Revolution in Motion | Gruber Motors
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- čas přidán 9. 02. 2023
- Wheel-powered motors, also known as in-wheel motors or hub motors, are electric motors that are integrated directly into the wheels of a vehicle.
This video discusses advantages, and proposes this may just be the next revolution in drive train technology.
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#aptera #grubermotors #electricvehicle #in-wheel #in-wheelmotors #elaphe #ev #proteon #solo #electrameccanica - Zábava
It strikes me that in-wheel motors would be the perfect solution for any company wanting to create a universal EV conversion kit that can be fitted to any ICE car as a means of speeding up electrification of our vehicle fleet. You could fit a couple of in-wheel motors either at the front or rear of a car, or all four if you want to go AWD, and then just fill the engine compartment and fuel tank cavity with batteries after removing all the ICE gear. The fact that you can eliminate the engine, transmission and axles from the engine compartment means more room for batteries and therefore more range and efficiency from an EV conversion. As the cost of batteries continues to come down, EV conversions are going to become a great way for people to take an existing vehicle with plenty of miles left in it, and replace a combustion engine that is eventually going to wear out and give trouble, with electric motors and batteries (along with controllers, inverters, chargers etc) to give you a 21st century sustainable energy vehicle that will comply with any future environmental regulations likely to be introduced.
Interesting idea. Not sure about added unsprung weight. Steering geometry is going to take some engineering. While turning, outside wheels have higher surface feet per minute and constantly changing depending on the radius of the turn. Motors in the rear, same thing. More software control of the motor hubs. The braking part would be easy. You can stop a lot of mass with the VFD drives. We did it at work and it was a lot more weight than a vehicle. You could have a lot less wheel slippage. A very controlled stop.
This concept has been tried before, I don't think the software was up to speed though.
There is just one problem with having in hub electric motors especially on the front axle to drive the car and that is there is horrendous centrifugal forces that will whack the car out of alignment in turns,That is to say it will not actually turn as well as a car that has half shafts driving the hubs.
in rear wheel drive cars too?
Vibrations shock and giroscopic effect and weight, price are the killer of this tech.....
This dream cost in the past a lot of money to hydro Québec, pionnier in this tech...
Nice dream
The electric Volvo C30 prototype had also inwheel-motors - it is a shame it was never produced.
Thanks a lot for this video!
Where do the brakes go? I don't see how hub motors can reduce unsprung weight. How is an entire motor lighter than a half shaft? Wheels are a pretty rough environment in terms of dirt, water, and vibration. It doesn't seem like a great place for a motor.
Thanks for this comment. It saved me the time of typing it out. I would add one detail however, if the motor actually has the torque to be able to drive the wheel, it will also be able to slow down the wheel as well. It will not however be able to bring it to a complete stop as effectively as a set of friction breaks. If you just have rear wheels that are powered you can use your front brakes to do the last bit of breaking.
Exactly. Not a good idea at all except for simple vehicles like maybe the Aptera or motorcycles.
@@Kabab Most of the braking is done by the front wheels in every car, it's like 80%. That is why front discs are so much larger than rear ones. It's bc when you break the weight of the vehicle shifts forwards and thus the front wheels have more grip, better grip = better braking.
@@giovannifoulmouth7205 that doesn't impact motor breaking or regen breaking.
Look at the Lordstown Endurance. It works.
One person shared me this idea 3 years back.... now i see it in reality..
Such nice presentation not dure why likes are so less...
Wheel motors rock. Why do you always wear sunglasses in your podcasts etc? I thought only rock and roll rockstars wore sunglasses fro interviews. LOL
Where can we buy an in wheel motor kit? Its a perfect solution to convert ICE care into hibrids and later into full electric!
the gear of inwheel motor can use the three gear one drive outer rim one drive inner shaft and ine drive the middle or both so electric inertia switch take torque or speed to automatically switch among gear is best
The best and IMHO most obvious use case for solutions like potrean are electric conversions of ICE cars. But sadly it’s not on the market for normal people.
Available in the US????
Slow-moving vehicles, but need a planetary gearset to get the torque. The advantage would be for converting existing vehicles like tractors to electric drive. Faster vehicles would destroy the motor over time.
ever heard of escooters? they had "wheel motors" for ages!
Elaphe is the manufacturer of the in-wheel motors that Aptera is using. Good rundown.
best to add hydride to regular cars by add on 4 wheels then keep regular cars
ZF makes something like this for commercial truck/coach applications. We use it on our center axle on our 60” bus fleet. It’s cool tech.
Wheel powered motors, sound weird, isn't it better in wheel motor, or motor powered wheels
It really isn't that hard using Electric motor, reduction box and CVs. Keeps unsprung mass to a minimum. Cool sunglases btw.
What about unsprung weight? How can that be dealt?
I was thinking the same thing. for vehicles that will see a high frequency damper cycles will suffer for sure. but I think for larger and/or slower moving vehicles it would make sense. Where I think i see the most benefit is rock crawlers since you no longer have to worry about exceeding the max angle of cv joints on the driveshafts. It would allow for much more suspension travel and allow for a lot more ground clearance. I think the quickest and easiest way to mitigate the upwards momentum of the wheel and motor would be to have two way dampers that bias more rebound speed to help keep the wheels on the ground more. That and making the wheels much lighter (hooray for mass produced cf wheels)
The weight of the motors is just over 50 lbs in the Aptera versions, well within the ability of standard suspensions to control with sufficient authority.
@@n.brucenelson5920 while the wheels I have are largish the rim itself is fairly light for its size (18lbs for 18x9.5) and with a tire(255/40/18), its just a bit under 50lbs. Adding another 50lbs will be significant. Around a track a floating rotor that weighs 2lbs less than a one piece rotor made difference of 2+ seconds. I can imagine what adding 25x that would do to overall handling.
@@joshuaszeto Aptera rides on 16" wheels, and the brakes can be very light due to the fact that most of the braking power comes from regeneration. Roush Performance has designed the suspension. There are independent studies going back over a decade that say that such differences can be accommodated with conventional suspension tuning. You can find them using a google search. Like everything, there are engineering tradeoffs to be managed.
Thx Gruber Motors for the salient explanation!
This man had 1 minute of dialogue stretched to 7 minutes.
Doesn’t Rivian use in wheel motors?
You’d think! They’re actually all on the axles. Two in the front and two in the back on the quad motor vehicles, and one front/back in the new dual motor vehicles.
You may be thinking of Lordstown.
nem ertem miert tervezunk hatrafele mart mint a fekdob nincs ojan hatasos mint a tarcsafek miert tervezik a hub/penkek /agy / motorokat a regi teknologiaval ha ez mart bevalt miert nem ujjabbon gondolkodunk
tion
I dont like this idea , if you get in an accident your motor will be destroyed easier
It is much less likely for an accident to cause a the motor to intrude into the passenger compartment. It should be safer in an accident.
@@n.brucenelson5920 Maybe if you put a luggage on your frunk it will be the same? but I told it about the cost of the thing and it is more likely to hit your wheel than your whole engine
@@Ydooo Aptera has already tested hitting the wheels against curbs at speed, hard enough to pop the tires off. Nothing happened to the wheel motors. The wheels and tires are comparatively less expensive to replace, while making passengers safer. There will be more proof of this when the FMVSS Part 200 crash tests are conducted and the ratings published, once they have production intent vehicles to validate.
Hydro Quebec made hub motors before Tesla was a company. Nothing new
He literally mentioned they are not new.
In fact the lohner-Porsche hybrid had wheel hub motors 44 years before Hydro Quebec was even founded.
@Wolfgang Preier don't know, maybe technology wasn't advanced enough? Doesn't the Rivian use hub motors
@@enfamy_OG was it ac induction though? were a bit further in tech. As for reduction unprung weight I'd like to see that. It was always the achille's heel so I dont see when it went from a con to a pro. Any idea who first solved that ?
Something about an 80yr old dude trying to look 25 wearing shades and a Google beanie indoors selling a product doesn’t sit right! Nothing about this dude yells professional!
Attire. Cyllie