Study of the Influence of the Rated Voltage of the On-Board Network of a Modern Car

Abstract

An analysis of trends in the development of modern car designs shows that in recent decades, the most significant growth has been observed in the element base of the on-board electrical and electronic complex (BEC). The problem of oversaturation of the on-board network of cars of traditional designs with electrical and electronic components and the inability of the power supply system to fully provide electrical energy to all consumers is becoming increasingly relevant. There is a tendency for the need to increase the level of the nominal voltage of the on-board network and, accordingly, an additional scientific and technical study of the possibility of organizing the on-board network of modern cars of traditional designs for one supply voltage. The issues of improving the technical and economic indicators of the BEC are solved by choosing the optimal voltage values for each consumer group and for the system as a whole. The main systems that ensure the uninterrupted start of the engine and the operation of all systems and components of the BEC include the systems of: ignition, electric start and power supply. The paper presents the results of a study of the effect of changing the level of the nominal voltage of the on-board network from 12 to 48 V on the electrical characteristics of the ignition system (IS) and the electric starting system (ESS) of traditional passenger cars with an internal combustion engine (ICE).