 40, 30, or less, microns under suitable pressure into an air breathing combustion system; said fuel vapor solely comprised of at least one fuel soluble non-leaded metallic whose oxide's heat of formation is negative and exceeds about -200,000, - 225,000, -250,000, -275,000, -300,000, -325,000 or -350,000 gr calories/mole, and at least one ECS compound having latent heat of evaporation exceeding about 150, 160, 165, 170, 175, 180, 185, 190, 195, 200, 205, 210, 215, 220, 225, 230, 240, 250 btu/lb, or greater, ⁇ 60°F and a laminar burning velocity exceeding 40, 42, 43, 44, 45, 46, 47, 48, 49, 50, 52, 54, 56, 58, 60 cm/sec; introducing sufficient temperature to the fuel
  • Example 19a The composition of 19, additionally containing an oxidant.
  • a composition of matter comprising at least one ECS compound having a latent heat of evaporation exceeding 200 btu/lb @ 60°F and a laminar burning velocity exceeding 48 cm/sec, and a combustion improving amount of at least one fuel soluble high heating value non-leaded metallic whose oxide's heat of formation is negative and exceeds about - 200,000 or -350,000 gr calories/mole, said metal or metallic containing compound, is selected from the metals consisting of aluminum, boron, bromine, bismuth, beryllium, calcium, cesium, chromium, cobalt, copper, francium.
  • Example 21 The composition of Example 20, additionally comprising a substantial majority, majority, substantial minority, or minority of at least one co-fuel; said combination characterized as having latent heat of vaporization and burning velocity greater than co-fuel alone; whereby combustion temperature of combined fuel is reduced at least 5°F, 10°F, 20°F, 30°F, 40°F, 50°F, 60°F, 70°F, 80°F, 90°F, 100°F, 120°F, 140°F, 150°F, 160°F, 175°F, or lower, compared to co-fuel alone.
  • Example 19 wherein the metallic vapor is derived from a metallic compound having a high heating value exceeding 4,000, 4,500, 5,000, 5,500, 6,000, 6,500, 7,000, 7,500, 8,000, 8,500, 9,000, 9,500, 10,000, 10,500, 11,000, 11,500, 12,000, 12,500, 13,000, 13,500, 14,000, 14,500, 15,000, 15,500, 16,000, 16,500, 17,000 Kcal/kg, selected from the metals group consisting of aluminum, boron, bromine, bismuth, beryllium, calcium, cesium, chromium, cobalt, copper, francium, gallium, germanium, iodine, iron, indium, lithium, magnesium, manganese, molybden, nickel, niobium, phosphorus, potassium, pallium, rubibidium, sodium, tin, zinc, praseodymium, rhenium, salane, vanadium, and mixture.
  • the metals group consisting of aluminum, boron,
  • the pre-combustion vapor is a product derived from dimethyl carbonate and a cyclomatic manganese compound and wherein the ratio of dimethyl carbonate to organo manganese is less than 2,500 parts to one.
  • MMT manganese , whereby the parts ratio of DMC to manganese, ranges from those equal to or less than 100,000:1 to 1:1, 10,000:1 to 1:1, 5,000:1 to 1:1, 2,500:1 to 1:1, 2,000:1 to 200:1, 3,000:1 to 1,000:1, 2,500:1 to 500:1, 2,000:1 to 50:1; 1,500:1 to 100:1, 1250:1 to 1:1, 1000:1 to 1:1, 750:1 to 50:1, other acceptable ranges of 500:1 to 20:1, 250:1 to 15:1, 200:1 to 3:1, 50:1 to 5:1; 20:1 to 10:1; and 15:1.
  • Individual concentrations include 2,000:1, 1750:1, 1550:1, 1250:1, 1050:1, 900:1, 800:1, 750:1, 650:1, 550:1, 500:1, 450:1, 350:1, 300:1, 250:1, 200:1, 150:1, 125:1, 100:1, 85:1, 75:1, 70:1, 65:1, 60:1, 55:1, 50:1, 45:1, 40:1, 35:1, 30:1, 25:1, 20:1, 15:1, or 10:1. Rato's will vary depending upon application.
  • the DMC to metal ratio be less than 5,000:1, 4,500:1, 4,000:1, 3,500:1, 3,000:1, 2,500:1, 2,000:1, 1,500:1, 1,000:1, 950:1, 900:1, 850:1, 800:1, 750:1, 700:1, 650:1, 600:1, 550:1, 500:1, 450:1, 400:1, 350:1, 300:1, 250:1, 200:1, 150:1, 100:1, 90:1, 80:1, 75:1, 65:1, 60:1, 55:1, 50:1, 45:1, 40:1, 35:1, 30:1, 25:1, 20:1, or lower.
  • Applicant's co-fuels are generally carbonaceous or hydrogenous or other compound, or hydrocarbonaceous, and/or other compounds based, including mixture, fuels capable of combustion. It is an express embodiment of this invention that co-fuels may be employed as minority, substantial minority, majority, or substantial majority components of a ECS/co-fuel combination.
  • the ratio of ECS to co-fuel may vary from 1000:1, 100:1, 90:1, 75:1, 50:1, 40:1, 30:1, 25:1, 20:1, 15:1, 12:1, 10:1, 8:1, 6:1, 5;1, 4:1, 3:1, 2:1, 1:1, 1:2, 1:3, 1:4, 1:5, 1:6, 1:7, 1:8, 1:10, 1:15, 1:20, 1:40, 1:50, 1:100.
  • the ESC vapor be a substantial minority or majoritarian component of any ECS/co-fuel combination, such that said ECS vapor, on a mass/volume basis, is a substantial minority or the majoritarian vapor.
  • the ECS fuel component will represent the minority component, ultilizing existing fuels and distribution systems and combustion system.
  • Applicant's initial combinations (e.g. ECS fuel + co-fuel) meet all the particularities of ASTM, government and/or industry requirements regarding the co-fuel employed.
  • resultant combined fuel may need adjustment or reformulation to meet minimum ASTM and/or government standards.
  • the combined fuel prior to reformulation may not meet heats of combustion requirements due to the lower heats of certain ECS compounds.
  • additional high calorific material may need to be added.
  • the base co-fuel may be tailored so that the addition of ECS fuel does not avoid ASTM or government specifications.
  • Applicant's preferred co-fuels are generally those which enjoy high burning velocities, and higher latent heats of evaporatization than convention or current reformulated fuels. Applicant's co-fuels typically enjoy low or extremely low combustion emissions.
  • co-fuels be formulated to reduce to the maximum extent possible emissions of NOx, CO, C02, HC's, toxics, reactive ozone forming precursors, polynuculear aromatics, benzene, butadiene, formaldehyde, acetaldehyde, and/or any cancer causing or environmental harming substance, either now known or identified in the future.
  • Appliant's co-fuel's be formulated to reduce particulate emissions to the greatest extent possible. It is expressly contemplated that such fuels be formulated (or as a result of the addition of ECS fuel and metallic) have particulate emissions of a particle size less than 10.0, 7.5, 6.0, 5.0, 3.0, 2.5, 2.0, 1.5, 1.0, 0.5 microns, or smaller, and/or reduced to the maximum extent possible.
  • Applicant's co ⁇ fuels can contain reduced amounts of aromatics.
  • Aromatic volume concentrations normally will range from or less than 55, 50, 45, 42, 40, 37, 35, 30, 27, 25, 20, 18, 17, 16, 15, 14, 13, 12, 10, 9, 8, 7, 6, 5, 4, 3, 1 volume percent, or aromatic free. Ranges less than 40, 35, 30, 27, 25, 23, 20, 19, 18 percent, or less, are more desireable. Exa ple 26
  • the pre-combustion vapor additionally comprises a vapor derived from a co-fuel; said co-fuel characterized as being an alternative fuel, hydrogen, petroleum gas, liquefied petroleum gas, LPG- propane, LPG-butane, natural gas, natural gas liquids, methane, ethane, propane, n-butane, propane-butane mixture, fuel methanol, e.g. M 80, M 90, or M 85 fuels, fuel ethanol, biomass fuels, vegetable oil/ester fuels, rap seed methyl ester, soybean fatty acid esters, aqueous carboneous fuels (including aqueous gasolines and diesels, e.g.
  • Grade low sulfur No. 2-D, Grade No. 1-D, Grade No. 2-D, and Grade No 4-D (meeting ASTM standards) , and older grades Type C-B, Type T-T, Type R-R, Type S-M, reformulated diesel fuels (meeting CARB or Swedish standards) , low/no sulfur hydrotreated low/no aromatic distillate fuels, toluene fuels, substantially toluene fuels, naptha fuels, subtantially naptha fuels, fuel oils, including Grade 1, Grade 2, Grade 4 (light). Grade 4, Grade 5 (light). Grade 5 (heavy).
  • Grade 6 heavy diesel fuels for marine or railroad including those complying with ISO DIS 8217 and BS MA 100 standards, various distillate oils, distillate fuels, substantially distillate fuels, residual type oils, cycle oils, light cycle oils, light cycle gas oils, heavy cycle oils, heating oils, heavy cycle gas oils, vacuum oils, burner oils, furnace oils, coal liquids, SRC-II middle distillate coal fuels, near coal liquids, powdered coal, coal derivatives, coal, solid fuels, tar sand fuels, shale oil fuels, hydrazine, ammonia acetylene, and/or any fuel meeting ASTM specifications, EPA certification standards, CARB or Swedish European standard, or meeting any industry and/or any government specification or regulation, present and future, including mixtures thereof; and optionally being non-leaded and a low sulfur or no sulfur and/or low or no phosphorus containing fuel.
  • Example 27 The above example, where the combination composition from which the vapor is derived is characterized as meeting all ASTM, government, and industry specifications and standards of said co-fuel, including minimum distillation temperature, flash point, additive, vapor pressure, composition ranges, ingredients, emissions, heats of combustion, and the like as set forth in the specification.
  • Example 29 The method 26, wherein pre combustion vapor additionally comprises at least one additive or detergent, selected from additives which control combustion chamber deposits, valve intake deposits, fuel injector deposits, or other additive as set forth in the specification.
  • additives which control combustion chamber deposits, valve intake deposits, fuel injector deposits, or other additive as set forth in the specification.
  • Applicant's invention it is an express embodiment of Applicant's invention to operate combustion systems under load conditions, especially moderate to heavy load. Applicant's invention is well suited for larger engines, under such load conditions.
  • Example 33a The method of Example 33a, wherein said engine is a heavy duty diesel (including Volvo TD 163 ES, TD 123 ES, TD 63 ES, D 12 engines) , truck, locomotive, marine, heavy industrial, or similar engine.
  • a heavy duty diesel including Volvo TD 163 ES, TD 123 ES, TD 63 ES, D 12 engines
  • vapor additionally contains at least one vapor from an engine, carburetor and/or induction/injection and/or combustion chamber deposit system cleaning agent or detergent/dispersant
  • system cleaning agent or detergent/dispersant non- limiting examples include commercially available long-chain dibasic acid derivatives (e.g. succinimides such as HiTec 4450) , long-chain aliphatic polyamines (e.g.
  • polyisobutenyl polyamine polyisobutenyl polyamine
  • long chain Mannich bases and/or an ashless detergents, including a polyether amine, polyalkenyl amine, alkenyl succinimide, poly ether amine, polyether amide amine, and mixture) , and/or an antioxidant, demulsifer, emulsifer corrosion inhibitor, aromatic solvent, scavenger, diluent oil, mutual solvent, metal deactivator, anti- static, dehazer, drag reducing, anti-foam, re-odorant, stabilizer, flow improver, wax crystal modifier, cetane or octane enhancer/improver, combustion improver, lubricity improver additive, and/or mixture.
  • ashless detergents including a polyether amine, polyalkenyl amine, alkenyl succinimide, poly ether amine, polyether amide amine, and mixture
  • an antioxidant demulsifer, emulsifer
  • example 19-27 wherein said vapor is combusted in an engine or combustor selected from group consisting of rocket engine, Brayton cycle engine, gas oil turbine, aviation jet turbine, diesel (direct injection, turbo charge, lean burn, swirl, varible valve timing and lift) , marine, locomotive, aviation gas engine, gasoline/automotive engines (non-limiting examples include low emission, ultra low emission, variable-valve timing and lift, direct fuel injection, three-way catalyst systems, lean burn engines) , oil burner, reside burner, oil furnace, high performance burners (for example with flame envelopes with heat release rates of 10,000,000 BTU/ft 3 -hr) , gas burner, gas furnace, internal compression engine, spark- ignited internal combustion engine, lean burn, fast burn, external combustion Stirling or Rankine engine, Otto cycle engine, Miller cycle, two stoke, four stroke, or catalyst system.
  • an engine or combustor selected from group consisting of rocket engine, Brayton cycle engine, gas oil turbine, aviation jet turbine, diesel (direct injection, turbo charge
  • Applicant's co-fuels have individual LHV's higher than a normal unadjusted conventional or reformulated fuel (base line) at the date of this invention.
  • LHV increases of at least 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5, 10.0, 12.5, 15.0, 17.5, 20.0, 22.5, 25.0, 27.5, 30.0 percentage, or more, compared to unadjusted base line fuel (conventional or reformulated) , are contemplated and desireable.
  • Applicant's base line fuels are ASTM, industry or equivalent fuels on date of this invention.
  • heavier fuels e.g. diesel, jet aviation, gas turbine fuels, etc.
  • lighter fuels e.g. diesel, jet aviation, gas turbine fuels, etc.
  • higher the boiling point temperatures of a fuel typically the lower the average LHV per unit of weight.
  • higher boiling components with latent heats of vaporization of less than approximately 40, 50, 60, 70, 80, 90, 100, 110, 120, 125, 130, 135, 140, 145, 150, 155, 160, 165, 170, 175, 180 btu/lb, or alternatively those less than 650, 700, 750, 760, 770, 780, 790, 800, 810, 820, 830, 840, 850, 860, 880, 900, 905, 910, 915, 920, 925 btu/gal, or alternatively, those components lower than the equivalent average latent heat of vaporization for an unadjusted fuel, be reduced or removed from the fuel composition, whereby average latent heat of vaporization for the new formulated fuel is greater than the unadjusted base line fuel.
  • optiminal reformulating of co-fuels not only includes reduced end point and T-90 distillation temperatures and modification to T-50 temperatures, etc., together with fuel substitutent modification (e.g. reducing sulfur, aromatics, olefins, etc.), but additionally requires elevating average LHV, by at least 2.0% (5%, 10% more preferred), or more, over the unadjusted base line fuel. Absent simultaneously elevating LHV's, one may not acheive the full benefit of the invention.
  • fuel substitutent modification e.g. reducing sulfur, aromatics, olefins, etc.
  • reducing T-90 and end boiling temperatures additionally requires reducing or eliminating low LHV components while similtaneously increasing high LHV conponents, such that resultant co-fuel enjoys enhanced LHV.
  • This is a significant departure from the prior art.
  • Applicant has found aromatic hydrocarbons, alkenes, cyclanes, alkanes, in order of their ranking, to be preferred for purposes of achieving elevated LHV's. It is noted that as boiling temperatures raise aromatic LHV's decline. Between approximately 70°C to about 130°C preference between alkenes and cyclanes are about the same. Between 160°C-180°C to approximately 300°C, bi-cyclic hydrocarbons, aromatic hydrocarbons, and alkanes, in order of their ranking, are preferred.
  • Construction of fuels to acheive increased latent heats of vaporization should be tempered by other factors, including known hazardous emission features of certain components, minimum energy, calorific or heating requirements, buring velocity improvement, etc. For example, while benzene and certain xylenes have elevated
  • Applicant's co-fuels may also have latent heats of vaporization outside this range and be acceptable.
  • latent heats of vaporization equal to or in excess of 100, 105, 110, 115, 120, 125, 130, 135, 140, 145, 150, 155, 160, 165, 170, 175 BTU/lb, or greater, are acceptable. More desireable are those exceeding 135, 140, 145, 150, 152, 154, 155, 158, 160, 165 BTU/lb, or more.
  • latent heats of vaporization equal to or in excess of 85, 90, 95, 100, 105, 110, 115, 120, 125, 130, 135, 140, 145, 150 BTU/lb, are acceptable.
  • Those in excess of 110, 115, 120, 125, 130 BTU/lb, or more, are desireable.
  • LHV's should exceed 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 110, 115, 120, 125, 130, 135, 140, 145, 150, 155, 160, 165 BTU/lb.
  • Those in excess 85, 90, 95, 100, 110, 115, 120, 125, 130, 135, 140, 145, 150, 155, 160, 165 BTU/lb. are more desireable.
  • Those in excess of 120, 125, 130, 135, 140, 145, 150, 155, 160, 165 BTU/lb. are preferred.
  • Heavy diesel's LHV's should exceed 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 100, 105, 110, 115, 120, 125, 130, or more, BTU/lb. Those in excess of 100, 102, 110 BTU/lb are desireable.
  • the fuel be constructed so that its specific heat be equal to or greater than 0.43, 0.44, 0.45, 0.46, 0.47, 0.48, 0.49, 0.50, 0.51, 0.52, 0.53, 0.54 BTU/lb°F, or greater. Those above 0.46 BTU/lb°F are preferred. It is further desireable that the co-fuel be constructed such that its density is maximized. For example, hydrocarbons boiling from about 60°C to about 110°C, cylcanes, alkenes, alkanes, in order of their ranking are preferred. From about 110°C to about 160°C, aromatic hydrocarbons are ranked the highest. From about 160°C to about 280°C, bi-cyclic hydrocarbons are ranked the highest.
  • Example 35 A hydrocarbon fuel composition, selected from the group of co-fuels disclosed above, comprising otherwise a conventional or reformulated composition thereof, whereby said fuel is additionally formulated/reformulated such that its latent heat of vaporization is at least 1%, 1.5%, 2%, 2.5%, 3%, 4%, 5%, 6%, 7%, 8%, or greater, compared to the unadjusted base fuel, and whereby said fuel is free of ECS structure and/or metallic compound.
  • Example 36 A hydrocarbon fuel composition, selected from the group of co-fuels disclosed above, comprising otherwise a conventional or reformulated composition thereof, whereby said fuel is additionally formulated/reformulated such that its latent heat of vaporization is at least 1%, 1.5%, 2%, 2.5%, 3%, 4%, 5%, 6%, 7%, 8%, or greater, compared to the unadjusted base fuel, and whereby said fuel is free of ECS structure and/or metallic compound.
  • Example 36 A hydrocarbon fuel composition, selected from
  • the additionally reformulated hydrocarbon fuel composition is a conventional or reformulated gasoline having a latent of heat of vaporization of at least 0.5%, 1.0%, 1.5%. 2.0%, 2.5%, 3.0%, 3.5%, 4.0%, 4.5%, 5.0%, 6.0%, 6.5%, 7.0%, 7.5%, 8.0%, or more, greater than an unadjusted conventional or reformulated composition at the date of this invention.
  • Applicant has found that C2 to C6 acetylene hydrocarbons offer exceptional burning velocities. C4 to C6 olefins and de-olefins are attractive and offer good velocities. C3 cyclo paraffins and benezene are also attractive. Less attractive are paraffins, C7 plus aromatic hydrocarbons. Typically, the shorter the carbon chain length, C6, C5, C4, C3 or lower, the higher the burning velocity. In terms of carbon atoms of the same chain length, n-alkynes are preferred over n-alkenes over n-alkanes.
  • Burning velocity of unsaturated hydrocarbons is higher than saturated hydrocarbons of the same chain length. In unsaturated hydrocarbons with one saturated bond, burning velocity is decreased relative to the increase in molecular weight. Naphthenes and aromatic hydrocarbons have similar rates as paraffins.
  • the preferred practice of formulating base fuels to increase their latent heats of vaporization is typically by removal of higher boiling material (e.g. with low latent heats of vaporization and/or low burning velocity) until said oxygen/metals free base hydrocarbon composition has an average latent heat of vaporization equal or greater than 780, 800, 820, 830, 840, 850, 860, 870, 880, 890, 900, 905, 910, 915, 920, 925, 930, 940, 950, 970, 990, 1000, 1050, 1100, 1150, 1200, 1250, 1300, 1350 btu/gal or more. It is desireable that it be greater than 860, 880, 900, 910 btu/gal, or more.
  • the base co-fuel's latent heat of vaporization should be in excess of 100, 110, 115, 120, 125, 130, 135, 140, 145, 150, 155, 160, 165, 170, 175, 180, 185, 190, 195, 200, 205, 210 BTU/lb, or more.
  • co-fuels contain necessary additives to reduce existing and/or control future combustion chamber, injector, induction system, and other fuel or combustion related deposits (see below) , which directly interfere or inhibit combustion and/or cause emission degradation.
  • gasoline co-fuels contain elevated octane value (R+M)/2 over current convention fuels and that diesel fuels contain elevated cetane value over conventional fuels.
  • Applicant's co-fuels be formulated with greatest reductions, and if possible, be free of sulfur, benzene, polynuculear aromatics, and any substance now known or later learned to be hazardous to the environment or human health.
  • any substance now known or later learned to be hazardous to the environment or human health For example, limitations of di and tri aromatics and particulate matter causing and/or ozone forming aromatics are contemplated.
  • Applicant's co-fuels contemplate distillation fractions, which reduce hazardous emissions and/or cancer causing compounds.
  • Applicant's co-fuels will be free of lead, phosphorous, sulfur, silicon and/or other harmful metallic or non-metallic compound.
  • metals contemplated by this invention requires that combustion be improved and/or pollutants reduced.
  • fuel composition, combustion system, combustion temperatures and combustion burning velocities, fuel injection factors, carbon, hydrogen, oxygen contents, and the like, metallics and their respective concentrations can vary greatly.
  • the metallic may itself be employed as a propellant or co-propellant.
  • the hydrogen content of the metallic and/or metallic containing fuel should be maximized, to the extent possible.
  • metallic hydryls or other similar compounds are desireable.
  • Hydrogen containing salts are also desireable. It is an express embodiment of this invention that the combustion of the metallic be by means of vapor phase burning, e.g. wherein combustion does not take place on the surface of the metal, or on and/or within a molten layer of oxide covering the metal, typical of metallic combustion.
  • Applicant's vapor phase burning object is a very unique aspect of Applicant's invention and characterized by high burning rate and the presence of a luminous reaction zone that extends some distance from the metal's surface, where metallic oxide particles are formed in the submicron range. Vapor phase burning is also characterized has being highly expansive combustion, which yield the thermal and other improvements of Applicant's invention.
  • a method of combusting a metallic comprising: introducing a sufficient amount of free radicals having enhanced combustion structure into a combustion chamber; igniting and combusting a metal containing compound in presence of said free radicals at temperature below said metal's oxide boiling point (and preferably above said metal or metallic compound's boiling point); combusting said metal at an accelerated burning rate wherein vapor phase burning occurs, evidenced by a brilliant luminous reaction zone extending some distance from the metal's surface; wherein combustion metallic oxide particles are formed in the submicron range and/or remain in the gaseous state.
  • the metal's oxide boiling point should be greater than the boiling point of the metal. It is also preferred that the metal be introduced into the combustor as a vapor, however solid, atomized, or particulate introduction is acceptable, so long as the objects of this invention are met. In solid fuel applications, it is contemplated the metallic may be introduced as a solid. In hybrid applications, it may be introduced as either a solid or liquid.
  • combustion temperatures also be greater than the metal's (or metallic compound's) boiling temperature. It has been found that higher weight oxygen concentrations in fuel compositions, particularly with higher concentrations of enhanced combustion properties, permit higher acceptable metallic concentrations. Higher average ECS and/or co-fuel densities are often associated with higher acceptable metallic concentrations and higher heat release.
  • Metallic or manganese concentrations will vary substantially, non-limiting examples include those varying from 0.001 to over 7.50 grams Mn/gal, 0.001 to over 10.00 grams Mn/gal, 0.001 to over 15.00 grams Mn/gal, 0.001 to over 20.0 grams Mn/gal., 0.001 to over 30.00 grams/Mn/gal. , 0.001 to over 50.00 grams/Mn/gal.or more.
  • metallic concentrations equal to or greater than 1/64, 1/32, 1/16, 1/4, 3/8, 1/2, 5/8, 3/4, 1, 1.5, 2.0, 2.5, 2.6, 2.7, 2.8, 2.9, 3.0, 5.0, 7.5, 10, 15, 20, 25, 26, 27, 30, 33, 35, 40.
  • metallic/Mn concentrations can be on the order of 100, 150, 200, 225, 250, 300, 400, 200 to 500, 600, 800 to 1000.0 grams/gal, especially in hypergolic conditions. Concentrations above these ranges are also contemplated.
  • manganese ranges for more traditional co-fuel applications will generally range from about 0.001 to about 5.00 grams Mn/gal, 0.001 to about 3.00 grams Mn/gal, 0.001 to about 2.00 grams Mn/gal, 0.001 to 1.00 grams Mn/gal, 0.001 to about 0.50 grams Mn/gal, 0.001 to 0.375 grams Mn/gal, 0.001 to about 0.25 grams Mn/gal, 0.001 to 0.125 grams Mn/gal, 0.001 to 0.0625 grams Mn/gal, 0.034 to 0.125 grams Mn/gal of composition.
  • Other metallic or manganese concentrations include
  • manganese concentrations greater than 1.0% by weight of the fuel or approximately 25 to 33 grams/gal are also contemplated.
  • manganese concentrations greater than 1/64, 1/32, or 1/16 gr/gal are desireable.
  • Ranges vary depending upon the specific metallic, fuels, fuel weight, regulations, advance applications, thermodynamics, and the extent combustion systems are modified to enhance the accelerated low temperature high energy nature of Applicant's invention.
  • Applicant's metals also include a full range of combustion catalysts including ferreous picrate, potassium salts, etc.
  • potassium salts are contemplated including those commercially marketed by Shell Chemical, known as “SparkAid or SparkAde.”
  • Such salts may be employed in fuels at 0.01, 0.4, 0.5, 0.75, 1.0, 2.0, 3.0, 4.0, 5.0 parts metallic per million fuel, 1.0 to 4.0 ppm metallic being contemplated, with concentrations less than 16.0 ppm metallic also contemplated.
  • potassium salt or ferrocene ranges vary from 0.10 to 8.0, 4.0 to 9.0, 5.0 to 12.0, 6.0 to 13.0, 7.0 to 14.0, 8.0 to 15.0 ppm metal per million, 9.0 to 16.0, 10.0 to 20.0, 11.0 to 22.0, 12.0 to 25.0, 13.0 to 30.0, 14.0 to 40.0, 15.0 to 50.0, 16.0 to 60.0, 17.0 to 80.0, 18.0 to 100.0 parts metallic or salt per million fuel.
  • potassium concentrations greater than 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, 11.0, 12.0, 13.0, 14.0, 15.0, 16.0, 17.0, 18.0, 19.0, 20.0, 21.0, 22.0, 23.0, 24.0, 35.0, 26.0, 27.0, 28.0, 29.0, 30.0 ppm metal (or salt) are expressly contemplated and desireable, and depending upon ECS chemistry and mechanical means employed, said potassium concentrations or greater concentrations can be employed absent adverse metallic oxide formation.
  • Metallic concentrations that maximize combustion velocity and/or the other objects of this invention are expressly contemplated.
  • Applicant's fuels will contain that amount of at least one Mn and/or other non-lead metallic, which constitutes a combustion improving amount consistent with the fuel composition, stoichiometry, EC chemisty, combustion system, efficiencies and power desired, as well as legal and/or environmental considerations.
  • Applicant's fuel may be absent any metallic at all, e.g. be metal free. That is, Applicant's invention, by accelerating burning velocity and/or reducing combustion temperatures by employing chemical and/or mechanical means set forth herein, can be employed absent a metallic. That is, fuels which due to their combustion chemistry, and/or the operating conditions require reductions in hazardous combustion emissions and/or improvements in fuel economy, may employ Applicant's invention absent metallics.
  • any non-lead metal or any non-lead organo-metallic, non-lead inorganic metallics, oxygenated organo-metallic or oxygenated inorganic-metallic compounds, and/or any of their related high heat releasing and/or combustion improving metallic compounds, may be employed, mixed in varying proportions, and/or substituted for each other and/or replaced by any non-lead metallic or non-metallic (organic or inorganic) accomplishing the object of this invention.
  • Example 41 A combustion improving amount of a potassium salt and at least one organo-manganese compound, together with a fuel amount of at least one ECS compound.
  • Applicant's metals may be blended with one or more metals or non-metals in varying proportions to achieve synergistic improvements in heat releases, burning velocity (e.g. vapor phase burning) , thermal efficiency, emission reductions, power generation, and the like.
  • Contemplated metallics include all non-lead metals and related compounds whose combustion product has negative high heat of formation. As noted above, contemplated metals and/or metallic compounds should have high heats of combustion or heating values. Preferred negative heats of formation, for example of related metallic oxides, should exceed -100,000 to -150,000 gr calories/mole. More preferred are those exceeding -200,000, -225,000, -250,000, -275,000, -300,000, -325,000 -350,000, - 400,000 gr calories/mole., and greater.
  • the elemental metal be of a lower molecular weight, if practical.
  • Acceptable molecular weights of Applicant's metals include those less than 36; more acceptable include those less than 32; desireable molecular weights are those less than 26; more desireable are those less than 15; and even more desireable are those less than 14; with the most desireable being those less than 6.
  • Non-limiting examples of acceptable metals include aluminum, boron, bromine, bismuth, beryllium, calcium, cesium, chromium, cobalt, copper, francium, gallium, germanium, iodine, iron, indium, lithium, magnesium, manganese, molybdenum, nickel, niobium, phosphorus, potassium, pallium, rubibidium, sodium, tin, zinc, praseodymium, rhenium, salane, vanadium.
  • Applicant's metals may be organo-metallics or inorganic compounds.
  • Transition metals and metals found in 1A, IB, 2A, 2B, 3B of the periodic table of elements and their cyclomatic compounds, including cyclopentadienyl carbonyls are expressly desireable. Their preparation is set forth in U.S. Patents Nos. 2,818,416, 3,127,351, 2,818,417, 2,839,552 (incorporated by reference). Applicant has found that methyl cyclopentadienyl tricarbonyl groups to be effective.
  • Metals may be introduced into combustion with the ECS compound, or in a number of other ways, including via soluble compounds, mutual dispersents/solvents, colloidal media, suspension media, separate injection.
  • Applicant's invention also contemplates gaseous and solid ECS compounds and gaseous and solid co- fuels, metals and/or their related compounds that are gaseous and/or solid are also contemplated.
  • Applicant generally prefers elemental metals of low molecular weight and their compounds, although their heating value and the nature of any co-fuel and combustion system will also dictate choice. It is also preferred the combustion products of element and/or its compounds be environmentally friendly, e.g. low toxicity.
  • Non-limiting examples include cyclopentadienyl methylcyclopentadienyl iron, ferrocene, methylferrocene, and butadiene iron tricarbonyl, butadiene iron tricarbonyl, dicyclopentadienyl iron and dicyclopentadienyl iron compounds (see U.S. Patents 2,680,; 2,804,468; 3,341,311); nickel, cyclopentadienyl nickel nitrosyl; molybdenum hexacarbonyl, cyclopentadienyl molybdenum carbonyls (see U.S.
  • Patent 3,272,606, 3,718,444 compounds of technetium, magnesium, rhenium (see Canadian Patent #1073207.), diborane, tetraborane, hexaborane, and mixture. It is contemplated that organo and non-organic species of these metals will be employed.
  • Patent # 2,818,416 sets forth many such trimethylaluminum, triethylaluminum, dimethlylberyllium, boron hydrate, boron hydride, boron anhydride, triethylboron (C2H5)3B; compounds of boron with hydrogen and lithium, pentaborane, decaborane, barazole, aluminimum borohydride, beryllium borohydride, lithium borohydride, and mixtures thereof; light metals compounds (CH3)3NBH(CH3)3, (CH3)2BI, Be(C2H5)2, C4H9B(OH)2, A1(BH4)2, Be(BH4)2, LiBH4, B(OC2H5)3, (BO)3(OCH3)3; Zn(CH3)2.
  • a preferred cyclomatic manganese tricarbonyl is cyclopentadienyl manganese tricarbonyl.
  • a more preferred cyclomatic manganese tricarbonyl is methyl cyclopentadienyl manganese (MMT) .
  • Non-limiting examples of acceptable substitutes include the alkenyl, aralkyl, aralkenyl, cycloalkyl, cycloalkenyl, aryl and alkenyl groups.
  • Illustrative and other non-limiting examples of acceptable cyclomatic manganese tricarbonyl antiknock compounds include benzyleyelopentadienyl manganese tricarbonyl; 1.2-dipropyl 3-cyclohexylcyclopentadienyl manganese tricarbonyl; 1.2- diphenylcyclopentadienyl manganese tricarbonyl; 3- propenylienyl manganese tricarbonyl; 2-tolyindenyl manganese tricarbonyl; fluorenyl manganese tricarbonyl; 2.3.4.7 - propyflourentyl manganese tricarbonyl; 3- naphthylfluorenyl manganese tricarbonyl; 4.5.6.7- tetrahydroinden
  • Applicant has found potassium, magnesium, lithium, boran and their related high energy combustible compounds to be particularly effective, and thus desireable. Promoters such as Li and LH are also contemplated, if circumstances require.
  • non-lead metallics have been set forth in the specification. Additional non-limiting examples of non-lead simple binary metallic compounds. Ternary and higher compounds including salts are contemplated. Salts of ternary hydroxy acids are contemplated. Metallic perchlorates, sulfates, nitrates, carbonates, hydroxides, and others, are contemplated. Metal hydroxy compounds are desireable. Contemplated salts also include acid salts containing replaceable hydrogen. It is also within the scope and practice of this invention to employ oxygenated containing metallic compounds, including oxygenated organo metallic compounds. It is an express embodiment to use metallic compounds, which themselves are ECS compounds. Non-limiting examples would include lithium, iodine, boron based ECS compounds.
  • Contemplated oxygenated organo metallic compounds include metallic methoxy, dimethoxy, trimethoxy, ethoxy, diethoxy, triethoxy, oxalate, carbonate, dicarbonate, tricarbonate, and similar structure, including mixture thereof.
  • Such oxygenated organo-metallic compounds may be employed with or absent additional ECS compound (e.g. DMC) .
  • oxygenate organo metallic compounds including mixture, as neat fuel, with or absent additional ECS compound, with or absent a co-fuel, with or absent an additional metallic.
  • a metallic compound including homologue or analogue having a structure or structure similar to M1-OCH3, wherein Ml is a metallic having a valence of one or optionally having a valence greater than one, wherein the excess valence is occupied by a double bond oxygen and/or one or more methyl, hydrogen, hydroxy, ethoxy, carbethoxy, carbomethoxy, carbonyl, carbonyldioxy, carboxy, methyoxy, isonitro, isonitroso, methylenedioxyl radicals, and/or combination thereof; a metallic compound having a structure of M2-[OCH3]2, wherein M2 is a metallic having a valence of two or optionally having a valence greater than two wherein the excess val
  • M1-M4 may contain one or multiple metals, being either the same or differing metallic.
  • Non-limiting example of said structure containing a multiple same metal includes tetramethoxydiborine [ (CH30)4B2] .
  • Additional contemplated oxygenated-organo metallic structure includes M1-0(C0)0-M2, wherein Ml or M2 are the same or different metals having a valence of 1 or optionally valences greater than one wherein excess valence is occupied by additional metal, and/or Ml or M2 are substituted for a single or double bond oxygen, and/or by one or more methyl, hydrogen, hydroxy, ethoxy, carbethoxy, carbomethoxy, carbonyl, carbonyldioxy, carboxy, methyoxy, isonitro, isonitroso, methylenedioxyl radical and/or combination thereof.
  • Ml may be subsituted for single bond oxygen and/or by one or more methyl, hydrogen, hydroxy, ethoxy, carbethoxy, carbomethoxy, carbonyl, carbonyldioxy, carboxy, methyoxy, isonitro, isonitroso, or methylenedioxyl radical.
  • Non-limiting examples include lithium carbonate [Li202(CO)], potassium carbonate [k202(CO)J, sodium carbonate, cesium carbonate, copper carbonate, rubidium carbonate, lithium hydrogen carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate, potassium sodium carbonate, and the like.
  • C3 and C4 plus ethers may have metallic structure.
  • M'l-CH2-CH2-0-CH2-CH2-M'2 structure is contemplated wherein M'l and M'2 may be same or different metallic or wherein M'l or M'2 may be hydrogen or atom or radical (similar to those above) with one valence.
  • Other contemplated structure include metallic ketone, ester, alcohol, acid, and the like.
  • Non-limiting examples include M'l-C-OH3, wherein M'l is one or more metallic comprising valence of 3;
  • Other structure include M'l-C204, wherein M'l has a valence of 2.
  • M1-C-C-0-C-C-M2 structure is also contemplated wherein Ml and M2 may be same or different metallic or wherein M2 may be hydrogen or atom of one valence.
  • said oxygenated organo- metallic compounds have the fuel properties set forth above including those for ECS compounds, e.g. higher heats of vaporization, high burning velocities, decomposition characteristic (e.g. decomposition at post ignition pre- combustion temperatures into enhanced combustion or free radicals structure) , be thermally stable at normal handling temperatures, etc.; and have high heat and energy releasing characteristics of metals, etc..
  • Applicant's metallics be incorporated into liquid fuel systems by means of mutual solvents, as required. Or altnernatively, may be introduced into the combustor/combustion chamber by seperate means, including liquidification or gasification. Applicant's neat oxygenated organo- etallics should be relatively inexpensive to manufacture on a mass production basis.
  • Non-limiting examples include: fuel injection systems, especially those capable of directing a fine uniform atomized spray of vapors at enhanced dynamic flow rates and pressures at desirable angles into combustion chambers (combustors, burners, etc.) advanced evaporators, combustor designs enhancing combustion turbulence, higher combustion chamber inlet pressures (e.g.
  • Additional mechanical means include lean burn systems, catalytic combustors/combustion systems, pre-mixed combustor, diffusion flame combustors, lean premixed pre-evaporizing combustor, pre-evaporizing premixing combustor, variable compression ratio engines, direct injection, direct injection stratified charge engines, three-way catalytic systems, high swirl ratio to lean-air ratio systems (particularly during ignition to warm up) , varible-valve timing technology (e.g.
  • lean-burn and/or fast burn combustion systems are desireable for purposes of enhancing Applicant's object, particularly with advanced higher oxygen containing fuels.
  • Non-limiting examples include tumble air motion systems, four valve pent roof combustion chambers, swirl combustion chambers, indirect injection combustion chambers, indirect injection swirl combustion chambers, direct injection combustion chambers, and combustion chambers where geometry, hole diameter, spray angle, compression ratio, and the like, act to enhance turbulence are preferred.
  • Injection timing, fuel metering, injection pressures, injection pressure drop, nozzle design, inlet air temperatures, inlet air pressure, droplet size, velocity, pressure and temperature of injected droplets, and combustion chamber geometry are among the influential factors in maximizing the benefits of Applicant's invention, and are incorporated as an express embodiment of this invention.
  • nozzle angle For example, by varying the nozzle angle, nozzle throat angle, nozzle jet spray centerline eccentricity, spray radius (sphere radius) in a pre-combustion (swirl chamber) , and by modifying injection timing, rate, duration, and the like, Applicant can maximize the beneficial attributes of his invention. It is noted, gasoline, diesel fuel, jet turbine, gas oil turbine, fuel oil burner applications are expressly contemplated.
  • Applicant contemplates a multiplicity of injection and atomization means. Differing fuels, fuel systems, combustion stems require differing injection, atomizing systems, pressures, temperatures, and the like. Obviously, gasoline systems are different than, for example, Grade No. 4-6 fuel oils, which in the practice of this invention, require devices to atomize higher viscosities, and to inject them into burner or combustion chambers at greater pressures.
  • the gasoline systems of Applicant invention contemplate injection manifold systems, whereas the diesel systems contemplate direct/indirect injection cylinder systems, etc. With Applicant's high latent heat of vaporization fuels, a vacuum effect can occur when introducing the charge into a cylinder.
  • Jet aviation fuels have similar, yet differing requirements and must, for example, consider fuel flow ranges of 50:1.
  • contemplated optimum gasoline fuel injection pressures are on the order of 1 to 5, 3 to 15, 5 to 20, 10 to 30, 15 to 45, 20 to 50, 25 to 70 psi.
  • Optimal diesel fuel injection pressures are on the order of 1500 to 30,000 psi.
  • Expected diesel injection pressures in the practice of this invention include 2000, 3000, 4000, 5000, 6000, 7000, 8000, 9000, 10,000, 11,000, 12,000 to 18,000, 13,000 to 20,000, 14,000 to 25,000, 15,000 to 30,000, 17,000 to 30,000, 18,000 to 30,000, 18,000 to 35,000, 17,000 to 40,000 psi.
  • Applicant's non-limiting atomization systems include: single fluid and multifluid and/or fluid/gas atomizer jets, twin-fluid atomization, internal- mixing atomizers, pressure atomizer, Y-jet atomizers, spinning disk systems, air sprays systems, spray atomizers, vaporizing systems, airblast atomizers, including plain- jet, prefilming, flat air blast atomizer , centrifugal injectors, rotary atomization, rotary wheel injection, ultrasonic, acoustic atomizers and other existing and/or future systems.
  • Air blast atomizers are desireable in the preferred practice of this invention. Applicant's invention anticipates substantial improvements in atomizer technology and incorporates said improvements herein.
  • the particle (drop size) of injected or vaporized fuels in the combustion chamber be 1 to 70 microns.
  • Preferable average particle sizes are 40 to 60 microns or less, more preferably from 30 to 50 microns, 20 to 40 microns, 5 to 30 microns, or less, including 1 micron or submicron.
  • Average particle sizes greater than 30, 40, 50, or 70 microns are acceptable if rapid diffusion of the vapor fraction occurs by other means, e.g. chemical means, and/or if smaller particle sizes hinder proper fuel distribution characteristic.
  • a miminum particle size of not greater than 5, 10, 20, 30, 40, 50, or 60 microns.
  • a liquid hydrocarbon co-fuel and a gaseous ECS fuel such as hydrogen
  • a gaseous ECS fuel such as hydrogen
  • a combustion chamber or combustor would be accomplished by separate injection, tailored to the specific characteristics of the fuel, and combustion system, designed to maximize combustion burning velocity.
  • dissimilar state fuel ingredients may be injected into a combustion system, simultaneously, by singular and/or separate means.
  • rate tailoring for fuel flow adjustments at altitude is especially preferred, as variations in combustion efficiency occur due to lower ambient pressures.
  • Improved pump line nozzle injection systems, unit injector systems, and/or other systems with high pressure capability, injection rate control, timing control, and/or other sensing controls are especially desirable.
  • Injection systems which can control injection pressure, timing, rate metering, and/or combustion pressures are expressly contemplated.
  • direct and indirect fuel injection systems are acceptable.
  • direct injection systems are more desireable, especially for diesel applications.
  • Direct fuel injection systems are also more desireable in view of maximizing the higher burning velocities of Applicant's ECS fuels.
  • a further embodiment, as noted above, is turbocharging and supercharging, which is highly preferred practice of this invention, especially in gasoline and diesel applications.
  • Advanced air breathing, air pressure apparatus, and/or turbocharge systems, increasing intake air pressures, operate in conjunction ERG systems, are particularly desireable, and substantially enhance the object of this invention.
  • combustion temperatures can be reduced by reductions in engine coolant temperatures, inlet air temperatures reductions, and/or intake manifold heat inputs. All such means are within the scope of this invention.
  • a method of reducing combustion temperatures and/or increasing burning velocity employing ECS based fuels includes use of at least one system selected from the group consisting advanced evaporators, combustor designs enhancing combustion turbulence, swirl or high swirl combustors or chambers, spherical combustors, divided chambers, enhanced engine design maximizing increased power combustion pressure (pressure densities) , engine design maximizing lower combustion temperatures, lean burn systems, catalytic combustors/combustion systems, pre-mixed combustor, diffusion flame combustors, lean premixed pre- evaporizing combustor, pre-evaporizing premixing combustor, variable compression ratio engines, indirect injection methods, direct injection methods, direct injection stratified charge engines, three-way catalytic systems, high swirl ratio to lean-air ratio systems (particularly during ignition to warm up) , varible-valve timing technology (e.g.
  • a combustion improving fuel containing a high latent heat of vaporization oxygenated based ECS compound and a combustion improving amount of a metallic, a combustion system, and an exhaust gas recirculation (ERG) system, wherein said fuel is combusted and exhaust gases are recirculated back into the combustion system; whereby combustion temperature are reduced by at least 10, 20, 30, 40, 50, 100, 150, 200, 250, 300°F, or more.
  • ESG exhaust gas recirculation
  • the combustors contemplated in the practice of this invention include geometric combustors (tubular, annular, tubo-annular, spherical) , aerodynamic combustors (diffusion flame, premixing, staged, catalytic, and application combustors (aircraft, industrial, vehicular) .
  • a diffusion flame combustor in combination with ECS fuels; whereby combustion emissions are improved, combustion is accelerated and/or there is a reduction of combustion temperatures.
  • Applicant's invention is particularly applicable in turbine applications, especially in aviation gas turbines, industrial gas turbines, marine gas turbines, and the like.
  • the physical state of fuels employed in this invention include a wide and narrow boiling range of liquid, semi- liquid, near-liquid, semi-solid, solid, and gaseous fuels, and mixture.
  • Applicant's neat fuel embodiment (e.g. ECS compound and metallic) has exceptional propulsion and environmental attributes, which are not limiting to internal combustion engines, aviation jet turbines, gas oil turbines, furnaces, burners, air breathing propulsion systems, or rocket engines.
  • Applicant's neat fuel is a stand alone fuel, which may be used potentially in any combustion system. Albeit, modification of existing combustors may be required to accommodate the combustion maximizing and thermal dynamic aspects of such neat applications. It is also an embodiment of this invention to incorporate advanced combustion systems, capable of better converting higher amounts of free energy under higher pressures and/or improved thermal efficiencies resulting from the usage of Applicant's fuels.
  • Applicant's invention it is also an express embodiment of Applicant's invention to employ an ECS compound, or mixture, solely by itself, with or without a combustion improving amount of non-lead metallic. However, it is a preferred embodiment to employ an ECS compound, or mixture, together with at least one non-leaded metallic ("ECS Fuel”) . It is also an embodiment that Applicant's ECS fuel may contain at least one additional oxidizer and/or at least one addition propellant or a co-fuel.
  • RVP reduction is an express embodiment.
  • finished fuels contemplated include those whose RVP ranges from 0.01 psi to 1000.0 psi, 2.0 psi to 200.0 psi, 2.0 psi to 40.0 psi, 1.0 psi to 20.0 psi, 1.0 to 10.0, 1.0 to 8.0 psi, 1.0 psi to 7.5 psi, 1.0 to 7.0 psi, 1.0 to 6.5 psi, 1.0 to 6.0 psi, 1.0 to 3.0 psi, 1.0 to 2.0 psi, or lower.
  • winter RVP's may range from 11.5 to 12.0 psi and summer RVP's ranging from 6.5 to 6.9 psi. It is also an express embodiment to optimize flash point in fuels that specify minimum flash point temperatures, e.g. aviation, turbine and marine applications, etc. It is also anticipated that co-solvent practice, tailoring of hydrocarbon fractions (so as to increase flash point) , salts, soaps, and other additives will be employed as required to reduce RVP and/or increase flash point. See Mitigation Practice below.
  • Olefin concentrations of approximately or less than 40, 37, 35, 33, 32, 31, 30, 29, 28, 27, 26, 25, 24, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1 volume percentage, or olefin free, are contemplated.
  • Preferred olefins are absent C4 to C5 olefins.
  • an olefin range of 2.0 to 12.0, 3.0 to 10.0, 4.0 to 8.0 volume percent, or less, are contemplated.
  • Olefin free compositions are also contemplated.
  • Example 19 The method of Example 19, wherein a co-fuel is employed selected from a CARB reformulated diesel fuel, a Swedish/European EPEFET environmental class 1 or 2 diesel fuel, an EPA reformulated diesel fuel, present and future.
  • a co-fuel selected from a CARB reformulated diesel fuel, a Swedish/European EPEFET environmental class 1 or 2 diesel fuel, an EPA reformulated diesel fuel, present and future.
  • Applicant's invention embodies a neat, essentially neat, majority neat ECS fuel, including compositions containing greater than 50% ECS compound(s) by volume. It also embodies a substantial majority, a minority, or substantial minority application, e.g. greater than 0.5%, 1.0%, 1.5%, 1.8%, 2.0%, 2.7%, 3.0%, 3.5%, 3.7%, 4.0%, 5%, 10%, 15%, 20%, 25%, 30%, 40% by volume, or weight) of an ECS fuel, normally with a co-fuel ("Base Fuel or Co-Fuel”) .
  • the most preferred neat ECS fuels containing Mn include dimethyl carbonate, methanol, hydrogen, methylal, methane hydrate, hydrazine, and mixtures thereof.
  • ECS fuels will likely be incorporated in minority volumes into co- fuels concurrently in the market. However, with greater concentrations of ECS fuels as a volume percent of the finished fuel, combustion and emission properties increase dramatically.
  • Co-fuels of Applicant's invention normally will be fuels that are as environmentally attractive as possible, meeting regulatory standards, including California Air Resources Board standards, EPA standards, prsent and future.
  • co-fuels will generally low in sulfur or be absent sulfur, low or absent carcinogenic polynuclear aromatics, low or absent lead, phosporus, benzene, toxics, and/or other known or to be discovered carcinogens.
  • Co-fuels will be formulated (e.g. reformulated) to increase combustion burning velocities and reduce combustion temperature to the maximum extent possible. They will be additionally formulated to acheive maximum environmental advantage. Again practices of one class of fuels (e.g. reformulated gasolines) may be applied in any other class of fuels (e.g. diesel, gas/oil turbine fuels, etc.) to advance the objects of this invention.
  • reformulated gasolines e.g. reformulated gasolines
  • any other class of fuels e.g. diesel, gas/oil turbine fuels, etc.
  • This invention expressly contemplates jet aviation turbine fuel application and co-fuel application. Applicant anticipates wide application in a wide range of jet fuels, aviation turbine engine fuels, including fuels for propulsion and lift engines, starters and auxiliary units.
  • the practice of this invention expressly embodies aviation turbine, resultant aviation turbine fuels (ECS fuel and co-fuel) or aviation turbine co-fuels, which meet ASTM D 1655 standards, including Jet A, Jet A-l (a relatively high flash point distillate of the kerosine type) i and Jet B— A ( a relatively wide boiling range volatile distillate) .
  • Other jet turbine grades are contemplated, including those meeting IATA guidance manual specifications and military aviation turbine specifications, such as MIL-T-5624, MIL-T-83133, and MIL-P- 87107.
  • Applicant incorporates by reference the numerous specifications of aviation and gas turbine fuel's including ASTM 1655 Specifications and Chapter 2, "Gas Turbine Fuels," L. Gardner and R.B.
  • the aviation turbine fuels of this invention consist of blends of refined hydrocarbons derived from crude petroleum, natural gasoline, or blends thereof with synthetic hydrocarbons. They are generally a mixture of hydrocarbons (i.e. paraffins, cycloparafins, aromatics, and olefins, plus trace levels of heroatoms such as sulfur compounds) and blended from straight run distillate fractions, which have been subjected to some form of additional processing.
  • hydrocarbons i.e. paraffins, cycloparafins, aromatics, and olefins, plus trace levels of heroatoms such as sulfur compounds
  • Applicant's invention expressly contemplates gas turbines and air-breathing propulsion systems.
  • Such non- limiting systems include turbojet, turboprop, ducted fan, ram jet, scram jets, ducted jet, pulse jet systems, and their many variations. These systems are contemplated in the instant practice of aviation turbine fuels.
  • non-limiting gas turbine configurations include basic, one intercooling, two intercooling. isothermal intercooling, one reheating, two reheating, isothermal reheating, one intercooling and one reheating, two intercooling and two reheating, isothermal intercooling and isothermal reheating, regeneration, regeneration with basic gas turbine, regeneration with one intercooling, regeneration with one reheating, regeneration with one intercooling and one interheating, regeneration with two intercooling and two reheating, and regeneration with isothermal intercooling and isothermal reheating.
  • Non-limiting examples of "turbo jet” air breathing propulsion systems include: basic, intercooling, reheating, intercooling and reheating, after-burning, intercooling and reheating.
  • Turbo prop Non-limiting examples of "turbo prop” systems include; basic, intercooling, reheating, intercooling and reheating, regeneration, intercooling and reheating with regeneration, basic ducted fan, intercooling and reheating ducted fan, ducted fan with afterburing, basic ram jet, scream jet, liquid metal cycle nuclear turbo-jet, liquid metal cycle nuclear turbo-prop, ducted rocket and the like. Applicant has found that ram jet and pulse jet operation represent a particularly preferred embodiment of this invention. Thus, Applicant incorporates by reference the thermal dynamics of the pulse jet. See, “Jet, Rocket, Nuclear, Ion and Electric Propulsion: Theory and Design,” Edited and Authored by W.H.T. LOH, 1968, p 191.
  • the desired combustion chambers of Applicant's turbine combustors include tubular, tubo-annular, annular type, and spherical.
  • Applicant's invention has particular application with the above turbine combustion configurations and systems in that it unexpectedly and significantly reduces the formation of free carbon in the primary combustion zone. It has also been found that the reduction of free carbon in the primary combustion zone, in turn reduces flame radiation, which in turn reduces combustion liner temperatures. Thus, reducing liner heat loads and increases engine life.
  • Applicant's reduced combustion temperatures are extremely useful for high altitude and high mach applications where extreme engine temperatures limit the operation and design of the combustion system. It has been found that Applicant can reduce engine combustion temperatures significantly, on the order of 25°F to 400°F, or more.
  • a method of operating high altitude, high mach or other jet engine exposed to high operating temperature comprising: Mixing an ECS fuel (containing an ECS compound and appropriate metallic) in such proportions with an aviation co-fuel that combustion at high mach, exceeding 1.0, 1.5, 2.0, 2.25, 2.5, 2.75, 3.0, 3.25, 3.5, 3.75, 4.0, 4.25, 4.5, 4.75, 5.0, 5.25, 5.5, 5.75, 6.0, 6.25, 6.5 or higher mach, and/or at high or extreme altitude of 30,000, 40,000, 50,000, 60,000, 70,000, 80,000, 90,000, 100,000, 110,000, 120,000, 130,000, 150,000, 170,000, 200,000, 250,000, 300,000, 350,000 feet above sea level or higher altitudes, is at reduced temperature; operating jet engine at said high mach and/or at high or extreme altitude; wherein engine and combustion temperature is reduced 25°f to 300°F, 50°f to 350°F, 75°f to 375°F, 100°f to
  • Applicant's invention increases useful work, thrust, engine thermal efficiency from 0.5% to 2.0%, 0.5% to 5.0%, 1.0% to 10.0%, 5.0% to 20%, 10% to 40%, 25% to 50%, 35% to 75%, or more, and depending upon character and concentration of the ESC fuel, composition of the co-fuel, and the specific engine operation.
  • Applicant's invention in the application of jet turbines, also has particular advantage in reducing hazardous exhaust concentrations of CO, NOx and HC emission's, which are typically associated with idle condition.
  • a preferred chemical means employing an ECS compound comprises a combustion improving amount of dimethyl carbonate in combination with a combustion improving amount of a cyclomatic manganese tricarbonyl compound in a base aviation jet turbine fuel. It is preferred that the final combination fuel be constructed to meet minimal ASTM specifications, including flash point, pour point, thermal stability, distillation, aromatic, density, freezing point, viscosity, net heat of combustion, and the like.
  • the hydrocarbon portion of the turbine fuel composition comprises paraffins, naphethenes, olefins, and aromatics in order of their preference.
  • oxygen derived from ECS compounds fuels will be incorporated into aviation turbine fuels in varying concentrations, with optimal amounts dependent upon average flight altitudes, speed, lift/thrust requirements, combustion system configurations, combustion efficiencies, base fuel hydrocarbon composition, manganese concentrations, and the like.
  • the recommended 0 2 weight percentage concentration of the resultant fuel at sea level to 10,000 feet is from 0.1% to 5.0%, with 3.0% to 5.0% preferred; at 20,000 feet, the recommended 0 2 weight percentage 0.1% to 10.0%, with 3.0% to 8.0% being preferred; at 30,000 feet the recommended 0 2 weight percentage concentration is from 0.1% to 16.0%, with 5.0% to 7.0% recommended and 5% to 16.0% preferred; at 40,000 feet the recommended 0 2 weight percentage concentration is from 0.1% to 30.0%, with 11.0% to 30.0% preferred.
  • Recommended average 0 2 weight percentage concentration of the resultant fuel may greatly exceed the upper limit of 30.0% or more, particularly in advanced fuel applications, high or extreme high altitudes, with fuel mixes containing alternative oxidants.
  • Manganese concentrations will range from 0.001 grams to 10.0 grams per gallon for aviation jet turbine fuel. However, concentrations substantially above this range is anticipated in advanced minority, majority, and/or neat ECS fuel applications. Hypergolic applications also dictate higher concentrations of Mn.
  • Mn concentration of manganese
  • Oxygen concentrations of Oxygen
  • acceptable Mn concentrations can range from about 0.001 to 4.00 grams/gal.
  • desireable Mn concentrations range from about 0.001 to 0.50 grams per gallon (those ranging from about 0.125 to 0.50 grams Mn/g being more desireable) .
  • concentrations outside these ranges are expressly contemplated, especially in more advance operations.
  • Example 48 An aviation jet turbine fuel meeting ASTM 1655 specifications, diisopropyl ether or dimethyl carbonate, and mixture, representing 0.5% to 4.5%, 1.0% to 2.0% oxygen weight percent of the composition, and 1/64 to 1/8 g/gal Mn of a cyclopentadienyl manganese tricarbonyl compound.
  • An aviation jet turbine fuel comprising 0.01% to 40.0% by weight oxygen from DMC (more preferably 0.5% to 5.0%, 0.5% to 10.0%) and at least one manganese metallic representing 0.001 to 20.0 gr/gal (more preferably 0.01 to 7.5, 10.0 gr/gal, more preferably 0.1 to 3.0 gr/gal); said fuel having a total aromatic volume concentration not exceeding 25% (22% or less more preferred) , a maximum sulfur content not exceeding 0.3 weight percent (preferably 0.2, 0.1, 0.02, or lower, or sulfur free), a maximum T-10 temperature of 205°C, a maximum final boiling point temperature of 300°C (more preferably less than 290°C, 285°C, 280°C, 275°C, 270°C, 265°C) , a minimum flash point of 38°C, a density of 775 to 840 at 15°C, kg/m 3 , a minimum freezing point of -40°C, a minimum net heat of combustion of 35.0, 36.0, 37.0, 38.0,
  • Example 52 A method employing the fuel of Example 49 above, wherein combustion occurs at an altitude in excess of 10,000 feet above sea level, whereby thermal, combustion efficiency or lift is improved compared to co-fuel alone.
  • Example 52 A method employing the fuel of Example 49 above, wherein combustion occurs at an altitude in excess of 10,000 feet above sea level, whereby thermal, combustion efficiency or lift is improved compared to co-fuel alone.
  • An aviation jet turbine fuel meeting ASTM 1655 specifications comprising, dimethyl carbonate, a flash point increasing co-solvent, jointly representing 0.5% to 40.0% oxygen weight percent of the composition, and 0.001 to 5.0 g/gal Mn of a cyclopentadienyl manganese tricarbonyl compound.
  • Example 54 Same as examples 49, except that fuel is combusted in an aviation jet engine operating at 5,000 feet altitude above sea level.
  • Example 55 Same as example 49, except the composition is combusted in an aviation jet engine which is operating at 10,000, 20,000 feet altitude above sea level with thermal or combustion efficiency improving at least 1%, 2%, 3%, 4% or more.
  • dimethyl carbonate is in the composition at 25% oxygen weight percent and the cyclopentadienyl manganese tricarbonyl compound has a Mn weight in excess of 1.0 gr/gal.
  • Example 57 Same as example 49, except the composition is combusted in an aviation jet engine which is operating at 40,000 feet altitude above sea level.
  • Example 58 The examples of 49, wherein the dimethyl carbonate is in the composition at an oxygen weight of about 0.1 to about 3.0 percent.
  • Example 58a The examples of 56, 58, wherein the composition contains a flash point increasing amount of tetraethylene glycol, triethylene glycol, co-solvent or salt.
  • Example 59 The examples of 49, wherein said operation is at altitudes in excess of 60,000 feet above sea level, wherein 02 wt of DMC is 3.0% to 15.0% and metallic is a concentration of 0.5 to 10.0 grams/gal; whereby engine temperatures are by 10°F to 400°F, or more, over known aviation methods.
  • Example 60 The examples of 49, wherein said operation is at altitudes in excess of 60,000 feet above sea level, wherein 02 wt of DMC is 3.0% to 15.0% and metallic is a concentration of 0.5 to 10.0 grams/gal; whereby engine temperatures are by 10°F to 400°F, or more, over known aviation methods.
  • Example 60 The examples of 49, wherein said operation is at altitudes in excess of 60,000 feet above sea level, wherein 02 wt of DMC is 3.0% to 15.0% and metallic is a concentration of 0.5 to 10.0 grams/gal; whereby engine temperatures are by 10°F to 400°F, or more, over known aviation methods.
  • Example 60 The examples of 49, wherein said
  • a method of operating a high altitude jet engine comprising: mixing an aviation jet fuel with an ECS component representing 0.01 to 30.0% oxygen by weight of the composition together with a combustion improving amount of a high energy releasing metallic; operating said engine at altitude in excess of 40,000 feet, preferably 60,000 to 100,000 feet or more; exhausting combustor gases into inlet of a turbine; whereby gas inlet temperature is reduced below 1200°K., 1150°K., 1100°K. , 1050°K. , 1000°K. , 950°K. , or at least by 0.5% to 25.0% over best known method for temperature reduction; and/or turbine inlet pressure is increased over existing methods by 0.5% to 40.0%; and/or thermal efficiency is improved by at least 0.5% to 20%, or more, over existing methods.
  • Example 62 In combination, an aviation jet turbine engine and a jet turbine fuel meeting ASTM 1655 specifications containing an oxygenated ECS compound, wherein resultant fuel composition contains 0.5 to 5.0% oxygen weight percent, and at least one cyclopentadienyl manganese tricarbonyl compound at 1/8 gr Mn/gal, whereby the formation of free carbon in the primary combustion zone is reduced and inlet temperatures are substantially reduced.
  • example 62 wherein combustion temperatures are reduced, or liner heat loads are reduced and/or turbine engine life is extended.
  • Applicant's advanced ECS based fuel in combination with advance combustors having shorter combustor length to casing diameter ratios than convention combustors; reduced specific fuel consumptions with smaller diameter casting; smaller casing diameters with lower pressure losses, at higher combustion pressures; higher combustion pressure combustors absent increased turbine inlet or liner temperatures; reduced flame tubes sizes that do not sacrifice combustion efficiency, lift, or fuel economy; low pressure lift combustors of reduced flame tubes sizes that do not sacrifice combustion efficiency, lift, or fuel economy; larger diameter combustor casings that enjoy improved lift; larger diameter combustor casings with shorter flame tubes enjoying improved combustion efficiencies; reduced casing diameters absent increasing pressure losses; combustors having reduced pressure losses; lower compression ratio engines; lower compression ratio lift engines; higher compression ratio engines, absent adverse flame tube wall temperature increases (hence reducing film air cooling requirements) ; combus
  • an ECS based aviation jet turbine fuel and a jet engine the combination characterized by: the combustion of said fuel in a low pressure lift engine, wherein said engine's flame tube length has been decreased by at least 10%, absent impairing lift or combustion efficiency.
  • an ECS based aviation jet turbine fuel and a jet engine the combination characterized by: the combustion of said fuel in a high compression engine, wherein said engine's turbine flame tube wall temperatures are reduced and thermal efficiency is increased by at least 5%.
  • Contemplated combustion efficiencies are greater than 2% at altitudes in excess of 20,000 feet.
  • a method of reducing specific fuel consumption comprising combusting an ECS fuel and/or an ECS plus co- fuel combination in an annular, tubular or tubo-annular combustor whose dilution zone length is about 1.5 times the flame tube width; whereby specific fuel consumption is reduced.
  • Example 67 The method of example of 66, wherein annular combustor length to casing diameter is reduced with lift and/or fuel efficiency improved.
  • Example 68 The examples of 66, 67, wherein the ECS fuel comprises an majority ASTM aviation jet fuel and a minority comprised of dimethyl carbonate together with a combustion improving amount of at least one non-leaded metallic.
  • LHV of fuel after adjustment is equal to or above 30, 35, 38, 40, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 54, 55, 56, 57, 58, 59. 60, 61, 62, 63, 64, 65, 66, 68, 70, 72, 74, 76, 78, 80 cal/gram.
  • Preferred LHV'S exceed 67, 68, 69, 70 (125 BTU/lb), 71, 72, 73, 74 cal/gr.
  • Applicant's resultant reformulated jet turbine fuel's latent heat of vaporization be higher than those provided by typical ASTM standards. It is an express embodiment to modify Jet A or Jet A-l fuels to have acheive minimum ASTM freeze and Flash points, if required due to presence of ECS fuel.
  • Jet A and Jet A-l fuels are Jet A and Jet A-l fuels. But, non-the-less may be applied in warranted circumstances.
  • Illustrative example of Applicant's ECS turbine aviation jet fuel combination is as follows:
  • ECS Fuel/Compound (02 wt%, dimethyl carbonate) 0.5-20.0% 0.5-5.0%
  • the freezing point shall be at least 6°C below the minimum engine fuel inlet temperature.
  • Fuels will be acceptable provided they meet one of the following alternative requirements or combination of requirements: a. Smoke point of not less than 25 mm when determined per ASTM Method D1322. b. Smoke point of not less than 20 mm when determined per ASTM Method D1322 provided fuel does not contain more than 3.0 percent by volume of napthalene as determined per ASTM D1840. c. Due to occasional difficulties meeting the requirement of item b., minimum smoke point may be relaxed down to 18 mm, as necessary, when determined per ASTM method D1322, provided fuel does not contain more than 3.0 percent napthalene as determined per ASTM D1840.
  • Jet A-l fuels for purposes of modifying temperatures are limited, because T-10 and end-boiling temperatures for said fuels vary only about 100°C. While adverse conditions generally associated with aromatic usage, e.g. free carbon formation, are largely controlled by the practice of this invention, such aromatics, otherwise tend to aggravate flame radiation, smoke, and erode elastomers.
  • GAS TURBINE FUEL OILS AND SYSTEMS Applicant's invention expressly contemplates gas turbine fuel oils and co-fuel application of gas turbine fuel oils, and the like, including those meeting suitable requirements of industry, gas oil turbine manufactures, ASTM D 2880 standards, and the like.
  • ASTM fuel specifications D 2880-92, D 396 and D 975 (including future editions) relevant prior specifications, related ASTM standards, test methods, military, and international standards are incorporated by reference.
  • a principal object of this invention employing Applicant's solution is the improvement of gas oil turbine thermal efficiency, reduction of harmful deposits, pollution, and control of corrosion on turbine blading.
  • an enhanced combustion vapor is combusted in a gas oil turbine combustor; and is derived from DMC representing 0.01% to 40.0% oxygen by wt in the fuel, at least one metallic in a concentration of 0.001 to about 7.5 gr/gal, and a gas oil turbine co-fuel selected from No. 0-GT, No. 1-GT, No. 2-GT, No. 3-GT or No.
  • 4-GT gas turbine fuel oils wherein combined fuel is characterized as having a flash point of 38°C to 66°C, a minimum kinetic viscosity at 40°C ranging from 1.3 to 5.5 2mm/s (ASTM D 445), optionally a sulfur content not exceeding 2500, 2000, 1500, 500, 400, 300, 200, 100, 50, 40, 20 ppm wt (or being sulfur free) , optionally a T90 temperature reduced at least 20°C compared to unadjusted fuel, a bunsen laminar burning velocity of at least 32, 33, 34, 35, 36, 38, 40, 42, 43, 44 cm/sec, a latent heat of vaporization of at least 80, 85, 90, 95, 100, 105, 110, 115 BTU/lb; whereby turbine inlet gas temperature is less than 650°C, 625°C, 600°C or 550°C, and/or whereby inlet pressure is increased as compared to co-fuel alone (preferably by at least 2.0%
  • Example 77 The method of Example 77, wherein said combustor's flame tube has a dilution zone length of approximately 1.4 to 1.6 times the total flame tube width.
  • a gas turbine fuel oil composition comprising a 0.01 to 30.0% oxygen by weight DMC and combustion improving amount of a manganese tricarbonyl or other non-leaded fuel soluble metallic compound, and a majority portion of a gas oil turbine fuel, whereby resultant composition meets applicable ASTM D 2880, D 396, and D 975 standards, present and future.
  • cyclomatic manganese compound is present in the composition in an amount from about 0.0625 to 3.00 gram Mn/gal, with 0.25 to 1.50 g Mn/gal preferred, with 0.125 to 0.375 g Mn/gal also preferred; and wherein the oxygen content of the resultant fuel does not exceed 4.5% oxygen weight percent.
  • composition of example 62 wherein said composition's end boiling point, T 90, and T-50 temperatures are reduced at least 10°F or 50°F and latent heat of vaporization is increased, whereby combustion temperatures are reduced.
  • different gas turbine fuels prepared to different specifications and sold under different names are acceptable. However, those that meet the requirements of fuels specified under ASTM Specification D 2880, are preferred.
  • Desireable gas turbine co-fuels of this invention are homogeneous mixtures of hydrocarbon oils, free of inorganic acid, and free of excessive amounts of solid or fibrous foreign matter, which would otherwise make frequent cleaning of suitable strainers necessary. It is preferred that all grades of turbine fuel oil remain homogeneous in normal storage and not separate by gravity into light and heavy oil components outside the viscosity limits for the grade. Applicant's turbine fuel oils should be primarily hydrocarbons, but may include bio material and/or coal derivatives. It is also preferred that Applicant's co-fuel turbine fuel oils be free of contaminants. In the present context, contaminants are considered to be foreign materials that make the fuel less suitable or even unsuitable for the intended use. For preferred preparation of turbine co-fuels, see International Application No. PCT/US95/02691.
  • diesel co-fuels and resultant fuels include, synthetic diesel, bio diesel (bio esters, soybean, e.g. C18 + fatty acid methyl esters, rap seed, see IFP EsterFip process), etc., fuels meeting ASTM D 975 standards (incorporated by reference) , industry, international specifications, including CARB, EPA, European EPEFP specifications, certification standards and/or regulations, present and future. See TABLE 3.
  • D No. O-GT includes naphtha. Jet B fuel and other volatile hydrocarbon liquids.
  • No. 1-GT corresponds in general to specification D 396 Grade No. 1 fuel and D 975 Grade 1-D diesel fuel in physical properties.
  • No. 2-GT corresponds in general to specification D 396 No. 2 fuel and D 975 Grade 2-D diesel fuel in physical properties.
  • a bio diesel fuel composition comprising: 1.0% to 50% by volume biodiesel (bio-esters, C18 + fatty acid methyl esters, rape seed esters, and the like), 1.0% to 95% by volume diesel fuel oil (conventional or reformulated) , optionally 0.5% to 90% alkylate, 1.0% to 90.0% by volume at least one ECS compound, and optionally a combustion improving amount of a metallic; under the proviso that total volume of biodiesel, diesel fuel oil, alkylate, and ECS compound be equal to 100% of the composition's volume (less metallic concentration, if any) .
  • Applicant's diesel fuels include Swedish Enviromental class 1 and 2 fuels, CARB reformulated fuels, and EPA reformulated fuels, existing and future.
  • Non-limiting examples of diesel fuel engines contemplated in Applicant's invention include: indirect injection, improved indirect injection and advanced ignition assisted diesel engine systems, direct injection, turbo-charge direct injection, existing and future advance swirl chamber engines, existing and future.
  • Applicant's invention also contemplates exhaust gas treatment via catalyst, trap, and/or other system.
  • Applicant's fuels include future reformulated diesel fuels of the calibre to be defined either by industry or government.
  • a preferred embodiment are low/no sulfur, low/no aromatic hydrotreated diesel fuels, absent normally associated lubricity problems facing similar or low sulphur fuels.
  • a fuel composition comprising at least one ECS compound and a combustion improving amount of at least one metallic; a low/no sulfur and/or low/no aromatic reformulated diesel composition; and a lubricity additive; wherein the gum concentration is approximately 5.0, 4.5, 4.0, 3.5, 3.0, 2.5, 2.0, 1.5, 1.0, 0.5 mg/100ml.
  • Example 84 The fuel composition of Example 83, additionally comprises combustion chamber, induction valve, or injector deposit control additive, or additive package.
  • Example 85 The fuel composition of Example 83, wherein the diesel fuel has a sulfur content of 0.05 wt% or less, a color standard of less than 2, 1 under ASTM 1500, an aromatic concentration of 25%, 20%, 15%, 10%, or less, a gum concentration of 1.5 to 2.0, or less, mg/lOOml.
  • test methods indicated are the approved referee methods. Other acceptable methods are indicated in 4.1. c Grades No. 1-D, No. 2-D and No. 4-D are required to contain a sufficient amount of 1,4-dialkyl amino anthraquinone (blue dye) so its presence is visual apparent.
  • the minimum flash point shall be 38°C
  • the minimum viscosity at 40° shall be 1.7 mm /s
  • the minimum 90 recovered temperature shall be waived.
  • Test Method D 4737 can be used as an approximation.
  • Applicant's preferred diesel co-fuels contemplate low sulfur concentrations including those equal to or below
  • concentrations are 50 ppm or below.
  • Applicant's diesel co-fuels include those with low aromatic contents including those equal to or less than 60%, 50%, 47%, 45%, 40%, 35%, 30%, 28%, 25%, 22%, 20%, 18%, 15%, 12%, 10%, 7%. 6%, 5%, 4%, 3%, 2% by vol., or an aromatic free composition. Applicant prefers that 2 and 3 ring plus aromatics be excluded to the extend feasible. Preferred fuels should be nitrogen free.
  • Applicant's diesel fuel cetane number include those equal to greater than 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90 or higher. Those in excess of 45, and 55 are preferred.
  • Applicant recognizes that an upper limit exists, if cetane is achevied solely via cetane additive enhancer(s) .
  • the desired fuel subsitutents would include n-parafins, cyclohexane and benzene, in order of their prefernce.
  • benzene concentrations should be strictly limited to less than 15,
  • benzene free compositions are desireable
  • Benzene concentrations of less than 5.0, 3.0, 2.5, 1.0, 0.5, 0.0 volume percent are preferred.
  • Polynuclear aromatics should be reduced to maximum extent possible and not exceed 7.0, 6.0, 5.0, 4.0, 3.0, 2.5, 2.0, 1.6, 1.5, 1.4, 1.3, 1.2, 1.1, 1.0, 0.9, 0.8, 0.7, 0.6, 0.5, 0.4, 0.2, 0.02, 0.01, 0.001 weight percent. PNA's less than 0.3 wt percent and/or compositions essentially free of polynuclear aromatics are most preferred.
  • API should equal to or exceed 30, 31, 32, 33, 34, 35,
  • Densities should range from 800-820 kg/m 3 . Densities outside this range are also desireable, including 780, 785,
  • Substituent diesel fuel formulation which operates to increase burning velocity and/or reduce combustion temperature is expressly contemplated, especially those that operate to increase burning velocities 0.5%, 1.0%, 1.5%, 2.0%, 2.5%, 3.0%, 3.5%, 4.0%, 4.5%, 5%, 8.0%, 10%, 15%, 20%, or more, over the clear or unadjusted fuel.
  • Formulation that increases laminar bunsen flame speed to 39, 40, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, or greater, cm/sec is desired.
  • Similar formulation which operates to reduce combustion temperature is contemplated, e.g. formulation that increases latent heat of vaporization equal to or -123- above 30, 35, 38, 40, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 54, 55, 56, 57, 58, 59. 60, 61, 62, 63, 64, 65, 66, 68, 70, 72, 74, 76, 78, 80 cal/gram, or greater, is desireable.
  • Applicant's diesel and diesel based compositions be constructed whereby latent heat of vaporization ("LHV") exceeds at least 40, 43, 45, 46, 50, 54 (100 BTU/lb), 56 cal/gram for heavy diesel, and 50, 53, 56, 59, 62, 64 (115 BTU/lb), 66, 68 cal/gram for light diesels.
  • LHV latent heat of vaporization
  • Applicant's resultant reformulated fuel's latent heat of vaporization be higher than conventional or reformulated base diesel fuels, including low aromatic, low or now sulfur fuels, etc.
  • an acceptable minimum IBp temperature of a reformulated diesel fuel includes 356°F and a 95% distillation temperature of 545°F to 563°F max.
  • Example 86 A method wherein said an enhanced combustion vapor is combusted in a diesel engine; and is derived from DMC representing 0.01% to 10.0% oxygen by wt in the fuel, at least one metallic in a concentration of 0.001 to about 2.5 gr/gal, a diesel co-fuel base; wherein combined fuel is characterized as optionally having sulfur content not greater than 250 ppm, 200 ppm, 150 ppm, 100 ppm, 75 ppm, 50 ppm, 40 ppm, 30 ppm, 20 ppm, 10 ppm, 5 ppm, or being sulfur free; density ranging from about 880 to 800 kg/m 3 ; viscosity -124- ranging from 2.5 to 1.0 cSt at 40°C; cetane index of 40 to 70; an aromatic content by vol.
  • a T10 fraction temperature of about 190 to 230°C, a T50 fraction temperature of about 220 to 280°C, and a T90 fraction of about 260 to 340°C, and cloud point temperature of °C -10, -28, or -32 (or 6°C above tenth percentile minimum ambient temperature) ; a bunsen laminar burning velocity Of at least 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46 cm/sec, a latent heat of vaporization of at least 85, 90, 95, 90, 100, 105, 110, 115, 120 BTU/lb.
  • Example 87 A method where an enhanced combustion vapor is combusted in a diesel engine; and is derived from DMC representing 0.01% to 10.0% oxygen by wt in the fuel, at least one metallic in a concentration of 0.001 to about 2.5 gr/gal, a diesel co-fuel base; wherein combined fuel is characterized as having an API range of about 41.1 to 45.4, optionally a sulfur content not exceeding 300, 250, 200, 150, 100, 50, 40, 20, 10, 5 wt ppm or sulfur free, absent nitrogen, and an aromatic content ranging from 0 to 5%, 1 to 10%, 0 to 15%, 0 to 20%, 0 to 35% by volume, PNA vol% of 0.03, 0.02, or less, a Cetane index greater than 45, an IBP of approximately 365°F, a 95% fraction ranging from 460°F to 540°F; a bunsen laminar burning velocity of at least 38 cm/sec, a latent heat of vaporization of at least 105 -125- B
  • Low emission diesel fuels comprising; a maximum sulfur concentration of no greater than 1100 ppm, 800 ppm, 440 ppm, 300 ppm, 250 ppm, 200 ppm, 150 ppm, 100 ppm, 50 ppm, 10 ppm, 5 ppm, or less (including sulfur free) ; density kg/m 3 of 800, 805, 810, 814, 815, 839, 840, or higher; viscosity of cSt at 40°C 1.8, 2.4, 2.5, or lower; cetane index of 46.2, 51.2, 52.1, 53.5, 57.5, 57.8, or higher; aromatics by vol.% 27.1, 2.45, 14.5, 1.1, 21.6, or lower, (including 3-ring + aromatics of 0.16, 0.02, or less); a distillation fraction where, °C IBP ranges from 188.5, 213, 153, 215, 195, less than 180, and at T10 fraction temperatures range from 221, 215.5, 198, 227,
  • a reformulated diesel fuel comprising a diesel composition, wherein API ranges 41.1 to 45.4, sulfur does not exceed 10 wt ppm (preferably sulfur free) , absent nitrogen, aromatics at 20, 15, 10, 5.0% vol or less, PNA vol% 0.02 or less (preferably PNA free), Cetane index 45, 47, 50, 55, an IBP of 365°F, a 95% fraction @ 545°F, 525°F, 500°F, 475°F, or more; a combustion improving anount of a manganese or other metallic compound.
  • API ranges 41.1 to 45.4, sulfur does not exceed 10 wt ppm (preferably sulfur free) , absent nitrogen, aromatics at 20, 15, 10, 5.0% vol or less, PNA vol% 0.02 or less (preferably PNA free), Cetane index 45, 47, 50, 55, an IBP of 365°F, a 95% fraction @ 545°F, 525°F, 500°F, 475°F, or more; a combustion improving anount
  • a liquid fuel comprising DMC at 0.01% to 5.0% by weight % oxygen (more preferably 0.5% to 2.5%) and at least one manganese metallic representing 0.001 to 2.8 gr/gal
  • a diesel co-fuel base (preferably 0.065 to 1.0 gr/gal, most preferably 0.1 to 0.5 gr/gal) , and a diesel co-fuel base; wherein combined fuel is characterized as having sulfur content not greater than 250 ppm, 100 ppm, 50 ppm, 5 ppm, or being sulfur free; density ranging from 880 to 800 kg/m 3 ; viscosity ranging from 2.5 to 1.0 cSt at 40°C; cetane index of 40 to 60; an aromatic content by vol.
  • a T10 fraction temperature of about 190 to 230°C, a T50 fraction temperature of about 220 to 280°C, and a T90 -127- fraction of about 260 to 340°C, and cloud point temperature of °C -10, -28, or -32; a bunsen laminar burning velocity of at least 34 cm/sec, a latent heat of vaporization of at least 95 BTU/lb.
  • a liquid fuel comprising DMC at 0.01% to 5.0% by weight % oxygen (more preferably 0.5% to 2.5%) and at least one manganese metallic representing 0.001 to 2.8 gr/gal (preferably 0.065 to 1.0 gr/gal, most preferably 0.1 to 0.5 gr/gal) , and a diesel co-fuel base; wherein combined fuel is characterized as having an API range of about 41.1 to 45.4, a sulfur content not exceeding 10 wt ppm (preferably sulfur free) , absent nitrogen, and an aromatic content of 0 to 20% by volume, PNA vol% of 0.02, or less, a Cetane index greater than 45, an IBP of 365°F, a 95% fraction ranging from 460°F to 540°F; a bunsen laminar burning velocity of at least 36 cm/sec, a latent heat of vaporization of at least 100 BTU/lb.
  • the example of 91 additionally comprising a burning velocity increasing and/or temperature reducing ECS compound in concentration of 0.5 to 1.0, 0.5 to 1.2, 0.5 to 1.3, 0.5 to 1.5, 0.5 to 1.8, 0.5 to 2.0, 0.5 to 2.2, 0.5 to 3.0, 0.5 to 3.5, 0.5 to 4.0, 1.0 to 3.0, 1.0 to 5.0, 1.0 to 7.0, 2.0 to 8.0 volume percent oxygen in the composition.
  • 91, 92 additionally comprising a combustion chamber deposit control/reducing additive, and optionally an injector or intake valve deposit control additive.
  • Mn or metallic operating ranges in the resultant diesel composition may range from 0.001 to about 10.00 gr Mn/gal, 0.001 to 7.0, .001 to 5.0, .001 to 4.0, 0.001 to 3.5, 0.1 to 2.6, 0.1, 2.2, 0.1 to 2.0, 0.1 to 1.9, 0.1 to 1.6, 0.1 to 1.4, 0.1 to 1.2, 0.1 to 1.0, 0.1 to 0.9, 0.1 to 0.7, 0.1 to 0.5, 0.001 to 0.375, 0.1 to 0.25, 0.1 to 0.18, 0.001 to 0.125, 0.1 to 0.0625 Mn/gal, or equivalent, if an alternative metallic compound is employed (including combination) .
  • Mn levels are less than 5 gr./gal, with those less than 3.0 or even 2.5 gr. Mn/gal being acceptable.
  • concentrations greater than 10, 12, 15, 20, 22, 25, 26, 27, 28, 29, 30, 31, 32, 35, 40, 50 grs Mn/gal are also contemplated, particularly in advance applications.
  • a desireable concentrations include 0.03125, 0.0625, 0.09375, 0.125, 0.15625, 0.21875, 0.25, 0.28125, 0.3125, 0.34375, 0.375, 0.5, 1.0, 1.5, 2.0, 2.2, 2.3, 2.5, 2.7 gr Mn/gal, including concentrations within these ranges.
  • Desireable -129- ranges includes from about 0.001 to about 3.00, 0.001 to 2.9, 0.001 to 2.8, 0.001 to 2.7, 0.001 to 2.6, 0.001 to 2.5 gram Mn/gal. Ranges outside these are acceptable.
  • manganese concentrations include those equal to or greater than 0.015625, 0.03125, 0.0625 0.125, 0.25, 0.275, 0.375, 0.50, 0.625, 0.75, 0.875, 1.0, 1.125, 1.25, 1.375, 1.5, 1.625, 1.874, 2.0, 2.125, 2.25, 2.375, 2.5, 2.625, 2.75, 2.875 gram Mn/gal.
  • a desireable range includes from about 0.001 to about 1.50 gram Mn/gal.
  • Other desireable ranges include from about 0.001 to about 0.50 gram Mn/gal of composition.
  • Lower concentration ranges from .001 to about 0.25 grams/gal are also contemplated. Ranges greater than 0.0625 gr Mn/gal are also contemplated.
  • manganese concentrations must exceed 1/64, 1/32, 1/16, 3/32, 1/8, 5/32, 7/32, 1/4 gr Mn/gal prior to noticible improvement in fuel economy or power.
  • oxygen concentrations ranging from 0.01 to 0.5% weight are acceptable. Oxygen concentrations from 0.01 to 1.5% weight percent is desireable. 02 concentrations from about 0.5 to 5.0%, and those greater than 1.5% slightly more preferred. Other oxygen ranges include 0.5 to 1.0, 0.5 to 1.2, 0.5 to 1.3, 0.5 to 1.5, 0.5 to 1.8, 0.5 to 2.0, 0.5 to 2.2, 0.5 to 3.0, 0.5 to 3.5, 0.5 to 4.0, 1.0 to 3.0, 1.0 to 5.0, 1.0 to
  • Acceptable oxygen ranges when the ECS fuel constitutes a significant minority or substantially greater percentage of the composition includes oxygen weight concentrations of 5.0%, 10%, 15%, or 20%, or greater.
  • oxygen weight concentrations 5.0%, 10%, 15%, or 20%, or greater.
  • the fuel compositions will contain 02 concentrations of 2%, 3%, 5% weight, or more. There are no maximum limit anticipated in advanced applications.
  • 02 concentrations maximizing the advantages of Applicant's -131- invention are expressly contemplated, especially those that maximize advance combustion of the metallic.
  • Applicant has unexpectedly discovered that diesel emissions, including particulates, HC, CO and NOx emissions are materially reduced in the practice of Applicant's invention. Combustion chamber deposits, absent additives are also reduced. Such reductions appear to be closely tied to the invention's increases in burning velocities and reductions in combustion temperatures. Applicant has also unexpectedly discovered that due to increases in burning velocities and lower combustion temperatures that diesel engine noise can be controlled, without sacrificing economy and emissions.
  • Applicant's preferred diesel co-fuels enjoy high cetane numbers, especially those exceeding 40 cetane, and -132- can be produced where aromatics are converted to naphthlenes and paraffins.
  • the diesel co-fuels of Applicant's invention include all ASTM grades, including Grade low sulfur No. 1-D, which is a special purpose, light distillate fuel for automotive diesel engines requiring low sulfur fuel and requiring higher volatility than that provided for Grade low sulfur No 2-D, and is met to comply with 40 CFR Part 80 regulations.
  • Grade Low Sulfur No. 2-D which is a general purpose middle distillate fuel for automotive diesel engines requiring low sulfur fuels. It is also suitable for use in non-automotive applications, especially in conditions of varying speed and load. This grade is also in conformity with 40 CFR Part 80 regulations.
  • Grades No. 1-D and No. 2-D which are similar in purpose to their low sulfur counter parts, except that their sulfur contents are not as strictly regulated.
  • Grade No. 4-D which is a heavy distillate fuel, or a blend of distillate and residual oil, for low and medium speed diesel engines in non-automotive applications involving predominately constant speed and load.
  • Type C-B Diesel fuel oils for city-bus and similar operations
  • Type T-T Fuels for diesel engines in trucks, tractors, and similar service.
  • Type R-R Fuels for railroad diesel engines
  • Type S-M Heavy-distillate and residual fuels for large stationary and marine diesel engines.
  • -133- It is anticipated the base co-fuel hydrocarbon composition of Applicant's diesel co-fuels will be tailored to maximize the beneficial aspects of ignition quality, heating value, volatility, gravity, oxidation stability, burning velocity, latent heat of vaporization, etc. , to positively effect combustion, power, economy, emissions, fuel economy, wear, deposit formation, starting, warm starting, driveability, noise, particulate generation and smoke performance of Applicants diesel engines.
  • a cetane number of 30 is desireable.
  • a cetane number of 40 or greater is preferred, especially in low sulfur No. 1-D and low sulfur No. 2-D fuels.
  • An optimal cetane number in the practice of this invention is greater than 48. However, in advanced reformulated diesel fuels cetane numbers greater 50, 55, 60, 65, 70, 75, 80 are contemplated. It is also a preferred practice, when employing low sulfur diesel fuels Grade No. D-1 and No. D-2 to have a minimum cetane index number, a limitation on the amount of high aromatic components, of 40 (as measured by ASTM D 976) or an aromatic content not exceeding 35% by volume (as measure by ASTM D 1319) .
  • Example 94 A composition comprising a diesel fuel meeting ASTM 975 specifications (or fuel oil, aviation turbine, or gas oil) a combustion improving amount of dimethyl carbonate, a co-solvent, and a cyclopentadienyl manganese tricarbonyl -134- compound having a concentration ranging from about 0.001 to about 2.5 gr Mn per gallon; whereby resultant fuel combustion results in improved thermal efficiency and/or fuel economy, and meets minimum flash point temperatures.
  • a No. 2 diesel fuel composition comprising a minor portion of a combustion improving amount of dimethyl carbonate and a cyclomatic manganese tricarbonyl, and a major portion of a base diesel fuel, such that resultant fuel has a cetane of 42 to 50 (preferably substantially greater) , an aromatic content of less than 28 volume percent (preferably less than 20%, more preferably 15%, most preferably less than 10%) , a T-90 temperature of 560°F to 600°F (more preferably less than 540°F, 520°F, 500°F or lower), a sulfur content of 0.08 to 0.12% mass (more preferably 0.05% or sulfur free), an API gravity of 32 to 37 (more preferably higher) , and a minimum flash point of 130°F (optionally obtained via use of co-solvent or salt) .
  • a No. 1 diesel fuel composition containing a minor portion of a combustion improving amount of dimethyl carbonate and a cyclomatic manganese tricarbonyl, and a major portion of a base diesel fuel, such that resultant fuel has a cetane of 48 to 54 (preferably substantially greater) , aromatics representing 10% or less by volume, a T-90 temperature of 460°F to 520°F (more preferably less -135- than 425°F, or lower), a sulfur content of 0.08 to 0.12% mass (more preferably less than 0.05% mass), API gravity of 40 to 44 (more preferably higher) , and a minimum flash point of 120°F.
  • a method for operating a diesel engine comprising injecting the fuels of examples of 88-90 (including a substituted No. 5-heavy) by means of high pressure direct fuel injection system, employing pressures ranging from 30 MPa to 120 MPa, wherein the average vapor particle size is less than 70, 60, 40, 30, 20, 10, 5 microns, more preferably 40-60 microns; whereby burning velocity is increased.
  • combustion system additionally comprises a turbocharger, an ERG system, and wherein the fuel injection system employs sensor input means to regulate fuel injection rate and/or timing.
  • ignition promoters may be employed, individually and/or in combination with ECS compounds, particularly in fuels which require higher temperatures to ignite, which extends their period of ignition.
  • Such promoters include di-tertiary butyl peroxide, alkyl peroxides, alkyl hydroperoxides, alkyl nitrate additives, including ethyl-hexyl nitrate and iso- propyl nitrate, 2.5 dimethyl 2.5 di(tertiary butyl peroxy) hexane, tertiary butylcumyl peroxide, di(tertiaryamyl) peroxide, tertiary butyl hydroperoxide, tertiary amyl hydroperoxide, and mixtures thereof.
  • a low emission No. 2 grade diesel fuel comprising a minimum cetane number of 52, maximum fuel sulfur of 350 ppm (more preferred less than 0.05% mass), aromatics less than
  • Example 103 A low emission diesel fuel comprising a minimum cetane number of 52, maximum fuel sulfur less than 100 ppm, aromatic content of 12%, T-90 temperature of 475°F, bromine number of 0.10, a combustion improving amount of dimethyl carbonate ranging from 0.5 to 4.0% oxygen by weight, and a combustion improving amount of a cyclomatic manganese tricarbonyl compound.
  • a low emission diesel fuel comprising a minimum cetane number of 62, maximum fuel sulfur less than 0.01% weight, 10% aromatic content, olefin by weight less than 30%, 25%, 20.0%, 15.0%, 10%, 7.0%, 6.0%, 5.0%, 4.0%, 3.0%, or less, including olefin free, T-90 temperature of 514°F, bromine number of 0.10, aniline point less than 145°F, a combustion improving amount of dimethyl carbonate and/or optionally triethylene glycol or tetraethylene glycol; and a combustion improving amount of a cyclomatic manganese tricarbonyl compound.
  • Example 104 The composition of Example 104, wherein said composition is combusted in a heavy duty truck engine and -138- HC, CO, NOx, and particulate emissions are 1.3, 15.5, 4.0, 0.10 gm/bhp-hr, respectively.
  • An additional embodiment is the reduction of PM 10 (particulate matter of 10 microns or more) , which is believed to be caused by heavier aromatics. It is also an embodiment to reduce particulate matter to 5.0, 4.0, 3.0, 2.5, 2.0, 1.5, 1.0 mircrons or lower. Applicant's invention is particularly effective to reducing such particulate matter.
  • a method of operating a diesel engine comprising: introducing into the combustion chamber via direct fuel injection under pressure, an atomized ECS compound of sufficiently high burning velocity and latent heat of vaporization, together with a combustion improving metallic, and a reformulated diesel co-fuel; combusting said fuel at extremely high efficiency and rate, whereby particulate combustion emissions are substantially avoided, and if formed are gaseous submicron particles of high kenetic energy.
  • -139- In the practice of this invention all fuels and co- fuels are contemplated to be combusted in engines employing as required advanced lubricating oils and technologies, as an additional means for reducing combustion temperatures and increasing burning velocities.
  • Contamination of lubricating medium can cause or advance combustion chamber and/or other deposits.
  • CCD combustion chamber deposits
  • Non-limiting examples of contemplated lubricating oils include those meeting API CG-4, API CF-4/SG, API CF-4/SH, future PC-7 standards, SAE J300, and/or other standards that operate to minimize piston deposition on operation with low/no sulfur fuels. It is known that piston deposition operates to increase other deposits and hazardous emissions and therefore should be avoided.
  • Figure 8 shows technical enleanment of oxygen containing fuels, which have not been adjusted to elevate depressed T-15 to T-70 regions.
  • lower molecular weight alcohols and ethers depress distillation temperatures due to azeotrophing effect and adversely impact warm driveability, particularly warm engince start up.
  • Figure 8 shows that by adjusting distillation curve, preferably by tailoring underlying hydrocarbon base, or by the addition of higher molecular weight co-solvent, particularly C4, C5, C6 plus alcohols, while maintaining a constant level of oxygen, that an adjusted distillation curve can be acheived, which is above the technical enleanment region. Hence capable of avoiding warm operational driveability problems.
  • Applicant notes the addition of higher molecular weight hydrocarbon material boiling above 220°F, 250°F, 270°F, 300°F, 320°F, 370°F, and therewithin, can be added to the fuel to elevate noted depression. It is normally desireable, while not required, that said hydrocarbon -141- material have some aromaticity and/or azeotrophing property.
  • Figure 8 shows that tailoring of the base hydrocarbon fuel, wherein a hydrocarbon fraction elevates T-60 to T-70 or higher distillation temperature, can be compressed into the mid-range fractions, due to addition of Cl to C3 alcohols and MTBE or ETBE.
  • the higher molecular weight hydrocarbons elevating T-60, T-70 plus fractions are offset by MTBE, ETBE and Cl to C6 alcohols, which depress the T-20 to T-50 fractions.
  • Automotive gasolines contemplated in Applicant's invention include conventional unleaded, reformulated unleaded, low RVP fuels, low sulfur, no sulfur gasolines, low octane gasolines, moderate octane gasolines, high octane gasolines, advanced atomization, vaporization, injector volatilization gasolines, and the like, and/or any gasoline meeting ASTM and/or other regulatory standard, existing and future, and combinations thereof.
  • Non-limiting examples of the gasoline engine/fuel systems include, carburetor, improved gasoline, manifold feed/injected, direct injection, direct injected stratified charge, advanced stratified charge, and the like. It is contemplated that Applicant's automotive gasolines will be in combustion systems employing exhaust catalysts -142- (including three way systems) , regulated emission control systems, and the like.
  • One of the particular objects of Applicant's invention is the incorporation of emission catalysts, OBD II catalyst efficiency monitors, related emission control systems in methods, where upon their operation in the presence of a Mn containing combustion exhaust gas, is not impaired.
  • Another object is the operation of gasoline engines operating under minimum threshold loads, where upon the benefits of Applicant's invention become beneficial.
  • Applicant has discovered that when employing ECS compounds and minor amounts of metallic, e.g. Mn, that optimum fuel economy and temperature reduces do not start to occur until loads are at least 12.5 ihp to 16.0 ihp.
  • An object of instant invention is to employ and make gasolines having superior combustion, emission and operational features with a very wide range of octane value
  • Another object of this invention is improved combustion of gasolines and the operation of internal combustion engines at altitude. At altitudes above sea level, particularly those greater than 1,500, 2,000, 2,500, 3,000, 3,500, 4,000, 4,500, 5,000, 5,500, 6,000, 6,500, 7,000, 7,500, 8,000, 8,500, 9,000, 9,500, 10,000, 10,500, -143- 11,000 feet above sea level in combustion in gasoline and diesel engines show incomplete combustion and elevated CO, particularly in older engines.
  • LHV ECS compounds e.g. DMC, methanol, ethanol
  • LHV ECS compounds e.g. MTBE, ETBE
  • An additional object of this invention is the improved combustion, decomposition and general deposition of MTBE and/or other known carcinogenic ethers into more benign or benign compounds, as to avoid contamination of ground and surface water.
  • Applicant has discovered that by employing a combustion accelerating ECS compound, especially one whose burning velocity and/or heat of vaporization is greater than MTBE's, especially an ECS compound releasing high amounts of free radicals, and optionally together with at least one combustion improving amount of a metallic (e.g.
  • Shell Chemical's SparkAid or a potassium salt and/or a manganese compound or other useful metallic in combination with an MTBE or ETBE containing fuel, the MTBE/ETBE containing fuel enjoys better combustion and MTBE decomposes at an accelerated rate, compared to MTBE containing fuel alone.
  • Example 108 An ameliorative fuel composition characterized as an aviation/automotive gasoline, diesel, turbine, fuel oil, or other fuel containing MTBE, ETBE, TAME, or mixture; said fuel additionally containing a combustion improving amount of an ECS compound (preferably DMC) having a burning velocity and/or a latent heat of vaporization greater than MTBE; and optionally a combustion improving amount of at least one metallic; whereby enhanced attributes of combustion accelerate decomposition of carcingenic ether prior to its emission into atmosphere.
  • ECS compound preferably DMC
  • a method of 108 reducing potentially carcinogenic ether concentrations from atmosphere comprising combusting an MTBE containing fuel in combination with DMC and optionally a combustion improving metallic.
  • Example 108 A fuel compostion of Example 108, wherein the fuel is a reformulated gasoline and contains MTBE, ETBE, TAME, or mixture, said ether or mixture comprising an amount equal to or less than 2.7, 2.5, 2.2, 2.1, 2.0, 1.9, 1.8, 1.7, 1.6, 1.5, 1.4, 1.3, 1.2, 1.1, 1.0, 0.9, 0.8, 0.7, 0.6, 0.5, 0.4, 0.3 weight percent oxygen of the fuel; and a ECS compound having a burning velocity and a heat of vaporization greater than said ether and a minimum oxygen weight content of at least 0.02%, such that total fuel oxygen by weight is less than 6.0%, 5.0%, 4.0%, 3.7%, 3.0%, 2.7%, 2.5%, 2.2%, 2.0%, 1.9%, 1.5%, 1.2%, 1.1%, 1.0%, or less; and optionally, a combustion improving amount of at least one metallic compound.
  • An improved MTBE fuel composition comprising: a low or no sulfur hydrocarbon base fuel, MTBE, and an ECS compound having a burning velocity greater than MTBE (preferably 20%, 30%, 40%, 50%, 60%, or more, with DMC preferred), wherein total oxygen by weight of the fuel does not exceed 8.0%, 6.0%, 5.0%, 4.5%, 4.0%, 3.7%, 3.5%, 3.0%, 2.7%, 2.5%, 2.25%, 2.2%, 2.0%, 1.9%, 1.8%, 1.5%, 1.2%, 1.1%, 1.0%, 0.8%, 0.7%, 0.5%; and a burning velocity improving amount -147- of a metallic, including a potassium salt marketed by Shell Chemical Corporation known as SparkAid; and/or optionally an anti-knock or combustion improving amount of a manganese metallic compound (in lieu of or in addition to the potassium salt) .
  • Example 111 The Composition of Example 111, wherein the fuel composition is unleaded, containing less than 400, 350, 300, 250, 200, 150, 100, 50, 40, 30, 20, 10, 5, 0 ppm sulfur, and comprised of 10:1, 9:1, 8:1, 7:1, 6:1, 5:1, 4:1, 3:1, 2:1, 1:1, 1:2, 1:3, 1:4, 1:5, 1:6, 1:7, 1:8, 1:9, 1:10 parts oxygen/or parts MTBE (or parts MTBE/ETBE/TAME and mixture) to part ECS compound; and/or wherein the metallic concentration of metallic potassium or potassium salt is less than 3.0, 5.0, 6.0, or 1.0 to 4.0, 1.0 to 10.0, 2.0 to 15.0, 2.0 to 20.0, 3.0 to 30.0, 4.0 to 35.0, or greater, ppm of the fuel; and/or wherein the manganese concentration is at least 1/64, 1/32, 1/16 gram Mn/gal of the fuel composition.
  • Applicant's invention includes fuel compositions, wherein combustion burning velocities are increased over typical base compositions. This may be accomplished by formulating a co-fuel composition to include hydrocarbon substitutents having increased burning velocities, and/or by including combustion catalysts or combustion improving metallics such as Shell's potassium salt.
  • Example 114 A combustion composition comprising: an low or no sulfur gasoline or diesel co-fuel; constructed to have increased burning velocities over typical base fuel; and an organ-maganese compound; and optionally a burning velocity improving amount of additional metallic.
  • Example 114 wherein constructed/reconstructed co-fuel has a burning velocity at least 2.0%, 3.0%, 5.0%, 7.5%, 9.0%, 10%, 12%, 15%, 17%, 20%, 25%, 30%, 40%, 50%, or 60% or higher than unmodified base fuel; and a manganese concentration exceeding or equal to 1/128, 1/64, 1/32, 1/16, 3/32 gr Mn/gal; and wherein said fuel optionally contains a burning velocity amount of -149- a combustion acceleration amount of separate metallic, preferably a potassium salt in a concentration not exceeding 25, 20, 18, 16, 14, 12, 10, 8, 7, 6, 5, 4, 3, 2, or 1 ppm (metallic or metallic compound) ; and the composition optionally contains means of reducing combustion temperature (as set forth in the specification herein) , but not limited to distillation modification and/or employing a combustion chamber deposit control additive in a concentration of 50 to 400, 100 to 600, 150 to 800, 150 to 1000, 200 to 1500 mg/kg or other amount sufficient to avoid combustion chamber deposits; whereby combustion temperatures are reduced
  • Applicant's co-fuel gasolines should be constructed to minimize hazardous pollutants to the maximum extent possible. Thus, sulfur concentrations should approach sulfur free levels, if possible, harmful heavy aromatics (while their effect is substantially mitigated in the practice of this invention) should be reduced as much as practical.
  • co-fuels should be formulated to reduce volatile organic compounds (VOC's), NOx, benzene, butadiene, formaldehyde, acetaldehyde, polycyclic organic material. Reformulated gasolines constructed under the complex model are expressly contemplated.
  • An important embodiment of Applicant's invention is its capacity towards ultra clean combustion emissions, due to the nature of its combustion. Consequently, in addition to the reduction of most hazardous emissions, it is an -150- embodiment to avoid combustion chamber deposits, which now be caused by the use of detergents to keep intake valves clean.
  • An additional embodiment is the reduction of PM 10 (particulate matter of 10 microns or more) , which is believed to be caused by heavier aromatics. It is also an embodiment to reduce particulate matter to 10.0, 9.0, 8.0, 7.0, 6.0, 5.0, 4.0, 3.0, 2.5, 2.0, 1.5, 1.0, 0.5, 0.25 mircrons or lower. Applicant's invention is particularly effective to reducing such particulate matter (PM) in both gasolines and fuels heavier than gasolines (e.g. diesel) .
  • Example 116 wherein the fuel composition contains aromatic concentrations of 30%, 27%, 25%, 22%, 20%, 19%, 18%, 17%, 16%, 15%, or less by vol. -151-
  • Example 118
  • a conventional or reformulated unleaded fuel composition comprising: sulfur at less than 300, 250, 200, 150, 100, 60, 50, 20, 10, 5 ppm, including range of 5 ppm to 50 ppm or 15 to 25 ppm sulfur or sulfur free; a polynuculear free aromatic concentration of less than 50%, 45%, 40%, 35%, 30%, 27%, 25%, 22%, 20%, 18%, 16%, 15%, 12%, 10%, 9%, 8%, 7%, 6%, 5%, 4%, or less, by volume, including ranges therein, or aromatic free composition; a none C4 to C5 olefinic concentration less than 20%, 15%, 13%, 12%, 11%, 10%, 9%, 8%, 7%, 6%, 5%, 4%, 3%, 2%, 1% including range of 3.0% to 5.0% by volume (also including olefin free concentrations); a benzene concentration of 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%,
  • Example 119 The vapor composition of method Example 118, absent metallic.
  • a method of operation an internal gasoline combustion engine comprising: mixing a convention, non- convention, or reformulated gasoline with a combustion improving amount of an ECS compound and a combustion improving amount of MMT and/or other metallic (including the fuel of Example (im abv) ; combusting said fuel in said engine, wherein engine is under load of at least 12.5 ihp (more preferably at least 16.0, 20.0 ihp), wherein fuel economy is increased.
  • the method of 120 wherein the load is approximately 20 ihp and fuel economies are improved 0.5%, 1.0%, 2.0%, 3.0%, 5%, or 2.0% to 30%, and/or combustion temperature is reduced compared to conventional fuel, including temperatures from 2°F to 10°F, 5°F to 20°F, 10°F to 50°F, 15°F to 60°F, 20°F to 100°F, 25°F to 125°F, 25°F to 150°F, 50°F to 200°F, 25°F to 225°F, 25°F to 250°F, 50°F to 300°F, or more.
  • It is another object of instant invention is improving burning velocity/combustion temperatures by modifying T-90 and/or end-boiling point distillation fractions enhancing combustion, improving mileage, driveability and/or reducing hazardous combustion emissions.
  • Applicant's gasolines including RFG, have a driveability index as defined by (1.5 x T 10 ) + (3 X T 50 ) + (T 90 ) Of less than 1370, 1330, 1300, 1295, 1275, 1236, 1200, 1190, 1180, 1170, 1160, 1155, 1150, 1140, 1130, 1120, 1100, 1090, 1080, 1075, 1050, 1000, 975, 960, 950, 945, 940, 935, 930, 925, 920, 910, 900, 875, 850, 840, 825, 800, or less.
  • T50 temperatures simultaneously equal or exceed 150, 155, 160, 165, 170, 175, 180, 185, 190, 195 degrees F.
  • An acceptable T50 range includes 190 to 210 degrees F. It is also preferred that the ⁇ -10 distillation fraction be 160, 155, 150, 145, 140, 135, 130, 125, 120, 115, 110, 105, 100, 98, 96, 95, 94, 93, 92, 91, 90, 89, 88, 87, 85, 80 degrees F, or less.
  • An acceptable T90 range includes 280 to 300 degrees F. -154- Example 122
  • An unleaded reformulated gasoline composition whose driveability index is less than 1160, 1150, 1140, 1130, 1120, 1110, 1100, 1080, 1050, 1040, 1020, 1000, 995, 990, 985, 982, 980, 978, 975, 973, 970, 968, 967, 965, 964, 960, 950, 945, 940, 935, 930, 927, 925, 922, 920, 915, 910, 905, 900, 895, 890, 885, 880, 875, 870, 865, 860, or less; whose t-50 mid range exceeds 170°F, 175°F; whose t-10 is less than 130°F, 125°F, 120°F, 115°F, 110°F, 100°F, 95°F, 90°F, 85°F, 80°F, 75°F, 70°F; said composition containing a combustion improving amount of a metallic; a burning velocity
  • the unleaded reformulated gasoline of example (im abv) whose driveability index is less than 1120, 1050, 1000, 970, 940, 930; and whose T-10 temperature is 100°F to 90°F; RVP is 9.0, 8.7, 8.5, 8.2, 8.1, 8.0, 7.9, 7.8, 7.7, 7.6, 7.5, 7.3, 7.0, 6.9, 6.8, 6.7, 6.6, 6.5, 6.4, 6.2, 6.0, 5.9, 5.8, 5.6, or less;
  • RVP reductions which are tied to reductions in T-10, are contemplated and it is preferred that Applicant's gasolines generally be lower RVP fuels 4.0 -155- to 12.0 psi, more preferred are those 4.0 to 9.0 psi, 4.0 to 8.0 psi, 4..0 to 7.5 psi, 6.0 to 7.0 psi, 6.0 to 6.5 psi, 1.0 to 6.0 psi, 1.0 to 3.0 psi, 1.0 to 2.0 psi, or lower.
  • Contemplated RVP's include 5.0, 5.1, 5.2, 5.3, 5.4, 5.5, 5.6, 5.7, 5.8, 5.9, 6.0, 6.1, 6.2, 6.3, 6.4, 6.5, 6.6, 6.7, 7.8, 6.9, 7.0, 7.1, 7.2 (max), 7.3 (max), 7.4 (max),
  • Winter RVP's may range from 11.5 to 12.0 psi, or higher.
  • Summer RVP's may range from 6.5 to 6.9 psi.
  • t-10 temperature is less than 125°F, 120°F, 115°F, 110°F, 100°F, 95°F, 90°F, 85°F, 80°F; and RVP is 6.4, 6.5,
  • the finished hydrocarbon portion of the gasoline composition e.g. absent oxygenates and metals, etc.
  • particularly reformulated fuels including automotive and aviation gasolines
  • compositional/ component substitution and/or modification leading to a higher latent heat of evaporization can be normally be accomplished absent losses in the fuel's heating. Often, heating values increase.
  • reductions of end point and/or T-90 temperatures be in such an amount that the average latent heat of evaporization of the adjusted fuel (e.g. the reduced fuel) , such that its latent heat of vaporization is 0.5% to 10.0%, or greater, than the unadjusted base fuel.
  • T-90 temperatures will range from 240°F, 250°F, 255°F, 260°F, 265°F, 270°F, 275°F, 278°F, 280°F, 285°F, 290°F, 292°F, 293°F, 294°F, 295°F, 296°F, 297°F, 298°F, 299°F, 300°F, 305°F, 310°F, 315°, 320°F, 325°F, 330°F, 335°F, 340°F, 345°, and ranges therein, including 280°F to 300°F, 265°F to 295°F.
  • T-90 temperature is function of improved latent heat of vaporization and/or improved combustion velocities, elicited by the reduction, which in turn is dependent upon the base fuel. Modifying differing fuels (and hydrocarbon -157- streams) will elicit differing response. Thus, variability in actual amount of T-90 reduction is anticipated.
  • Example 125 A conventional or reformulated gasoline composition wherein higher boiling point fuel fraction is cut such that end point and/or T-90 boiling temperatures of the gasoline are reduced; and whereby the cut clear fuel's (e.g. reduced t-90 fuel's) average latent heat of vaporization is at least 0.5% and more preferably 1.0%, 1.5%, 2.0%, 2.5%, 3.0%, 4.0%, 4.5%, 5.0%, 5.5%, 6.0%, 7.0%, 8.0%, 9.0%, 10%, 12.0%, 15.0%, 20.0%, 25.0%, 30.0%, or 2.0% to 50.0%, or greater, than the clear uncut fuel.
  • the cut clear fuel's e.g. reduced t-90 fuel's average latent heat of vaporization is at least 0.5% and more preferably 1.0%, 1.5%, 2.0%, 2.5%, 3.0%, 4.0%, 4.5%, 5.0%, 5.5%, 6.0%, 7.0%, 8.0%, 9.0%, 10%, 12.0%, 15.0%, 20.0%, 25.0%, 30.0%, or 2.0
  • composition of 125 additionally comprising sufficient quantity of a combustion chamber deposit control/modification additive or additive package (such as Texeco's CleanSystem 3 ) ; and a minor amount of Mn; and optionally an enhancing injector and/or intake valve deposit control additive; whereby adverse hydrocarbon emissions are controlled.
  • a combustion chamber deposit control/modification additive or additive package such as Texeco's CleanSystem 3
  • Example 127 The composition of 126, wherein after the inclusion of deposit control additive, or additive packace, combustion temperatures are reduced. -158- Example 128
  • adjusted and unadjusted T90 gasolines both comprise 1.0% to 2.0% oxygen by wt of MTBE and a cyclomatic manganese tricarbonyl having a Mn concentration from 0.001 to 0.03125 gr. mn/gal, such that fuel economy of the reduced boiling temperature fuel is improved over the unadjusted fuel.
  • Example 129 The example of 125, wherein T-90 temperatures of the adjusted reformulated fuel is approximately 260°F to 280°F, or less, and/or the driveability index is less than 1160, 1155.
  • toluene will constitute a greater compositional role, and exist in greater volume concentrations in future gasoline compositions, including aviation fuels.
  • Contemplated toluene volume percent include 0.2, 0.5, 1.0, 2.0, 2.5, 3.0, 5.0, 5.5, 6.0, 7.0, 8.0, 10.0, 12.0, 15.0, 16.0, 18.0, 20.0, 25, 30.0, 35.0, 40.0, 50.0, 60.0, 70.0, 80.0, 90.0, 100.0 percentage.
  • Reid Vapor Pressures are contemplated to for example equal to or less than 9.9, 9.5, 9.0, 8.7, 8.5, 8.2, 8.1, 8.0, 7.9, 7.7, 7.5, 7.0, 6.8, 6.5, 6.2, 6.0, 5.8, 5.6 PSI, or less.
  • Limitations on sulphur concentrations are contemplated, including those less than 550, 500, 450, 400, 350, 300, 250, 200, 150, 100, 75, 50, 25, 20, 15, 10, 5 ppm, or less than 0.002 wt %, -159- including sulfur free compositions, and naphtenes at less than 7% (or less than 0.5%, if practical) by volume are contemplated.
  • Emissions of paramount concern is toxic emissions, which this invention unexpectedly reduces, on a mass basis, on the order of 5%, or more, over conventional and other reformulated gasolines.
  • This is a most unexpected development. For example, it has been found that the levels of 1,3-butadiene (a regulated toxic) increase in the presence of MTBE when reducing olefins and T-90 temperatures. Furthermore, it has been found that formaldehyde exhaust emission actually increase when aromatics are reduced and/or when MTBE is added.
  • An unleaded, phosphorus free, reformulated gasoline composition having a max of 8.5, 8.0, 7.5, 7.8, 7.7, 7.6, 7.5, 7.4, 7.4, 7.3, 7.2, 7.1, 7.0, 6.9, 6.8, 6.7, 6.6, 6.5, 6.4, 6.3, 6.2, 6.1, 6.0, 5.9, 5.8, 5.7, 5.6, 5.5, 5.4, 5.3, 5.2, 5.2, 5.0 psi RVP; a max of 5.0% to 10.0% vol olefins (6.0% to 9.0%, 6.0% to 10.0%, 5.0% to 8.0%), a max Of 27, 25, 20, 19, 18% vol aromatics (preferably 15%, 10%, or lower), a max of 1.1, 1.0, 0.9, 0.8% benzene (preferably less than 0.7%, 0.6%, 0.5%, 0.4%, 0.3%, 0.2% or benzene free) , a max of 100 ppm sulfur (preferably 50 ppm or less or sulfur free), an 02 concentration ranging from 1.
  • 160°F to 230°F (170°F to 205°F, 175°F to 210°F, 175°F to 225°F, 180°F to 210°F) , maximum T-50 temperature equal to or less than 100, 110, 120, 130, 140, 145, 150, 155, 160, 170 degree F; a driveability index number equal to of less than 1200, 1190, 1180, 1170, 1160, 1155, 1150, 1140, a bromine number of not greater than 27, 26, 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, or less; an average latent heat of vaporization of 890, 900, 905, 910, 915, 920, 925, 930, 910 to 930, 915 to 940, 915 to 950, 920 to 960, 925 to 970, 930 to 980 BTU/gal, or greater.
  • Example of 130 wherein the fuel contains an ashless dispersant, induction control/deposit control additive (including combustion chamber, port fuel injector, and intake valve deposit additive) in conformity with ⁇ 211 (1) and appropriate regulations of the Clean Air Act; and optionally containing a minor amount of a co-solvent to enhance water solubility, such as hexanol.
  • induction control/deposit control additive including combustion chamber, port fuel injector, and intake valve deposit additive
  • Method of combustion example 130 wherein the temperature of combustion is sufficiently reduced that under for example a load of 20 indicated horse power exhaust gas temperatures are reduced by at least 10°F to 50°F (or more) , whereby the average exhaust gas temperature entering the exhaust gas inlet is less than 1400°F (or such other temperature that manganese oxide coating of the catalyst wash coat and/or monitor does not appreciably occur) .
  • a method for controlling the combustion formation of hazardous heavy manganese oxides comprising: Mixing an unleaded hydrocarbon fuel base, reformulated gasoline base, diesel base, or reformulated diesel (including those set forth herein) with a burning velocity increasing and/or combustion temperature reducing amount of an ECS compound, including one selected from the group consisting of carbonic acid dimethyl ester, methyl tertiary butyl ether, ethyl tertiary butyl ether, methylene di methyl ether, tertiary methyl amyl ether, diisopropyl ether, Cl to C6 alcohols, and mixture; and a combustion improving amount of at least one metallic compound, preferably a cyclomatic manganese tricarbonyl compound; combusting said fuel in an engine operating under load equal to or in exess of approximately 16.0 ihp; whereby combustion temperatures are reduced; exhausting engine out gas through an emission -162- control system employing a reduction catalyst, particulate trap, or three way exhaust catalyst
  • Example 136 The method of Example 135, additionally comprising via the introduction of an ESC compound into said fuel, igniting said fuel, wherein H, H2, OCH3, or OH free radicals are formed in sufficient quantity as intermediate combustion product to increase said resultant fuel's burning velocity over burning velocity of base fuel alone, absent ESC compound and/or metallic.
  • Example 135 The method of Example 135, wherein said engine is operated under a load of 20 ihp, or greater, whereby expected engine out combustion exhaust/gas temperatures or combustion temperatures are reduced by up to approximately 15°F to 59°F, or more, and/or where fuel economy is improved.
  • Example 137 The method of Example 137, wherein said resultant fuel has a combustion chamber deposit reducing/control additive -163- and/or a mid-range and/or T-90/end-boiling distillation fraction temperature lower than existing conventional gasoline or diesel (or as otherwise set forth herein) .
  • a method wherein reduced temperature engine exhaust gases are from an unleaded gasoline system and are vented through an exhaust emissions catalyst, whereby emission system's onboard catalyst monitoring does not fail due to false catalyst oxygen storage capacity readings and/or oxide desposition upon the monitor.
  • a low toxic fuel economy improving composition comprising an unleaded fuel composition comprising phosphorus free hydrocarbons, having a max of 8.0, 7.0, 6.5, or 6.0 psi RVP; a max of 6.0%, 5.0% vol olefins, a max of 25%, 20% vol aromatics (preferably 15%, 10%, or lower), a max of 0.8% benzene (lower or benzene free) a max of 40 ppm sulfur (lower or sulfur free) , a total 02 concentration ranging of 1.0 to 2.7% wt or 3.5% 02 wt of dimethyl carbonate, MTBE, ETBE, TAME, or ethanol, a cyclomatic manganese tricarbonyl compound at 1/64 to 3/16 gr.
  • Mn/gal -164- (preferably 1/32 gr. Mn) , a max T-90 temperature of 300°F, 280°F (preferred) , a T-50 temperature of approx. 170°F to 230°F., a minimum (R+M)/2 octane of 87, a bromine number of 20 or less, an average latent heat of vaporization of 900, 910, 920 or more BTU/gal at 60°F; a heating value greater than 106,000 btu/gal at 60°F (more preferably greater than 108,000, 114,000 btu/gal) ; whereby toxic 1,3-butadiene, formaldehyde, or acetaldehyde emissions are reduced and/or fuel economy is improved.
  • the Example of 141 wherein the oxygenate is MTBE at 2.0% wt and the average latent heat of vaporization of the fuel exceeds 900 BTU/gal @ 60°F and is preferably greater than 905 BTU/gal @ 60°F; MMT concentration is 1/32 gr./gal; and average heating value of the composition exceeds 106,000 btu/gal at 60°F; has an average laminar burning velocity of at ambient conditions greater than 48 cm/sec.
  • the MTBE composition of example 142 wherein the MMT concentration is greater than 1/32 gr mn/gal.
  • Example 144 The examples above, wherein the oxygenate is DMC and the MMT concentration is greater than 1/32 gr mn/gal. -165- Example 145
  • preferred gasoline compositions include, but are not limited to those which have the following specifications:
  • Aromatics (max volume %) 32.0 20.0-25.0 .0-10.0
  • MMT Metallic
  • a composition of matter comprising; an unleaded conventional or reformulated gasoline composition (the later comforming with ⁇ 211(k) of Clean Air Act), said -166- composition additionally characterized as having a minimum latent heat of vaporization at 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156 btu/lb ⁇ 60°F, and optionally a minimum laminar flame burning velocity of 45, 46, 47, 48, 49, 50, 51 cm/sec.
  • Example fuels of 145a, B and C of TABLE 6 above wherein 1) said fuels contain Applicant's oxygenated means and a 2) combustion improving amount of manganese, and 3) wherein the combined evaporative emissions of said fuels' storage and its delivery to a combustion chamber, and emitted atmospheric combustion emissions, are 4) such that in the year 1995 said fuel's volatile organic compound emissions and toxic air pollutants, on a mass basis, are 15% lower than the baseline gasoline as defined under ⁇ 211 (k) of the Clean Air Act, and are 5) such that in the year 2000 said fuel's volatile organic compound emissions and toxic air pollutants, on a mass basis, are 25% lower than said baseline gasoline.
  • An unleaded, phosphorus free, reformulated gasoline composition fuels having a max of 8.0, 7.2, 7.0, 6.5 psi RVP, a max of 8.0%, 6.0% vol olefins, a max of 20-25% vol aromatics, a max of 1%, 0.8% benzene (preferably less), a max of 300-40 ppm sulfur (preferably lower or sulphur free), an 02 concentration ranging from 2.0 to 2.7% wt or -167- 3.5% 02 by weight of dimethyl carbonate, a cyclomatic manganese tricarbonyl compound or mixture at 1/64 to 3/16 gr.
  • Mn/gal (preferably greater than 1/32 gr/gal) , a max T- 90 temperature of 300°F to 320°F (preferably 280°F or lower) , a preferred T-50 temperature of approx. 170°F to 220°F; a minimum latent heat of vaporization of 900, 905 BTU/gal ⁇ 60°F (preferably greater than 920 BTU/gal ⁇ 60°F ) ; a minimum heating value of the composition assuming 2.0% 02 weight Of 106,000, 110,000, 113,000, 116,000 BTU/gal ⁇ 60°F, and a minimum average laminar burning velocity at ambient conditions of 48 cm/sec (50 to 52 cm/sec or more preferred) .
  • Example 148 The above example wherein the composition additionally contains deposit control additives in conformity with ⁇ 211 (1) and related Sections/regulations of the Clean Air Act.
  • Example 149 Example 147, wherein the composition optionally contains at least one C4 to C6 alcohol or other additive assuring hydroscopic stability (water solubility) .
  • Example 150 A fuel injection system that injects the fuel vapor of Example 19, under acceptable pressure into a combustion chamber, wherein average vapor particle sizes are less than 60 microns, and wherein computer enhanced EGR, an onboard -168- oxygen sensor, injection sensors, air inlet cooling system or turbocharger is employed; whereby fuel synergism exists.
  • Applicant notes that said mechanical systems are synergistic to Applicant's invention in they show a greater incremental improvement for ECS fuels than clear co-fuels. Thus, the incremental improvement for ECS fuels divided by the incremental improvement for co-fuel (absent ECS component) is greater than one.
  • a system wherein the fuel injection system injects a fuel vapor under optimum pressure into a combustion chamber, wherein average vapor particle sizes are 10, 20, 30, or 40, wherein a turbocharger, EGR system, an onboard oxygen sensor, and injection sensors are simultaneously employed; whereby fuel economy is improved by at least 2%.
  • a method wherein the combustion chamber is designed to increase turbulent burning velocity, and wherein the compression ratio is 2.0:1 to 6.5:1; 7.5:1, 8.0:1, 8.5:1;
  • Example 153 [Omitted] -169- Example 154
  • combustion chamber is designed to increase turbulent burning velocity, and wherein the compression ratio exceeds 17:1.
  • a method of operation wherein at least 30% of the U.S. automotive fleet operates on said fuels, whereby total reference concentrations of air borne manganese emitted from such operation, does not exceed 0.05 ug/m 3 or EPA standards, which ever is lower.
  • Applicant's gasoline compositions expressly contemplate reductions in emissions and compositional characteristics as set forth in Tables 7 and 8, below. -170- TABLE 7 COMPLEX MODEL STANDARDS FOR RFG
  • Manganese concentrations may range from 1/64 to 1/4 gr. Mn/gal.
  • An example of a reformulated gasoline comprises a gasoline base with less than 0.01% wt sulfur, MTBE 7% max. by vol., benzene 5.0% or less by vol., kerosene 4.0% or less by vol., existent gum 5 mg/100 ml max, unwashed gum 20 mg/100 ml max, RON 96.0 to 89.0, density at 15°C 0.783 max, T1070°C max, T50125°C max, T90180°C max, F.B.P. 220°C max. Residue 2% max, copper corr. max 1, RVP 44-78 kPa, induction time min.
  • VOC's are effected mostly by RVP
  • Aromatics Sulphur
  • NOx are effected mostly by Sulphur
  • Aromatics Olefins
  • Toxics are effected mostly by Benzene, Aromatics, oxygen.
  • International Application No. PCT/US95/02691 presents reformulation practice, which is incorporated by reference.
  • a reduction in sulfur from 340 ppm to approximately 50 ppm causes a reduction of NOx, toxic, and VOC emissions of about 11.0%, 8.5%, and 3.5%, respectively. It appears that reductions in NOx emissions are strongly influenced by reductions in sulfur content.
  • sulfur concentrations less than 40 ppm are particularly preferred. Sulfur content 30 ppm or less (or sulphur free) is even more preferred. Again, the operation of this invention will permit environmentally acceptable NOx, Toxics, and VOC's even at sulfur concentrations higher than currently permitted under the regulations.
  • sulfur concentrations on the order of 200 ppm or more appear to be acceptable, due the increased burning velocity and reduced combustion temperatures of instant -173- invention, which appear to inhibit sulfur's adverse NOx and Toxic emission characteristics.
  • Aviation Gasoline also contemplates aviation gasoline co- fuel applications and resultant fuels meeting ASTM D 910 specifications (see TABLE 9) , especially those that are lead free. However, unlike other embodiments of Applicant's invention, while less preferred aviation gasolines may contain minor amounts of lead. However, Applicant's preferred embodiment is lead free.
  • Applicant's invention contemplates a broad application in aviation gasolines for civil and military use, including those applications, which do not comply with ASTM standards.
  • TABLE 9 is intended to define aviation gasoline suitable for most types of spark-ignition aviation engines; however, certain equipment or conditions of use may require fuels having other characteristics.
  • a major problem with aviation gasolines and related combustion resides in the substantial incompleteness of combustion at altitude. Combustion incompleteness is a function of the fuel's composition, air/fuel ratio's, altitude of operation, and generally the amount of air passing through the engine.
  • the principal advantage of Applicant's invention is that it radically improves the thermal efficiency or useful amount of work available from a given amount of fuel under operation at altitude, compared to traditional fuels. -174- In today's aviation gasoline engines the completeness of combustion under altitude conditions approaches 85% (see M. Scott, R Stansfield, T. Tait, J. Inst. Petroleum. 37, 487 (1951)).
  • a aviation fuel boiling meeting ASTM specifications comprising: an ESC fuel (containing preferably MMT at 0.25 to .75 Mn gr/gal of finished fuel and DMC ranging from 0.5% to 10.0% of finished fuel), a aviation co-fuel comprised substantially of hydrocarbons; such that resultant fuel meets strict ASTM standards; and is characterized as having a latent heat of vaporization exceeding 120, 130, 140, 150, 155, 160, 165, 170 BTU/lb; and whereby said fuel when combusted in an internal combustion engine at altitude of at least 5,000 feet above ground level increases the completeness of combustion to amount greater than 85%, 86%, 87%, 88%, 89%, 90%, or alternatively increases thermal engine efficiency by at least 2.0%, 3.0%, 5.0%, 7.5%, 10.0%, or more, over the unadjusted aviation co-fuel. -175-
  • Dye content Permissible blue dye max, mg gal 0.5 4.7 5.7 Permissible yellow dye, G max, mg/gal none 5.9 none Permissible red dye," max, mg/gal 8.65 none none none
  • Grade 80 may be required to be free from tetraethyllead.
  • the fuel shall not contain any dye and the color as determined in accordance with Test Method D 156 shall not be darker than +20.
  • the only blue dye which shall be present in the finished gasoline shall be essentially 1,4- diaHylamino-anthraquinone.
  • the only yellow dyes which shall be present in the finished gasoline shall be essentially p- diethylammoazobenzene(ColorIndexNo.ll021)orphenol,2,2'-[3 '-dimethyl][l,l'-biphenyl]-4,4'- diyljbis(azo) bis [4-nonyl] (Color Index Solvent Yellow No. 107), or 1,3-Benzenediol, 2,4-bis [(alkylphenyl)azo-].
  • red dyes which shall be present in the finished gasoline shall be essentially methyl derivatives of azobenzene-4-azo-2-naphthol (methyl derivatives of Color Index No.26105) or alkyl derivatives of azobenzene-4-azo-2-naphthol.
  • the tetraethyllead shall be added in the form of an antiknock mixture containing not less than 61 weight % of tetraethyllead and sufficient ethylene dibromide to provide two bromine atoms per atom of lead.
  • the balance shall contain no added ingredients other than kerosine, and an approved inhibitor, and blue dye, as specified, herein.
  • the gum content shall not exceed 10 mg per 100 Ml and the visible lead precipitate shall not exceed 4 mg per 100 mL.
  • the permissible antioxidants shall not exceed 8.4 lb per 1000 bbl (42 gal).
  • M Permissible antioxidants are as follows: N,N'-diisopropyl-para-phenylenediamine N,N'-di-seconda_y-butyl-para-phenylenediamine 2,4-dimethyl-6-tertiary-butylphenol
  • Grades 100 and 100LL represent two aviation gasolines identical in anti-knock quality but differing in maximum lead content and color. The color identifies the difference for engines that have a low tolerance to lead.
  • each grade must meet a minimum lean mixture aviation rating and a minimum rich mixture super-charge rating.
  • Aviation gasoline has traditionally been comprised of substantial quantities of isooctane and/or alkylated material. Applicant contemplates his aviation gasoline co- fuels may consist of blends of refined hydrocarbons derived from crude petroleum, natural gasoline, alkylates, blends thereof from synthetic hydrocarbons or aromatic hydrocarbons, or both. Aviation gasolines has may derived in whole or part from bio-substituents. As thermal efficiency improvements are a principal object of this invention, aside from constructing fuels to acheive the maximum latent heats of vaporization and to meet strict ASTM standards (including heat of combustion, etc.).
  • Applicant's preferred order of fuel components are: paraffins, monocyclic napthenes, cyclo-olefins, bicyclic naphenes, aromatic monocyclic with side chains, aromatic monocyclics and aromatic bicylics. -177- Applicant has found that by prioritizing his fuel components, after meeting his LHV object and ASTM standards, that Applicant is further able to improve thermal efficiency. Additional avaition gasoline practice is disclosed in International Application No. PCT/US95/02691 and incorporated by reference.
  • Additives other than tetraethyl lead, dyes, and antioxidants specified in Table 9 are permitted under 5.1 and Section 7 of ASTM specification D 910. These include fuel system icing inhibitor and special purpose additives.
  • DMC is employed as the ECS compound of choice. Due to the high relative concentrations of oxygen (e.g. 53% by weight), smaller volume quantities of DMC need be employed to acheive the same oxygen concentrations as MTBE (e.g. 18.2% by wt) , TAME (e.g. 15.7% by wt) .
  • DMC has lower total heat per gallon (e.g. approx. 57,000 btu/gal) compared to MTBE's (e.g. approx 94,200 btu/gal), TAME (100,600 btu/gal), DMC has superior heat of combustion on a per oxygen weight basis. Consequently, a co-fuel can maintain a greater proportion of its heat of combustion, given the same amount of oxygen, when said oxygen is added by DMC as compared MTBE, ETBE or TAME. Thus, the addition -178- of DMC reduces the amount of additional high heating material necessary to acheive minimum heats of combustion.
  • Example 159 A method wherein a enhanced combustion vapor is combusted in a aviation gasoline engine; and is derived from DMC representing 0.01% to 10.0% oxygen by wt in the fuel (more preferably 0.1 to 5.0%), at least one metallic in a concentration of 0.001 to about 2.5 gr/gal (preferably 0.001 to 1.5 gr/gal, more preferably 0.001 to 0.75), an aviation gasoline co-fuel; wherein combined fuel is characterised as having a minimum knock octane number of 80, or 100 and minimum performance number of 87, or 130, optionally containing lead, a max T10 distillation temperature of 75°C, a minimum T40 temperture of 75°C, a maximum T50 temperature of 105°C, a maximum T90 temperature of 135°C, a maximum end temperature of 135°C, where the sum of the T10 and T50 temperatures is a minimum of 135°C, a maximum sulfur content of 0.05 wt%, optionally a minimum net heat of combustion of 17,500, 1
  • a method of operating a gasoline aviation engine on an enhanced combustion vapor wherein said vapor is combusted in an aviation gasoline engine; and is derived from an ECS compound representing 0.01% to 15.0% oxygen by weight of a fuel, an organo manganese representing about 0.001 to 3.0 gr Mn/gal of fuel, and an ASTM or other aviation co-fuel having a minimum heat of combustion of 18,720 BTU/lb; whereby said combined fuel has heat of combustion lower than 18,720 BTU/lb due to dilution effect of DMC; said method characterized in that aviation engine combusting lower heat of combustion vapor has increased flight range compared to higher heat of combustion vapors from co-fuel alone (preferably greater than 2.0%).
  • Example 162 An unleaded aviation fuel composition meeting ASTM standards comprising 2.0% oxygen by weight in form of an ECS compound (preferably DMC) , a combustion enhancing amount of a metallic (preferably manganese in a -180- concentration of 1/4 to 5/8 gr/gal) , and a minimum heat of combustion of 18,720 BTU/lb; whereby the incremental lost heat of combustion of the composition due to addition of ECS compound is less 1500, 1000, 750, 500, 300 BTU/gal or 250, 160, 120, 80, or 50 btu/lb.
  • ECS compound preferably DMC
  • a combustion enhancing amount of a metallic preferably manganese in a -180- concentration of 1/4 to 5/8 gr/gal
  • a minimum heat of combustion of 18,720 BTU/lb whereby the incremental lost heat of combustion of the composition due to addition of ECS compound is less 1500, 1000, 750, 500, 300 BTU/gal or 250, 160, 120, 80, or 50 btu/lb.
  • a liquid aviation gasoline fuel comprising DMC at 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5%, or more, oxygen by weight in the fuel and at least one manganese metallic representing 0.001 to 1.5 gr/gal, and an aviation co-fuel base; wherein combined fuel is characterised as having a minimum knock octane number of 80, 100, 100, and minimum performance number of 87, 130, 130, a max T10 distillation temperature of 75°C, a minimum T40 temperture of 75°C, a maximum T50 temperature of 105°C, a maximum T90 temperature of 135°C, a maximum end temperature of 135°C, where the sum of the T10 and T50 temperatures is a minimum of 135°C, a maximum sulfur content of 0.05 wt%, a minimum net heat of combustion of 18,720 BTU/lb, a latent heat of vaporization exceeding 120, 130, 140, 150, 155, or 160 BTU/l
  • Example 164 The example of 162, wherein fuel originally meets ASTM D 910 heat of combustion standards; and wherein 2.0% oxygen by weight in form of DMC is added, together with manganese in a concentration from about 1/4 to 5/8 gr/gal; said -181- resultant composition is not adjusted for loss of heat due to addition of DMC; operating said aviation engine on lower heat of combustion fuel, whereby flight range is increased by at least 2.0% greater over original ASTM clear aviation co-fuel.
  • An ASTM aviation gasoline comprising a hydrocarbon base, a minimum octane or performance number of 87 or 130 (ASTM 909) , a distillation fraction wherein the sum of the T-10 plus T-50 fractions are 307°F, the T-40 temperature is 167° F and the T-90 temperature is less than 250°F, with the fuel sulfur content a maximum of 0.05 wt% (preferably less) , and a combustion improving amount of an ECS compound; whereby the resultant fuel's latent heat of vaporization exceeds 120, 125, 130, 135, 140, 142, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 152, 153, 154, 155, 156, 157, 158, 159, 160, 162, 165 BTU/lb; and whereby resultant fuel optionally has a laminar burning velocity equal to or exceeding 40, 42, 43, 44, 45, 46, 47, 48, 49, 50
  • the aviation gasoline composition is unleaded and comprises a blend of hydrocarbons, a combustion improving amount of CMT ranging from 0.001 to 3.00 gr. Mn/gal, more preferably 0.001 to 2.0 gr. Mn/gal, 0.001 to 0.1 gr.
  • a combustion improving amount of DMC ranging from 0.01% to 20.0% 02 by weight (1.5% to 5.0% preferred, 1.5% to 2.5% more preferred) , whereby the octane rating number as determined by ASTM D 2700 is at least 100, with the balance of the fuel's specifications strictly conforming to strict ASTM standards; and whereby the fuel's LHV exceeds 145, 144, 145, 146, 147, 148, 149, 150, 152, 153, 154 BTU/lb.
  • the unleaded composition of 165 wherein CMT is greater than 1/16, 1/8/, 1/4, 1/2, or 5/8 gram Mn/gal, and the combustion improving amount of DMC is greater than 1.0% 02 by weight, preferably greater than 1.5%, and the minimum net heat of combustion of composition is approximately 18,500 BTU/lb, 18,720, 18,800 BTU/lb., or more preferably greater than 19,000 BTU/lb, and flight range is increased over clear fuel alone.
  • the unleaded composition of 165 wherein CMT is greater than 1/16, 1/8/, 1/4, 1/2, or 5/8 gram Mn/gal, and the combustion improving amount of DMC is greater than 1.0% 02 by weight, preferably greater than 1.5%, and the net heat of combustion is approximately 16,500 to 18,500 BTU/lb, wherein flight range is increased at least 5% over the clear fuel.
  • CMT is greater than 1/16, 1/8/, 1/4, 1/2, or 5/8 gram Mn/gal
  • the combustion improving amount of DMC is greater than 1.0% 02 by weight, preferably greater than 1.5%
  • the net heat of combustion is approximately 16,500 to 18,500 BTU/lb, wherein flight range is increased at least 5% over the clear fuel.
  • a method of operating a aviation gasoline power aircraft said method characterized: by mixing a fuel of example 165, supplying said fuel to an injection or vaporization system, wherein said fuel is injected into an engine manifold or combustion chamber, wherein average fuel droplet particles is less than 80, 70, 60, 50 microns; whereby combustion of said fuel results in an increase in power, thermal or combustion efficiency greater than clear fuel preferably 2.0% or more.
  • Example 171 The example of 169-170, wherein the fuel additionally has an end boiling temperature of less that 300°F, (or alternatively a T-90 temperature less than 250°F) , and an average latent heat of vaporization increased over base fuel by at least 2.0%, preferably 5.0%, or more.
  • 169-170 wherein the fuel is combusted in a spark ignited internal combustion engine, equipped with fuel injection or manifold, and/or other means, wherein fuel particles averaging 70, 60 microns, or less, are communicated/injected into the combustion chamber; and wherein said combustion is occurring at an altitude of at 5,000 to 10,000 feet above sea level, or more; and wherein combustion efficiency is increased by at least 5.0%.
  • an aviation gasoline meeting ASTM D 910 specifications a spark ignited aviation gasoline engine, wherein said combination is characterized in that: said fuel contains a combustion improving amount of dimethyl carbonate up to 5.0% oxygen wt/gal, and a least one CMT compound in a concentration from about 0.001 grams TABLE 10
  • test methods indicated are the approved referee methods. Other acceptable methods are indicated in Section 2 and 5.1.
  • c The amount of water by distillation by Test Method D 95 plus the sediment by extraction by Test Method D 473 shall not exceed the value shown in the tab For Grade No. 6 fuel oil, the amount of sediment by extraction shall not exceed 0.50 mass %, and a deduction in quantity shall be made for all water and sedime in excess of 1.0 mass %.
  • Grade No. 6 fuel oil will be classified as Low Pour (+ 15°C max) or High Pour (no max). Low Pour fuel oil should be us unless tanks and lines are heated.
  • T-10 or T-50 reductions nor T-90 reduction (except for No. 2 fuels) so long as the fuel is easily vaporized and operates efficiently, particularly in vaporizing type burners.
  • a minimum T-90 temperature limitation for Grade No. 2 heating oil is intended to maintain compatibility with atomizing type household heating burner applications. Otherwise, distillation limits are not specified for fuel oils of Grade Nos. 4, 5, and 6, and T-90 temperatures may be reduced to the extent practical, in order to improve combustion and/or reduce pollutants.
  • a No. 2 fuel oil with a kinetic velocity of no less than 1.9 nor greater than 3.4 (mm 2 /s) measured at 40°C, a minimum T-90 temperature of 282°C, a max T-90 temperature of 338°C, a maximum sulfur content of 0.05% mass, a maximum copper strip rating of No.3, a combustion improving amount of an ECS compound (preferably DMC) ; and optional metallic, flash point of 38°C, LHV of at least 90, 95, 100, 105, 110, 115, 120, 125, 130, 135 BTU/lb; said fuel optionally containing co-solvent and/or metallic salt.
  • ECS compound preferably DMC
  • Example 177 A No. 6 fuel oil, with a kinetic velocity of no less than 15.0 nor greater than 50.0 (mm 3 /s) measured at 100°C using ASTM D 445, and combustion improving amount of an ECS compound, optionally a metallic. -185- to about 1.00 grs Mn/per gallon, wherein said fuel comports to ASTM requirements; and whereby improved engine thermal efficiency is 2.0%, or more.
  • the invention contemplates the use of a wide spectrum of fuel oils, as co-fuels, including burner fuels, fuel oils, furnace oils, petroleum and petroleum oils, and those fuel oils meeting ASTM D 396 standards, and/or fuel intended for use in various types of fuel-oil-burning equipment, under various climatic and operating conditions.
  • fuel oils as co-fuels, including burner fuels, fuel oils, furnace oils, petroleum and petroleum oils, and those fuel oils meeting ASTM D 396 standards, and/or fuel intended for use in various types of fuel-oil-burning equipment, under various climatic and operating conditions.
  • Non-limiting examples include ASTM Grades 1 through 5, which are found at TABLE 10.
  • T-90 temperatures herein be reduced to maximum extend practical, but not below minimum required specification temperatures.
  • T-90 temperatures may be reduced 20° C below max ASTM specification temperatures. Reductions of 50° C are also preferred so long as, as in the case of Grade No. 2 fuel oils, T-90 is not reduced below 282° C.
  • ASTM grade fuel oil containing a combustion improving amount of dimethyl carbonate and a combustion improving metallic, wherein expected combustion efficiency of the furnace increases in range of at least 1.0% to 20%.
  • a method for enhanced combustion of a vapor for heavy diesel,locomotive or marine engine wherein vapor is derived from DMC representing 0.01% to 40% oxygen by wt in the fuel, a metallic representing 0.01 to 20.0 grs of metal/gal, and a heavy diesel, locomotive or marine engine co-fuel meeting ISO DIS 8217 and/or BS MA 100 standards specifications; wherein said combination contains a sulfur -189- concentration of 0.01 to 3.0% mass, has a viscosity of 10 to 500 centistokes at 50°C; whereby combustion of said vapors results in reduced corrosion, particulate emissions and/or improved fuel consumption compared to co-fuel alone.
  • the fuel composition of example 180 additionally contains an ashless dispersant, which may be selected from an alkenyl succinic acid esters, alkenyl succinimide of an amine, methylamine, 2-ethylhexylamine, n-dodecylamine, and the like (see U.S. Patents 3,172,892; 3,202,678, 3,219,666, 4,234,435) and/or a combustion chamber deposition control additive.
  • an alkenyl succinic acid esters alkenyl succinimide of an amine, methylamine, 2-ethylhexylamine, n-dodecylamine, and the like (see U.S. Patents 3,172,892; 3,202,678, 3,219,666, 4,234,435) and/or a combustion chamber deposition control additive.
  • a method of improving thermal efficiency in the operation of a locomotive or marine engine comprising: injecting an ECS based heavy fuel composition into a combustion chamber, wherein combustion occurs at an accelerated, more efficient rate, and combustion temperatures are reduced; whereby thermal efficiency increased by at least 5%.
  • additive practice is a vital component of this invention. It is expressly contemplated that additives, additive methods, lubricants, and the like, set forth above in the various co-fuel applications be interchangible between co-fuels and neat fuel applications.
  • Appliant's invention contemplates a wide range of additives and concentrations, including but not limited to the following (with approximate additive concentration) : anti-oxidant(s) (8-40 mg/kg), wax anti-setting (100-200 mg/kg) , anti-foam (2-5 mg/kg) , anti-valve seat recession (100-200 mg/kg) , pipe-line drag reducing agents (2-20 mg/kg) , diesel detergents (10-300 mg/kg) , demulsifiers (3- 12 mg/kg) , diesel flow improvers (50-1000 mg/kg) , deposit control additives (50-3000 mg/kg) , lubricity improvers (25- -191- 1000 mg/kg) , anti-static (2-20 mg/kg) , stabilizers (50- 200 mg/kg), anti-icing agents (0.1-2.0% vol), corrosion inhibitor (4-50 mg/kg) ,
  • contemplated additives include combustion improvers, biocides, drag reducing agents, dehazers, metallic scavengers, friction modifiers, antiwear additives, antisludge additive.
  • Applicant's anti-static additives include soluble chromium materials, polymeric sulfur, nitrogen compounds, and quaternary ammonium materials. Use is generally contemplated in very cold ambient temperatures and/or in fuels of intermediate volatility such as aviation kerosenes.
  • Non-limiting examples of metal deactivators include N,N'-disalicylidene -1, 2 - propanediamine, and its basic mechanism is to chelate dissolved copper, mitigating surface formation of metallic salts/deposits, etc.
  • Non- limiting examples of drag reducing agents include high molecular weight (1,000,000) polyisobutenes and polyalphaolefins.
  • Non-limiting examples of dyes include azo compounds and/or anthraquinone.
  • Non-limiting examples of demulsifiers include complex non-ionic surfactants, alkoxylated polyglycols and aryl sulfonates, and mixture (typically at treat rates in the range of 10-20% of that of the detergent, if any) .
  • Non-limiting examples of corrosion -192- inhibitors include carboxylic acid, amines, and/or amine salts of carboxylic acids are used.
  • Mobile Chemical Corp. markets "Mobiladd F-800" a combination lubricity agent and corrosion inhibitor.
  • Non-limiting examples of anti-oxidants include hindered phenols, phenylenedimines, aromatic diamines, or mixtures of aromatic diamines and alkyl phenols, .
  • Disperants could be ashless succinimides or polymeric methyacrylates,
  • Non-limiting examples of anti-icing additives include isopropyl alcohol, hexylene glycol, dipropylene glycol, glycols, formamides, imidazolines and carboxylic acids.
  • Non-limiting examples of valve seat recession additives include sodium or potassium long chain alkenyl sulfonates, sodium or potassium long chain naphthenates, or microdispersions of sodium or potassium salts in oil.
  • Applicant's invention contemplates carburetor, port fuel injector and intake valve deposit control additives.
  • Non-limiting examples include amides, amines, amine carboxylates, alkenyl succinimdes, polybutene succinimides, polyalkenyl succini ide (Ethyl Petroleum Additives, Inc., HITEC 4450) , polyether amines, polyether amide amines, ployalkenyl amines, polyether amines (Oronite Chemical Co. OGA-480) , polyisobutenyl amine (Oronite Chemical Co. OGA- 472) , polybuteneanines, polyetheramines, and polyolefin amines, with or without carrier fluid.
  • Such materials may be incorporated at treat concentrations of 50 to 500 pounds per thousand barrels, and more usally in the range of 100 to 200 lbs per thousand barrels.
  • Other examples include -193- Additional detergent/dispersants, include high molecular weight polyisobutylene substituted amine derivative TFA-4681, fuel soluble salts, amides, imides, oxazolines and esters of long aliphatic hydrocarbon- substituted dicarboxylic acids or their anhydrides, long chain aliphatic hydrocarbons having a polyamine attached directly thereto, a Mannich condensation product(s) formed by condensing a long chain aliphatic hydrocarbon- substituted phenol with an aldehyde, preferably formaldehyde, or similar additive is contemplated in the practice of keeping fuel injectors and valve intakes clean.
  • combustion chamber deposit additives except where deleterious to enhanced combustion feature of invention, especially those that reduce existing combustion chamber deposits. It is contemplated that certain deposit additives, which control injector and valve intake deposits, may be deleterious to combustion chamber deposition control or reduction and are therefore not as desireable.
  • Smoke suppressants including organic compounds of barium, particularly the barium carbonate overbased barium sulfonates, N-sulfinyl anilines, are contemplated, as well as others.
  • Additional deposit control additives include, a polyether amine sold by Oronite Chemical as OGA-480, a polyalkenyl succinimide sold by Ethyl Corp as HITEC 4450, -194- a polyisobutenyl amine sold by Oronite Chemical as OGA-472, and the like.
  • Example diesel fuel additives are shown by class and function in Table 4. As with any system in which a variety of additives may be used, care should be taken to avoid incompatibilities among additives and unanticipated interactions which may produce undesirable fuel effects.
  • the fuel will contain other deposit control additives, non-limiting examples include polyether amine, polyalkenyl succinimide, or polyalkenyl succinimide, hydrocarbyl carbonates, such as polybutene alcohol, polybutene chloroformate, polybutene amines formulated in mineral or other carriers, polyisobutylene amine reformulated in polyether carriers, and one-component polyether amines, and the like.
  • polyether amine polyalkenyl succinimide
  • hydrocarbyl carbonates such as polybutene alcohol, polybutene chloroformate, polybutene amines formulated in mineral or other carriers, polyisobutylene amine reformulated in polyether carriers, and one-component polyether amines, and the like.
  • Applicant's invention contemplates that acceptable deposit control additives will meet industry and regulatory standards, including CARB's 10,000 mile BMW IVD and Chrysler PFI keep clean tests. Thus, contempated average deposits on all valves cannot exceed 100 milligrams on said BMW test, nor no more than 5% plugging, as measured in flow loss, in any one injector. It is an express embodiment to avoid employing IVD additives or PFI additives, which show any detrimental performance in combustion chamber deposit control or reduction. -195- Applicant's invention expressly incorporates a combustion chamber deposit control additive. It is an express object of instant invention to employ deposit additives beyond IVD and PFI additives, namely to employ additives additionally or in lieu of IVD/PFI a combustion control deposit (CCD) additive.
  • CCD combustion control deposit
  • combustion chamber additives are not necessarily novel and have been used to maintain fuel system cleanliness for some time. In the practice of
  • CCD additive is optional.
  • combustion chamber deposition control/deposit modifier additive or additive packages especially those absent carrier fluid, and which have the effect of reducing octane number increase (ORI) of engines with combustion chamber deposits and/or which reduce and/or are capable of changing the characteristic of combustion chamber deposits.
  • ORI reducing octane number increase
  • Applicant's preferred combustion chamber deposit control additives exclude lower molecular weight -196- surfactants and high molecular weight polymeric dispersants based upon polybutene. Applicant expressly contemplates employing new classes of additives which control or reduce combustion chamber deposits, and which in the case of gasoline reduce octane requirement increases (ORI) , particularly those additives which can reduce existing deposits and/or reduce the ORI below clear base fuel absent said additive, over time.
  • ORI octane requirement increases
  • Non-limiting examples of desireable CCD additives include Shell's VEKTRON ORIC additives (Octane Requirement Increase Control) or ORR additives (Octane Requirement Reduction) and/or similar additive package, or Oronite's CCD (Combustion Chamber Deposit) additive package, Texaco's CleanSystem 3 or Ethyl's equivalent HiTec additive package. It is expected other combustion control additives and packages will be developed. Additive concentration levels may range from moderate to very high, depending upon the efficacy of the additive/additive package and co-fuel employed. Other means of controlling combustion chamber deposits include intermittent high concentrations of polyeramines. glycol boarates and ethylene dichloride may be employed.
  • Applicant's combustion chamber deposit control additives PFI (Port Fuel Injector) and IVD (Intake Valve Deposit) additives, and concentrations thereof, be effective in controlling and preferably reducing existant combustion chamber deposits. It is also preferred that said deposit control additives be in amounts able to enhance the presence of Applicant's ECS compounds and/or metallics, which may be concentrations above or below those recommended. It is an express embodiment of this invention that a clean combustion additive package be incorporated into any co-fuel and/or ESC fuel composition.
  • said combustion additive package incorporate at least one organo manganese compound (preferably MMT) and/or other combustion improving metallic compound (or mixture thereof) , and a combustion chamber deposit control/reducing additive (e.g. Shell's VEKTRON ORIC Octane Requirement Increase Control or ORR additive, Oronite's CCD additive package, Texaco's CleanSystem 3 , or Ethyl's equivalent HiTec additive package).
  • organo manganese compound preferably MMT
  • other combustion improving metallic compound or mixture thereof
  • a combustion chamber deposit control/reducing additive e.g. Shell's VEKTRON ORIC Octane Requirement Increase Control or ORR additive, Oronite's CCD additive package, Texaco's CleanSystem 3 , or Ethyl's equivalent HiTec additive package.
  • this clean combustion additive package may optionally contain one or more injector and/or intake valve deposit additive(s) .
  • Concentrations of each compound or the performance features of individual additives and/or additive package, as an entirety, should meet minimum standards set by industry or requirements established by legal or regulatory standard. It is contemplated that concentrations may -198- include those that exceed or be less than those recommended by the additive manufacture.
  • Example 185 A composition comprised of a minor amount of at least one metallic, including, for example a cyclopentadienyl manganese tricarbonyl compound, and a major amount of a combustion chamber deposit control additive or additive package, such as Texeco's CleanSystem 3 additive.
  • a combustion chamber deposit control additive or additive package such as Texeco's CleanSystem 3 additive.
  • combustion chamber deposit control additive includes, or additionally includes, at least one ECS compound, preferably DMC.
  • composition of examples 185 additionally comprising an injector and/or induction valve deposit control additive; wherein said additives are same or differing additives.
  • a composition comprising at least one cyclopentadienyl manganese tricarbonyl and/or other combustion improving metallic compound, a combustion chamber deposit reducing additive, and optionally, an injector and/or induction valve deposit control additive; wherein said additives are same or differing additives.
  • Example 189 A method incorporating the fuel compositions of Examples 185-189, where said additive package is employed deposit reducing quantities in a fuel for combustion in an internal combustion engine; wherein said compression ratio is increased to a compression ratio beyond average conventional compression ratios, or compression ratio's equal to greater than 8.6:1, 8.7:1, 8.8:1, 8.9:1, 9.0:1, 9.1:1, 9.2:1, 9.3:1, 9.4:1, 9.5:1, 9.6:1, 9.7:1, 9.8:1, 9.9:1, 10.0:1, 10.2:1, or greater.
  • composition of 190 wherein the manganese concentration is equal to an amount such that the treatment level of the additive package equals at least the minimum metallic concentrations for the fuels set forth herein.
  • composition of 190 wherein deposit control additives are in an amount such that after treatment of a fuel, combustion chamber, injector, and/or intake valve deposits are controlled, modified, or reduced, and/or wherein treated fuel meets regulatory or minimal legal standards.
  • Applicant contemplated additive packages will incorporate IVD, PFI and ORI (or CCD) control additives, additive packages and/or mixture thereof.
  • a fuel composition comprising an ECS fuel (comprising an ECS compound, preferably DMC, and at least one combustion improving metallic, preferably MMT) ; a co-fuel; an injector deposit control additive; an intake valve deposit control additive; and a combustion chamber deposit control additive; wherein said deposit control additive may be same or multiply compound, and/or wherein said compound or compounds change/reduce existing combustion chamber deposits while preferably enhancing combustion efficiency (but not required) .
  • additives, including deposit control additives operate to enhance the ECS and metallic combustion chemistry, which represents the predominate thermodynamic and combustion object of Applicant's invention, as opposed to merely enhancing the fuel and combustion characteristics of Applicant's co-fuels.
  • combustion chamber deposits are substantially controlled when employed in combination with a co-fuel, absent need for additional additive.
  • ECS metallic fuels as a percentage of total fuel, when in combination with co- fuels, reduces combustion chamber deposition.
  • neat ECS fuels may include injector, valve intake and/or combustion chamber deposit additive(s). Lubricity, antioxidant, corrosion, and other known additive are contemplated.
  • Non-limiting examples of wax crystal modifiers (wax anti-settling agents) or middle distillate flow improvers include ashless low molecular weight co-polymers and include ethylene vinyl acetate co- polymers.
  • Cold flow improvers are contemplated with diesel fuels, particularly those with reduced sulphur and/or reduced aromatic concentrations, especially as fuel temperatures drop. Betz Process Chemicals markets a superior cold flow improver additive. In the practice of -202- this invention cold flow improvers are expressly contemplated.
  • Non-limiting examples of antifoam agents include polysilicone based compounds.
  • Non-limiting examples of detergents include succinimide, ashless polymeric disperants.
  • Non-limiting examples of cetane improvers include alkyl nitrates of which 2 ethyl hexyl nitrate is desireable with concentrations of 0.01, 10, 25, 50, 75, 100, 150, 200, 250, 500, 750, 800, 900, 1000, 1100, 1200, 1250, 1300, 1400, 1500, 1600, 1750, 1900, 2000 ppm or greater concentrations acceptable.
  • Other concentrations include up to approximately 0.35, 0.40, 0.45, 0.55, 0.60, 0.65, 0.70, 0.75, 0.80, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5 % vol., or more, of the fuel.
  • cetane improvers include Arco's peroxide-based dialkyl peroxide improver, which may be included in the fuel composition up to approximately 0.3, 0.4, 0.5, 0.6,
  • Multifunctional additive packages are also contemplated. Such packages may contain detergents, cetane/octane improvers, combustion chamber deposit control additives, fuel stabilizers, flow improvers, anti-foam agents, reodorants, demulifier, -203- corrosion inhibitors, lubricity additives, and/or solvents for package stability.
  • Lubricity additives are particularly comtemplated in low/no sulfur diesel/distillate fuels, inorder to avoid equipment, elastomer, and other failure.
  • a method of operating an engine at combustion temperatures at least 50°F below same fuel absent ECS compound, metallic, and PFI deposit control additive wherein said reduced temperature operation after said operation, results in a reduced temperature transfer to fuel remaining in or near the pintle tips of port fuel injector subject to otherwise high soak temperature transfer; wherein the formation of free radicals capable of combination in auto-oxidation, chemical rearrangement and/or degradation of remaining fuel are reduced; and/or wherein sticky deposits and/or degraded fuel acting as deposit precurors are reduced; wherein Port Fuel Injector deposits are controlled and/or flow restriction is less than 10.0%, 9.0%, 8.0%, 7.0%, 6.0%, 5.0%.
  • Example 194 wherein the additive optionally contains an intake deposit control additive and/or combustion chamber deposit control additive, wherein said additive or additives are employed in a composition containing a diesel co-fuel, together with balance of combustion and temperature reducing amount of ECS compound(s) and metallic(s) , wherein said operation of engine results in reduction of NOx and/or particulate emissions, when compared to said deposit control additive(s) employed in clear diesel co-fuel alone (absent ECS compound and metallic) .
  • an intake deposit control additive and/or combustion chamber deposit control additive wherein said additive or additives are employed in a composition containing a diesel co-fuel, together with balance of combustion and temperature reducing amount of ECS compound(s) and metallic(s) , wherein said operation of engine results in reduction of NOx and/or particulate emissions, when compared to said deposit control additive(s) employed in clear diesel co-fuel alone (absent ECS compound and metallic) .
  • Applicant notes the enhanced combustion burning and temperature reducing properties of instant invention unexpectedly enhance the operating performance features of such PFI, IVD, CCD additive and additive packages.
  • a method of employing a CCD, IVD or PFI additive in an internal combustion chamber comprising simultaneous injection of an atomized vapor comprising a minor amount of at least one high burning velocity (and/or low combustion temperature causing) ECS compound, at least -205- one high energy releasing metallic compound, and a CCD, IVD, or PFI compound, and mixture, and a low sulfur reformulated or conventional co-fuel; combusting said vapor in said combustion chamber, wherein high kenetic energy metallic vapor phase combustion occurs; whereby existing combustion chamber deposits are modified or reduced and/or intake valve deposition is similarly avoided over time, as compared to employing said deposit control additive(s), absent said ECS compound and metallic. It is further contemplated that the additive packages of instant invention will be formulated to avoid intake valve sticking and crankcase oil contamination.
  • a method of avoiding CCD deposits employing an ECS/co- fuel combination comprising: mixing a co-fuel with combustion improving amount of a metallic and a ECS compound (preferably DMC) ; a combustion chamber deposit
  • CCD CCD control additive
  • a co-fuel combusting said fuel in an engine for the equivalent of 5,000, 10,000, 15,000, 20,000, 30,000, 50,000, 75,000, or 100,000 miles, or more; wherein the octane requirement for engine operating on ECS/co-fuel combination does not exceed, or is less, than -206- the octane requirement of same engine operating on clear co-fuel alone (but containing same CCD additive) .
  • Example 197 wherein the octane requirement as measured in (R+M)/2 of said fuel is at least 0.5, 1, 1.5, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 or more numbers less than clear co-fuel alone (2 number or greater preferred) .

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