低散热柴油机整机传热快速预测模型  

Heat transfer prediction model of low-radiation diesel engine

作　　者：刘勇[1] 刘永丰 王龙飞 孙婉荣 明平剑[1] LIU Yong;LIU Yongfeng;WANG Longfei;SUN Wanrong;MING Pingjian(College of Power and Energy Engineering,Harbin Engineering University,Harbin 150001,China;China North Engine Research Institute,Tianjin 300400,China)

机构地区：[1]哈尔滨工程大学动力与能源工程学院,黑龙江哈尔滨150001 [2]中国北方发动机研究所,天津300400

出　　处：《哈尔滨工程大学学报》2021年第7期1003-1008,共6页Journal of Harbin Engineering University

基　　金：国家自然科学基金项目(51479038);中央高校基本科研业务费重大项目(HEUCFP201711).

摘　　要：为探究低散热柴油机在采取隔热措施前后缸内的传热过程及热量分布,本文基于热阻-热容动态传热网络模型及柴油机热力学模型的耦合计算开发了柴油机的传热预测算法,并设计了GUI人机交互界面软件。以某单缸柴油机为研究对象,采用该传热模型正确预测了单缸机工作过程中的缸内压力、部件壁面温度、热平衡等参数,并根据相应的隔热方案快速实现发动机隔热后的传热计算。该模型能够应用在低散热柴油机的开发设计阶段,对不同的隔热方案进行整机的传热预测,实现对隔热效果的预先了解。In order to explore the heat transfer process and heat distribution in the cylinder of low heat dissipation diesel engine before and after taking heat insulation measures,this study introduces a heat transfer prediction algorithm for diesel engine based on the coupling calculation of dynamic heat transfer network model of heat resistance-heat capacity and thermodynamic model of diesel engine.This study also designs a friendly graphical user interface(GUI)human-machine interface software.Taking a single cylinder diesel engine as the research object,the heat transfer model correctly predicted the parameters such as cylinder pressure,component wall temperature,and heat balance during the working process of a single cylinder engine.Moreover,the model quickly realized the heat transfer calculation after engine heat insulation according to the corresponding heat insulation scheme.This model can be applied to the development and designing stage of low heat dissipation diesel engine and prediction of heat transfer of the whole engine according to different heat insulation schemes in order to realize the preliminary understanding of the heat insulation effect.

关 键 词：柴油机 低散热 隔热 程序开发 热传递 热阻-热容网络 热管理 数值模拟 

分 类 号：TK422[动力工程及工程热物理—动力机械及工程]