Turbo Vs Non-turbo
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From: Bad Cop = No Donut
Car Info: 2005 WRX
^^
What I meant was, more air=more power but you have to give more fuel too (or else, BANG). Turbo's and superchargers cram more air into the motor. Period.
I didn't mean at all that turbo motors or supercharged motors are any better or worse than n/a motors.
What I meant was, more air=more power but you have to give more fuel too (or else, BANG). Turbo's and superchargers cram more air into the motor. Period.
I didn't mean at all that turbo motors or supercharged motors are any better or worse than n/a motors.
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Originally Posted by meilers
Hmm... I'm glad this isn't a serious discussion, or some engine designer would get all up in thar due to some misconceptions on this thread! 
Fuel + air + spark = boom = power. Normally aspirated, turbo and supercharged engines all fit this same principle. In order to get more power, a turbo or supercharged engine attempts to compress and pressurize the intake air so that the air that flows into the chamber before the intake stroke is already pressurized, increasing the amount of available oxygen and the combustion temperature. However, in turbo and "blown" engines, that compression amount is dynamic -- the harder the turbo/blower works, the more compressed air reaches the combustion chamber; thus a turbo engine generally has a lower compression ratio in order to accommodate the really really high pressure of full-on boost. Generally turbo and supercharged engines are small-displacement, medium-RPM engines with two or more valves per cylinder and fuel injection. A turbo or supercharger is a way of virtually increasing the displacement of the engine (as noted in another post) like dynamically adding cylinders to the engine as the boost comes on.
In a N/A engine, the way to make more power (beyond adding more displacement) is to raise the RPM and dump in fuel like crazy; that's why N/A race car engines run upwards of 11,000 RPM (and do so safely for hours). However, no matter how high you run the RPM, the amount of compression per stroke remains the same; you are just running the cycle MUCH FASTER -- thus the term "static compression." N/A engines are typically larger displacement, med-to-high RPM engines with sometimes up to four valves per cylinder and often using a carburetor rather than injection to supply fuel.
Neither method is a perfect solution; there are many examples of crazy-high HP from both the blown and N/A camp. I think (not certain about this!) that the best engine out there for power-to-displacement ratio is a Cosworth turbo diesel.
Fuel + air + spark = boom = power. Normally aspirated, turbo and supercharged engines all fit this same principle. In order to get more power, a turbo or supercharged engine attempts to compress and pressurize the intake air so that the air that flows into the chamber before the intake stroke is already pressurized, increasing the amount of available oxygen and the combustion temperature. However, in turbo and "blown" engines, that compression amount is dynamic -- the harder the turbo/blower works, the more compressed air reaches the combustion chamber; thus a turbo engine generally has a lower compression ratio in order to accommodate the really really high pressure of full-on boost. Generally turbo and supercharged engines are small-displacement, medium-RPM engines with two or more valves per cylinder and fuel injection. A turbo or supercharger is a way of virtually increasing the displacement of the engine (as noted in another post) like dynamically adding cylinders to the engine as the boost comes on.
In a N/A engine, the way to make more power (beyond adding more displacement) is to raise the RPM and dump in fuel like crazy; that's why N/A race car engines run upwards of 11,000 RPM (and do so safely for hours). However, no matter how high you run the RPM, the amount of compression per stroke remains the same; you are just running the cycle MUCH FASTER -- thus the term "static compression." N/A engines are typically larger displacement, med-to-high RPM engines with sometimes up to four valves per cylinder and often using a carburetor rather than injection to supply fuel.
Neither method is a perfect solution; there are many examples of crazy-high HP from both the blown and N/A camp. I think (not certain about this!) that the best engine out there for power-to-displacement ratio is a Cosworth turbo diesel.
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Originally Posted by gpatmac
Was I all that jacked up?
Oh, and BTW, the best way to add power to any engine design is convert it to run on METHANOL. You have to like a fuel that comes with its own oxygen!
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From: Bad Cop = No Donut
Car Info: 2005 WRX
Originally Posted by meilers
No, not at all. I just like going into great detail about something for no good reason. It is a sickness
Oh, and BTW, the best way to add power to any engine design is convert it to run on METHANOL. You have to like a fuel that comes with its own oxygen!
Oh, and BTW, the best way to add power to any engine design is convert it to run on METHANOL. You have to like a fuel that comes with its own oxygen!
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Engine/Power - non turbo (All non turbo Imprezas)
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Jun 1, 2004 11:13 PM