Is Vehicle System Integration Exclusively Reserved for Proving Ground Test? -Maneuver Based Testing Using a Highly Dynamic Vehicle-in-the Loop Test Bed

摘要

New intelligent transmission concepts such as also electrified and hybrid drive systems offer the development engineer today many ways to tune the system. Drivability. NVH behaviour and driving comfort must be considered here as well as the fuel and the exhaust emissions. While the coordination of consumption, exhaust and performance today already largely on benches takes place, drivability and comfort optimization are largely reserved for the test on the road. The test on the road often offers the first opportunity to test the overall system of all components installed in the vehicle and to validate their interaction with each other and to optimize. From the moment in the development of this integral test takes place naturally very late, so that this discovered problems lead to very high cost of change or even a postponement of the planned appointment of SOP. Together with the high cost of prototype vehicles and test crew, this leads to the consideration in how far road tests can be brought forward to a suitable test bench. New approaches and tools must be found to integrate proving ground tests directly into power train test beds. In order to manage these trends the consistency of tools in simulation will be the key. Simulation and test bed need to be interlinked in a way that there is best use of available data for each development step, creating scalable models based on physical and empirical data. Highly dynamic power train test beds allow frontloading; the relocation of in-vehicle tests into an environment with a higher share of simulation. This paper describes on the one hand the hardware requirements to a highly dynamic power train test bed and on the other hand the capability of the simulation models. Both together enable the new testing philosophy "Maneuver Based Testing".