wastegate
wastegate
06-14-03, 05:13 PM
#2
pei > caek
Join Date: May 2002
Location: Mars
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06-14-03, 08:54 PM
#4
I'm a boost creep...
Join Date: Jan 2002
Location: Auckland, New Zealand
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I'm assuming you know how a turbo works. The higher the engine revs, the more exhaust gases it produces. The more exhaust gases it produces, the faster it spins the turbo. The faster the turbo spins, the more air gets pumped into the engine. The more air that gets pumped into the engine, the more exhaust gases that are produced. The more exhaust gases that are produced, the faster the turbo spins. Do you see where this is going? 
Left to its own devices a turbo would simply produce as much boost as its size allows. This would quickly result in blown engine, so a method of controlling boost is required.
The wastegate is a bypass that opens when the max desired boost is reached and bypasses some of the exhaust gases around the exhaust turbine instead of through it. This holds the boost level steady.
For more info, read this page.
Left to its own devices a turbo would simply produce as much boost as its size allows. This would quickly result in blown engine, so a method of controlling boost is required.
The wastegate is a bypass that opens when the max desired boost is reached and bypasses some of the exhaust gases around the exhaust turbine instead of through it. This holds the boost level steady.
For more info, read this page.
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