A Study on the Formation of PAHs in the Internal Combustion Engine

内燃机中纳米颗粒的生长是从燃料的点火和燃烧开始的，但对真实的燃料的点火机理和与纳米颗粒前体多环芳烃的生成密切相关的不饱和物种的反应机理知之甚少。正庚烷、异辛烷和甲苯的三元混合物被假定为最小替代燃料，这是用于汽油燃烧模拟的模型燃料。本研究的目的是建立汽油替代燃料在发动机环境下氧化的详细化学动力学模型，该模型是基于文献数据和量子化学计算构建的。建议的汽油替代燃料模型包括低温氧化动力学，这是重要的发动机环境下。并设计了高压激波管和定容室，获得了点火延迟时间等实验数据，为模型的验证提供了实验依据。

On the growth of nano-particles in the internal combustion engines starting from the ignition and combustion of fuels, following points were little known; the ignition mechanism of real fuels, and the reaction mechanism of unsaturated species which strongly related to the production of poly aromatic hydrocarbons, the precursor of the nano-particle. The ternary mixture of n-heptane, iso-octane, and toluene is assumed to be a minimum surrogate fuel, which is a model fuel for the combustion simulation of gasoline. The goal of this study is the development of the detailed chemical kinetic model for the oxidation of gasoline surrogate fuels under the engine environment.The model was constructed based on the literature data and the quantum chemical calculations. The proposed gasoline surrogate fuel model includes low temperature oxidation kinetics, which is important under the engine environment. And, to obtain the measurement data such as ignition delay times for the validation of the model, high-pressure shock tube and constant volume chamber were designed and developed.