This article is devoted to determining the parameters of torsional vibration dampers of the internal combustion engine crankshaft in the entire high-speed mode of its operation. Currently, these parameters are set only for one main harmonic of the distributing moment. At the same time, it is assumed that the remaining harmonics give a slight increase in the amplitude of torsional vibrations. Changing the rotation rate of the crankshaft in the entire range of the operating mode leads to the appearance of other resonant modes, although not as significant as the main resonant mode. Therefore, for more stable quenching of torsional vibrations, a quenching device with variable characteristics is required. The proposed method for determining the parameters of the torsional vibration damper under changing speed and load modes of the internal combustion engine, which ensure efficient use, can be useful in the design of new highly accelerated internal combustion engines.

The article considers the problem of the lack of methods for calculating and selecting design parameters when developing and implementing a fiber-optic force sensor (FOFS) as a separate element or component of the system. To solve this problem, we propose to develop a transform function of the power loss of the optical signal from the bending radius of the fiber under the action of applied forces, linking the features of the optical fiberand physico-mechanical parameters of the base on which the fiber is located. Based on the calculations performed, a variant of the FOFS prototype design is proposed.

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