本文是由Laystall和Qualcast公司顾问Edward Hartwell编写的。作者在对曲轴的应力和弯曲试验进行分析的基础上提出了铸铁曲轴设计时应考虑的一些技术问题。文内以四缸机为例,对曲轴设计中有关连杆轴颈压力及其测定方法、弯曲疲劳强度,材料、动平衡以及加工等问题做了较详尽的的叙述。 This article was written by Edward Hartwell, consultant for Laystall and Qualcast. Based on the analysis of crankshaft stress and bending test, the author put forward some technical problems that should be considered when designing cast iron crankshaft. In this paper, a four-cylinder engine is taken as an example to describe the crankshaft design in detail about the pressure of connecting rod journal and its measuring method, bending fatigue strength, material, dynamic balance and machining.