AVL VisioTomo

Thermodynamic process simulation defines a competitive target for combustion efficiency - why can't we just exploit it?

Any virtual optimization procedure defines the possible achievements of an engine combustion concept and it quite often also defines the design details necessary to meet the desired features. But it is one thing to model and optimize borderline behavior and another to trim all final details so that intrinsic fluctuations and imperfections do not compromise possible targets and still yield a robust combustion system. The key to meeting the optimum thermodynamic features in an SI engine is to provide appropriate flame propagation.
Combustion system design gives precise targets for flame propagation and it also identifies the influence of system components and actuators on combustion behavior. Combustion system development can now - as an extension of combustion pressure analysis - have direct insight into the effect of system variables on flame propagation:
Flame tomography provides the direct insight into the combustion chamber for the inspection of flame kernel growth, flame front propagation towards the cylinder liner walls and the burnout of endgas near the liner. Even unregular combustion events such as knock centers or hot spot ignition are precisely monitored.

Benefits at a glance