ISO 5165:2020 石油产品 柴油点火质量的测定 十六烷引擎方法
标准编号：ISO 5165:2020
中文名称：石油产品 柴油点火质量的测定 十六烷引擎方法
英文名称：Petroleum products — Determination of the ignition quality of diesel fuels — Cetane engine method
发布日期：2020-07
标准范围
本文件使用标准单缸、四冲程循环、可变压缩比、间接喷射柴油发动机，根据十六烷值（CNs）的任意比例建立了柴油燃料油的等级。CN提供了压燃式发动机中柴油燃料油的点火特性的量度。CN是在预燃烧室型压燃试验发动机中以恒定速度测定的。然而，测试发动机性能与全尺寸、变速和可变负载发动机的关系还没有完全理解。本文件适用于0 CN至100 CN的整个刻度范围，但典型测试范围为30 CN至65 CN。CEN在2013年进行的一项实验室间研究（10个样品，范围为52.4 CN至73.8 CN）[3]证实，来自合成或加氢处理的石蜡柴油，含有高达7%体积分数的脂肪酸甲酯(FAME)，可以通过该测试方法进行测试，并且precision与传统燃料相当。该测试可用于非常规燃料，如合成油或植物油。然而，这些燃料的精度尚未确定，并且与此类材料在全尺寸发动机中的性能的关系尚未完全了解。具有干扰燃油重力流向燃油泵或通过喷油器喷嘴输送的流体特性的样品不适合通过该方法进行评级。注:本文件以SI单位规定了运行条件，但发动机测量以英寸-磅单位或华氏单位规定，因为这些是设备制造中使用的历史单位，因此本文件中的一些参考文献包括括号中的这些和其他非SI单位。
This document establishes the rating of diesel fuel oil in terms of an arbitrary scale of cetane numbers (CNs) using a standard single cylinder, four-stroke cycle, variable compression ratio, indirect injected diesel engine. The CN provides a measure of the ignition characteristics of diesel fuel oil in compression ignition engines. The CN is determined at constant speed in a pre-combustion chamber-type compression ignition test engine. However, the relationship of test engine performance to full scale, variable speed and variable load engines is not completely understood.This document is applicable for the entire scale range from 0 CN to 100 CN but typical testing is in the range of 30 CN to 65 CN. An interlaboratory study executed by CEN in 2013 (10 samples in the range 52,4 CN to 73,8 CN)[3] confirmed that paraffinic diesel from synthesis or hydrotreatment, containing up to a volume fraction of 7 % fatty acid methyl ester (FAME), can be tested by this test method and that the precision is comparable to conventional fuels.This test can be used for unconventional fuels such as synthetics or vegetable oils. However, the precision for those fuels has not been established and the relationship to the performance of such materials in full-scale engines is not completely understood.Samples with fluid properties that interfere with the gravity flow of fuel to the fuel pump or delivery through the injector nozzle are not suitable for rating by this method.NOTE This document specifies operating conditions in SI units but engine measurements are specified in inch-pound units or Fahrenheit because these are the historical units used in the manufacture of the equipment, and thus some references in this document include these and other non-SI units in parenthesis.
标准预览图
