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 Post subject: TurboBox
Posted: Fri Jun 15, 2007 11:43 am 
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Flame me whatever...haha

This isn't practical nor am i going to try it, just want to know if it would work....

Basically you have a high pressure air chamber in your car somewhere, lets say boot with a regulator on it say 20 psi (5.3psi boost-i think), with the tank at about 20bar (about 290psi). a couple of solenoids that close a valve from your air intake to engine and take in this high pressure air from your tank increasing your air/fuel intake.

i can hear people saying...there is a smaller solution...turbo/supercharger :P

rough calcs show about 20-30seconds total running time, so not long.....

Question,under normal circumstances N/A engine.... when air is taken into the cylinder....it fills the whole cylinder at normal air pressure (14.7psi) meaning that for a 4 lt engine 4000/6 = .66 = 666cm^3....no?
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Posted: Fri Jun 15, 2007 3:04 pm 
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It could work in a short burst, in theory but I don't like the idea of 20 bar in my cylinders at bottom dead center and a normal compression ratio. I reckon the least worry would be snapped head bolts/studs, bent rods and a shattered crank.
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Posted: Fri Jun 15, 2007 3:19 pm 
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re read......a regulator giving about 20psi to your cylinders, 20bar is the tank pressure so it holds a heap of air.....

20psi would = 5.3psi boost....that was my thought, supercharger style figures here no high pressure s**t
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Posted: Fri Jun 15, 2007 3:35 pm 
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Well that would work but It would be much more complex to rig up than a basic turbo or supercharger setup. What do you plan on filling your boost box with? Plain old air or pure oxygen? This is where it starts to get real interesting.
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Posted: Fri Jun 15, 2007 3:46 pm 
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well i was thinking air, but u bring a good point to the table....
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Posted: Fri Jun 15, 2007 4:09 pm 
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Hmmmm now IIRC, Back in the 50's and 60's they used pure oxygen injection in a simular way to how you would use NOS.

290psi is a lot of preasure just think of all the safety features you would have to implement for this to work.
Also how are you going to fill the tank? a standard air compressor would not be able to do it.
I had a 3pot 5Hp 120Lt tank compressor and that could only get to 125psi.
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Posted: Fri Jun 15, 2007 4:26 pm 
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http://www.theaircar.com/

Might want to have a look at that. The french have been developing a compressed air car over the last few years. The pressure in their strorage tank is 300Bar (approx 1500psi).
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Posted: Mon Jun 18, 2007 8:32 am 
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dont tell me about the air car, had to do a thermo project on it at uni!! never want to see that thing again. :P nah its pretty clever. ridiculous pressures tho
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Posted: Mon Jun 18, 2007 11:02 am 
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Was this thermo last year? If it was then you should know who I am.
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Posted: Wed Jun 20, 2007 2:53 pm 
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Ah hmm yes it was....25yo xcabbi doesn't give me too many clues as to who you are......care to explain
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Posted: Wed Jun 20, 2007 5:34 pm 
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Remember the lecture when cooper asked the class who had the most powerfull car? I still can't believe that my lane was the most powerfull car of all the 2nd year mech eng students?
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Posted: Thu Jun 21, 2007 1:47 pm 
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The weight of the tank would probably outweigh any benefiets. I think it would get more interestig when filled with something other than air.
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Posted: Thu Jun 21, 2007 1:54 pm 
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Well in regards to it being filled with pure oxygen. You know why guys use nitrous rather than pure oxygen? Keep the cylinder temps down otherwise they'd just melt pistons.
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Posted: Mon Jun 25, 2007 11:57 am 
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ah im with you now...thats because i didnt have my boss 260 then..!
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