[HN Gopher] Hyundai Uni Wheel electric drive system could revolu...
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Hyundai Uni Wheel electric drive system could revolutionize EV
design
Author : yread
Score : 21 points
Date : 2023-11-30 10:19 UTC (12 hours ago)
(HTM) web link (www.autoblog.com)
(TXT) w3m dump (www.autoblog.com)
| thedrbrian wrote:
| So we could have a slightly bigger inside to the usual EV SUV.
| woo
| LargeWu wrote:
| A smaller battery would imply fewer resources required per
| vehicle, which will be important as demand for batteries
| increases.
| pornel wrote:
| Optimistically, we could have smaller cars without compromising
| on cabin space or storage.
|
| ...except when large SUVs are bought as a status symbol, or the
| race to drive the biggest tank on the road in defense from the
| other tanks or the road.
| neuralRiot wrote:
| Bigger inside than modern SUVs? What does people transport? How
| many people ride regularly? What size are people?
| 4death4 wrote:
| Two adults, two kids in car seats, and a dog. With that, even
| a mid-size SUV has no space for cargo. If you drive a sedan,
| you have to leave the dog at home.
| neuralRiot wrote:
| Maybe if they don't put a foot-wide console in the middle
| there would be more space for people and cargo.
| IlPeach wrote:
| That's why station wagons and vans exist. SUVs do not
| provide more space, they just occupy more (on top of being
| dangerous to others)
| redwall_hp wrote:
| The average number of occupants in a road vehicle is under
| two, yet they drive a massive tank. The typical pickup truck
| on the road also has an empty bed.
|
| Meanwhile, I can fit four people and some light cargo
| comfortably in my hatchback, or put all the seats down and
| carry more cargo than the typical SUV.
| igor47 wrote:
| As a drivetrain nerd, this is awesome!
| mech987987 wrote:
| More mass inside the wheel increases unsprung weight and worsens
| some ride/suspension characteristics of a vehicle-
|
| that being said the tradeoff might not be too bad in this case.
| pornel wrote:
| It's just reduction gears, not the motor, so hopefully it can
| be made light enough. Shame that their promo didn't say a word
| about the mass.
|
| Quad-motor all-wheel torque vectoring sounds awesome tho.
| sam_goody wrote:
| Is there some way that this or similar can be copied by all
| automakers, or is this all patented by Kia/Hyundai in such a way
| that most improvements are completely locked in?
| olyjohn wrote:
| Maybe I can't tell from the video, or maybe they're not working
| on this yet... But what about the steering wheels? Surely the
| driveshaft will have to have a joint on it on the front wheels in
| order for the front wheels to turn? Also this doesn't look like
| it would deal with camber changes which are needed to keep your
| tires flat on the road when cornering...
| toss1 wrote:
| I also notice that unsprung weight was not mentioned. The
| "Uniwheel" clearly has advantages over CV joints, but it also
| looks like a significant increase in unsprung weight.
|
| They also gloss over "splitting the motor". It looks like 4
| individual wheel motors, which would indeed be optimal for the
| torque vectoring that they mention.
|
| Still, looks like a very cool development. I hope it works out
| to be a real advance
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(page generated 2023-11-30 23:02 UTC)