( part a only I don't understand how you know from this question that it is a constant pressure process.
I thought it is a polytropic process. So it will have a pVγ curve. I was drawing a pV curve.
The answer is a straight line parallel to x- axis.
My question: How do I know from...
Is it possible to explain it much simpler please? ( I am very weak in physics.)
So basically,
What I know so far is (in simple steps)
1) In a box, air is compressed.
2) Fuel is added
so
3) ignites
4) and produce work
if compression ratio goes up, efficiency...
Why does the efficiency go up with compression ratio and the cutoff ratio down?
(I don't really understand the physics/thermodynamics behind it
Thank you