Estimation of the efficiency of road construction machines in the design

Abstract

The reasons for the decrease in the efficiency of road construction machines are fluctuations in speed and load, deviations of which from the optimal value in terms of efficiency and causes an increase in energy losses and a decrease in efficiency. A particularly significant decrease in efficiency is observed in power units with diesel engines equipped with speed controllers that are not designed to control the efficiency of fuel consumption. The increase in energy consumption of power units with internal combustion engines in transient modes requires the creation of energy models and, based on them, the generation of control signals to reduce fuel consumption by working on the economic characteristics of the internal combustion engine. The developed energy model makes it possible to simulate the characteristics of a power unit with an internal combustion engine and develop a management strategy in order to increase the efficiency of road construction machines in transient modes by choosing the optimal ratio of the parameters of high-speed and load modes.