The method of statistical parameters calculation of a transport vehicle with a combined power unit and a flywheel energy storage

Abstract

The complexity of determining the internal combustion engine (ICE) power level, in general, and the use of a flywheel power energy, in particular, makes it necessary to evaluate and take into account a large number of probabilistic objective and subjective factors in traffic conditions. A vehicle with a combined power unit (CPU) has an additional unit that presents a problem - a stored flywheel energy with a stepless variable drive and with a specific algorithm of connection to the transmission. The productivity of a transport vehicle is characterized by an average speed of motion, which depends on the probabilistic external environment impact, determined both by the objective motion conditions and subjective environment factors. The external impact of the environment (road or off-road) on the transport vehicle is represented by a vector with random components that have stationarity and ergodicity properties. Comparative characteristics of such systems based on the average speed of movement were given by using the developed technique of statistical modeling of external disturbances affecting a conventional or CPU vehicle equipped with an ICE and a flywheel of stored energy. The effect of the energy capacity of the flywheel and, in particular, the setting power of the stepless hydrostatistic-mechanical drive of the CPU on the average speed of the vehicle with a mechanical transmission and the loading of the ICE was assessed. The factors limiting the speed of the transport machine and their impact on the effectiveness of the investigated system in motion were studied and determined. The obtained results allowed to determine and optimize the parameters of the CPU with the flywheel energy storage.