Crazy idea or what?
Submitted: Friday, Feb 13, 2004 at 01:41
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V8troopie
While idly looking at a
table for Hp gain per blower boost:
http://www.csgnetwork.com/blowerhpcalc.html
I had this idea I would like to present to the wisdom on this
forum.
What if I connect an air line from the car compressor reservoir to the intake manifold, fitting an electrically operated dump valve there?
Nothing would happen until I'd press a button on the dash, which would activate the dump valve and empty the air reservoir into the manifold. This ought to increase the pressure in there and the engine getting a power surge for a few glorious seconds.
Would this work? I'm talking about a normally inspired diesel motor there.
When you use the calculator above, just a small increase, like 5 PSI, results in quite a large power gain. And, if one selects the air orifice carefully this pressure might be maintained for a few seconds.
Usefulness,
well the extra kick in the pants power might come in handy in a pedal to the floor situation :-)
fire away, all comments welcome.
Klaus
Reply By: Member - Ed. C.- Friday, Feb 13, 2004 at 02:07
Friday, Feb 13, 2004 at 02:07
Klaus,
Wouldn't the fuelling need to be adjusted to be able to make use of the extra air??
(as is presumably the case with turbo & s'charger installations)....
Now if you could work out a way to "give it a shot of ether" as you dump that extra air in there,
well... who knows??? ..... hehehe
Regards, Ed. C.Confucius say.....
"He who lie underneath automobile with tool in hand............
Not necessarily mechanic!!"
AnswerID:
46556
Follow Up By: GaryInOz (Vic) - Friday, Feb 13, 2004 at 03:54
Friday, Feb 13, 2004 at 03:54
Would work up to a point with EFI with mass airflow sensor, but would be very short term.
40 litre tank (1 metre x 250 mm) @ 10 bar (150PSI) = 400 liters of air.
Assuming 4 litre engine swept capacity every 2 revolutions (effectivly zero boost) the 400 litres would last 800 revs of the engine. At 4000 rpm (you wouldn't be using it off idle) it would last avbout 12 seconds, less if you actually wanted boost. I.E. just long enough to get you into more problems that you would be likely to get out of.
FollowupID:
308444
Reply By: Mick - Friday, Feb 13, 2004 at 08:29
Friday, Feb 13, 2004 at 08:29
Why dont you fit a small bottle of LPG under the bonnet, hit a switch and inject it through an injector nozzle to give it about 50% more power for a few seconds. Its been tried tested and it works
well.
Some trucks were fitted with this in the early days for big
hill trips like mt Vic.
The small amount of air your talking about wont do much, you need a higher cfm and an aneroid, or air fuel ratio control to increase the fuel as you dump it.
Ive tried injecting ether on my GQ old shortie, but it pinged like crazy, this was before i had a blower on it, before i changed camshafts, high flowed turbos, rally spec injection pump, and adventually got 140hpat wheels!
Keep thinkin.
AnswerID:
46559
Reply By: Member Eric - Friday, Feb 13, 2004 at 20:46
Friday, Feb 13, 2004 at 20:46
Sorry it took a while to reply but I couldnt stop laughing when I read the poast . As a thought its great . In reality its a no go . How a blower works , is like a copressor , yes this part is correct , but how a rotor compressor works , its it creates pressure in the manifold from the air above it , as the rotor turns , it pumps air into the manifold creating pressure , the rotor spining 1 way also stops the air from coming back up . If you dumped a whole heap of air into the manifokd , all that would happen is that the motor would stall ,depending on were the air inlet came it , it would either siphen fuel out of the cilinder or blow the fuel mixter all over the place
Venus Bay
AnswerID:
46632