本文构建了一个适用于HCCI燃烧的PRF化学反应动力学骨架机理。该机理包含40种组分和65个反应。通过与激波管、喷射搅拌反应器、流动反应器和HCCI发动机的实验数据对比表明,新机理适用于多种反应器,可以较准确地计算着火点及关键组分的演变规律,并且在不同的温度、压力和当量比下具有较好的性能。在HCCI发动机的单区模型计算中,对于燃料PRF 91.8和PRF 70,骨架机理计算结果与Curran等人的详细机理计算结果基本相同。
A skeletal chemical kinetic model of PRF for HCCI combustion is developed.The new model consists of 40 species and 65 reactions.By validating against experimental data from shock tube, jet-stirred reactor,flow reactor and HCCI engine at various temperatures,pressures and equivalence ratios,it is demonstrated that the skeletal model can predict satisfactorily ignition time and evolution of important species.The calculated cylinder pressure profiles by this mechanism coupling with a single-zone model of HCCI engine are almost identical with that by the detailed model of Curran et al.
参考文献
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