The New Porsche Cayenne V8-Engines

Authors

Dipl.-Ing. S. Knirsch, Dipl.-Ing. M. Kerkau, Dipl.-Ing. T. Wasserbäch, Dr.-Ing. H. J. Neußer, Dr.Ing.h.c.F.Porsche AG, Weissach

Year

2003

Print Info

Fortschritt-Berichte VDI, Reihe 12, Nr. 539

Summary

With the completely newly conceived V8 engines for the Porsche Cayenne, it has proved possible to realize the numerous demanding requirements of a modern engine concept for a sport utility vehicle (SUV) in convincing fashion. Values typical of Porsche, such as high engine power, revving ability and agile response in combination with high engine torque at low engine speeds provide the Porsche Cayenne with superior performance in the SUV segment. At the same time, specific parameters such as, for example, the power output of 55.4kW/l for the V8 normally aspirated engine, Figure 1, and 73.4kW/l for the bi-turbocharged V8, Figure 2, an outstanding mean pres-sure of 11.4bar at 2000rpm and a fuel consumption of 359g/kWh (normally aspirated en-gine) and 375g/kWh (bi-turbocharged engine) at 2000rpm and a pme of 2bar underline the successful concept of the new V8 engines. In addition, the engines possess excellent off-road capabilities, allowing uphill and down-hill gradients and lateral inclinations of up to 45º to be mastered. Further characteristics are a high overall rigidity of the basic engine structure and low engine noise levels, obviating the need for additional sound-absorbing measures such as, for example, largearea engine covers. The engine configurations of both the Cayenne S and the Cayenne Turbo are the same for all markets worldwide.

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