摘要
为改善涡轮迟滞问题,提升柴油机变海拔瞬态响应特性,实现二级增压柴油机变海拔增压压力自适应控制,采用GT-POWER软件双VGT二级可调增压柴油机变海拔稳态和瞬态工作过程模型,利用实验数据对模型进行校核,设计高、低压级VGT叶片开度控制流程和变海拔全工况双VGT二级增压系统控制策略。基于柴油机瞬态仿真模型,研究高、低压级VGT叶片开度调节特性对柴油机高原增压压力影响规律,并提出恒载加速工况高、低压级VGT叶片协同控制策略。结果表明:高、低压级VGT均采用线性增加路径对应增压压力响应时间最短。
In order to improve the problem of turbine hysteresis,improve the transient response characteristics of diesel engine with variable altitude,and realize the adaptive control of turbocharging pressure of two-stage turbocharged diesel engine at variable altitudes,the GT-POWER software dual VGT two-stage adjustable turbocharged diesel engine variable altitude steady-state and transient working process models are firstly adopted in this paper,and the model is verified by using the test data.Then,the control flow of high and low pressure VGT blade opening and the control strategy of dual VGT two-stage turbocharged system under variable altitude all operating conditions are designed.Finally,the influence of the opening adjustment characteristics of high and low pressure VGT blades on the plateau turbocharging pressure of diesel engine is studied based on the transient simulation model of diesel engine,and the coordinated control strategy of high and low pressure VGT blades under constant load acceleration condition is proposed.The results show that the response time of turbocharging pressure is the shortest for both high and low pressure VGT with linear increasing path.
作者
刘瑞林
张众杰
董素荣
周广猛
刘增勇
赵旭敏
LIU Ruilin;ZHANG Zhongjie;DONG Surong;ZHOU Guangmeng;LIU Zengyong;ZHAO Xumin(Army Military Transportation University,Tianjin 300161,China)
出处
《军事交通学报》
2022年第8期11-16,共6页
Journal of Military Transportation University
基金
装备综合研究项目
关键词
柴油机
双VGT二级增压系统
增压压力
变海拔
控制策略
diesel engine
dual VGT two-stage turbocharging system
boost pressure
variable altitude
control strategy
