Rational choice of operating parameters of an automobile hybrid power plant

Abstract

The article presents the results of a scientific study aimed at studying the issue of rational regulation of hybrid-type automobile power plants containing internal combustion engines and electric machines. The authors propose particular and complex criteria for evaluating the efficiency of the workflow, both in stationary and in a complex of transient modes of operation of hybrid power plants (HPP). A corresponding technique for numerical simulation of the working process has been developed. Mathematical models of the characteristics of the units are compiled, including the partial speed characteristic of the internal combustion engine, the mechanical characteristics of electrical machines and the characteristic of the differential distributor. A technique for optimizing the regime parameters of the HPP for a given mode of movement of an automobile vehicle is proposed. As an example, for a serial HPP P610 of Toyota Prius 2015 model year automobile vehicle, an assessment was made of the efficiency of the workflow under given driving conditions: the main properties were calculated, recommended values for the power utilization factors of each of the engines were proposed, recommendations were given for choosing the modes of the HPP and its components.