Gontinuously variable transmissions and their ratio changes

Currently, in order to effectively use the engine's energy resources and implement the required properties of the car, manufacturers are trying to impart certain properties to the transmission design that will ensure the most complete coordination of their joint work. However, even the optimal constructive solution can not be universal, i.e. what is good for some operating conditions is not effective for other conditions. Therefore, today it is economically efficient to create vehicles intended for a certain, relatively narrow range of operating conditions. The article suggests the methods of determining the optimum gear ratios of a continuously variable transmission of a car taking into account the mode of operation of its engine. The results of calculation of the towing-dynamic and fuel-economic indicators of a car compared to the actually existing prototype confirmed the hypotheses and give all the reasons for recommendation to use this method in practice when selecting gear ratios of a continuously variable transmission, depending on the mode of travel.