Heavy duty diesel engine and EAS modelling and validation for an hardware-in-the-loop simulation system
Faced with the need to reduce development time and cost in view of additional system complexity driven by ever more stringent emission regulations, the hardware-in-the-loop simulation increasingly proves itself to be an advantageous tool not only in automotive companies but also in the off-road engine industry. The approach offers the possibility to analyze new engine control systems with fewer expensive engine dynamometer experiments and test drives. Thus, development cycles can be shortened and development costs reduced. This paper presents the development of an engine and EAS model, its deployment on a HiL system and its application to pre-calibrate the engine for different vehicle cycles. A 0D mean value approach was chosen to guarantee adequate real-time factors for the coupling between the models and the ECU. The main components of the airpath were parametrized according to data provided by the supplier and measurements.