How superlongstroke related to reduction in sfoc?

If thermal efficiency of an engine is higher then sfoc will be low.

Thermal efficiency ,simply for a Diesel engine is heat input to the work done.

Or it is T2/T1 ,

T2 :- max temp in cycle

T1:- min temp in cycle.

So,

If stroke length is more

Higher the peak pressure, more fuel and relatively more temp (T2)

And if T1 ( scavenge temp) is considered same

Then super long stroke have high thermal efficiency and low sfoc.

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