期刊名称：Advances in Science and Technology Research Journal
印刷版ISSN：2080-4075
电子版ISSN：2299-8624
出版年度：2020
卷号：14
期号：2
页码：155-162
DOI：10.12913/22998624/118945
语种：English
出版社：Society of Polish Mechanical Engineers and Technicians
摘要：The paper presents the methodology for designing the injection shaft drive for diesel engines with 2,3,4,6 and 8cylinders as well as power from 2.5 to 52 kW per cylinder using the FEM method and experimental research. Thepump is the original solution of the authors. The shaft is a basic part of the pump with a complex structure. In orderto assess the state of stress in the shaft, the FEM analytical method was used and experimental tests were carriedout, subjecting the shaft to torsional moment resulting from the transmitted power. Experimental studies confrmedthe results of numerical calculations and the correctness of the adopted solution. The destructive tests were carried out to assess the maximum load capacity of the shaft, loading it with an increasing torque until visible plasticdeformations occurred. This condition appeared at twice the moment (Ms = 602 Nm) in relation to the maximumpredicted moment in operation (extreme operating conditions of the pump shaft). The theoretical studies confrmedvery signifcant stress concentration (αk coefcient at the level of 2.63 or even 4.7), which may be the cause offatigue cracks. It also determines the strength of the shaft and its torsional stiffness, which influences the properfunctioning of the pump and ensures adequate fuel injection phases.
