研究法的辛烷值 RON = "Research Octane Number", octane number, which have been measured in the medium or low speed range
动力法的辛烷值 MON = also "Motor Octane Number" is the octane number that I measured in the high speed range
测量汽油的抗爆指数 AKI = (RON + MON) ÷ 2 = "Anti Knocking Index"
日本工业规格JIS规定,
普通无铅汽油的定义是高于89号,日本市场上贩售的一般是90~91号普通无铅汽油。"Regular" gasoline in Japan (Japanese Industrial Standards) RON 90 / MON 81/ AKI 85.5
高级无铅汽油的定义是高于96号,日本市场上贩售的一般是98~100号高级无铅汽油,对100号的正确理解应该是其辛烷值幅度在98~100之间。
"Premium" gasoline in Japan (Japanese Industrial Standards) RON 100 / MON 84/ AKI 92