IAV and TESIS DYNAware Present Second-generation Thermodynamic Engine Simulation Software Package

3 July 2009

TESIS DYNAware and IAV Automotive Engineering presented the second generation of the thermodynamic real-time simulation software DYNA4 Engine Themos.

For the development of engine control units (ECUs), DYNA4 Engine Themos performs function development as well as hardware-in-the-loop (HIL) applications. The software can accurately represent the entire engine process, so the models can be used in the early stages of control unit function calibration.

DYNA4 Engine Themos is also suitable for the selection and optimization of engine components with the aim to reduce fuel consumption—or in combination with additional model components—for the simulation of hybrid vehicles. All models are fully implemented in Matlab/Simulink.

The fast-simulating engine models are part of the process-driven simulation environment DYNA4 and thus allow the continuous application of DYNA4 Engine Themos from function development to HIL tests in real-time.

We know from our experience in numerous engine and control unit engineering projects that function developers do not only depend on the correct behavior of controlled systems but a high precision representation of reality becomes more and more important. In the new DYNA4 Engine Themos we emphasized great importance to this aspect.

—Kurt Blumenröder, President and CEO at IAV

High accuracy is one important requirement for testing and development of modern ECUs, e. g. through simulation of the crank angle resolved cylinder pressure. In DYNA4 Engine Themos, a physical model of the combustion process and gas dynamics allows for effects of variable valve lift and timing, multiple injections, exhaust gas recirculation and boost pressure control as well as exhaust gas aftertreatment. All engine model versions are integrated in a simulation environment with driveline and driver models, so that typical driving cycles can be simulated realistically and then analyzed.