The automotive industry is going through a change process characterized by increasing electrification. Internal combustion engines and electric motors can be combined in various ways as an ideal complement to each other. Areas where the combustion engine shows weaknesses can be served with optimum results by the electric motor and vice versa. Powertrain technology and storage systems have to be adapted to the many boundary conditions. Finding the ideal configuration of all possible hybrid variations for each specific target market is a major challenge. This paper shows how to increase the share of virtual development in the product development process to reduce the costs for prototyping. It illustrates how the digital prototype can be used over and beyond pure powertrain simulation for subjective experience of the digital prototype as such, in order to take decisions regarding mass production already in the earliest development phase without real-life test mules. The idea of the InDrive Simulator was successfully implemented and validated in a typical vehicle with combustion engine. The VeLoDyn library component models underwent further development in the project and show a high level of detailing for near-reality starting and jolt-free driving of the vehicle. Shifting processes are also simulated realistically and with precision. Purely electric driving is also possible, as is alternating hybrid driving. One major issue after initial commissioning of InDrive consisted in improving pilot control of the acceleration controller and calibrating the control parameters. The test mule with combustion engine shows a delayed response behavior for system-inherent reasons caused by the response time and delayed torque build-up, making it extremely difficult to simulate a setpoint acceleration. Even so, in general validation indicated excellent reproduction of reality which in the end qualifies the whole InDrive simulation system to visualize the potential offered by virtual digital prototypes in InDrive in order to experience their driving performance in the earliest phase of development.


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