WO2013039354A2

WO2013039354A2 - Alternative fuel for internal combustion engine, containing biobutanol

Info

Publication number: WO2013039354A2
Application number: PCT/KR2012/007385
Authority: WO
Inventors: 이용만
Original assignee: Lee Yong-Man
Priority date: 2011-09-14
Filing date: 2012-09-14
Publication date: 2013-03-21
Also published as: GB2509288A; KR20130029314A; GB201406655D0; KR101319987B1; CN105062577A; US20150210948A1; CN105062577B; CN103906829A; IN2014CN02826A; WO2013039354A3

Abstract

The present invention relates to an alternative fuel composition for an internal combustion engine, the alternative fuel for an internal combustion engine comprising: 1-88 wt% of biobutanol or a mixture of biobutanol and butanol; 3-75 wt% of a paraffin-based hydrocarbon solvent; 3-35 wt% of toluene; and 6-30 wt% of xylene, based on the total weight of the composition.

Description

Alternative fuels for internal combustion engines containing biobutanol

The present invention relates to a fuel composition for an internal combustion engine, and to provide a fuel composition for an internal combustion engine as an alternative fuel applicable to not only an engine using gasoline as a fuel but also a diesel engine.

It is no exaggeration to say that the world is now at war with energy and the environment, as the problem of fossil fuel depletion and environmental pollution is getting worse all over the world. In particular, in order to keep pace with the trend of international environmental regulations (Kyoto Protocol), which is strengthened in the high oil price era, the need for development of alternative fuels is now more demanding.

On the other hand, the inventors of the present invention have continued to develop alternative fuels of high fuel efficiency using bioethanol, but still need to solve problems such as excessive fuel consumption, and also prevent phase separation of trace amounts of water present in the fuel. The development of high performance alternative fuels has been required.

The present invention solves the conventional problems as described above, the fuel oil for the internal combustion engine does not cause the phase separation of the trace amount of water present in the fuel during long-term storage, each component is sufficiently mixed to further increase the occurrence of knocking or fuel combustion efficiency To provide a fuel composition. In another aspect, the present invention provides a new fuel composition with improved octane number by using biobutanol and reduced environmental pollutants by reducing harmful emissions.

In order to achieve the above object, the fuel composition for an internal combustion engine containing the biobutanol of the present invention is a) 1 to 88% by weight based on the total weight of the composition Biobutanol or a mixture of biobutanol and butanol, b) 3 to 75% by weight of a paraffinic hydrocarbon solvent, c) 3 to 35% by weight of toluene and d) 6 to 30% by weight of xylene. .

Here, the fuel composition is e) 1 to 20% by weight of butane derivatives, f) 1 to 30% by weight of pentane derivatives, g) 1 to 40% by weight of hexane derivatives, h) 1 to 45% by weight of benzene derivatives and i) 1 to 20% by weight of heptane derivatives, characterized in that it further contains at least one additive selected from the group consisting of.

At this time, the component b) is characterized in that it contains a paraffinic hydrocarbon or paraffinic hydrocarbon solvent having 4 to 28 carbon atoms or a mixture thereof.

In addition, the fuel composition is 1 to 85% by weight aliphatic alkanes and alicyclic alkanes having 5 to 40 carbon atoms, 0.01 to 85% by weight of biodiesel, 1 to 43% by weight of kerosene (Kerosens), 1 to 32% by weight Hi-Sene, 1-36 wt% Hi-nine, 0.1-5 wt% Lubricant base oil, 1-9 wt% Butyl Cellosolve, 1-11 wt% Ethyl Cell And at least one additive selected from the group consisting of rosolve, 1-13 wt% isopropanol, 1-12 wt% isobutanol, and 1-19 wt% aromatic hydrocarbon mixture.

In addition, methyl tertiary butyl ether (MTBE), ethyl tertiary butyl ether (ETBE) and the like may be used, but in the present invention, the biobutanol does not require a separate octane number improving agent.

In addition, when using the ethanol, there is a disadvantage in that the bioethanol is mixed with moisture in the air to cause phase separation and corrosion of the transport pipe, but a corrosion inhibitor should be used, but in the present invention, there is no need for a separate corrosion inhibitor. Have.

On the other hand, the alternative fuel for the internal combustion engine of the present invention is characterized in that the fuel composition is used alone or mixed with a known internal combustion engine fuel or alcohol fuel.

The fuel composition for the internal combustion engine of the present invention has an effect of significantly reducing the generation and emission of air pollutants compared to the conventional gasoline fuel when applied as a fuel of the internal combustion engine in terms of the environment, and also in the existing internal combustion engine in terms of energy efficiency Compared with the fuel, it exhibits improved startability and power performance, and also reduces noise.

The present invention relates to a fuel composition for an internal combustion engine, wherein a paraffinic hydrocarbon solvent having 1 to 88% by weight of biobutanol or a mixture of biobutanol and butanol, and 3 to 75% by weight of 4 to 28 carbon atoms, based on the total weight of the composition , Alternative fuel containing 3 to 35% by weight of toluene and 6 to 30% by weight of xylene.

The composition ratio of this invention is a composition ratio with respect to the whole composition unless there is particular notice.

In addition, the present invention is at least one component selected from 1 to 9% by weight of butyl cellosolve (Butyl Cellosolve), 1 to 11% by weight of ethyl cellosolve (Ethyl Cellosolve) or a mixture thereof as the phase separation inhibitor This further provides a fuel composition contained. The present invention may further add 1 to 13% by weight of isopropanol, 1 to 12% by weight of isobutanol, 0.001 to 6% by weight of rosin and rosin derivatives and rosin acid compounds or mixtures thereof, based on the total composition. Contains what is present.

Another fuel composition for an internal combustion engine of the present invention may further add 1 to 19% by weight of an aromatic hydrocarbon mixture as needed.

The fuel composition for the internal combustion engine is more preferably 15 to 60% by weight of biobutanol or a mixture of biobutanol and butanol, a mixture of paraffinic hydrocarbons having 20 to 50% by weight of 4 to 28 carbon atoms, and 5 to 19 Weight toluene, 6-18 weight percent xylene, 2-5 weight percent Butyl Cellosolve, 0.5-6 weight percent Ethyl Cellosolve or mixtures thereof A fuel composition for an internal combustion engine further comprising a phase separation inhibitor of at least one component, 0.5 to 2% by weight of rosin and rosin derivative and rosin acid compound or a mixture thereof and 3 to 12% by weight of aromatic hydrocarbon mixture.

In addition, if necessary in the present invention by adding any one or more components selected from 2 to 6% by weight of isopropanol, 2 to 7% by weight of isobutanol with respect to the total composition can be maximized the effect of preventing phase separation.

In another aspect of the present invention, 0.01 to 85% by weight of biodiesel or a known diesel or mixture thereof, 1 to 43% by weight of kerosene, 1 to 32% by weight of hysine, 1 to 36% by weight of nin , 0.1 to 5% by weight of the fuel composition for an internal combustion engine further adding any one or more components selected from lubricating base oil.

Furthermore, in each of the embodiments of the invention described above, 1 to 20 wt% butane derivative, 1 to 30 wt% pentane derivative, 1 to 40 wt% hexane derivative, 1 to 45 wt% benzene derivative, and 1 to 20 wt% The addition of any one or more components selected from% heptane derivatives also belongs to the present invention. In the present invention, butane derivatives, pentane derivatives, hexane derivatives, benzene derivatives and heptane derivatives are generic to their derivatives and / or isomers, which are obvious to those skilled in the art, and thus will not be described in detail. Each component of will be described in more detail.

For example, benzenes are any one or more benzene derivatives selected from benzene and a solvent in which a hydrogen group of benzene is substituted with 1 to 3 alkyl groups of 1 to 3 carbon atoms. Toluene, xylene, benzene, ethylbenzene, 1-methyl- 3ethylbenzene, 1,3,5-trimethylbenzene, 1,2,4-trimethylbenzene, 1,2,3-trimethylbenzene, 1-ethyl-2,4-dimethylbenzene, indane, 1-methyl-3- Propylbenzene, and the like, butane, pentane, hexane, heptane derivatives are generic to compounds belonging to isomers and derivatives thereof. Benzene may be used in the above, but in order to prevent environmental problems, priority is given to avoiding it.

And in the present invention can be used lubricating base oil. Lubricant base oils include paraffinic base oils (base oil content: 45-70%), naphthenic base oils (base oil content: 65-75%), aromatic base oils (base oil content: 20-25%), and the like. Any one or more selected from general industrial oils, electric insulating oils, refrigeration oils, and process oils may be used. Lubricant base oil is a friction that resists movement when two objects move in contact with each other. It can be used to reduce the frictional force or to remove heat generated by friction. The content in the range of 0.1 to 5% by weight helps to improve fuel efficiency and reduce heat due to friction.

In the present invention, rosin and rosin derivatives and rosin acid compounds may be used as necessary, and rosin acid used herein is a generic term for organic acids contained in rosin obtained by distilling rosin. Rosin acid is a natural resin obtained by distilling rosin. Resin acid is a valuable resource that is rarely obtained from natural products other than trees, and since ancient times, rosin has been used as a corrosion inhibitor to ships, and it is also used to prevent slipping of stringed strings, but in most cases it is used for various purposes. The chemical structure of the resin acid contains chemically active double bonds.

Double bonds cause resins to react with each other or with resins and other compounds (for example, maleic acid), and what is produced by these reactions is called polymerization rosin, which causes instability when the resin acid is placed in the air. This is stabilized by the addition of hydrogen. This is called hydrogenated rosin and is used for synthetic resins and inks.

Rosin acid is a generic name of organic acid obtained by distilling rosin and contains abiotic acid, neoabietinic acid, levopimaric acid, hydroavietic acid, fimaric acid, dextonic acid, palustrinic acid and the like. Use of 0.5 to 2% by weight is effective in preventing corrosion.

Biobutanol, a) component of the present invention, is a component produced from biomass, and when the alcohol component is used, it is very miscible with water, so that phase separation of fuel does not occur, and thus good fuel economy without adding a separate phase separation inhibitor. And biobutanol of the present invention having anti-knocking properties not only provide a high octane number and a high compression ratio according to the composition of the present invention, but also has an effect of preventing phase separation, achieves high fuel efficiency of high efficiency, and also uses a large amount of low vapor pressure In addition, especially high density and good low temperature start-up, the use content is used in the range of 1 to 88% by weight, preferably 2 to 70% by weight based on the total composition, if less than the above range Sufficient octane price synergistic effect and compression ratio cannot be obtained, and when it exceeds the above range, fuel consumption Oh it is.

The b) component used for this invention can use the thing containing the paraffinic hydrocarbon, the paraffinic hydrocarbon solvent, or a mixture thereof.

More specifically, a fuel composition for an internal combustion engine, characterized in that a small amount of a paraffinic hydrocarbon, a paraffinic hydrocarbon solvent, or a mixture of a small amount of cycloparaffinic hydrocarbons is mixed at room temperature having 4 to 28 carbon atoms. To provide.

Examples include benzine, rubber gasoline, solvent naphtha, mineral spirits, cleaning solvents, studard solvents, and aromatic solvents, and the common names Canadol, Isoparaffin Hydrocarbon (Isoparaffin). Hydro carbone, Ligroin, Naphtha Ligroin, Refined Solvent Naphtha, VM & P Naphtha, Vanish marker's Naphtha, Naphtha Studdard Solvent, White White Spirits, Studard Solvet Naphtha, Studard Solvent Orangic Solvent, Enamel Thinner, Mineral Thinner, Rubber Solvent (Naphtha), It is called Vasol, Hydrotreated light straight run (petroleum), Naphtha (petroleum), hydrotreated light Naphtha, etc., trade name is ExxonMobil's 1520 Naphtha, Ex xol Hexane Fluid, GS-Caltex's Techsol-S, Kick Sol, SK's SBP1 (Special Boiling Point), SBP4 (Special Boiling Point), Solvent-1, Solvent-5 (Cleaning Solvent) .

The used content is 3 to 75% by weight, preferably 20 to 50% by weight based on the total weight of the composition can be the most effective, and the clogging phenomenon of the nozzle attached to the internal combustion engine due to impurities In addition to preventing, the soot prevention effect of the internal combustion engine is improved.

The present invention uses toluene and xylene to further improve the explosion power and fuel economy of the engine, the amount of the toluene is used in the range of 3 to 35% by weight, preferably 10 to 30% by weight relative to the total weight of the composition. In addition, the use of xylene in the range of 6 to 30% by weight can increase the explosive power and fuel efficiency of the engine without generating soot due to incomplete combustion. The xylene component generally means xylene isomer alone or mixed xylene component.

The phase separation preventive agent of the present invention generates water when fuel is stored for a long time, and when water is condensed in the fuel container when the fuel is injected into the fuel, or part of the water is separated from other components, causing knocking when the fuel is burned in the engine or the fuel In the present invention, as a component to prevent deterioration of the efficiency, at least one component selected from 1 to 9% by weight of butyl cellosolve and 1 to 11% by weight of ethyl cellosolve is used, and further 1 to 13% by weight May be used by adding at least one component selected from isopropanol and 1 to 12% by weight of isobutanol. The phase separation inhibitor is good for extending the life of the engine. More preferably, when more than one component selected from butyl cellosolve, ethyl cellosolve or mixtures thereof is used, it serves as a better phase separation inhibitor.

Isopropanol is a component that serves to reduce the interfacial tension between hydrophilic ethanol and the hydrophobic aromatic compound, which is the main fuel source of the present invention, to improve physical compatibility between compositions, and the content thereof may be used in an amount of 1 to 13% by weight based on the total composition.

Butanol has isomers such as normal butanol, isobutanol, second butanol, and tert-butanol, and biobutanol using biomass as an petroleum substitute fuel uses wood-based raw materials, which account for 97% of the total plant biomass, in terms of securing raw materials. It is economical and biobutanol is superior to bioethanol as an alternative fuel for gasoline, and thus has an advantage as a transportation fuel.

Biobutanol began to be produced by microbial fermentation in the early 1900's, but as the petrochemical industry developed rapidly in the 1950's, it became a speculative road, and as the high oil price era solidified recently, it is emerging as a next-generation fuel that can replace petroleum.

Butanol is easier to store and transport than conventional ethanol-based biofuels, but also has higher thermal efficiency. Butanol has many advantages over ethanol because of its chemical structure. Ethanol has the disadvantage of being difficult to store and causing corrosive pipes. Butanol, on the other hand, allows existing infrastructure such as crude oil pipelines to be used without additional equipment.

Butanol in the present invention is a fuel composition for an internal combustion engine, characterized in that it contains biobutanol derived from biomass as a main component. Butanol, in particular, has a lower vapor pressure than ethanol, allowing for higher proportions than ethanol. It also has low volatility and low soot emissions.

Butanol reduces cold startability, which is a disadvantage of ethanol, and especially excessive fuel consumption, which is a disadvantage of alcohols. Also, butanol has an excellent effect on improving fuel efficiency and reducing emissions due to its high thermal efficiency. In particular, butanol prevents phase separation even in the presence of moisture in fuel. It is also an excellent component and is particularly good as a fuel for internal combustion engines when used within the range of 1 to 88% by weight.

Isobutanol is an ingredient that improves low temperature start-up, which is a disadvantage of ethanol, and especially reduces excessive fuel consumption, which is a disadvantage of alcohol, and has a superior effect on fuel efficiency and emission reduction. Especially good as.

In the present invention, it is also possible to further use an aromatic hydrocarbon mixture added for further fuel economy improvement.

For example, Aromatic-100 (ExxonMobil) is ethylbenzene, 1-methyl-3-ethylbenzene, 1,3,5-trimethylbenzene, 1,2,4-trimethylbenzene, 1,2,3-trimethylbenzene, Aromatic containing two or more components selected from isopropyl benzene, propyl benzene, cumene, 1-ethyl-2-methylbenzene, 1-ethyl-2.4-dimethylbenzene, naphthalene, naphthalene derivative, indane and indane derivative Hydrocarbon mixtures are exemplified.

Specifically, for example, ExxonMobil Aromatic-100, Hi-Sol 10 produced by Ashland Inc, Kocosol-100 or Cocosol-150 (SK), Techsol-100 (GS-Caltex) ), Polyethylbentech Heavy Aromatic Naphtha, High Flash Aromatic, Shellsol R, etc. In particular, the aromatic hydrocarbon mixture is used to improve the complexability and fuel economy, when the content of 1 to 19% by weight can be obtained an effect on the fuel efficiency improvement effect.

In addition, methanol can be obtained from petroleum or coal, but can also be obtained from natural wood.

The fuel composition for the internal combustion engine of the present invention is to lower the air pollution emissions, in particular, the alcohol component containing biobutanol is to improve the fuel economy through the effect of preventing phase separation, improving the octane number, prevention of incomplete combustion, etc. It is a new biofuel for internal combustion engine that can solve environmental pollution problem, groundwater that is emerging worldwide, and soil pollution, and has the advantage of replacing pollutant octane improver (typically MTBE). The present invention therefore relates to a method for lowering waste emissions of internal combustion engines and new octane number improvers. Among these, the internal combustion engine fuel alone or known and the fuel composition for the internal combustion engine of the present invention may be mixed and used as the fuel for the internal combustion engine.

As another example of the present invention, biodiesel may be added in an amount of 0.01 to 85% by weight in the total composition in each of the aspects of the present invention. Biodiesel is generally used mainly for diesel engines, but when a small amount is used for gasoline engines, lubrication is smoothed to improve fuel efficiency and extend engine life. However, if the biodiesel content is excessively solidified, the oil filter of the car may be clogged, the starting power may be lowered, and the engine power may be lowered. Nevertheless, diesel engines may be used within this category because they are powered by compression explosions.

In addition, the fuel composition may contain 1 to 43% by weight of kerosene, 1 to 32% by weight of hysine (by-product fuel oil No. 1 produced by Samsung Total), and 1 to 36% by weight of hynin (Samsung Total Co., Ltd.). It is a fuel composition which additionally contains any one or more components of by-product fuel oil No. 2). The hycin is a by-product produced in the process of producing a product from naphtha and condensate as a raw material in a petrochemical plant, and is composed of heavy components of about 9 to 18 carbon atoms. It is registered as by-product fuel oil No. 1 under the Alternative Fuel Business Act and is commonly used as Hi-Sene in the industry.

Hy-nine (C9 +) is also a by-product registered as by-product fuel oil No. 2 as a product produced in the process of producing petrochemical products using naphtha as a raw material in a petrochemical plant. The hysine and the hynins have the advantage of being used as an alternative fuel for internal combustion engines as by-products, but especially in the case of hynins, the pour point is -50 ° C., which can be used without changing the temperature in winter, and also because the sulfur content is low, sulfur oxides in the exhaust gas after combustion (SOx) has the advantage of low emissions, the hysine and heinin is a product that is significantly reduced compared to the sulfur content of diesel oil is very good as an alternative fuel for the internal combustion engine.

Moreover, it is also contained in this invention to add the aliphatic alkanes and alicyclic alkanes component of 1-85 weight% C5-C40 more preferably 6-26 more as needed. More specifically, alkanes having 5 to 40 carbon atoms, derivatives having alkanes having 1 to 2 carbon atoms in the alkanes as side chains, and 1 to 2 carbon atoms in hydrogen of a cyclic compound having 5 to 6 carbon atoms A fuel composition for an internal combustion engine, characterized by a component mainly composed of a derivative substituted with alkane.

The fuel composition for an internal combustion engine of the present invention can be directly replaced with an internal combustion engine fuel. In addition, the fuel for an internal combustion engine can be mixed and used for gasoline or diesel oil.

The fuel composition of the present invention can also be used as an alternative fuel and additive for gasoline and diesel fuel. When used as an additive, the present fuel composition of the total 100% by weight of gasoline, even if used, regardless of the amount of fuel efficiency and power performance, emissions, noise, etc., rather than using a conventional gasoline shows a more excellent effect.

The fuel composition evaluation for the internal combustion engine of the present invention was evaluated by the European method (ECE15 + EUDC), which is the same method as described in Korean Patent Registration No. 10-0525362. As the comparison fuel, octane number # 93 unleaded gasoline fuel was used, and a fuel composition having a composition of Examples 1 to 6 of the present invention was used. In this case, the vehicle is measured using a VOLKSVAGEN Jetta FV7160Cix vehicle equipped with an ATK engine. GB18352.2-2001 (Exhaust gas measurement method), GB / T3845-93 (Exhaust gas measurement method) GB / T12543-90 (automotive power performance measurement) and GB1495-2002 (external vehicle noise measurement at high speed driving) were evaluated and analyzed. That is, the fuel was injected into the vehicle and traveled 200 km, and then the secondary measurement of the exhaust gas during idling, the primary measurement of the exhaust gas during driving, the primary measurement of fuel economy, the primary measurement of power performance, and the noise were measured first.

Table 1

Test Vehicle Specification
Vehicle model	JETTA FV7160Cix	Vehicle production plant	Meite Public Automobile Co., Ltd.
Vehicle weight	1130	Driving distance	89.787 km
Gear	5 steps	Displacement	1.6ℓ
Engine model	ATK	Tire pressure	225 kPa

TABLE 2

Test Laboratory Equipment
NO	Equipment, name of facilities	Model	Production Company
One	DC power chassis side air	CTDY-1211	Japan HORIBA
2	Round sample system	CVS 9100	Japan HORIBA
3	Automobile Exhaust Analysis System	MEXA 9400	Japan HORIBA
4	Portable Vehicle Exhaust Gas Analyzer	MEXA 554GE	Japan HORIBA
5	Lighting timing machine	4165 models	United States of America
6	Contactless speedometer	LC 5100	Japan ONO SOKKI
7	Star system	HS-5670	State-owned Hongseong Equipment Factory
8	Proofreader	HS-6080	State-owned Hongseong Equipment Factory
9	Speed table	SE-1520	Japan Ono
10	thermometer	SY ventilated	Japan Ono mill
11	Magnetic sensor wind direction and wind speed table	DEM5-1	Changchun Meteorological Plant

The results of the analysis of gasoline components and the evaluation results using this fuel composition of the Korea Petroleum Institute were as follows.

TABLE 3

Test Items	Gasoline Quality Standards		Gasoline Analysis Results (Normal Gasoline)	Analysis result of Example 1
Test Items	usually	Advanced	Gasoline Analysis Results (Normal Gasoline)	Analysis result of Example 1
Octane number	91-94	94 or more	92.9	99.6
Distillation phase (℃)	10% outflow temperature	70 or less		48.1	57.2
	50% outflow temperature	125 or less		82.5	73.7
	90% outflow temperature	175 or less		154.7	143.1
	End point	225 or less		202.8	172.3
	Residual volume (% by volume)	2.0 or less		1.0	1.0
Water and sediment (% by volume)	0.01 or less		Less than 0.005	Less than 0.002
Copper plate corrosion (50 ℃, 3h)	1 or less		One	0.4
Vapor Pressure (37.8 ℃, kpa)	44-96		72.6	69
Oxidation Stability (min)	480 or more		480 or more	480 or more
Washing presence gum (mg / 100ml)	5 or less		Less than 1	Less than 1
Sulfur (mg / kg)	50 or less		13	Less than 0.005
Lead Content (g / ℓ)	0.013 or less		Less than 0.001	Less than 0.001
Phosphorus content (g / ℓ)	0,0013 or less		Less than 0.0001	Less than 0.0001
Total aromatics (% by volume)	30 or less		16.29	14.7
Benzene (% by volume)	1 or less		0.96	Not detected
Olefin (volume%)	18 or less		14.8	1.0
Oxygen content (weight%)	0.5 ~ 2.3 or less		1.53	2.26
Methanol content (weight%)	0.1 or less		Less than 0.01	Not detected

In particular, in the present invention, even though there is no separate octane number improver, as a result of component analysis at the Korea National Oil Service, it was confirmed that it has a high octane number (99.6), in particular sulfur content is significantly reduced, benzene harmful to the human body is harmful Not detected. This is also an excellent advantage of the present invention.

Each component was mixed together according to the following composition to evaluate the fuel composition for the internal combustion engine of the present invention, the performance of the fuel was tested by the European evaluation method (ECE15 + EUDC), which is the same method as described in Korean Patent Registration No. 10-0525362. Are listed in the table below.

실시예 1 내지 6 및 비교예 1 내지 2Examples 1-6 and Comparative Examples 1-2

Example 1

1) 40% by weight biobutanol;

2) 40 wt% paraffinic hydrocarbon solvent (SK production, Solvent No. 1) and 5 wt% paraffinic hydrocarbon solvent (SK production, Solvent No. 5);

3) 7% by weight toluene; And

4) 8 wt% xylene

A fuel mixed with the fuel composition was prepared, and the performance was evaluated by the European evaluation method (ECE15 + EUDC). The results are shown in the following table.

Example 2

1) 42% by weight biobutanol;

2) 35 wt% hydrocarbon solvent 1 and 7 wt% hydrocarbon solvent 5;

3) 9% by weight of toluene;

4) 2% by weight aromatic hydrocarbon mixture Techsol-100 (GS-caltex produced);

5) 2% by weight of isopropanol;

6) 2 wt% of hynins; And

7) A fuel mixture consisting of 1% by weight of butyl cellosolve and 10% by weight of 90% by weight of 93 # lead-free gasoline was prepared to prepare a mixed fuel, and the performance was evaluated by the European evaluation method (ECE15 + EUDC). Are listed in the table below.

Example 3

1) 40% by weight of bio butanol;

3) 7% by weight of toluene; And

4) A fuel mixture composed of 8 wt% xylene fuel composition 40 wt% and 60 wt% 93 # lead-free gasoline was prepared, and performance evaluation was carried out using the European Evaluation Method (ECE15 + EUDC). It is listed in the table.

Example 4

1) 43 wt% biobutanol;

2) 35 wt% of paraffinic hydrocarbon solvent 1 and 4 wt% of hydrocarbon solvent 5;

3) 11 weight percent xylene;

4) 2% by weight aromatic hydrocarbon mixture Techsol-100 (GS-caltex produced);

5) 2% by weight of isopropanol;

6) 2 wt% of hynins; And

7) 1 wt% Butyl Cellosolve

The fuel composition was subjected to performance evaluation by the European method (ECE15 + EUDC) and the results are listed in the following table.

Example 5

1) 42% by weight biobutanol;

2) 35 wt% hydrocarbon solvent 1 and 5 wt% hydrocarbon solvent 5;

3) 10% by weight of toluene;

4) 2% by weight aromatic hydrocarbon mixture Techsol-100 (GS-caltex produced);

5) 2% by weight of isopropanol;

6) 2% by weight of hysine; And

7) 2% by weight of butyl cellosolve

Example 6

1) 40% by weight biobutanol;

2) 40 wt% paraffinic hydrocarbon solvent (SK production, Solvent No. 1) and 4.5 wt% paraffinic hydrocarbon solvent (SK production, Solvent No. 5);

3) 7% by weight of toluene;

4) 8 wt% xylene; And

5) 0.5 wt% biodiesel

A fuel mixed with the fuel composition was prepared, and performance evaluation was performed using the European evaluation method (ECE15 + EUDC). The results are listed in the following table.

As a result, emission reduction and fuel economy improvement were evident.

Comparative Example 1

1) The performance of 93 # lead-free gasoline (100% by weight) was evaluated using the European evaluation method (ECE15 + EUDC) and the results are shown in the following table.

Comparative Example 2

1) 36 wt% hydrocarbon solvent 1 and 6 wt% hydrocarbon solvent 5;

2) 10% by weight of toluene;

3) 2% by weight aromatic hydrocarbon mixture Techsol-100 (GS-caltex produced);

4) 40 wt% unleaded gasoline (93 #);

5) 2% by weight of isopropanol;

6) 2 wt% of hynins; And

7) 2% by weight of butyl cellosolve

Table 4

Emission test results during JETTA (VOLKSVAGEN) passenger car idling
Item	Idling speed	CO (%)	HC (PPM)
Example 1	800	0.00	<20
Example 2	800	0.00	<20
Example 3	800	0.00	<20
Example 4	800	0.00	<20
Example 5	800	0.00	<20
Example 6	800	0.00	<20
Comparative Example 1	800	0.00	<20
Comparative Example 2	800	0.00	<20

According to GB18352.2-2001 method, the exhaust gas was measured, and there was no pollution in the exhaust gas at idling because there was no increase in the exhaust gas after running the engine at idling and 200 km.

Table 5

JETTA (VOLKSVAGEN) passenger car pollutant emission and fuel economy test results
Item	HC (g / km)	CO (g / km)	NOX (g / km)	Fuel Consumption (ℓ / km)
Example 1	0.01	0.39	0.06	7.68
Example 2	0.05	0.60	0.16	8.00
Example 3	0.05	0.54	0.14	7.98
Example 4	0.04	0,45	0.09	7.74
Example 5	0.03	0,44	0.08	7.75
Example 6	0,02	0.40	0.06	7.70
Comparative Example 1	0.11	0.88	0.28	8.16
Comparative Example 2	0.08	0.70	0.19	8.08

As described above, in Example 1 (containing biobutanol, paraffinic hydrocarbon solvent, toluene, and xylene) than the comparative example 1 (lead-free gasoline), the effect of reducing contaminants and reducing fuel consumption was more remarkable.

In addition, in Example 6 (containing biobutanol, paraffinic hydrocarbon solvent, toluene, xylene, and biodiesel) than Comparative Example 1 (lead-free gasoline), contaminants and fuel consumption reduction effects were also clearly seen.

Table 6

JETTA (VOLKSVAGEN) Passenger Car Power Performance Test Result (Unit: Second)
Item	5-speed acceleration time	4-speed acceleration time
Example 1	21.87	19.54
Example 2	24.77	21.92
Example 3	24.66	21.91
Example 4	22,07	20.07
Example 5	22.16	20.08
Example 6	21,79	19.66
Comparative Example 1	25.98	23.00
Comparative Example 2	25.20	22.24

As shown above, the time required for the acceleration of the fourth and fifth gears after driving 200 km is compared to Comparative Example 1 (lead-free gasoline of general octane number 93), Example 6 (biobutanol, paraffinic hydrocarbon solvent, toluene, and xyl). Mixtures of lene and biodiesel) show rapid acceleration.

TABLE 7

Noise measurement during JETTA (VOLKSVAGEN) passenger car acceleration
(1) Test result after driving 200 km of Comparative Example 1
only	location	Engine speed	Engine speed	Left / Right Angle Average	Intermediate results	Max Noise
2-stage	left side	3800	4100	73.4	73.5	73.9
2-stage	right	3800	4100	73.6	73.5
3-stage	left side	2800	3050	73.9	74.3
3-stage	right	2500	3050	74.6	74.3
Background noise 54.6
(2) Test result after driving 200km of Example 1
only	location	Engine speed	Engine speed	Left / Right Angle Average	Intermediate results	Max Noise
2-stage	left side	3800	4100	71.8	71.3	70.7
2-stage	right	3800	4100	70.7	71.3
3-stage	left side	2800	3050	70.0	70.0
3-stage	right	2800	3050	70.0	70.0
Background noise 54.3
(3) Test result after driving 200km of Example 2
only	location	Engine speed	Engine speed	Left / Right Angle Average	Intermediate results	Max Noise
2-stage	left side	3800	4100	73.7	73.4	73.0
2-stage	right	3800	4100	73.1	73.4
3-stage	left side	2800	3050	72.5	72.6
3-stage	right	2800	3050	72.6	72.6
Background noise 54.4
(4) Test result after 200 km of driving of Example 3
only	location	Engine speed	Engine speed	Left / Right Angle Average	Intermediate results	Max Noise
2-stage	left side	3800	4100	72.9	72.3	72.4
2-stage	right	3800	4100	71.7	72.3
3-stage	left side	2800	3050	72.3	72.5
3-stage	right	2800	3050	72.7	72.5
Background noise 54.3
(5) Test result after 200 km of driving of Example 4
only	location	Engine speed	Engine speed	Left / Right Angle Average	Intermediate results	Max Noise
2-stage	left side	3800	4100	72.5	72.0	72.3
2-stage	right	3800	4100	71.4	72.0
3-stage	left side	2800	3050	72.6	72.5
3-stage	right	2800	3050	72.4	72.5
Background noise 54.4
(6) Test result after 200 km of driving of Example 5
only	location	Engine speed	Engine speed	Left / Right Angle Average	Intermediate results	Max Noise
2-stage	left side	3800	4100	74.5	73.4	72.4
2-stage	right	3800	4100	72,6	73.4
3-stage	left side	2800	3050	71.3	71.3
3-stage	right	2800	3050	71.2	71.3
Background noise 54.6
(7) Test result after 200 km of driving of Example 6
only	location	Engine speed	Engine speed	Left / Right Angle Average	Intermediate results	Max Noise
2-stage	left side	3800	4100	72.0	72.0	71.6
2-stage	right	3800	4100	72.0	72.0
3-stage	left side	2800	3050	71.3	71.1
3-stage	right	2800	3050	70.9	71.1
Background noise 54.6

As can be seen from the noise measurement results, it can be seen that the overall noise reduction effect is very excellent.

Claims

With respect to the total weight of the composition,

a) 1 to 88% by weight Biobutanol or a mixture of biobutanol and butanol;

b) 3-75 wt% paraffinic hydrocarbon solvent;

c) 3 to 35 weight percent toluene; And

d) A fuel composition for an internal combustion engine, characterized by containing 6 to 30% by weight of xylene.
The fuel composition of claim 1, wherein the fuel composition includes 1 to 85% by weight of aliphatic alkanes and alicyclic alkanes having 5 to 40 carbon atoms, 1 to 43% by weight of kerosene (Kerosens), and 1 to 32% by weight of hysene (Hi-Sene). ), 1-36 wt% Hi-nine, 0.1-5 wt% lubricant base oil, 1-9 wt% butyl cellosolve, 1-11 wt% ethyl cellosolve, 1-13 A fuel composition for an internal combustion engine, characterized by further comprising at least one component selected from the group consisting of wt% isopropanol, 1-12 wt% isobutanol, and 1-19 wt% aromatic hydrocarbon mixture.
The fuel composition according to claim 1, wherein the fuel composition further comprises 0.001 to 6% by weight of rosin, rosin derivative, rosin acid compound, or a mixture thereof.
The fuel composition of claim 1, wherein the fuel composition further comprises 0.01 to 85% by weight of biodiesel.
An alternative fuel for an internal combustion engine, wherein the fuel composition according to any one of claims 1 to 4 is used alone or mixed with an internal combustion engine fuel or an alcohol fuel.