Combustion raction modeling by using new homogenious compression reactor

采用快速压缩膨胀反应器（RCER）实验系统，研究了内燃机燃烧时的化学反应机理。这个反应堆的化学条件几乎是均匀的，因为燃料事先与空气混合了。在不同的庚烷与异辛烷或甲苯的混合比例下，得到了反应釜内压力的时间曲线。在相同的实验条件下进行了化学反应模拟，并对模拟结果进行了比较。在这种情况下，异辛烷和甲苯都延缓了自燃延迟时间。然而，模拟结果不足以再现甲苯的抑制效果，因此，本研究中使用的反应模型有待改进。

The chemical reaction mechanism under combustion of an internal-combustion engine was examined by using new experimental system, named as Rapid Compression-Expansion Reactor (RCER). The chemical condition in this reactor was almost homogeneous because the fuel was mixed with air in advance.Time profiles of pressure in the reactor were obtained for various mix ratio of heptane and isooctane or toluene. Chemical reaction simulation was also examined under the same condition of the experiments, and the results ware compared each other. In this case, both of isooctane and toluene retarded the self-ignition delay time. However, the results of simulation was not sufficient to reproduce the suppression effect of toluene, so that the reaction model used in this study should be improved.