Quote:
Originally Posted by oil pan 4
Instead of trying to get around pumping losses why not switch to a cycle that benefits from filling the cylinders with as much air as possible?
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Making an assumption about what you are implying
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All else being equal a CI engine (idealized as constant pressure combustion) is less efficient than a SI engine (idealized as constant volume combustion).
Of course all is not equal and there remains potential in trying to minimise the losses in SI engines.