Abstract
Keywords: Vehicle Thermal Management System, Comprehensive Vehicle Model, Transient Cooling Simulation, Automation of Model Calibration
Based on an example, an integrative modelling approach describing the thermal behaviour of the engine and the vehicle is presented. The comprehensive vehicle model consists of all relevant subsystems (cooling system, lubrication system, engine, drive train, etc.) while its main existing interdependencies are depicted and taken into consideration accordingly. For the verification of the single subsystems experimental measurements on a vehicle dynamometer were used. The comprehensive vehicle model is verified with the measurement data of a real-world drive cycle. The measurement data of the key parameters such as coolant temperatures, engine speed and fuel consumption were compared with simulation data, in order to assess the degree of achievable accuracy of the simulation model. The manual calibration of every single model is a long and time consuming process. Therefore an automated process for the model calibration has been developed and introduced, in order to minimize costs and development times. A possibility to realize this by using the potentials of genetic optimizers is described in this paper.