Post4T - The post processing software
RPM Based Output.
Selecting to display "Performance and Efficiency Plots"
from the main menu opens the following dialog box:
Once a file has been selected the following results are available:
Simulated engine rpm
Average engine power over the last three cycles (kW)
The engine torque related to P-av.(Nm)
Average temperature in center of exhaust (ºC)
Power per cylinder (kW)
Indicated mean effective pressure per cylinder (bar)
Brake mean effective pressure per cylinder (bar)
Friction mean effective pressure (bar)
Delivery ratio per cylinder
Purity of the mixture in the cylinder at exhaust port closure
Purity of the mixture in the cylinder at transfer port closure
Trapping efficiency per cylinder
Charging efficiency per cylinder
Brake specific fuel consumption per cylinder (kg/kWh)
Average maximum cylinder temperature per cylinder (ºC)
Maximum unburned mixture temperature per cylinder (ºC)
Degrees after TDC where maximum cylinder pressure occurs per cylinder
Ignition timing (ºBTDC)
The user prescribed delay period in degrees (deg)
The user prescribed combustion duration (burn period) in degrees (deg)
Trapped Air/fuel ratio
- VibeDelay The calculated delay
period for a turbulent combustion model)
- VibeDurat The calculated burn period
for a turbulent combustion mode)
The calculated Vibe A value for a turbulent combustion model
The calculated Vibe M value for a turbulent combustion model
If the engine is turbocharged the following values are included:
The simulated boost pressure (bar guage)
The simulated back pressure (bar guage)
The ratio between the boost pressure and the back pressure.
The simulated turbine inlet temperature (ºC)
This shows the predicted power curve
for the Mini 1000cc engine.
Power for Cylinder 3 and 4
To study the effect of the air stealing
in the siamesed inlet ports the individual cylinder's power is plotted. It clearly shows that
cylinder 3 is strangled.
Delivery Ratio for Cylinder 3 and 4
To see if it really is the "air stealing"
effect the delivery ratio for the two cylinders is displayed. It clearly shows that cylinder 4
gets filled a lot better than cylinder 3 and therefor makes more power.
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