ANSI/ASTM D976-2006 馏分燃料正十六烷指数计算的试验方法
【英文标准名称】: Test Method for Calculated Cetane Index of Distillate Fuels 【原文标准名称】: 馏分燃料正十六烷指数计算的试验方法 【标准号】: ANSI/ASTM D976-2006 【标准状态】: 作废 【国别】: 美国 【发布日期】: 2006 【实施或试行日期】: 【发布单位】: 美国国家标准学会(US-ANSI)【起草单位】: ANSI【标准类型】: ()【标准水平】: ()【中文主题词】: 机动车燃料;馏分燃料;燃料;液体燃料;石油产品;正十六烷;目录;试验【英文主题词】: Automotive fuels;Cetane;Distillates;Fuels;Indices;Liquid fuels;Petroleum products;Testing【摘要】: This test method covers the Calculated Cetane Index formula, which represents a means for directly estimating the ASTM cetane number of distillate fuels from API gravity and mid-boiling point. The index value, as computed from the formula, is termed the Calculated Cetane Index. The Calculated Cetane Index is not an optional method for expressing ASTM cetane number. It is a supplementary tool to estimate cetane number when used with due regard for its limitations. The Calculated Cetane Index formula is particularly applicable to straight-run fuels, catalytically cracked stocks, and blends of the two. Note 1This test method is temporarily retained because the proposal to the U.S. EPA to control diesel fuel aromatics concentrations via a 40 Calculated Cetane Index minimum is based on the correlation between Test Method D 976 and aromatics concentration. Test Method D 4737 is the preferred method as estimator of cetane number. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.【中国标准分类号】: E31【国际标准分类号】: 75_160_20【页数】: 【正文语种】: 英语
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