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How does a turbocharger with intercooler work?
A turbocharger is basically an air pump. Exhaust gases leaving the engine spin a turbine. The turbine spins an impeller that compresses air heading to the engine. When you stuff more air into the engine, it means you can also burn more gasoline. So you can get more power out of the engine per piston stroke. An engine with a lot of boost can produce hundreds more horsepower than an engine that is not turbocharged.
When you compress air, it gets hot. When air gets hot, it expands. This defeats the purpose of the turbocharger, since the expansion means that the engine gets less air than it could. An intercooler is a big radiator. You run the hot compressed air from the turbocharger through the intercooler to bring down its temperature and make it denser. |
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Re:Heat Exchanger Theory and Intercoolers
An intercooler is a heat exchanger. That means there are two or more fluids that don't physically touch each other but a transfer heat or energy takes place between them. Turbo Regals made in 1986/87, Turbo TAs, GMC Syclones and Typhoons all came with intercoolers to cool down the hot compressed air coming from the turbocharger. Turbo Regals and Turbo TAs use outside air as the cooling media; Syclones and Typhoons use water. Turbo Regals made in 1985 and before did not have intercoolers as original equipment.
At wide open throttle and full boost the hot compressed air coming from a turbocharger is probably between 250 and 350 deg F depending on the particular turbo, boost pressure, outside air temperature, etc.. We want to cool it down, which reduces its volume so we can pack more air molecules into the cylinders and reduce the engine's likelihood of detonation. How does an intercooler work? Hot air from the turbo flows through tubes inside the intercooler. The turbo air transfers heat to the tubes, warming the tubes and cooling the turbo air. Outside air (or water) passes over the tubes and between fins that are attached to the tubes. Heat is transferred from the hot tubes and fins to the cool outside air. This heats the outside air while cooling the tubes. This is how the turbo air is cooled down. Heat goes from the turbo air to the tubes to the outside air. There are some useful equations which will help us understand the factors involved in transfering heat. These equations are good for any heat transfer problem, such as radiators and a/c condensers, not just intercoolers. After we look at these equations and see what's important and what's not, we can talk about what all this means. |
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Re: How does a turbocharger with intercooler work?
http://www.gnttype.org/techarea/turbo/turboflow.html
http://www.gnttype.org/techarea/turbo/intercooler.html Not sure why the above articles were copypasta'd here? However, see the above links for the full articles...
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Ken Mosher 1987 GN original owner 650+ HP Black 2015 BMW 328xi XDrive wagon 2012 Volkswagen Tiguan (the Tig!) Night Blue Met (sold) 2006 Trailblazer SS Red Jewel Tint 395 HP AWD (sold) 2014 Silverado LTZ Crew 4WD 2012 Honda VFR 1200F Tahitian Blue (sold) 2015 BMW S1000R Racing Red 2013 Honda CBR500R Red (wife's bike) 2014 Triumph Bonneville T100 2003 Harley Davidson V Rod Anniversary Edition |
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Re: How does a turbocharger with intercooler work?
Since he's a 2 post wonder I'd bet he's a spammer that got killed off by Scott. Just no links.
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