Prospects of gearbox usage in electric transport

Abstract

Due to the tightening of environmental requirements for civilian vehicles, a significant portion of the world’s automakers has come over to producing hybrids. Authors believe that the production of this type of vehicle is a temporary transitional process, after which a subsequent transition to the production of electric transport (ET) or electric vehicles will begin. As it is known, the ET has a rather low capacity of battery storage, and therefore it becomes necessary to find effective ways to increase this parameter. The task of increasing the energy efficiency of ET can be put forward at the level of the mechanisms involved in power transmission, or at the level of the auxiliary systems used in the operation of the ET, etc. If the task is solved at the mechanism level, scientific research will require the development of ET models and to predict the energy consumption with variable and constant gear ratio in the standard cycle of motion in order to understand whether this proposal can significantly increase the battery efficiency. One of the most effective ways is to optimize energy consumption by using a multistage gearbox. In the simulation it is desirable to use the Europe NEDC (New European Driving Cycle) and USA FTP-75 (Federal Test Procedure) cycles, because they contain a large number of acceleration and brake phenomena and, thus, can give a more real picture of the battery energy consumption. In the end, it is necessary to correctly compare the quantitative benefits of energy efficiency and such parameters as the weight and complexity of the design, which together constitute the added value of a particular ET.