Car motors will disappear ? into the wheels: Siemens VDO starts eCorner development
I think there may be a Geo or 2 on here that could have a simpler, yet similar solution in their future.
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Not new, but a similar idea:
https://www.e-traction.com/TheWheel.htm and https://media.mitsubishi-motors.com/p...etail1269.html |
Cool, but...
The unsprung weight factor doesn't seem to be addressed in this application. If a heavy electric motor is on the unsprung side of the suspension, driving dynamics, turning, and handling could suffer. I know it's in its infancy, but I'm excited to see what develops, and if it works. The traditional, independent half-shaft/CV joint seems to get the power into a lighter wheel config. I'm sure they have thought of this and should be working on it.
RH77 |
I agree about the unsprung weight concern (I've been thinking about that problem with electric direct drive since oh, about 1976).
I think with alloy wheels, permanent magnet rotors, aluminum wire, ironless stator electromagnets, and an aluminum hub/knuckle - the weight could be reduced considerably. Of course for high performance handling, inboard mounted motors with cv/drive shafts may be inevitable for now. An active/preemptive suspension like Bose proposed in 2004 (again not too new) could make a big difference too. A friend who works at Bose said he saw a demo of a car driving over a huge curb: it just 'melted' over it like it wasn't even there. So cool. |
Naaaa just run on big balloon tires and the rubber will absorb the impact. Just thinking about my electric scooter - instead of designing a better suspension I think I will get some big tires instead.
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