ADM Electric Turbo / Supercharger
- Thread starter Tanzy
- Start date
Whisky_Tango
Core Group Members
Shaun said:
Bro.. ur calculation is more accurate.
When you assume air is around 90F (32.22 degree C), what factor are you considering? Air density?
Whisky_Tango
Core Group Members
Yeah, its easier to use 1 for a model answer.
I think air density at absolute temp 0 degC, is measured at 1.29Kg/m3.
Forgot all my Thermodynamics liao.
I think air density at absolute temp 0 degC, is measured at 1.29Kg/m3.
Forgot all my Thermodynamics liao.
Well hullo, this thread is pretty interesting as well as technical. I'm pretty layman and have figure out the followings;
A 2.2L engine on 4 strokes = 2200cc /4 = 550cc of air/stroke (i.e. induction stroke). At 6500 rpm, the induction would have been 6500 x 550cc of air = 3,575,000cc = 3,575L of air.
3,575L = 3.575 x 36 = about 130 cu. ft. That is alot of air the engine consumes in a minute. Wow. Err.. how much air does the bilge blower move in a minute? My 2 cents worth.
A 2.2L engine on 4 strokes = 2200cc /4 = 550cc of air/stroke (i.e. induction stroke). At 6500 rpm, the induction would have been 6500 x 550cc of air = 3,575,000cc = 3,575L of air.
3,575L = 3.575 x 36 = about 130 cu. ft. That is alot of air the engine consumes in a minute. Wow. Err.. how much air does the bilge blower move in a minute? My 2 cents worth.
Jawz, if you read the thread carefully, they are rated between 300-500 CFM (cubic feet per min) depending on size and model.
You have to consider VE of this NA street engine - sub-100%, very likely around a best of 90% and that peak occurs at or very close to peak torque. By redline, VE is way down. . Some NA sports engine get to around 110%, whilst pinnacle NA race cars like F1, and even NASCAR cup cars peak close to 130%.
cheers man
You have to consider VE of this NA street engine - sub-100%, very likely around a best of 90% and that peak occurs at or very close to peak torque. By redline, VE is way down. . Some NA sports engine get to around 110%, whilst pinnacle NA race cars like F1, and even NASCAR cup cars peak close to 130%.
cheers man
Thankz for the info Shuan, but I'm not too knowledgeable about engine's VE. Just want to find out if the bilge blower supplying less or more air than the engine would demand.
I know my calculation is based on 100% piston capacity assumption. Hence if those blowers are producing 300 - 500 cfm, than I would assume that they are likely to provide some benefits...hmm.... now where to find these 300 cfm blowers... opps.
I know my calculation is based on 100% piston capacity assumption. Hence if those blowers are producing 300 - 500 cfm, than I would assume that they are likely to provide some benefits...hmm.... now where to find these 300 cfm blowers... opps.
Re: ADM Electric Turbo / Supercharger
1 out of every 4 strokes is induction, but 2 strokes make up one revolution. So you need only divide by 2, not 4.
2200cc at 6500rpm draws [ (2200 x 6500) / 2] cc/min since it draws air once every two revolutions. 7,150,000cc/min = 7150 L/min = 252 CFM. At 80% VE, this figure is reduced to 201 CFM.
jawzsg said:Well hullo, this thread is pretty interesting as well as technical. I'm pretty layman and have figure out the followings;
A 2.2L engine on 4 strokes = 2200cc /4 = 550cc of air/stroke (i.e. induction stroke). At 6500 rpm, the induction would have been 6500 x 550cc of air = 3,575,000cc = 3,575L of air.
3,575L = 3.575 x 36 = about 130 cu. ft. That is alot of air the engine consumes in a minute. Wow. Err.. how much air does the bilge blower move in a minute? My 2 cents worth.
1 out of every 4 strokes is induction, but 2 strokes make up one revolution. So you need only divide by 2, not 4.
2200cc at 6500rpm draws [ (2200 x 6500) / 2] cc/min since it draws air once every two revolutions. 7,150,000cc/min = 7150 L/min = 252 CFM. At 80% VE, this figure is reduced to 201 CFM.
