‘Commercial Vehicle Electrification’ Challenges in Dimensioning and Integration in the Entire Vehicle

Abstract

Main topics are the development and build-up of an 18 ton hybrid truck with a parallel hybrid drive train. With this truck it is possible to drive up to 3 km in the pure electric driving mode. In this R&D Project, a hybrid truck has been developed with an integrated motor generator (IMG) including a clutch system for pure electric driving, a Li-Ion power battery, electrified traction voltage auxiliaries (steering pump, air compressor and climate compressor) and the cooling system for the new power components. The first part of the chapter shows a detailed system layout of the hybrid truck that has been developed. Chapter 2 shows the developed simulation model which is used for the dimensioning and for detailed simulations of hybrid drive trains. A special focus has been laid upon the operation strategy of hybrid commercial vehicles. To gain high market shares for hybrid trucks, the total cost of ownership will be the main driver, so the development of affordable hybrid components (battery, traction system, auxiliaries) with high efficiency and the development of optimized overall hybrid vehicles systems has to be the short term objective.

F2012-B02-054