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This research was funded by competition “Szybka Ścieżka 1_2020” application for cofinancing of the project no.: POIR.01.01.01-00-0394/20 “Development of an innovative power supply module for an electric driven bus using
hydrogen and methanol as fuel to charge the vehicle’s battery while in the motion”
Research conducted around the world shows that energy harvesting (EH) systems can be used in contemporary
vehicles powered by combustion engines, hybrid or electric motors. Unfortunately, the efficiency of modern com-
bustion engines is only about 40%, the remaining energy is lost and can be recovered to some extent. Therefore,
the search is ongoing for systems that will use this part of the energy to power specific systems or micro-sensors
installed in the vehicle. The article presents the possibilities of energy harvesting from four main sources in the
vehicle: energy during braking, energy from the damping of the vehicle suspension, from the exhaust system and
energy from the vibrations of the combustion engine. Based on the analysis of the literature on the presented re-
search of various scientific centres and the author’s experiment, it can be concluded that there is a huge potential
for obtaining thermal energy from the engine exhaust system and the vehicle suspension system. A field that has
not been explored much, but according to the authors also has energy potential, is the recovery of energy generated
during vibrations in the suspension of an internal combustion engine in the engine compartment of the vehicle. For
the obtained measurement data from the experiments, initial digital processing of the signal was performed using
a low-pass filter, then the fast fourier transform (FFT) and the Hilbert-Huang Transformation (HHT) were used.
Preliminary research shows the possibility of mounting the energy recovery system in the engine compartment and
the potential possibility of obtaining electricity in certain operating states of the combustion engine.