Quote:
Originally Posted by christofoo
Agreed. But if you want to evaluate DCD or lean-burn relative affects have to be considered now.
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Nope.
The work consumed is proportional to the difference between the exhaust gas absolute pressure and the intake manifold absolute pressure. This is true in all cases - rich, lean, stoich, or no fuel at all. We call this pumping work, or pumping loss, if you will.
You're still not quite at the step where you're evaluating DCD or lean-burn, but you're close.