EXPERIMENTAL STUDY OF THE FORCES ABOVE AND UNDER THE VIBRATION INSULATORS OF DIESEL GENERATOR IN TRANSITIONAL REGIMES

Valyo Nikolov, Krasimir Ambarev

Abstract: This paper presents an established measuring system of the forces above and under the vibration insulators of the unit with a fourcylinder diesel engine and electric generator. Here are presented the components of the measurement system and the methodology created for measurements of bearings reactions above and under the elastic suspension elements of the unit, in a vertical direction, in which the data for the measured value is stored, processed and visualized in a MATLAB environment. The results that were obtained from the measurements of the forces above and under the four vibration insulators of the diesel generator are analyzed and graphically presented in this paper, as a function of the time at the transitional modes: starting, stopping, uploading and downloading with electrical load. The results that were obtained from measurements of the forces above and under the four vibration insulators of the diesel generator and per one working cycle of the diesel engine are presented and analyzed in this paper, as a function of the angle of rotation of the crankshaft at full load (maximum electrical load) and at idle running (without electrical load). With the thus created measurement system and methodology, scientific and applied researches can be conducted, in order to determine the quality of the vibration insulation of machine units with internal combustion engines.

Keywords: Internal combustion engines, diesel generator, measuring, experimental study.

DOI: https://doi.org/10.15623/ijret.2014.0303062