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Forced Induction Superchargers | Turbochargers | Intercoolers

Compressor A/R

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Old 04-29-2007, 10:47 PM
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Default Compressor A/R
So if Turbine A/R contributes to Spool rate,What exactly does compressor A/R control?
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Old 04-29-2007, 10:47 PM
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cfm and boost
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Old 04-30-2007, 06:43 AM
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I need a little more than that. How does cfm and boost relate to A/R?
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Old 04-30-2007, 10:12 AM
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Compressor A/R controls compressor outlet velocity and map movement. You can shift the map a little with different covers.
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Old 04-30-2007, 10:19 AM
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So holding the compressor wheel size constant, a larger size compressor A/R shifts the map left or right?
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Old 04-30-2007, 11:07 AM
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To the right, but could have adverse effects on surge limits and compressor wheel stagnation under higher pressure ratios.
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