The Combustion engine analysis module offers multiple output calculations. This are the definitions:

  • Current value: values calculated from the current pressure curve, for each cylinder individually calculated from the average
  • Running average: values calculated from the average pressure curve of the past n cycles, for each cylinder individually (where n is defined in pressure setup) 
  • Overall average: values calculated from the average pressure curve of all cycles since start of measurement, for each cylinder individually  
  • Cylinder average: average of all values since start of the measurement, for each cylinder individually
  • Engine average: average of current values across all cylinders 


Note the difference between current value, running average, and overall average from cylinder average and engine average: current value, running average, and overall average all first construct the pressure curve from the past however many cycles, and then calculate the output values with those curves as input. On the other hand, cylinder average and engine average don't construct pressure curves, but instead take the average of the already calculated values based on current value's pressure curve. This is also why cylinder average and engine average calculations don't have resampled curves as output.