
第40卷(2018)第5期系统与附件
柴油机 Diesel Engine
Vol.40(2018) No.5
基于Flowmaster的船用柴油机冷却系统温控策略研究
曹应佳,李安康,张学艳,霍晓萌",杨景全
(1.七一一研究所,上海201108;2.海军驻七一一研究所军事代表室,上海201108)
摘要:基于Flowmaster仿真平台建立了某船用柴油机冷却系统单点控制和多点控制两种温控策略的仿真模型,以进出机温度系数、流量、杨程(耗功)等为关键项,在相同环境条件下对两种温控策略进行全工况对比分析。分析表明:高温循环采用多点控制方案可适当提高循环水温,改善整机动力性和经济性;低温循环采用单点控制可适当降低循环水温,有利于提高系统换热效率和降低附件选型要求。
关键词:船用柴油机:冷却系统:温控策略;仿真中图分类号:TK424.21
文献标识码:A文章编号:1001-4357(2018)05-0034-05
Study on the Temperature Control Strategy of Marine Diesel Engine Cooling System Based on Flowmaster
Cao Yingjia',Li Ankang",Zhang Xueyan',Huo Xiaomeng',Yang Jingquan
(1. Shanghai Marine Diesel Engine Research Institute, Shanghai 201108 ;
2.Naval Deputy Ofice of SMDERI, Shanghai 201108)
Abstract: The simulation models of single point and multi-point temperature control strategy of a marine diesel engine cooling system were established based on Flowmaster. The key parameters including tem-perature coefficient, flow rate and pump head (consumption) of the machine were selected to compare and analyze the two temperature control strategies under the same environmental conditions. The results show that the dynamic efficiency and economy of the engine can be improved as the circulating tempera-ture is increased properly by the high temperature cycle with multi-control; the system heat transfer effi-ciency can be improved and the accessories selection requirements can be reduced as the circulating tem-perature is reduced properly by the low temperature cycle with single control.
Key words: marine diesel engine; cooling system; temperature control strategy; simulation
0引言
冷却系统是柴油机正常运行的主要保障系统之一,其作用是保证柴油机始终能在合适的温度下正常、可靠地工作。现代柴油机高强化、紧凌化、高热负荷的发展趋势对柴油机冷却系统设计提出了更高的要求。
柴油机冷却系统温度匹配设计是冷却系统设计中的重要一环,与柴油机的可靠性、动力性和经济
性密切相关"。研究表明:柴油机在最佳冷却温度下工作,其输出的功率最大,燃油消耗量最少,废气排放可达到一个相对的平衡状态121
本文以某船用柴油机冷却系统为研究对象,基于Flowmaster仿真平台,开展两种典型温控策略全工况对比分析,研究相同环境条件下两种温控策略温度系数、流量、扬程(耗功)随工况的变化情况:探讨两种温控策略的优劣与适用场合,为柴油机冷却系统温度匹配设计提供依据,
收稿日期:2017-09-19
作者简介:曹应佳(1986-),男,工程师,主要研究方向为案油机润滑与冷却,caoyingjia@esic711.com。