Trains

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Two photos of the same train driver, taken 26 years apart (lemmy.ml)

submitted 6 days ago by cypherpunks@lemmy.ml to c/trains@lemmy.ml

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The two trains pictured:

More info about (and photos of) the driver, Han Junjia:

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[–] leagman1@feddit.org 1 points 6 days ago (2 children)

He said it wrong, but isn't it implied that he meant the right thing? What's the correct term or principle? The one where we get 30-40% of the energy from fossil fuel in ICEs whereas an electric motor gets some 96% from the battery?

Yes, disclaimer here, disclaimer there, electricity has to be produced in order to be put into a battery. But didn't he mean the right thing?

[–] grue@lemmy.world 8 points 6 days ago

That's "energy efficiency," not "energy density."

[–] leftascenter@jlai.lu 4 points 6 days ago

ICE is closer to 20% gas to wheels. 30+ (reaching 50 on large diesel) is at the best efficient point, mainly when used for diesel-electric or pumps.

EV has 85% charging and 85% battery to wheels, overall 70+.