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

关于纳米颗粒在内燃机中的生长，从燃料的着火和燃烧开始，人们对以下几点知之甚少：实际燃料的着火机理，以及与纳米颗粒的前体多芳烃的产生密切相关的不饱和物质的反应机理。假设正庚烷、异辛烷和甲苯的三元混合物为最小替代燃料，作为汽油燃烧模拟的模型燃料。本研究的目的是在文献数据和量子化学计算的基础上，建立发动机环境下汽油代用燃料氧化的详细化学动力学模型。提出的汽油代用燃料模型包含了低温氧化动力学，这在发动机环境下是重要的。并设计研制了高压激波管和定容燃烧室，为模型的验证提供了点火延迟时间等测量数据。

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.