As we know in the last example how to calculate the temperature at the end of the power stroke. We can calculate heat out   of the exhaust system by this formula.

Heat out = CV × (Temperature at the end of the power stroke – Temperature in).

Example:

Heat out = cv × (Temperature at the end of the power stroke – Temperature in)

Heat out = 0,718×( 750 – 288 )

Heat out = 313 kj/kg