External Wastegates, How they work?
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| Damo |
 Jul 5 2005, 01:22 AM
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#1
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Young Driver  Group: Members Posts: 1 Joined: 5-July 05 Member No.: 4729  |
hey im just new and i know quite a bit bout engines n all cuz ive bin obsessed wit them since i was like 8 and ive bin trying to find out sum stuff bout external wastegates. from wot i know the wastegate is used to divert the exhaust flow into the exhaust system instaed of goin into the turbines therefor spining and creating boost. but wot i dont get is external wastegates, they said that they divert the exhaust flow into the atmoshpere and not into the exhaust system and if so then wot is the need for a exhaust system then? becuz the exhaust flow will be goin into either the atmosphere or the turbo. i dont get it can u guys plz help me out here
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| DarkStealth |
Jul 5 2005, 03:10 AM
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#2
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Shooting for 12's Group: Members Posts: 1307 Joined: 15-September 04 Member No.: 3142 |
English please from now on, reading that makes my head hurt. In any case...
(I'm exhausted, if this is wrong or whatever, I blame it on that.) Physics is what makes you want to have an external wastegate and an exhaust. When you go WOT, and the pressure from the exhaust is enough to spin the turbine and build boost, you need to divert it at some point to keep even flow over the turbine. Now, exhaust gas will only go to the point of least resistance, now which one do you think has more back pressure, the exhaust (which has a turbine blade in the way.) or... outside air? -Dan |
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| VeilSide |
Jul 8 2005, 11:57 PM
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#3
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Street Racer Group: Members Posts: 191 Joined: 13-April 05 Member No.: 4214 |
QUOTE(Damo @ Jul 5 2005, 04:22 PM) hey im just new and i know quite a bit bout engines n all cuz ive bin obsessed wit them since i was like 8 and ive bin trying to find out sum stuff bout external wastegates. from wot i know the wastegate is used to divert the exhaust flow into the exhaust system instaed of goin into the turbines therefor spining and creating boost. but wot i dont get is external wastegates, they said that they divert the exhaust flow into the atmoshpere and not into the exhaust system and if so then wot is the need for a exhaust system then? becuz the exhaust flow will be goin into either the atmosphere or the turbo. i dont get it can u guys plz help me out here  http://www.streetracersonline.com/articles...o/wastegate.php |
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| WhoDriving? |
Jul 9 2005, 12:33 PM
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#4
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whatever Group: Members Posts: 3856 Joined: 26-January 04 Member No.: 850 |
For the record, not everything Varga has written on this site was absolutely correct.
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| VeilSide |
Jul 9 2005, 08:20 PM
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#5
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Street Racer Group: Members Posts: 191 Joined: 13-April 05 Member No.: 4214 |
QUOTE(WhoDriving? @ Jul 10 2005, 03:33 AM) For the record, not everything Varga has written on this site was absolutely correct. I just put the link there because it was easy, all the info was there so I thought well why not. But I guess if not everything Varga says is correct then people are still open to share their opinions about the subject. |
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| jesus |
Jul 18 2005, 08:10 PM
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#6
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Ricer Supreme Group: Members Posts: 44 Joined: 16-July 05 Member No.: 4804 |
external wastegates act as an emergency blowoff for excess exhaust gasses going into the turbo. instead of recycling the exhaust gasses through the turbo to spin the turbine, the wastegate releases it into the exhaust manifold and it leaves the engine without going to the turbo. this is used when the turbo is giving off to much boost to lessen the amount of boost going through the engine. this keeps your turbo and the rest of your engine for overheating.
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| DarkStealth |
Jul 18 2005, 11:09 PM
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#7
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Shooting for 12's Group: Members Posts: 1307 Joined: 15-September 04 Member No.: 3142 |
Jesus... please stop posting technical info.
-Dan |
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| TheWastedYears |
Jul 20 2005, 08:10 AM
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#8
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checka checka da email! Group: Members Posts: 6945 Joined: 25-January 04 From: South of Heaven Member No.: 835 |
QUOTE(DarkStealth @ Jul 18 2005, 11:09 PM) Jesus... please stop posting technical info. -Dan Agreed. Your "smart post" privleges have been suspended until they can live up to the name. |
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| WhoDriving? |
Jul 20 2005, 09:55 AM
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#9
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whatever Group: Members Posts: 3856 Joined: 26-January 04 Member No.: 850 |
Who is this bunghole masquerading as me?
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