The combination of more strict regulation for pollutant and CO2 emissions and the new
testing cycles, covering a wider range of transient conditions, makes very interesting the
development of predictive tools for engine design and pre-calibration. This paper describes
a new integrated Virtual Engine Model (VEMOD) that has been developed as a standalone
tool to simulate new standard testing cycles. The VEMOD is based on a wave-action model
that carries out the thermo-and fluid dynamics calculation of the gas in each part of the …