重型柴油机冷却风扇和水泵的功率分配对热管理系统总能耗的影响  

Influence of Power Distribution of Fan and Pump on the Total Power Consumption of Thermal Management System in Heavy-Diesel Engine

作　　者：谢辉[1] 康娜[1] 

机构地区：[1]天津大学内燃机燃烧学国家重点实验室,天津300072

出　　处：《天津大学学报（自然科学与工程技术版）》2015年第3期225-233,共9页Journal of Tianjin University：Science and Technology

基　　金：国家重点基础研究计划(973计划)资助项目(2011CB707206)

摘　　要：针对一款重型卡车用柴油机，在GT-SUITE平台上系统研究了电动风扇和电动水泵功率分配对热管理系统运行总能耗的影响规律，提出了风扇和水泵功率分配控制策略.为了减少水温控制的波动，降低系统控制能耗，提出采用一种基于主动扰动观测的控制算法．通过稳态工况和 HUDDS 循环工况的仿真，验证了该算法降低能耗的效果．结果表明：稳态工况下风扇和水泵功率分配的不同可造成2%～56%的总能耗差异．HUDDS 工况下，通过风扇和水泵的功率分配控制，总能耗可节能约8%．相对于PID水温控制，采用主动抗扰控制算法可节约附件总能耗5%左右，出口水温和进出口温差的控制精度可分别改善24%和40%.Based on a heavy diesel engine,the influence of power distribution of fan and pump on the total power consumption of thermal management system had been studied on GT-SUITE platform. In addition,corresponding control strategy of fan and pump power distribution had been proposed. In order to decrease the variation of water temperature and power consumption,a dual loop optimization strategy optimized control,active disturbance rejec-tion control（ODRC） had been presented. The effect of this strategy in reducing the power had also been validated under steady and HUDDS driving cycles. The result has shown that different power distributions of fan and pump can lead to 2%—56% variation in total power consumption. Under HUDDS driving cycle,8% total power consumption can also be saved. Compared with PID,ODRC can get additional 5% of reduction in total power consumption. The accuracy of engine outlet and the deviation between engine ontlet and inlet temperature control can improve 24%and 40% respectively.

关 键 词：热管理系统一维建模 风扇和水泵功率分配 主动抗扰控制算法 附件总能耗复合优化策略 

分 类 号：TK422[动力工程及工程热物理—动力机械及工程]