This would be really fascinating if the technology was there and they had a working prototype. What they actually have is a bag of promises and a little graphic design.
Lamborghini Unveils a Self-Healing Electric Supercar Concept
51–60 of 92 posts
Re: Lamborghini Unveils a Self-Healing Electric Supercar Concept
#52This is a concept and the article mentions that many of the technologies do not yet exist.
There are many different shades of "concept"... This particular case seems to be very close to showing off an amazing idea of how sleekly warp nacelles could be integrated with gull wing doors. The Ford Nucleon was closer to implementation than this.
Re: Lamborghini Unveils a Self-Healing Electric Supercar Concept
#53Earlier quoted context omitted.
Every time the idea comes up, "unsprung mass" is thrown like a pavlovian reflex. I'm curious about what they have in mind for solving the constraints. They aren't the less experienced people around.
Large outrunner motors like Emrax aren't much heavier than typical cast alloy wheels. Assuming wheel-motor eliminates disc brake components (sounds scary, right?) assembly will probably be even lighter. http://emrax.com/products/emrax-268/
Thanks a ton for that
Re: Lamborghini Unveils a Self-Healing Electric Supercar Concept
#54> Supercapacitors store energy physically and don’t generate the heat of lithium-ions, but as of yet they don’t offer as much power. This probably should read "don't offer as much energy". Almost every mainstream media article about electric cars mixes up these two concepts, sigh.
No they actually mean power. Supercapacitors can energy faster than lithium batteries can(more power). While batteries have power densities hundreds of watts per kilogram, supercapacitors can release thousands of watts per kilogram. Now if we ignore the bullshit with carbon fiber supercapacitors it sounds like what lambroghini really wants is an energy storage system with more energy density and power density than we…
> Supercapacitors can energy faster than lithium batteries can(more power).
You accidentally a verb.
Re: Lamborghini Unveils a Self-Healing Electric Supercar Concept
#55Just what kind of roads is this kind of car made to drive on? I mean the clearance.
Re: Lamborghini Unveils a Self-Healing Electric Supercar Concept
#56> Lamborghini also intends to make the supercapacitors out of carbon fiber panels that can be used to form the body of the car—so the Terzo Millennio draws energy from its own body. In other words: the car itself is the battery. So does that mean that if you happen to have an accident, there is a chance that a good chunk of your battery gets short circuited? That sounds somewhat dangerous...
Yeah, and I bet that carbon fiber burns real nice.
Don’t forget that it’s functionally equivalent to asbestos when it come to inducing cancer in the lungs. It doesn’t break down. Little carbon fibers just sit there and disturb the lung lining.
Re: Lamborghini Unveils a Self-Healing Electric Supercar Concept
#57Earlier quoted context omitted.
Yeah, and I bet that carbon fiber burns real nice.
Don’t forget that it’s functionally equivalent to asbestos when it come to inducing cancer in the lungs. It doesn’t break down. Little carbon fibers just sit there and disturb the lung lining.
Yep, buy a container of carbon nanotubes and you can't move for warnings about wearing a mask and wearing gloves. 5g of SWNTs, and about 5kg of paper with warnings on :)
Re: Lamborghini Unveils a Self-Healing Electric Supercar Concept
#58Earlier quoted context omitted.
Looking at those wheels, and all the fancy material science speculation, they probably expect to use the wheel structure as the motor. If the wheels themselves are acting as coils, then there isn't as much extra unsprung mass.
The wheels themselves can not act as coils because of eddy currents.
and the body can't act as a giant capacitor because it would guarantee the car would explode spectacularly if it ever hit something with enough force to compromise the body panels :-)
I think some designer pooped, err popped, out this 'look' and said "Ohh, I love how futuristic this looks!" let's have a thought shower on how many amazing technologies it might contain without constraining ourselves to reality.
Generally such exercises are useful for helping engineers think outside their generally conservative and self imposed parameters. Even when the actual concept is not really a viable design.
Re: Lamborghini Unveils a Self-Healing Electric Supercar Concept
#59> the company will develop in-wheel electric motors, which would eliminate the need for a single large engine. A 'single large engine' is only needed in ICE cars, electric vehicles have a 'small' motor, and can easily have multiple motors. It's already being done by Tesla and Rimac. To my knowledge, an 'in wheel' motor would not be desirable due to unsprung mass, so a motor on the chassis connected to the wheel with…
Also, an in-wheel electrict motor would: 1. suffer a lot more from wear and tear than a motor mounted to the chassis. 2. restrain the amount of space available for brakes. While it would be reasonable to say that a small city car could forego its rear brakes and use electric motors instead to deccelerate, coupled with brakes at the front, a four wheel drive supercar with four electric motors would have no chance rely…
A lot more wear- it's seriously nontrivial to make large flexing electrical connectors that will last through the stress cycles of loading and unloading the wheel. It also makes cooling waaaaaay more difficult for high power motors. Liquid is obviously challenging but air is also a huge problem- you run out of space for sinking heat. There's lots of air in that area but it's very, very challenging to prevent it from becoming turbulent and stagnant. Wheels are a big aero drag and it's a very hard choice to add more drag there.
Just to reinforce the brakes message: The braking power on the Bugatti Veyron is in excess of 1.1 megawatts. Braking requires 30% more power than accelerating.
>be very difficult to connect to a powerful cooling system. Even electric motorcycles with 30-40 bhp rely on water cooling, let alone a car 20 times the weight.
This is true- Teslas besides the model 3 and several bikes use liquid cooling. I want to point out that this is not a necessity for motors Previous motors were either inefficient at high power (induction motors) or inefficient at low power (PM motors)- in order to reach low-power efficiency they had to be undersized and required extreme cooling to reach high power.
Re: Lamborghini Unveils a Self-Healing Electric Supercar Concept
#60Earlier quoted context omitted.
That design doesn't look like it has any springs anyway, so the whole thing is a giant unsprung mass, :p
Every time the idea comes up, "unsprung mass" is thrown like a pavlovian reflex. I'm curious about what they have in mind for solving the constraints. They aren't the less experienced people around.
They probably have nothing in mind. This isn't something they're planning to make so much as something that would be cool if the technology existed. The fact that in-wheel motors are put on the same level as "detecting wear and damage", "micro-channels containing 'healing chemistries'", and "supercapacitors out of carbon fiber panels that can be used to form the body of the car" gives an indication of how likely this whole affair is.