A Model of a Marine Two-Stroke Diesel Engine with EGR for Low Load Simulation
A mean value engine model of a two-stroke
marine diesel engine with EGR that is capable of simulating
during low load operation is developed. In order to be able to
perform low load simulations, a compressor model capable of
low speed extrapolation is also investigated and parameterized
for two different compressors. Moreover, a parameterization
procedure to get good parameters for both stationary and
dynamic simulations is described and applied. The model
is validated for two engine layouts of the same test engine
but with different turbocharger units. The simulation results
show a good agreement with the different measured signals,
including the oxygen content in the scavenging manifold.
Xavier Llamas and Lars Eriksson
2016
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