Hot Air? - Tom Shaw
Did anyone here an item on radio 2 yesterday about a car that has been developed (In France, I think) that runs on compressed air? Apparantly it can refilled by the air compressor at any garage in two minutes and has a range of 150 miles with a top speed of 69 mph. It can also be filled overnight on a domestic compressor of the type used to inflate air-beds, etc. The engine is said to be scheduled for production sometime next year.

I checked the date and it definately wasn't April 1st. If true, how the hell would they put a tax on that?

Hot Air? - Dynamic Dave
www.globalstewards.org/aircar.htm
Hot Air? - THe Growler
They'd probably tax all the machines burning up all the fuel and creating all the emissions and all the other sins presently attributed to the car in order to pump the compressed air to power these things. Plus ca change...
Hot Air? - L'escargot
Did anyone here an item on radio 2 yesterday about a
car that has been developed (In France, I think) that runs
on compressed air? Apparantly it can refilled by the air compressor
at any garage in two minutes and has a range of
150 miles with a top speed of 69 mph. It can
also be filled overnight on a domestic compressor of the type
used to inflate air-beds, etc. The engine is said to be
scheduled for production sometime next year.


I'll believe it when I see it !!

Although I haven't (and I'm not going to try to, because I'm not clever enough !!) done any calculations, I just can't imagine how you can store enough energy in the form of compressed air in a car to enable it to travel 150 miles. Did someone get the decimal point in the wrong place ? It does happen !! For example, it happened when "they" originally (1939-1945*) publicised the benefits of eating spinach ~ strange but true !!

* As you get older you realise that you are becoming increasingly full of useless information !!
Hot Air? - THe Growler
Are we to infer eating spinach contributes to the generation of hot air? If so, then we're back to cows and global warming......
Hot Air? - Citroënian {P}
L'escargot wrote:
>>... *As you get older you realise that you are becoming increasingly full of useless information !!

No, no, no! Useless information is excellent and the main benefit of age - did you know for example there's more plastic flamingoes in the world than real ones? They don't teach you that sort of thing at school! ;-)

Lee.
Hot Air? - Tomo
I see you have to burn fuel in it to get any performance. Surely this idea has been used at sea for many years? In a device called the torpedo!
Tomo
Hot Air? - Tomo
And if the 300 atmosphere pressure vessel bursts the effect might be similar.
Tomo
Hot Air? - CM
And if the 300 atmosphere pressure vessel bursts the effect might
be similar.
Tomo


Similar problems with hydrogen. Some manufactures favour a tank kept at -253ºc (eg BMWs 7series V8, 184bhp, 133mph).
Hot Air? - John S
Tom

Discussed, and pretty much dismissed on this site a while back. I'm sure someone will find the link.

When you read it doesn't use a domestic compressor, or garage air line. It does use very high pressure storage, so does appear to store realistic quantities of energy. The 'engine/expander seems a bit odd though, and the figures don't realy stack up. Somewhat flexible with the verite on sales (allegedly).

Regards

John S
Hot Air? - Vin {P}
Remember that the 150 mile range might be in the same vein as the "cars" that do 9000 mpg in experiments...
Hot Air? - CM
Remember that the 150 mile range might be in the same
vein as the "cars" that do 9000 mpg in experiments...


Or a V8 Land Rover at about 10mpg
Hot Air? - John S
Found it:

November last year

www.honestjohn.co.uk/forum/post/index.htm?t=2344

Regards

John S
Hot Air? - John S
Er, no, sorry that's not it.

Can't work this 'search' system!

Regards

John S
Hot Air? - Honestjohn
It's on Quentin Willson's page with a photo in the Mirror today. Says tops speed is 68mph, range is 125 miles, engine is 600cc and "costs just £1 to refuel with compressed air at any filling station". So you get up to 125 miles for £1. Leaves the question, how much energy does it take to compress the air?

HJ
Hot Air? - BrianW
"Leaves the question, how much energy does it take to compress the air?"

Unless someone has invented perpetual motion it will take more energy to compress the air than the energy which will be be regained from it.

So, if my maths/logic is correct, if you are going to do, say 125 miles at around 60 mph taking two hours at say 50 bhp, you will need to input ten horsepower for at least ten hours to recharge the system.

Hot Air? - volvoman
Heard this subject aired on Talk Radio today - Mike Rutherford's show. It is true but the problem remains that the energy used to compress the air to the pressure required still has to come from somewhere. I think the conscensus was that it's a bit like electric cars whereby the emissions are effectively transferred from the cars to the power stations which provide the electricity for recharging them. The primary benefit of the air powered car therefore seems to be cleaner air in towns and the energy needed for the compressors still has to be produced from somewhere.
Hot Air? - Honestjohn
Phew! (exhalation of hot air). We got somewhere, then.

HJ
Hot Air? - Drew
Surely the question is 'is it real or bull?
I have the feeling its a scam, but hey we might get lucky
www.theaircar.com/

Drew
It's on Quentin Willson's page with a photo in the Mirror
today. Says tops speed is 68mph, range is 125 miles, engine
is 600cc and "costs just £1 to refuel with compressed air
at any filling station". So you get up to 125 miles
for £1. Leaves the question, how much energy does it take
to compress the air?
HJ
Hot Air? - andymc {P}
Here's the site.

www.theaircar.com/index.html

There are a few different versions - pickups, family cars (although it looks closer to a mini MPV), vans or taxis. Not sure what the difference between the MPV & the taxi is, unless the MPV doesn't have a sliding door. The site goes into some detail to explain how it works, with a couple of diagrams and an animated graphic. Neat idea, using the "exhaust" air to run the air con.

I agree with the comments above, in that the energy production to compress the air has to come from somewhere (and it won't be my bicycle pump). Still, wind/hydro-electric/wave/solar powered compression would in effect mean close to zero pollution for running the thing. and local air quality would be vastly improved if they took off. Just a pity the things are so da** ugly!
Hot Air? - lezebre
Just a pity the things are so [expletive deleted] ugly!


That's just the point made in the current sunday supplement advert for the Honda Innsight (whoops, Freudian typo).
The line is to the effect that "a car this technologically advanced, you'd expect to look like a cardboard box"
Hot Air? - volvoman
It's not a scam - the cars are real and Mike Rutherford is going to meet the company's technical boffins at the forthcoming Paris Motorshow with a view to doing a follow-up piece on his Friday PM motoring slot sometime afterwards (BTW it's on Talk-Sport 1053-1089am. Hope that's okay to mention Mark, HJ etc..