Analysis of \(\hbox {CO}_2\) reduction potentials and component load collectives of 48 V-hybrids under real-driving conditions

Abstract

The development of innovative powertrain technologies is crucial for car manufacturers to comply with decreasing \(\hbox {CO}_2\) emission limits. They face the challenge to develop products which fulfill customer requirements in terms of functionality, comfort and cost but also provide a significant \(\hbox {CO}_2\) efficiency improvement. \({48}\hbox { V}\)-hybrids can achieve these conflicting goals due to their low vehicle-integration effort and system costs while substantially increasing powertrain efficiency. The variance of real-driving scenarios has to be considered in system development to achieve the maximum customer benefit with the chosen system design, such as installed electrical power or topology. This paper presents a comprehensive investigation of different \({48}\hbox { V}\)-system designs under real-driving conditions. The influence of varying real-driving scenarios on component load collectives is analyzed for P1 and P2 topologies. Furthermore, the \(\hbox {CO}_2\) reduction potential and the influence of different hybrid functions such as electric driving is identified. The contribution of this paper is the identification of \({48}\hbox { V}\)-system potentials under real-driving conditions and the corresponding component requirements, in order to support the development of customer-oriented \({48}\hbox { V}\)-systems.