Suck Squeeze bang blow question!

[The Lovely Boyo]

yes....but only instantaneously

you would need to use a bit of simple calculus to get the changes with respect to each other

but as a rule of thumb yep seems fair.

I don't need to know instananeous differences.

I was asknig because I need to source an intercooler that would fit on a 4.2 litre engine, max rpm = 4,200.

So the cooler would need to 'breathe' a maximum of 8,820 litres/min.

So a cooler off a 3 litre engine that runs up to 6000rpm would suffice???

Maybe?? Or maybe not?? This is why my brain is hurting !!!!!

[gwh200]

I don't need to know instananeous differences.

I was asknig because I need to source an intercooler that would fit on a 4.2 litre engine, max rpm = 4,200.

So the cooler would need to 'breathe' a maximum of 8,820 litres/min.

So a cooler off a 3 litre engine that runs up to 6000rpm would suffice???

Maybe?? Or maybe not?? This is why my brain is hurting !!!!!

you have to figure the pkenum size,turn it into a cubed measurment,and figure out how much can get through to the engine via the inlet pipe.this mawill be big enough if you are not chargecooling

for example a cooler size 0.2m x0.2m x0.2m would have a captivity of 0.0018 m^3 so over i minute would deliver just over 1 m^3 of air so something 4 times as large will be required

or just make sure that the cooler inlet is the same size as the engine inlet pipe

it may not get cooled as well at 4200 rpm,but how often do you anticipate doing that sort of rpm

[BUSHWHACKER]

Just get the biggest intercooler that will physically fit under the bonnet!
No maths needed, you're just cooling the intake air, the throttle butterfly deals with the amount going into the manifold.

[gwh200]

go get him tiger !!

[Bibs]

go get him tiger !!

That line an that avatar crease me up....

[da SLUG man]

remember the turbo will be compressing the air... so you'll get more than 2 litres in there.

[gwh200]

well bl00dy done,throw another spanner in the works

[BioHazard]

Also if a snorkel is being used it will act as a air ram.......


Added another spanner ........the mechanism will grind to a halt soon

[da SLUG man]

but it will stay on the conveyor belt!

[sv1000spilot]

remember the turbo will be compressing the air... so you'll get more than 2 litres in there.

So on overrun down hill you'll get less ???

[Apache]

You need to be doing a whole lot more than Surf speeds before you get significant ram effect (if you're talking about compressing the air) into a turbocharged engine.

This is why ramjets dont work below several thousand miles an hour.

[muller1]

Ram Jet

Regarading the Ram Jet.
The ram or pulse jet was used during the last war by a Mr A. Hittler aka (Shikklegruber).
He delivered quite a few V1 flying bombs to the citizens of London
in the 1940s.
They flew on the level at about 400 mph give or take a wee bit.
They were caught up by our Spitfires and tipped over to disturb the gyro.
They pit flew at just over 400mph on the level.
The Spit used to dive to increase speed to catch the ram jey flting bomb but this was no where near a couple of thousand mph.


Sorry.

Mike

[da SLUG man]

pulse jet and ram jet are different things...

think you got a bit confused there!... Mr Hitler used a pulse jet.

[Albannach]

remember the turbo will be compressing the air... so you'll get more than 2 litres in there.

No you won't. It'll still be 2 litres, just at a higher presure and temperature.

[da SLUG man]

No you won't. It'll still be 2 litres, just at a higher presure and temperature.

depends when you measure the 2 litres...