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Old 04-18-2012, 06:31 PM   #83 (permalink)
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Originally Posted by serialk11r View Post
Peak efficiencies on a lot of engines is getting to the high 30s(%), or around 230g/kwh, but that occurs at unreasonably high load levels for highway cruising.
I guess I've been spoiled ... although as you suggest the peak efficiency point is at higher loads and RPMs ... my ICE has a fairly wide ~35% efficiency point that fits well for highway cruising in a window a bit under 30% load to a bit over 80% load.
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