CN112004917A - High power and economical friendly fuel composition - Google Patents

High power and economical friendly fuel composition Download PDF

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Publication number
CN112004917A
CN112004917A CN201980025836.8A CN201980025836A CN112004917A CN 112004917 A CN112004917 A CN 112004917A CN 201980025836 A CN201980025836 A CN 201980025836A CN 112004917 A CN112004917 A CN 112004917A
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China
Prior art keywords
weight
composition
composition according
engine
fuel
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CN201980025836.8A
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Chinese (zh)
Inventor
R.多芬
J.欧比奥斯
T.杜波伊斯
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TotalEnergies Marketing Services SA
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Total Marketing Services SA
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Publication of CN112004917A publication Critical patent/CN112004917A/en
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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
    • C10L10/10—Use of additives to fuels or fires for particular purposes for improving the octane number
    • 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
    • C10L1/04—Liquid carbonaceous fuels essentially based on blends of hydrocarbons
    • C10L1/06—Liquid carbonaceous fuels essentially based on blends of hydrocarbons for spark ignition
    • 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
    • C10L2200/00—Components of fuel compositions
    • C10L2200/04—Organic compounds
    • C10L2200/0407—Specifically defined hydrocarbon fractions as obtained from, e.g. a distillation column
    • C10L2200/0415—Light distillates, e.g. LPG, naphtha
    • 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
    • C10L2200/00—Components of fuel compositions
    • C10L2200/04—Organic compounds
    • C10L2200/0407—Specifically defined hydrocarbon fractions as obtained from, e.g. a distillation column
    • C10L2200/0415—Light distillates, e.g. LPG, naphtha
    • C10L2200/0423—Gasoline
    • 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
    • C10L2230/00—Function and purpose of a components of a fuel or the composition as a whole
    • C10L2230/22—Function and purpose of a components of a fuel or the composition as a whole for improving fuel economy or fuel efficiency
    • 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
    • C10L2270/00—Specifically adapted fuels
    • C10L2270/02—Specifically adapted fuels for internal combustion engines
    • C10L2270/023—Specifically adapted fuels for internal combustion engines for gasoline engines
    • 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
    • C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/24—Mixing, stirring of fuel components

Abstract

The present invention relates to a fuel composition comprising: -from 35% to 75% by weight of cyclopentane, -from 10% to 25% by weight of one or more aromatic hydrocarbons, and-up to 55% by weight of one or more branched alkanes selected from 2-methylbutane and trimethylpentanes, wherein the weight ratio of cyclopentane content to aromatic hydrocarbon content is greater than or equal to 2. The invention also relates to the use of such a composition for supplying spark ignition engines, in particular for increasing the engine power and/or for reducing the specific fuel consumption of said engines and/or for increasing the octane number (RON).

Description

High power and economical friendly fuel composition
Technical Field
The present invention relates to fuel compositions intended for vehicles comprising spark ignition engines (also known as gasoline engines) having an increased level of performance both in engine power and in energy saving.
The invention further relates to the use of such a composition in a spark ignition engine for increasing power and/or reducing specific fuel consumption.
Background
Gasoline-type fuels that can be used in spark-ignition engines, particularly those of motor vehicles, must have a sufficiently high octane number to avoid knock problems.
It is well known that octane number measures the resistance of the fuel used in spark ignition engines to spontaneous combustion.
Typically, gasoline fuels sold in europe that meet standard EN 228 have a Motor Octane Number (MON) greater than 85 and a Research Octane Number (RON) of at least 95. These fuels are suitable for the vast majority of motor vehicle engines.
To improve its efficiency, modern spark ignition engines tend to operate with increasingly higher volumetric compression ratios, i.e., where a high compression ratio is applied to the fuel/air mixture prior to its ignition.
However, increasing the volumetric compression ratio in the engine increases the risk of detonation-type abnormal combustion resulting from localized auto-ignition of the air/fuel mixture upstream of the flame front. This phenomenon generates characteristic noise and can cause damage to the engine.
High volumetric compression ratios are particularly sought for very high power engines, such as the engines of racing vehicles.
It is therefore necessary to use this type of engine with a fuel that has high resistance to pre-ignition and detonation, and that has as high a Research Octane Number (RON) as possible. If the octane number is insufficient relative to the volumetric compression ratio applied to the engine, phenomena of fuel auto-ignition or knocking may occur, which may significantly reduce the performance level of the engine and cause significant damage thereto.
Moreover, for all vehicles and in particular those intended for common public use in general, fuel compositions having the so-called "fuel economy" property (also called "FE"), i.e. fuels which allow reducing the specific fuel consumption of the engine, are increasingly sought to obtain energy savings and a reduction in CO2And (5) discharging. However, this reduction in specific fuel consumption must not occur at the expense of engine power, which must be maintained or even increased.
Therefore, there is a need to develop new fuel compositions intended to supply spark-ignition engines, which meet the requirements of modern vehicles, whether intended for racing or other applications, in particular domestic applications.
Therefore, the following fuels for spark ignition internal combustion engines are required: it has a high octane number, and more particularly a high RON, and it maximizes the engine power of motor vehicles, particularly racing vehicles, operating with a high volumetric compression ratio.
It is therefore an object of the present invention to enhance the performance levels of gasoline fuel compositions, particularly fuel compositions intended for racing vehicles, but not limited thereto. The aim is to increase the power of a gasoline fuel composition during combustion in a spark-ignition engine, whether it be of the naturally aspirated or turbocharged type.
There is also a need for a fuel of the "fuel economy" type that reduces the specific fuel consumption of the engine without reducing its power.
It is well known in the art that octane improving additives (or octane boosters) are typically added to fuel compositions. Organometallic compounds, particularly those comprising iron, lead or manganese, are well known octane boosters.
Tetraethyl lead (TEL) has been widely used in this manner as a highly effective octane booster. However, in most parts of the world, TEL and other organometallic compounds, if available in fuel, can now be used in fuel only in very small amounts, as they can be toxic, cause damage to engines and are harmful to the environment.
Non-metallooctyl cetane boosters include oxygenates (e.g., ethers and alcohols) and aromatic amines. However, these additives also have various disadvantages. For example, in order to have a significant effect on the octane number of the fuel, N-methylaniline (NMA), an aromatic amine, must be used at a relatively high treat rate (1.5-2% by weight of additive/weight of base fuel). NMA may also be toxic. Oxygenates reduce the energy density in the fuel and, like NMA, they must be added at high treat rates, possibly causing compatibility problems with fuel storage, fuel lines, seals and other engine components.
For example, U.S. patent No. us-A-4812146 describes an unleaded gasoline fuel composition for racing engines comprising at least four components selected from butane, isopentane, toluene, MTBE (methyl tert-butyl ether), and alkylate.
International patent No. wo2010/014501 describes an unleaded gasoline fuel composition comprising: at least 45 volume% of a branched alkane; up to 34 volume percent of one or more mono-and di-alkylated benzenes; 5-6% by volume of at least one linear alkane having 3-5 carbon atoms (denoted as C3-C5); and one or more alkanols having 2 to 4 carbon atoms (designated C2-C4) in an amount sufficient to raise AKI (knock resistance index), i.e., (RON + MON)/2, to at least 93. These compositions are presented as having high torque output and maximum power.
Thus, fuel compositions having good inherent properties, i.e., fuel compositions that do not require the addition of octane boosters (such as those described previously), are sought.
Us patent No. us 2015/0259619 describes the following fuel compositions: it has a high octane number, in particular intended for aircraft engines, and it comprises from 1 to 60% by weight of at least one alicyclic alkane, up to 60% by weight of at least one linear or branched alkane, and up to 50% by weight of aromatic hydrocarbons.
Us patent No. us4,401,983 describes high octane fuels as follows: it is also basically intended for use in aircraft, comprising a major proportion of a trimethylpentane fraction having a boiling point ranging from 105 to 115 ℃ and a minor proportion of an aromatic hydrocarbon fraction.
International patent No. wo 00/47697 describes the following fuel compositions: it allows the engine to operate at lean limits, which results in fuel savings and reduced emissions; and at the same time meet the standard fuel specifications (in particular with respect to octane number). These compositions contain specific compounds, in particular selected from the following: an oxygenate, olefin, cycloalkane or aromatic compound of formula R1-O-R2.
Disclosure of Invention
Continuing their research into developing high performance fuel formulations, applicants have now discovered the following compositions: which meets the above objects and which has properties superior to those of the compositions of the prior art.
Accordingly, the present invention relates to a fuel composition comprising:
-from 35% to 75% by weight of cyclopentane,
from 10% to 25% by weight of one or more aromatic hydrocarbons, and
up to 55% by weight of one or more branched alkanes chosen from 2-methylbutane and trimethylpentanes,
wherein the weight ratio of the amount of cyclopentane to the amount of aromatic hydrocarbons is greater than or equal to 2.
These compositions are intended for use in supplying spark ignition engines (or gasoline engines).
The fuel composition according to the invention has a particularly high Research Octane Number (RON).
In applications where the fuel flow rate is capped, particularly in the case of racing cars (e.g., in the first order equation), the use of the composition according to the invention allows for higher engine power levels to be achieved for a constant fuel flow rate.
In particular, it has been found that the incorporation of these three types of compounds (cyclopentane, aromatic hydrocarbons and branched alkanes) into the compositions of the invention in specific ratios as defined hereinbefore achieves a synergistic level of performance with respect to RON and engine power.
The fuel composition according to the invention also has an excellent Net Calorific Value (NCV). It is well known that the NCV of a gasoline composition can be measured according to the method described in the standard ASTM D240, or calculated from the chromatographic fingerprint of said composition.
The aforementioned properties are particularly sought for use in racing vehicles.
The composition according to the invention also has significant advantages for uses other than in racing, such as so-called general public use, since it allows to reduce the specific fuel consumption of the engine. Again, the composition according to the invention achieves a synergistic result with respect to reducing the fuel consumption of said engine. Thus, the composition according to the present invention has excellent fuel economy properties. It also reduces CO compared to conventional gasoline compositions2And (5) discharging.
The invention further relates to the use of a composition according to the invention for supplying a spark-ignition engine.
According to one embodiment, the composition according to the invention is used as a fuel for supplying high power and high efficiency spark ignition engines, preferably engines for racing vehicles.
Other objects, features, aspects and advantages of the present invention will become more apparent after reading the following description and examples.
In the description that follows, and unless otherwise indicated, the limits of a range are included in the range, in particular in the expression: "comprised between … … and … …", "located within the range … … to … …", and "ranging from … … to … …".
Furthermore, the expressions "at least one" and "at least" used in the present specification are equivalent to the expressions "one or more" and "greater than or equal to", respectively.
Finally, as is well known, the term CNThe compound means a compound having N carbon atoms in its chemical structure.
Detailed Description
Fuel composition
As previously indicated, the composition according to the invention contains cyclopentane in an amount ranging from 35% to 75% by weight relative to the total weight of the composition.
Preferably, the amount of cyclopentane ranges from 36 to 62% by weight relative to the total weight of the composition.
The composition according to the invention further contains one or more aromatic hydrocarbons in an amount ranging from 10 to 25% by weight relative to the total weight of the composition.
Preferably, the amount of aromatic hydrocarbon ranges from 13 to 24% by weight relative to the total weight of the composition.
The aromatic hydrocarbon is advantageously monocyclic. They are preferably selected from C containing a benzene ring7-C10A hydrocarbon.
According to a preferred embodiment, the one or more aromatic hydrocarbons are chosen from those comprising, on the benzene ring: a single substituent; or two substituents in meta or para positions; or three substituents in meta position.
More preferably, the aromatic hydrocarbon or hydrocarbons are chosen from toluene, ethylbenzene, xylenes (and in particular 1, 2-or ortho-xylene, 1, 3-or meta-and 1, 4-dimethylbenzene or para-xylene, preferably meta-and para-xylene), 1-ethyl-3-methylbenzene, podophylls (1,3, 5-trimethylbenzene), 1-ethyl-3, 5-dimethylbenzene, and mixtures of these compounds.
Toluene, xylene and mixtures of these compounds are particularly preferred.
Moreover, the composition according to the invention has a weight ratio of its amount of cyclopentane to its amount of aromatic hydrocarbons greater than or equal to 2. Preferably, the weight ratio lies in the range 2 to 7, more preferably in the range 2 to 6.5, and even more preferably in the range 2.5 to 4.
According to a particularly preferred embodiment, the weight ratio lies in the range 2.8 to 3.2 and more preferably in the range 3 to 3.2.
Finally, the composition according to the invention contains one or more branched alkanes chosen from 2-methylbutane and trimethylpentanes in an amount of up to 55% by weight, preferably up to 50% by weight, relative to the total weight of the composition. Preferably, this amount lies in the range 15 to 50% by weight relative to the total weight of the composition.
Preferably, the one or more branched alkanes are selected from trimethylpentanes, and more preferably from 2,2, 4-trimethylpentane (or isooctane), 2,3, 3-trimethylpentane, 2,3, 4-trimethylpentane, and mixtures thereof.
2,2, 4-trimethylpentane (isooctane) is particularly preferred.
The composition as described in the preceding paragraph has a research octane number (RON value) greater than or equal to 95, preferably greater than or equal to 100, and more preferably greater than or equal to 101, measured according to the standard ASTM D2699-86.
The aforementioned values relate to the intrinsic octane number of the composition, i.e. without the addition of further compounds, in particular additives such as octane boosters, such as those described above.
In addition to the radicals described hereinbefore
The fuel composition according to the invention may further comprise one or more additives selected from those conventionally used in gasoline fuels.
In particular, the composition according to the invention may comprise at least one detergent additive ensuring the cleanliness of the air intake line. Such additives may for example be selected from succinimides, polyetheramines and quaternary ammonium salts, such as those described in patent documents US4171959 and WO 2006135881.
The composition may also comprise at least one lubricity additive or antiwear agent chosen in particular, but in a non-limiting manner, from fatty acids and ester or amide derivatives thereof, in particular glycerol monooleate, and derivatives of mono-and polycyclic carboxylic acids. Examples of such additives are given in the following patent documents: EP680506, EP860494, WO98/04656, EP915944, FR2772783 and FR 2772784.
Other additives may also be incorporated in the fuel composition according to the invention, such as additives to protect against valve seat recession (recesseon) and antioxidant additives.
Furthermore, for use in racing, the conductivity of the fuel is preferably greater than 200pS/m in order to ensure maximum safety when refuelling. For this purpose, at least one additive may be added to reduce the conductivity.
The additives described hereinbefore may be added to the fuel composition in an amount ranging from 10 to 1,000ppm by weight, preferably from 100 to 500ppm by weight for each thereof.
The fuel compositions according to the invention have a lead concentration generally less than or equal to 0.5g/L (for example in the form of tetraethyl lead) and are preferably lead-free, i.e. they do not contain lead or any lead-containing compounds.
The composition according to the invention can be prepared by simply mixing its ingredients.
One non-limiting example of a method of preparation comprises the steps of:
a) preparing a mixture a containing 75% by weight of cyclopentane and 25% by weight of one or more aromatic hydrocarbons as described hereinbefore; then the
b) One or more branched alkanes were added to mixture a to a maximum concentration of 55% by weight of the final mixture.
This example provides a composition according to the invention having a cyclopentane/aromatic hydrocarbon weight ratio of 3. Needless to say, the skilled person will know how to modify the process to prepare other compositions in the field of formulation of the present invention.
Use of
The invention further relates to the use of a composition as described in the foregoing for supplying a spark ignition engine. The engine may be of the direct injection type or of the indirect injection type.
According to a first embodiment, the composition according to the invention is used for increasing the power of said engine.
In this embodiment, the fuel composition may be advantageously used to supply high efficiency and high power spark ignition engines, preferably engines for racing vehicles. It may in particular be a naturally aspirated or turbocharged engine used in racing cars (racing or rally cars).
According to a second embodiment, the composition according to the invention is used to reduce the specific fuel consumption of said engine.
In this embodiment, the use according to the invention is of the "fuel economy" type, i.e. to reduce its specific fuel consumption.
The use also allows to reduce the emission of CO into the atmosphere2The amount of (c).
The invention further relates to the use of a composition as described hereinbefore for reducing the RON (also known as research octane number) of a gasoline fuel composition.
The following examples are intended only to illustrate the present invention and must not be construed as limiting the scope thereof.
Examples
Example 1: preparation of the composition according to the invention
Composition C according to the invention was prepared from the following starting compounds (compounds) a and B:
-A: a mixture of 75.5% by weight of cyclopentane and 24.5% by weight of aromatic hydrocarbons formed from a mixture of toluene and xylenes, having the composition detailed below:
composition of mixture A % by weight
Cyclopentane 75.5
Toluene 6.8
Para-xylene 6.3
Ortho-xylene 2.8
Meta-xylene 6.6
Ethylbenzene production 2
-B: isooctane (2,2, 4-trimethylpentane).
Composition C was obtained by simply mixing 50% by weight of A with 50% by weight of B. The final composition is as follows:
37.75% by weight of cyclopentane,
12.25% by weight of aromatic hydrocarbons,
-50% by weight of isooctane,
-cyclopentane quantity/aromatic hydrocarbon quantity weight ratio 3.1.
Example 2:properties of Fuel composition C
The following parameters were measured for the composition C of the invention and for each of the starting compounds (compounds) a and B:
octane RONAccording to the protocol described in the standard ASTM D2699-86:
-RON(A)＝102.7
-RON(B)＝100
-RON(C)＝104.9
it is clear that:
RON(C)>RON(A)，
RON (C) > RON (B), and
RON(C)>(RON(A)+RON(B))/2
specific power P, and specific fuel consumption SFC (the latter corresponding to the fuel required to produce a useful energy output of 1kW.h Mass):
for the three compositions, the composition has a cubic volume of 350cm3And arranged for direct fuel injectionThe measurements were performed under the same conditions at a constant fuel flow rate on the same single cylinder spark ignition engine.
Results obtained in terms of specific power:
-P(A)＝13.6kW
-P(B)＝12.9kW
-P(C)＝13.9kW
it is clear that:
P(C)>P(A)，
p (C) > P (B), and
P(C)>(P(A)+P(B))/2
results obtained in terms of specific fuel consumption:
-SFC(A)＝232.5g/kW.h
-SFC(B)＝247.9g/kW.h
-SFC(C)＝227.6g/kW.h
it is clear that:
SFC(C)<SFC(A)，
SFC (C) < SFC (B), and
SFC(C)<(SFC(A)+SFC(B))/2
these results show that, with respect to each of the starting components a and B, the composition C according to the invention achieves synergistic results with respect to both octane number RON and specific power and specific fuel consumption.
These improved performance levels are the result of: the particular combination of the claimed compounds in the specific ratios defined in this application, and the selection of higher weight ratios of the amount of cyclopentane to the amount of aromatic hydrocarbon.

Claims (15)

1. A fuel composition comprising
-from 35% to 75% by weight of cyclopentane,
from 10% to 25% by weight of one or more aromatic hydrocarbons, and
up to 55% by weight of one or more branched alkanes chosen from 2-methylbutane and trimethylpentanes,
wherein the weight ratio of the amount of cyclopentane to the amount of aromatic hydrocarbons is greater than or equal to 2.
2. Composition according to claim 1, characterized in that the amount of cyclopentane ranges from 36 to 62% by weight relative to the total weight of the composition.
3. Composition according to any one of the preceding claims, characterized in that the aromatic hydrocarbon or hydrocarbons are chosen from C's containing a benzene ring7-C10A hydrocarbon.
4. Composition according to the preceding claim, characterized in that the aromatic hydrocarbon or hydrocarbons are chosen from those comprising, on the benzene ring: a single substituent; or two substituents in meta or para positions; or three substituents in meta position.
5. Composition according to the preceding claim, characterized in that the aromatic hydrocarbon or hydrocarbons are chosen from toluene, ethylbenzene, xylenes (and in particular 1, 3-or meta-and 1, 4-or para-xylene), 1-ethyl-3-methylbenzene, husks (1,3, 5-trimethylbenzene), 1-ethyl-3, 5-dimethylbenzene, and mixtures of these compounds; and more preferably from toluene, xylene and mixtures of these compounds.
6. Composition according to any one of the preceding claims, characterized in that the amount of aromatic hydrocarbon ranges from 13 to 24% by weight relative to the total weight of the composition.
7. Composition according to any one of the preceding claims, characterized in that it has a weight ratio of its amount of cyclopentane to its amount of aromatic hydrocarbons lying in the range from 2 to 7, preferably in the range from 2 to 6.5, more preferably in the range from 2.5 to 4, even more preferably in the range from 2.8 to 3.2 and even more preferably in the range from 3 to 3.2.
8. Composition according to any one of the preceding claims, characterized in that the branched alkane(s) are chosen from trimethylpentanes, preferably from 2,2, 4-trimethylpentane (or isooctane), 2,3, 3-trimethylpentane, 2,3, 4-trimethylpentane and mixtures thereof.
9. Composition according to any one of the preceding claims, characterized in that the branched alkane contained therein is 2,2, 4-trimethylpentane (isooctane).
10. Composition according to any one of the preceding claims, characterized in that it contains said one or more branched alkanes in an amount of up to 50% by weight, and preferably in the range from 15 to 50% by weight, relative to the total weight of the composition.
11. Use of a composition as defined in any one of the preceding claims for increasing the RON of a gasoline fuel composition.
12. Use of a fuel composition as defined in any one of claims 1 to 10 for supplying a spark-ignition engine, and preferably a direct injection engine or an indirect injection engine.
13. Use according to claim 12 for increasing the power of the engine.
14. Use according to any one of claims 12 and 13 for reducing the specific fuel consumption of said engine.
15. Use according to any one of claims 12-14, wherein the engine is a high efficiency and high power spark ignition engine, preferably an engine of a racing vehicle.
CN201980025836.8A 2018-04-23 2019-04-19 High power and economical friendly fuel composition Pending CN112004917A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR1853534 2018-04-23
FR1853534A FR3080382B1 (en) 2018-04-23 2018-04-23 FUEL COMPOSITION WITH HIGH POWER AND FUEL ECO EFFECT
PCT/EP2019/060217 WO2019206829A1 (en) 2018-04-23 2019-04-19 High-power and eco-friendly fuel composition

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US (1) US20210040407A1 (en)
EP (1) EP3784760A1 (en)
JP (1) JP2021526562A (en)
CN (1) CN112004917A (en)
AU (1) AU2019260110A1 (en)
FR (1) FR3080382B1 (en)
WO (1) WO2019206829A1 (en)

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CN114806672A (en) * 2021-01-20 2022-07-29 本田技研工业株式会社 Method for preparing fuel for spark-ignition engine

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