Gas flow dyno testing 
Analysing gas flows
Measuring, calculating, evaluating, modifying and optimising the gas flow
To evaluate the inlet and outlet systems and the need for optimisation, we perform exhaust emission measurements during steady state dyno testing.
By analysing given data, we calculate the delivery ratio, trapping efficiency and charging efficiency.
After modifications, we can study how the whole rpm-range, hopefully, is moved to a more improved position.
Advanced transducers can be used for specifically detailed measurements at the transfer port, inlet port and crankcase. It is also possible under transient conditions.
From these parameters, we can evaluate how the IMEP for each oncoming combustion will be affected by the previous gas exchange. It can be of great help in understanding how the fuel and ignition systems should be optimised depending on the cycle to cycle variations.