Conversions
#1
AudiWorld Senior Member
Thread Starter
Conversions
I found this handy conversion chart for injectors.
My VAGcom logs show injector timing in ms; I am still running stock injectors and stock fuel pressure on my 1998 A4 1.8T AEB
Is there an estimate to derive the flow (in cc) from injector time (my seems to max out at 16.32 ms from 2600-7000 rpm)?
My VAGcom logs show injector timing in ms; I am still running stock injectors and stock fuel pressure on my 1998 A4 1.8T AEB
Is there an estimate to derive the flow (in cc) from injector time (my seems to max out at 16.32 ms from 2600-7000 rpm)?
#2
AudiWorld Senior Member
Thread Starter
This is the handy injector conversion chart:
Conversions
• 500cc per minute is approximately equal to 49lbs per hour which is equal to approximately 100hp.
• lbs/hour = cc per minute / 10.2
• lbs per hour = HP / 2.04
• cc per minute = lbs per hour x 10.2
• cc per minute = HP x 5
• HP = cc per minute / 5
• HP = lbs per hour x 2.04
Conversions
• 500cc per minute is approximately equal to 49lbs per hour which is equal to approximately 100hp.
• lbs/hour = cc per minute / 10.2
• lbs per hour = HP / 2.04
• cc per minute = lbs per hour x 10.2
• cc per minute = HP x 5
• HP = cc per minute / 5
• HP = lbs per hour x 2.04
#3
AudiWorld Senior Member
Thread Starter
My log shows 16.32 ms injector time all the way to 7000 rpm.
Is that a realistic number of something the ECU spits out as a 'limit number'?
If my math is correct:
7000 rpm = 116.7 rev per sec
For a 4 stroke at 7000 rpm:
34.3 ignition strokes per sec or 34.3 ms duration per ignition stroke.
A injector time of 16.32 would mean the injector is 'open' for more than half of a stroke time?
Is that a realistic number of something the ECU spits out as a 'limit number'?
If my math is correct:
7000 rpm = 116.7 rev per sec
For a 4 stroke at 7000 rpm:
34.3 ignition strokes per sec or 34.3 ms duration per ignition stroke.
A injector time of 16.32 would mean the injector is 'open' for more than half of a stroke time?
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