FLYBYU
VIP Member
Does anybody know the frequency on are injectors?
What are you trying to measure this with? An oscilloscope?
RJH
TY 4 Stroke Junkie
Are you asking about the "number of samples / sec" it does? I don't have any manuals - but I would guess 100 / sec.
FLYBYU
VIP Member
guardrail said:
We tried with that and thought our readings were right. They were 60HZ at idle and 105HZ at 3000 rpm, but that frequency range didn't work. Someone told me that an oscilloscope measures milliseconds not seconds. The formula i found at bosch website was rpm x no. of cylinders divided by 2 = divided by 60 = divided by no. of cylinders = frequency each injector is working at per rpm
FLYBYU said:
Oscilloscopes measure time not frequency.
Take the time meaurement you get on the o-scope( measure from the leading edge on the first pulse to the leading edge on the second pulse) then divide that into 1. That will give you the frequency. Frequency=1/time
Hope this helps
RJH
TY 4 Stroke Junkie
Oh that way…
Sounds like an interesting thing to do…your numbers are going the right way.
However….I think, the squirt time length and frequency would change when you added load or changed air quality.
Sounds like an interesting thing to do…your numbers are going the right way.
However….I think, the squirt time length and frequency would change when you added load or changed air quality.
You'll probably see a square wave on the scope. The flat horizontal part on the top of the square wave would be the squirt time. The bottom part would be the "off time"
