一、前言传统的辛烷值分析是在化验室离线进行的。分析装置是一台体积庞大的特殊发动机,具有可变压缩比和爆震强度检测器。工艺试样采来后,估计试样的辛烷值数,用正庚烷(定义其辛烷值为零)和异辛烷(定义其辛烷值为100)配制相应的标准样,送入发动机。发动机运行时,连续改变压缩比, I. Preface The traditional octane analysis is done offline in the laboratory. The analyzer is a bulky special engine with a variable compression ratio and knock strength detector. After the process sample is taken, the octane number of the sample is estimated and the corresponding standard is prepared using n-heptane (which defines its octane number as zero) and isooctane (whose octane number is defined as 100) engine. When the engine is running, the compression ratio is continuously changed