Reading compressor maps?
02-23-2008, 07:04 PM
#11
1.0 BAR
Join Date: Nov 2005
Posts: 431
Re: Reading compressor maps?
Originally Posted by Schwitzer Turbo
Have you guys ever come across a Turbo, you get the Compressor map and it says its only good for 1.5 bar boost. but it makes postive power all the way to 2.2 bars.
Is this a Common occurance in the turbo world?
Is this a Common occurance in the turbo world?
02-23-2008, 07:52 PM
#13
3.0 BAR
Join Date: Aug 2003
Location: NE-PA
Posts: 4,666
Re: Reading compressor maps?
Originally Posted by c0mpl3x
high boost = high iat's, thus the need for interheaters
02-23-2008, 08:03 PM
#14
1.5 BAR
Join Date: Apr 2006
Posts: 676
Re: Reading compressor maps?
Most of the time, when you get to higher pressures it drops down considerably. Basically what happens is there is generally one PR where the turbo flows the most air. So even if I'm running much higher pressure than that, once that PR is maxxed out flow wise, the pressure keeps dropping as the compressor can offer more air flow at lower PRs.
Using the above comp map. If I ran 3.5PR, I'd run out of airflow at around 48lb/min. So let's say my engine wants to keep making power, well the pressure will drop down to around 3.0PR so it can flow the most amount of air possible.
Using the above comp map. If I ran 3.5PR, I'd run out of airflow at around 48lb/min. So let's say my engine wants to keep making power, well the pressure will drop down to around 3.0PR so it can flow the most amount of air possible.
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