Tecnologías en los sistemas de propulsión híbridos: revisión de literatura

This paper presents a summary of a diversity of technological developments in hybrid systems for automotive propulsion. To do this, keywords such as hybrid propulsion, electric cars and conversion to hybrid were searched in Google Scholar. In total, nearly 100 documents were obtained published between 1978 and 2018. In the data collected, it was found that hybrid propulsion systems (gasoline and electricity) present five areas that describe technological development: power unit; power control system; energy storage system; structure or architecture of the powertrain, and system to regenerate energy. However, the development of electric and hybrid vehicles still requires further development to match and go beyond the performance and characteristics of MCI vehicles. To achieve this, emphasis should be placed on improving the energy storage system to get greater travel per load, as well as increasing energy density (kW / weight), reducing costs, extending load cycles and charging time reduction.