Co-Simulation of Multi-Domain Engine and its Integrated Control for Transient Driving Cycles

IFAC-PapersOnLine, vol. 53, pp. 13982–13987

Abstract

Virtualization of powertrain components allows the front-loading of conventional vehicle calibration and validation tasks to Model-in-the-Loop (MiL) and Hardware-in-the-Loop (HiL) simulations. This approach is based on the utilization of highly accurate physics-based powertrain models that enable a seamless system validation using virtual testing methods in order to ensure cost-effective powertrain development by reducing hardware tests. Proper modelling methods target the optimum between parametrization effort, model accuracy and required computing power to grant the real-time (RT) capability of the simulation, which is mandatory for HiL simulation. In this paper two validated modelling approaches and their implementation into a MiL environment are introduced and discussed. The approaches are the MATLAB/Simulink based Mean Value Engine Model (MVEM) and the Fast-Running Modelling (FRM) of GT-Power. After the models integration in a Simulink frame, the responses of a model-based control unit with the two simulation models were evaluated using real experimental data. In transient cycles, the controller showed a different reaction to the feedback signals of the two engine models. The purposes of the conducted investigation are mainly to evaluate strong and weak points of both approaches and to propose the best-practice modelling approaches for virtual calibration and validation. A comparative rating shows the main advantage of the MVEM in the flexibility for HiL-based systems and the model training effort for the FRM.

Authors 7

1. Mario Picerno corresponding Aachen Mechatronic Systems for Combustion Engines

   RWTH Aachen University

   Affiliation as printed

   Mechatronic Systems for Combustion Engines, RWTH Aachen University, Aachen, Germany

2. Sung-Yong Lee corresponding Aachen Mechatronic Systems for Combustion Engines

   RWTH Aachen University

   Affiliation as printed

   Mechatronic Systems for Combustion Engines, RWTH Aachen University, Aachen, Germany

3. Joschka Schaub corresponding Aachen FEV Europe GmbH

   FEV (Germany)

   Affiliation as printed

   FEV Europe GmbH, Aachen, Germany

4. Markus Ehrly corresponding Aachen FEV Europe GmbH

   FEV (Germany)

   Affiliation as printed

   FEV Europe GmbH, Aachen, Germany

5. Federico Millo corresponding

   Politecnico di Torino

   Affiliation as printed

   Politecnico di Torino, Turin, Italy

6. Mauro Scassa corresponding
   Affiliation as printed

   FEV Italia s.r.l., Turin, Italy

7. Jakob Andert corresponding Aachen Mechatronic Systems for Combustion Engines

   RWTH Aachen University

   Affiliation as printed

   Mechatronic Systems for Combustion Engines, RWTH Aachen University, Aachen, Germany