基于高空气流特性的转子发动机进气系统建模与仿真
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摘要
针对转子发动机进气量难以直接测量的问题,基于某型转子发动机进气系统特点分析,考虑高空气流特性对进气量的影响,建立了转子发动机进气系统均值模型,通过Matlab/Simulink仿真软件仿真得到不同海拔高度下的进气量脉谱图。仿真结果与试验数据对比分析表明:发动机进气流量及进气管压强的仿真结果与试验数据基本吻合;在节气门开度较大时,节气门开度的变化对进气流量的影响逐渐减弱;所建转子发动机进气模型精度高,可用于转子发动机进气量的仿真计算。
Aiming at the problem that the intake airflow of rotary engine was difficult to be measured directly,a mean value model of the rotary engine intake system was established based on the analysis of the characteristics of the rotor engine intake system and considering the effect of the characteristics of high airflow on the intake airflow. The pulse patterns of intake airflow at different altitude were obtained by Matlab/Simulink simulation software. The comparison and analysis between the simulation results and the experimental data show that the simulation results of the intake airflow and pressure of the engine are in good agreement with the experimental data. When the throttle opening is large, the effect of throttle opening on intake airflow gradually weakens. The model has high accuracy and can be used to simulate the intake airflow of rotary engine.
Aiming at the problem that the intake airflow of rotary engine was difficult to be measured directly,a mean value model of the rotary engine intake system was established based on the analysis of the characteristics of the rotor engine intake system and considering the effect of the characteristics of high airflow on the intake airflow. The pulse patterns of intake airflow at different altitude were obtained by Matlab/Simulink simulation software. The comparison and analysis between the simulation results and the experimental data show that the simulation results of the intake airflow and pressure of the engine are in good agreement with the experimental data. When the throttle opening is large, the effect of throttle opening on intake airflow gradually weakens. The model has high accuracy and can be used to simulate the intake airflow of rotary engine.
引文
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[15]周栋,苏铁熊,李闯,等.基于发动机平均值模型的进气歧管模型仿真精度分析研究[J].科学技术与工程,2016,16(32):238-242.ZHOU Dong,SU Tiexiong,LI Chuang,et al.The research of the engine intake manifold model’s simulation accuracy based on the mean value engine model[J].Science Technology and Engineering,2016,16(32):238-242.(in Chinese)
[2]卢法,余乃彪.三角转子发动机[M].北京:国防工业出版社,1990:9-10.LU Fa,YU Naibiao.Triangle rotary engine[M].Beijing:National Defense Industry Press,1990:9-10.(in Chinese)
[3]周乃君,裴海灵,张家奇.转子发动机热力过程数学模型[J].中南大学学报(自然科学版),2008,39(2):284-289.ZHOU Naijun,PEI Hailing,ZHANG Jiaqi.Mathematic models for thermodynamic process of rotary combustion engine[J].Journal of Central.South University(Science and Technology),2008,39(2):284-289.(in Chinese)
[4]康佳.膜片式化油器结构及工作原理[J].内燃机,2007(1):37-38,43.KANG Jia.Diaphragm carburetor’s structure and working principle presentation[J].Internal Combustion Engines,2007(1):37-38,43.(in Chinese)
[5]汤廷孝,赵后良,陈怀海.三角转子发动机汽油喷射系统的试验研究[J].内燃机,2010(1):29-33.TANG Tingxiao,ZHAO Houliang,CHEN Huaihai.Experimental research to gasoline injection system in triangle rotor engine[J].Internal Combustion Engines,2010(1):29-33.(in Chinese)
[6]杨晨霞.电控燃油喷射系统的研究[D].天津:河北工业大学,2013.YANG Chenxia.Research on electronic fuel injection system[D].Tianjin:Hebei University of Technology,2013.(in Chinese)
[7]陈林林,魏民祥,杨海青.基于均值模型的煤油发动机喷油控制策略[J].电子科技大学学报,2015,44(6):869-875.CHEN Linlin,WEI Minxiang,YANG Haiqing.Research on fuel injection control strategy of the miniature kerosene aero-engine based on mean value model[J].Journal of University of Electronic Science and Technology,2015,44(6):869-875.(in Chinese)
[8]Hendricks E,Sorenson S C.Mean value modeling of spark ignition engine[R].SAE-1990-900616.
[9]Hendricks E,Chevalier A,Jensen M,et al.Modeling of the intake manifold filing dynamics[R].SAE-1996-960027.
[10]Abu-Nada E,Al-Hinti I,Al-Sarkhi A,et al.Thermodynamic modeling of spark-ignition engine:Effect of temperature dependent specific heats[J].International Communications in Heat and Mass Transfer,2006,33(10):1264-1272.
[11]Shamekhi A M,Shamekhi A H.A new approach in improvement of mean value models for spark ignition engines using neural networks[M].London:Pergamon Press,2015:56-68.
[12]陈林林,魏民祥,杨海青.航空二冲程汽油发动机均值模型的试验与仿真[J].航空动力学报,2008,23(12):2249-2255.CHEN Linlin,WEI Minxiang,YANG Haiqing.Experiment and simulation of the mean value model on two-stroke gasoline aero-engine[J].Journal of Aerospace Power,2008,23(12):2249-2255.(in Chinese)
[13]吴锋,胡金龙,邹博文.电喷汽油机进气管空气动态模型的仿真与试验研究[J].内燃机工程,2006,27(5):25-28.WU Feng,HU Jinlong,ZOU Bowen.Simulation and experimental study of EFI gasoline engine’s manifold filling dynamic model[J].Chinese Internal Combustion Engine Engineering,2006,27(5):25-28.(in Chinese)
[14]汤廷孝,赵后良,陈怀海.无人机用三角转子发动机进气流量测量模型[J].航空动力学报,2010,25(11):2425-2430.TANG Tingxiao,ZHAO Houliang,CHEN Huaihai.Test model of intake air amount on rotary engine of unmanned aerial vehicle[J].Journal of Aerospace Power,2010,25(11):2425-2430.(in Chinese)
[15]周栋,苏铁熊,李闯,等.基于发动机平均值模型的进气歧管模型仿真精度分析研究[J].科学技术与工程,2016,16(32):238-242.ZHOU Dong,SU Tiexiong,LI Chuang,et al.The research of the engine intake manifold model’s simulation accuracy based on the mean value engine model[J].Science Technology and Engineering,2016,16(32):238-242.(in Chinese)