Where does the Greddy TD04H-15G fit in?
04-03-2009, 06:41 AM
#22
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ohhhh. ok so then how do I know where on the x-axis a given car falls? What determines if at .6 bar I am producing 215 cfm (75% efficiency) or 300 cfm (70% efficiency)?
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04-03-2009, 07:57 AM
#23
The Y axis isn't boost pressure in BAR either, it is pressure ratio. The pressure ratio is:
(boost pressure (in psi) + inlet pressure (14.7 @ sea level) + IC losses) / inlet pressure.
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04-03-2009, 08:46 AM
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that's not how you read a compressor map.
at 14psi from 3000-7000RPM you could travel through the entire heat efficiency island of the turbo depending on the volume air flow produced.
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04-03-2009, 08:53 AM
#26
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Superhachi.com - Compressor Map Tutorial
The Y axis isn't boost pressure in BAR either, it is pressure ratio. The pressure ratio is:
(boost pressure (in psi) + inlet pressure (14.7 @ sea level) + IC losses) / inlet pressure.
The Y axis isn't boost pressure in BAR either, it is pressure ratio. The pressure ratio is:
(boost pressure (in psi) + inlet pressure (14.7 @ sea level) + IC losses) / inlet pressure.
good thing you mentioned that, I was about to correct.
easy formula is 14.7 + boost / 14.7 = PR
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