Energy-efficient control for hybrid electric passenger cars
Flanders Make has developed for and in close cooperation with Punch Powertrain an optimal model-based and numeric control system for an electric hybrid powertrain. Hybridisation guarantees a lower fuel consumption and reduced emissions and is realised by adding a secondary energy source to a conventional powertrain. However, a hybrid drivetrain is much more complex than a conventional one, which results in the failure of classical rule-based control strategies. A supervisory control strategy is more appropriate to determine at each moment which power source should provide how much power while driving.
The optimised control strategy lowers the fuel consumption up to 6% to 8% compared to the original rule-based control algorithm. Punch Powertrain is currently integrating an extended version of the developed control strategy in a prototype vehicle of a customer.
Punch Powertrain, DANA & Grammer Electronics
Development of safety-critical systems
For describing processes, Punch Powertrain makes use of a Rational Method Composer (RMC), which is IBM-software based on EPF (Eclipse Process Framework). The company indicated that it would be useful if the FLAME-content (Flanders Make user-friendly web interface for reference processes for functional safety) would be available in EPF/RMC to facilitate the integration of functional safety information. To this purpose, Flanders Make developed tools that are able to extract FLAME-content from the EPF-data structure and import it in EPF/RMC. Meanwhile, the first release is a fact and Punch Powertrain has already integrated the developed tools in their RMC-environment.
Grammer Electronics performed a GAP analysis and mapped the differences between their current processes and the ISO 25119 standard. This generated a Grammer-specific Flame, which represents the basis for further process descriptions.
DANA has used Flame and is now integrating their processes in Flame.