Simulation on Performance Matching of Two-Stage Turbocharging System and Common-Rail Fuel System at High Altitudes

被引：0
|
作者：
Zhang Z. [1 ]
Liu R. [1 ]
Zhou G. [1 ]
Liang Z. [1 ]
Dong S. [1 ]
Ma J. [1 ]
机构：
[1] Military Vehicle Engineering Department, Army Military Transportation University, Tianjin
来源：
Neiranji Xuebao/Transactions of CSICE (Chinese Society for Internal Combustion Engines) | 2020年 / 38卷 / 01期
关键词：
Fuel common-rail system; High altitudes; Regulated two-stage turbocharged diesel engine;
D O I：
10.16236/j.cnki.nrjxb.202001007
中图分类号：
学科分类号：
摘要：
Simulation matching of control parameters of turbocharging and fuel injection systems can improve the performance of diesel engine at high altitudes. A simulation matching model of a regulated two-stage turbocharged diesel engine with variable geometry turbocharger(VGT)was established and verified. The model combines with back propagation(BP)neural network to complete optimization of control parameters of the turbocharging and fuel injection systems at various operation conditions and altitudes. The results show excellent engine performance improvements. Compared with the original engine at the altitude of 5.5 km, boost pressure and airflow rate of the optimized engine at low-speeds is increased by 24.2% and 26.9%. The maximum torque, low-speed torque, rated power are increased by 9.1%, 38.9% and 6.7% respectively. The fuel consumption rate and the air-fuel ratio are decreased by 3.7% and 9.7% respectively. The power of diesel engine is improved at low-speed and the maximum combustion pressure is reduced to below its limitation value. © 2020, Editorial Office of the Transaction of CSICE. All right reserved.
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页码：49 / 56
页数：7
相关论文
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