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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.

The challenge of todays powertrain and vehicle development is the near-zero-emission and CO2 reduction. The measures to decrease CO2 and NOx are optimization of the combustion process, downsizing of the powertrains and aftertreatment as well as the optimization of traffic conditions. Unfortunately these measures are in large part contradicting the NVH and durability requirements as well as the driveability. Therefore the powertrain and vehicle development is forced to find measures to compensate negative influence of the above mentioned measures on other vehicle design and quality targets. This has also a strong influence on the increasing requirement to create OEM- characteristic “brand sounds”. The paper describes simulation and test methods which are employed to meet the requirements for optimized NVH behavior and sound design exemplary for Powertrain and driveline dynamics - NVH phenomena Hybrid powertrain development and Intake and exhaust noise reduction and sound engineering