基于有限元法的热套凸轮轴冷却工艺研究  

Cooling Technology of Shrink-Fit Camshaft Based on Finite Element Method

作　　者：赵蛟 邹宏[1] 余超 唐斯琪 姚进[1] ZHAO Jiao;ZOU Hong;YU Chao;TANG Siqi;YAO Jin(School of Manufacturing Science and Engineering,Sichuan University,Chengdu　610065,China;Cnaic Chengdu Auto Parts Co.,Ltd.,Chengdu　610504,China)

机构地区：[1]四川大学制造科学与工程学院,四川成都610065 [2]中汽成都配件有限公司,四川成都610504

出　　处：《车用发动机》2018年第2期87-92,共6页Vehicle Engine

摘　　要：基于有限元法研究热套凸轮轴装配工艺,分析采用不同流体以不同吹冷速度强制冷却凸轮轴时的冷却效率。结果表明,随着冷却流体流速的增大,冷却速度显著增大,但冷却速度对于流速增加的敏感性逐渐降低,缩短同样的冷却时间所需的流速增量越来越大。相比于吹冷速度,拥有不同物性参数的不同流体对于冷却效率的影响更加显著。冷却过程中凸轮轴轴体由于热传导产生的膨胀并不影响下一缸凸轮的装配。Based on the finite element method,the assembly process of shrink-fit camshaft was studied by analyzing the cooling efficiency of blowing-forced cooling camshaft at different velocities with different fluids.The results show that the cooling velocity increases significantly with the increase of cooling flow velocity,but the sensitivity of cooling rate to the increase of flow velocity decreases gradually.The increment of flow velocity for the same cooling rate becomes larger.Compared with the blowing velocity,different fluids with different physical parameters have a more significant effect on the cooling rate.The expansion of camshaft shaft due to heat conduction during the cooling does not affect the cam assembly of the next cylinder.

关 键 词：过盈连接 热套凸轮轴 对流传热 冷却速度 

分 类 号：TK402[动力工程及工程热物理—动力机械及工程]