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Old 06-14-2006, 01:19 AM   #1
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Default has anyone ever measured the charged intake temp

on a 100 degree day what is the temp of the compressed air? m62
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Old 06-14-2006, 09:20 AM   #2
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Hope to know soon. The next 'version' of my LIM will have a thermocouple installed for this very purpose. Along with 2 other fairly major changes. I need that sensor now so that I can characterize the drop in boost charge temperature with the water injection running.

Greyhare (co-worker of mine, membe here, drives a Neuspeed-M45 Eaton-Equipped VW Jetta) has taken some data that might be somewhat relevant to our application. I'll get him to post in here today with his findings.
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Old 06-14-2006, 11:59 AM   #3
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On a ~50* night with a heavy mist I hit 130*f at 13psi boost. My blower is spinning at 15522rpm at red line.

Water injection drops temps by about 20*. The actual drop is probably more but my IAT is only 2" after the water nozzle, there is another 10" to the intake ports.

Without water I see as much as 9.5* KR, with water I see 1* or less on random cylinders.
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Old 06-14-2006, 12:06 PM   #4
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Keep in mind that Mike'* data is a general guide. A typical summer day will be a much bigger change from ambient outside air temps (IAT) and boost charge temps.
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Old 06-14-2006, 12:57 PM   #5
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Quote:
Originally Posted by willwren
Keep in mind that Mike'* data is a general guide. A typical summer day will be a much bigger change from ambient outside air temps (IAT) and boost charge temps.
Very true. I don't have the data on this computer but, from an old dudes memory, on a 90* dry day with water I see IAT'* of 170+.

My numbers will not directly translate but the trends should.
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