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Oleksander Veretennik, Dmitry Kardashev, Sergey Aboleshkin
Technology transfer: fundamental principles and innovative technical solutions , Volume 3, pp 45-47; doi:10.21303/2585-6847.2019.001048

Abstract: Detector of internal combustion engine’s crankshaft torsional vibrations based on accelerometer method is designed. It consists of a measuring and transmitting part, which is mounted on the crankshaft of a diesel engine or the propeller shaft of a vessel and a receiving and recording part placed remotely. The measuring and transmitting parts of detector is easily mounted on area of the shaft of the vessel important for the measurement, which are difficult to access for other methods of vibration measuring. It allows directly in real time to measure the tangential accelerations of the shaft without interfering in the propulsion unit work.Carrying out such measurements allows to control the arising torsional stresses and signalling the excess of their safety limit.The measurement results of engine's pulsations of rotation of the crankshaft, arising during operation, allow to watchkeeping engineer to analyze the quality of the working process of each engine’s cylinder in real time and at different operating modes of the vessel. This analysis makes it possible to assess the technical condition of the engine’s parts and assemblies (cylinder liner, piston, o-rings), the quality of the fuel equipment of the diesel engine and, in general, allows to control the technical condition of the entire engine.
Keywords: Vibrations / combustion / engine / cylinder / crankshaft / accelerometer / stresses / Part / Mounted / Transmitting

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