The design and optimization process of an internal combustion
engine is commonly performed using one-dimensional simulations.
The entire engine with all relevant components is considered
in one model. Since a number of parts need to be incorporated into
the complete model, simplifications are required to provide a solution
in reasonable time. With such simulations, optimization of
parameters, as e.g. the effect of valve timing [4] or injection timing
[5], can be effectively studied [6]. The efficiency of the exhaust port
from fluid dynamics perspective, is assessed by estimations of flow
and discharge coefficients. Such a flow or discharge coefficient can
be obtained by a so-called flow bench measurement. The flow
bench experiment consists of measuring the resultant mass flow
rate through the actual geometry for fixed pressure drops at fixed
valve lifts and laboratory conditions [7–9].