JP2000073073A - Unleaded gasoline - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prepare unleaded gasoline capable of drawing out exhaust gas purifying ability, fuel consumption and running performance up to the maximum level with well balance by meeting specific requirements and by including specific groups of ingredients in a specific content ratio. SOLUTION: This unleaded gasoline has >=96 research octane number, >=84 motor octane number, 0.72-0.77 g/cm3 density (15 deg.C), 44-93 kPa vapor pressure, 20-37 deg.C initial boiling point, 35-70 deg.C, 55-77 deg.C, 75-105 deg.C, 100-130 deg.C and 115-180 deg.C running temperatures at 10%, 30%, 50%, 70% and 90% respectively, 150-220 deg.C distribution end point, 20-45 vol.% aromatic content, 0-25 vol.% olefin content, 0-50 ppm sulfur content, 0-5 vol.% benzene, and 0-15 vol.% methyl-t-butyl ether. When grouping ingredients in the unleaded gasoline into groups A-G, the content of each group exists in a specific range (wt.%). The unleaded gasoline can clear regulation value for exhaust gas and is also excellent in combustibility.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel unleaded gasoline, and more particularly, to an unleaded gasoline which satisfies various performances required as a fuel oil for automobiles in a well-balanced manner.

[0002]

2. Description of the Related Art In recent years, reduction of harmful substances contained in automobile exhaust gas has been demanded from the viewpoint of atmospheric environment conservation. Regarding the emissions of gasoline passenger cars, in 2000, carbon monoxide, hydrocarbons and nitrogen oxides in
It is expected that a new regulatory value will be introduced, which will reduce the annual regulatory value by 68%. In order to comply with this regulation, it is necessary to increase the capacity of the exhaust gas purifying catalyst on the automobile side and more precisely electronically control the fuel injection timing and the fuel injection amount. In such automobiles, in order to bring out the fuel consumption characteristics and the driving performance together with the exhaust gas purifying ability to the highest level in a well-balanced manner, gasoline, which is the fuel thereof, also needs to have a well-balanced quality. However, gasoline optimized to satisfy these various performances in a well-balanced manner has not been obtained until now.

[0003]

SUMMARY OF THE INVENTION In view of the above circumstances, the present invention is a lead-free lead-free gas-fueled vehicle that performs precise electronic control, and achieves exhaust gas purification performance, fuel economy characteristics, and driving performance in a well-balanced manner. The purpose is to provide gasoline.

[0004]

That is, the unleaded gasoline according to the present invention is an unleaded gasoline that satisfies all of the following conditions (1) to (16). ) Motor method octane number is 84 or more. (3) Density (15 ° C.) is 0.72 to 0.77 g / cm ³ (4) Vapor pressure is 44 to 93 kPa (5) Initial distillation point is 20 to 37 ° C. (6) (7) 30% distillation temperature is 55-77 ° C. (8) 50% distillation temperature is 75-105 ° C. (9) 70% distillation temperature is 100-130 ° C. 10) 90% distillation temperature is 115-180 ° C (11) Distillation end point is 150-220 ° C (12) Aromatic content 20-45% by volume (13) Olefin content 0-25% by volume (14) Sulfur content 0 -50 ppm (15) Benzene content 0-5 volume (16) Methyl -t- butyl ether (MTBE) content 0-15% by volume

[0005] Each component in unleaded gasoline is divided into the following groups. Group A: propane, 2-methylpropane (isobutane), 1-butene, 2-methylpropene (isobutylene), n-butane, t- 2-butene, 2,2-dimethylpropane, c-2-butene, 3-methyl-1-butene,
2-methylbutane (isopentane)

Group B: 1-pentene, 2-methyl-
1-butene, n-pentane, 2-methyl-1,3-butadiene (isoprene), t-2-pentene, 3,3-dimethyl-1-butene, c-2-pentene, 2-methyl-
2-butene, 1-t, 3-pentadiene, cyclopentadiene, 2,2-dimethylbutane, cyclopentene,
-Methyl-1-pentene, 3-methyl-1-pentene,
Cyclopentane, 2,3-dimethylbutane, methyl-t
-Butyl ether (MTBE), 2,3-dimethyl-1
-Butene, 4-methyl-c-2-pentene, 2-methylpentane

Group C: 4-methyl-t-2-pentene, 3-methylpentane, 2-methyl-1-pentene,
1-hexene, n-hexane, t-3-hexene, c-
3-hexene, t-2-hexene, 2-methyl-2-pentene, 3-methyl-c-2-pentene, 3-methylcyclopentene, c-2-hexene, 3-methyl-t-2
-Pentene, 2,2-dimethylpentane, methylcyclopentane, 2,4-dimethylpentane, 2,3,3-trimethyl-1-butene, 2,2,3-trimethylbutane, 3,4-dimethyl-1- Pentene, 4,4-dimethyl-c-2-pentene, 2,4-dimethyl-1-pentene, 1-methylcyclopentene, benzene, 2-methyl-c-3-hexene, 3,3-dimethylpentane, 5-
Methyl-1-hexene, cyclohexane, 2-methyl-
t-3-hexene, 2-methyl-3-ethyl-1-butene, 4-methyl-1-hexene

Group D: 4-methyl-c-2-hexene, 2-methylhexane, 2,3-dimethylpentane,
1,1-dimethylcyclopentane, cyclohexene, 3
-Methylhexane, 3,4-dimethyl-c-2-pentene, 1-c, 3-dimethylcyclopentane, 1-t, 3
-Dimethylcyclopentane, 3-ethylpentane, 1-
t, 2-dimethylcyclopentane, 2,2,4-trimethylpentane, 1-heptene, 2-ethyl-1-pentene, 3-methyl-c-3-hexene, t-3-heptene, n-heptane, 2 -Methyl-2-hexene, 3-methyl-c-2-hexene, t-2-heptene, 3-ethyl-2-pentene, 3-methyl-t-2-hexene, c
-2-heptene, 1-c, 2-dimethylcyclopentane, methylcyclohexane, 2,2-dimethylhexane, ethylcyclopentane, 2,5-dimethylhexane, 2,2,3-trimethylpentane, 2,4-dimethyl Hexane

Group E: 1-c, 2-t, 4-trimethylcyclopentane, 3,3-dimethylhexane, 1-c
t, 2-c, 3-trimethylcyclopentane, 2,3
4-trimethylpentane, toluene, 2,3-dimethylhexane, 1,1,2-trimethylcyclopentane,
-Methylheptane, 4-methylheptane, 3,4-dimethylhexane, 1-c, 3-dimethylcyclohexane,
3-methylheptane, 3-ethylhexane, 1-t, 4
-Dimethylcyclohexane, 1,3-octadiene,
1,1-dimethylcyclohexane, 2,2,5-trimethylhexane, 3-c-ethylmethylcyclopentane,
3-t-ethylmethylcyclopentane, 2-t-ethylmethylcyclopentane, 1,1-ethylmethylcyclopentane, 2,2,4-trimethylhexane, 1-t, 2
-Dimethylcyclohexane, t-4-octene, 1-
c, 2-c, 3-trimethylcyclopentane, 1-t,
3-dimethylcyclohexane, n-octane, 2-octene, 2,3,5-trimethylhexane, 2,2-dimethylheptane, ethylcyclohexane, 2,6-dimethylheptane, 2,4-dimethylheptane, 4,4- Dimethylheptane, n-propylcyclopentane, 1-c,
3-c, 5-trimethylcyclohexane, 2,5-dimethylheptane, 3,5-dimethylheptane, 3,3-dimethylheptane, 1,1,3-trimethylcyclohexane

Group F: 2,4-dimethyl-1-heptene, ethylbenzene, 1-c, 2-t, 4-trimethylcyclohexane, 2-methyl-1-octene, 2-methyl-2-octene, 1,3 -Dimethylbenzene (m-
Xylene), 1,4-dimethylbenzene (p-xylene), 3,4-dimethylheptane, 4-ethylheptane, 4-methyloctane, 2-methyloctane, 3-ethylheptane, 3-methyloctane, 1-c , 2-t,
4-c-trimethylcyclohexane, 1,2-dimethylbenzene (o-xylene), 1-nonene, isobutylcyclopentane, c-2-nonene, t-3-nonene, n-
Nonane, 1,1-methylethylcyclohexane, t-
2,2,5,5-tetramethyl-3-hexene, isopropylbenzene, c-3-nonene, 2,2-dimethyloctane, 2,4-dimethyloctane, 2,6-dimethyloctane, 2,5-dimethyl Octane, n-butylcyclopentane, 3,3-dimethyloctane, n-propylbenzene, 3-methyl-5-ethylheptane, 1,3-
Methylethylbenzene, 1,4-methylethylbenzene, 1,3,5-trimethylbenzene, 5-methylnonane, 1,2-methylethylbenzene, 2-methylnonane, 3-methylnonane, 3-ethyl-2-methyl-2-
Heptene, 1,2,4-trimethylbenzene, isobutylcyclohexane, 1-decene, isobutylbenzene,
sec-butylbenzene, n-decane, 1,2,3-trimethylbenzene, 1,3-methylisopropylbenzene, 1,4-methylisopropylbenzene, 2,3-dihydroindene (indane)

Group G: sec-butylcyclohexane, 1,2-methylisopropylbenzene, 3-ethylnonane, 1,3-diethylbenzene, 1,3-methyl-
n-propylbenzene, 1,4-methyl-n-propylbenzene, n-butylbenzene, 1,3-dimethyl-5
-Ethylbenzene, 1,2-diethylbenzene, 1,2
-Methyl-n-propylbenzene, 1,4-dimethyl-
2-ethylbenzene, 1,3-dimethyl-4-ethylbenzene, 1,2-dimethyl-4-ethylbenzene, 1,
3-dimethyl-2-ethylbenzene, 1-undecene,
1,4-methyl-t-butylbenzene, 1,2-dimethyl-3-ethylbenzene, n-undecane, 1,2,2
4,5-tetramethylbenzene, 1,2,3,5-tetramethylbenzene, 5-methylindane, 4-methylindane, 1,2-ethyl-n-propylbenzene, 1,
3-diisopropylbenzene, 1,2-diisopropylbenzene, 1,4-diisopropylbenzene, tetrahydronaphthalene, naphthalene, 1,4-ethyl-t-butylbenzene, 1,3-di-n-propylbenzene, n
-Dodecane, 2-methylnaphthalene, n-tridecane,
1-methylnaphthalene, n-tetradecane

The content of each group satisfies the following conditions based on the total amount of unleaded gasoline.

Group A: 5 to 32% by mass Group B: 10 to 25% by mass Group C: 1 to 18% by mass Group D: 2 to 18% by mass Group E: 10 to 45% by mass Group F: 3 to 38% by mass % Group G: 0 to 5% by mass Total amount of Groups A to G: 85 to 100% by mass

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Various conditions imposed on the unleaded gasoline of the present invention will be described in detail below.

The unleaded gasoline of the present invention is a gasoline that does not substantially contain an alkyl lead compound such as tetraethyl lead, and even if it contains a trace amount of a lead compound, its content is JIS K 2255 “in gasoline. Or lower than the applicable category lower limit of “Lead content test method”.

In the present invention, if the above conditions are satisfied, unleaded gasoline satisfying various performance requirements can be obtained in a well-balanced manner. Especially in winter and summer, unleaded gasoline is often made separately. Accordingly, in the following, the description will be made separately for unleaded gasoline for winter and unleaded gasoline for summer.

<Unleaded Gasoline for Winter> First, unleaded gasoline for winter will be described in detail. The unleaded gasoline for winter here can be used in a temperature range of about −30 ° C. to 25 ° C., and is particularly suitable for use in a temperature range of −25 to 10 ° C.

(1) The unleaded gasoline of the present invention has a research octane number (RON) of 96 or more, preferably 98 or more, more preferably 99.5 or more, and most preferably 10 or more.
0 or more. In the unleaded gasoline of the present invention, RON
Is less than 96, knocking may occur, and the output may decrease in premium-spec vehicles.

(2) The unleaded gasoline of the present invention has a motor octane number (MON) of 84 or more, preferably 86 or more, more preferably 87 or more, and most preferably 87.5.
That is all. If the octane number by the motor method is less than 84, knocking may occur during high-speed running, and the output may decrease in premium-spec vehicles.

Here, the octane number of the research method and the
The octane number of the tar method is defined by JIS K 228, respectively.
0 means the octane number of the research method and the octane number of the motor method measured by "Octane number and cetane number test method".

(3) Density of unleaded gasoline of the present invention (15
° C.) is 0.72~0.77g / cm ^3. Density is 0.72 g / c because fuel efficiency may be deteriorated.
m ³ or more, preferably 0.725 g / cm ³ or more, more preferably 0.73 g / cm ³ or more. On the other hand, such that there is a possibility that smoldering occurs acceleration of deterioration and the spark plug, 0.77 g / cm ³ or less, preferably 0.765 g / cm ³ or less, more preferably 0.755 g / cm ³ or less, Most preferably 0.7
It is necessary to be 52 g / cm ³ or less.

Here, the density refers to JIS K 2249.
"Crude oil and petroleum products
Means the density measured by the "capacity conversion table".

(4) The vapor pressure of the unleaded gasoline of the present invention is
44 to 93 kPa. Since the hydrocarbons in the exhaust gas may increase and the operability failure due to the vapor lock may occur, the vapor pressure becomes 93 k.
Pa or less, preferably 83 kPa or less. In addition, it is necessary that the pressure be 44 kPa or more, preferably 50 kPa or more, more preferably 55 kPa or more, and still more preferably 60 kPa or more, since there is a possibility that a problem may occur in low-temperature startability. The term "vapor pressure" as used herein means a vapor pressure (lead vapor pressure (RVP)) measured according to JIS K 2258, "Crude oil and fuel oil vapor pressure test method (lead method)".

(5) to (11) The unleaded gasoline of the present invention is JIS K 2254 "Petroleum products-Distillation test method".
(5) Distillation initial boiling point (initial boiling point) is 20 to 37 ° C. (6) 10% distillation temperature (T10) is 35 to 70 ° C. (7) 30% distillation temperature ( (T30) 55-77 ° C (8) 50% distillation temperature is (T50) 75-105 ° C (9) 70% distillation temperature is (T70) 100-130 ° C (10) 90% distillation temperature is (T90) ) 115-180 ° C (11) It is necessary that the distillation end point (end point) is 150-220 ° C.

The initial boiling point is set to 20 ° C. or higher, preferably 23 ° C., because hydrocarbons in the exhaust gas may increase.
It is necessary to be higher than or equal to ° C. On the other hand, it is necessary that the temperature be 37 ° C. or lower, preferably 35 ° C. or lower, and more preferably 34 ° C. or lower, since a problem may occur in low-temperature operability.

T10 is preferably 35 ° C. or higher, and more preferably 38 ° C. or higher, because hydrocarbons in the exhaust gas may increase and operability failure due to vapor lock may occur. is necessary. On the other hand, since there is a possibility that a problem may occur in the low temperature startability,
It is necessary that the temperature be 60 ° C. or lower, more preferably 55 ° C. or lower.

T30 is 55% because fuel economy is deteriorated.
It is necessary to be higher than or equal to ° C. On the other hand, it is necessary that the temperature be 77 ° C. or lower, preferably 75 ° C. or lower, more preferably 70 ° C. or lower, since there is a possibility that a problem may occur in the medium-low temperature operation.

At T50, there is a possibility that fuel efficiency may be deteriorated.
It is necessary to be 75 ° C. or higher, preferably 78 ° C. or higher because hydrocarbons in the exhaust gas may increase. On the other hand, since there is a possibility that trouble may occur in the medium-low temperature operation and the hydrocarbon in the exhaust gas may increase, the temperature is 105 ° C or less, preferably 100 ° C or less, more preferably 95 ° C or less. is necessary.

T70 is required to be 100 ° C. or higher, preferably 105 ° C. or higher, because fuel efficiency may deteriorate. On the other hand, there is a possibility that the low-temperature operability at the time of cold operation may be defective, there is a possibility that hydrocarbons in the exhaust gas may increase, there is a possibility that the intake valve deposit and the combustion chamber deposit may increase, The temperature must be 130 ° C. or lower, preferably 128 ° C. or lower, because smoldering may occur.

T90 is required to be 115 ° C. or more, preferably 120 ° C. or more, since fuel efficiency may be deteriorated. On the other hand, there is a possibility that the low-temperature operability at the time of cold operation may be defective, there is a possibility that hydrocarbons in the exhaust gas may increase, there is a possibility that the intake valve deposit and the combustion chamber deposit may increase, The temperature must be 180 ° C. or lower, preferably 165 ° C. or lower, more preferably 160 ° C. or lower, because smoldering may occur.

The end point needs to be 150 ° C. or higher, preferably 160 ° C. or higher, because fuel efficiency may deteriorate. On the other hand, the intake valve deposit and the combustion chamber deposit may increase and may cause smoldering of the spark plug. is necessary.

(12) The aromatic content of the unleaded gasoline of the present invention may be 20
It must be at least 25% by volume, preferably at least 25% by volume. Further, since the intake valve deposit and the combustion chamber deposit may increase, the smoldering of the spark plug may occur, and the benzene in the exhaust gas may increase, it is preferably 45% by volume or less. Should be 42% by volume or less.

(13) The olefin content of the unleaded gasoline of the present invention is 0% by volume or more, preferably 5% by volume or more. Further, the olefin content is 25% by volume or less, preferably 20% by volume or less, because the oxidation stability of unleaded gasoline may be deteriorated and the nitrogen oxides in the exhaust gas may increase. It is necessary to be.

Here, the aromatic content and the olefin content are values measured by a fluorescent indicator adsorption method in JIS K2536 "Petroleum products-component test method".

(14) The unleaded gasoline of the present invention has a sulfur content of 50 ppm or less, based on the total amount of unleaded gasoline, because carbon monoxide, hydrocarbons and nitrogen oxides in the exhaust gas may increase. , Preferably 30 ppm or less,
More preferably 20 ppm or less, most preferably 10 p
pm or less.

Here, the sulfur content is defined as JIS K254.
1 means the sulfur content measured by "Crude oil and petroleum products-Sulfur content test method".

(15) The unleaded gasoline of the present invention has a benzene content of 0 to 5% by volume, preferably 0 to 3% by volume, based on the total amount of unleaded gasoline, since benzene in the exhaust gas may increase. , More preferably 0 to 1% by volume,
Even more preferably, it must be 0 to 0.5% by volume.

(16) The unleaded gasoline of the present invention has a methyl-t-butyl ether (MTBE) content of 0 to 15 vol. %, Preferably 0 to 7% by volume, more preferably 0 to 6% by volume.

Here, the contents of benzene and MTBE are as follows:
It means the content measured according to "the method for testing all components by gas chromatography" of JIS k 2536 "Petroleum products-method for testing components".

The unleaded gasoline of the present invention satisfies the above-mentioned conditions and divides each component contained in the unleaded gasoline into groups A to G. It is necessary to meet.

Group A: 5 to 32% by mass Group B: 10 to 25% by mass Group C: 1 to 18% by mass Group D: 2 to 18% by mass Group E: 10 to 45% by mass Group F: 3 to 38% by mass % Group G: 0 to 5% by mass Total amount of Groups A to G: 85 to 100% by mass

Group A comprises propane, 2-methylpropane (isobutane), 1-butene, 2-methylpropene (isobutylene), n-butane, t-2-butene, 2,
2-dimethylpropane, c-2-butene, 3-methyl-
1-butene and 2-methylbutane (isopentane). The content of Group A (total amount, based on the total amount of unleaded gasoline; the same applies hereinafter) is 5% by mass or more, preferably 8% by mass or more, and more preferably 10% by mass, because a problem may occur in low-temperature startability. As described above, it is still more preferably 12% by mass or more, and most preferably 15% by mass or more. In addition, there is a possibility that hydrocarbons in the exhaust gas may increase, and a drivability defect due to vapor lock may occur.
Should be 32% by mass or less, preferably 30% by mass or less, more preferably 25% by mass or less, and even more preferably 20% by mass or less.

The content of each component of Group A is not particularly limited, but is preferably as follows.

Propane: 0 to 2% by mass, preferably 0 to 2% by mass
1% by mass, more preferably 0 to 0.5% by mass 2-methylpropane (isobutane): 0% by mass or more, preferably 0.1% by mass or more, more preferably 0.3% by mass or more, still more preferably 0.5% by mass or more, most preferably 1% by mass or more and 5% by mass or less, preferably 4% by mass or less.
1 mass% or less 1-butene: 0-4 mass%, preferably 0-3 mass% 2-methylpropene (isobutylene): 0-3 mass%,
Preferably 0 to 1% by mass, more preferably 0 to 0.5% by mass n-butane: 0% by mass or more, preferably 1.0% by mass or more, more preferably 1.5% by mass or more and 10% by mass or less , Preferably 7% by mass or less, more preferably 5% by mass.
Or less, more preferably 4% by mass or less, t-2-butene: 0 to 3% by mass, preferably 0 to 2.5%
% By mass 2,2-dimethylpropane: 0 to 1% by mass, preferably 0 to 0.5% by mass c-2-butene: 0 to 2% by mass, preferably 0 to 1.5% by mass
% By mass 3-methyl-1-butene: 0 to 2% by mass, preferably 0%
１1% by mass 2-methylbutane (isopentane): 0% by mass or more, preferably 5% by mass or more, more preferably 7% by mass or more,
Even more preferably, 8% by mass or more and 30% by mass or less,
Preferably 25% by mass or less, more preferably 20% by mass
Or less, more preferably 17% by mass or less, and most preferably 15% by mass or less.

Group B includes 1-pentene, 2-methyl-1-butene, n-pentane, 2-methyl-1,3-butadiene (isoprene), t-2-pentene, 3,3-
Dimethyl-1-butene, c-2-pentene, 2-methyl-2-butene, 1-t, 3-pentadiene, cyclopentadiene, 2,2-dimethylbutane, cyclopentene,
4-methyl-1-pentene, 3-methyl-1-pentene, cyclopentane, 2,3-dimethylbutane, methyl-t-butyl ether (MTBE), 2,3-dimethyl-1-butene, 4-methyl-c -2-pentene and 2-methylpentane. The content of Group B (total amount, based on the total amount of unleaded gasoline; the same applies hereinafter) is 10% by mass or more, preferably 14% by mass or more, and more preferably 16% by mass, because there is a possibility that a problem may occur in the medium-low temperature operation. %. Further, the content of Group B may be 25% by mass or less, preferably 23% by mass or less, because fuel efficiency may be deteriorated and nitrogen oxides in exhaust gas may increase. is necessary.

The contents of the individual components of Group B are not particularly limited, but are preferably as follows.

1-pentene: 0 to 2% by mass, preferably 0 to 1.5% by mass 2-methyl-1-butene: 0% by mass or more, preferably 0.1% by mass or more, more preferably 0.5% by mass or more Mass% or more,
4% by mass or less, preferably 3% by mass or less n-pentane: 0% by mass or more, preferably 0.5% by mass
Or more, more preferably 0.8% by mass or more, still more preferably 1% by mass or more and 10% by mass or less, preferably 6% by mass or less.
2% by mass or less, more preferably 5% by mass or less, still more preferably 4% by mass or less 2-methyl-1,3-butadiene (isoprene): 0 to 0%
1% by mass, preferably 0 to 0.5% by mass, more preferably 0 to 0.1% by mass t-2-pentene: 0% by mass or more, preferably 0.1% by mass or more, more preferably 0.5% by mass 5% by mass or more
Or less, preferably 4% by mass or less 3,3-dimethyl-1-butene: 0 to 1% by mass, preferably 0 to 0.5% by mass c-2-pentene: 0 to 3% by mass, preferably 0 to 2% by mass 0.5% by mass 2-methyl-2-butene: 0% by mass or more, preferably 0.1% by mass or more, more preferably 0.5% by mass or more,
Still more preferably, 1% by mass or more and 6% by mass or less, preferably 5% by mass or less 1-t, 3-pentadiene: 0 to 1% by mass, preferably 0 to 0.5% by mass, more preferably 0 to 0% by mass. 0.1% by mass cyclopentadiene: 0 to 1% by mass, preferably 0 to 1% by mass
0.5% by mass, more preferably 0 to 0.1% by mass 2,2-dimethylbutane: 0 to 2% by mass, preferably 0%
Cyclopentene: 0 to 2% by mass, preferably 0 to 1% by mass 4-methyl-1-pentene: 0 to 2% by mass, preferably 0 to 1% by mass 3-methyl-1-pentene: 0 to 2% by mass, preferably 0 to 1% by mass cyclopentane: 0 to 2% by mass, preferably 0 to 1% by mass 2,3-dimethylbutane: 0% by mass or more, preferably 0.5% by mass or more; More preferably 0.8% by mass or more,
Still more preferably, 1% by mass or more and 4% by mass or less, preferably 3% by mass or less. Methyl-t-butyl ether (MTBE): 0 to 15% by mass, preferably 0 to 7% by mass, more preferably 0 to 6% by mass.
% By mass 2,3-dimethyl-1-butene: 0 to 2% by mass, preferably 0 to 1% by mass 4-methyl-c-2-pentene: 0 to 2% by mass, preferably 0 to 1% by mass 2- Methylpentane: 0% by mass or more, preferably 0.5%
% By mass or more, more preferably 1% by mass or more, still more preferably 2% by mass or more and 10% by mass or less, preferably 6% by mass or less, more preferably 5% by mass or less.

Group C includes 4-methyl-t-2-pentene, 3-methylpentane, 2-methyl-1-pentene, 1-hexene, n-hexane, t-3-hexene,
c-3-hexene, t-2-hexene, 2-methyl-2
-Pentene, 3-methyl-c-2-pentene, 3-methylcyclopentene, c-2-hexene, 3-methyl-t
-2-pentene, 2,2-dimethylpentane, methylcyclopentane, 2,4-dimethylpentane, 2,3,3
-Trimethyl-1-butene, 2,2,3-trimethylbutane, 3,4-dimethyl-1-pentene, 4,4-dimethyl-c-2-pentene, 2,4-dimethyl-1-pentene, 1- Methylcyclopentene, benzene, 2-methyl-c-3-hexene, 3,3-dimethylpentane, 5
-Methyl-1-hexene, cyclohexane, 2-methyl-t-3-hexene, 2-methyl-3-ethyl-1-butene, 4-methyl-1-hexene. The content of Group C (total amount, based on the total amount of unleaded gasoline; the same applies hereinafter) is 1% by mass or more, preferably 2% by mass or more, and more preferably 3% by mass because there is a possibility that a problem may occur in the medium-low temperature operation. %, More preferably 5% by mass or more. Further, since the fuel efficiency may be deteriorated, the content of Group C is 18% by mass or less,
Preferably 16% by mass or less, more preferably 14% by mass
Below, it is still more preferably 12% by mass or less.

The contents of the individual components of Group C are not particularly limited, but are preferably as follows.

4-methyl-t-2-pentene: 0 to 2% by mass, preferably 0 to 1% by mass 3-methylpentane: 0% by mass or more, preferably 0.5% by mass
% By mass or more, more preferably 1% by mass or more, still more preferably 2% by mass or more and 6% by mass or less, preferably 5% by mass or less.
Mass% or less 2-methyl-1-pentene: 0 to 2 mass%, preferably 0 to 1.5 mass% 1-hexene: 0 to 2 mass%, preferably 0 to 1 mass% n-hexane: 0 to 6 % By mass, preferably 0 to 5% by mass t-3-hexene: 0 to 2% by mass, preferably 0 to 1% by mass c-3-hexene: 0 to 2% by mass, preferably 0 to 1% by mass t- 2-hexene: 0 to 2% by mass, preferably 0 to 1.
5% by mass 2-methyl-2-pentene: 0 to 2% by mass, preferably 0 to 1.5% by mass 3-methyl-c-2-pentene: 0 to 2% by mass, preferably 0 to 1.5% by mass % 3-methylcyclopentene: 0 to 1% by mass, preferably 0 to 0.5% by mass c-2-hexene: 0 to 2% by mass, preferably 0 to 1% by mass 3-methyl-t-2-pentene: 0 to 2% by mass, preferably 0 to 1.5% by mass 2,2-dimethylpentane: 0 to 2% by mass, preferably 0 to 1% by mass methylcyclopentane: 0 to 3% by mass, preferably 0 to 0% by mass
2.5% by mass 2,4-dimethylpentane: 0 to 2% by mass, preferably 0 to 1.5% by mass 2,3,3-trimethyl-1-butene: 0 to 1% by mass,
Preferably 0 to 0.5% by mass 2,2,3-trimethylbutane: 0 to 1% by mass, preferably 0 to 0.5% by mass 3,4-dimethyl-1-pentene: 0 to 1% by mass, preferably Is 0 to 0.5% by mass 4,4-dimethyl-c-2-pentene: 0 to 1% by mass,
Preferably 0-0.5% by mass 2,4-dimethyl-1-pentene: 0-1% by mass, preferably 0-0.5% by mass 1-methylcyclopentene: 0-2% by mass, preferably 0-1% 0.5% by mass Benzene: 0 to 1% by mass 2-methyl-c-3-hexene: 0 to 1% by mass, preferably 0 to 0.5% by mass 3,3-dimethylpentane: 0 to 2% by mass, preferably 0 to 1% by mass 5-methyl-1-hexene: 0 to 1% by mass, preferably 0 to 0.5% by mass cyclohexane: 0 to 2% by mass, preferably 0 to 1% by mass 2-methyl-t- 3-hexene: 0 to 1% by mass, preferably 0 to 0.5% by mass 2-methyl-3-ethyl-1-butene: 0 to 1% by mass,
Preferably 0 to 0.5% by mass 4-methyl-1-hexene: 0 to 1% by mass, preferably 0 to 0.5% by mass

Group D includes 4-methyl-c-2-hexene, 2-methylhexane, 2,3-dimethylpentane, 1,1-dimethylcyclopentane, cyclohexene, 3-methylhexane, 3,4-dimethyl- c-2-
Pentene, 1-c, 3-dimethylcyclopentane, 1-
t, 3-dimethylcyclopentane, 3-ethylpentane, 1-t, 2-dimethylcyclopentane, 2,2,4
-Trimethylpentane, 1-heptene, 2-ethyl-1
-Pentene, 3-methyl-c-3-hexene, t-3-
Heptene, n-heptane, 2-methyl-2-hexene,
3-methyl-c-2-hexene, t-2-heptene, 3
-Ethyl-2-pentene, 3-methyl-t-2-hexene, c-2-heptene, 1-c, 2-dimethylcyclopentane, methylcyclohexane, 2,2-dimethylhexane, ethylcyclopentane, 2,5 -Dimethylhexane, 2,2,3-trimethylpentane and 2,4-dimethylhexane. Since the drivability may deteriorate, the content of Group D (total amount, based on the total amount of unleaded gasoline; the same applies hereinafter) is 2% by mass or more, preferably 4% by mass.
It is necessary to be at least 5 mass%. Further, since the fuel efficiency may be deteriorated, the content of Group D is 18% by mass or less, preferably 17% by mass or less, more preferably 15% by mass or less, still more preferably 13% by mass or less, and most preferably. Is 10% by mass
It must be:

The content of each component in Group D is not particularly limited, but is preferably as follows.

4-methyl-c-2-hexene: 0 to 2% by weight, preferably 0 to 1% by weight 2-methylhexane: 0 to 5% by weight, preferably 0 to 4%
% By mass 2,3-dimethylpentane: 0 to 2% by mass, preferably 0 to 1.5% by mass 1,1-dimethylcyclopentane: 0 to 1% by mass, preferably 0 to 0.5% by mass cyclohexene: 0 To 1% by mass, preferably 0 to 0.5%
% By mass 3-methylhexane: 0 to 5% by mass, preferably 0 to 4%
% By mass 3,4-dimethyl-c-2-pentene: 0 to 1% by mass,
Preferably 0 to 0.5% by mass 1-c, 3-dimethylcyclopentane: 0 to 2% by mass,
Preferably 0 to 1% by mass 1-t, 3-dimethylcyclopentane: 0 to 2% by mass,
Preferably 0 to 1% by mass 3-ethylpentane: 0 to 2% by mass, preferably 0 to 1%
Mass% 1-t, 2-dimethylcyclopentane: 0 to 2 mass%,
Preferably 0 to 1% by mass 2,2,4-trimethylpentane: 0% by mass or more, preferably 0.1% by mass or more, more preferably 0.5% by mass
As described above, still more preferably 1% by mass or more, most preferably 2% by mass or more, 20% by mass or less, preferably 15% by mass or less, more preferably 12% by mass or less, still more preferably 10% by mass or less, most preferably 7% by mass or less 1-heptene: 0 to 1% by mass, preferably 0 to 0.5% by mass 2-ethyl-1-pentene: 0 to 1% by mass, preferably 0 to 0.5% by mass 3-methyl- c-3-hexene: 0 to 1% by mass, preferably 0 to 0.5% by mass t-3-heptene: 0 to 2% by mass, preferably 0 to 1% by mass n-heptane: 0 to 3% by mass, Preferably 0 to 2.5% by mass 2-methyl-2-hexene: 0 to 2% by mass, preferably 0 to 1% by mass 3-methyl-c-2-hexene: 0 to 2% by mass, preferably 0 to 2% by mass 1% by mass t-2-heptene: 0 to 2% by mass, preferably 3-ethyl-2-pentene: 0 to 1% by mass, preferably 0 to 0.5% by mass 3-methyl-t-2-hexene: 0 to 4% by mass, preferably 0 to 1% by mass 3% by mass c-2-heptene: 0 to 2% by mass, preferably 0 to 1% by mass 1-c, 2-dimethylcyclopentane: 0 to 2% by mass,
Preferably 0 to 1% by weight methylcyclohexane: 0 to 2% by weight, preferably 0 to 2% by weight
1% by mass 2,2-dimethylhexane: 0 to 1% by mass, preferably 0 to 0.5% by mass Ethylcyclopentane: 0 to 2% by mass, preferably 0 to 2% by mass
1% by mass 2,5-dimethylhexane: 0 to 3% by mass, preferably 0 to 2.5% by mass 2,2,3-Trimethylpentane: 0 to 2% by mass, preferably 0 to 1.5% by mass 2 , 4-dimethylhexane: 0 to 3% by mass, preferably 0 to 2.5% by mass

Group E includes 1-c, 2-t, 4-trimethylcyclopentane, 3,3-dimethylhexane,
-T, 2-c, 3-trimethylcyclopentane, 2,
3,4-trimethylpentane, toluene, 2,3-dimethylhexane, 1,1,2-trimethylcyclopentane, 2-methylheptane, 4-methylheptane, 3,4
-Dimethylhexane, 1-c, 3-dimethylcyclohexane, 3-methylheptane, 3-ethylhexane, 1-
t, 4-dimethylcyclohexane, 1,3-octadiene, 1,1-dimethylcyclohexane, 2,2,5-trimethylhexane, 3-c-ethylmethylcyclopentane, 3-t-ethylmethylcyclopentane, 2-t -Ethylmethylcyclopentane, 1,1-ethylmethylcyclopentane, 2,2,4-trimethylhexane, 1-
t, 2-dimethylcyclohexane, t-4-octene,
1-c, 2-c, 3-trimethylcyclopentane, 1-
t, 3-dimethylcyclohexane, n-octane, 2-
Octene, 2,3,5-trimethylhexane, 2,2-
Dimethylheptane, ethylcyclohexane, 2,6-dimethylheptane, 2,4-dimethylheptane, 4,4-
Dimethyl heptane, n-propylcyclopentane, 1-
c, 3-c, 5-trimethylcyclohexane, 2,5-
Dimethylheptane, 3,5-dimethylheptane, 3,3
-Dimethylheptane, 1,1,3-trimethylcyclohexane. Since the drivability, fuel efficiency, and exhaust gas may deteriorate, the content of Group E (total amount, based on the total amount of unleaded gasoline; the same applies hereinafter) is 10% by mass or more, preferably 12% by mass or more, and most preferably It must be at least 14% by mass, even more preferably at least 15% by mass, most preferably at least 17% by mass. Further, the content of Group E needs to be 45% by mass or less, preferably 40% by mass or less, and more preferably 38% by mass or less because drivability, fuel efficiency, and exhaust gas may deteriorate. It is.

The contents of the individual components of Group E are not particularly limited, but are preferably as follows.

1-c, 2-t, 4-trimethylcyclopentane: 0 to 2% by mass, preferably 0 to 1% by mass 3,3-dimethylhexane: 0 to 1% by mass, preferably 0 to 0.5% Mass% 1-t, 2-c, 3-trimethylcyclopentane: 0
1% by mass, preferably 0 to 0.5% by mass 2,3,4-trimethylpentane: 0% by mass or more, preferably 0.1% by mass or more, more preferably 0.5% by mass
Or more, still more preferably 1% by mass or more and 10% by mass
Or less, preferably 7% by mass or less, more preferably 5% by mass or less, even more preferably 3% by mass or less toluene: 0% by mass or more, preferably 5% by mass or more, more preferably 7% by mass or more, even more preferably 10
% By mass or more, most preferably 12% by mass or more and 40% by mass or less, preferably 35% by mass or less, more preferably 3% by mass or less.
2% by mass or less, more preferably 30% by mass or less 2,3-dimethylhexane: 0 to 2% by mass, preferably 0 to 1.5% by mass 1,1,2-trimethylcyclopentane: 0 to 1% by mass, Preferably 0 to 0.5% by mass 2-methylheptane: 0 to 2% by mass, preferably 0 to 1%
% By mass 4-methylheptane: 0 to 2% by mass, preferably 0 to 1%
% By mass 3,4-dimethylhexane: 0 to 1% by mass, preferably 0 to 0.5% by mass 1-c, 3-dimethylcyclohexane: 0 to 2% by mass,
Preferably 0 to 1% by mass 3-methylheptane: 0 to 2% by mass, preferably 0 to 2% by mass
1.5% by mass 3-ethylhexane: 0 to 1% by mass, preferably 0 to 1%
0.5% by mass 1-t, 4-dimethylcyclohexane: 0 to 1% by mass,
Preferably 0 to 0.5% by mass 1,3-octadiene: 0 to 1% by mass, preferably 0 to 1% by mass
0.5% by mass, more preferably 0.1% by mass or less 1,1-dimethylcyclohexane: 0 to 3% by mass, preferably 0 to 2.5% by mass 2,2,5-trimethylhexane: 0 to 2% by mass %, Preferably 0 to 1.5% by mass 3-c-ethylmethylcyclopentane: 0 to 1% by mass,
Preferably 0 to 0.5% by mass 3-t-ethylmethylcyclopentane: 0 to 1% by mass,
Preferably 0 to 0.5% by mass 2-t-ethylmethylcyclopentane: 0 to 1% by mass,
Preferably 0 to 0.5% by mass 1,1-ethylmethylcyclopentane: 0 to 1% by mass,
Preferably 0 to 0.5% by mass 2,2,4-trimethylhexane: 0 to 2% by mass, preferably 0 to 1% by mass 1-t, 2-dimethylcyclohexane: 0 to 1% by mass,
Preferably 0 to 0.5% by mass t-4-octene: 0 to 2% by mass, preferably 0 to 1% by mass 1-c, 2-c, 3-trimethylcyclopentane: 0
2% by mass, preferably 0 to 1% by mass 1-t, 3-dimethylcyclohexane: 0 to 1% by mass,
Preferably 0 to 0.5% by mass n-octane: 0 to 1% by mass, preferably 0 to 0.5% by mass 2-octene: 0 to 1% by mass, preferably 0 to 0.5% by mass 2,3 2,5-Dimethylheptane: 0 to 1% by mass, preferably 0 to 0.5% by mass Ethylcyclohexane: 0 to 1% by mass %, Preferably 0
0.5% by mass 2,6-dimethylheptane: 0 to 1% by mass, preferably 0 to 0.5% by mass 2,4-dimethylheptane: 0 to 1% by mass, preferably 0 to 0.5% by mass 4 , 4-dimethylheptane: 0 to 1% by mass, preferably 0 to 0.5% by mass n-propylcyclopentane: 0 to 1% by mass, preferably 0 to 0.5% by mass 1-c, 3-c, 5-trimethylcyclohexane: 0
1% by mass, preferably 0 to 0.5% by mass 2,5-dimethylheptane: 0 to 1% by mass, preferably 0 to 0.5% by mass 3,5-dimethylheptane: 0 to 1% by mass, preferably 0-0.5% by mass 3,3-dimethylheptane: 0-1% by mass, preferably 0-0.5% by mass 1,1,3-trimethylcyclohexane: 0-1% by mass, preferably 0-0. 5% by mass

Group F includes 2,4-dimethyl-1-heptene, ethylbenzene, 1-c, 2-t, 4-trimethylcyclohexane, 2-methyl-1-octene,
Methyl-2-octene, 1,3-dimethylbenzene (m
-Xylene), 1,4-dimethylbenzene (p-xylene), 3,4-dimethylheptane, 4-ethylheptane, 4-methyloctane, 2-methyloctane, 3-ethylheptane, 3-methyloctane, 1- c, 2-t,
4-c-trimethylcyclohexane, 1,2-dimethylbenzene (o-xylene), 1-nonene, isobutylcyclopentane, c-2-nonene, t-3-nonene, n-
Nonane, 1,1-methylethylcyclohexane, t-
2,2,5,5-tetramethyl-3-hexene, isopropylbenzene, c-3-nonene, 2,2-dimethyloctane, 2,4-dimethyloctane, 2,6-dimethyloctane, 2,5-dimethyl Octane, n-butylcyclopentane, 3,3-dimethyloctane, n-propylbenzene, 3-methyl-5-ethylheptane, 1,3-
Methylethylbenzene, 1,4-methylethylbenzene, 1,3,5-trimethylbenzene, 5-methylnonane, 1,2-methylethylbenzene, 2-methylnonane, 3-methylnonane, 3-ethyl-2-methyl-2-
Heptene, 1,2,4-trimethylbenzene, isobutylcyclohexane, 1-decene, isobutylbenzene,
sec-butylbenzene, n-decane, 1,2,3-trimethylbenzene, 1,3-methylisopropylbenzene, 1,4-methylisopropylbenzene, and 2,3-dihydroindene (indane). Since the fuel efficiency may deteriorate, the content of Group F (total amount, based on the total amount of unleaded gasoline; the same applies hereinafter) is 3% by mass or more, preferably 5% by mass, more preferably 6% by mass or more, and even more. Preferably, it must be at least 7% by mass.
Also, hydrocarbons in the exhaust gas may increase,
There is a possibility that a problem may occur in the low-temperature operation at low temperatures.
The content of Group F is 38% by mass or less, preferably 35% by mass or less, more preferably 35% by mass or less, because the intake valve deposit and the combustion chamber deposit may increase, and the ignition plug may smolder. It is necessary to be 32% by mass or less, still more preferably 30% by mass or less.

The contents of the individual components of Group F are not particularly limited, but are preferably as follows.

2,4-dimethyl-1-heptene: 0-1
% By mass, preferably 0 to 0.5% by mass ethylbenzene: 0% by mass or more, preferably 0.1% by mass or more, more preferably 0.2% by mass or more, still more preferably 0.5% by mass or more, most preferably Preferably 1% by mass
6% by mass or less, preferably 5% by mass or less 1-c, 2-t, 4-trimethylcyclohexane: 0 to 0%
1% by mass, preferably 0 to 0.5% by mass 2-methyl-1-octene: 0 to 1% by mass, preferably 0 to 0.5% by mass 2-methyl-2-octene: 0 to 1% by mass, Preferably 0 to 0.5% by mass 1,3-dimethylbenzene (m-xylene): 0% by mass
Or more, preferably 0.1% by mass or more, more preferably 0.2% by mass or more, still more preferably 0.5% by mass.
Or more, most preferably 1% by mass or more and 15% by mass or less,
Preferably 12% by mass or less, more preferably 10% by mass
Or less, more preferably 8% by mass or less 1,4-dimethylbenzene (p-xylene): 0% by mass
Or more, preferably 0.1% by mass or more, more preferably 0.2% by mass or more, still more preferably 0.5% by mass.
Above, most preferably 1% by mass or more and 6% by mass or less, preferably 5% by mass or less 3,4-dimethylheptane: 0 to 1% by mass, preferably 0 to 0.5% by mass 4-ethylheptane: 0 to 0% 1% by mass, preferably 0 to
0.5% by mass 4-methyloctane: 0 to 1% by mass, preferably 0 to 1% by mass
0.5% by mass 2-methyloctane: 0 to 2% by mass, preferably 0 to 1%
% By mass 3-ethylheptane: 0 to 1% by mass, preferably 0 to 1% by mass
0.5% by mass 3-methyloctane: 0 to 2% by mass, preferably 0 to 1%
% By mass 1-c, 2-t, 4-c-trimethylcyclohexane:
0 to 1% by mass, more preferably 0 to 0.5% by mass 1,2-dimethylbenzene (o-xylene): 0% by mass
Or more, preferably 0.1% by mass or more, more preferably 0.2% by mass or more, still more preferably 0.5% by mass.
Or more, most preferably 1% by mass or more and 10% by mass or less,
Preferably 8% by mass or less, more preferably 6% by mass or less, even more preferably 5% by mass or less 1-nonene: 0 to 2% by mass, preferably 0 to 1% by mass isobutylcyclopentane: 0 to 1% by mass, preferably Is 0 to 0.5% by mass c-2-nonene: 0 to 1% by mass, preferably 0 to 0.5% by mass
% By mass t-3-nonene: 0 to 1% by mass, preferably 0 to 0.5%
% By mass n-nonane: 0 to 1% by mass, preferably 0 to 0.5% by mass 1,1-methylethylcyclohexane: 0 to 1% by mass,
Preferably 0 to 0.5% by mass t-2,2,5,5-tetramethyl-3-hexene: 0
Isopropylbenzene: 0 to 2% by mass, preferably 0 to 1% by mass, preferably 0 to 0.5% by mass.
1% by mass c-3-nonene: 0 to 1% by mass, preferably 0 to 0.5%
% By mass 2,2-dimethyloctane: 0 to 1% by mass, preferably 0 to 0.5% by mass 2,4-dimethyloctane: 0 to 1% by mass, preferably 0 to 0.5% by mass 2,6- Dimethyloctane: 0 to 1% by mass, preferably 0 to 0.5% by mass 2,5-Dimethyloctane: 0 to 1% by mass, preferably 0 to 0.5% by mass n-butylcyclopentane: 0 to 1% by mass %, Preferably 0 to 0.5% by mass 3,3-dimethyloctane: 0 to 1% by mass, preferably 0 to 0.5% by mass n-propylbenzene: 0 to 2% by mass, preferably 0 to 0% by mass
1.5% by mass 3-methyl-5-ethylheptane: 0 to 1% by mass, preferably 0 to 0.5% by mass 1,3-methylethylbenzene: 0% by mass or more, preferably 0.1% by mass or more, More preferably 0.3% by mass or more, even more preferably 0.5% by mass or more, most preferably 1% by mass or more, 6% by mass or less, preferably 5% by mass or less 1,4-methylethylbenzene: 0% by mass Or more, preferably 0.1% by mass or more, more preferably 0.3% by mass or more, still more preferably 0.5% by mass or more, 4% by mass
1,3,5-trimethylbenzene: 0% by mass or more, preferably 0.1% by mass or more, more preferably 0.2% by mass or less
Above, still more preferably 0.5% by mass or more and 4% by mass or less, preferably 3% by mass or less 5-methylnonane: 0 to 2% by mass, preferably 0 to 1% by mass 1,2-methylethylbenzene: 0% by mass % Or more, preferably 0.1% or more, more preferably 0.2% or more, even more preferably 0.3% or more, most preferably 0.5% or more and 4% or less, preferably 3
2% by mass or less 2-methylnonane: 0 to 1% by mass, preferably 0 to 0.1% by mass.
5% by mass 3-methylnonane: 0 to 1% by mass, preferably 0 to 0.
5% by mass 3-ethyl-2-methyl-2-heptene: 0 to 1% by mass, preferably 0 to 0.5% by mass 1,2,4-trimethylbenzene: 0% by mass or more, preferably 0.1% by mass % Or more, more preferably 0.5% by mass
Or more, still more preferably 1% by mass or more and 10% by mass
Or less, preferably 6% by mass or less, more preferably 5% by mass or less, even more preferably 4% by mass or less isobutylcyclohexane: 0 to 1% by mass, preferably 0 to 0.5% by mass 1-decene: 0 to 1% by mass %, Preferably 0 to 0.5% by mass isobutylbenzene: 0 to 1% by mass, preferably 0 to 1% by mass
0.5% by mass sec-butylbenzene: 0 to 2% by mass, preferably 0%
N-decane: 0 to 1% by mass, preferably 0 to 0.5% by mass 1,2,3-trimethylbenzene: 0 to 4% by mass, preferably 0 to 3% by mass 1,3 -Methylisopropylbenzene: 0 to 3% by mass,
Preferably 0 to 2.5% by mass 1,4-methylisopropylbenzene: 0 to 1% by mass,
Preferably 0 to 0.5% by mass 2,3-dihydroindene (indane): 0 to 2% by mass, preferably 0 to 1% by mass

Group G includes sec-butylcyclohexane, 1,2-methylisopropylbenzene, 3-ethylnonane, 1,3-diethylbenzene, 1,3-methyl-n-propylbenzene, 1,4-methyl-n-propyl Benzene, n-butylbenzene, 1,3-dimethyl-
5-ethylbenzene, 1,2-diethylbenzene, 1,
2-methyl-n-propylbenzene, 1,4-dimethyl-2-ethylbenzene, 1,3-dimethyl-4-ethylbenzene, 1,2-dimethyl-4-ethylbenzene,
1,3-dimethyl-2-ethylbenzene, 1-undecene, 1,4-methyl-t-butylbenzene, 1,2-dimethyl-3-ethylbenzene, n-undecane, 1,
2,4,5-tetramethylbenzene, 1,2,3,5-
Tetramethylbenzene, 5-methylindane, 4-methylindane, 1,2-ethyl-n-propylbenzene,
1,3-diisopropylbenzene, 1,2-diisopropylbenzene, 1,4-diisopropylbenzene, tetrahydronaphthalene, naphthalene, 1,4-ethyl-t
-Butylbenzene, 1,3-di-n-propylbenzene, n-dodecane, 2-methylnaphthalene, n-tridecane, 1-methylnaphthalene, n-tetradecane. The content of the group G (total amount, based on the total amount of unleaded gasoline; the same applies hereinafter) is 0 in terms of the possibility of smoldering of the spark plug and the possibility of increasing the intake valve deposit and the combustion chamber deposit. -5 mass%, preferably 0-4 mass%, more preferably 0-3 mass%, even more preferably 0-2.5 mass%, most preferably 0-2.2 mass%. is there.

The contents of the individual components of Group G are not particularly limited, but are preferably as follows.

Sec-butylcyclohexane: 0 to 1% by mass, preferably 0 to 0.5% by mass 1,2-methylisopropylbenzene: 0 to 1% by mass,
Preferably 0 to 0.5% by mass 3-ethylnonane: 0 to 2% by mass, preferably 0 to 1% by mass 1,3-diethylbenzene: 0 to 2% by mass, preferably 0 to 1% by mass 1,3-methyl -N-propylbenzene: 0 to 2% by mass, preferably 0 to 1% by mass 1,4-methyl-n-propylbenzene: 0 to 2% by mass, preferably 0 to 1% by mass n-butylbenzene: 0 to 0% by mass 1% by mass, preferably 0 to
0.5% by mass 1,3-dimethyl-5-ethylbenzene: 0 to 2% by mass, preferably 0 to 1% by mass 1,2-diethylbenzene: 0 to 1% by mass, preferably 0 to 0.5% by mass 1 1,2-methyl-n-propylbenzene: 0 to 1% by mass, preferably 0 to 0.5% by mass 1,4-dimethyl-2-ethylbenzene: 0 to 2% by mass, preferably 0 to 1% by mass 1, 3-dimethyl-4-ethylbenzene: 0 to 2% by mass, preferably 0 to 1% by mass 1,2-dimethyl-4-ethylbenzene: 0 to 2% by mass, preferably 0 to 1% by mass 1,3-dimethyl- 2-ethylbenzene: 0 to 2% by mass, preferably 0 to 1% by mass 1-undecene: 0 to 1% by mass, preferably 0 to 0.5%
% By mass 1,4-methyl-t-butylbenzene: 0 to 1% by mass,
Preferably it is 0-0.5 mass%, More preferably, it is 0-0.
1% by mass or less 1,2-dimethyl-3-ethylbenzene: 0 to 1% by mass, preferably 0 to 0.5% by mass n-undecane: 0 to 1% by mass, preferably 0 to 0.5%
% By mass 1,2,4,5-tetramethylbenzene: 0 to 2% by mass, preferably 0 to 1% by mass 1,2,3,5-tetramethylbenzene: 0 to 2% by mass, preferably 0 to 1% by mass % By mass 5-methylindane: 0 to 1% by mass, preferably 0 to 1% by mass
0.5% by mass 4-methylindane: 0 to 1% by mass, preferably 0 to
0.5 mass% 1,2-ethyl-n-propylbenzene: 0 to 1 mass%, preferably 0 to 0.5 mass%, more preferably 0 to
0.1% by mass 1,3-diisopropylbenzene: 0 to 1% by mass, preferably 0 to 0.5% by mass, more preferably 0 to 0.1% by mass 1,2-diisopropylbenzene: 0 to 1% by mass , Preferably 0 to 0.5% by mass, more preferably 0 to 0.1% by mass 1,4-diisopropylbenzene: 0 to 1% by mass, preferably 0 to 0.5% by mass, more preferably 0 to 0% by mass 0.1% by mass of tetrahydronaphthalene: 0 to 1% by mass, preferably 0%
Naphthalene: 0 to 2% by mass, preferably 0 to 1% by mass,
More preferably, it is 0 to 0.5% by mass, and still more preferably 0
-0.1 mass% 1,4-ethyl-t-butylbenzene: 0-1 mass%,
Preferably it is 0-0.5 mass%, More preferably, it is 0-0.
1% by mass 1,3-di-n-propylbenzene: 0 to 1% by mass, preferably 0 to 0.5% by mass, more preferably 0 to 0.1% by mass
% By mass n-dodecane: 0 to 1% by mass, preferably 0 to 0.5% by mass 2-methylnaphthalene: 0 to 1% by mass, preferably 0 to 1% by mass
0.5 mass%, more preferably 0 to 0.1 mass% or less n-tridecane: 0 to 1 mass%, preferably 0 to 0.5 mass%
% By mass 1-methylnaphthalene: 0 to 1% by mass, preferably 0 to 1% by mass
0.5% by mass, more preferably 0 to 0.1% by mass n-tetradecane: 0 to 1% by mass, preferably 0 to 0.1% by mass.
5% by mass

The total content (based on the total amount of unleaded gasoline; the same applies hereinafter) of each of the groups A to G is 85% by mass because drivability, fuel efficiency, and exhaust gas may deteriorate. -100% by mass, preferably 90-100% by mass, more preferably 95-100% by mass.

The total content of each group and the individual contents of the components of each group are all based on JIS K 2
536 means the content measured according to the "test method for all components by gas chromatography" of "petroleum products-component test method".

<Summer Unleaded Gasoline> Next, the summer unleaded gasoline will be described in detail. Here, the unleaded gasoline for the summer season can be used in a temperature range of about 0 ° C. to 40 ° C., and is particularly suitable for use in a temperature range of 10 ° C. to 35 ° C.

(1) The unleaded gasoline of the present invention has a research octane number (RON) of 96 or more, preferably 98 or more, more preferably 99.5 or more, and most preferably 10 or more.
0 or more. In the unleaded gasoline of the present invention, RON
Is less than 96, knocking may occur, and the output may decrease in premium-spec vehicles.

(2) The unleaded gasoline of the present invention has a motor method octane number (MON) of 84 or more, preferably 86 or more, more preferably 87 or more, and most preferably 87.5.
That is all. If the octane number by the motor method is less than 84, knocking may occur during high-speed running, and the output may decrease in premium-spec vehicles.

Here, the octane number of the research method and the
The octane number of the tar method is defined by JIS K 228, respectively.
0 means the octane number of the research method and the octane number of the motor method measured by "Octane number and cetane number test method".

(3) Density of unleaded gasoline of the present invention (15
° C.) is 0.72~0.77g / cm ^3. Density is 0.72 g / c because fuel efficiency may be deteriorated.
m ³ or more, preferably 0.725 g / cm ³ or more, more preferably 0.73 g / cm ³ or more, and even more preferably 0.735 g / cm ³ or more.
On the other hand, such that there is a possibility that smoldering occurs acceleration of deterioration and the spark plug, 0.77 g / cm ³ or less, preferably 0.765 g / cm ³ or less, more preferably 0.76 g / cm ³ or less, Most preferably 0.757 g
/ Cm ³ or less.

Here, the density refers to JIS K 2249.
"Crude oil and petroleum products
Means the density measured by the "capacity conversion table".

(4) The vapor pressure of the unleaded gasoline of the present invention is
44 to 93 kPa. The vapor pressure may be lower than 93 kPa, preferably lower than 78 kPa, more preferably lower than 78 kPa, because there is a possibility that a defect in high-temperature driving property or a high-temperature restart property due to vapor lock may occur, and a possibility that fuel evaporative gas may increase. It is necessary that the pressure be 75 kPa or less, and even more preferably 70 kPa or less. In addition, it is necessary that the pressure be 44 kPa or more, preferably 50 kPa or more, more preferably 55 kPa or more, since there is a possibility that a problem may occur in the startability in a cold state. The term "vapor pressure" as used herein means a vapor pressure (lead vapor pressure (RVP)) measured according to JIS K 2258, "Crude oil and fuel oil vapor pressure test method (lead method)".

(5) to (11) The unleaded gasoline of the present invention is JIS K 2254 "Petroleum products-distillation test method".
(5) Distillation initial boiling point (initial boiling point) is 20 to 37 ° C. (6) 10% distillation temperature (T10) is 35 to 70 ° C. (7) 30% distillation temperature ( (T30) 55-77 ° C (8) 50% distillation temperature is (T50) 75-105 ° C (9) 70% distillation temperature is (T70) 100-130 ° C (10) 90% distillation temperature is (T90) ) 115-180 ° C (11) It is necessary that the distillation end point (end point) is 150-220 ° C.

The initial boiling point needs to be 20 ° C. or higher, preferably 24 ° C. or higher, since there is a possibility that a problem may occur in high-temperature operability. On the other hand, since there is a possibility that a problem may occur in the startability in a cold state,
Preferably, it must be 36 ° C. or lower.

[0074] T10 is likely to cause a problem of high-temperature operability and high-temperature restartability due to the vapor lock, and the necessity of increasing the amount of fuel evaporative gas.
It is necessary to be 35 ° C. or higher, preferably 40 ° C. or higher. On the other hand, it is necessary that the temperature be 70 ° C. or less, preferably 60 ° C. or less, since there is a possibility that a problem occurs in the startability in a cold state.

T30 is required to be 55 ° C. or higher, preferably 58 ° C. or higher, because there is a possibility that high-temperature drivability may cause a problem and fuel efficiency may deteriorate. On the other hand, it is necessary that the temperature be 77 ° C. or lower, preferably 75 ° C. or lower, more preferably 72 ° C. or lower, since there is a possibility that a problem occurs in the operability at the time of cooling.

The T50 is 75% because there is a possibility that a malfunction may occur in the high-temperature operability, there is a possibility that hydrocarbons in the exhaust gas may increase, and there is a possibility that fuel efficiency may deteriorate.
It is necessary that the temperature be at least 80 ° C, preferably at least 80 ° C. On the other hand, there is a possibility that a problem may occur in the operability at the time of cooling, and there is a possibility that hydrocarbons in the exhaust gas may increase. Therefore, 105 ° C or less, preferably 100 ° C or less, more preferably 97 ° C or less, Even more preferably 95 ° C
It must be:

The temperature T70 needs to be 100 ° C. or higher because fuel efficiency may deteriorate. on the other hand,
Hydrocarbons in the exhaust gas may increase, drivability during cold operation may be impaired, intake valve deposits and combustion chamber deposits may increase,
The temperature must be 130 ° C. or lower, preferably 128 ° C. or lower, because the smoldering of the spark plug may occur.

T90 is required to be 115 ° C. or more, preferably 120 ° C. or more, since fuel efficiency may be deteriorated. On the other hand, hydrocarbons in the exhaust gas may increase, operability during cold operation may be impaired, intake valve deposits and combustion chamber deposits may increase, smoldering spark plugs It is necessary that the temperature be 180 ° C. or lower, preferably 170 ° C. or lower, more preferably 160 ° C. or lower due to the possibility of occurrence.

The end point needs to be 150 ° C. or higher, preferably 160 ° C. or higher, because fuel efficiency may be deteriorated. On the other hand, the intake valve deposit and the combustion chamber deposit may increase and may cause smoldering of the spark plug. is necessary.

(12) The aromatic content of the unleaded gasoline of the present invention may be 20
It must be at least 25% by volume, preferably at least 25% by volume. Further, since the intake valve deposit and the combustion chamber deposit may increase, the smoldering of the spark plug may occur, and the benzene in the exhaust gas may increase, it is preferably 45% by volume or less. Should be 42% by volume or less.

(13) The unleaded gasoline of the present invention has an olefin content of 0% by volume or more, preferably 5% by volume or more. Further, the olefin content is 25% by volume or less, preferably 20% by volume or less, because the oxidation stability of unleaded gasoline may be deteriorated and the nitrogen oxides in the exhaust gas may increase. It is necessary to be.

Here, the aromatic content and the olefin content are values measured by the fluorescent indicator adsorption method of JIS K2536 “Petroleum products-component test method”.

(14) The unleaded gasoline of the present invention has a sulfur content of 50 ppm or less, based on the total amount of unleaded gasoline, because carbon monoxide, hydrocarbons and nitrogen oxides in the exhaust gas may increase. , Preferably 30 ppm or less,
More preferably 20 ppm or less, most preferably 10 p
pm or less.

Here, the sulfur content is defined as JIS K254.
1 means the sulfur content measured by "Crude oil and petroleum products-Sulfur content test method".

(15) The unleaded gasoline of the present invention has a benzene content of 0 to 5% by volume, preferably 0 to 3% by volume, based on the total amount of unleaded gasoline, since benzene in the exhaust gas may increase. , More preferably 0 to 1% by volume,
Even more preferably, it must be 0 to 0.5% by volume.

(16) In the unleaded gasoline of the present invention, the content of methyl-t-butyl ether (MTBE) is 0 to 15 vol. %, Preferably 0 to 7% by volume, more preferably 0 to 6% by volume.

Here, the contents of benzene and MTBE are as follows:
It means the content measured according to "the method for testing all components by gas chromatography" of JIS k 2536 "Petroleum products-method for testing components".

The unleaded gasoline of the present invention satisfies the above conditions and divides each component contained in the unleaded gasoline into groups A to G. It is necessary to meet.

Group A: 5 to 32% by mass Group B: 10 to 25% by mass Group C: 1 to 18% by mass Group D: 2 to 18% by mass Group E: 10 to 45% by mass Group F: 3 to 38% by mass % Group G: 0 to 5% by mass Total amount of Groups A to G: 85 to 100% by mass

Group A includes propane, 2-methylpropane (isobutane), 1-butene, 2-methylpropene (isobutylene), n-butane, t-2-butene,
2-dimethylpropane, c-2-butene, 3-methyl-
1-butene and 2-methylbutane (isopentane). Since there is a possibility that a problem occurs in the startability in a cold state, the content of Group A (total amount, based on the total amount of unleaded gasoline; the same applies hereinafter) is 5% by mass or more, preferably 7% by mass or more. More preferably, it is necessary to be 8% by mass or more. In addition, the content of Group A is preferably 32% by mass or less, because there is a possibility that a malfunction at high temperature operation and a problem at high temperature restart due to vapor lock may occur, and there is a possibility that fuel evaporative gas may increase. Is 24% by mass or less, more preferably 20% by mass or less, even more preferably 17% by mass or less, and most preferably 15% by mass or less.
It is necessary to be less than mass%.

The content of each component of Group A is not particularly limited, but is preferably as follows.

Propane: 0 to 2% by mass, preferably 0 to 2% by mass
1% by mass, more preferably 0 to 0.1% by mass 2-methylpropane (isobutane): 0% by mass or more, preferably 0.1% by mass or more, more preferably 0.2% by mass or more, still more preferably 0.3% by mass or more, most preferably 0.5% by mass or more and 4% by mass or less, preferably 3% by mass or less 1-butene: 0 to 2% by mass, preferably 0 to 1.5% by mass 2-methyl Propene (isobutylene): 0 to 3% by mass,
Preferably 0 to 1% by mass, more preferably 0 to 0.5% by mass n-butane: 0% by mass or more, preferably 0.3% by mass or more, preferably 0.5% by mass or more and 10% by mass or less, Preferably 7% by mass or less, more preferably 4% by mass or less,
More preferably 3% by mass or less, most preferably 2.5% by mass.
T-2-butene: 0 to 2% by mass, preferably 0 to 1.5% by mass
% By mass 2,2-dimethylpropane: 0 to 1% by mass, preferably 0 to 0.5% by mass c-2-butene: 0 to 2% by mass, preferably 0 to 1.5% by mass
% By mass 3-methyl-1-butene: 0 to 2% by mass, preferably 0%
１1% by mass 2-methylbutane (isopentane): 0% by mass or more, preferably 3% by mass or more, more preferably 5% by mass or more,
Even more preferably, 7% by mass or more and 30% by mass or less,
Preferably 25% by mass or less, more preferably 20% by mass
Or less, more preferably 15% by mass or less, and most preferably 12% by mass or less.

Group B includes 1-pentene, 2-methyl-1-butene, n-pentane, 2-methyl-1,3-butadiene (isoprene), t-2-pentene, 3,3-
Dimethyl-1-butene, c-2-pentene, 2-methyl-2-butene, 1-t, 3-pentadiene, cyclopentadiene, 2,2-dimethylbutane, cyclopentene,
4-methyl-1-pentene, 3-methyl-1-pentene, cyclopentane, 2,3-dimethylbutane, methyl-t-butyl ether (MTBE), 2,3-dimethyl-1-butene, 4-methyl-c -2-pentene and 2-methylpentane. Since there is a possibility that the operability at the time of cold operation may be deteriorated, the content of group B (total amount,
10% by mass or more based on the total amount of unleaded gasoline;
Preferably 12% by mass or more, more preferably 13% by mass
As described above, it is more preferable that the content be 15% by mass or more. In addition, the content of Group B is 25% by mass because there is a possibility that a malfunction may occur in high-temperature driving performance, a possibility that fuel consumption may deteriorate, and a possibility that nitrogen oxides in exhaust gas may increase. Or less, preferably 23% by mass or less.

The content of each component of the group B is not particularly limited, but is preferably as follows.

1-pentene: 0 to 2% by mass, preferably to 1.5% by mass 2-methyl-1-butene: 0% by mass or more, preferably 0.1% by mass, more preferably 0.3% by mass Or more, still more preferably 0.5% by mass or more, most preferably 0.7% by mass or more and 4% by mass or less, preferably 3% by mass.
N-pentane: 0% by mass or more, preferably 0.3% by mass
Or more, more preferably 0.5% by mass or more and 10% by mass or less, preferably 7% by mass or less, more preferably 5% by mass.
Or less, more preferably 3.5% by mass or less 2-methyl-1,3-butadiene (isoprene): 0 to 0
1% by mass, preferably 0 to 0.5% by mass, more preferably 0 to 0.1% by mass t-2-pentene: 0% by mass or more, preferably 0.3% by mass, more preferably 0.5% by mass % Or more, still more preferably 0.8% by weight or more, most preferably 1% by weight or more and 5% by weight or less, preferably 4% by weight or less 3,3-dimethyl-1-butene: 0 to 1% by weight, preferably Is 0 to 0.5% by mass c-2-pentene: 0% by mass or more, preferably 0.1% by mass or more, more preferably 0.3% by mass or more, still more preferably 0.5% by mass or more, 2.5% by mass or less
2% by mass or less 2-methyl-2-butene: 0% by mass or more, preferably 0.5% by mass or more, more preferably 0.8% by mass or more,
Still more preferably 1% by mass or more, most preferably 1.5% by mass or more and 6% by mass or less, preferably 5% by mass or less.
1-t, 3-pentadiene: 0 to 1% by mass, preferably 0 to 0.5% by mass, more preferably 0 to 0.1% by mass cyclopentadiene: 0 to 1% by mass, preferably 0 to 0% by mass
0.5% by mass, more preferably 0 to 0.1% by mass 2,2-dimethylbutane: 0 to 2% by mass, preferably 0%
Cyclopentene: 0 to 2% by mass, preferably 0 to 1% by mass 4-methyl-1-pentene: 0 to 2% by mass, preferably 0 to 1% by mass 3-methyl-1-pentene: 0-2% by mass, preferably 0-1% by mass cyclopentane: 0-2% by mass, preferably 0-1% by mass 2,3-dimethylbutane: 0% by mass or more, preferably 0.3% by mass or more, More preferably 0.5% by mass or more,
Even more preferably 1% by mass or more methyl-t-butyl ether (MTBE): 0 to 15% by mass, preferably 0 to 7% by mass, more preferably 0 to 6% by mass.
% By mass 2,3-dimethyl-1-butene: 0 to 2% by mass, preferably 0 to 1% by mass 4-methyl-c-2-pentene: 0 to 2% by mass, preferably 0 to 1% by mass 2- Methylpentane: 0% by mass or more, preferably 1% by mass or more, more preferably 1.5% by mass or more, still more preferably 2% by mass or more, most preferably 3% by mass or more and 10% by mass or less, preferably 8% by mass or less. % By mass or less, more preferably 6% by mass or less, still more preferably 5% by mass or less

Group C includes 4-methyl-t-2-pentene, 3-methylpentane, 2-methyl-1-pentene, 1-hexene, n-hexane, t-3-hexene,
c-3-hexene, t-2-hexene, 2-methyl-2
-Pentene, 3-methyl-c-2-pentene, 3-methylcyclopentene, c-2-hexene, 3-methyl-t
-2-pentene, 2,2-dimethylpentane, methylcyclopentane, 2,4-dimethylpentane, 2,3,3
-Trimethyl-1-butene, 2,2,3-trimethylbutane, 3,4-dimethyl-1-pentene, 4,4-dimethyl-c-2-pentene, 2,4-dimethyl-1-pentene, 1- Methylcyclopentene, benzene, 2-methyl-c-3-hexene, 3,3-dimethylpentane, 5
-Methyl-1-hexene, cyclohexane, 2-methyl-t-3-hexene, 2-methyl-3-ethyl-1-butene, 4-methyl-1-hexene. Since there is a possibility that the operability at the time of cold operation may be deteriorated, Group C
Content (total amount, based on unleaded gasoline total amount; the same applies hereinafter)
Needs to be 1% by mass or more, preferably 2% by mass or more, more preferably 4% by mass or more, still more preferably 5% by mass or more, and most preferably 6% by mass or more. In addition, there is a possibility that a malfunction may occur in high-temperature driving performance,
Group C because fuel economy may deteriorate
Must be 18% by mass or less, preferably 16% by mass or less, more preferably 15% by mass or less, and still more preferably 12% by mass or less.

The content of each component of Group C is not particularly limited, but is preferably as follows.

4-methyl-t-2-pentene: 0 to 2% by mass, preferably 0 to 1% by mass 3-methylpentane: 0% by mass or more, preferably 0.5% by mass
% By mass or more, more preferably 1% by mass or more, even more preferably 1.5% by mass or more, and most preferably 2% by mass.
As described above, 6% by mass or less, preferably 5% by mass or less 2-methyl-1-pentene: 0 to 2% by mass, preferably 0 to 1.5% by mass 1-hexene: 0 to 2% by mass, preferably 0 to 2% by mass 1 mass% n-hexane: 0 to 6 mass%, preferably 0 to 5 mass%, more preferably 0 to mass% t-3-hexene: 0 to 2 mass%, preferably 0 to 1 mass% c-3 -Hexene: 0 to 2% by mass, preferably 0 to 1% by mass t-2-hexene: 0 to 2% by mass, preferably 0 to 1% by mass.
5% by mass 2-methyl-2-pentene: 0 to 2% by mass, preferably 0 to 1.5% by mass 3-methyl-c-2-pentene: 0 to 2% by mass, preferably 0 to 1.5% by mass % 3-methylcyclopentene: 0 to 1% by mass, preferably 0 to 0.5% by mass c-2-hexene: 0 to 2% by mass, preferably 0 to 1% by mass 3-methyl-t-2-pentene: 0 to 2% by mass, preferably 0 to 1.5% by mass 2,2-dimethylpentane: 0 to 2% by mass, preferably 0 to 1% by mass methylcyclopentane: 0 to 3% by mass, preferably 0 to 0% by mass
2.5% by mass 2,4-dimethylpentane: 0 to 3% by mass, preferably 0 to 2.5% by mass 2,3,3-trimethyl-1-butene: 0 to 1% by mass,
Preferably 0 to 0.5% by mass 2,2,3-trimethylbutane: 0 to 1% by mass, preferably 0 to 0.5% by mass 3,4-dimethyl-1-pentene: 0 to 1% by mass, preferably Is 0 to 0.5% by mass 4,4-dimethyl-c-2-pentene: 0 to 1% by mass,
Preferably 0-0.5% by mass 2,4-dimethyl-1-pentene: 0-1% by mass, preferably 0-0.5% by mass 1-methylcyclopentene: 0-2% by mass, preferably 0-1% 0.5% by mass Benzene: 0 to 1% by mass 2-methyl-c-3-hexene: 0 to 1% by mass, preferably 0 to 0.5% by mass 3,3-dimethylpentane: 0 to 2% by mass, preferably 0 to 1% by mass 5-methyl-1-hexene: 0 to 1% by mass, preferably 0 to 0.5% by mass cyclohexane: 0 to 2% by mass, preferably 0 to 1% by mass 2-methyl-t- 3-hexene: 0 to 1% by mass, preferably 0 to 0.5% by mass 2-methyl-3-ethyl-1-butene: 0 to 1% by mass,
Preferably 0 to 0.5% by mass 4-methyl-1-hexene: 0 to 1% by mass, preferably 0 to 0.5% by mass

Group D includes 4-methyl-c-2-hexene, 2-methylhexane, 2,3-dimethylpentane, 1,1-dimethylcyclopentane, cyclohexene, 3-methylhexane, 3,4-dimethyl- c-2-
Pentene, 1-c, 3-dimethylcyclopentane, 1-
t, 3-dimethylcyclopentane, 3-ethylpentane, 1-t, 2-dimethylcyclopentane, 2,2,4
-Trimethylpentane, 1-heptene, 2-ethyl-1
-Pentene, 3-methyl-c-3-hexene, t-3-
Heptene, n-heptane, 2-methyl-2-hexene,
3-methyl-c-2-hexene, t-2-heptene, 3
-Ethyl-2-pentene, 3-methyl-t-2-hexene, c-2-heptene, 1-c, 2-dimethylcyclopentane, methylcyclohexane, 2,2-dimethylhexane, ethylcyclopentane, 2,5 -Dimethylhexane, 2,2,3-trimethylpentane and 2,4-dimethylhexane. Since the drivability may deteriorate, the content of Group D (total amount, based on the total amount of unleaded gasoline; the same applies hereinafter) is 2% by mass or more, preferably 4% by mass.
It is necessary to be at least 5 mass%. Further, since the fuel efficiency may be deteriorated, the content of Group D is 18% by mass or less, preferably 16% by mass or less, more preferably 14% by mass or less, and still more preferably 12% by mass or less. is necessary.

The contents of the individual components of Group D are not particularly limited, but are preferably as follows.

4-methyl-c-2-hexene: 0 to 2% by mass, preferably 0 to 1% by mass 2-methylhexane: 0 to 5% by mass, preferably 0 to 4%
% By mass 2,3-dimethylpentane: 0 to 2% by mass, preferably 0 to 1.5% by mass 1,1-dimethylcyclopentane: 0 to 1% by mass, preferably 0 to 0.5% by mass cyclohexene: 0 To 1% by mass, preferably 0 to 0.5%
% By mass 3-methylhexane: 0 to 5% by mass, preferably 0 to 4%
% By mass 3,4-dimethyl-c-2-pentene: 0 to 1% by mass,
Preferably 0 to 0.5% by mass 1-c, 3-dimethylcyclopentane: 0 to 2% by mass,
Preferably 0 to 1% by mass 1-t, 3-dimethylcyclopentane: 0 to 2% by mass,
Preferably 0 to 1% by mass 3-ethylpentane: 0 to 2% by mass, preferably 0 to 1%
Mass% 1-t, 2-dimethylcyclopentane: 0 to 2 mass%,
Preferably 0 to 1% by mass of 2,2,4-trimethylpentane: 0% by mass or more, preferably 0.1% by mass or more, more preferably 0.5% by mass or more, still more preferably 1% by mass or more.
% By mass or more, most preferably 2% by mass or more, 20% by mass
Or less, preferably 15% by mass or less, more preferably 12% by mass or less.
1% by weight or less, more preferably 10% by weight or less, most preferably 7% by weight or less 1-heptene: 0 to 1% by weight, preferably 0 to 0.5% by weight 2-ethyl-1-pentene: 0 to 1% by weight %, Preferably 0 to 0.5% by mass 3-methyl-c-3-hexene: 0 to 1% by mass, preferably 0 to 0.5% by mass t-3-heptene: 0 to 2% by mass, preferably 0 to 1% by mass n-heptane: 0 to 3% by mass, preferably 0 to 2.5% by mass 2-methyl-2-hexene: 0 to 2% by mass, preferably 0 to 1% by mass 3-methyl-c -2-hexene: 0 to 2% by mass, preferably 0 to 1% by mass t-2-heptene: 0 to 2% by mass, preferably 0 to 1% by mass 3-ethyl-2-pentene: 0 to 1% by mass , Preferably 0 to 0.5% by mass 3-methyl-t-2-hexene: 0 to 5% by mass, Preferably 0 to 4% by mass c-2-heptene: 0 to 2% by mass, preferably 0 to 1% by mass 1-c, 2-dimethylcyclopentane: 0 to 2% by mass,
Preferably 0 to 1% by weight methylcyclohexane: 0 to 2% by weight, preferably 0 to 2% by weight
1% by mass 2,2-dimethylhexane: 0 to 1% by mass, preferably 0 to 0.5% by mass Ethylcyclopentane: 0 to 2% by mass, preferably 0 to 2% by mass
1% by mass 2,5-dimethylhexane: 0 to 2% by mass, preferably 0 to 1.5% by mass 2,2,3-Trimethylpentane: 0 to 2% by mass, preferably 0 to 1.5% by mass 2 , 4-dimethylhexane: 0 to 2% by mass, preferably 0 to 1.5% by mass

Group E includes 1-c, 2-t, 4-trimethylcyclopentane, 3,3-dimethylhexane,
-T, 2-c, 3-trimethylcyclopentane, 2,
3,4-trimethylpentane, toluene, 2,3-dimethylhexane, 1,1,2-trimethylcyclopentane, 2-methylheptane, 4-methylheptane, 3,4
-Dimethylhexane, 1-c, 3-dimethylcyclohexane, 3-methylheptane, 3-ethylhexane, 1-
t, 4-dimethylcyclohexane, 1,3-octadiene, 1,1-dimethylcyclohexane, 2,2,5-trimethylhexane, 3-c-ethylmethylcyclopentane, 3-t-ethylmethylcyclopentane, 2-t -Ethylmethylcyclopentane, 1,1-ethylmethylcyclopentane, 2,2,4-trimethylhexane, 1-
t, 2-dimethylcyclohexane, t-4-octene,
1-c, 2-c, 3-trimethylcyclopentane, 1-
t, 3-dimethylcyclohexane, n-octane, 2-
Octene, 2,3,5-trimethylhexane, 2,2-
Dimethylheptane, ethylcyclohexane, 2,6-dimethylheptane, 2,4-dimethylheptane, 4,4-
Dimethyl heptane, n-propylcyclopentane, 1-
c, 3-c, 5-trimethylcyclohexane, 2,5-
Dimethylheptane, 3,5-dimethylheptane, 3,3
-Dimethylheptane, 1,1,3-trimethylcyclohexane. Since the drivability, fuel efficiency, and exhaust gas may deteriorate, the content of Group E (total amount, based on the total amount of unleaded gasoline; the same applies hereinafter) is 10% by mass or more, preferably 13% by mass or more, and most preferably It is necessary that the content be 15% by mass or more. In addition, since the drivability, fuel efficiency, and exhaust gas may deteriorate, the content of Group E is 45% by mass or less, preferably 42% by mass or less, more preferably 38% by mass or less, and even more preferably 37% by mass or less.
It is necessary that the content is not more than mass%.

The contents of the individual components of Group E are not particularly limited, but are preferably as follows.

1-c, 2-t, 4-trimethylcyclopentane: 0 to 2% by mass, preferably 0 to 1% by mass 3,3-dimethylhexane: 0 to 1% by mass, preferably 0 to 0.5% Mass% 1-t, 2-c, 3-trimethylcyclopentane: 0
1% by mass, preferably 0 to 0.5% by mass 2,3,4-trimethylpentane: 0% by mass or more, preferably 0.1% by mass or more, more preferably 0.5% by mass
Above, still more preferably 1% by mass or more, 6% by mass or less, preferably 5% by mass or less Toluene: 0% by mass or more, preferably 5% by mass or more, more preferably 7% by mass or more, even more preferably 10% by mass or more
% By mass or more, most preferably 12% by mass or more and 40% by mass or less, preferably 35% by mass or less, more preferably 3% by mass or less.
2% by mass or less, more preferably 30% by mass or less 2,3-dimethylhexane: 0 to 2% by mass, preferably 0 to 1.5% by mass 1,1,2-trimethylcyclopentane: 0 to 1% by mass, Preferably 0 to 0.5% by mass 2-methylheptane: 0 to 2% by mass, preferably 0 to 1%
% By mass 4-methylheptane: 0 to 2% by mass, preferably 0 to 1%
% By mass 3,4-dimethylhexane: 0 to 1% by mass, preferably 0 to 0.5% by mass 1-c, 3-dimethylcyclohexane: 0 to 2% by mass,
Preferably 0 to 1% by mass 3-methylheptane: 0 to 2% by mass, preferably 0 to 2% by mass
1.5% by mass 3-ethylhexane: 0 to 2% by mass, preferably 0 to 1%
Mass% 1-t, 4-dimethylcyclohexane: 0 to 1 mass%,
Preferably 0 to 0.5% by mass 1,3-octadiene: 0 to 1% by mass, preferably 0 to 1% by mass
0.5% by mass, more preferably 0 to 0.1% by mass 1,1-dimethylcyclohexane: 0 to 1% by mass, preferably 0 to 0.5% by mass 2,2,5-trimethylhexane: 0 to 2% Mass%, preferably 0 to 1 mass% 3-c-ethylmethylcyclopentane: 0 to 2 mass%,
Preferably 0 to 1% by mass 3-t-ethylmethylcyclopentane: 0 to 1% by mass,
Preferably 0 to 0.5% by mass 2-t-ethylmethylcyclopentane: 0 to 1% by mass,
Preferably 0 to 0.5% by mass 1,1-ethylmethylcyclopentane: 0 to 1% by mass,
Preferably 0 to 0.5% by mass 2,2,4-trimethylhexane: 0 to 1% by mass, preferably 0 to 0.5% by mass 1-t, 2-dimethylcyclohexane: 0 to 1% by mass,
Preferably 0-0.5% by mass t-4-octene: 0-1% by mass, preferably 0-0.
5% by mass 1-c, 2-c, 3-trimethylcyclopentane: 0
2% by mass, preferably 0 to 1% by mass 1-t, 3-dimethylcyclohexane: 0 to 2% by mass,
Preferably 0 to 1% by mass n-octane: 0 to 2% by mass, preferably 0 to 1% by mass 2-octene: 0 to 1% by mass, preferably 0 to 0.5% by mass 2,3,5-trimethyl Hexane: 0 to 1% by mass, preferably 0 to 0.5% by mass 2,2-dimethylheptane: 0 to 1% by mass, preferably 0 to 0.5% by mass ethylcyclohexane: 0 to 1% by mass, preferably 0 to
0.5% by mass 2,6-dimethylheptane: 0 to 1% by mass, preferably 0 to 0.5% by mass 2,4-dimethylheptane: 0 to 1% by mass, preferably 0 to 0.5% by mass 4 , 4-dimethylheptane: 0 to 1% by mass, preferably 0 to 0.5% by mass n-propylcyclopentane: 0 to 1% by mass, preferably 0 to 0.5% by mass 1-c, 3-c, 5-trimethylcyclohexane: 0
1% by mass, preferably 0 to 0.5% by mass 2,5-dimethylheptane: 0 to 1% by mass, preferably 0 to 0.5% by mass 3,5-dimethylheptane: 0 to 1% by mass, preferably 0-0.5% by mass 3,3-dimethylheptane: 0-1% by mass, preferably 0-0.5% by mass 1,1,3-trimethylcyclohexane: 0-1% by mass, preferably 0-0. 5% by mass

Group F includes 2,4-dimethyl-1-heptene, ethylbenzene, 1-c, 2-t, 4-trimethylcyclohexane, 2-methyl-1-octene, 2-methyl-1-octene,
Methyl-2-octene, 1,3-dimethylbenzene (m
-Xylene), 1,4-dimethylbenzene (p-xylene), 3,4-dimethylheptane, 4-ethylheptane, 4-methyloctane, 2-methyloctane, 3-ethylheptane, 3-methyloctane, 1- c, 2-t,
4-c-trimethylcyclohexane, 1,2-dimethylbenzene (o-xylene), 1-nonene, isobutylcyclopentane, c-2-nonene, t-3-nonene, n-
Nonane, 1,1-methylethylcyclohexane, t-
2,2,5,5-tetramethyl-3-hexene, isopropylbenzene, c-3-nonene, 2,2-dimethyloctane, 2,4-dimethyloctane, 2,6-dimethyloctane, 2,5-dimethyl Octane, n-butylcyclopentane, 3,3-dimethyloctane, n-propylbenzene, 3-methyl-5-ethylheptane, 1,3-
Methylethylbenzene, 1,4-methylethylbenzene, 1,3,5-trimethylbenzene, 5-methylnonane, 1,2-methylethylbenzene, 2-methylnonane, 3-methylnonane, 3-ethyl-2-methyl-2-
Heptene, 1,2,4-trimethylbenzene, isobutylcyclohexane, 1-decene, isobutylbenzene,
sec-butylbenzene, n-decane, 1,2,3-trimethylbenzene, 1,3-methylisopropylbenzene, 1,4-methylisopropylbenzene, and 2,3-dihydroindene (indane). Since the fuel efficiency may deteriorate, the content of Group F (total amount, based on the total amount of unleaded gasoline; the same applies hereinafter) is 3% by mass or more, preferably 5% by mass, more preferably 9% by mass or more, and even more. Preferably, it is necessary to be 10% by mass or more. Also, hydrocarbons in the exhaust gas may increase, operability in cold operation may be impaired, intake valve deposits and combustion chamber deposits may increase, smoldering of spark plugs The content of group F is 38% by mass or less,
Preferably 35% by mass or less, more preferably 33% by mass
Below, it is still more preferable that it is 31 mass% or less.

The content of each component of Group F is not particularly limited, but is preferably as follows.

2,4-dimethyl-1-heptene: 0 to 1
% By mass, preferably 0 to 0.5% by mass ethylbenzene: 0% by mass or more, preferably 0.1% by mass or more, more preferably 0.2% by mass or more, still more preferably 0.5% by mass or more, most preferably Preferably 1% by mass
10% by mass or less, preferably 8% by mass or less, more preferably 6% by mass or less, still more preferably 5% by mass or less, and most preferably 4% by mass or less 1-c, 2-t, 4-trimethylcyclohexane: 0 to
1% by mass, preferably 0 to 0.5% by mass 2-methyl-1-octene: 0 to 1% by mass, preferably 0 to 0.5% by mass 2-methyl-2-octene: 0 to 1% by mass, Preferably 0 to 0.5% by mass 1,3-dimethylbenzene (m-xylene): 0% by mass
Or more, preferably 0.1% by mass or more, more preferably 0.2% by mass or more, still more preferably 0.5% by mass.
Or more, most preferably 1% by mass or more and 15% by mass or less,
Preferably 12% by mass or less, more preferably 10% by mass
The following 1,4-dimethylbenzene (p-xylene): 0% by mass
Or more, preferably 0.1% by mass or more, more preferably 0.2% by mass or more, still more preferably 0.5% by mass.
Or more, most preferably 1% by mass or more and 10% by mass or less,
Preferably not more than 6% by mass, more preferably not more than 5% by mass, still more preferably not more than 4% by mass 3,4-dimethylheptane: 0 to 1% by mass, preferably 0 to 0.5% by mass 4-ethylheptane: 0 To 1% by mass, preferably 0 to
0.5% by mass 4-methyloctane: 0 to 1% by mass, preferably 0 to 1% by mass
0.5% by mass 2-methyloctane: 0 to 2% by mass, preferably 0 to 1%
% By mass 3-ethylheptane: 0 to 1% by mass, preferably 0 to 1% by mass
0.5% by mass 3-methyloctane: 0 to 2% by mass, preferably 0 to 1%
% By mass 1-c, 2-t, 4-c-trimethylcyclohexane:
0 to 1% by mass, preferably 0 to 0.5% by mass 1,2-dimethylbenzene (o-xylene): 0% by mass
Or more, preferably 0.1% by mass or more, more preferably 0.2% by mass or more, still more preferably 0.5% by mass.
Or more, most preferably 1% by mass or more and 10% by mass or less,
1 mass% or less, more preferably 6 mass% or less, further preferably 5 mass% or less 1-nonene: 0 to 1 mass%, more preferably 0 to 0.5 mass%
% By mass isobutylcyclopentane: 0 to 1% by mass, preferably 0 to 0.5% by mass c-2-nonene: 0 to 1% by mass, preferably 0 to 0.5% by mass
% By mass t-3-nonene: 0 to 1% by mass, preferably 0 to 0.5%
% By mass n-nonane: 0 to 1% by mass, preferably 0 to 0.5% by mass 1,1-methylethylcyclohexane: 0 to 1% by mass,
Preferably 0 to 0.5% by mass t-2,2,5,5-tetramethyl-3-hexene: 0
Isopropylbenzene: 0 to 2% by mass, preferably 0 to 1% by mass, preferably 0 to 0.5% by mass.
1% by mass c-3-nonene: 0 to 1% by mass, preferably 0 to 0.5%
% By mass 2,2-dimethyloctane: 0 to 1% by mass, preferably 0 to 0.5% by mass 2,4-dimethyloctane: 0 to 1% by mass, preferably 0 to 0.5% by mass 2,6- Dimethyloctane: 0 to 1% by mass, preferably 0 to 0.5% by mass 2,5-Dimethyloctane: 0 to 1% by mass, preferably 0 to 0.5% by mass n-butylcyclopentane: 0 to 1% by mass %, Preferably 0 to 0.5% by weight 3,3-dimethyloctane: 0 to 1% by weight, preferably 0 to 0.5% by weight n-propylbenzene: 0 to 3% by weight, preferably 0 to 0% by weight
2.5% by mass 3-methyl-5-ethylheptane: 0 to 1% by mass, preferably 0 to 0.5% by mass 1,3-methylethylbenzene: 0% by mass or more, preferably 0.1% by mass or more, More preferably 0.3% by mass or more, even more preferably 0.5% by mass or more, most preferably 1% by mass or more, 6% by mass or less, preferably 5% by mass or less 1,4-methylethylbenzene: 0% by mass Or more, preferably 0.1% by mass or more, more preferably 0.3% by mass or more, even more preferably 0.5% by mass or more, 4% by mass
1,3,5-trimethylbenzene: 0% by mass or more, preferably 0.1% by mass or more, more preferably 0.3% by mass or less
Above, still more preferably 0.5% by mass or more and 4% by mass or less, preferably 3% by mass or less 5-methylnonane: 0 to 2% by mass, preferably 0 to 1% by mass 1,2-methylethylbenzene: 0% by mass % Or more, preferably 0.1% or more, more preferably 0.3% or more, still more preferably 0.5% or more, 4% by mass.
Or less, preferably 3% by mass or less 2-methylnonane: 0 to 1% by mass, preferably 0 to 0.1% by mass.
5% by mass 3-methylnonane: 0 to 1% by mass, preferably 0 to 0.
5% by mass 3-ethyl-2-methyl-2-heptene: 0 to 1% by mass, preferably 0 to 0.5% by mass 1,2,4-trimethylbenzene: 0% by mass or more, preferably 0.5% by mass % Or more, more preferably 1% or more, still more preferably 1.5% or more, most preferably 2% or more and 10% or less, preferably 7% or less, more preferably 6% or less, More preferably 5% by mass or less Isobutylcyclohexane: 0 to 1% by mass, preferably 0 to 0.5% by mass 1-decene: 0 to 1% by mass, preferably 0 to 0.5% by mass isobutylbenzene: 0 to 1% % By mass, preferably 0 to
0.5% by mass sec-butylbenzene: 0 to 2% by mass, preferably 0%
N-decane: 0 to 1% by mass, preferably 0 to 0.5% by mass 1,2,3-trimethylbenzene: 0% by mass or more, preferably 0.1% by mass or more, more preferably Is 0.3% by mass
Above, even more preferably 0.5% by mass or more and 4% by mass or less, preferably 3% by mass or less 1,3-methylisopropylbenzene: 0 to 1% by mass,
Preferably 0 to 0.5% by mass 1,4-methylisopropylbenzene: 0 to 1% by mass,
Preferably 0 to 0.5% by mass 2,3-dihydroindene (indane): 0 to 2% by mass, preferably 0 to 1% by mass

Group G includes sec-butylcyclohexane, 1,2-methylisopropylbenzene, 3-ethylnonane, 1,3-diethylbenzene, 1,3-methyl-n-propylbenzene, 1,4-methyl-n-propyl Benzene, n-butylbenzene, 1,3-dimethyl-
5-ethylbenzene, 1,2-diethylbenzene, 1,
2-methyl-n-propylbenzene, 1,4-dimethyl-2-ethylbenzene, 1,3-dimethyl-4-ethylbenzene, 1,2-dimethyl-4-ethylbenzene,
1,3-dimethyl-2-ethylbenzene, 1-undecene, 1,4-methyl-t-butylbenzene, 1,2-dimethyl-3-ethylbenzene, n-undecane, 1,
2,4,5-tetramethylbenzene, 1,2,3,5-
Tetramethylbenzene, 5-methylindane, 4-methylindane, 1,2-ethyl-n-propylbenzene,
1,3-diisopropylbenzene, 1,2-diisopropylbenzene, 1,4-diisopropylbenzene, tetrahydronaphthalene, naphthalene, 1,4-ethyl-t
-Butylbenzene, 1,3-di-n-propylbenzene, n-dodecane, 2-methylnaphthalene, n-tridecane, 1-methylnaphthalene, n-tetradecane. The content of the group G (total amount, based on the total amount of unleaded gasoline; the same applies hereinafter) is 0 to 5 due to the possibility of smoldering of the spark plug and the possibility of increasing the intake valve deposit and the combustion chamber deposit. It is necessary that the content be 0% by mass, preferably 0% to 4% by mass, more preferably 0% to 3% by mass, and still more preferably 0% to 2.7% by mass.

The content of each component of Group G is not particularly limited, but is preferably as follows.

Sec-butylcyclohexane: 0 to 1% by mass, preferably 0 to 0.5% by mass 1,2-methylisopropylbenzene: 0 to 1% by mass,
Preferably 0 to 0.5% by mass 3-ethylnonane: 0 to 2% by mass, preferably 0 to 1% by mass 1,3-diethylbenzene: 0 to 2% by mass, preferably 0 to 1% by mass 1,3-methyl -N-propylbenzene: 0 to 2% by mass, preferably 0 to 1% by mass 1,4-methyl-n-propylbenzene: 0 to 2% by mass, preferably 0 to 1% by mass n-butylbenzene: 0 to 0% by mass 1% by mass, preferably 0 to
0.5% by mass 1,3-dimethyl-5-ethylbenzene: 0 to 2% by mass, preferably 0 to 1% by mass 1,2-diethylbenzene: 0 to 1% by mass, preferably 0 to 0.5% by mass 1 1,2-methyl-n-propylbenzene: 0 to 2% by mass, preferably 0 to 1% by mass 1,4-dimethyl-2-ethylbenzene: 0 to 2% by mass, preferably 0 to 1% by mass 1,3- Dimethyl-4-ethylbenzene: 0 to 2% by mass, preferably 0 to 1% by mass 1,2-dimethyl-4-ethylbenzene: 0 to 2% by mass, preferably 0 to 1.5% by mass 1,3-dimethyl- 2-ethylbenzene: 0 to 2% by mass, preferably 0 to 1% by mass 1-undecene: 0 to 1% by mass, preferably 0 to 0.5%
% By mass 1,4-methyl-t-butylbenzene: 0 to 1% by mass,
Preferably it is 0-0.5 mass%, More preferably, it is 0-0.
1% by mass 1,2-dimethyl-3-ethylbenzene: 0 to 2% by mass, preferably 0 to 1% by mass n-undecane: 0 to 1% by mass, preferably 0 to 0.5%
% By mass 1,2,4,5-tetramethylbenzene: 0 to 2% by mass, preferably 0 to 1% by mass 1,2,3,5-tetramethylbenzene: 0 to 2% by mass, preferably 0 to 1% by mass % By mass 5-methylindane: 0 to 2% by mass, preferably 0 to 1%
% By mass 4-methylindane: 0 to 1% by mass, preferably 0 to 1% by mass
0.5 mass% 1,2-ethyl-n-propylbenzene: 0-2 mass%, preferably 0-1 mass%, more preferably 0-0.
5% by mass, more preferably 0 to 0.2% by mass 1,3-diisopropylbenzene: 0 to 2% by mass, preferably 0 to 1% by mass, more preferably 0 to 0.5% by mass, further preferably 0% 1,2-diisopropylbenzene: 0 to 1% by mass, preferably 0 to 0.5% by mass, more preferably 0 to 0.1% by mass 1,4-diisopropylbenzene: 0 to 1% by mass %, Preferably 0 to 0.5% by mass, more preferably 0 to 0.1% by mass tetrahydronaphthalene: 0 to 1% by mass, preferably 0%
Naphthalene: 0 to 2% by mass, preferably 0 to 1% by mass,
More preferably, it is 0 to 0.5% by mass, and still more preferably 0
-0.2 mass% 1,4-ethyl-t-butylbenzene: 0-1 mass%,
Preferably it is 0-0.5 mass%, More preferably, it is 0-0.
1% by mass 1,3-di-n-propylbenzene: 0 to 1% by mass, preferably 0 to 0.5% by mass, more preferably 0 to 0.1% by mass
% By mass n-dodecane: 0 to 1% by mass, preferably 0 to 0.5% by mass 2-methylnaphthalene: 0 to 2% by mass, preferably 0 to 0% by mass
1% by mass, more preferably 0 to 0.5% by mass, further preferably 0 to 0.2% by mass n-tridecane: 0 to 1% by mass, preferably 0 to 0.5% by mass
% By mass 1-methylnaphthalene: 0 to 1% by mass, preferably 0 to 1% by mass
0.5% by mass, more preferably 0 to 0.1% by mass n-tetradecane: 0 to 1% by mass, preferably 0 to 0.1% by mass.
5% by mass

The total content (based on the total amount of unleaded gasoline; the same applies hereinafter) of each of the groups A to G is 85% by mass because drivability, fuel efficiency, and exhaust gas may be deteriorated. -100% by mass, preferably 90-100% by mass, more preferably 95-100% by mass.

The total content of each group and the individual contents of the components of each group were all based on JIS K 2
536 means the content measured according to the "test method for all components by gas chromatography" of "petroleum products-component test method".

<Other Properties> The unleaded gasoline of the present invention can satisfy various performances required as a fuel oil for automobiles if the above-mentioned conditions are satisfied. Since the performance can be improved, the unwashed real gum measured by JIS K 2261 “Petroleum products-automobile gasoline and aviation fuel oil-real gum test method-jet evaporation method” is 20 m.
g / 100 ml or less, and the washed real gum is preferably 3 mg / 100 ml or less, more preferably 1 mg / 100 ml or less. If these values exceed the above values, there is a concern that deposits may be formed in the fuel introduction system or that the suction valve may stick.

In the unleaded gasoline of the present invention, the content of the oxygen-containing compound is 0 to 2.7% by mass, preferably 0 to 2.0% by mass in terms of oxygen element based on the total amount of unleaded gasoline.
It is necessary to be. If it exceeds 2.7% by mass, the fuel efficiency of unleaded gasoline deteriorates, and the N
Ox may increase.

Here, the oxygen-containing compound refers to alcohols having 2 to 4 carbon atoms, ethers having 4 to 8 carbon atoms, and the like.
Examples of the oxygen-containing compound that can be blended with the unleaded gasoline of the present invention include ethanol, methyl tertiary butyl ether (MTBE), ethyl tertiary butyl ether, tertiary amyl methyl ether (TAME), and tertiary amyl ethyl ether. MT
BE and TAME are preferred, and most preferably MTBE. In addition, methanol is not preferable because the concentration of aldehyde in the exhaust gas may be high and corrosive.

Further, the unleaded gasoline according to the present invention is
The total calorific value measured by K 2279 “Crude oil and petroleum products-Calorific value test method and estimation method by calculation” is 40
It is necessary to be 000 J / g or more, preferably 45,000 J / g or more.

Further, the unleaded gasoline according to the present invention is
The oxidation stability measured by K 2287 "Gasoline Oxidation Stability Test Method (Induction Period Method)" was 480 minutes or more.
Preferably, it is necessary to be 1440 minutes or more. If the oxidation stability is less than 480 minutes, gums may form during storage.

The unleaded gasoline of the present invention has a copper plate corrosion (50 ° C., 3 hours) of 1, preferably 1a. If the copper plate corrosion exceeds 1, the fuel system conduit may corrode.

Here, copper plate corrosion refers to JIS K 25
13 "Petroleum products-Copper plate corrosion test method" (test temperature 50
C., test time 3 hours).

<Production Method> The unleaded gasoline of the present invention can be produced by any method. As the gasoline base material used at this time, for example, light naphtha having a desired property and obtained by distilling crude oil under normal pressure; cracked gasoline obtained by catalytic cracking, hydrocracking, etc .; Reformed gasoline obtained; polymerized gasoline obtained by polymerization of olefin; alkylate obtained by adding (alkylating) a lower olefin to a hydrocarbon such as isobutane; obtained by converting light naphtha to isoparaffin with an isomerizer. Isomerized gasoline; de-n-paraffinized oil; butane; aromatic hydrocarbon compounds; propylene, which is dimerized and subsequently hydrogenated to obtain a paraffin fraction.

To explain a typical example of blending, the unleaded gasoline of the present invention is, for example, (1) reformed gasoline, 0 to 70% by mass (2) light fraction of reformed gasoline (boiling point range: 25 to 12)
0 ° C), 0-35% by mass (3) Heavy fraction of reformed gasoline (boiling point range, 110 ° C-
(About 200 ° C.), 0 to 45% by mass (4) Cracked gasoline, 0 to 50% by mass (5) Light fraction of cracked gasoline (boiling point range: 25 to 90%)
℃), 0 to 45% by mass (6) Alkylate, 0 to 40% by mass (7) Paraffin fraction obtained by dimerizing propylene followed by hydrogenation, 0 to 30% by mass (8) Isomerized gasoline, 0 to 30% by mass (9) MTBE, 0 to 15% by mass (10) Light naphtha, 0 to 10% by mass (11) Butane, 0 to 10% by mass In this case, the individual blending amounts of the blended base materials are, of course, selected from the above ranges so that the finally obtained unleaded gasoline satisfies the requirements of the present invention.

In producing the unleaded gasoline of the present invention, when the content of benzene is reduced, any method of reducing the benzene content may be used. (1) Distill the reformed gasoline to remove the benzene fraction. (2) Extract the benzene in the reformed gasoline using a solvent such as sulfolane. (3-1) Hydrogenates benzene and converts it to cyclohexane, methylcyclopentane, etc. (3-2) Reacts with benzene and aromatic hydrocarbon compounds having 9 or more carbon atoms (3-3) Benzene is converted to lower olefin (ethylene, propylene, etc.) or lower alcohol (4) Using a desulfurized heavy naphtha obtained by distilling and removing a hydrocarbon compound having 6 carbon atoms as a raw material of the catalytic reformer (5) Catalytic reformer It is preferable to perform a process of reducing the benzene concentration in the reformed gasoline by a method such as changing the operating conditions of the gasoline, and use this as a gasoline base material.

It is desirable to add a detergent and dispersant such as succinimide, polyalkylamine and polyetheramine to the unleaded gasoline of the present invention. It is preferable that there is no residue.

[0124] Other known fuel oil additives can be added to the unleaded gasoline of the present invention, if necessary. Specific examples of such additives include antioxidants such as phenol-based and amine-based compounds; metal deactivators such as Schiff-type compounds and thioamide-type compounds; surface ignition inhibitors such as organic phosphorus-based compounds; Anti-freezing agents such as polyhydric alcohols and ethers thereof; alkali metal or alkaline earth metal salts of organic acids, and flame retardants such as higher alcohol sulfates; anionic surfactants, cationic surfactants, amphoteric surfactants Coloring agents such as azo dyes; rust inhibitors such as alkenyl succinates; discriminating agents such as chilizanine and coumarin; and odorants such as natural essential oils and synthetic fragrances. One or more of these additives can be added, and the total amount of the additives is preferably 0.1% by mass or less based on the total amount of gasoline.

[0125]

Next, the present invention will be described in more detail by way of examples, which should not be construed as limiting the present invention.

Examples 1 to 4 First, the properties and compositions of the unleaded gasoline used in the examples are shown in Tables 1 to 8.

[0127]

[Table 1]

[Table 2]

[Table 3]

[Table 4]

[Table 5]

[Table 6]

[Table 7]

[Table 8]

The following tests were performed using each of the above-mentioned unleaded gasolines.

<10-15 mode test> Displacement 2.5
L, using a fuel-injection premium model, TRI
In accordance with AS 23-4-1991, "Testing method for gasoline vehicle idling and 10.15 mode exhaust gas", 10.15 mode exhaust gas is sampled and NOx, C
The amounts of O and HC were measured. Table 9 shows the results.

Further, using a 2.5-liter, fuel-injection premium-spec vehicle, TRIAS 5-3-199 was used.
1 The fuel economy of the 10.15 mode was measured in accordance with "10.15 mode fuel consumption test method for gasoline vehicles".
Table 9 shows the results.

<Low-temperature drivability test>
Drivability when driving according to a running pattern based on the RC method (CRC Report No. 483) was evaluated.

The contents were evaluated for surge, rattle, breath, backfire, stall, idle stability and startability. As an evaluation method, (evaluation score) × (coefficient) was calculated from the demerit evaluation score given according to the degree of the phenomenon that occurred and a coefficient corresponding to the evaluation content, and finally all items were totaled. Table 9 shows the totaled results.

Evaluation score Trace: 1 Moderate: 2 Heavy: 3 coefficient Raffidle, starting time: 1 Surge: 4 Swaying, breathing, backfire: 6 Idle stall: 8 Running stall: 32

<Normal-temperature drivability test>
AE Review Vol. 11 No. Drivability in the operation mode described in No. 4 was evaluated. For the startability, the start time was measured. In addition, 1 point trace, sag, hesitation, backfire, moderation 2
Points and four heavy points. Table 9 shows the results.

<High Temperature Drivability Test> At an outside air temperature of 35 ° C., CR
Drivability when driving according to a running pattern based on the C method (CRC Report No. 490) was evaluated. Evaluation content is acceleration after off-soak (30km / h → 1)
20km / h) Time increase rate, acceleration after idle soak (3
0 km / h → 120 km / h) The time increase rate and the restart time were measured. Table 9 shows the results.

[0136]

[Table 9]

[0137]

As is clear from the results in Table 9, when the unleaded gasoline according to the present invention is used, the amount of NOx, CO, and HC in the exhaust gas is small, and the introduction is scheduled for 2000. It is less than half of the exhaust gas regulation value. Also, it can be seen that the fuel efficiency is excellent.

Further, it can be seen that the unleaded gasoline of Examples 1 and 2 has excellent drivability at low and normal temperatures. In addition, it can be seen that the unleaded gasolines of Examples 3 and 4 have excellent operability at high and normal temperatures.

Claims (1)

[Claims] 1. An unleaded gasoline that satisfies all of the following conditions (1) to (16): (1) a research octane number of 96 or more, (2) a motor octane number of 84 or more, and (3) a density (15 ° C.) ) Is 0.72 to 0.77 g / cm ³ (4) The vapor pressure is 44 to 93 kPa (5) The initial distillation point is 20 to 37 ° C (6) The 10% distillation temperature is 35 to 70 ° C (7) 30 (8) 50% distillation temperature is 75-105 ° C. (9) 70% distillation temperature is 100-130 ° C. (10) 90% distillation temperature is 115-180 ° C (11). ) Distillation end point is 150 to 220 ° C. (12) Aromatic content 20 to 45% by volume (13) Olefin content 0 to 25% by volume (14) Sulfur content 0 to 50 ppm (15) Benzene content 0 to 5% by volume ( 16) Methyl-t-butyl ether (MTBE) content 0 to 15% by volume and the components in the unleaded gasoline are grouped as follows: Group A: propane, 2-methylpropane (isobutane), 1-butene, 2-methylpropene (isobutylene), n-butane, t-2-butene, 2,2-dimethylpropane, c-2-butene, 3-methyl-1-butene,
2-methylbutane (isopentane) group B: 1-pentene, 2-methyl-1-butene,
n-pentane, 2-methyl-1,3-butadiene (isoprene), t-2-pentene, 3,3-dimethyl-1-
Butene, c-2-pentene, 2-methyl-2-butene,
1-t, 3-pentadiene, cyclopentadiene, 2,
2-dimethylbutane, cyclopentene, 4-methyl-1
-Pentene, 3-methyl-1-pentene, cyclopentane, 2,3-dimethylbutane, methyl-t-butyl ether (MTBE), 2,3-dimethyl-1-butene,
-Methyl-c-2-pentene, 2-methylpentane Group C: 4-methyl-t-2-pentene, 3-methylpentane, 2-methyl-1-pentene, 1-hexene, n-hexane, t-3 -Hexene, c-3-hexene, t-2-hexene, 2-methyl-2-pentene, 3
-Methyl-c-2-pentene, 3-methylcyclopentene, c-2-hexene, 3-methyl-t-2-pentene, 2,2-dimethylpentane, methylcyclopentane, 2,4-dimethylpentane, 2, 3,3-trimethyl-1-butene, 2,2,3-trimethylbutane, 3,
4-dimethyl-1-pentene, 4,4-dimethyl-c-
2-pentene, 2,4-dimethyl-1-pentene, 1-
Methylcyclopentene, benzene, 2-methyl-c-3
-Hexene, 3,3-dimethylpentane, 5-methyl-
1-hexene, cyclohexane, 2-methyl-t-3-
Hexene, 2-methyl-3-ethyl-1-butene, 4-
Methyl-1-hexene Group D: 4-methyl-c-2-hexene, 2-methylhexane, 2,3-dimethylpentane, 1,1-dimethylcyclopentane, cyclohexene, 3-methylhexane, 3,4-dimethyl -C-2-pentene, 1-c,
3-dimethylcyclopentane, 1-t, 3-dimethylcyclopentane, 3-ethylpentane, 1-t, 2-dimethylcyclopentane, 2,2,4-trimethylpentane, 1-heptene, 2-ethyl-1- Pentene, 3-methyl-c-3-hexene, t-3-heptene, n-heptane, 2-methyl-2-hexene, 3-methyl-c-2
-Hexene, t-2-heptene, 3-ethyl-2-pentene, 3-methyl-t-2-hexene, c-2-heptene, 1-c, 2-dimethylcyclopentane, methylcyclohexane, 2,2- Dimethylhexane, ethylcyclopentane, 2,5-dimethylhexane, 2,2,3-trimethylpentane, 2,4-dimethylhexane Group E: 1-c, 2-t, 4-trimethylcyclopentane, 3,3- Dimethylhexane, 1-t, 2-c,
3-trimethylcyclopentane, 2,3,4-trimethylpentane, toluene, 2,3-dimethylhexane,
1,1,2-trimethylcyclopentane, 2-methylheptane, 4-methylheptane, 3,4-dimethylhexane, 1-c, 3-dimethylcyclohexane, 3-methylheptane, 3-ethylhexane, 1-t, 4-dimethylcyclohexane, 1,3-octadiene, 1,1-dimethylcyclohexane, 2,2,5-trimethylhexane, 3-c-ethylmethylcyclopentane, 3-t-ethylmethylcyclopentane, 2-t-ethyl Methylcyclopentane, 1,1-ethylmethylcyclopentane,
2,2,4-trimethylhexane, 1-t, 2-dimethylcyclohexane, t-4-octene, 1-c, 2-
c, 3-trimethylcyclopentane, 1-t, 3-dimethylcyclohexane, n-octane, 2-octene,
2,3,5-trimethylhexane, 2,2-dimethylheptane, ethylcyclohexane, 2,6-dimethylheptane, 2,4-dimethylheptane, 4,4-dimethylheptane, n-propylcyclopentane, 1-c, 3-
c, 5-Trimethylcyclohexane, 2,5-dimethylheptane, 3,5-dimethylheptane, 3,3-dimethylheptane, 1,1,3-trimethylcyclohexane Group F: 2,4-dimethyl-1-heptene, ethylbenzene , 1-c, 2-t, 4-trimethylcyclohexane, 2-methyl-1-octene, 2-methyl-2-octene, 1,3-dimethylbenzene (m-xylene),
1,4-dimethylbenzene (p-xylene), 3,4-
Dimethylheptane, 4-ethylheptane, 4-methyloctane, 2-methyloctane, 3-ethylheptane, 3
-Methyloctane, 1-c, 2-t, 4-c-trimethylcyclohexane, 1,2-dimethylbenzene (o-xylene), 1-nonene, isobutylcyclopentane, c
-2-nonene, t-3-nonene, n-nonane, 1,1-
Methylethylcyclohexane, t-2,2,5,5-tetramethyl-3-hexene, isopropylbenzene, c
-3-nonene, 2,2-dimethyloctane, 2,4-dimethyloctane, 2,6-dimethyloctane, 2,5-
Dimethyloctane, n-butylcyclopentane, 3,3
-Dimethyloctane, n-propylbenzene, 3-methyl-5-ethylheptane, 1,3-methylethylbenzene, 1,4-methylethylbenzene, 1,3,5-trimethylbenzene, 5-methylnonane, 1,2-methyl Ethylbenzene, 2-methylnonane, 3-methylnonane,
3-ethyl-2-methyl-2-heptene, 1,2,4-
Trimethylbenzene, isobutylcyclohexane, 1-
Decene, isobutylbenzene, sec-butylbenzene, n-decane, 1,2,3-trimethylbenzene,
1,3-methylisopropylbenzene, 1,4-methylisopropylbenzene, 2,3-dihydroindene (indane) Group G: sec-butylcyclohexane, 1,2-
Methyl isopropylbenzene, 3-ethylnonane, 1,
3-diethylbenzene, 1,3-methyl-n-propylbenzene, 1,4-methyl-n-propylbenzene, n
-Butylbenzene, 1,3-dimethyl-5-ethylbenzene, 1,2-diethylbenzene, 1,2-methyl-n
-Propylbenzene, 1,4-dimethyl-2-ethylbenzene, 1,3-dimethyl-4-ethylbenzene, 1,
2-dimethyl-4-ethylbenzene, 1,3-dimethyl-2-ethylbenzene, 1-undecene, 1,4-methyl-t-butylbenzene, 1,2-dimethyl-3-ethylbenzene, n-undecane, 1,2 , 4,5-tetramethylbenzene, 1,2,3,5-tetramethylbenzene, 5-methylindane, 4-methylindane, 1,2
-Ethyl-n-propylbenzene, 1,3-diisopropylbenzene, 1,2-diisopropylbenzene, 1,
4-diisopropylbenzene, tetrahydronaphthalene, naphthalene, 1,4-ethyl-t-butylbenzene, 1,3-di-n-propylbenzene, n-dodecane, 2-methylnaphthalene, n-tridecane, 1-methylnaphthalene, n-tetradecane An unleaded gasoline characterized in that the content of each group satisfies the following conditions based on the total amount of unleaded gasoline. Group A: 5 to 32% by mass Group B: 10 to 25% by mass Group C: 1 to 18% by mass Group D: 2 to 18% by mass Group E: 10 to 45% by mass Group F: 3 to 38% by mass Group G : 0 to 5% by mass Total amount of groups A to G: 85 to 100% by mass