High-octane-rating gasolines
First Claim
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1. A gasoline free from lead and of high octane number which comprises base gasolines so blended as to meet the distillation and composition characteristics of equations (I) to (VI) ##EQU5## where T30 is a 30% distillation temperature, T70 is a 70% distillation temperature, T90 is a 90% distillation temperature, VO(WHOLE) is an olefins content in the total gasoline, VA(WHOLE) is an aromatics content in the total gasoline, VO(≦
- T30) is an olefins content in the total volume of a fraction boiling at or below T30, and VA(>
T70) is an aromatics content in the total volume of a fraction boiling at or above T70.
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Abstract
Lead-free, high-octane gasoline is disclosed which is so composed as to have specified distillation and composition characteristics. The gasoline is excellent with respect to stability to ambient conditions, acceleration over a wide range of running speeds, and startability and warmup at low temperature.
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Citations
5 Claims
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1. A gasoline free from lead and of high octane number which comprises base gasolines so blended as to meet the distillation and composition characteristics of equations (I) to (VI) ##EQU5## where T30 is a 30% distillation temperature, T70 is a 70% distillation temperature, T90 is a 90% distillation temperature, VO(WHOLE) is an olefins content in the total gasoline, VA(WHOLE) is an aromatics content in the total gasoline, VO(≦
- T30) is an olefins content in the total volume of a fraction boiling at or below T30, and VA(>
T70) is an aromatics content in the total volume of a fraction boiling at or above T70. - View Dependent Claims (2)
- T30) is an olefins content in the total volume of a fraction boiling at or below T30, and VA(>
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3. A gasoline free from lead and of greater than 95 research octane number which comprises base gasolines and at least one fuel component in an amount of 5 to 40% by volume of the total gasoline, said fuel component being either one or both of an isomerate and a n-paraffin-free oil, thereby meeting the distillation and composition characteristics of equations (VII) to (XII) ##EQU6## where T30 is a 30% distillation temperature, T70 is a 70% distillation temperature, T90 is a 90% distillation temperature, VO(WHOLE) is an olefins content in the total gasoline, VA(WHOLE) is an aromatics content in the total gasoline, VO(≦
- T30) is an olefins content in the total volume of a fraction boiling at or below T30, and VA(>
T70) is an aromatics content in the total volume of a fraction boiling at or above T70. - View Dependent Claims (4, 5)
- T30) is an olefins content in the total volume of a fraction boiling at or below T30, and VA(>
Specification