The strong demand on the OEM's to reduce fleet fuel
consumption (CO₂ emission) enforces the technology development of
fuel-efficient vehicle concepts. To achieve these goals R&D
programs were launched to bring new powertrain concepts to market,
e.g., hybrid powertrains as a combination of conventional and
electrical systems, full electrical powertrains with range
extenders as well as IC-engine-equipped powertrains with downsized
combustion engines. The market success of these concepts will be
decided by the realizable compromise of fuel consumption, driving
dynamics and customer acceptance. The question, which optimum
powertrain concept can be delivered to the customer, must take into
account the cost/benefit ratio.
With increasing interest in the development of Hybrid Electric
Vehicle (HEV) and Full Electrical Vehicles (FEV), the demand for
comprehensive system design and analysis to support the Powertrain
Development Process (PDP) is rising. More advanced mathematical
models of propulsion system components (both steady state and
dynamic) are requested.
This paper shows the approach setting up a development platform
based on consistent simulation tools which are applied throughout
the entire development process adjusting the simulation models to
the requirements of the various development phases from concept
phase to testing.
Examples of such consistent methodologies together with the
integration of simulation and testing tools are shown for the key
tasks in the PDP as there are - Thermodynamics, combustion and
emission development; - Mechanics development; - Virtual thermal
management system development; - Hybridization and electrification
(detailed presented); and - Calibration development.