基于相似因子分析法的均质预混压燃内燃机着火特性分析  

Application of Similarity Factor Analysis in HCCI Engine

作　　者：范玮卫 徐珂 白云天 FAN Weiwei;XU Ke;BAI Yuntian(College of Vehicle and Transportation Engineering,Henan Institute of Technology,Xinxiang 453003,China)

机构地区：[1]河南工学院车辆与交通工程学院,河南新乡453003

出　　处：《河南工学院学报》2021年第3期42-49,共8页Journal of Henan Institute of Technology

基　　金：河南省重点研发与推广专项(科技攻关)项目(212102311151,202102210084);河南工学院高层次人才启动基金项目(KQ1832)。

摘　　要：尝试将相似因子分析法应用于分析燃料在均质预混压燃内燃机内的着火特性。首先借助PRF机理对内燃机内燃料着火特性进行了模拟分析。然后利用相似因子分析法,对影响均质预混压燃着火过程的边界条件进行了模拟分析。最终认为只有在高相似因子工况下得到验证的化学反应动力学机理才能更好预测实际内燃机中的燃料着火特性。而这一工况往往趋向于激波管验证着火延迟的负温度系数(NTC)条件,且敏感性系数受当量比和压力的影响低于温度影响。In this study,the similarity factor analysis method is applied to analyze the ignition characteristics of HCCI engine.The ignition characteristics of internal combustion engine fuel were simulated and analyzed by using the selected PRF mechanism.The influence of the premixed condition on the ignition process is analyzed by using the similarity factor analysis method.It is considered that only the chemical reaction kinetic mechanism verified under the condition of high similarity factor can better predict the actual ignition characteristics of internal combustion engine.This condition tends to be the negative temperature coefficient(NTC)condition for shock tube to verify ignition delay,and the sensitivity to equivalence ratio and pressure is lower than that of temperature.

关 键 词：均质预混压燃内燃机 激波管 相似因子分析 化学反应动力学机理 

分 类 号：TK407.9[动力工程及工程热物理—动力机械及工程]