某四缸汽油机缸体螺纹滑扣失效分析  

Failure Analysis of Screw Thread of a Four Cylinder Gasoline Engine Cylinder

作　　者：邱继虎 张红雨[1,2] 张堪想[1,2] 杨志坤[1,2] 

机构地区：[1]长城汽车股份有限公司技术中心,河北保定071000 [2]河北省汽车工程技术研究中心,河北保定071000

出　　处：《柴油机设计与制造》2016年第3期37-40,共4页Design and Manufacture of Diesel Engine

摘　　要：针对缸体主轴承盖螺栓螺纹在试验和装配过程中出现滑扣,对导致此现象的原因进行分析。主要从缸体螺纹设计、加工、缸体铸造质量、螺栓设计、螺栓加工等方面进行详细分析,结果表明,主要原因为缸体螺纹加工工艺选择不合适、螺栓旋合长度偏小、螺栓结构设计不合理和初始力矩选择不合适。This paper presents the slippery buckle in view of the cylinder body main bearing cap bolt thread in the experiment and the assembly process, to causes this phenomenon the reason to carry, on the analysis. Mainly from cylinder body aspects and so on thread design, processing, cylinder body castability, boh design, bolt processing carries on the muhianalysis, finally indicated： The primary cause for the cylinder body thread machining craft choice inappropriate, the bolt turns on lathe gathers the length to be small, the bolt structural design unreasonable and the initial moment of force choice is inappropriate.

关 键 词：汽油机 螺栓 螺纹 滑扣 分析 

分 类 号：TK413[动力工程及工程热物理—动力机械及工程]