缸体主轴承孔在主轴承盖二次装配后的变形影响分析  

Distortion Analysis of Mainbearing Bore after Cap Second Assembly

作　　者：王安民[1] 郭强[1] WANG An-min;GUO Qiang(SAIC Motor Co.,Ltd. Technical Centre,Shanghai 201805, China)

机构地区：[1]上海汽车集团股份有限公司技术中心

出　　处：《内燃机与配件》2019年第20期44-47,共4页Internal Combustion Engine & Parts

摘　　要：测得了直径为52的发动机高压铸造铝合金缸体的主轴承孔,在使用不同强度等级及不同拧紧工艺下的主轴承盖螺栓拧紧时,缸体主轴承孔在二次装配主轴承盖螺栓时的尺寸变化情况,探索出为保证缸体主轴承孔在主轴承盖螺栓二次装配后,主轴承孔维持首次加工后的尺寸状态的螺栓强度等级及拧紧工艺的选择方向策略,为后续发动机轴瓦稳定选型提供可靠的数据支撑。The size change condition of the main bearing hole of the high pressure cast aluminum alloy cylinder of engine with diameter of 52 in secondary assembling of the main bearing cap bolts and tightened under different strength grades and different tightening processes is measured. It explores the bolt strength level and the selection strategy of the tightening process for the main bearing bore to maintain the size of the main bearing bore after the secondary assembly of the main bearing bore of the cylinder, to provide reliable data support for stable selection of subsequent engine bearing.

关 键 词：缸体 主轴承孔 二次装配 变形 螺栓压紧力 

分 类 号：TK403[动力工程及工程热物理—动力机械及工程]