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Lamborghini Unveils a Self-Healing Electric Supercar Concept

bloomberg.com

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Re: Lamborghini Unveils a Self-Healing Electric Supercar Concept

#61

Post by hwillis »

d--b wrote: post #31

> 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...

Something on the order of 300 Wh/1-2 MJ, yeah. It would cause a large fire or a small explosion. That's around equivalent to a couple hand grenades.

Re: Lamborghini Unveils a Self-Healing Electric Supercar Concept

#62

Post by mperham »

stoev wrote: post #43
LeonM wrote: post #6

> 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…

> Even electric motorcycles with 30-40 bhp rely on water cooling, let alone a car 20 times the weight.

FYI my Zero SR motorcycle, which has 70+hp, uses passive cooling only.

Re: Lamborghini Unveils a Self-Healing Electric Supercar Concept

#63

Post by mtgx »

LeonM wrote: post #6

> 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…

I think 100 kWh batteries and dual-motors should become standard in all EVs within the next 10 years. The second motor should be of huge benefit in snow for only like a $1,000 more (10 years from now).

Four motors will probably offer diminishing returns for "passenger cars", but sure I could see them become standard in higher-end cars, mainly because of that cool factor as well as the performance/acceleration one.

For buses, trucks, semis, tractors, and whatnot, four or more motors will likely be a requirement.

Re: Lamborghini Unveils a Self-Healing Electric Supercar Concept

#64

Post by mtgx »

usaphp wrote: post #50
d--b wrote: post #31

> 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...

> That sounds somewhat dangerous... Good to see Lamborghini going back to their roots )

That car is like fire! ... literally.

Re: Lamborghini Unveils a Self-Healing Electric Supercar Concept

#65

Post by mtgx »

reitzensteinm wrote: post #7
mtgx wrote: post #5

Earlier quoted context omitted.

Tesla's competitors are so great at making electric cars...in theory.

So is Tesla :-)

At least Tesla has had Model S, 5-8 years before everyone else.

Also, Model 3 is already shipping. So it actually exists. Unlike this car. It's just that Tesla can't produce as many as it wanted due to certain battery production bottlenecks (so not even an issue with the rest of the car).

Re: Lamborghini Unveils a Self-Healing Electric Supercar Concept

#66

Post by r00fus »

mtgx wrote: post #63
LeonM wrote: post #6

> 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…

I think 100 kWh batteries and dual-motors should become standard in all EVs within the next 10 years. The second motor should be of huge benefit in snow for only like a $1,000 more (10 years from now). Four motors will probably offer diminishing returns for "passenger cars", but sure I could see them become standard in higher-end cars, mainly because of that cool factor as well as the performance/acceleration one. Fo…

Why do you think 100kWh batteries will become standard within 10 years? Most cars could do fine with 200mi which would really require about 50-60kWh max - assuming a standard sedan and not a sports car.

Tesla is really on the vanguard here. I wouldn't expect the highest-end Tesla configuration to be standard until at least 10 years later unless China or other countries (current US administration/congress will definitely not) really push the ball forward from a regulation/support standpoint.

Re: Lamborghini Unveils a Self-Healing Electric Supercar Concept

#67

Post by johnbrodie »

roman_savchuk wrote: post #34
agumonkey wrote: post #22

Earlier 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/

At least on a performance vehicle, that's still far too heavy IMO. 40ish lbs? The (cheap) wheels on my Miata are 11 lbs, without any exotic materials or crazy engineering. Almost quadrupling the unsprung mass is a hard sell performance-wise.

Re: Lamborghini Unveils a Self-Healing Electric Supercar Concept

#69

Post by jjawssd »

LeonM wrote: post #6

> 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…

My money is on electric motors proximally mounted to the wheels which are in turn connected with constant velocity joints. This also opens up the avenue for four wheel steering and increased maneuverability if all four wheels could be turned arbitrarily while power is modulated to each wheel individually.

Re: Lamborghini Unveils a Self-Healing Electric Supercar Concept

#70

Post by retailbuyout »

hwillis wrote: post #59
stoev wrote: post #43

Earlier quoted context omitted.

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…

I’m car illiterate. Why is the braking power proportional to the engine rather than mass or drag or something? Or did i misunderstand?
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