Goodyear Shows Concept Tires That Produce Electricity

[ahhming]

At the Geneva Motor Show , Goodyear introduced the BHO3, a tire that uses heat produced to generate electricity, this will greatly improve the driving distances of EVs.

Source:

http://www.prnewswire.com/news-releases/goodyear-concept-tires-offer-a-glimpse-of-the-future-300044209.html

[TheKDub]

Thats pretty awesome

[ManWithBeard1990]

Not impressed.

[Ostwind]

How do you plug your phone into it when it's spinning?

[Guest]

I doubt it would generate much electricity.

[Thorium19]

It probably won't produce that much energy when moving, as the heat generated by friction on car tyres is generally pretty low, unless you're in an F1 car. However, the standing heat absorbtion is a good idea, and that's where most energy will come from, either from a hot road surface or from the suns heat, not from frictionv generated heat. It's a nice concept, but it's more of a gimmicky idea that would most likely suit use in an F1 car for the ERS system than a conventional road car.

[bcredeur97]

looks like grip was sacrificed tremendously for this. Barely any tread to displace water so I wouldnt use this in the rain. 

 

And I highly doubt its very sticky...

[LancerBG]

I'd settle for tires that hold air pressure for an extended amount of time.  Not really the type of tech I am looking for from my tire company. 

[LancerBG]

looks like grip was sacrificed tremendously for this. Barely any tread to displace water so I wouldnt use this in the rain. 

 

And I highly doubt its very sticky...

 

Good point however it's always a good idea to have winter tires and summer tires. 

[insayan]

looks like grip was sacrificed tremendously for this. Barely any tread to displace water so I wouldnt use this in the rain. 

 

And I highly doubt its very sticky...

They're just 3d renders, probably just proof of concept. 

[bcredeur97]

Good point however it's always a good idea to have winter tires and summer tires. 

i live in louisiana. ice/sleet/snow is very rare. its also very rare that is drops below 32F/0C. 

 

We generally run all-seasons on our cars here or summer tires all year around. Dont see a need for winter tires here. It does rain a lot though usually during spring and summer.

[geogga]

A car that runs on electricity...get it?

[euniqe]

don't understand why they don't just put heat-electricity converters inside all four wheel arches or inside the actual rim that takes both heat from the brakes AND from the tyres. This will generate next to no electricity as all, as tyres are designed to be as friction-free as possible while there is no slip in longitudinal loads to save fuel. The amount of friction to generate enough heat to generate any meaningful electricity will completely and utterly counter the electricity used to push the car along the road with the higher coefficient of friction of the tyres. If anything, this will make the cars use MORE electricity to run due to inefficiencies - road surface taking some of the heat, for example. Go feel your tyres next time you go for a drive. They won't exactly be "hot".

[PortentousLad]

Wait what? Heat not friction? Well OK, I should hope they know more about this kinda thing than me.

Still cool if it's a legitimate thing and not just a PR stunt.

[Geldar]

Would like to see them use the heat from breaks as well

[Richard Burton]

don't understand why they don't just put heat-electricity converters inside all four wheel arches or inside the actual rim that takes both heat from the brakes AND from the tyres. This will generate next to no electricity as all, as tyres are designed to be as friction-free as possible while there is no slip in longitudinal loads to save fuel. The amount of friction to generate enough heat to generate any meaningful electricity will completely and utterly counter the electricity used to push the car along the road with the higher coefficient of friction of the tyres. If anything, this will make the cars use MORE electricity to run due to inefficiencies - road surface taking some of the heat, for example. Go feel your tyres next time you go for a drive. They won't exactly be "hot".

Ok, the reason we don't use "heat-electricity converters" (called a peltier plate) is because electricity production is negligible and the cost of installing these would be high. Contrary to what you stated tires (spelled with an I) are actually designed to have lots of friction, this is so when you brake, you don't just skid into the car in front, from the frame of reference of the tire in contact with the ground there is no relative movement. The heat to which this video is referring comes from the brakes which are converting all of the kinetic energy (1/2mv^2) into thermal energy, this heat is usually simply radiated away (wasted) this tire design wishes to capture that. This is actually a lot of energy. for example a 1 tonne car moving at 10m/s (36kph or about 22mph for you yanks) would have 1/2*1000*10^2 = 50 000 Joules of kinetic energy, most of which would become heat in the braking system which could then be captured and turned into electricity (assuming the technology that goodyear has developed has a good efficiency). A car moving twice that speed would have 4 times the kinetic energy i.e. 200 000 joules of energy to convert to heat per brake, i.e. lots of energy. In short yes, "next time when you feel your tires" they may not be hot, that's because the heat comes from the brakes, not the tires, however again this is wrong, the tires will actually be rather toasty, driving over bumps will cause the air internally to compress, this compression heats up the air (the principle behind all refrigeration because inversely decompressed air is cooler and can through a heat exchanger absorb the heat in a system)

 

In Short i'm not having a go at you, i'm just saying perhaps before you post your theory about why something won't work maybe consider the engineers who designed this system know something that you don't and maybe, just maybe you're missing something

[Richard Burton]

looks like grip was sacrificed tremendously for this. Barely any tread to displace water so I wouldnt use this in the rain. 

 

And I highly doubt its very sticky...

Friction is independent of surface area (F=uN) i.e. frictional force equals coefficient of friction times force in Newtons applied downwards, if you double the area you are simply halving the force per unit area. Water isn't really displaced by a tire, if you look at the angles of the tread you will find they are designed so that water is pushed out the side through the treads, more area on the tire simply means a greater likelihood that the vehicle will aquaplane across the water leading to an accident. Its not about being sticky, its all about having a high coefficient of friction and a large downward force either from a spoiler or having a large mass

[dfsdfgfkjsefoiqzemnd]

Send a set to Top Gear.  Clarkson will do some of the most expensive powerslides ever.

[Sharp_3yE]

Guys DONT YOU SEE IT, CAN'T YOU SEE THE POTENTIAL HERE? What if one day we have electric cars that produce their own electricity, and enough that you may never need to charge your car? THIS could change the World. This could mean cheaper transportation. No more stopping at a gas station. No plugging your car in at night. You just simply drive and drive are far as you want (untill you need maintenance).

[ShadowCaptain]

Sheesh do you guys even read? the tyres are made of piezoelectric material, which creates electricity as pressure deforms the tyre, so when its rolling it generates electricity as the material is pressed on, I assume this is the MAIN source of electricity

 

the heat thing is just an extra, especially the thing about the sun, so when you park up, it will top up your battery while you are at work and its outside for hours and hours gathering sunlight etc!!

[Sonefiler]

Guys DONT YOU SEE IT, CAN'T YOU SEE THE POTENTIAL HERE? What if one day we have electric cars that produce their own electricity, and enough that you may never need to charge your car? THIS could change the World. This could mean cheaper transportation. No more stopping at a gas station. No plugging your car in at night. You just simply drive and drive are far as you want (untill you need maintenance).

Impossibe to use energy without some waste energy, so what you say is impossible unless you have a solar powered car.

[Technous285]

tires (spelled with an I)

*ahem* Tyre is the (current) British English spelling, not the American English (or historical English) spelling.

Hell, here in Oz we use Tyre by default, only using Tire when it's coming from a source outside of our UK heritage (eg: America).

[zacRupnow]

Just wait til Tesla does this, charge your car while driving.

[Thony]

If done right and sold reasonably then this could be good for electric cars when they become widespread an affordable

[Sharp_3yE]

Impossibe to use energy without some waste energy, so what you say is impossible unless you have a solar powered car.

What does having some of the energy be wasted in heat have anything to do with his statement not being correct? Light would shine on the tires, turn into energy and some would be wasted into just heat while the rest would be captured and put into the battery. Your car sitting there in the sun would charge the battery. Same basic idea while the car is moving. Some of the energy would be captured and then would charge the battery.