14-07-2009, 07:47 PM
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Join Date: Jul 2005
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Turbos by Garrett "Turbo Tech" PDF
Great read for newbs to pro's
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Turbo Tech 101 ( Basic )
How a Turbo System Works
Engine power is proportional to the amount of air and fuel that can get into the cylinders.
All things being equal, larger engines flow more air and as such will produce more power. If we want our small engine to perform like a big engine, or simply make our bigger engine produce more power, our ultimate objective is to draw more air into the cylinder.
By installing a Garrett turbocharger, the power and performance of an engine can be dramatically increased.
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Turbo Systems 102 (Advanced)
Please thoroughly review and have a good understanding of Turbo Systems 101- Basic prior to reading this section. The following areas will be covered in the Turbo System 102 - Advanced section:
1. Wheel trim topic coverage
2. Understanding turbine housing A/R and housing sizing
3. Different types of manifolds (advantages/disadvantages log style vs. equal length)
4. Compression ratio with boost
5. Air/Fuel Ratio tuning: Rich v. Lean, why lean makes more power but is more dangerous
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Turbo Tech 103 (Expert)
This article is a bit more involved and will describe parts of the compressor map, how to estimate pressure ratio and mass flow rate for your engine, and how to plot the points on the maps to help choose the right turbocharger. Have your calculator handy!!
1 Parts of the Compressor Map:
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The compressor map is a graph that describes a particular compressor’s performance characteristics, including efficiency, mass flow range, boost pressure capability, and turbo speed. Shown below is a figure that identifies aspects of a typical compressor map:
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Last edited by tuna; 14-07-2009 at 07:50 PM.
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