| abstract |
(57) [Abstract] [Purpose] To provide a lead-free high-performance gasoline which has various characteristics within the specifications of gasoline for competitive automobiles and which can easily cope with the specifications which are slightly changed year by year. [Structure] Toluene 50-70 vol%, normal heptane 2-10 vol%, isopentane 5-25 vol %, Straight run light naphtha 10 to 30 vol% if necessary, C4 cut containing 2-5 vol% or toluene 45-6 0 vol%, methyl tertiary butyl ether 10 20 vol%, normal heptane 10 to 20 vol%, Isopentane 5 to 15 vol%, C4 fraction 2 to 5 vol %, Including density (15 ° C.) ≦ 0.81 g / cm 3 , 97 <RON ≦ 101, RVP ≧ 0.4 kg / cm 2 are satisfied. Then, by changing the blending amount of each of the above components within the above range, it is possible to easily cope with the change of the fuel standard in each rally or race every year without lowering the output characteristics. |