Abstract
Internal combustion engines of vehicles operate in conditions of unsteady modes, in which there is a constant change in the angular velocity of the crankshaft and the cyclic fuel supply, which causes a change in thermal and mechanical loads on the parts of the cylinder-piston group. This variability in the nature of loading can cause cracks to appear in the parts surrounding the combustion chamber, in particular in the cylinder head (CH), and subsequently lead to engine failure. Therefore, after the production of a prototype of a new engine, tests for reliability and stability of parameters are provided during bench tests. For a detailed reliability test, accelerated tests of the engine as a whole or its individual components are provided. For testing parts and assemblies, non–motor stands (NMS) are used, which, according to the type of load created, can be divided into thermal, mechanical and combined, and according to the sources of the loads created, into hydraulic and pneumatic, as well as electrical and chemical, respectively. It is noted that the mechanical load creates stresses almost 2.5 times less than the temperature one, therefore, when tested on non-motorized stands, it cannot be imitated. The analysis of NMS created in Russia is carried out. Based on the tests, it is concluded that it is rational to use thermocyclic loading stands, taking into account the mounting load, but without simulating forces from gas pressure, to conduct accelerated tests for the reliability of CH.
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Gots, A.N., Klevtsov, V.S. (2023). Non-motor Stands for Accelerated Testing for Reliability of Piston Engine Cylinder Heads. In: Radionov, A.A., Gasiyarov, V.R. (eds) Proceedings of the 8th International Conference on Industrial Engineering. ICIE 2022. Lecture Notes in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-031-14125-6_19
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