涡轮增压柴油机仿真模型修正方法及试验比较研究
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摘要
基于AVL BOOST仿真软件,针对一台4缸涡轮增压柴油机进行建模,在原仿真模型的基础上着重考虑了涡轮增压器传热效应的影响。计算结果与发动机试验数据的比较分析表明:经过修正的发动机仿真模型在保证发动机扭矩、功率等主要性能参数不变的基础上,计算得到的涡轮及压气机进出口温差与原模型相比误差大幅度减小;同时修正后的仿真模型与原模型相比,新鲜空气的质量流量、涡轮膨胀比、压气机压比均无明显变化,表明修正后的模型并无改变涡轮增压器的工作点位置,仅修正了由于传热所导致的压气机出口和涡轮进口的温度变化,以及涡轮增压器的效率变化。
Based on the simulation software of AVL BOOST,a four-cylinder turbocharging diesel engine simulation model was established,the effect of the turbocharger's heat transfer was considered in the simulation model. The calculation results were compared with experimental results,and showed that compared with the original model,the corrected model could substantially decrease the error of temperature difference between inlet and outlet of turbine and compressor,in the premise of keeping the main parameters including torque and power unchanged; it also showed that the mass flow rate of engine fresh air and the pressure ratio of turbine and compressor was not change,which meant that the corrected modal didn't change the turbocharger operating positions,but only corrected the temperature change of the compressor outlet temperature and turbine inlet and the efficiency change of turbocharger caused by heat transfer.
Based on the simulation software of AVL BOOST,a four-cylinder turbocharging diesel engine simulation model was established,the effect of the turbocharger's heat transfer was considered in the simulation model. The calculation results were compared with experimental results,and showed that compared with the original model,the corrected model could substantially decrease the error of temperature difference between inlet and outlet of turbine and compressor,in the premise of keeping the main parameters including torque and power unchanged; it also showed that the mass flow rate of engine fresh air and the pressure ratio of turbine and compressor was not change,which meant that the corrected modal didn't change the turbocharger operating positions,but only corrected the temperature change of the compressor outlet temperature and turbine inlet and the efficiency change of turbocharger caused by heat transfer.
引文
[1]张扬军,张树勇,徐建中.内燃机流动热力学与涡轮增压技术研究[J].内燃机学报,2008,21(6):91-95.
[2]刘系暠,魏名山,马朝臣,等.不同海拔高度下单级和二级增压柴油机的仿真[J].内燃机学报,2010,28(5):447-452.
[3]罗海鹏,刘敬平,唐琦军,等.汽油机两级增压系统的匹配与性能研究[J].内燃机工程,2016,37(1):123-129
[4] SHAABAN S. Experimental investigation and extended simulation of turbocharger non-adiabatic performance[D]. Hannover:Hannover University,2004.
[5] BELMONTE M A R. Contribution to the experimental Characterization and 1-D modeling of turbochargers for IC Engines[D]. Valencia:Valencia University,2013.
[6] AGHAALI H,HANS-ERIK A,SERRANO J R,et al.Evaluation of different heat transfer conditions on an automotive turbocharger[J]. Engine Research,2015,16(2):137-151.
[7] ROMAGNOLI A,BTAS R M. Heat transfer analysis in a turbocharger turbine:An experimental and computational evaluation[J]. Applied Thermal Engineering,2012,38:58-77.
[8] SERRANO J,OLMEDA P,ARNAU F,et al. Importance of heat transfer phenomena in small turbochargers for passenger car applications[C] SAE Paper. Detroit,Michigan,USA,2013,2013-01-0576.
[9] BAINES N,WYGANT K D,DRIS A. The analysis of heat transfer in automotive turbochargers[J]. Journal of Engineering for Gas Turbines and Power, 2010, 132(4):042301-1-042301-8.
[10] SERRANO J R,OLMEDA P,ARNAU F J,et al. A study on the internal convection in small turbochargers.Proposal of heat transfer convective coefficients[J]. Applied Thermal Engineering,2015,89:587-599.
[11] PAYRI F,OLMEDA P,ARNAU F J,et al. External heat losses in small turbochargers:model and experiments[J]. Energy,2014,71:534-546.
[12] SERRANO J R,OLMEDA P,TISEIRA A,et al. Theoretical and experimental study of mechanical losses in automotive turbochargers[J]. Energy,2013,55:888-898.
[13] ANDRE L S,KERTH J. Thermal effects on the performance of floating ring bearings for turbochargers[J]. Engineering Tribology,2004,218:437-450.
[14] OLMEDA P,DOLZ V,ARNAU F J,et al. Determination of heat flows inside turbochargers by means of a one dimensional lumped model[J]. Mathematical and Computer Modelling,2013,55:1847-1852.
[15] SERRANO J R,OLMEDA P,TISEIRA A,et al. Theoretical and experimental study of mechanical losses in automotive turbochargers[J]. Energy,2013,55:888-898.
[16] SERRANO J R,OLMEDA P,ARNAU F J,et al. Turbocharger heat transfer and mechanical losses influence in predicting engines performance by using one-dimensional simulation codes[J]. Energy,2015,86:204-218.
[2]刘系暠,魏名山,马朝臣,等.不同海拔高度下单级和二级增压柴油机的仿真[J].内燃机学报,2010,28(5):447-452.
[3]罗海鹏,刘敬平,唐琦军,等.汽油机两级增压系统的匹配与性能研究[J].内燃机工程,2016,37(1):123-129
[4] SHAABAN S. Experimental investigation and extended simulation of turbocharger non-adiabatic performance[D]. Hannover:Hannover University,2004.
[5] BELMONTE M A R. Contribution to the experimental Characterization and 1-D modeling of turbochargers for IC Engines[D]. Valencia:Valencia University,2013.
[6] AGHAALI H,HANS-ERIK A,SERRANO J R,et al.Evaluation of different heat transfer conditions on an automotive turbocharger[J]. Engine Research,2015,16(2):137-151.
[7] ROMAGNOLI A,BTAS R M. Heat transfer analysis in a turbocharger turbine:An experimental and computational evaluation[J]. Applied Thermal Engineering,2012,38:58-77.
[8] SERRANO J,OLMEDA P,ARNAU F,et al. Importance of heat transfer phenomena in small turbochargers for passenger car applications[C] SAE Paper. Detroit,Michigan,USA,2013,2013-01-0576.
[9] BAINES N,WYGANT K D,DRIS A. The analysis of heat transfer in automotive turbochargers[J]. Journal of Engineering for Gas Turbines and Power, 2010, 132(4):042301-1-042301-8.
[10] SERRANO J R,OLMEDA P,ARNAU F J,et al. A study on the internal convection in small turbochargers.Proposal of heat transfer convective coefficients[J]. Applied Thermal Engineering,2015,89:587-599.
[11] PAYRI F,OLMEDA P,ARNAU F J,et al. External heat losses in small turbochargers:model and experiments[J]. Energy,2014,71:534-546.
[12] SERRANO J R,OLMEDA P,TISEIRA A,et al. Theoretical and experimental study of mechanical losses in automotive turbochargers[J]. Energy,2013,55:888-898.
[13] ANDRE L S,KERTH J. Thermal effects on the performance of floating ring bearings for turbochargers[J]. Engineering Tribology,2004,218:437-450.
[14] OLMEDA P,DOLZ V,ARNAU F J,et al. Determination of heat flows inside turbochargers by means of a one dimensional lumped model[J]. Mathematical and Computer Modelling,2013,55:1847-1852.
[15] SERRANO J R,OLMEDA P,TISEIRA A,et al. Theoretical and experimental study of mechanical losses in automotive turbochargers[J]. Energy,2013,55:888-898.
[16] SERRANO J R,OLMEDA P,ARNAU F J,et al. Turbocharger heat transfer and mechanical losses influence in predicting engines performance by using one-dimensional simulation codes[J]. Energy,2015,86:204-218.