Hybridization of vehicles is one of the means of reducing fuel consumption, which is especially important in urban areas, to reduce emissions into the air. In the thesis, we described the design and implementation of an electric propulsion system and the control of electric motors, for converting a vehicle into a mild hybrid. We designed a system that uses state-of-the-art data to control the already installed electric motors. As part of the work they were carried out three ways to control electric motors. They are divided into an analogue, digital and autonomous system, where the emphasis is on using the automotive communication protocol. Different systems were tested on the road and compared to each other. In the case of the last system an electronic differential was applied and an analysis of fuel consumption with and without the use of electric motors was performed.
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