The potential of 48V HEV in real driving

Abstract

Due to the limited availability of fossil fuel resources and negative influences of the growing transport sector, legal regulations have been approved to reduce emissions of passenger cars. These targets can be reached by partially electrifying the vehicle’s drivetrain. Hybrid Electric Vehicles (HEV) also allows meeting future requirements and they are expected to bridge the gap to Battery Electric Vehicles. For this reason, there are many types of HEV with very different drivetrain layouts. Existing HEV commonly show a high degree of hybridization, e.g. Full HEV or Plug-In HEV, and are based on existing vehicle designs. They enable high electric ranges and offer different operating modes. Although these HEV are ecologically beneficial and possess high driving dynamics, they are not competitive with conventional vehicles since their development and fabrication processes are more expensive. Electrical components as well as batteries have to be integrated into the vehicle. In addition, an operating strategy has to be developed. Thus, it is impossible to retain the vehicle design and the price at the same time.