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Here is something else I found..
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Posted by sean on September 11, 2002 at 00:31:57:
In Reply to: Re: what is the difference between the turbo charger and kompressor posted by tony on July 23, 2001 at 03:46:39:
it's got nothing to do with how much CFM the fan could handle.
flow of air is always there even without the pressure. read your text book first.
only when the pressure is apply to the volume we can now call it a *controlled flow*
Don't waste any money on *E-Ram* charger thing.
it's not a charger. it's just a fan.
it's no good when E-ram can push 100,000,000 CFM while it can only pressurize upto 1 psig. intake will always draw the air that is needed for the specific rpm range and all else is wasted.
Vp=amount of air needed
Va=charger max airflow
Pa=charger psig @ max airflow
Pt=final intake pressure
Pt=Vp-Va when VaPb=is -0.5 psig. (vacuum @ intake)
Vp=(Va/Vp)Pa-(Vb/Vp)Pb when Vaif Va>Vp then Pt=(1)Pa
don't forget to add 14.9 psig on each P value.
let's test plug in some numbers for the E-charger.
oh. and by the ways. it's a SCAM. Don't buy E-Ram product because it's waste of your money.
let's say that you have 3.0L car and it requires 300 CFM@6000rpm.
Vp=300
now you have a blower (axial fan) blowing the air at the rate of 750CFM @ 1psig over 14.9psig.
so
Pt=(1)1psig
simple right?
not really
let's say that your car is making 200hp @ 6000rpm.
at the rate of 300CFM @14.4 psig (considering the negetive intake pressure)
and now because of this E-ram thing.... you're able to create 300CFM @15.4 pisg. it's not 750 CFM. and do you know why? I hope you do cuz if you don't.... read the subject. that's who you are.
so let's calculate the Horse power!
14.4:200 = 15.4:X
14.4X=200(15.4)
x=213.89 HP
your gain is 13.89 HP
yeah.. you gain a bit. you do.. but let's think for a minute. where did the rest of 750CFM went?
if you're smart enough then you already know that E-ram didn't get 750CFM when it is installed to your car's intake. as a matter of fact, it only drew 300 CFM. and I think I told you the reason why.
so there you have it. all the mysterious BS about E charger. and why it can and cannot make the HP you deserve.
because the stupid moron used axial fan.
if he had a minimum educations on simple physics, then he should know very well that axial was a bad choice.
my answers to you morons.
you only need a blower that can handle... hmmmm
let's say.. 300CFM @ 7psig . that's it.
anything that is more then 300CFM is complete waste of your money and electricity.
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Comments:
: it's got nothing to do with how much CFM the fan could handle.
: flow of air is always there even without the pressure. read your text book first.
: only when the pressure is apply to the volume we can now call it a *controlled flow*
: Don't waste any money on *E-Ram* charger thing.
: it's not a charger. it's just a fan.
: it's no good when E-ram can push 100,000,000 CFM while it can only pressurize upto 1 psig. intake will always draw the air that is needed for the specific rpm range and all else is wasted.
:
: Vp=amount of air needed
: Va=charger max airflow
: Pa=charger psig @ max airflow
: Pt=final intake pressure
: Pt=Vp-Va when Va
: Pb=is -0.5 psig. (vacuum @ intake)
: Vp=(Va/Vp)Pa-(Vb/Vp)Pb when Va
: if Va>Vp then Pt=(1)Pa
: don't forget to add 14.9 psig on each P value.
:
: let's test plug in some numbers for the E-charger.
: oh. and by the ways. it's a SCAM. Don't buy E-Ram product because it's waste of your money.
: let's say that you have 3.0L car and it requires 300 CFM@6000rpm.
: Vp=300
: now you have a blower (axial fan) blowing the air at the rate of 750CFM @ 1psig over 14.9psig.
: so
: Pt=(1)1psig
: simple right?
: not really
: let's say that your car is making 200hp @ 6000rpm.
: at the rate of 300CFM @14.4 psig (considering the negetive intake pressure)
: and now because of this E-ram thing.... you're able to create 300CFM @15.4 pisg. it's not 750 CFM. and do you know why? I hope you do cuz if you don't.... read the subject. that's who you are.
: so let's calculate the Horse power!
: 14.4:200 = 15.4:X
: 14.4X=200(15.4)
: x=213.89 HP
: your gain is 13.89 HP
: yeah.. you gain a bit. you do.. but let's think for a minute. where did the rest of 750CFM went?
:
: if you're smart enough then you already know that E-ram didn't get 750CFM when it is installed to your car's intake. as a matter of fact, it only drew 300 CFM. and I think I told you the reason why.
: so there you have it. all the mysterious BS about E charger. and why it can and cannot make the HP you deserve.
: because the stupid moron used axial fan.
: if he had a minimum educations on simple physics, then he should know very well that axial was a bad choice.
: my answers to you morons.
: you only need a blower that can handle... hmmmm
: let's say.. 300CFM @ 7psig . that's it.
: anything that is more then 300CFM is complete waste of your money and electricity.
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