[gdvieira]

What am I doing wrong, or, what am I not thinking of correctly?

I have simulated one cylinder of an engine that I have experimental data for. I know the engines actual power output is 1,925 lb-ft of torque per cylinder and with an efficiency of 30% gives 6,416 lb-ft of indicated torque per cylinder.

When I use Converge's "Calculate Statistics" function, I get the readout showing that the area under the curve (Y area, the work per cycle) is 20,231 Nm (14,922 ft-lbs) for the experimental data and 19,902 Nm (14,679) for the simulated data.

I also have IMEP data per cylinder - using the IMEP data I calculate 14,973 ft-lbs of torque which aligns nicely with the PV diagram area and the simulation.

Now for the problem, why is my power output so drastically high compared to actual output? Converge and the IMEP data is saying each cylinder is making around 850 hp per cylinder but I also the hp per cylinder output is about 110 which doesn't correspond to the 30% efficiency.

So, again, what am I doing wrong, or, what am I not thinking of?