Real-World Driving Scenarios for Optimal System Design

In general, the kind of test case definition has a major impact on propulsion system development. Particularly, not only the standard test cases but also explicitly the limit ranges must be investigated, and distinctive profiles for real world driving cycles and boundary conditions must be defined and evaluated.
The provided data were used for the extensive simulation studies from the manuscript entitled: "HyFlex-ICE: Highly Flexible Internal Combustion Engines for Hybrid Vehicles " (doi:10.1007/978-3-658-42048-2_18).
For this research project, an investigation of the hybrid powertrain in realistic limiting ranges during vehicle life cycle to point out most challenging scenarios regarding the system limitations was assessed. Therefore, the four Real-World Driving Scenarios were derived and investigated in this project: (1) City Cycle, (2) Cross-Country Cycle, (3) German Highway Cycle, and (4) Mountain Drive Cycle. These driving scenarios capture all different challenges regarding the propulsion system. Besides aforementioned driving cycles, additional variation parameters are included for extensive powertrain testing to maximize coverage of real-world driving conditions. This ensures that operating points are approached that cannot be investigated in an analysis using standardized test procedures, e.g., WLTC. The examined and investigated variation parameters for real-world driving conditions are: (1) trailer, (2) cabin climatization, (3) initial state of charge, (4) ambient and cabin soak temperatures, (5) traffic conditions, (6) cabin occupants, and (7) driver type; resulting in a large matrix of results. Against this background, the speed profiles are provided over distance, as the speed over time profile changes depending on the choice of boundary conditions.
By providing these Real-World Driving Scenarios to the academic and industrial community the authors aim to further support the frontloading and virtual propulsion system development. Although these driving cycles were used for the design of a hybrid vehicle (PHEV), they can of course be used for the development of other propulsion concepts such as ICEVs, xHEVs, BEVs, or FCEVs.