i wanna share this will yall...a Turbocharger works with gases that are wasted by the engine and normal air so what it does is puts those two gasses together and sends them in back into the engine...no just because it uses exhaust gasses doesnt mean it uses all of it....it uses only 1/4 of them just so that the combustion will be equal

The reason engines are super charged or turbo charged is to cram or force more air down their "throats" then they could do naturally. So there are two kinds of internal combustion engines: Naturally aspirated and charged, either via turbo or by a supercharger which is belt driven. So, basically, a turbo is inserted into the exhaust stream which spins an internal fan to enormous speeds, like around 15,000 RPMs more or less. This fan is connected to another fan outside of the exhaust drawing in fresh air and adding to the volume of air already being drawn in to the engine through the normal intake. This added air is measured in P.S.I. in America but probably measured in atmospheres in other countries. Basically it's simply a measurement of air pressure being delivered to the intake. All this air gets drawn through the air filter before reaching the combustion chamber, being charged with a small amount of combustible aerosolized fuel, and ejected out the exhaust valve and back into the environment. The result of putting a turbo charger(s) on a six cylinder engine is you're able to retain most of the efficiency of the smaller engine while experiencing the power of an engine that's much larger. It's the answer to the old axiom: There's no substitute for cubic inches. The turbo charger is what makes todays diesel engines much more powerful and palatable to many American consumers. Audi released a "R8" a few years ago to add to their flagship line, the "A8". The only difference in the engine was the "R8" has two turbo chargers and upgrades the power to a very impressive 450 horsepower. The naturally aspirated version in the "A8" only generates around 330 Horsepower.

The downside to turbo charging is the physical structure of the engine is often not built to withstand so much torque and power and will often realise a much shorter life then a larger engine with no air charger. Increasing the power output of a smaller engine by 50% or more can cause more stresses on the crankshaft, transmission, cylinder heads and other vital components that it's simply not worth it unless you're planning on it only living long enough to win that race. The reason turbos are more commonly used in diesel engines is because these engines are built of better materials, they're heavier, and just plain more rugged. Turbos have no adverse impact on diesel engines that I'm aware of. Many over the road tractors, most even, get way over 500,000 miles before their first overhaul and they operate under severe loads all day long most of the time. Car manufacturers, on the other hand, use turbos much of the time as a way to save space, to cheat. They want the big power of a big V8 but they also want a light weight car that is small and gets good or better fuel economy. The turbo is a very high stress moving part, too, to add to the potential list of broken parts that can cost money to replace down the road and the turbo requires better motor oil to keep it cool and operating properly. Many people abuse and/or neglect their turbos and sell their cars before they breakdown. Buyer beware! Buying a used car with turbo, even in a diesel, can possibly cost a lot of money down the road a bit. I think I'd stick to Audi for turbos when thinking of gasoline powered cars. I'm not so picky when thinking about diesel engines though. Weather it's German or American I think diesels are far more reliable and much better built then most any gas engines.

I hope I've added some much needed insight to the subject of air injection. I forgot to mention there's also the old-school method of injecting air called Ram Injection that's been used for many decades with a lot of success. Basically, you've got scoops in your hood and the faster you go the more air is forced into the motor. Kinda ruins the aerodynamics of the car though...

This post has been edited by Watermonkey: Aug 6 2007, 05:35 AM

Very nice article dude...but shouldnt just copy and paste...the ideas comes off of ur mind not the internet...and where ever u ggot it from please put the link

SOURCE: http://www.guyshandbook.com/cars/how-does-...rbocharger-work

VERY helpful information here Watermonkey. Until I read this article all I knew was that turbochargers help you go faster. My friend has a turbo charged diesel truck and the turbocharger definately makes a difference and helps with the power, it has lasted him 80,000 miles so far without a problem except for when he ran it dry out of diesel. This helped explain a lot though, I never really knew what they did and how they worked and I sort of wondered. It's just one more thing to push the engine to the limit though. My original dream of purchasing a turbo charged Mustang sort of went down the drain though but it will help when I do go to purchase a car or truck. It already helped in my racing game, it explains why I always have damaged cylinder heads.



Unless you can find the source please don't accuse of copying and pasting. If you do find they did copy and paste, place a report with the link to the source so that the staff can take care of it. As far as you know until then though is that it is legitament because they may just know a lot about the subject.

he wasnt just copying and pasteing...he wasnt even the Source link from the page he got it from...thats plagirizm

turbos do not mix gases from exhaust. Turbochargers use the hot exhaust from an engine to spin a turbine. This turbine propeller is connected to a second propeller by a shaft. The second propeller spins along with the first one, but this one is sucking in cool clean air from outside of the engine and it is forcing the air into the engine. This raises the compression and gives more horsepower.

Why is cool air better to use in a motor than warm air? I am assuming cool air combusts more because it expands as it heats - but thats just my logic taking a wild guess.