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Study on the effects of intake conditions on the exergy destruction of low temperature combustion engine for a toluene reference fuel

机译：进气条件对甲苯参考燃料低温燃烧发动机的电气破坏的影响研究

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摘要

Low temperature combustion (LTC) is a new mode for efficient and clean combustion in engines, and the process is mainly controlled by chemical reaction kinetics of fuel. In this paper, the numerical model of exergy analysis for LTC engine was established. The temperature, pressure and species concentration were obtained by using the homogeneous charge compression ignition (HCCI) engine model of Chemkin-Pro software with the simplified mechanism of toluene reference fuel (TRF). The exergy items were further calculated to explore the effect of different intake conditions on exergy destruction in LTC process. It was found that the irreversibility related to the combustion proceeding mainly happened in low temperature and high temperature reaction zones. With the increase of exhaust gas recirculation (EGR) rate, the proportion of working exergy increases but the irreversibility destruction of combustion decreases. Besides, N-2 component concentration in EGR gas has the greatest influence on the distribution of exergy.
机译：低温燃烧（LTC）是发动机有效和清洁燃烧的新模式，该过程主要由燃料的化学反应动力学控制。本文建立了LTC发动机的Deergeny分析的数值模型。通过使用Chemkin-Pro软件的均匀电荷压缩点火（HCCI）发动机模型与甲苯参考燃料（TRF）的简化机制来获得温度，压力和物质浓度。进一步计算出驱漏物品以探讨不同进气条件对LTC工艺漏洞破坏的影响。发现与燃烧程序相关的不可逆转性主要发生在低温和高温反应区中。随着废气再循环（EGR）速率的增加，工作驱动的比例增加，但燃烧的不可逆转性破坏降低。此外，EGR气体中的N-2组分浓度对Deertgy的分布产生了最大的影响。

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