ROGUE TROOPER Posted July 25, 2006 Share Posted July 25, 2006 Air from a Turbo charger that is, not with an intercooler? Just wondered! Ta Quote Link to comment Share on other sites More sharing options...
HoSS Posted July 25, 2006 Share Posted July 25, 2006 I dont understand the question. You mean what temp rise will the turbo give to the air. It will be the same rise with or without an intercooler, but if the charge is pre cooled it will compensate & improve combustion. Quote Link to comment Share on other sites More sharing options...
Turbocharger Posted July 25, 2006 Share Posted July 25, 2006 It depends on the pressure ratio and the efficiency of the turbocharger - I'd imagine up to 150deg C on a Tdi but probably less if you're considering your nasty petrol-burning vapourwagon which can't tolerate sensible levels of manifold pressure... Quote Link to comment Share on other sites More sharing options...
will_warne Posted July 25, 2006 Share Posted July 25, 2006 It depends on the pressure ratio and the efficiency of the turbocharger - I'd imagine up to 150deg C on a Tdi but probably less if you're considering your nasty petrol-burning vapourwagon which can't tolerate sensible levels of manifold pressure... You mean like 50 psi Quote Link to comment Share on other sites More sharing options...
Astro_Al Posted July 25, 2006 Share Posted July 25, 2006 Seems like a pretty straightforward question to me...? Here you go, half way down the page: http://www.gnttype.org/techarea/turbo/turboflow.html Al. Quote Link to comment Share on other sites More sharing options...
Andy Posted July 25, 2006 Share Posted July 25, 2006 wow big words & long sums with a fancy graph, must be intelligent stuff that - wots it mean? Quote Link to comment Share on other sites More sharing options...
Astro_Al Posted July 25, 2006 Share Posted July 25, 2006 wow big words & long sums with a fancy graph, must be intelligent stuff that - wots it mean? ??? Now I'm lost - it means the answer to his question, no...? You can't answer a thermodynamics question without at least touching on stuff which is vaguely thermodynamiccy... It's only 1 equation. If any of it confuses you, post up a specific question. Al. Quote Link to comment Share on other sites More sharing options...
ROGUE TROOPER Posted July 25, 2006 Author Share Posted July 25, 2006 Sorry should have been more specific but im at work.....working with deadlines so it had to be a short one! So if the air temp going into the engine is about 150°c then a charge cooler using the engine water of 80°c would hopfully cool it. Im looking into ways of turbo cooling at the mo............the master plan is to drop the V8 TT into a RR. But first I must get the 2A working!!! Thanks all Quote Link to comment Share on other sites More sharing options...
Astro_Al Posted July 25, 2006 Share Posted July 25, 2006 If you're going to all that bother, may as well go for the maximum temperature differential you can find (i.e. not using HOT engine water). It doesn't get long to cool the air, so give it a fighting chance... Al. Quote Link to comment Share on other sites More sharing options...
RPR Posted July 25, 2006 Share Posted July 25, 2006 You wouldn't want to look at a metered Nitrous Oxide application instead? Instead of the boy racer massive injection at the top end of an engines capacity (with all the inherent problems that entails) there are now metered kits that deliver a certain amount within given performance parameters (its less complex than I am making it sound) so that it stops before you go boom and only kicks in when it is most needed - i.e. is more torque focused than top end hp focused. This gives you the benefits you seem to be looking for without necessarily requiring a PhD in thermdynamiccy stuff. Just a thought. Quote Link to comment Share on other sites More sharing options...
northernchris Posted July 25, 2006 Share Posted July 25, 2006 Sorry should have been more specific but im at work.....working with deadlines so it had to be a short one!So if the air temp going into the engine is about 150°c then a charge cooler using the engine water of 80°c would hopfully cool it. Im looking into ways of turbo cooling at the mo............the master plan is to drop the V8 TT into a RR. But first I must get the 2A working!!! Thanks all You would NEVER want to run engine cooling water through the charge cooler ,only if you wanted to use it as a pre heater!!!!!!!!!!!!!!!! Quote Link to comment Share on other sites More sharing options...
Turbocharger Posted July 26, 2006 Share Posted July 26, 2006 As NorthernChris says, when you're at full boost (Al's worked example is using 19psi) you'd be cooling the charge but at low boost (as you're running on your nasty petrol-burning witchcraft machine) you'd be heating the air... Quote Link to comment Share on other sites More sharing options...
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