摘要
车辆正常工作时,常因换挡等行为导致某时刻温度过高造成变速箱内部零部件损坏,影响车辆的正常行驶,因此有必要进行变速箱瞬态温度场的研究.根据变速箱传动部件的热负荷特性,用热网络法以热源和热阻的形式建立变速箱的瞬态热网络模型,计算了变速箱内各瞬态节点温度,分析车辆从起步到平稳行驶的整个过程中湿式离合器、行星轮等高热零件的温升情况.结果表明,湿式离合器的温升规律与挡位有关,齿轮的温升规律会随着挡位的变化而变化,行星排内零件的温升规律基本相同且变化稳定.
When the vehicle works normally,the internal parts of transmission are often damaged due to high temperature caused by shifting and other behaviors,which affects the normal driving of the vehicle.Therefore,it is necessary to study the transient temperature field of the transmission.According to the thermal load characteristics of transmission components,the transient thermal network model of transmission was established by thermal network method in the forms of heat source and thermal resistance.The temperature of each transient node in the transmission was calculated,and the temperature rise of high-heat parts of wet clutch and planetary wheel during the whole process of vehicle starting to driving smoothly was analyzed.The results show that the temperature rise law of wet clutch is related to the gear shift.The temperature rise law of the gear is changed with the change of shift position.Temperature rise of parts in planetary gear is basically the same and changes steadily.
作者
宫燃
孙凤鸣
陈晨
沈中泽
GONG Ran;SUN Fengming;CHEN Chen;SHEN Zhongze(School of Automotive and Traffic Engineering,Jiangsu University,Zhenjiang,Jiangsu 212013,China)
出处
《江苏大学学报(自然科学版)》
北大核心
2025年第4期395-401,共7页
Journal of Jiangsu University:Natural Science Edition
基金
国家自然科学基金资助项目(52375185)。
关键词
变速箱
热网络
瞬态温度
热负荷
温度节点
transmission
thermal network
transient temperature
heat load
temperature node
