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cat_prophecy t1_ixn5fj6 wrote

Reply to comment by chandleya in This mining tractor developed by Caterpillar is completely battery-operated by redhatGizmo

Regenerative braking in a Prius is different from what you find on a battery electric car. They run the motor in reverse as a generator and the electric motors in a battery vehicle are much larger and more efficient than what’s available even in a PHEV.

BEVs can brake without touching the brake pedal. A Prius doesn’t have a large enough electric motor to do that.

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talontario t1_ixnbc8s wrote

It's still not that efficient. About 25% last I checked

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chandleya t1_ixnccw2 wrote

I mean I literally have a Tesla and it’s pretty insignificant. Not nothing, but also not much more than reclaiming some free losses.

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eras t1_ixppamk wrote

How often do you drive long stretches down the hill? In this video guy driving downhill seems to be getting around 250 Wh/km, which seems rather significant.

I'm sure you can fare even better if you purpose-build a machine for just going downhill and charging and then going uphill: you basically have an electric plant on wheels.

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