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为减少汽车尾气对环境的污染,国内外正在逐步颁发和实施严格的汽油、柴油标准。我国新颁布的汽油标准规定,硫含量不大于2.5％,芳烃含量不大于40％,烯烃含量不大于35％。轻柴油的新标准将实行一个等级,硫含量为0.2％,氧化安定性不大于2.5mg/100ml,十六烷值为40。由于构成上的差别,我国燃油的硫含量和烯烃含量与国外相比还有很大差距。
In order to reduce the pollution of automobile exhaust on the environment, strict gasoline and diesel standards are being promulgated and implemented at home and abroad. China’s newly promulgated gasoline standards, the sulfur content of not more than 2.5%, aromatics content of not more than 40%, olefin content of not more than 35%. The new standard for light diesel oil will be a grade with a sulfur content of 0.2%, an oxidation stability of not more than 2.5 mg / 100 ml and a cetane number of 40. Due to the differences in composition, the sulfur content and olefin content of China’s fuel oil still have a long way to go abroad.