RT Journal Article SR Electronic A1 Plomer, J. T1 New Concept of Hybrid Drive with Multi-Gear Planetary Transmission JF Transactions on Transport Sciences YR 2014 VO 7 IS 1 SP 17 OP 26 DO 10.2478/v10158-012-0050-z UL https://tots.upol.cz/artkey/tot-201401-0003.php AB Paper presents an innovative concept of a hybrid drive with two- or three-gear planetary transmission. The arrangement can be extended by one or two additional clutches. Considering the minimum of two-gear planetary transmission, the combustion engine can work in an optimum efficiency mode, i.e., with low consumption and thus with reduced emissions of pollutants, as well as in modes enabling energy storage. Individual gears of the multifunction transmission, constructed as a system as simple as possible, accommodate various driving demands, e.g., serial or parallel driving modes, or parking blockage.