辛烷值数据库

标准燃料由异辛烷和正庚烷的混合物组成。异辛烷用作抗爆性优良的标准，辛烷值定为100;正庚烷用作抗爆性低劣的标准，辛烷值为0。将这两种烃按不同体积比例混合，可配制成辛烷值由0到100的标准燃料。按不同体积比例混合，可配制成辛烷值由0到100的标准燃料。混合物中异辛烷的体积百分数愈高，它的抗爆性能也愈好。在辛烷值试验机中测定试样的辛烷值时，提高压缩比到出现标准爆燃强度为止，然后，保持压缩比不变，选择某一成分的标准燃料在同一试验条件下进行测定，使发动机产生同样强度的爆燃。当确定所取标准燃料如恰好是由70%异辛烷和30%正庚烷组成的，则可评定出此试油的辛烷值等于70。本数据集了燃料中碳氢化合物辛烷值，并提供了在线计算功能模块，用于预测汽油辛烷值。

Standard fuel is composed of a mixture of isooctane and n-heptane. Isooctane acts as the standard for excellent anti-knock performance, with its octane number set at 100; n-heptane acts as the standard for poor anti-knock performance, with an octane number of 0. Mixing these two hydrocarbons in different volume ratios can produce standard fuels with octane numbers ranging from 0 to 100. The higher the volume percentage of isooctane in the mixture, the better its anti-knock performance. When measuring the octane number of a sample in an octane number testing machine, first increase the compression ratio until the standard knock intensity is achieved, then maintain the compression ratio unchanged and select a standard fuel of a specific composition for testing under the same experimental conditions to generate knock of the same intensity in the engine. If the identified standard fuel is exactly composed of 70% isooctane and 30% n-heptane, the octane number of the tested oil can be rated as 70. This dataset provides the octane number data of hydrocarbons in fuels, and includes an online calculation module for predicting gasoline octane numbers.

搜集汇总

背景与挑战

背景概述

辛烷值数据库由中国科学院过程工程研究所创建，包含1.8万条记录，数据量为4MB，提供了燃料中碳氢化合物辛烷值的数据及在线计算功能模块，用于预测汽油辛烷值。数据集详细描述了辛烷值的测定方法和标准燃料的组成。