车用柴油机缸孔在缸盖螺栓预紧力下变形的数值模拟与试验研究  

Numerical Simulation and Experimental Investigation on Cylinder Bore Deformation of Automotive Diesel Engines under Cylinder-Head Bolt Pretightened

作　　者：祖炳锋[1] 付光琦[1] 徐玉梁[1] 靳素华[2] 钱多德[2] 杨林强[2] 高伟[2] 苏超[3] 

机构地区：[1]天津大学内燃机研究所,天津300072 [2]安徽江淮汽车股份有限公司,合肥230022 [3]安徽华菱汽车股份有限公司,马鞍山243061

出　　处：《内燃机工程》2010年第2期98-104,共7页Chinese Internal Combustion Engine Engineering

摘　　要：建立了493车用柴油机缸孔变形的整体接触关系模型,提出了缸盖垫的非线性组合模型及缸套圆环模型。对缸孔在缸盖螺栓预紧力下的变形进行数值模拟,并在相同状态下进行静态测量。模拟结果表明:对于4缸柴油机而言,第二缸与第三缸变形的方向和大小均相似,而第一缸与第四缸则各不相同。静态测量结果显示:各横截面的变形趋势及最大变形位置与模拟结果基本相同,变形值误差为3%～12%。采用模拟计算和试验测量相结合的方法,可以获得缸孔变形的全面信息,为优化结构设计提供依据。同时也可对模拟模型和边界条件的正确性进行标定和验证。An integral contact model was established to analyze the cylinder bore deformation of model 493 automotive diesel engine. A non-linear combined model of cylinder head gasket and a cirque model of cylinder liners were put forward . The numerical simulation and static measurement were performed under cylinder head bolts pretightened. The simulated results show that the deformation direction and magnitude for the second and the third cylinder are similar and those for the first and the fourth cylinder are individual. The deformation trend and the max. value position in transverse sections obtained in static measurement are basically the same as the simulated results, the errors are within range of 3% to 12 %. Using the numerical sim- ulation method combined with the static measurement comprehensive information on cylinder bore deformation may be achieved, which provides the basis for structural optimization designing, and the model and boundary conditions can be calibrated and verified thereby.

关 键 词：内燃机 车用柴油机 缸孔变形 缸盖螺栓预紧力 

分 类 号：TK422[动力工程及工程热物理—动力机械及工程]