压气机性能变化对发动机瞬态性能的影响
|
摘要
基于某1.5 L涡轮增压汽油机,研究了压气机特性参数对发动机低速低负荷瞬态性能的影响。在GT-Power中建立稳态仿真模型并验证,进而构建瞬态仿真模型。采用定转速增转矩的方式进行发动机瞬态性能研究,并建立三种瞬态响应指标用于分析。通过改变压气机特性参数中高效率区在高低压比、大小流量范围内的分布并分析瞬态性能评价指标,可知高效率区处在高压比范围时瞬态性能得到优化;当在该范围内改变比例为20%时,瞬态响应变快68%。研究结果表明,压气机高效率区在高低压比、大小流量范围内的不同分布有助于改善发动机瞬态性能。
Based on a 1.5 L turbocharged gasoline engine, the effects of compressor characteristic parameters on engine transient performance at low speed and low load was studied. A steady-state simulation model was established and verified in GT-Power and then a transient simulation model was constructed. The engine transient performance was studied using a constant speed and increase of torque method and three transient response indicators were established for analysis. By changing the distribution of compressor high-efficiency zone in the high-low pressure ratio range and large-small flow range and analyzing the transient performance evaluation index, the transient performance was optimized when the high-efficiency zone lied in the high-pressure ratio range. The transient response accelerated by 68% when the ratio changed as 20% within this range. The results show that different distributions of compressor high-efficiency zone in the high-low pressure ratio range and large-small flow range can improve the transient performance of engine.
Based on a 1.5 L turbocharged gasoline engine, the effects of compressor characteristic parameters on engine transient performance at low speed and low load was studied. A steady-state simulation model was established and verified in GT-Power and then a transient simulation model was constructed. The engine transient performance was studied using a constant speed and increase of torque method and three transient response indicators were established for analysis. By changing the distribution of compressor high-efficiency zone in the high-low pressure ratio range and large-small flow range and analyzing the transient performance evaluation index, the transient performance was optimized when the high-efficiency zone lied in the high-pressure ratio range. The transient response accelerated by 68% when the ratio changed as 20% within this range. The results show that different distributions of compressor high-efficiency zone in the high-low pressure ratio range and large-small flow range can improve the transient performance of engine.
引文
[1]严勇.车用增压汽油机增压器配置及应用性能优化[D].上海:同济大学,2014.
[2]李薛.汽油机瞬态工况空燃比控制策略仿真研究[D].长沙:长沙理工大学,2010.
[3]张雨.基于符号树Shannon熵的汽油机瞬态排放分析[J].长沙理工大学学报(自然科学版),2004,1(1):20-26.
[4]JiˇríNavrátil,Jan Macek,Miloˇs Poláˇsek.Simulation of a Small Turbocharged Gasoline Engine in Transient Operation[C].SAE Paper 2004-01-0995.
[5]Alain Lefebvre,Stéphane Guilain.Modelling and Measurement of the Transient Response of a Turbocharged SI Engine[C].SAE Paper 2005-01-0691.
[6]Cheng Tan,Hongming Xu,He Ma,et al.A Study of Methodology for the Investigation of Engine Transient Performance[C].SAE Paper 2014-01-2714.
[7]Cheng Tan,Hongming Xu,He Ma,et al.Investigation of VVT and spark timing on combustion and particle emission from a GDI Engine during transient operation[C].SAE Paper 2014-01-1370.
[8]Andreas A Malikopoulos,Dennis N Assanis,Panos YPapalambros.Real-Time Self-Learning Optimization of Diesel Engine Calibration[J].Journal of Engineering for Gas Turbines and Power,2009,131:1-7.
[9]陈涛.内燃机增压离心压气机多工况通流设计方法研究[D].北京:清华大学,2010.
[10]张泽.增压器废气旁通阀对增压汽油机瞬态响应特性的影响研究[D].上海:同济大学,2016.
[11]段树林,欧阳明高,刘峥,等.一个用于涡轮增压柴油机动态仿真的简化模型[C]//中国内燃机学会学术年会.[出版地不详]:[出版者不详],1999.
[12]魏桃李,孙培廷,黄连中.涡轮增压柴油机瞬态特性的改善[J].世界海运,2002(1):54-56.
[13]杜常清.汽车动力装置动态试验台建设与应用研究[D].武汉:武汉理工大学,2006.
[14]Thomas Morel,Rifat Keribar,Andy Leonard.“Virtual Engine/Powertrain/Vehicle”Simulation Tool Solves Complex Interacting System Issues[C].SAE Paper 2003-01-0372.
[2]李薛.汽油机瞬态工况空燃比控制策略仿真研究[D].长沙:长沙理工大学,2010.
[3]张雨.基于符号树Shannon熵的汽油机瞬态排放分析[J].长沙理工大学学报(自然科学版),2004,1(1):20-26.
[4]JiˇríNavrátil,Jan Macek,Miloˇs Poláˇsek.Simulation of a Small Turbocharged Gasoline Engine in Transient Operation[C].SAE Paper 2004-01-0995.
[5]Alain Lefebvre,Stéphane Guilain.Modelling and Measurement of the Transient Response of a Turbocharged SI Engine[C].SAE Paper 2005-01-0691.
[6]Cheng Tan,Hongming Xu,He Ma,et al.A Study of Methodology for the Investigation of Engine Transient Performance[C].SAE Paper 2014-01-2714.
[7]Cheng Tan,Hongming Xu,He Ma,et al.Investigation of VVT and spark timing on combustion and particle emission from a GDI Engine during transient operation[C].SAE Paper 2014-01-1370.
[8]Andreas A Malikopoulos,Dennis N Assanis,Panos YPapalambros.Real-Time Self-Learning Optimization of Diesel Engine Calibration[J].Journal of Engineering for Gas Turbines and Power,2009,131:1-7.
[9]陈涛.内燃机增压离心压气机多工况通流设计方法研究[D].北京:清华大学,2010.
[10]张泽.增压器废气旁通阀对增压汽油机瞬态响应特性的影响研究[D].上海:同济大学,2016.
[11]段树林,欧阳明高,刘峥,等.一个用于涡轮增压柴油机动态仿真的简化模型[C]//中国内燃机学会学术年会.[出版地不详]:[出版者不详],1999.
[12]魏桃李,孙培廷,黄连中.涡轮增压柴油机瞬态特性的改善[J].世界海运,2002(1):54-56.
[13]杜常清.汽车动力装置动态试验台建设与应用研究[D].武汉:武汉理工大学,2006.
[14]Thomas Morel,Rifat Keribar,Andy Leonard.“Virtual Engine/Powertrain/Vehicle”Simulation Tool Solves Complex Interacting System Issues[C].SAE Paper 2003-01-0372.