1.1本规范涵盖了一种燃料混合物，名义上为70%至85%体积的变性燃料乙醇和30%至15%额外体积的碳氢化合物，用于配备汽车火花点火发动机的地面车辆。附录X1讨论了规定特性的重要性。 1.2以国际单位制表示的数值应视为标准。括号中给出的值仅供参考。

1.1 This specification covers a fuel blend, nominally 70 to 85 volume % denatured fuel ethanol and 30 to 15 additional volume % hydrocarbons for use in ground vehicles with automotive spark-ignition engines. Appendix X1 discusses the significance of the properties specified. 1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.