CN1395611A

CN1395611A - Method of reducing vapour pressure of ethanol-containing motor fuels for spark ignition combustion engine

Info

Publication number: CN1395611A
Application number: CN01804050A
Authority: CN
Inventors: 安杰利卡·赫尔; 伊格·格鲁伯科夫
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-01-24
Filing date: 2001-01-24
Publication date: 2003-02-05
Anticipated expiration: 2021-01-24
Also published as: AU782062B2; JP2003520891A; ATE296342T1; KR20020082214A; BR0107817A; AU3684800A; IL150624A; HRP20020670B1; YU55802A; PT1252268E; ZA200205833B; PL194561B1; DK1252268T3; NO336184B1; BR0107817B1; EP1252268B1; CN1177914C; RS52075B; EE200200407A; IL150624A0

Abstract

The present invention discloses a method of reducing the vapour pressure of a C<3> to C<12> hydrocarbon-based motor fuel mixture containing 0.1 to 20 % by volume of ethanol for conventional spark ignition internal combustion engines, wherein, in addition to an ethanol component (b) and a C<3> to C<12> hydrocarbon component (a), an oxygen-containing additive (c) selected from at least one of the following types of compounds: alcohol other than ethanol, ketone, ether, ester, hydroxy ketone, ketone ester, and a heterocyclic containing oxygen, is used in the fuel mixture in an amount of at least 0.05 % by volume of the total fuel, is disclosed. A mixture of fuel grade ethanol (b) and oxygen-containing additive (c) usable in the method of the invention is also disclosed.

Description

Reduce the method that contains the ethanol engine vapour pressure that is used for spark-ignition type internal combustion engine

Technical field

The present invention relates to be used for the motor spirit of spark-ignition type internal combustion engine, more specifically, the present invention relates to by using oxygenated additive to reduce the method for the dry blowing vapour pressure equivalent (DVPE) that contains hydrocarbon liquids and alcoholic acid fuel composition.The DVPE that ethanol and being used to obtains fuel composition regulates component and preferably is derived from renewable raw material.By method of the present invention, can obtain to contain up to 20 volume % alcoholic acid motor spirits, this fuel satisfies the standard-required of the spark-ignition type internal combustion engine that uses gasoline work.

Background of invention

Gasoline is a kind of important fuel that is used for spark-ignition type internal combustion engine.The widespread use meeting of gasoline produces the pollution to environment.The burning that derives from the gasoline of crude oil or mineral gas can be disturbed the balance of carbonic acid gas in the atmosphere, and causes Greenhouse effect.Crude stockpile constantly reduces, and some country has faced the crude oil shortage.

To the ever-increasing concern of environment protection, the more and more severeer requirement and the crude oil shortage of unwanted component amount force industrial urgent need to develop the alternative fuel that burning is more cleaned in the discharging of control exhaust emission.

The vehicles of the use spark-ignition type internal combustion engine that the whole world is existing and machine still do not allow to eliminate fully at present the gasoline as motor spirit.

The task that manufacturing is used for the oil engine alternative fuel had existed for a long time already, had carried out many tests and had produced engine fuel component to use renewable resources.

The United States Patent (USP) 2 365 009 that nineteen forty-four authorizes has been described C _1-5Pure and mild C _3-5Hydrocarbon is in conjunction with being used as fuel.In the United States Patent (USP) 4 818 250 of authorizing in 1989, the author be intended to use from both citrus and other plant, obtain 1, the 8-terpadiene is as motor spirit, or as a kind of and gasoline blended component.In the United States Patent (USP) 5 607 486 of authorizing in 1997, the author discloses the new work engine fuel dope that contains terpenes, aliphatic hydrocrbon and lower alcohol.

At present, be extensive use of tertbutyl ether as gasoline component.The motor spirit that contains tertbutyl ether is described in the United States Patent (USP) 4 468 233 of mandate in 1984.These ether major parts come from refining of petroleum, but they can be produced by renewable resources equally.

Ethanol be as with gasoline mixture in the most promising a kind of engine fuel component.Ethanol derives from the processing to renewable raw material, is commonly referred to as organism, and the latter can be derived by carbonic acid gas under the influence of sun power.

Obviously, compare with gasoline combustion, the ethanol burning obviously reduces the generation of objectionable impurities.But the motor spirit that use mainly is made up of ethanol need be through specially designed engine.Simultaneously, use the spark-ignition type internal combustion engine of gasoline work to drive with the motor spirit that is no more than 10 volume % alcohol mixtures usually with containing gasoline.At present, in the U.S., this gasoline and alcoholic acid mixture are sold with " gasohol " title.The regulations of the relevant gasoline in Europe allow to add the ethanol of maximum 5 volume % in gasoline at present.

The main drawback of ethanol and gasoline mixture is concerning containing up to about 20 volume % alcoholic acid mixtures, compare with original gasoline, and dry blowing air pressure equivalent increases.

Fig. 1 is illustrated under 37.8 ℃, the relation of ethanol content in dry blowing air pressure equivalent (DVPE) and ethanol and summer gasoline A92, summer and the winter gasoline A95 mixture.The gasoline that is called A92 and A95 is the normal benzene of buying in the service station of the U.S. and Sweden.Gasoline A92 derives from the U.S., and gasoline A95 derives from Sweden.Employed ethanol is the fuel-grade ethanol of being produced by U.S. Williams company.According to the DVPE of standard method ASTM D 5191 at the SGS of Stockholm, SWE experimental determination mixture.

Concerning the alcohol concn scope of the 5-10 volume % of the motor spirit that is especially suitable for use as the standard spark ignition engine, the data among Fig. 1 show that the DVPE of gasoline and alcohol mixture can surpass more than 10% of source gasoline DVPE.Because the gasoline of the common supply the market in oil company has been the DVPE of the highest permission, this is by the strict restriction of standing regulations, and it is impossible joining ethanol in the obtainable gasoline of this present commerce.

Known, the DVPE of gasoline and alcohol mixture can regulate.The United States Patent (USP) 5 015 356 that on May 14th, 1991 authorized is mentioned, and can pass through from C ₄-C ₁₂Remove volatile and nonvolatile component in the gasoline to produce C ₆-C ₉Or C ₆-C ₁₀Gasoline intermediate and redistribution gasoline.It is said that the existing gasoline of this fuel ratio more helps the adding of alcohol, because they have lower dry blowing air pressure equivalent (DVPE).The shortcoming of the method for this adjusting gasoline and alcohol mixture DVPE is must produce the gasoline of special redistribution for obtaining this mixture, and this can influence supply chain unfriendly and cause the motor spirit price increase.Simultaneously, this gasoline and have higher flash-point with the alcoholic acid mixture, this can weaken their performance.

Known, some compound can reduce DVPE joining gasoline or its when containing in the alcoholic acid mixture.For example, the author of the United States Patent (USP) 5 433 756 that authorize July 18 nineteen ninety-five discloses chemical clean burning promoter compound, and it contains ketone, itroparaffin and be different from alcoholic acid alcohol except that gasoline.The author points out that disclosed catalysis clean burning enhancer compositions can reduce the DVPE of Fuel Petroleum in described patent.In this patent, do not mention of the influence of any described clean burning enhancer compositions for the DVPE of gasoline and alcohol mixture.

The United States Patent (USP) 5 688 295 that on November 18th, 1997 authorized provides a kind of compound, as gasoline dope or as the fuel that is used for the normal benzene engine.According to this invention, a kind of alcohol-group fuel additive has been proposed.Described fuel dope contains the alcohol of 20-70%, the ketone of 2.5-20% and ether, the aliphatic series of 0.03-20% and silicon compound, the toluene of 5-20%, and the petroleum spirit of 4-45% (mineral spirits).Alcohol is methyl alcohol or ethanol.Point out that in this patent described additive can improve quality of gasoline, particularly reduce DVPE.This shortcoming of regulating the method for motor spirit DVPE is to be to need a large amount of additives, promptly is no less than 15% of volume of mixture; During with the use silicon compound, its burning can produce silicon oxide, and this can cause engine scuffing to increase.

In WO9743356, a kind of method that reduces the vapour pressure of hydrocarbon-pure blend by the cosolvent that adds hydrocarbon and alcohol in blend has been described.Also disclose a kind of spark ignition engine fuel composition, comprised a kind of C ₅-C ₈The hydrocarbon component of straight or branched alkane does not contain alkene, aromatic hydrocarbons, benzene and sulphur substantially, wherein the minimum anti-knock index of the hydrocarbon component of measuring according to ASTM D2699 and D2700 be 65 and the highest DVPE that measures according to ASTM D5191 be 15psi; A kind of fuel-grade alcohol; And the cosolvent that is used for hydrocarbon component and alcohol, wherein select the consumption of the component of fuel composition to make that the minimum anti-knock index of motor spirit is 87, the highest DVPE is 15psi.Employed cosolvent is biological deutero-2-methyltetrahydrofuran (MTHF) and other heterocyclic ether, as pyrans and oxepans, and preferred MTHF.

The shortcoming of the normal method of dry blowing vapour pressure that is used to regulate hydrocarbon liquid and alcohol mixture is as follows:

(1) must only use C ₅-C ₈The hydrocarbon component of straight or branched alkane, its (i) do not contain the unsaturated compound as alkene, benzene and other aromatic hydrocarbons, (ii) sulfur-bearing not, as described in the specification sheets of this invention, (iii) the hydrocarbon component is coal gas body condensate oil or natural gas condensate;

(2) must only use oxygen containing particular type compound, that is, ether comprises short chain and the heterocyclic ether cosolvent as hydrocarbon component and alcohol;

(3) must in fuel, use a large amount of alcohol, be not less than 25%;

(4) must use a large amount of cosolvent, be not less than 20% methyltetrahydrofuran; With

(5) when using such fuel composition, need adjust spark-ignition type internal combustion engine, and, especially, must change truck-mounted computer software or replace truck-mounted computer itself.

Therefore, an object of the present invention is to provide a kind of method that can overcome above-mentioned defective in the prior art.A primary purpose of the present invention provides and will be used for the containing up to 20 volume % alcoholic acid C of general-purpose petrol engine ₃-C ₁₂The vapour pressure of hydrocarbon-based fuel mixture reduces to being no more than C ₃-C ₁₂The vapour pressure of hydrocarbon itself, or can satisfy the method for Fuel Petroleum standard-required at least.

The invention summary

Above-mentioned purpose of the present invention can realize by the method for claim 1 preamble, it is characterized in that being selected from least a oxygenated additive in the following type compound, its amount that is used for fuel mixture is at least 0.05 volume % of fuel mixture total amount, and described compound is: be different from alcoholic acid alcohol, ketone, ether, ester, hydroxyketone, ketone ester and Oxygenic heterocyclic compounds.

The inventor has been found that compound that particular type has an oxy radical can reduce the vapour pressure of gasoline-alcohol mixture unexpectedly.

This effect can also be by specific C ₆-C ₁₂Compound is further strengthened on the hop.

They also find, it is shocking, the oxygen-containing component of the application of the invention can keep even improve the octane value of gained hydrocarbon-based fuel mixture.

The method according to this invention can be used for whole fuel composition up to the fuel-grade ethanol (b) of about 20 volume %.Used oxygenated additive (c) can derive from renewable raw material, and employed hydrocarbon component (a) can be, for example the gasoline of any standard (it needn't carry out redistribution) also can randomly contain aromatic hydrocarbons composition and sulphur, also can be the hydrocarbon that derives from renewable raw material.

Can prepare the fuel that is used for the standard spark-ignition type internal combustion engine by method of the present invention, this fuel can make described engine have optimum performance identical when using at present commercially available normal benzene.The method of the application of the invention also can reduce the quantity discharged and the fuel consumption of toxic substance in the tail gas.

According to an aspect of the present invention, except dry blowing vapour pressure equivalent (DVPE), also can control anti-knock index (octane value) aptly.

A further object of the invention provides a kind of fuel-grade ethanol (b) and oxygenated additive (c) and optional, other component (d), and it is independent C ₆-C ₁₂The additive agent mixture of cut or its mixture, described additive agent mixture can be used for method of the present invention subsequently, that is, join in the hydrocarbon component (a).(b) and (c) and the mixture itself of optional (d) also can be used as the modification engine, that is, and non-standard petrolic fuel.This additive agent mixture also can be used for regulating octane value and/or reduce the vapour pressure of high-vapor-pressure hydrocarbon component.

From following detailed description, embodiment and dependent claims, additional objects and advantages of this invention will be conspicuous.

The accompanying drawing summary

In Fig. 1, provide the function of dry blowing vapour pressure equivalent (DVPE) to ethanol content in the ethanol of prior art and the gasoline mixture.

In Fig. 2, provide the function of the dry blowing vapour pressure equivalent (DVPE) of different fuel of the present invention to its amount of alcohol.

Detailed Description Of The Invention

This method is so that C₃-C ₁₂The hydrocarbon fraction can be used as hydrocarbon component (a), comprises that this is more in the wide region Narrower range, to the existence of saturated and unsaturated hydrocarbons, aromatic hydrocarbons and sulphur without limits. Particularly, The hydrocarbon component can be at present commercially available normal benzine and the coal that derives from PETROLEUM PROCESSING, chemical recovering method The hydrocarbon mixture of tail gas, natural gas and synthesis gas of carbonization. Also can comprise from renewable raw material The hydrocarbon that obtains. C₃-C ₁₂The hydrocarbon fraction can make by fractionation or with various hydrocarbon mixing usually.

Importantly, as previously mentioned, component (a) can comprise aromatic hydrocarbons and sulphur, itself or be common system Or natural being present in the hydrocarbon component.

The fuel mixture that contains as many as 20 volume % ethanol (in straight alcohol) according to the inventive method DVPE can be lowered. According to the preferred embodiments of the invention, contain ethanol hydrocarbon-based fuel mixture Vapour pressure in the vapour pressure that caused by ethanol raise and reduced by 50%, more preferably 80%, very Reduce to being equivalent to hydrocarbon component self to more preferably this vapour pressure that contains ethanol hydrocarbon-based fuel mixture Level, and/or to the vapour pressure of marketable gasolines standard requirement.

Can find out from embodiment, if necessary, DVPE can be reduced to even be lower than use The DVPE of hydrocarbon component.

According to the most preferred embodiment, other character of fuel such as octane number, remain on required In the standard limit of wanting.

This can be by adding at least a oxygen that contains that is different from ethanol in the engine fuel mixture Organic compound (c) is realized. This oxygen-containing organic compound can be regulated (i) dry blowing vapour pressure equivalent, (ii) anti-knock index of motor fuel composite and other performance parameters and (iii) reduction fuel Noxious material discharging in consumption and the motor exhaust. Oxygenatedchemicals (c) contains links at least a time Oxygen in the row functional group:These functional groups are present in, for example, in the organic compound of following type and they can be used for this Bright: alcohol, ketone, ether, hydroxy-ketone, ketone ester and have the heterocycle of ether ring.

Fuel additive can or preferably come renewable source derived from fossil Ji Yuan, such as organism.

Oxygenated additives (c) generally can be the alcohol that is different from ethanol. Generally, can Use aliphatic alcohol or alicyclic ring alcohol, saturated or undersaturated all can, but preference chain alkanol. More preferably tool The alkanol that general formula R-OH is arranged, wherein R is the alkyl that contains 3-10 carbon atom, more preferably contains 3-8 Individual carbon atom is as using propyl alcohol, isopropyl alcohol, n-butanol, isobutanol, the tert-butyl alcohol, positive penta Alcohol, isoamyl alcohol, tert-pentyl alcohol, 4-methyl-2-amylalcohol, diethyl carbinol, diisopropylcarbinol, 2-Ethyl hexanol, 2,4,4-trimethyl amylalcohol, 2,6-2,6-dimethyl-4-heptanol, linalool, 3,6-diformazan Base-3-octanol, phenol, phenyl methanol, methylphenol, methyl cyclohexanol or similarly alcohol and it Mixture.

Component (c) also can be aliphatic series or the alicyclic ketone with general formula R-C (O)-R ', saturated or unsaturated all can, wherein R and R ' are identical or different, C respectively does for oneself₁-C ₆Alkyl can be ring-type also, is preferably C₁-C ₄Alkyl. In the preferred ketone (R+R ') have 4-9 carbon atom, comprise Methylethyl Ketone, methyl propyl ketone, diethyl ketone, methyl iso-butyl ketone (MIBK), 3-heptanone, methyln-hexyl ketone, two different Butyl ketone, cyclohexanone, acetophenone, trimethylcyclohexanone or similar ketone and composition thereof.

Component (c) also can be aliphatic series or the alicyclic ether with general formula R-O-R ', has both comprised saturated ethers, comprises unsaturated ethers again, and wherein R and R ' are identical or different, and C respectively does for oneself ₁-C ₁₀Alkyl.Generally speaking, preferred rudimentary C ₁-C ₆Dialkyl ether.The total number of carbon atoms is preferably 6-10 in the ether.Typical ether comprises tert amyl methyl ether(TAME), methyl isoamyl ether, ethyl isobutyl ether, Ethyl Tertisry Butyl Ether, dibutyl ether, diisobutyl ether, diisoamyl ether, methyl-phenoxide, methylbenzene methyl ether, phenyl ethyl ether or similar ether and composition thereof.

Component (c) can also be aliphatic series or the alicyclic esters with general formula R-C (O)-OR ', comprises saturated and unsaturated ester, and wherein R and R ' are identical or different.R and R ' are preferably alkyl, and alkyl more preferably more preferably contains the alkyl and the phenyl of 1-6 carbon atom.Preferred especially R is C ₁-C ₄And R ' is C ₄-C ₆Ester.Typical ester is a chain acid alkyl ester, comprises n-butyl acetate, isobutyl acetate, tert.-butyl acetate, isobutyl propionate, isobutyl isobutyrate, n-amyl acetate, Isoamyl Acetate FCC, isoamyl propionate, methyl benzoate, phenylacetate, hexalin acetate or similar ester and composition thereof.Usually, the preferred ester that contains 5-8 carbon atom that uses.

Additive (c) can contain two oxy radicals that link to each other with different carbon atoms simultaneously in a part.

Additive (c) can be a hydroxyketone, and preferred hydroxyketone has following general formula: Or Wherein R is an alkyl, R ₁For hydrogen or alkyl, be preferably low alkyl group, i.e. (C ₁-C ₄).Generally speaking, the preferred keto-alcohol that contains 4-6 carbon atom that uses.Typical hydroxyketone comprises 1-hydroxyl-2-butanone, 3-hydroxyl-2-butanone, 4-hydroxy-4-methyl-2 pentanone or similar keto-alcohol or its mixture.

In another one embodiment still, fuel dope (c) is a ketone ester, preferably has following general formula: Wherein R is an alkyl, is preferably low alkyl group, i.e. (C ₁-C ₄).Typical ketone ester comprises methyl acetoacetate, methyl aceto acetate and tert-butyl acetoacetate.The ketone ester that preferably contains 6-8 carbon atom.

Additive (c) also can be the heterogeneous ring compound that contains epoxy, preferably contains C ₄-C ₅The oxygen heterocyclic ring of ring.More preferably, the total carbon atom number of heterocycle additive is 5-8.Additive can preferably have following general formula (1) or (2): Wherein R is hydrogen or alkyl, is preferably-CH ₃, and R ₁For-CH ₃Or-OH, or-CH ₂OH, or CH ₃CO ₂CH ₂-.

Typical heterocycle additive (c) is a tetrahydrofurfuryl alcohol, tetrahydrofurfuryl acetate, dimethyl-tetrahydrofuran, tetramethyl-tetrahydrofuran (THF), methyl tetrahydropyrans, 4-methyl-4-oxygen tetrahydropyrans or similar heterocycle additive or its mixture.

Component (c) also can come from the mixture of the above different one or more above-mentioned any compound of classes of compounds.

Operable suitable fuel-grade alcohol (b) can be identified by those skilled in the art at an easy rate according to the present invention.The example that is fit to of ethanol component is the ethanol that contains 99.5% essential substance, and when determining the consumption of component (c), included content is that at least 0.5% and any impurity of belonging to the definition of top component (c) of ethanol volume all should be considered in the ethanol.That is to say that in order to be considered as the part of component (c), such impurity must be included in the scope of alcoholic acid 0.5% at least.In order to satisfy existing gasoline engine fuel standard-required, any water, if be present in the ethanol, preferably its amount is no more than about 0.25 volume % of fuel mixture total amount.

Therefore, also can be as the Denatured alcohol mixture that offers have an appointment containing of market 92% ethanol, hydrocarbon and by product as the ethanol component of fuel composition of the present invention.

Except as otherwise noted, all consumption is the volume % of motor fuel composite cumulative volume.

Usually, the consumption of ethanol (b) is 0.1-20%, is generally about 1 volume %-20 volume %, is preferably 3 volume %-15 volume %, more preferably about 5 volume %-10 volume %.The consumption that oxygenated additive (c) is general is the about 15 volume % of 0.05 volume %-, is more typically the about 15 volume % of 0.1 volume %-, is preferably about 3-10 volume %, most preferably is about 5-10 volume %.

Generally speaking, the amount of ethanol (b) and oxygenated additive (c) is 0.15-25 volume %, is generally about 0.5-25 volume %, is preferably about 1-20 volume %, and more preferably 3-15 volume % most preferably is 5-15 volume %.

Therefore, the ratio of ethanol in the motor fuel composite (b) and oxygenated additive (c) is generally 1: 150-400: 1, more preferably 1: 10-10: 1.

Based on the total oxygen content of the motor fuel composite of ethanol and oxygenated additive, represent with the oxygen wt% of the gross weight of motor fuel composite, be preferably and be not more than about 7wt%, more preferably be not more than about 5wt%.

According to a preferred embodiment of the invention, for obtaining to be suitable for the motor spirit of standard spark-ignition type internal combustion engine work, aforementioned hydrocarbon component, ethanol and other oxygen-containing component be mixed so that the motor fuel composite of gained has following character:

-density under 15 ℃ and common normal atmosphere is not less than 690kg/m ³

-in the amount of oxygen-containing component, oxygen level is no more than the 7%w/w of motor fuel composite;

-anti-knock index (octane value) is not less than the anti-knock index (octane value) of source hydrocarbon component, and is preferably 0.5 (RON+MON) and is not less than 80;

-dry blowing vapour pressure equivalent (DVPE) DVPE with source hydrocarbon component basically is identical, is preferably 20kPa-120kPa;

-acid content is no more than 0.1wt%HAc;

-pH is 5-9;

-aromaticity content is no more than 40 volume %, comprises benzene, and single to benzene, is no more than 1 volume %;

The evaporation limit of-liquid under common normal atmosphere is shown with the percentage table of the volume source of motor fuel composite:

Initial boiling point, 20 ℃ of minimum value

The volume of liquid evaporation (at 70 ℃, minimum value) 25 volume %

The volume of liquid evaporation (at 100 ℃, minimum value) 50 volume %

The volume of liquid evaporation (at 150 ℃, minimum value) 75 volume %

The volume of liquid evaporation (at 190 ℃, minimum value) 95 volume %

Distillation residue, maximum value 2 volume %

Full boiling point, 205 ℃ of maximum values

Sulphur content is no more than 50mg/kg

Resin content is no more than 2mg/100ml

According to a preferred embodiment of the inventive method, hydrocarbon component and ethanol should add together, add other oxygenatedchemicals subsequently in mixture.Afterwards, the gained motor fuel composite preferably should remain on and be not less than under-35 ℃ at least about 1 hour.Characteristics of the present invention are that the component of motor fuel composite can be to be added to each other to form the desired combined thing together.Do not require that generally stirring or other modes provide sufficient mixing to form composition.

According to a preferred embodiment of the invention, for obtaining being suitable for the motor fuel composite of standard spark-ignition type internal combustion engine work, and make for the harmful effect of environment and reduce to minimum, the preferred oxygen-containing component that comes from renewable raw material that uses.

Randomly, component (d) can be used for further reducing the vapour pressure of component (a) and (b) and fuel mixture (c), a kind of independent C that is selected from ₆-C ₁₂The aliphatic series of cut or alicyclic, saturated and undersaturated hydrocarbon can be used as component (d).Preferred hydrocarbons component (d) is for being selected from C ₈-C ₁₁Cut.(d) the example that is fit to is benzene,toluene,xylene, ethylbenzene, isopropyl benzene, isopropyl toluene, diethylbenzene, sec.-propyl dimethylbenzene, tert.-butylbenzene, 4-tert-butyltoluene, tertiary butyl dimethylbenzene, cyclooctadiene, cyclooctatetraene, 1,8-terpadiene, octane-iso, isononane, isodecane, isooctene, myrcene, other cymene (allocymene), tertiary butyl hexanaphthene or similar hydrocarbon and composition thereof.

Hydrocarbon component (d) also can be that the boiling point that obtains in the distillation of oil, bituminous coal resin or synthetic gas converted products is 100-200 ℃ a cut.

As already mentioned, the invention still further relates to a kind of component (b) and (c) and the additive agent mixture of optional components component (d) of containing, it can join in the hydrocarbon component (a) subsequently, also can be like this as the fuel of modification spark-ignition type internal combustion engine.

Ethanol in the preferable additives mixture (b) is 1 with the volume ratio of additive (c): 150-200: 1.A preferred embodiment according to additive agent mixture, described mixture contains the oxygen-containing component (c) that content is additive agent mixture 0.5-99.5 volume %, with content be the ethanol (b) of additive agent mixture 0.5-99.5 volume %, and content is additive agent mixture 0-99 volume %, be preferably 0-90 volume %, 0-79.5 volume % more preferably most preferably is at least a C that contains of 5-77 volume % ₆-C ₁₂Hydrocarbon is preferably C ₈-C ₁₁The component of hydrocarbon (d).The volume ratio of ethanol in the preferable additives mixture (b) and other binder components (c)+(d) summation is 1: 200-200: 1, more preferably 1: 10-10: 1.

Can set the octane value of additive agent mixture, by mixture (b), (c), (d) corresponding part are joined in the component (a), mixture can be used for the octane value of component (a) is adjusted to desirable value.

As the effect of the present invention that embodiment proved, provide following motor fuel composite, it should not be construed as and limits the scope of the invention, and only provides the explanation of the present embodiment preferred of some the present invention.

For a person skilled in the art, following content will be apparent, promptly, all fuel composition can certainly be by at first preparing component (b) and (c) among the following embodiment, the additive agent mixture of optional (d), afterwards this mixture is joined in the component (a) or obtain on the contrary mutually, under these circumstances, may need a certain amount of mixing.

Embodiment

Be preparation blended motor spirit, below and (d) as component (b), (c):

-in Sweden, can buy at Sekab, or in the U.S., the fuel-grade ethanol that can buy from ADM company and Williams company;

-oxygenatedchemicals, independent not replacement hydrocarbon and composition thereof has been bought from Merck in Germany, has bought from Lukoil in Russia.

-petroleum naphtha, it is a kind of oil product straight-run spirit that contains aliphatic series and alicyclic saturated and unsaturated hydrocarbons.Alkylide, it is a kind of almost hydrocarbon-fraction of whole different chain hydrocarbons that contains, it is obtained from the alkylation of iso-butylene by butanols.Alkylbenzene, it is a kind of aromatic hydrocarbons mixture that derives from benzene alkylation.Usually, the technical grade alkylbenzene contains ethylbenzene, propylbenzene, isopropyl benzene, butylbenzene etc.

All source gasoline and contain the alcoholic acid motor spirit comprises that those tests that contain component of the present invention all use standard A STM method to carry out in the SGS laboratory of Sweden and the Auto ResearchLaboratoies Inc. of the U.S..

The driving force test is carried out according to standard method of test EU2000 EDC EC98/69 on VOLVO 240 DL in 1987.

It is identical with standard EU/ECE test specification and driving circulation (91/441 EEC resp.ECE-R83/01 and 93/116EEC) that the new Europe of European 2000 (EU2000) drives circulation (NEDC) standard testing explanation.These standardized EU tests comprise the city driving circulation and extra city drives circulation and requirement meets special emissions regulations.Appearance sampling procedure such as exhaust emissions analysis use also uses flame ionization detector to carry out hydro carbons and detects.Exhaust emissions rule 91/441EEC (I section) has listed special CO, (HC+NO) and (PM) standard, and EU fuel consumption rule 93/116EEC (1996) has proposed quota of expenditure simultaneously.

Test uses VOLVO 240 DL in 1987 to carry out, and it be B230F, and 4 cylinders produce 83KW power and 2.32 liters of engines (No.LG4F20-87) of generation 185Nm moment of torsion in the time of 46 revolutions per seconds in the time of 90 revolutions per seconds.

Embodiment 1

Embodiment 1 proved and used according to ASTM D-5191, dry blowing vapour pressure equivalent be the gasoline of 90kPa (about 13psi) during as alkyl reduction contain the normal possibility of dry blowing vapour pressure of ethanol engine fuel.

For preparing this composition, use in Sweden from Shell the winter gasoline A92, A95 and the A98 that on market, sell at present that Statoil, Q8OK and Preem buy.

Fig. 1 shows the DVPE characteristic that contains ethanol engine fuel based on gasoline A95 in winter.Use in this example based on winter gasoline A92 and A98 the ethanol engine fuel that contains also shown similar characteristic.

Source gasoline contains aliphatic series and alicyclic C ₄-C ₁₂Hydrocarbon comprises saturated and unsaturated hydrocarbons.

Used winter, gasoline A92 had following characteristic:

DVPE＝89.0kPa

Anti-knock index 0.5 (RON+MON)=87.7

Fuel 1-1 (non-based on the present invention) contains winter gasoline A92 and has following character with ethanol and under different ethanol contents:

A92: ethanol=95: 5 volume %

DVPE＝94.4kPa

0.5(RON+MON)＝89.1

A92: ethanol=90: 10 volume %

DVPE＝94.0kPa

0.5(RON+MON)＝90.2

The following fuel 1-2 embodiment different with 1-3 proof is to the dry blowing vapour pressure equivalent (DVPE) that the contains ethanol engine fuel possibility of regulating based on gasoline A92 in winter.

Fuel 1-2 of the present invention contains gasoline A92 in winter (a), ethanol (b) and oxygenated additive (c) and do not have following character simultaneously forming:

A92: ethanol: isobutyl acetate=88.5: 4.5: 7 volume %

DVPE＝89.0kPa

0.5(RON+MON)＝89.9

A92: ethanol: Isoamyl Acetate FCC=88: 5: 7 volume %

DVPE＝88.6kPa

0.5(RON+MON)＝89.0

A92: ethanol: Pyranton=88.5: 4.5: 7 volume %

DVPE＝89.0kPa

0.5(RON+MON)＝89.65

A92: ethanol: methyl aceto acetate=90.5: 2.5: 7 volume %

DVPE＝89.0kPa

0.5(RON+MON)＝87.8

A92: ethanol: isoamyl propionate=87.5: 5.5: 7 volume %

DVPE＝88.7kPa

0.5(RON+MON)＝90.4

Following motor fuel composite proof does not always need and will exist the excessive DVPE of the motor spirit that causes to be reduced to the DVPE level of source gasoline owing to alcoholic acid.Following of some occasion needs it is adjusted to consistent with existing corresponding gasoline rule request.Winter, the DVPE level of gasoline was 90kPa.

A92: ethanol: 3-heptanone=85: 7.5: 7.5 volume %

DVPE＝90.0kPa

0.5(RON+MON)＝89.9

A92: ethanol: 2,6-2,6-dimethyl-4-heptanol=85: 8.5: 6.5 volume %

DVPE＝90.0kPa

0.5(RON+MON)＝90.3

A92: ethanol: diisobutyl ketone=85: 7.5: 7.5 volume %

DVPE＝90.0kPa

0.5(RON+MON)＝90.25

Fuel 1-3 of the present invention contains gasoline A92 in winter (a), ethanol (b), oxygenated additive (c) and C ₆-C ₁₂Hydrocarbon (d), and do not have following character simultaneously forming:

A92: ethanol: primary isoamyl alcohol: alkylide=79: 9: 2: 10 volume %

The alkylide boiling point is 100-130 ℃

DVPE＝88.5kPa

0.5(RON+MON)＝90.25

A92: ethanol: isobutyl acetate: petroleum naphtha=80: 5: 5: 10 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝88.7kPa

0.5(RON+MON)＝88.6

A92: ethanol: the trimethyl carbinol: petroleum naphtha=81: 5: 5: 9 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝87.5kPa

0.5(RON+MON)＝89.6

Following motor fuel composite proof does not always need and will exist the excessive DVPE of the motor spirit that causes to be reduced to the DVPE level of source gasoline owing to alcoholic acid.Following of some occasion needs it is adjusted to consistent with the requirement of existing corresponding gasoline rule.Winter, the DVPE level of gasoline was 90kPa.

A92: ethanol: primary isoamyl alcohol: benzene: ethylbenzene: diethylbenzene=82.5: 9.5: 0.5: 0.5: 3: 4 volume %

DVPE＝90kPa

0.5(RON+MON)＝91.0

A92: ethanol: isobutyl acetate: toluene=82.5: 9.5: 0.5: 7.5 volume %

DVPE＝90kPa

0.5(RON+MON)＝90.8

A92: ethanol: isopropylcarbinol: primary isoamyl alcohol :-dimethylbenzene=82.5: 9.2: 0.2: 0.6: 7.5 volume %

DVPE＝90kPa

0.5(RON+MON)＝90.9

Following composition 1-5 and 1-6 proof is to the dry blowing vapour pressure equivalent (DVPE) that the contains ethanol engine fuel possibility of regulating based on gasoline A98 in winter.

Used winter, gasoline A98 had following characteristic:

DVPE=89.5kPa anti-knock index 0.5 (RON+MON)=92.35

Contrast fuel 1-4 contains winter gasoline A98 and has following character with ethanol and when the different composition:

A98: ethanol=95: 5 volume %

DVPE＝95.0kPa

0.5(RON+MON)＝92.85

A98: ethanol=90: 10 volume %

DVPE＝94.5kPa

0.5(RON+MON)＝93.1

Fuel 1-5 contains gasoline A98 in winter (a), ethanol (b) and oxygenated additive (c) and do not have following character simultaneously forming:

A98: ethanol: isopropylcarbinol=84: 9: 7 volume %

DVPE＝88.5kPa

0.5(RON+MON)＝93.0

A98: ethanol: tert.-butyl acetate=84: 9: 7 volume %

DVPE＝89.5kPa

0.5(RON+MON)＝93.3

A98: ethanol: benzylalcohol=85: 7.5: 7.5 volume %

DVPE＝89.5kPa

0.5(RON+MON)＝93.05

A98: ethanol: pimelinketone=85: 7.5: 7.5 volume %

DVPE＝88.0kPa

0.5(RON+MON)＝92.9

A98: ethanol: diethyl ketone=85: 7.5: 7.5 volume %

DVPE＝89.0kPa

0.5(RON+MON)＝92.85

A98: ethanol: methyl propyl ketone=85: 7.5: 7.5 volume %

DVPE＝89.5kPa

0.5(RON+MON)＝93.0

A98: ethanol: methyl iso-butyl ketone (MIBK)=85: 7.5: 7.5 volume %

DVPE＝89.0kPa

0.5(RON+MON)＝92.65

A98: ethanol: 3-heptanone=85: 7.5: 7.5 volume %

DVPE＝89.5kPa

0.5(RON+MON)＝92.0

Following motor fuel composite proof does not always need and will exist the excessive DVPE of the motor spirit that causes to be reduced to the DVPE level of source gasoline owing to alcoholic acid.Following of some occasion needs it is adjusted to consistent with the requirement of the rule of existing corresponding gasoline.Winter, the DVPE level of gasoline was 90kPa.

A98: ethanol: methyl iso-butyl ketone (MIBK)=85: 8: 7 volume %

DVPE＝90.0kPa

0.5(RON+MON)＝92.7

A98: ethanol: pimelinketone=85: 8.5: 6.5 volume %

DVPE＝90.0kPa

0.5(RON+MON)＝93.0

A98: ethanol: methylphenol=85: 8: 7 volume %

DVPE＝90.0kPa

0.5(RON+MON)＝93.05

Fuel 1-6 contains gasoline A98 in winter (a), ethanol (b), oxygenated additive (c) and C ₆-C ₁₂Hydrocarbon (d), and do not have following character simultaneously forming:

A98: ethanol: primary isoamyl alcohol: octane-iso=80: 5: 5: 10 volume %

DVPE＝82.0kPa

0.5(RON+MON)＝93.2

A98: ethanol: primary isoamyl alcohol :-isopropyl toluene=78.2: 6.1: 6.1: 9.6 volume %

DVPE＝81.0kPa

0.5(RON+MON)＝93.8

A98: ethanol: isopropylcarbinol: petroleum naphtha=80: 5: 5: 10 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝82.5kPa

0.5(RON+M0N)＝92.35

A98: ethanol: isopropylcarbinol: petroleum naphtha :-isopropyl toluene=80: 5: 5: 5: 5 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝82.0kPa

0.5(RON+MON)＝93.25

A98: ethanol: tert.-butyl acetate: petroleum naphtha=83: 5: 5: 7 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝82.1kPa

0.5(RON+MON)＝92.5

A98: ethanol: primary isoamyl alcohol: octane-iso=85: 5: 5: 5 volume %

DVPE＝90.0kPa

0.5(RON+MON)＝93.3

A98: ethanol: isopropylcarbinol: petroleum naphtha=85: 5: 5: 5 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝90.0kPa

0.5(RON+MON)＝93.0

A98: ethanol: isopropylcarbinol: sec.-propyl dimethylbenzene=85: 9.5: 0.5: 5 volume %

DVPE＝90kPa

0.5(RON+MON)＝93.1

Following motor fuel composite proof does not always need and will exist the excessive DVPE of the motor spirit that causes to be reduced to the DVPE level of source gasoline owing to alcoholic acid.Usually, this is needs when the DVPE of source gasoline value is higher than the rule limits of existing corresponding gasoline.Like this, for example, with winter gasoline to be converted into summer gasoline be possible.The DVPE level of summer gasoline is 70kPa.

A98: ethanol: isopropylcarbinol: primary isoamyl alcohol: petroleum naphtha=60: 9.5: 0.5: 15: 15 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝70kPa

0.5(RON+MON)＝92.85

A98: ethanol: isopropylcarbinol: alkylide: petroleum naphtha=60: 9.5: 0.5: 15: 15 volume %

The petroleum naphtha boiling point is 100-200 ℃

The alkylide boiling point is 100-130 ℃

DVPE＝70kPa

0.5(RON+MON)＝92.6

A98: ethanol: the trimethyl carbinol: petroleum naphtha=60: 9: 3: 28 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝70kPa

0.5(RON+MON)＝91.4

Following fuel 1-8,1-9 and 1-10 proof is to the dry blowing vapour pressure equivalent (DVPE) that the contains ethanol engine fuel possibility of regulating based on gasoline A95 in winter.

Winter, gasoline A95 had following characteristic:

DVPE＝89.5kPa

Anti-knock index 0.5 (RON+MON)=90.1

The test of carrying out according to above-mentioned standard method of test EU2000 NEDC EC 98/69 proves following result:

CO (carbon monoxide) 2.13g/km;

HC (hydrocarbon) 0.280g/km;

NO _x(oxynitride) 0.265g/km;

CO ₂(carbonic acid gas) 227.0g/km;

NMHC ^* 0.276g/km；

Fuel consumption, F _c, l/100km 9.84

* non-methane hydrocarbon.

Contrast fuel 1-7 contains gasoline A95 and ethanol in winter, and does not have following character simultaneously forming:

A95: ethanol=95: 5 volume %

DVPE＝94.9kPa

0.5(RON+MON)＝91.6

A95: ethanol=90: 10 volume % (hereinafter referred to as RFM1)

DVPE＝94.5kPa

0.5(RON+MON)＝92.4

The test carried out proves following result to contrast fuel mixture (RFM1), and it is than gasoline A95 in winter:

CO -15.0％；

HC -7.3％；

NO _x +15.5％；

CO ₂ +2.4％；

NMHC ^* -0.5％；

Fuel consumption, F _c, l/100km+4.7%

On behalf of quantity discharged, "-" reduce, and on behalf of quantity discharged, "+" increase.

The invention fuel 1-8 of institute contains gasoline A95 in winter (a), ethanol (b) and oxygenated additive (c), and do not have following character simultaneously forming:

A95: ethanol: diisoamyl ether=86: 8: 6 volume %

DVPE＝87.5kPa

0.5(RON+MON)＝90.6

A95: ethanol: isobutyl acetate=88: 5: 7 volume %

DVPE＝87.5kPa

0.5(RON+MON)＝91.85

A95: ethanol: isoamyl propionate=88: 5: 7 volume %

DVPE＝87.0kPa

0.5(RON+MON)＝91.35

A95: ethanol: Isoamyl Acetate FCC=88: 5: 7 volume %

DVPE＝87.5kPa

0.5(RON+MON)＝91.25

A95: ethanol: methyln-hexyl ketone=88: 5: 7 volume %

DVPE＝87.0kPa

0.5(RON+MON)＝90.5

A95: ethanol: tetrahydrofurfuryl alcohol=88: 5: 7 volume %

DVPE＝87.5kPa

0.5(RON+MON)＝90.6

A95: ethanol: diisoamyl ether=87: 9: 4 volume %

DVPE＝90.0kPa

0.5(RON+MON)＝91.0

A95: ethanol: Isoamyl Acetate FCC=88: 7: 5 volume %

DVPE＝90.0kPa

0.5(RON+MON)＝91.3

A95: ethanol: tetrahydrofurfuryl alcohol=88: 7: 5 volume %

DVPE＝90.0kPa

0.5(RON+MON)＝90.8

The invention fuel 1-9 of institute contains gasoline A95 in winter (a), ethanol (b), oxygenated additive (c) and C ₆-C ₁₂Hydrocarbon (d), and do not have following character simultaneously forming:

A95: ethanol: primary isoamyl alcohol: alkylide=83.7: 5: 2: 9.3 volume %

The alkylide boiling point is 100-130 ℃

DVPE＝88.0kPa

0.5(RON+MON)＝91.65

A95: ethanol: primary isoamyl alcohol: petroleum naphtha=83.7: 5: 2: 9.3 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝88.5kPa0.5(RON+MON)＝90.8

A95: ethanol: isobutyl acetate: alkylide=81: 5: 5: 9 volume %

The alkylide boiling point is 100-130 ℃

DVPE＝87.0kPa

0.5(RON+MON)＝92.0

A95: ethanol: isobutyl acetate: petroleum naphtha=81: 5: 5: 9 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝87.5kPa

0.5(RON+MON)＝91.1

A95: ethanol: primary isoamyl alcohol: dimethylbenzene=80: 9.5: 0.5: 10 volume %

DVPE＝90.0kPa

0.5(RON+MON)＝92.1

A95: ethanol: isopropylcarbinol: primary isoamyl alcohol: petroleum naphtha=80: 9.2: 0.2: 0.6: 10 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝90.0kPa

0.5(RON+MON)＝91.0

A95: ethanol: isopropylcarbinol: primary isoamyl alcohol: petroleum naphtha: alkylide=80: 9.2: 0.2: 0.6: 5: 5 volume %

The petroleum naphtha boiling point is 100-200 ℃

The alkylide boiling point is 100-130 ℃

DVPE＝90.0kPa

0.5(RON+MON)＝91.6

A95: ethanol: isopropylcarbinol: primary isoamyl alcohol: petroleum naphtha: octane-iso=60: 9.2: 0.2: 0.6: 15: 15 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝70.0kPa

0.5(RON+MON)＝91.8

A95: ethanol: tert.-butyl acetate: petroleum naphtha=60: 9: 1: 30 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝70.0kPa0.5(RON+MON)＝90.4

Fuel 1-10 contains the gasoline A95 in winter of 75 volume %, the ethanol of 9.6 volume %, and the isopropylcarbinol of 0.4 volume %, between 4.5 volume %-boiling point of isopropyl toluene and 10.5 volume % is 100-200 ℃ a petroleum naphtha.This combusting preparation and gasoline as a comparison and the contrast of alcoholic acid mixture (RFM1) have proved reduction DVPE, increase octane value, reduce the level of toxic substance quantity discharged in the tail gas and the possibility of reduction fuel consumption.Motor fuel composite has following character:

Density in the time of 15 ℃ is according to ASTM D 4052 749.2kg/m3;

Initial boiling point is according to 86 29 ℃ of ASTM D;

-70 ℃ of 47.6 volume % of the part of can vaporizing;

-100 ℃ of 55.6 volume % of the part of can vaporizing;

-150 ℃ of 84.2 volume % of the part of can vaporizing;

-180 ℃ of 97.5 volume % of the part of can vaporizing;

194.9 ℃ of full boiling points;

Vaporization resistates 1.3 volume %;

Vaporization loss 1.6 volume %;

Oxygen level is according to ASTM D 4815 3.7%w/w;

Acidity value, according to ASTM D 1613, wt%HAC 0.004;

PH is according to ASTM D 1,287 6.6;

Sulphur content is according to ASTM D 5453 18mg/kg;

Gum level is according to ASTM D 381 1mg/100ml;

Water-content is according to ASTM D6304 0.03%w/w;

Aromatic hydrocarbons according to SS 155120, comprises benzene 30.2 volume %;

Benzene, single meter is according to EN238 0.7 volume %;

DVPE is according to ASTM D 5191 89.0kPa;

Anti-knock index 0.5 (RON+MON) is according to ASTM D

2699-86 and ASTM D 2700-86 92.6

According to standard method of test EU2000 NEDC EC98/69 the test that motor spirit preparation 1-10 carries out is proved following result, it is than gasoline A95 in winter;

CO -21％；

HC -9％；

NO _x +12.8％；

CO ₂ +2.38％；

NMHC -6.4％；

Fuel consumption, F _c, l/100km+3.2%

Combusting preparation 1-1 to 1-10 shows that the DVPE value that contains ethanol engine fuel based on summer grade gasoline with respect to test reduces.When with the additive among other oxygenatedchemicals alternate embodiments 1-1 to 1-10 of the present invention, can obtain similar result.

For preparing the combusting preparation 1-1 to 1-10 of this motor fuel composite, initial gasoline is mixed and in this fuel mixture, adds corresponding oxygenated additive with ethanol.Then allowing the gained motor fuel composite being not less than under-35 ℃ of conditions before test placed 1 to 24 hour.Any mixing equipment is not used in the preparation of all above-mentioned preparations.

Consider at the same time under the condition of vapour pressure and antiknock stability, determined to meet the employed possibility of using the additive agent mixture that is different from alcoholic acid oxygenated additive (c) and ethanol (b) in the ethanol engine fuel mixed oil that contains of gasoline standard required standard internal combustion spark ignited engine at preparation.

Following fuel composition has proved this possibility.

The mixture that contains 50% ethanol and 50% primary isoamyl alcohol is sneaked into winter-grade gasoline with different proportionings, and its dry blowing vapour pressure equivalent (DVPE) is no more than 90kPa.The full income mixture has and is not higher than gasoline rule desired DVPE value, i.e. 90kPa in winter.

A92: ethanol: primary isoamyl alcohol=87: 6.5: 6.5 volume %

DVPE＝89.0kPa

0.5(RON+MON)＝90.15

A95: ethanol: primary isoamyl alcohol=86: 7.0: 7.0 volume %

DVPE＝89.3kPa

0.5(RON+MON)＝92.5

A98: ethanol: primary isoamyl alcohol=85: 7.5: 7.5 volume %DVPE=86.5kPa

0.5(RON+MON)＝92.9

When Fig. 2 shows the mixture 2 that will contain 33.3% ethanol and 66.7% tertiary amyl alcohol and winter, gasoline A95 mixed, the funtcional relationship of dry blowing vapour pressure equivalent (DVPE) and ethanol content.Fig. 2 proof can't make the vapour pressure of these compositions be increased to be higher than the required standard DVPE value that reaches of winter-grade gasoline, i.e. 90kPa when ethanol content in the gasoline is changed in the 0-11% scope.

Gasoline A92 and A98 in winter for having sneaked into the additive agent mixture that contains 33.3 volume % ethanol and 66.7 volume % tertiary amyl alcohols also observes similar DVPE characteristic.

Contain ethanol petrol in resulting composition, increase in the 0-11 volume % scope effect that ethanol content can reduce vapour pressure at the part oxygenated additive by C ₆-C ₁₂Hydrocarbon (component (d)) also can be observed when substituting.The following composition proof effect of the inventive method gained.

One additive agent mixture contains 40 volume % ethanol, 10 volume % isopropylcarbinols and 50 volume % isopropyl toluenes, and it mixes with the gasoline in winter that DVPE is not higher than 90kPa.The gained different compositions has following character:

A92: ethanol: isopropylcarbinol: isopropyl toluene=85: 6: 1.5: 7.5 volume %DVPE=84.9kPa

0.5(RON+MON)＝93.9

A95: ethanol: isopropylcarbinol: isopropyl toluene=80: 8: 2: 10 volume %DVPE=84.0kPa

0.5(RON+MON)＝94.1

A98: ethanol: isopropylcarbinol: isopropyl toluene=86: 5.6: 1.4: 7 volume %

DVPE＝85.5kPa

0.5(RON+MON)＝93.8

As other oxygenatedchemicalss of the present invention and C ₆-C ₁₂The ratio use is used for this mixture preparing when containing ethanol petrol with the preparation additive agent mixture hydrocarbon then according to the present invention, obtains similar result.These gasoline meet the requirement of the motor spirit that is used for the standard spark ignition engines fully.

Embodiment 2

Embodiment 2 has proved when using dry blowing vapour pressure equivalent to be used as alkyl according to ASTM D-5191 survey as the gasoline of 70kPa (about 10psi), has reduced the normal possibility of dry blowing vapour pressure that contains ethanol engine fuel.

For preparing this composition mixture, used present commercially available purchasing in Shell, Statoil, the A92 of Q8OK and Preem, A95 and A98 summer gasoline in Sweden.

Source gasoline comprises aliphatic series and alicyclic C ₄-C ₁₂Hydrocarbon comprises saturated and unsaturated person.

Fig. 1 shows the DVPE character that contains ethanol engine fuel based on summer gasoline A95.The ethanol engine fuel that contains of gasoline A92 and A98 has shown similar character respectively based on winter.

Following fuel 2-2 and 2-3 have proved the possibility of regulating based on the dry blowing vapour pressure equivalent (DVPE) that contains ethanol engine fuel of summer gasoline A92.

Summer gasoline A92 has following character:

DVPE＝70.0kPa

Anti-knock index 0.5 (RON+MON)=87.5

Contrast fuel 2-1 contains summer gasoline A92 and ethanol, and does not have following character simultaneously at composition:

A92: ethanol=95: 5 volume %

DVPE＝77.0kPa

0.5(RON+MON)＝89.3

A92: ethanol=90: 10 volume %

DVPE＝76.5kPa

0.5(RON+MON)＝90.5

Fuel 2-2 contains summer gasoline A92 (a), ethanol (b) and oxygenated additive (c), and do not have following character simultaneously forming:

A92: ethanol: primary isoamyl alcohol=85: 6.5: 6.5 volume %

DVPE＝69.8kPa

0.5(RON+MON)＝90.3

A92: ethanol: isopropylcarbinol=80: 10: 10 volume %

DVPE＝67.5kPa

0.5(RON+MON)＝90.8

A92: ethanol: diethyl carbinol=85: 6.5: 6.5 volume %

DVPE＝69.6kPa

0.5(RON+MON)＝90.5

A92: ethanol: diisobutyl ketone=85.5: 7.5: 7 volume %

DVPE＝69.0kPa

0.5(RON+MON)＝90.0

A92: ethanol: diisobutyl ether=85: 8: 7 volume %

DVPE＝68.9kPa

0.5(RON+MON)＝90.1

A92: ethanol: di-n-butyl ester=85: 8: 7 volume %

DVPE＝68.5kPa

0.5(RON+MON)＝88.5

A92: ethanol: isobutyl acetate=88: 5: 7 volume %

DVPE＝69.5kPa

0.5(RON+MON)＝89.5

Following motor fuel composite proof does not always need and will exist the excessive DVPE of the motor spirit that causes to be reduced to the DVPE level of source gasoline owing to alcoholic acid.Following of some occasion needs it is adjusted to consistent with the requirement of the rule of existing corresponding gasoline.The DVPE level of summer gasoline is 70kPa.

A92: ethanol: isopropylcarbinol=87.5: 10: 7.5 volume %

DVPE＝70.0kPa

0.5(RON+MON)＝90.6

A92: ethanol: di-n-butyl ether=85: 9: 6 volume %

DVPE＝70.0kPa

0.5(RON+MON)＝89.2

A92: ethanol: diisobutyl ketone=85: 8: 7 volume %

DVPE＝70.0kPa

0.5(RON+MON)＝90.4

Fuel 2-3 contains summer gasoline A92 (a), ethanol (b), oxygenated additive (c) and C ₆-C ₁₂Hydrocarbon (d), and do not have following character simultaneously forming:

A92: ethanol: methyl ethyl ketone: octane-iso=80: 9.5: 0.5: 10 volume %

DVPE＝69.0kPa

0.5(RON+MON)＝91.0

A92: ethanol: isopropylcarbinol: octane-iso=80: 9.5: 0.5: 10 volume %

DVPE＝69.0kPa

0.5(RON+MON)＝91.1

A92: ethanol: isopropylcarbinol: isononane=80: 9.5: 0.5: 10 volume %

DVPE＝68.8kPa

0.5(RON+MON)＝91.0

A92: ethanol: isopropylcarbinol: isodecane=80: 9.5: 0.5: 10 volume %

DVPE＝68.5kPa

0.5(RON+MON)＝90.8

A92: ethanol: isopropylcarbinol: isooctene=80: 9.5: 0.5: 10 volume %

DVPE＝68.9kPa

0.5(RON+MON)＝91.2

A92: ethanol: isopropylcarbinol: toluene=80: 9.5: 0.5: 10 volume %

DVPE＝68.5kPa

0.5(RON+MON)＝91.4

A92: ethanol: isopropylcarbinol: petroleum naphtha=80: 9.5: 0.5: 10 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝67.5kPa

0.5(RON+MON)＝90.4

A92: ethanol: isopropylcarbinol: petroleum naphtha: toluene=80: 9.5: 0.5: 5: 5 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝67.5kPa

0.5(RON+MON)＝90.9

A92: ethanol: isopropylcarbinol: petroleum naphtha: isopropyl toluene=80: 9.5: 0.5: 5: 5 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝67.5kPa

0.5(RON+MON)＝91.2

A92: ethanol: isopropylcarbinol: isodecane=82.5: 9.5: 0.5: 7.5 volume %

DVPE＝70.0kPa

0.5(RON+MON)＝90.85

A92: ethanol: isopropylcarbinol: tert.-butylbenzene=82.5: 9.5: 0.5: 7.5 volume %

DVPE＝70.0kPa

0.5(RON+MON)＝91.5

A92: ethanol: isopropylcarbinol: primary isoamyl alcohol: petroleum naphtha: 4-tert-butyltoluene=82.5: 9.2: 0.2: 0.6: 5: 2.5 volume %

DVPE＝70.0kPa

0.5(RON+MON)＝91.1

Following fuel 2-5 and the possibility of 2-6 proof to regulating based on the dry blowing vapour pressure equivalent (DVPE) that contains ethanol engine fuel of summer gasoline A98.

Summer gasoline A98 has following character:

DVPE＝69.5kPa

Anti-knock index 0.5 (RON+MON)=92.5

Contrast fuel 2-4 contains summer gasoline A98 and ethanol, and does not have following character simultaneously at composition:

A98: ethanol=95: 5 volume %

DVPE＝76.5kPa

0.5(RON+MON)＝93.3

A98: ethanol=90: 10 volume %

DVPE＝76.0kPa

0.5(RON+MON)＝93.7

Fuel 2-5 contains summer gasoline A98 (a), ethanol (b) and oxygenated additive (c), and do not have following character simultaneously forming:

A98: ethanol: isopropylcarbinol=85: 7.5: 7.5 volume %

DVPE＝69.5kPa

0.5(RON+MON)＝93.5

A98: ethanol: diisobutyl ketone=83: 9.5: 7.5 volume %

DVPE＝69.0kPa

0.5(RON+MON)＝93.9

A98: ethanol: isobutyl acetate=88: 5: 7 volume %

DVPE＝69.5kPa

0.5(RON+MON)＝93.4

A98: ethanol: isopropylcarbinol=85: 8: 7 volume %

DVPE＝70.0kPa

0.5(RON+MON)＝93.7

A98: ethanol: tertiary amyl alcohol=90: 5: 5 volume %

DVPE＝70.0kPa

0.5(RON+MON)＝93.8

Fuel 2-6 contains summer gasoline A98 (a), ethanol (b), oxygenated additive (c) and C ₆-C ₁₂Hydrocarbon (d), and do not have following character simultaneously forming:

A98: ethanol: isopropylcarbinol: octane-iso=80: 9.5: 0.5: 10 volume %

DVPE＝69.0kPa

0.5(RON+MON)＝93.7

A98: ethanol: Virahol: alkylbenzene=80: 5: 5: 10 volume %

DVPE＝68.5kPa

0.5(RON+MON)＝94.0

A98: ethanol: isopropylcarbinol: octane-iso=81.5: 9.5: 0.5: 8.5 volume %

DVPE＝70.0kPa

0.5(RON+MON)＝93.5

A98: ethanol: the trimethyl carbinol: 1,8 terpadiene=86: 7: 4: 4 volume %

DVPE＝70.0kPa

0.5(RON+MON)＝93.6

The possibility of following fuel 2-8 to 2-10 proof to regulating based on the dry blowing vapour pressure equivalent (DVPE) that contains ethanol engine fuel of summer gasoline A95.

Summer gasoline A95 has following character:

DVPE＝68.5kPa

Anti-knock index 0.5 (RON+MON)=89.8

According to method above the test that summer gasoline A95 carries out is shown below the result:

CO (carbon monoxide) 2.198g/km;

HC (hydrocarbon) 0.245g/km;

NO _x(oxynitride) 0.252g/km;

CO ₂(carbonic acid gas) 230.0g/km;

NMHC ^* 0.238g/km；

Fuel consumption, F _c, l/100km 9.95

* non-methane hydrocarbon.

Contrast fuel 2-7 contains summer gasoline A95 and ethanol, and does not have following character simultaneously at composition:

A95: ethanol=95: 5 volume %

DVPE＝75.5kPa

0.5(RON+MON)＝90.9

A95: ethanol=90: 10 volume % (hereinafter referred to as RFM2)

DVPE＝75.0kPa

0.5(RON+MON)＝92.25

The test carried out shows below the result to contrast fuel mixture (RFM2), than summer gasoline A95:

CO -9.1％；

HC -4.5％；

NO _x +7.3％；

CO ₂ +4.0％；

NMHC ^* -4.4％；

Fuel consumption, F _c, l/100km+3.6%

Fuel 2-8 contains summer gasoline A95 and oxygenated additive and does not have following character simultaneously forming:

A95: ethanol: primary isoamyl alcohol=85: 7.5: 7.5 volume %

DVPE＝68.5kPa

0.5(RON+MON)＝92.2

A95: ethanol: diisoamyl ether=86: 8: 6 volume %

DVPE＝66.5kPa

0.5(RON+MON)＝90.2

A95: ethanol: isobutyl acetate=88: 5: 7 volume %

DVPE＝67.0kPa

0.5(RON+MON)＝92.0

A95: ethanol: the trimethyl carbinol=88: 5: 7 volume %

DVPE＝68.4kPa

0.5(RON+MON)＝92.6

A95: ethanol: tertiary amyl alcohol=90: 5: 5 volume %

DVPE＝68.5kPa

0.5(RON+MON)＝92.2

A95: ethanol: Virahol=80: 10: 10 volume %

DVPE＝68.5kPa

0.5(RON+MON)＝92.8

A95: ethanol: 4-methyl-2-amylalcohol=85: 8: 7 volume %

DVPE＝66.0kPa

0.5(RON+MON)＝91.0

A95: ethanol: diethyl ketone=85: 8: 7 volume %

DVPE＝68.0kPa

0.5(RON+MON)＝92.2

A95: ethanol: trimethylcyclohexanone=85: 8: 7 volume %

DVPE＝67.0kPa

0.5(RON+MON)＝91.8

A95: ethanol: tert amyl methyl ether(TAME)=80: 8: 12 volume %

DVPE＝68.0kPa

0.5(RON+MON)＝93.8

A95: ethanol: n-butyl acetate=87: 6.5: 6.5 volume %

DVPE＝68.0kPa

0.5(RON+MON)＝90.1

A95: ethanol: isobutyl isobutyrate=90: 5: 5 volume %

DVPE＝68.5kPa

0.5(RON+MON)＝90.0

A95: ethanol: methyl acetoacetate=85: 7: 8 volume %

DVPE＝68.5kPa

0.5(RON+MON)＝89.9

Following motor fuel composite proof does not always need and will exist the excessive DVPE of the motor spirit that causes to be reduced to the DVPE level of source gasoline owing to alcoholic acid.Usually, this is needs when the DVPE of source gasoline value is higher than the rule limits of existing corresponding gasoline.The DVPE level of summer gasoline is 70kPa.

A95: ethanol: 4-methyl-2-amylalcohol=85: 10: 5 volume %

DVPE＝70.0kPa

0.5(RON+MON)＝91.6

A95: ethanol: isobutyl isobutyrate=90: 6: 4 volume %

DVPE＝70.0kPa

0.5(RON+MON)＝90.5

Fuel 2-9 contains summer gasoline A95 (a), ethanol (b), oxygenated additive (c) and C ₆-C ₁₂Hydrocarbon (d), and do not have following character simultaneously forming:

A95: ethanol: tertiary amyl alcohol: alkylbenzene=80: 7: 4: 9 volume %

DVPE＝67.5kPa

0.5(RON+MON)＝93.6

A95: ethanol: the trimethyl carbinol: alkylbenzene=80: 7: 4: 9 volume %

DVPE＝68.0kPa

0.5(RON+MON)＝93.8

A95: ethanol: propyl alcohol: dimethylbenzene=80: 9.5: 0.5: 10 volume %

DVPE＝68.0kPa

0.5(RON+MON)＝93.1

A95: ethanol: diethyl ketone: dimethylbenzene=80: 9.5: 0.5: 10 volume %

DVPE＝68.0kPa

0.5(RON+MON)＝93.2

A95: ethanol: isopropylcarbinol: petroleum naphtha: isopropyl toluene=80: 9.5: 0.5: 5: 5 volume %

The petroleum naphtha boiling point is 100-170 ℃

DVPE＝68.0kPa

0.5(RON+MON)＝92.4

A95: ethanol: isopropylcarbinol: petroleum naphtha: alkylide=80: 9.5: 0.5: 5: 5 volume %

The petroleum naphtha boiling point is 100-170 ℃

The alkylide boiling point is 100-130 ℃

DVPE＝68.5kPa

0.5(RON+MON)＝92.2

A95: ethanol: isopropylcarbinol: primary isoamyl alcohol: dimethylbenzene=82.5: 9.2: 0.2: 0.6: 7.5 volume %

DVPE＝70.0kPa

0.5(RON+MON)＝93.0

A95: ethanol: isopropylcarbinol: primary isoamyl alcohol: cyclooctadiene=82.5: 9.2: 0.2: 0.6: 7.5 volume %

DVPE＝70.0kPa

0.5(RON+MON)＝92.1

Combusting preparation 2-10 contains the summer gasoline A95 of 81.5 volume %, between 8.5 volume %-isopropyl toluene, the ethanol of 9.2 volume %, the primary isoamyl alcohol of 0.8 volume %.2-10 tests proof to combusting preparation, compare with alcoholic acid mixture RFM2 with gasoline, how, the present composition can remain on dry blowing vapour pressure equivalent on the level identical with source gasoline in boosting of octane rating, reduces the level of toxic substance quantity discharged in the tail gas simultaneously and reduces fuel consumption.Combusting preparation 2-10 has following character:

Density in the time of 15 ℃ is according to ASTM D 4052 754.1kg/m3;

Initial boiling point is according to 86 26.6 ℃ of ASTM D;

-70 ℃ of 45.2 volume % of the part of can vaporizing;

-100 ℃ of 56.4 volume % of the part of can vaporizing;

-150 ℃ of 88.8 volume % of the part of can vaporizing;

-180 ℃ of 97.6 volume % of the part of can vaporizing;

186.3 ℃ of full boiling points

Vaporization resistates 1.6 volume %;

Vaporization loss 0.1 volume %;

Oxygen level is according to ASTM D 4815 3.56%w/w;

Acidity value, according to ASTM D 1613, wt%HAC 0.007;

PH is according to ASTM D 1,287 8.9;

Sulphur content is according to ASTM D 5453 16mg/kg;

Gum level is according to ASTM D 381＜1mg/100ml;

Water-content is according to ASTM D6304 0.12%w/w;

Aromatic hydrocarbons according to SS 155120, comprises benzene 30.3 volume %;

Benzene, single meter is according to EN238 0.8 volume %;

DVPE is according to ASTM D 5191 68.5kPa;

Anti-knock index 0.5 (RON+MON) is according to ASTM D

2699-86 and ASTM D 2700-86 92.7

The test of motor spirit preparation 2-10 being carried out according to above-mentioned standard method of test EU2000NEDC EC98/69, and prove the result in mode with respect to source gasoline A95 in summer (+) or (-) %:

CO -0.18％；

HC -8.5％；

NO _x +5.3％；

CO ₂ +2.8％；

NMHC -9％；

Fuel consumption, F _c, l/100km+3.2%

Combusting preparation 2-1 to 2-10 shows that the DVPE value that contains ethanol engine fuel based on summer grade gasoline with respect to test reduces.When with the additive among other oxygenatedchemicals alternate embodiments 2-1 to 2-10 of the present invention, can obtain similar result.

For preparing the combusting preparation 2-1 to 2-10 of all these above-mentioned motor fuel composites, at first gasoline is mixed and in this mixture, adds corresponding oxygenated additive with ethanol.Then allowing the gained motor fuel composite being not less than under-35 ℃ of conditions before test placed 1 to 24 hour.Any mixing equipment is not used in the preparation of all above-mentioned preparations.

Finished and used the additive agent mixture that contains ethanol and be different from the alcoholic acid oxygenatedchemicals to prepare to contain ethanol petrol with summer grade gasoline.Following fuel composition proof is met the standard-required of summer grade gasoline, comprises that vapour pressure is not higher than the possibility that contains ethanol petrol of 70kPa.

Fig. 2 shows and will contain 35 volume % ethanol, and 5 volume % primary isoamyl alcohol and 60% boiling point are the mixture 3 of 110-170 ℃ petroleum naphtha when mixing with summer gasoline A95, the funtcional relationship of dry blowing vapour pressure equivalent (DVPE) and ethanol content.Fig. 2 proof can't make the vapour pressure of these compositions be increased to be higher than the required standard DVPE value that reaches of summer grade gasoline, i.e. 70kPa when ethanol content in the gasoline is changed in the 0-20% scope.

Contain 35 volume % ethanol for having sneaked into, 5 volume % primary isoamyl alcohol and 60 volume % boiling points are the summer gasoline A92 and the A98 of additive agent mixture of 110-170 ℃ petroleum naphtha, also observe similar DVPE characteristic.

It is very important being used for preparing additive agent mixture ethanol that contains ethanol petrol and the ratio that is different from the alcoholic acid oxygenatedchemicals.Ratio allows to regulate the vapour pressure that contains ethanol petrol between the binder component that the present invention determines in wide range.

Following composition has proved the possibility of using the additive agent mixture with high and low ethanol content.One additive agent mixture contains 92 volume % ethanol, 6 volume % primary isoamyl alcohol and 2 volume % isopropylcarbinols, and it mixes with summer grade gasoline.Resulting composition has following character:

A92: ethanol: primary isoamyl alcohol: isopropylcarbinol=80: 18.4: 1.2: 0.4 volume %

DVPE＝70.0kPa

0.5(RON+MON)＝90.3

A95: ethanol: primary isoamyl alcohol: isopropylcarbinol=82: 16.56: 1.08: 0.36 volume %

DVPE＝69.9kPa

0.5(RON+MON)＝92.6

A98: ethanol: primary isoamyl alcohol: isopropylcarbinol=78: 20.24: 1.32: 0.44 volume %

DVPE＝70.0kPa

0.5(RON+MON)＝94.5

One additive agent mixture contains 25 volume % ethanol, 60 volume % primary isoamyl alcohol and 15 volume % isopropylcarbinols, and it mixes with summer grade gasoline.Resulting composition has following character:

A92: ethanol: primary isoamyl alcohol: isopropylcarbinol=80: 5: 12: 3 volume %

DVPE＝66.0kPa

0.5(RON+MON)＝88.6

A95: ethanol: primary isoamyl alcohol: isopropylcarbinol=84: 4: 9.6: 2.4 volume %

DVPE＝65.5kPa

0.5(RON+MON)＝91.3

A98: ethanol: primary isoamyl alcohol: isopropylcarbinol=86: 3.5: 8.4: 2.1 volume %

DVPE＝65.0kPa

0.5(RON+MON)＝93.0

As other oxygenatedchemicalss of the present invention (c) and C ₆-C ₁₂The ratio that hydrocarbon (d) is determined according to the present invention is used with the preparation additive agent mixture, this mixture is used for preparing when containing ethanol petrol then, obtains similar result.These gasoline meet the requirement of the motor spirit that is used for the standard spark ignition engines fully.

In addition, according to ratio of the present invention contain ethanol and the additive agent mixture that is different from the alcoholic acid oxygenatedchemicals of the present invention can be used alone as motor spirit, this engine be fit to use ethanol work.

Embodiment 3

Embodiment 3 has proved when using dry blowing vapour pressure equivalent to be used as alkyl according to ASTM D-5191 survey as the gasoline of 48kPa (about 7psi), has reduced the normal possibility of dry blowing vapour pressure that contains ethanol engine fuel.

For preparing this composition mixture, used to meet USS and merge in the trade mark of the U.S. and be Phillips J Base Fuel, unleaded summer gasoline A92, A95 and the A98 of Union Clear Base and Indolene.

Source gasoline comprises aliphatic series and alicyclic C ₅-C ₁₂Hydrocarbon comprises saturated and unsaturated person.

Fig. 1 shows the DVPE character that contains ethanol engine fuel based on U.S. summer grade gasoline A92.The ethanol engine fuel that contains based on U.S. summer gasoline A95 and A98 has shown similar character respectively.

U.S. summer gasoline A92 has following character:

DVPE＝47.8kPa

Anti-knock index 0.5 (RON+MON)=87.7

Fuel 3-1 contains U.S. summer gasoline A92 and ethanol, and does not have following character simultaneously at composition:

A92: ethanol=95: 5 volume %

DVPE＝55.9kPa

0.5(RON+MON)＝89.0

A92: ethanol=90: 10 volume %

DVPE＝55.4kPa

0.5(RON+MON)＝90.1

Fuel 3-2 contains U.S. summer gasoline A92, ethanol and oxygenated additive, and do not have following character simultaneously forming:

A92: ethanol: primary isoamyl alcohol=83: 8.5: 8.5 volume %

DVPE＝47.5kPa

0.5(RON+MON)＝89.6

A92: ethanol: isoamyl propionate=82: 8: 10 volume %

DVPE＝47.0kPa

0.5(RON+MON)＝89.9

A92: ethanol: 2-Ethyl Hexanol=82: 8: 10 volume %

DVPE＝47.8kPa

0.5(RON+MON)＝89.2

A92: ethanol: tetrahydrofurfuryl alcohol=82: 7: 10 volume %

DVPE＝47.8kPa

0.5(RON+MON)＝89.3

A92: ethanol: pimelinketone=82: 7: 10 volume %

DVPE＝47.7kPa

0.5(RON+MON)＝89.1

A92: ethanol: anisole=80: 8.5: 11.5 volume %

DVPE＝46.8kPa

0.5(RON+MON)＝90.6

A92: ethanol: methoxy toluene=82: 8: 10 volume %

DVPE＝46.5kPa0.5(RON+MON)＝90.8

A92: ethanol: methyl benzoate=82: 8: 10 volume %

DVPE＝46.0kPa0.5(RON+MON)＝90.5

Following motor fuel composite proof does not always need and will exist the excessive DVPE of the motor spirit that causes to be reduced to the DVPE level of source gasoline owing to alcoholic acid.Following of some occasion needs it is adjusted to consistent with the requirement of the rule of existing corresponding gasoline.The DVPE level of U.S.'s summer grade gasoline is 7psi, and it is equivalent to 48.28kPa.

A92: ethanol: primary isoamyl alcohol=83: 9: 8 volume %

DVPE＝48.2kPa

0.5(RON+MON)＝89.8

A92: ethanol: methoxy toluene=84: 8: 8 volume %

DVPE＝48.2kPa

0.5(RON+MON)＝90.5

A92: ethanol: methyl benzoate=85: 8: 7 volume %

DVPE＝48.2kPa

0.5(RON+MON)＝90.1

Fuel 3-3 contains U.S. summer gasoline A92 (a), ethanol (b), oxygenated additive (c) and C ₆-C ₁₂Hydrocarbon (d), and do not have following character simultaneously forming:

A92: ethanol: primary isoamyl alcohol: isopropylcarbinol: petroleum naphtha=75: 9.2: 0.3: 0.1: 15.4 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝47.8kPa

0.5(RON+MON)＝89.5

A92: ethanol: primary isoamyl alcohol: isopropylcarbinol :-isopropyl toluene=75: 9.2: 0.3: 0.1: 15.4 volume %

DVPE＝47.0kPa

0.5(RON+MON)＝90.5

A92: ethanol: primary isoamyl alcohol: isopropylcarbinol: octane-iso=75: 9.2: 0.3: 0.1: 15.4 volume %

DVPE＝47.8kPa

0.5(RON+MON)＝90.3

A92: ethanol: primary isoamyl alcohol: isopropylcarbinol: petroleum naphtha=76: 9.2: 0.3: 0.1: 14.4 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝48.2kPa

0.5(RON+MON)＝89.6

A92: ethanol: primary isoamyl alcohol: isopropylcarbinol: petroleum naphtha: octane-iso=76: 9.2: 0.3: 0.1: 10.4: 4 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝48.2kPa

0.5(RON+MON)＝89.8

A92: ethanol: primary isoamyl alcohol: isopropylcarbinol: petroleum naphtha :-isopropyl toluene=77: 9.2: 0.3: 0.1: 10.4: 3 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝48.2kPa

0.5(RON+MON)＝89.9

The possibility of following fuel proof to regulating based on the dry blowing vapour pressure equivalent (DVPE) that contains ethanol engine fuel of U.S. summer gasoline A98.

U.S. gasoline A98 has following character:

DVPE＝48.2kPa

Anti-knock index 0.5 (RON+MON)=92.2

Contrast fuel 3-4 contains U.S. summer gasoline A98 and ethanol, and does not have following character simultaneously at composition:

A98: ethanol=95: 5 volume %

DVPE＝56.3kPa

0.5(RON+MON)＝93.0

A98: ethanol=90: 10 volume %

DVPE＝55.8kPa

0.5(RON+MON)＝93.6

Fuel 3-5 contains U.S. summer gasoline A98 (a), ethanol (b) and oxygenated additive (c), and do not have following character simultaneously forming:

A98: ethanol: primary isoamyl alcohol=82.5: 9: 8.5 volume %

DVPE＝48.2kPa

0.5(RON+MON)＝93.3

A98: ethanol: primary isoamyl alcohol: isopropylcarbinol=82.5: 9: 7: 1.5 volume %

DVPE＝48.2kPa

0.5(RON+MON)＝93.4

A98: ethanol: tetrahydrofurfuryl alcohol=80: 10: 10 volume %

DVPE＝48.0kPa

0.5(RON+MON)＝93.7

Fuel 3-6 contains U.S. summer gasoline A98 (a), ethanol (b) and oxygenated additive (c) and C ₆-C ₁₂Hydrocarbon (d), and do not have following character simultaneously forming:

A98: ethanol: primary isoamyl alcohol: isopropylcarbinol: petroleum naphtha=75: 9.2: 0.3: 0.1: 15.4 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝48.2kPa

0.5(RON+MON)＝93.3

A98: ethanol: primary isoamyl alcohol: isopropylcarbinol: octane-iso=75: 9.2: 0.3: 0.1: 15.4 volume %

DVPE＝48.2kPa

0.5(RON+MON)＝93.9

A98: ethanol: primary isoamyl alcohol: isopropylcarbinol :-isopropyl toluene=75.5: 9.2: 0.3: 0.1: 14.9 volume %

DVPE＝47.5kPa

0.5(RON+MON)＝94.4

A98: ethanol: primary isoamyl alcohol: isopropylcarbinol: petroleum naphtha: octane-iso=75: 9.2: 0.3: 0.1: 8.4: 7 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝48.2kPa

0.5(RON+MON)＝93.6

A98: ethanol: primary isoamyl alcohol: isopropylcarbinol: petroleum naphtha :-isopropyl toluene=75: 9.2: 0.3: 0.1: 10.4: 5 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝48.0kPa

0.5(RON+MON)＝93.7

A98: ethanol: primary isoamyl alcohol: isopropylcarbinol: petroleum naphtha: alkylide=75: 9.2: 0.3: 0.1: 7.9: 7.5 volume %

The petroleum naphtha boiling point is 100-200 ℃

The alkylide boiling point is 100-130 ℃

DVPE＝48.2kPa

0.5(RON+MON)＝93.6

The possibility of following fuel proof to regulating based on the dry blowing vapour pressure equivalent (DVPE) that contains ethanol engine fuel of U.S. summer gasoline A95.

U.S. summer gasoline A95 has following character:

DVPE＝47.0kPa

Anti-knock index 0.5 (RON+MON)=90.9

U.S. summer gasoline A95 fuel is as a comparison used in test, test is carried out according to EU2000 NEDC EC98/69, test uses VOLVO 240 DL in 1987 to carry out, it is B230F, 4 cylinders produce 83KW power and produce 2.32 liters of engines (No.LG4F20-87) of 185Nm moment of torsion in the time of 46 revolutions per seconds in the time of 90 revolutions per seconds.

The performance test of as above carrying out U.S. summer gasoline A95 proves following result:

CO (carbon monoxide) 2.406g/km;

HC (hydrocarbon) 0.356g/km;

NO _x(oxynitride) 0.278g/km;

CO ₂(carbonic acid gas) 232.6g/km;

NMHC ^* 0.258g/km；

Fuel consumption, F _c, l/100km 9.93

* non-methane hydrocarbon.

Contrast fuel 3-7 contains U.S. summer gasoline A95 and ethanol, and does not have following character simultaneously at composition:

A95: ethanol=95: 5 volume %

DVPE＝55.3kPa

0.5(RON+MON)＝91.5

A95: ethanol=90: 10 volume %

DVPE＝54.8kPa

0.5(RON+MON)＝92.0

Test containing 90 volume % U.S. summer grade gasoline A95 and 10 volume % alcoholic acid contrast gasoline-alcohol mixtures (RFM3), test uses VOLVO 240 DL in 1987 to carry out, it is B230F, 4 cylinders, 2.32 rise engine (No.LG4F20-87), test is carried out according to EU2000NEDC EC 98/69, shows below the result, and it is than summer gasoline A95:

CO -12.5％；

HC -4.8％；

NO _x +2.3％；

CO ₂ +3.7％；

NMHC -4.0％；

Fuel consumption, F _c, l/100km+3.1%

Fuel 3-8 contains U.S. summer gasoline A95, ethanol and oxygenated additive, and do not have following character simultaneously forming:

A95: ethanol: primary isoamyl alcohol=83: 8.5: 8.5 volume %

DVPE＝47.0kPa

0.5(RON+MON)＝91.7

A95: ethanol: n-amyl acetate=80: 10: 10 volume %

DVPE＝47.0kPa

0.5(RON+MON)＝91.8

A95: ethanol: hexalin acetate=80: 10: 10 volume %

DVPE＝46.7kPa

0.5(RON+MON)＝92.0

A95: ethanol: tetramethyl-tetrahydrofuran (THF)=80: 12: 8 volume %

DVPE＝47.0kPa

0.5(RON+MON)＝92.6

A95: ethanol: methyl tetrahydropyrans=80: 15: 5 volume %

DVPE＝46.8kPa

0.5(RON+MON)＝92.5

A95: ethanol: primary isoamyl alcohol=84: 8.5: 7.5 volume %

DVPE＝48.2kPa

0.5(RON+MON)＝91.7

A95: ethanol: phenylacetate=82.5: 10: 7.5 volume %

DVPE＝48.2kPa

0.5(RON+MON)＝92.3

A95: ethanol: tetramethyl-tetrahydrofuran (THF)=81: 10: 9 volume %

DVPE＝48.2kPa

0.5(RON+MON)＝92.2

Fuel 3-9 contains U.S. summer gasoline A95 (a), ethanol (b), oxygenated additive (c) and C ₆-C ₁₂Hydrocarbon (d), and do not have following character simultaneously forming:

A95: ethanol: primary isoamyl alcohol: isopropylcarbinol: petroleum naphtha=75: 9.2: 0.3: 0.1: 15.4 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝47.0kPa

0.5(RON+MON)＝91.6

A95: ethanol: primary isoamyl alcohol: isopropylcarbinol: octane-iso=75: 9.2: 0.3: 0.1: 15.4 volume %

DVPE＝47.0kPa

0.5(RON+MON)＝92.2

A95: ethanol: primary isoamyl alcohol: isopropylcarbinol :-isopropyl toluene=75: 9.2: 0.3: 0.1: 15.4 volume %

DVPE＝46.8kPa

0.5(RON+MON)＝93.0

A95: ethanol: tetrahydrofurfuryl alcohol: cyclooctatetraene=80: 9.5: 0.5: 10 volume %

DVPE＝46.6kPa

0.5(RON+MON)＝92.5

A95: ethanol: 4-methyl-4-oxygen tetrahydropyrans: other cymene=80: 9.5: 0.5: 10 volume %

DVPE＝46.7kPa

0.5(RON+MON)＝92.1

A95: ethanol: primary isoamyl alcohol: isopropylcarbinol: petroleum naphtha=76.5: 9.2: 0.3: 0.1: 7: 6.9 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝48.2kPa

0.5(RON+MON)＝91.7

A95: ethanol: primary isoamyl alcohol: isopropylcarbinol: petroleum naphtha: octane-iso=76.5: 9.2: 0.3: 0.1: 7: 6.9 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝48.2kPa

0.5(RON+MON)＝92.2

A95: ethanol: primary isoamyl alcohol: isopropylcarbinol :-isopropyl toluene=77: 9.2: 0.3: 0.1: 13.4 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝48.2kPa

0.5(RON+MON)＝92.9

Combusting preparation 3-10 contains the U.S. summer gasoline A95 of 76 volume %, and the ethanol of 9.2 volume %, the primary isoamyl alcohol of 0.25 volume %, 0.05% isopropylcarbinol, the boiling point of 11.5 volume % are 100-200 ℃ petroleum naphtha and the isopropyl toluene of 3 volume %.The test that combusting preparation 3-10 is carried out proves that how the present invention makes contains the requirement that ethanol petrol conforms to current standards fully, at first is the DVPE level and also has other parameters.This gasoline also can guarantee to compare with mixture RFM3 (U.S. summer gasoline A95 and 10% alcoholic acid mixture) simultaneously, and the level of toxic substance quantity discharged reduces and the fuel consumption reduction in the tail gas.Combusting preparation 3-10 has following character:

Density in the time of 15 ℃ is according to ASTM D 4052 774.9kg/m3;

Initial boiling point is according to 86 36.1 ℃ of ASTM D;

-70 ℃ of 33.6 volume % of the part of can vaporizing;

The part of can vaporizing-100 50.8 volume %;

-150 ℃ of 86.1 volume % of the part of can vaporizing;

-180 ℃ of 97.0 volume % of the part of can vaporizing;

204.8 ℃ of full boiling points;

Vaporization resistates 1.5 volume %;

Vaporization loss 1.5 volume %;

Oxygen level is according to ASTM D 4815 3.37%w/w;

Acidity value, according to ASTM D 1613, wt%HAC 0.007;

PH is according to ASTM D 1,287 7.58;

Sulphur content is according to ASTM D 5453 47mg/kg;

Gum level is according to ASTM D 381 2.8mg/100ml;

Water-content is according to ASTM D6304 0.02%w/w;

Aromatic hydrocarbons according to SS 155120, comprises benzene 31.2 volume %;

Benzene, single meter is according to EN238 0.7 volume %;

DVPE is according to ASTM D 5191 48.0kPa;

Anti-knock index 0.5 (RON+MON) is according to ASTM D

2699-86 and ASTM D 2700-86 92.2

3-10 tests to the motor spirit preparation, test uses a VOLVO 240DL in 1987 to carry out, it is B230F, 4 cylinders, 2.32 rise engine (No.LG4F20-87), test is carried out according to aforesaid testing method EU2000 NEDC EC 98/69, and proves the result in the mode with respect to U.S. summer gasoline A95 (+) or (-) %:

CO -15.1％；

HC -5.6％；

NO _x +0.5％；

CO ₂No change

NMHC -4.5％；

Fuel consumption, F _c, the l/100km no change

Can obtain similar result when substituting the oxygenatedchemicals of being tested with other oxygenatedchemicalss.

For preparing above-mentioned all combusting preparations, at first U.S.'s summer gasoline mixes and adds corresponding oxygenated additive in this fuel mixture with ethanol.Then allowing the gained motor fuel composite being not less than under-35 ℃ of conditions before test placed 1 to 24 hour.Any mixing equipment is not used in the preparation of all above-mentioned preparations.

Determined to use the additive agent mixture that contains ethanol and be different from the alcoholic acid oxygenatedchemicals to contain the possibility of the vapour pressure of ethanol engine fuel with adjusting, this fuel is based on summer grade gasoline, meet USS and be used for the standard spark-ignition internal combustion engine.In the additive agent mixture composition, add C ₈-C ₁₂Hydrocarbon can improve additive and reduce owing to introduce the efficient of the low effect of steam drop of the excess steam pressure that ethanol caused in the gasoline.

The ethanol that contains 60 volume %, the additive agent mixture of the isopropylcarbinol of the primary isoamyl alcohol of 32 volume % and 8 volume % is not higher than 7psi according to different ratios and dry blowing vapour pressure equivalent (DVPE), and the U.S.'s summer grade gasoline that is equivalent to 48.28kPa mixes.

Resulting composition has following character:

A92: ethanol: primary isoamyl alcohol: isopropylcarbinol=87.5: 7.5: 4: 1 volume %

DVPE＝51.7kPa

0.5(RON+MON)＝89.7

A95: ethanol: primary isoamyl alcohol: isopropylcarbinol=85: 9: 4.8: 1.2 volume %

DVPE＝51.0kPa

0.5(RON+MON)＝91.8

A98: ethanol: primary isoamyl alcohol: isopropylcarbinol=80: 12: 6.4: 1.6 volume %

DVPE＝52.0kPa

0.5(RON+MON)＝93.5

Above example proof part reduces excess steam presses, i.e. about 50% of the excess steam pressure that is caused by alcoholic acid existence in the mixture possibility.

One additive agent mixture contains 50 volume % ethanol and 50 volume % methyl iso-butyl ketone (MIBK), and it is not higher than 7psi with dry blowing vapour pressure equivalent (DVPE) in varing proportions, is equivalent to 48.28kPa U.S. summer grade gasoline and mixes.Resulting composition has following character:

A92: ethanol: methyl iso-butyl ketone (MIBK)=85: 7.5: 7.5 volume %

DVPE＝49.4kPa

0.5(RON+MON)＝90.0

A95: ethanol: methyl iso-butyl ketone (MIBK)=84: 8: 8 volume %

DVPE＝48.6kPa

0.5(RON+MON)＝91.7

A98: ethanol: methyl iso-butyl ketone (MIBK)=82: 9: 9 volume %

DVPE＝49.7kPa

0.5(RON+MON)＝93.9

Above example proof part reduces excess steam presses, i.e. about 80% of the excess steam pressure that is caused by alcoholic acid existence in the mixture possibility.

Fig. 2 shows and will contain 35% ethanol, 1 volume % primary isoamyl alcohol, 0.2 volume % isopropylcarbinol, 43.8 volume % boiling point is 100-170 ℃ a petroleum naphtha, when mixing with U.S. summer gasoline A92 with the mixture 4 of 20 volume % isopropyl toluenes, the funtcional relationship of dry blowing vapour pressure equivalent (DVPE) and ethanol content.

Fig. 2 proof contains can make when using this additive agent mixture in the ethanol petrol by alcoholic acid in modulation and exists and the excess steam pressure drop that causes is low surpasses 100%.

As U.S. summer grade gasoline A95 and A98 and contain 35% ethanol, 1 volume % primary isoamyl alcohol, 0.2 volume % isopropylcarbinol, 43.8 volume % boiling points are 100-170 ℃ petroleum naphtha, observe similar result when mixing with the mixture of 20 volume % isopropyl toluenes.

As other oxygenatedchemicalss and C of the present invention ₆-C ₁₂The ratio that hydrocarbon is set up according to the present invention is used with the modulation additive agent mixture, this mixture is used for preparing when containing ethanol petrol then, obtains similar result.These gasoline meet the requirement of the motor spirit that is used for the standard spark ignition engines fully.

In addition, the ethanol that contains according to ratio of the present invention is different from the alcoholic acid oxygenatedchemicals, and C ₆-C ₁₂The additive agent mixture of hydrocarbon can be used alone as motor spirit, and this engine can be worked with ethanol.

Embodiment 4

Embodiment 4 has proved when the fuel alkyl is surveyed to the non-standard gasoline of 110kPa (about 16psi) by dry blowing vapour pressure equivalent according to ASTM D-5191, reduces the normal possibility of dry blowing vapour pressure that contains ethanol engine fuel.

For preparing this composition mixture, used present commercially available purchasing in Shell, Statoil, the gasoline A92 in unleaded winter of Q8OK and Preem, A95 and A98 and purchase airsetting thing (GK) in Muscovite Gazprom in Sweden.

The hydrocarbon component (HCC) that is used for combusting preparation is by the gasoline A92 in winter with 85 volume %, and A95 or A98 and about 15 volume % airsetting thing hydrocarbon liquid (GC) are mixed with.

Be the hydrocarbon component (HCC) of the combusting preparation 4-1 to 4-10 for preparing this motor fuel composite, with the gasoline A92 in winter of about 85 volume %, A95 or A98 mix with airsetting thing hydrocarbon liquid (GC) earlier.Then gained hydrocarbon component (HCC) was placed 24 hours.Gained gasoline contains C ₃-C ₁₂Aliphatic series and alicyclic hydrocarbon comprise saturated and undersaturated.

Fig. 1 shows the DVPE character that contains ethanol engine fuel based on the gentle condensate of U.S. winter-grade gasoline A98.The ethanol engine fuel that contains based on U.S. gasoline in winter A92 and A98 and airsetting thing (GC) has shown similar character.

The gasoline that contains 85 volume % gasoline in winter A92 and 15 volume % airsetting things (GC) has following character:

DVPE＝110.0kPa

Anti-knock index 0.5 (RON+MON)=87.9

Contrast fuel 4-1 contains gasoline A92 in winter, airsetting thing (GC) and ethanol, and do not have following character simultaneously forming:

A92: GC: ethanol=80.75: 14.25: 5 volume %

DVPE＝115.5kPa

0.5(RON+MON)＝89.4

A92: GC: ethanol=76.5: 13.5: 10 volume %

DVPE＝115.0kPa

0.5(RON+MON)＝90.6

Fuel 4-2 of the present invention contains gasoline A92 in winter, airsetting thing (GC), and ethanol and oxygenated additive, and do not have following character simultaneously forming:

A92: GC: ethanol: primary isoamyl alcohol=74: 13: 6.5: 6.5 volume %

DVPE＝109.8kPa

0.5(RON+MON)＝90.35

A92: GC: ethanol: 2,5-dimethyl-tetrahydrofuran=68: 12: 10: 10 volume %

DVPE＝110.0kPa

0.5(RON+MON)＝90.75

A92: GC: ethanol: propyl alcohol=68: 12: 12: 8 volume %

DVPE＝109.5kPa

0.5(RON+MON)＝90.0

A92: GC: ethanol: two Diisopropylmethanols=72: 13: 7.5: 7.5 volume %

DVPE＝109.5kPa

0.5(RON+MON)＝90.0

A92: GC: ethanol: methyl phenyl ketone=72: 13: 9: 6 volume %

DVPE＝110.0kPa

0.5(RON+MON)＝90.8

A92: GC: ethanol: isobutyl propionate=75: 13: 5: 7 volume %

DVPE＝109.2kPa

0.5(RON+MON)＝90.0

Fuel 4-3 contains gasoline A92 in winter, airsetting thing (GC), ethanol, oxygenated additive and C ₆-C ₁₂Hydrocarbon, and do not have following character simultaneously forming:

A92: GC: ethanol: isopropylcarbinol: isopropyl benzene=68: 12: 9.5: 0.5: 10 volume %

DVPE＝108.5kPa

0.5(RON+MON)＝91.7

A92: GC: ethanol: tertiary butyl ethyl ether: petroleum naphtha=68: 12: 9.5: 0.5: 10 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝108.5kPa

0.5(RON+MON)＝90.6

A92: GC: ethanol: isopentyl methyl ether: toluene=68: 12: 9.5: 0.5: 10 volume %

DVPE＝107.5kPa

0.5(RON+MON)＝91.6

The present invention of following fuel composition proof is reduced to the excessive DVPE of non-standard gasoline the DVPE level of corresponding standard gasoline.The DVPE of standard gasoline in winter A92 is 90kPa.

A92: GC: ethanol: primary isoamyl alcohol: petroleum naphtha: alkylide=55: 10: 9.5: 0.5: 12.5: 12.5 volume %

The petroleum naphtha boiling point is 100-200 ℃

The alkylide boiling point is 100-130 ℃

DVPE＝90.0kPa

0.5(RON+MON)＝90.6

A92: GC: ethanol: primary isoamyl alcohol: petroleum naphtha: ethylbenzene=55: 10: 9.5: 0.5: 15: 10 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝89.8kPa

0.5(RON+MON)＝90.9

A92: GC: ethanol: primary isoamyl alcohol: petroleum naphtha: isopropyl toluene=55: 10: 9.5: 0.5: 20: 5 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝90.0kPa

0.5(RON+MON)＝90.6

Following composition proof is to the gasoline A98 and the dry blowing vapour pressure equivalent (DVPE) that contains the alcohol fuel mixture of the about 15 volume % airsetting things possibility of regulating in winter based on about 85 volume %.

The gasoline that contains 85 volume % gasoline in winter A98 and 15 volume % airsetting things (GC) has following character:

DVPE＝109.8kPa

Anti-knock index 0.5 (RON+MON)=92.0

Contrast fuel 4-4 contains gasoline A98 in winter, airsetting thing (GC) and ethanol, and do not have following character simultaneously forming:

A98: GC: ethanol=80.75: 14.25: 5 volume %

DVPE＝115.3kPa

0.5(RON+MON)＝93.1

A98: GC: ethanol=76.5: 13.5: 10 volume %

DVPE＝114.8kPa

0.5(RON+MON)＝94.0

Fuel 4-5 of the present invention contains gasoline A98 in winter, airsetting thing (GC) and oxygenated additive, and do not have following character simultaneously forming:

A98: GC: ethanol: primary isoamyl alcohol=74: 13: 6.5: 6.5 volume %

DVPE＝109.6kPa

0.5(RON+MON)＝93.3

A98: GC: ethanol: phenetole=72: 13: 7.5: 7.5 volume %

DVPE＝110.0kPa

0.5(RON+MON)＝94.0

A98: GC: ethanol: 3,3,5 trimethylcyclohexanones=72: 13: 7.5: 7.5 volume %

DVPE＝109.8kPa

0.5(RON+MON)＝93.3

Fuel 4-6 contains gasoline A98 in winter, airsetting thing, ethanol, oxygenated additive and C ₆-C ₁₂Hydrocarbon (d), and do not have following character simultaneously forming:

A98: GC: ethanol: primary isoamyl alcohol: isopropylcarbinol: petroleum naphtha=68: 12: 9.2: 0.6: 0.2: 10 volume %

The boiling point of petroleum naphtha is 100-200 ℃

DVPE＝107.4kPa

0.5(RON+MON)＝93.8

A98: GC: ethanol: ethyl isobutyl ether: Myrzene=72: 13: 9.5: 0.5: 5 volume %

DVPE＝110.0kPa

0.5(RON+MON)＝93.6

A98: GC: ethanol: isopropylcarbinol: octane-iso=68: 12: 5: 5: 10 volume %

DVPE＝102.5kPa

0.5(RON+MON)＝93.5

The present invention of following fuel composition proof is reduced to the excessive DVPE of non-standard gasoline the DVPE level of corresponding standard gasoline.The DVPE of standard gasoline in winter A98 is 90kPa.

The petroleum naphtha boiling point is 100-200 ℃

The alkylide boiling point is 100-130 ℃

DVPE＝89.8kPa

0.5(RON+MON)＝94.0

A92: GC: ethanol: primary isoamyl alcohol: petroleum naphtha: isopropyl benzene=55: 10: 9.5: 0.5: 15: 10 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝89.6kPa

0.5(RON+MON)＝94.2

A92: GC: ethanol: isopropylcarbinol: petroleum naphtha: isopropyl toluene=55: 10: 5: 5: 20: 5 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝88.5kPa

0.5(RON+MON)＝94.1

DVPE＝109.5kPa

Anti-knock index 0.5 (RON+MON)=90.2

The hydrocarbon component (HCC) that will contain 85 volume % gasoline in winter and 15 volume % airsetting things (GC) according to method is above tested as contrast fuel and is obtained following result:

CO 2.033g/km；

HC 0.279g/km；

NO _x 0.279g/km；

CO ₂ 229.5g/km；

NMHC 0.255g/km；

Fuel consumption, F _c, l/100km 9.89

Fuel 4-7 contains gasoline A95 in winter, airsetting thing (GC) and ethanol, and do not have following character simultaneously forming:

A95: GC: ethanol=80.75: 14.25: 5 volume %

DVPE＝115.0kPa

0.5(RON+MON)＝91.7

A95: GC: ethanol=76.5: 13.5: 10 volume %

DVPE＝114.5kPa

0.5(RON+MON)＝92.5

To containing 80.75 volume % gasoline in winter A95,14.25 volume % airsetting thing (GC) and 5 volume % alcoholic acid contrast fuel mixtures (RFM4) are tested with aforesaid method, and prove the result in the mode with respect to (+) or (-) % of the gasoline that contains 85 volume % gasoline in winter A95 and 15 volume % airsetting things (GC):

CO -6.98％；

HC -7.3％；

NO _x +12.1％；

CO ₂ +1.1％；

NMHC -5.3％；

Fuel consumption, F _c, l/100km+2.62%

Fuel 4-8 contains gasoline A95 in winter, airsetting thing (GC), and ethanol and oxygenated additive, and do not have following character simultaneously forming:

A95: GC: ethanol: primary isoamyl alcohol=74: 13: 6.5: 6.5 volume %

DVPE＝109.1kPa

0.5(RON+MON)＝92.0

A95: GC: ethanol: phenol=72: 13: 8: 7 volume %

DVPE＝107.5kPa

0.5(RON+MON)＝92.6

A95: GC: ethanol: phenylacetate=68: 12: 10: 10 volume %

DVPE＝106.0kPa

0.5(RON+MON)＝92.8

A95: GC: ethanol: 3-hydroxyl-2-butanone=68: 12: 10: 10 volume %

DVPE＝108.5kPa

0.5(RON+MON)＝91.6

A95: GC: ethanol: tert-butyl acetoacetate=68: 12: 10: 10 volume %

DVPE＝108.0kPa

0.5(RON+MON)＝92.2

A95: GC: ethanol: 3,3,3-trimethylcyclohexanone=71: 12: 9: 8 volume %

DVPE＝108.5kPa

0.5(RON+MON)＝91.6

Fuel 4-9 contains gasoline A95 in winter, airsetting thing, ethanol, oxygenated additive and C ₆-C ₁₂Hydrocarbon (d), and do not have following character simultaneously forming:

A95: GC: ethanol: primary isoamyl alcohol: isopropylcarbinol: petroleum naphtha=68: 12: 9.2: 0.6: 0.2: 10 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝107.0kPa

0.5(RON+MON)＝92.1

A95: GC: ethanol: isopropylcarbinol: cyclooctatetraene=72: 13: 9.5: 0.5: 5 volume %

DVPE＝108.5kPa

0.5(RON+MON)＝92.6

The present invention of following fuel composition proof is reduced to the excessive DVPE of non-standard gasoline the DVPE level of corresponding standard gasoline.The DVPE of standard gasoline in winter A95 is 90kPa.

A95: GC: ethanol: primary isoamyl alcohol: isopropylcarbinol: petroleum naphtha: alkylide=55: 10: 9.2: 0.6: 0.2: 12.5: 12.5 volume %

The petroleum naphtha boiling point is 100-200 ℃

The alkylide boiling point is 100-130 ℃

DVPE＝89.5kPa

0.5(RON+MON)＝92.4

A95: GC: ethanol: primary isoamyl alcohol: petroleum naphtha: tertiary butyl dimethylbenzene=55: 10: 9.5: 0.5: 20: 5 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝89.8kPa

0.5(RON+MON)＝92.5

A95: GC: ethanol: isopropylcarbinol: petroleum naphtha: isopropyl benzene=55: 10: 5: 5: 20: 5 volume %

The petroleum naphtha boiling point is 100-200 ℃

DVPE＝89.9kPa

0.5(RON+MON)＝92.2

Motor spirit 4-10 contains the gasoline A95 in winter of 55 volume %, the airsetting thing of 10 volume %, and the ethanol of 5 volume %, the trimethyl carbinol of 5 volume %, 20 volume % boiling points are 100-200 ℃ petroleum naphtha and the isopropyl toluene of 5 volume %.The test that combusting preparation 4-10 is carried out proves, how the present invention makes contains the requirement that the ethanol petrol preparation conforms to current standards fully, at first be the restriction of dry blowing vapour pressure equivalent, also have other parameters of fuel, even when the DVPE of source hydrocarbon component (HCC) is significantly higher than standard-required, also be like this.Simultaneously this contains ethanol petrol and compares with said mixture RFM4, and the level of toxic substance quantity discharged reduces and fuel consumption reduces in the tail gas.Combusting preparation 4-10 has following character:

Density in the time of 15 ℃ is according to ASTM D 4052 698.6kg/m3;

Initial boiling point is according to 86 20.5 ℃ of ASTM D;

-70 ℃ of 47.0 volume % of the part of can vaporizing;

-100 ℃ of 65.2 volume % of the part of can vaporizing;

-150 ℃ of 92.4 volume % of the part of can vaporizing;

-180 ℃ of 97.3 volume % of the part of can vaporizing;

189.9 ℃ of full boiling points

Vaporization resistates 0.5 volume %;

Vaporization loss 1.1 volume %;

Oxygen level is according to ASTM D 4815 3.2%w/w;

Acidity value, according to ASTM D 1613, wt%HAC 0.001;

PH is according to ASTM D 1,287 7.0;

Sulphur content is according to ASTM D 5453 18mg/kg;

Gum level is according to ASTM D 381 2mg/100ml;

Water-content is according to ASTM D6304 0.01%w/w;

Aromatic hydrocarbons according to SS 155120, comprises benzene 30.9 volume %;

Benzene, single meter is according to EN238 0.7 volume %;

DVPE is according to ASTM D 5191 90.0kPa;

Anti-knock index 0.5 (RON+MON) is according to ASTM D

2699-86 and ASTM D 2700-86 92.3

As stated above motor spirit preparation 4-10 is tested, and with respect to contain 85 volume % winter gasoline A95 and the mode of (+) or (-) % of the result of the motor spirit of the airsetting thing of 15 volume % prove the result:

CO -14.0％；

HC -8.6％；

NO _xNo change

CO ₂ +1.0％

NMHC -6.7％；

Fuel consumption, F _c, l/100km+2.0%

Can obtain similar result during with the oxygenated additive of other oxygenated additive alternate embodiments of the present invention 4-1 to 4-10.

For preparing above-mentioned all combusting preparation 4-1 to 4-10 of this this motor fuel composite, earlier with hydrocarbon component (HCC), it be a gasoline and the mixture of airsetting thing in winter, mix with ethanol, and in this mixture corresponding oxygenated additive of adding and C ₆-C ₁₂Hydrocarbon.Then allowing the gained motor fuel composite being not less than under-35 ℃ of conditions before test placed 1 to 24 hour.Any mixing equipment is not used in the preparation of all above-mentioned preparations.

Combusting preparation of the present invention has proved regulates the possibility as the vapour pressure that contains ethanol engine fuel of standard spark-ignition type internal combustion engine based on non-standard gasoline with high-vapor-pressure.

When Fig. 2 shows the hydrocarbon component (HCC) that contains 85 volume % gasoline in winter A98 and 15 volume % airsetting things is mixed with the additive agent mixture 1 that contains 40 volume % ethanol and 60 volume % methyl benzoate, the funtcional relationship of dry blowing vapour pressure equivalent (DVPE) and ethanol content.

Fig. 2 proves that using this to contain ethanol can obtain containing ethanol petrol with the additive agent mixture that is different from the alcoholic acid oxygenated additive, and its vapour pressure is no more than the vapour pressure of source hydrocarbon component (HCC).

When fuel mixture is the additive agent mixture that contains the methyl benzoate of the ethanol of 40 volume % and 60 volume %, the gasoline A92 the or during mixture of the hydrocarbon component of A95 in winter with containing 15 volume % airsetting things and 85 volume % can get similar DVPE result.

As other oxygenatedchemicalss and C of the present invention ₆-C ₁₂The ratio use is used for this mixture preparing when containing ethanol petrol with the modulation additive agent mixture hydrocarbon then according to the present invention, obtains similar result.

The vapour pressure equivalent (DVPE) of these gasoline mixtures of the present invention is no more than the DVPE of source hydrocarbon component (HCC).Simultaneously can add oxygenated additive, its add-on should just can make gained contain the requirement that ethanol petrol meets the motor spirit that is used for the standard spark-ignition type internal combustion engine fully.

Embodiment 5

Embodiment 5 proved when the fuel alkyl when according to the dry blowing vapour pressure equivalent of ASTM D-5191 being the gasoline of redistribution of 27.5kPa (about 4psi), reduction contains the normal possibility of dry blowing vapour pressure of ethanol engine fuel.

For preparing this composition mixture, used at Sweden Preem and purchase in the gasoline of the unleaded redistribution of Russian Lukoil and purchase sherwood oil in German Merck.

The hydrocarbon component (HCC) that is used for motor fuel composite is by the gasoline A92 in winter with 85 volume %, and A95 or A98 and about 15 volume % airsetting thing hydrocarbon liquid (GC) are mixed with.

Source gasoline contains C ₆-C ₁₂Aliphatic series and alicyclic hydrocarbon comprise saturated and undersaturated.

Fig. 1 shows the DVPE character that contains ethanol engine fuel based on the gasoline A92 of redistribution and sherwood oil.Shown similar character based on the gasoline A95 of redistribution and the ethanol engine fuel that contains of A98 and sherwood oil.

Should be pointed out that adding ethanol in the gasoline of redistribution compares the higher vapour pressure rising of generation with interpolation ethanol in normal benzene.

Contain the gasoline A92 of 80 volume % redistributions and the gasoline of 20 volume % sherwood oils (PB) and have following character:

DVPE＝27.5kPa

Anti-knock index 0.5 (RON+MON)=85.5

Contrast fuel 5-1 contains the gasoline A92 of redistribution, sherwood oil (PB) and ethanol, and do not have following character simultaneously forming:

A92: PB: ethanol=76: 19: 5 volume %

DVPE＝36.5kPa

0.5(RON+MON)＝89.0

A92: PB: ethanol=72: 18: 10 volume %

DVPE＝36.0kPa

0.5(RON+MON)＝90.7

Fuel 5-2 of the present invention contains the gasoline A92 of redistribution, sherwood oil (PB), and ethanol and oxygenated additive, and do not have following character simultaneously forming:

A92: PB: ethanol: primary isoamyl alcohol=64: 16: 10: 10 volume %

DVPE＝27.0kPa

0.5(RON+MON)＝90.5

A92: PB: ethanol: diisobutyl ether=64: 16: 10: 10 volume %

DVPE＝27.5kPa

0.5(RON+MON)＝90.8

A92: PB: ethanol: propyl carbinol=64: 16: 10: 10 volume %

DVPE＝27.5kPa

0.5(RON+MON)＝90.1

A92: PB: ethanol: 2,4,4-tributyl-1-amylalcohol=64: 16: 10: 10 volume %

DVPE＝25.0kPa

0.5(RON+MON)＝91.8

Fuel 5-3 contains the gasoline A92 of redistribution, sherwood oil (PB), ethanol, oxygenated additive and C ₈-C ₁₂Hydrocarbon, and do not have following character simultaneously forming:

A92: PB: ethanol: primary isoamyl alcohol: petroleum naphtha=60: 15: 9.2: 0.8: 15 volume %

The petroleum naphtha boiling point is 140-200 ℃

DVPE＝27.5kPa

0.5(RON+MON)＝89.3

A92: PB: ethanol: propyl carbinol: petroleum naphtha: dimethylbenzene=60: 15: 9.2: 0.8: 7.5: 7.5 volume %

The petroleum naphtha boiling point is 140-200 ℃

DVPE＝27.5kPa

0.5(RON+MON)＝91.2

A92: PB: ethanol: tetrahydrofurfuryl alcohol: isopropyl benzene=60: 15: 9: 1: 15 volume %

DVPE＝27.5kPa

0.5(RON+MON)＝91.3

Following fuel composition has proved the normal possibility of dry blowing vapour pressure that contains ethanol petrol of regulating based on the gasoline A98 and the sherwood oil (PB) of redistribution.

Contain the gasoline A98 of 80 volume % redistributions and the motor spirit of 20 volume % sherwood oils (PB) and have following character:

DVPE＝27.3kPa

Anti-knock index 0.5 (RON+MON)=88.0

Contrast fuel 5-4 contains the gasoline A98 of redistribution, sherwood oil (PB) and ethanol, and do not have following character simultaneously forming:

A98: PB: ethanol=76: 19: 5 volume %

DVPE＝36.3kPa

0.5(RON+MON)＝91.0

A98: PB: ethanol=72: 18: 10 volume %

DVPE＝35.8kPa

0.5(RON+MON)＝92.5

The present invention contrasts the gasoline A98 that fuel 5-5 contains redistribution, sherwood oil (PB), and ethanol and oxygenated additive, and do not have following character simultaneously forming:

A98: PB: ethanol: primary isoamyl alcohol=64: 16: 10: 10 volume %

DVPE＝26.9kPa

0.5(RON+MON)＝92.0

A98: PB: ethanol: Pentyl alcohol=64: 16: 10: 10 volume %

DVPE＝26.5kPa

0.5(RON+MON)＝91.2

A98: PB: ethanol: linalool=68: 17: 9: 6 volume %

DVPE＝27.1kPa

0.5(RON+MON)＝92.6

A98: PB: ethanol: 3,6-dimethyl-3-octanol=68: 17: 9: 6 volume %

DVPE＝27.0kPa

0.5(RON+MON)＝92.5

Contrast fuel 5-6 contains the gasoline A98 of redistribution, sherwood oil (PB), ethanol, oxygenated additive and C ₈-C ₁₂Hydrocarbon (d), and do not have following character simultaneously forming:

A98: PB: ethanol: primary isoamyl alcohol: petroleum naphtha=60: 15: 9.2: 0.8: 15 volume %

The petroleum naphtha boiling point is 140-200 ℃

DVPE＝27.0kPa

0.5(RON+MON)＝91.7

A98: PB: ethanol: linalool: other cymene=60: 15: 9: 1: 15 volume %

DVPE＝26.0kPa

0.5(RON+MON)＝93.0

A98: PB: ethanol: methyl-cyclohexanol: 1,8-terpadiene=60: 15: 9.5: 1: 14.5 volume %

DVPE＝25.4kPa

0.5(RON+MON)＝93.2

The possibility of following motor fuel composite proof to regulating based on the dry blowing vapour pressure equivalent that contains the alcohol fuel mixture of the gasoline A95 of the redistribution of about 80 volume % and about 20 volume % sherwood oils.Contain the gasoline A95 of 80 volume % redistributions and the gasoline of 20 volume % sherwood oils (PB) and have following character:

DVPE＝27.6kPa

Anti-knock index 0.5 (RON+MON)=86.3

According to method above the gasoline that contains 80 volume % redistributions and the hydrocarbon component (HCC) of 20 volume % sherwood oils (PB) are used as contrast fuel, test uses VOLVO 240 DL in 1987 to carry out, it is B230F, 4 cylinders, 2.32 rise engine (No.LG4F20-87), test is carried out according to testing method EU2000 NEDC EC 98/69, obtains following result:

CO 2.631g/km；

HC 0.348g/km；

NO _x 0.313g/km；

CO ₂ 235.1g/km；

NMHC 0.308g/km；

Fuel consumption, F _c, l/100km 10.68

Fuel 5-7 contains the gasoline A95 of redistribution, sherwood oil (PB) and ethanol, and do not have following character simultaneously forming:

A95: PB: ethanol=76: 19: 5 volume %

DVPE＝36.6kPa

0.5(RON+MON)＝90.2

A95: PB: ethanol=72: 18: 10 volume %

DVPE＝36.1kPa

0.5(RON+MON)＝91.7

To containing the gasoline A95 of 72 volume % redistributions, 18 volume % sherwood oils (PB) and 10 volume % alcoholic acid fuel mixtures (RFM5) are used as contrast fuel, test uses VOLVO 240 DL in 1987 to carry out, it is B230F, 4 cylinders, 2.32 rise engine (No.LG4F20-87), test is carried out according to EU2000 NEDC EC 98/69, and proves the result in the mode with respect to (+) or (-) % of the gasoline of gasoline A95 that contains 80 volume % redistributions and 20 volume % sherwood oils (PB):

CO -4.8％；

HC -1.3％；

NO _x +26.3％；

CO ₂ +4.4％；

NMHC -0.6％；

Fuel consumption, F _c, l/100km+5.7%

Fuel 5-8 contains the gasoline A95 of redistribution, sherwood oil (PB), and ethanol and oxygenated additive, and do not have following character simultaneously forming:

A95: PB: ethanol: primary isoamyl alcohol=64: 16: 10: 10 volume %

DVPE＝27.1kPa

0.5(RON+MON)＝92.0

A95: PB: ethanol: 2,6-2,6-dimethyl-4-heptanol=64: 16: 10: 10 volume %

DVPE＝27.0kPa

0.5(RON+MON)＝92.4

A95: PB: ethanol: tetrahydrofurfuryl acetate=64: 15: 15: 10 volume %

DVPE＝25.6kPa

0.5(RON+MON)＝93.0

Fuel 5-9 contains the gasoline A95 of redistribution, sherwood oil (PB), ethanol, oxygenated additive and C ₈-C ₁₂Hydrocarbon, and do not have following character simultaneously forming:

A95: PB: ethanol: primary isoamyl alcohol: petroleum naphtha=60: 15: 9.2: 0.8: 15 volume %

The petroleum naphtha boiling point is 140-200 ℃

DVPE＝27.1kPa

0.5(RON+MON)＝91.4

A95: PB: ethanol: tetrahydrofurfuryl alcohol: tertiary butyl hexanaphthene=60: 15: 9.2: 0.8: 15 volume %

DVPE＝26.5kPa

0.5(RON+MON)＝90.7

A95: PB: ethanol: 4-methyl-4-hydroxy tetrahydro pyrans: isopropyl toluene=60: 15: 9.2: 0.8: 15 volume %

DVPE＝26.1kPa

0.5(RON+MON)＝92.0

Motor spirit 5-10 contains the gasoline A95 of the redistribution of 60 volume %, the sherwood oil of 15 volume % (PB), the ethanol of 10 volume %, 2 of 5 volume %, the isopropyl toluene of 5-dimethyl-tetrahydrofuran and 10 volume %.The test that preparation 5-10 is carried out proves, how the present invention makes the ethanol petrol preparation that contains of redistribution have low vapour pressure, wherein alcoholic acid exists in motor fuel composite, compares with source hydrocarbon component (HCC), does not cause the normal rising of dry blowing vapour pressure.In addition, this gasoline also can guarantee to compare with said mixture RFM5, and the level of toxic substance quantity discharged reduces and the fuel consumption reduction in the tail gas.Preparation 5-10 has following character:

Density in the time of 15 ℃ is according to ASTM D 4052 764.6kg/m3;

Initial boiling point is according to 86 48.9 ℃ of ASTM D;

-70 ℃ of 25.3 volume % of the part of can vaporizing;

-100 ℃ of 50.8 volume % of the part of can vaporizing;

-150 ℃ of 76.5 volume % of the part of can vaporizing;

-180 ℃ of 95.6 volume % of the part of can vaporizing;

204.5 ℃ of full boiling points;

Vaporization resistates 1.4 volume %;

Vaporization loss 0.5 volume %;

Oxygen level is according to ASTM D 4815 4.6%w/w;

Acidity value, according to ASTM D 1613, wt%HAC 0.08;

PH is according to ASTM D 1,287 7.5;

Sulphur content is according to ASTM D 5453 39mg/kg;

Gum level is according to ASTM D 381 1.5mg/100ml;

Water-content is according to ASTM D6304 0.1%w/w;

Aromatic hydrocarbons according to SS 155120, comprises benzene 38 volume %;

Benzene, single meter is according to EN238 0.4 volume %;

DVPE is according to ASTM D 5191 27.2kPa;

Anti-knock index 0.5 (RON+MON) is according to ASTM D

2699-86 and ASTM D 2700-86 91.8

As stated above motor spirit preparation 5-10 is tested, and proves the result in mode with respect to (+) or (-) % of the result of the motor spirit of the sherwood oil of the gasoline A95 of the redistribution that contains 80 volume % and 20 volume %:

CO -12.3％；

HC -6.2％；

NO _xNo change;

CO ₂ +2.6％

NMHC -6.4％；

Fuel consumption, F _c, l/100km+3.7%

Can obtain similar result during with the oxygenated additive of other oxygenated additive alternate embodiments of the present invention 5-1 to 5-10.

For preparing above-mentioned all combusting preparation 5-1 to 5-10 of this motor fuel composite, earlier with hydrocarbon component (HCC), it is the mixture of gasoline preparation and sherwood oil (PB), mixes with ethanol, and add corresponding oxygenated additive and C in this mixture ₈-C ₁₂Hydrocarbon.Then allowing the gained motor fuel composite being not less than under-35 ℃ of conditions before test placed 1 to 24 hour.Any mixing equipment is not used in the preparation of all above-mentioned preparations.

The present invention has proved and has regulated the possibility as the vapour pressure that contains ethanol engine fuel of standard spark-ignition type internal combustion engine based on non-standard gasoline with low-steam pressure.

Fig. 2 shows and will contain the hydrocarbon component (HCC) of the gasoline A92 and the 20 volume % sherwood oils of 80 volume % redistributions, with contain 40 volume % ethanol, 20 volume %3,3, the 5-trimethylcyclohexanone, 20 volume % boiling points are the oxygenated additive mixture 5 of 130-170 ℃ petroleum naphtha and 20 volume % 4-tert-butyltoluenes when mixing, the characteristic of dry blowing vapour pressure equivalent (DVPE).This figure proves and uses additive of the present invention can obtain containing ethanol petrol that its vapour pressure is no more than the vapour pressure of source hydrocarbon component (HCC).

When the gasoline A95 of above-mentioned oxygenated additive and the redistribution of sherwood oil that contains 20 volume % and 80 volume % or A98 mix mutually, can get similar DVPE characteristic.

As other oxygenatedchemicalss and C of the present invention ₆-C ₁₂Hydrocarbon according to the present invention ratio use with the modulation oxygenated additive, when using it for preparation then and containing ethanol petrol, obtain similar result.

The vapour pressure equivalent (DVPE) of these gasoline of the present invention is no more than the DVPE of source hydrocarbon component (HCC).All anti-knock indexs that contain ethanol petrol that make according to the inventive method are higher than source hydrocarbon component (HCC) simultaneously.

More than explanation and the embodiment of preferred embodiment should look by the defined illustration of the present invention of claim, rather than restriction.As easy understanding, can use a large amount of changes of above-mentioned feature and combination and do not deviate from as the defined the present invention of claim.All these changes should be included in the following claim scope.

Claims

1. reduce and contain 0.1-20 volume % ethanol, be used for the C of general spark-ignition type internal combustion engine ₃-C ₁₂The method of alkyl motor spirit mixture vapour pressure is characterized in that, removes ethanol component (b) and a kind of C ₃-C ₁₂Outside the hydrocarbon component (a), also contain a kind of oxygenated additive (c), it is selected from and is different from alcoholic acid alcohol, ketone, ether, ester, hydroxyketone, ketone ester, and at least a in the Oxygenic heterocyclic compounds, the usage quantity of this oxygenated additive (c) in fuel mixture is at least 0.05 volume % of total fuel mixture.

2. the method for claim 1 is characterized in that oxygenated additive (c) is joined in the ethanol component (b), and then (c) and mixture (b) are added in the hydrocarbon component (a).

3. the method for claim 1 is characterized in that ethanol component (b) is added in the hydrocarbon component (a), then adds oxygenated additive (c) in (b) and mixture (a).

4. each method of aforementioned claim, it is characterized in that oxygenated additive is selected from following compounds: the alkanol that contains 3-10 carbon atom, the ketone that contains 4-9 carbon atom, the dialkyl ether that contains 6-10 carbon atom, chain acid alkyl ester, described additive contain 5-8 carbon atom, the hydroxyketone that contains 4-6 carbon atom, the ketone ester of paraffinic acid, described additive contain 5-8 carbon atom, and the Oxygenic heterocyclic compounds that contains 5-8 carbon atom.

5. each method of aforementioned claim, it is characterized in that vapour pressure that alkyl contains the alcohol fuel mixture has reduced 50% of the vapour pressure lift-off value that caused by ethanol, more preferably 80%, and even more preferably reduce to the vapour pressure that is equivalent to hydrocarbon component self, and/or be equivalent to the standard-required value of any marketable gasolines vapour pressure.

6. each method of aforementioned claim is characterized in that by (a), and (b) octane value with (a) is identical at least for the octane value of the fuel that obtains with (c), and/or satisfies the standard limit of octane value that marketable gasolines requires.

7. each method of aforementioned claim is characterized in that C ₃-C ₁₂The hydrocarbon component mixture is selected from the standard type gasoline of non-redistribution, hydrocarbon liquid from refining of petroleum, hydrocarbon liquid from Sweet natural gas, the coal that reclaims from chemical method turns the hydrocarbon liquid of using tail gas into, from hydrocarbon liquid or its mixture of synthetic gas processing, be preferably the standard type gasoline of non-redistribution.

8. each method of aforementioned claim, it is characterized in that having an appointment containing of supply the market 92 volume % ethanol and all the other parts to 100 volume % are the modification alcohol mixtures of hydrocarbon and by product, can be used for fuel composition or fuel additive composition.

9. each method of aforementioned claim is characterized in that used ethanol component (b) contains about 99.5 volume % ethanol at least.

10. each method of aforementioned claim is characterized in that not using any blending means and motor fuel composite to allow before use to place at least 1 hour.

11. each method of aforementioned claim is characterized in that the 15 volume %s of additive therefor usage quantity up to total fuel composition.

12. each method of aforementioned claim is characterized in that the gained fuel composition shows below characteristics:

(i) density 15 ℃ the time according to ASTM D 4059, is at least 690kg/m ³

(ii) oxygen level according to ASTM D 4815, is not more than 7%w/w;

(iii) dry blowing vapour pressure equivalent according to ASTM D 5191, is 20-120kPa;

(iv) acid content according to ASTM D 1613, is not more than 0.1wt%HAC;

(v) pH according to ASTM D 1287, is 5-9;

(vi) aromaticity content according to SS 155120, is not more than 40 volume %, and wherein benzene content is not more than 1 volume % according to EN238;

(vii) sulphur content according to ASTM D 5453, is not more than 50mg/kg;

(viii) gum level according to ASTM D 381, is not more than 2mg/100ml;

(ix) water-content according to ASTM D6304, is not more than 0.25%w/w;

(x) according to the distillation characteristics of ASTM D86, wherein initial boiling point is at least 20 ℃; The part of can vaporizing in the time of 70 ℃ is at least 25 volume %; The part of can vaporizing in the time of 100 ℃ is at least 50 volume %; The part of can vaporizing in the time of 150 ℃ is at least 75 volume %; The part of can vaporizing in the time of 190 ℃ is at least 95 volume %; Full boiling point is not higher than 205 ℃; The no more than 2 volume % of vaporization resistates; And

(ix) anti-knock index 0.5 (RON+MON) according to ASTM D 2699-86 and ASTM D2700-86, is at least 80.

13. the motor fuel composite that is used for general spark-ignition type internal combustion engine that can obtain by each method of claim 1-12, it contains:

(a) the hydrocarbon component of forming by the C3-C12 hydrocarbon-fraction;

(b) fuel-grade ethanol, its add-on are the 0.1-20 volume % of motor fuel composite cumulative volume, are suitably 1-20 volume %, are preferably 3-20 volume %, and 5-10 volume % more preferably; With

(c) oxygenated additive, it comprises the alkanol that contains 3-10 carbon atom, the ketone that contains 4-9 carbon atom, the dialkyl ether that contains 6-10 carbon atom, chain acid alkyl ester, described additive contains 5-8 carbon atom, the hydroxyketone that contains 4-6 carbon atom, the ketone ester of paraffinic acid, described additive contain 5-8 carbon atom, and Oxygenic heterocyclic compounds at least a that contains 5-8 carbon atom, the 0.05-15 volume % that described additive add-on is the motor fuel composite cumulative volume, be suitably 0.1-15 volume %, be preferably 3-10 volume %, most preferably be 5-10 volume %.

14. can be used for the fuel-grade ethanol (b) of the method for claim 1 and the mixture of oxygenated additive (c), it is characterized in that (b) and volume ratio (c) are 1: 150 to 400: 1, more preferably 1: 10 to 10: 1, and oxygenated additive is selected from the alkanol that contains 3-10 carbon atom, the ketone that contains 4-9 carbon atom, the dialkyl ether that contains 6-10 carbon atom, chain acid alkyl ester, described additive contains 5-8 carbon atom, the hydroxyketone that contains 4-6 carbon atom, the ketone ester of paraffinic acid, described additive contain 5-8 carbon atom, and contain the Oxygenic heterocyclic compounds of 5-8 carbon atom.

15. the mixture of claim 14, characteristics are to contain: ethanol component (b), its content are 0.5-99.5 volume %, are preferably 9.5-99 volume %, and more preferably 20-95 volume % most preferably is 25-92 volume %; Oxygen-containing component (c), its content are 0.5-99.5 volume %, are preferably 0.5-90 volume %, and more preferably 0.5-80 volume % most preferably is 3-70 volume %; And contain at least a C ₆-C ₁₂Hydrocarbon is preferably C ₈-C ₁₁The component of hydrocarbon (d), its content are 0-99 volume %, are preferably 0-90 volume %, 0-79.5 volume % more preferably, most preferably be 5-77 volume %, component in the mixture (b): the ratio of ((c)+(d)) preferably remains on 1: 200-200: in 1 scope, and more preferably 1: 10-10: 1.

16. the mixture of claim 15, it is characterized in that component (d) is for independent aliphatic saturated and unsaturated or alicyclic ring is saturated or unsaturated hydrocarbons, or its mixture, and/or boiling point is at 100-200 ℃ hydrocarbon-fraction that derives from oil product distillation, bituminous coal resin or the product that obtains from synthetic gas processing.

17. the mixture of claim 14-16 is characterized in that component (b) is that it contains the ethanol of the 92 volume % that have an appointment as available modification alcohol mixture on the market, all the other are hydrocarbon and by product, and both merge formation component (b).

18. the mixture of claim 14-16 is characterized in that fuel-grade ethanol contains the ethanol of at least 99.5 volume %.

19. acting as a fuel, the mixture of claim 14-16 is used for the purposes of modified gasoline engine.

20. the purposes of the mixture of claim 14-16, it is used for obtaining to contain ethanol petrol fuel, by the described mixture of respective amount is mixed with general Fuel Petroleum (a) and the octane value of this fuel is adjusted to the value of hope, meanwhile, vapour pressure with independent gasoline component (a) is compared, and keeps or reduce the vapour pressure of the fuel composition that so obtains.