Abstract
The requirements of passenger cars regarding driving fun and comfort are continuously growing. In spite of this fact the fuel consumption and the emission of vehicles has to be reduced. Hybridization is one of most effective measures to reach challenging emission and consumption targets.
In order to show Siemens VDO's portfolio for hybrid components "at work" and integration capabilities the hybrid development house at Siemens VDO decided to build a state of the art full hybrid vehicle. The idea: combine driving fun with reasonable fuel economy. The result: an uncompromised sport coupé with excellent driving features.
Siemens VDO has accepted the challenge to fulfill the increasing demands on hybrid electric drives. We are in the process to develop a Hybrid Tool Box, which includes high and low voltage motor inverters, electric motors and vehicle control algorithms. The sport coupé is equipped with components out of this hybrid tool box with top level performance.
This paper describes the contents of the hybrid tool box and in detail the demonstration vehicle. It explains the development targets, the powertrain and electrical setup, and the hybrid components like electric motors, power inverters and high power Lithium battery. Closer attention is dedicated to the driving strategy and energy management - a functional system called Integrated Powertrain Management IPM®. Special solutions for air conditioning, combustion engine start and pure electric driving will be discussed. In this context the concept of the "electric clutch" will be also presented. The summary of evaluations concerning driving dynamics, pure electric range and fuel consumption will show the range of full hybrid capabilities.
The possible portability to different vehicle concepts will give an outlook.
Keywords:Parallel Hybrid Powertrain, Electric Drive, Electric Air Conditioning, Driving Strategy, High Power Battery, IPM®.