waste gate questions
02-28-2007 | 05:30 PM
#3
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Joined: Feb 2007
Posts: 61
Purpose of a Waste Gate
A turbo uses the exhuast gases of the engine to drive a turbine that then transfers this force to an impeller which compresses air before it is charged with fuel and puleed into the cylinder.
A wastegate is a valve that diverts exhaust gases away from the turbine wheel in a turbocharger. Diversion of exhaust gases causes the turbine to lose speed, which in turn reduces the rotating speed of the compressor. The primary function of the wastegate is to stabilize boost pressure in the turbocharger, to protect the engine and the turbocharger from having too much preasure and blowing the engine (typically seen as a blown head and/or head gasket).
Waste gates can either be internal or external. An internal wastegate is an integral part of the turbine housing. You tend to see this on newer turbo systems. An external wastegate is a separate self-contained mechanism typically used with turbochargers that do not have internal wastegates. As an example, the Porsche 930 Turbo Carrera utilized an external waste gate (one of the reasons you see a dual tip pipe out the back of a 930)
If you've every been to a race event or seen a turbocharged car at a drifting event, that popping sound you hear as the car races by at the limit is the wastegate dumping boost so the engine boost pressure does not exceed the capabilities of the engine.
A wastegate is a valve that diverts exhaust gases away from the turbine wheel in a turbocharger. Diversion of exhaust gases causes the turbine to lose speed, which in turn reduces the rotating speed of the compressor. The primary function of the wastegate is to stabilize boost pressure in the turbocharger, to protect the engine and the turbocharger from having too much preasure and blowing the engine (typically seen as a blown head and/or head gasket).
Waste gates can either be internal or external. An internal wastegate is an integral part of the turbine housing. You tend to see this on newer turbo systems. An external wastegate is a separate self-contained mechanism typically used with turbochargers that do not have internal wastegates. As an example, the Porsche 930 Turbo Carrera utilized an external waste gate (one of the reasons you see a dual tip pipe out the back of a 930)
If you've every been to a race event or seen a turbocharged car at a drifting event, that popping sound you hear as the car races by at the limit is the wastegate dumping boost so the engine boost pressure does not exceed the capabilities of the engine.
03-21-2007 | 04:46 PM
#5
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Joined: Jan 2007
Posts: 1,149
From: Los Angeles
Originally Posted by release2063
i knew all of that, i was asking what the top valve on the evolution waste gate is used for, the bottom valve goes back to the turbo compresor side, it is the turbonetics kit
03-25-2007 | 08:29 AM
#6
Member
Joined: Feb 2006
Posts: 16
From: Camarillo, CA
yes please find out cause i just installed my turbonetics kit today and am curious what it is for, but as far as i know, it is for a boost controller, which turbonetics specificaly told me not to use on it, too late. i baught the turbonetics manual boost conroller and it comes with instrucion and it specifically says the upper port on evolution turbonetics waste gates is for a boost controller and gives a routing diagram.
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