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Old 09-05-2005, 04:16 PM
Gert_ Gert_ is offline
Junior Member
 
Join Date: Mar 2005
Location: The Netherlands
Posts: 20
Default Re: nozzle flow rate

Quote:
Originally Posted by dsmtuned
RPM is one of the factors that determines injector duty cycles. :wink:

Craig
To calculate duty cycle:

(60 / (RPM / 2)) * 1000 = Msec ( maximum injector time available at this rpm)

To find duty cycle:
(Inj time / Msec) * 100 = Injector Duty.

If you want to know exact duty cycle at any rpm, you have to know the exact injection time, so you must have some logging tool.
Now, if you have logging files, you can make an excel sheet, and calculate what fuel is injected, and how much water is needed at any * percentage.
That is not an garantue that it is working correct right away, at least, not at my car. After the math, there are some adjustments needed, based on knock, and intake temps.

Gert
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