can someone help me understand this compressor map?
09-12-04, 07:36 PM
#1
Bimmer *****
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can someone help me understand this compressor map?
i'm not sure exactly what this tells me... i see stuff about 153,500 rpm, and 50 trim... this is for a "50 trim" T3 turbo... what kind of things does this compressor map tell me?
09-12-04, 11:00 PM
#2
Microtech Tuning!
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In general... turbo is most efficient at 8-21lbs boost. Probably good to flow enough for 200hp at the flywheel (on an efficient piston engine) at around 25lbs boost which is probably near it's limits.
09-13-04, 10:04 AM
#4
Compressor maps tell you this......
From the bottom, left to right is airflow in pounds per minute.
On the left colom from bottom to top is pressure ratio in bar. 1.00 bar is basically ambient pressure (ambient or reletive pressure of the atmosphere is 14.7 psi, this equals O psi of boost) 2.00 bar is 14.7 psi, 3.00 bar is 29.4 psi of boost etc. etc.
The oblong circles or "islands" are the compressors effiency. Idieally you want to stay onthe top island for max effiency in your system (75% effiency for this compressor). You want to make sure that your engine will NEVER get in the surge zone of a compressors map.
To plot and use this you will need to know your engines abilitly to injest air and what boost pressures you want to run.
Just to let you know.... this is a tiny tiny turbo and isnt to suited for a rotary application, maybe if you used 2 of them.
~Mike.......................
From the bottom, left to right is airflow in pounds per minute.
On the left colom from bottom to top is pressure ratio in bar. 1.00 bar is basically ambient pressure (ambient or reletive pressure of the atmosphere is 14.7 psi, this equals O psi of boost) 2.00 bar is 14.7 psi, 3.00 bar is 29.4 psi of boost etc. etc.
The oblong circles or "islands" are the compressors effiency. Idieally you want to stay onthe top island for max effiency in your system (75% effiency for this compressor). You want to make sure that your engine will NEVER get in the surge zone of a compressors map.
To plot and use this you will need to know your engines abilitly to injest air and what boost pressures you want to run.
Just to let you know.... this is a tiny tiny turbo and isnt to suited for a rotary application, maybe if you used 2 of them.
~Mike.......................
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