48 V P2 Hybrid Vehicle with an Optimized Combustion Engine – Fuel Economy and Costs at their Best Combined with Enhanced Driving Behavior

Authors

Dipl.-Ing. U. Wagner, Dipl.-Ing. M. Rauch, Dipl.-Ing. (DH) T. Eckl, Schaeffler, Herzogenaurach; Dr. A. Schamel, Dipl.-Ing. C. Weber, Dipl.-Ing. M. Springer, Ford, Cologne; Dr. O. Maiwald, Dipl.-Ing. T. Knorr, Dr. S. Lauer, Continental, Regensburg

Year

2016

Print Info

Fortschritt-Berichte VDI, Reihe 12, Nr. 799

Summary

The vehicle concept presented in this paper is aimed at the market between the 48 V starter generator systems and high-voltage hybrid systems. The 48 V hybrid system presented here, which offers a highly attractive cost–benefit ratio, enjoys a special significance as one of the few P2 hybrid vehicles incorporating a manual transmission. To ensure both significant CO₂ savings and excellent drivability, a high-compression turbocharged gasoline DI engine was combined with "late intake valve closing" and a RaAx turbocharger. This engine concept was used as a basis for creating a highly efficient overall powertrain with a 48 V P2 hybrid system. The concept incorporates synergies that can be leveraged through the combination of an optimized combustion engine and 48 V technology. An electrically heated catalyst enables innovative operating modes in compliance with the emission legislation.