摘要
针对船用低速柴油机各缸和各循环间燃烧不平衡性问题,以6EX340EF型船用低速柴油机为研究对象,使用AVL Cruise M软件开发了具有各缸和各循环间的压力波动功能且满足准确性和实时性要求的仿真模型;结合NI CompactRIO硬件和NI LabVIEW软件,开发了缸压闭环控制快速原型,通过位置管理模块和缸压采集分析处理模块,从缸压数据中提取平均指示压力和50%燃烧放热量相位作为反馈变量,以喷油正时和喷油脉宽为控制变量,对缸压进行闭环控制;集成实时仿真模型、硬件在环仿真系统和快速控制原型,构成闭环系统。试验验证表明:开发的缸压闭环控制策略能够使燃烧特性参数波动减少50%左右,对各缸和各循环间的燃烧不平衡性均有改善效果。
Taking a 6EX340EF low-speed marine diesel engine as the research object,the issue of the combustion imbalance between the cylinders and working cycles of low-speed marine diesel engines was studied using the in-cylinder pressure feedback control technology.A simulation model with pressure fluctuations between the cylinders and working cycles was developed using the AVL Cruise M software to meet accuracy and real-time requirements,and a rapid control prototype was also developed based on the NI CompactRIO hardware and NI LabVIEW software.The closed-loop adjustment of the in-cylinder pressure was accomplished by using combustion characteristic parameters as feedback variables,such as indicated mean effective pressure and 50% combustion heat release phase extracted from the pressure in cylinder through position management module and cylinder pressure acquisition analysis processing module,and injection timing and injection pulse width as control variables.Then the real-time simulation model,hardware-in-loop simulation system and control prototype were integrated to form a closed-loop system.The test results show that the proposed in-cylinder pressure feedback control strategy can reduce the pressure fluctuation by about 50%,and it has an improvement effect on the reduction of the combustion imbalance between the cylinders and working cycles.
作者
余永华
沈叶磊
王勤鹏
杨建国
YU Yonghua;SHEN Yelei;WANG Qinpeng;YANG Jianguo(School of Energy and Power Engineering,Wuhan University of Technology,Wuhan 430063,China;Key Laboratory of Marine Power Engineering and Technology Granted by MOT,Wuhan University of Technology,Wuhan 430063,China;National Engineering Laboratory of Ship and Marine Engineering Power Systems,Wuhan University of Technology,Wuhan 430063,China)
出处
《内燃机工程》
EI
CAS
CSCD
北大核心
2019年第5期86-92,共7页
Chinese Internal Combustion Engine Engineering
基金
船用低速机工程(一期)研制项目(船工科[2015]510号)
设备运行与维护智能系统开发项目(工信部联装函[2016]544号)~~
关键词
船用低速柴油机
缸压闭环控制
实时仿真模型
硬件在环仿真
marine low-speed diesel engine
in-cylinder pressure feedback control
real-time simulation model
hardware-in-loop simulation
