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quote:
Originally posted by indecisive
oh....I see I see. kool shit. thanks for explaining dat. I need to get more car tech info into my head heh. maybe you can explain this to me.
how exactly does the turbo increase horse power? I know it does something to the exhaust and whatever but I dont' know what. and wif a supercharger what does that do? and finally, if you increase horsepower by N/A and or Turbo do you have to change you gearing and transmission and stuff too? or will it be fine if you leave stock gearing?
Turbocharger:
Turbochargers are a type of forced induction system. They compress the air flowing into the engine. The advantage of compressing the air is that it lets the engine squeeze more air into a cylinder, and more air means that more fuel can be added. Therefore, you get more power from each explosion in each cylinder. A turbocharged engine produces more power overall than the same engine without the charging. This can significantly improve the power-to-weight ratio for the engine.
In order to achieve this boost, the turbocharger uses the exhaust flow from the engine to spin a turbine, which in turn spins an air pump. The turbine in the turbocharger spins at speeds of up to 150,000 rotations per minute (rpm) -- that's about 30 times faster than most car engines can go. And since it is hooked up to the exhaust, the temperatures in the turbine are also very high.
Supercharger:
Basically the same idea as the turbocharger, the key difference is the power supply. Something has to supply the power to run the air compressor. In a supercharger, there is a belt that connects directly to the engine. The exhaust stream powers the turbocharger.
Comparision:
Both turbochargers and superchargers are called forced induction systems. They compress the air flowing into the engine. The advantage of compressing the air is that it lets the engine stuff more air into a cylinder. More air means that more fuel can be stuffed in, too, so you get more power from each explosion in each cylinder. A turbo/supercharged engine produces more power overall than the same engine without the charging.
The typical boost provided by either a turbocharger or a supercharger is 6 to 8 pounds per square inch (psi). Since normal atmospheric pressure is 14.7 psi at sea level, you can see that you are getting about 50-percent more air into the engine. Therefore, you would expect to get 50-percent more power. It's not perfectly efficient, though, so you might get a 30-percent to 40-percent improvement instead.
There are tradeoffs in both systems. In theory, a turbocharger is more efficient because it is using the "wasted" energy in the exhaust stream for its power source. On the other hand, a turbocharger causes some amount of back pressure in the exhaust system and tends to provide less boost until the engine is running at higher RPMs. Superchargers are easier to install but tend to be more expensive.
Gearing and Transmission:
Not so sure about this one..I believe yes to both questions in some ways. Gears should be optimized to run the car smoothly so you dont stay at a certain gear for too long or your car mite lag. If the turbo added not that much power gears might not matter that much. If its a large increase you might have to change gear ratios and the gears. Same for transmission, your transmission should be able to hold a certain amount of HP. If your HP exceeds then you might have the risk of losing your tranny.
Im not so sure about the last one.. I think the older people with cars should have a better answer. I mite be wrong.
:huh:
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Props To Huby
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05-15-2002 04:47 PM
