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Study of the fuel efficiency of a transport vehicle in the urban cycle

The author obtained the characteristics of the fuel efficiency of a transport vehicle in the urban cycle with various variants of internal combustion engines, and proposed algorithms for shifting gears of an automatic transmission using computer simulation. External characteristics of engines, three-dimensional graphs of specific fuel consump-tion were obtained using the simulation mathematical model of the machine developed in the LMS Imagine.Lab Amesim software package, verification was performed, and computational experiments were carried out. Based on the results of computational experiments using various algorithms, the most rational mode of operation of various engines was selected to reduce fuel consumption, the ade-quacy and accuracy of the simulation mathematical model of the machine was confirmed.