Quote:
Originally Posted by aerohead
I'm not current on Diesels, as I've lost interest in internal combustion, but the last time I looked, the most efficient diesels were in ocean-going cargo ships.
The one reported, was manufactured by HITACHI, of Japan, which ran on bunker fuel, was compound-turbocharged, and operated at a maximum, 130-rpm.
The pistons are as tall as an adult male.
The brake thermal efficiency is 42% ( 58% of the thermal energy is lost ).
The ships can stay at sea for 3-months per 'tank.'
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These engines would have already undergone intense investigation for combustion efficiency, and without exacting specificity, the claims of a 20% improvement in mpg would require third-party laboratories corroborating the same extraordinary evidence.
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My initial reaction to the claim is that it is highly dubious!
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Ships also use the waste heat in exhaust ( and cooling system?) to turn steam engines/turbines, greatly increasing the efficiency per liter of fuel burned.
My Initial reaction is the same, but I still haven't researched this much at all.
The ceramic coating on top and low friction coating on the skirts further muddy the results.
I am interested in what you think might happen to the flame front etc when encountering said dimples..?