Abstract: Introduction. The article presents the improvement efficiency of fuel and economic properties of the vehicle in WLTC driving cycle by means of the main gear ratio changing. Materials and methods. Great attention is paid to the fuel consumption determination by the numerical simulation of the moving process in the driving cycle. To illustrate this process, a continuous function of the vehicle speed and various mathematical models of the internal combustion engine characteristics – based on the classical theory, and also on the basis of experim...
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Topics: 
Automotive engineering
Mechanical engineering