Technical Paper
Crank-Angle Resolved Real-Time Engine Simulation –Integrated Simulation Tool Chain from Office to Testbed
2009-04-20
2009-01-0589
The present work introduces a real-time capable crank-angle resolved engine model to test control strategies offline and online on Hardware-in-the-Loop environments. In order to follow a consistent modeling tool chain, the real-time model is derived from a detailed 1D cycle simulation and gas exchange model. Identical model parameters, applied in both approaches for the major engine components, cylinder and turbo-charger, help avoid time consuming re-parameterization and validation of isolated models used in different phases of the engine development process. Appropriate numerical schemes are applied to associate accuracy requirements with computational time constraints. The real-time model is validated by comparing cylinder traces with results gained from the 1D model for a turbo-charged diesel engine. The transient responses of both models are compared during vehicle driving conditions.