Turbochargers and Superchargers

[ephraim]

whats the difference? :D

[mbt]

both serve the same function -- essentially a turbine to cram more air/fuel mixture into the combustion chamber to increase power (otherwise achieved, conventionally, by enlarging the displacement of the cylinder) -- but the turbo is driven by exhaust gases, whereas the supercharger is driven by a belt driven by the crankshaft.

in other words, a supercharger uses a little bit of the engine's power (like an a/c does) to increase the total output, while a turbo doesn't. however, because the turbo is driven by exhaust gases, there is some lag before the turboed power comes along, a phenomenon called turbo lag. smaller turbos are generally less affected by turbo lag (some like the Supra use a sequential [smaller turbo is used at low rpm, then larger turbo at high rpm] twin-turbo arrangement).

there's a lot of resources about this on the net. try www.howstuffworks.com

[B16ba-type-RSiR]

Ang Supercharger is belt driven....ang Turbocharger depends on the vacuum created by the exhaust gases exiting thru the manifold...

[kevinp]

tawag diyan, forced induction. both super- and turbo-chargers increase the amount of air that enters the combustion chamber per stroke. more air = more fuel. more fuel = bigger explosion. bigger explosion = more power. kaya din may intercooler para malamig yung air na papasok sa combustion chamber ng engine. pag mas malamig, mas dense ang hangin hence more air (oxygen) molecules are able to enter the chamber for the same volume.

ot: may nabasa ako a few months back na sabi meron daw na-develop na turbo na walang lag. nilagyan nila ng small electrical motor ang turbine para mag-spin ito even at low revs. i think it's powered by a rechargeable battery that recharges during braking or pag naka-apak ka sa clutch kaya walang power cost sa makina.

may intercooler ba ang supercharged engines?

[logbook]

may intercooler ba ang supercharged engines?

good question...does anybody have a solid answer?

naisip ko kse wala e. kse pagkakaalam ko the extra power a supercharger brings doesn't neccesitate the use of an intercooler....o baka nagkakamali lang ako?:mrgreen:

[kevinp]

actually i think it would make sense for a supercharger to have an intercooler kasi ang function naman ng intercooler ay palamigin yung hangin na pumapasok sa combustion chamber. matanong nga si pareng Ace Vergel... :mrgreen:

[jackndabox29]

Anybody knows about an anti-lag systems for turbos? sometimes called ALS or "misfiring system" in initial D... alam ko lng po is sobra ingay kaya d pwede sa streets and madali raw maka cra ng exhaust... mron po bng nakaka-alam ng mechanics nto?

[SuperAE92]

may intercooler ba ang supercharged engines?

good question...does anybody have a solid answer?

naisip ko kse wala e. kse pagkakaalam ko the extra power a supercharger brings doesn't neccesitate the use of an intercooler....o baka nagkakamali lang ako?:mrgreen:

yes it still has... my corolla with a 4agze engine has one... :wink:

[splerdu]

Anti-Lag is used in WRC. Its done through the ECU program, basically when the drivers lifts off the throttle, the engine will overfuel the chamber and delay ignition so part of the combustion extends into the exhaust manifold. Burning fuel in the exhaust basically keeps the turbine spinning and kills lag during shifting and cornering.

Another form of Anti-Lag puts a dedicated injector and sparkplug in the manifold, so the turbine can be spun for even longer off-throttle periods. Problem with anti-lag is the wear on the turbine itself. You'll have to treat your car like WRC, and rebuild the turbine every 500-1000km.

kevinp,

That's very interesting. Do you remember the url? Or if not how did you come across the site?

[kevinp]

kevinp,

That's very interesting. Do you remember the url? Or if not how did you come across the site?

sorry bro, forgot na where i read about it.