摘要
针对4100QBZ型涡轮增压柴油机热负荷高的问题,采用硬度塞测温法实测了4个外特性点工况下活塞头部与侧面共19个特征点的温度,并结合有限元分析方法分析了增压柴油机标定功率工况下活塞三维温度场、热应力场及变形。研究结果表明,4100QBZ型涡轮增压柴油机活塞顶面工作温度随转速的升高而升高,在标定功率工况下活塞表面工作温度最高达368℃;在热负荷作用下,最大Von Mises应力为69.3 MPa,出现在活塞销座与销接触面上方尖角处,最大变形为0.474 mm,出现在活塞头部排气口一侧。
To solve the high thermal load of 4100QBZ turbocharged diesel engine,the 19 characteristic dots surface temperature of turbocharged diesel engine piston was measured under four engine operation conditions by rigidity-plug temperature measurement method.Combining with finite element analysis method,piston 3-D temperature field and thermal stress or distortion under the rated power operation conditions was analyzed.The study indicate that the working temperature of piston surface of diesel engine increases w...
出处
《内燃机学报》
EI
CAS
CSCD
北大核心
2007年第5期445-450,共6页
Transactions of Csice
基金
云南省自然科学基金青年项目(2005E0014Q)
关键词
增压柴油机
活塞
温度测量
热应力
Turbocharged diesel engine
Piston
Temperature measurement
Thermal stress
