Concurrent WAVE/Matlab Simulink Simulation Applied to HSDI Diesel ECU Calibration

This paper describes an application of an engine cycle simulation code (WAVE) in co-simulation with a control and dynamics modelling package (Matlab Simulink) to provide total vehicle system modelling capability. The models presented form the basis of an Analytical Calibration CAE toolset allowing the definition of many electronic control unit (ECU) calibration parameters in the CAE environment. Results are presented for a medium capacity, automotive high speed direct injection (HSDI) turbo-charged diesel, fitted with a variable geometry turbine (VGT). These show a high predictive accuracy for engine mass air flow (MAF) and intake manifold pressure (MAP) during transient conditions. The aim of the technique is to reduce the amount of dynamometer-based and vehicle calibration and this is demonstrated by analytically calibrating the ECU to improve vehicle performance.