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J. Hefei Univ. Tech. (Nat. Sci.)

合肥工业大学学报(自然科学版)

JOURNAL OF HEFEI UNIVERSITY OF TECHNOLOGY (NATURAL SCIENCE)

Competent Authorities: Ministry of Education of the People's Republic of China

Sponsor by: Hefei University of Technology

ISSN 1000-1646, CN 34-1001/N

Research on engine thermal management system and control characteristics based on Simscape physical simulation

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基于 Simscape 物理仿真的发动机热管理系统及控制特性研究

Journal Information

J. Hefei Univ. Tech. (Nat. Sci.), Oct.2023, Vol.46 No.10: 1343-1348, 1361

DOI: 10.3969/j.issn.1003-5060.2023.10.007

Authors

LIU Rujia, LIU Xiangnong, LI Xiaoping, SUN Dongfang, HE Ruiqi, DONG Ting

(School of Automobile and Traffic Engineering, Hefei University of Technology, Hefei 230009, China)

Abstract and Keywords

Abstract: Based on Simscape one-dimensional physical simulation software, this paper developed a simulation model of engine thermal management system, including radiator, centrifugal pump, liquid storage tank and heat transfer module in engine pipe section, using thermal fluid model and thermal model to simulate coolant flow and heat transfer respectively. The mass energy conservation and heat transfer equations of the thermal fluid pipeline module were modified through the source code and adapted into the belt radiator module and the heat transfer module in engine pipe section. Compared with experimental data, the maximum error of the model is verified to be less than 10% in terms of radiator heat transfer coefficient and engine outlet water temperature. On the basis of this model, a pump gear control system and a radiator fan start-stop regulation system were established to make the engine outlet temperature fluctuate less than 2 K under the step change of engine heat. It provides a new method for the research on one-dimensional physical simulation and control strategy of thermal management system.

Keywords: thermal management system; radiator; Simscape physical simulation software; control system

作者信息

刘如佳，刘向农，李晓萍，孙东方，何睿琪，董婷

（合肥工业大学汽车与交通工程学院，安徽合肥230009）

摘要和关键词

摘要: 文章基于 Simscape 一维物理仿真软件, 使用热流体模型和热力模型分别模拟冷却液的流动和热量的传递, 开发一套包括散热器、离心水泵、蓄液罐和发动机管段传热模块的发动机热管理系统仿真模型。通过修改模块代码, 将单根传热管道模块改编成多管段的管带式散热器模块和发动机管段传热模块。与实验数据对比验证, 模型的散热器传热系数和发动机出口水温的最大误差均不超过 10%。在此模型基础上, 建立水泵挡位控制和散热器风扇启停调节系统, 使发动机出口温度在发动机发热量阶跃变化的情况下, 上下波动不超过 2 K。该研究为热管理系统一维物理仿真和控制策略研究提供了新方法。

关键词: 热管理系统；散热器；Simscape 物理仿真软件；控制系统

Funding

中国博士后科学基金资助项目（2020M681983）；中央高校基本科研业务费专项资金资助项目（JZ2021HGTB0093；JZ2020HGQA0211）

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