Anyone who reflects on the future of society cannot do so without at the same time thinking about the future of our transportation systems. The dilemma is obvious. On the one hand, mobility must be maintained as it is crucial to economic development and because people are eager for individual mobility. On the other hand, traffic imposes heavy burdens on people and on the environment, on cities and communities and on our national economies. Finding a solution to that dilemma seems to be difficult, in fact we have not even developed a rough idea of how it could look like. This is why the North Rhine-Westphalia Science and Research Ministry came up with the plan to work out a well-founded scientific basis on which to solve the problems inherent in our transport system. A research network has been established and sponsored with government funds for a period of three years with a view to realising that objective. The "Traffic Simulation and Environmental Impact" research network is composed of researchers who have an excellent reputation as North Rhine-Westphalia traffic experts. Cutting across various disciplines of knowledge, the network aims to integrate transportation and natural sciences, particularly physics and mathematics, in a move to profit by the synergy between technical know-how and innovative methodology. The present volume is intended as a progress report and a prologue to the forthcoming international colloquium which represents the highlight and at the same time the end of the three-year project funding period.

Preface to the Series EUROMOTOR is an advanced training program sponsored by the Eu- pean Union for engineers of the European automotive and supplier ind- try. Its aim is the exchange of experiences with new developments - tween industry and university. Courses are offered in all fields around the automobile, as for example vehicle dynamics, vibration & ergonomics, powertrain, crashworthiness, manufacturing, aerodynamics, testing and - tigue as well as courses in the field of body engineering and electronics. For further information, please contact: EUROMOTOR Support Office, Caroline Marshall, RSBD, University of Birmingham, Birmingham B15 2TT, UK, Tel: +44 (0) 121 414 3695, Fax: +44 (0) 121 414 7151, e-mail: [email protected]. Preface to this volume On June 17th and 18th, the EUROMOTOR Course "1st Aachener El- tronics Symposium" took place at the Institut fur Kraftfahrwesen (ika) in Aachen/Germany. The conference dealt with the main topic "Fusing Strategies for Future Vehicle PowerNets".

Nach einer kurzen Darstellung der bisherigen grundsatzlichen Entwicklung im Bereich der Fahrzeugantriebe werden die aktuellen Herausforderungen und Treiber fur Veranderungen beschrieben. Fur die Schlusseltechnologien bei Elektrofahrzeugen, wie den Elektromotor, die Steuerung und die Batterien, werden die zum Verstandnis notwendigen technischen Aspekte vorgestellt. Es schliesst sich unter Verwendung eines Kostenmodells eine Wirtschaftlichkeitsbetrachtung an. Abschliessend werden im Sinne der Konsequenzen die Implikationen auf die Automobilindustrie sowie die Strategien fur die Automobilhersteller und die Automobilzulieferer abgeleitet. Dazu gehoeren moegliche Kooperationsmodelle und neue Produkttechnologien.

In den letzten drei Jahrzehnten ist der Anteil der Elektronik in Kraftfahrzeugen dramatisch gestiegen. Die Anteile werden immer grosser und der Trend halt, getrieben von steigenden Kunden- und Umweltanforderungen, ungebremst an. Bald wird der Wertanteil der Elektronik am Gesamtfahrzeug bei 20 Prozent liegen. Nahezu alle Funktionen des Fahrzeugs werden heute elektronisch gesteuert, geregelt oder uberwacht. Ausgehend von den physikalisch/technischen Grundlagen der Elektronik und Bauelemente werden Funktion und Anwendung von Komponenten und Systemen in Motor und Fahrwerk in Bordnetz, Fahrerassistenzsystemen, Infotainment und Multimedia gezeigt. Kapitel uber Softwareentwicklung, Beleuchtung, Passive Sicherheit und Diagnose runden den Inhalt ab