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injector open time?

Posted: Thu Aug 22, 2013 1:55 am
by russian
Guys, what is the realistic model of a fuel injection in terms of fuel_amount as function of powered_time?

I mean there is CC value, but I guess there is also some time to open it? How much difference does actual voltage make?

Please share your experience. If that matters, mine are Denso like 230cc #195500-2180

Re: injector open time?

Posted: Thu Aug 22, 2013 2:07 am
by Fred
A big difference. You MUST use a curve and you MUST test YOUR injectors with YOUR fuel pressure and YOUR wiring and YOUR inj driver circuit, or it's wrong. http://builds.freeems.org/firmware/dev/ ... tml#l00132

Re: injector open time?

Posted: Thu Aug 22, 2013 2:18 am
by russian
And how do you test this exactly? :)

Re: injector open time?

Posted: Thu Aug 22, 2013 2:59 am
by Fred
I plan to test mine with a 500w variac and 50A 12V transformer powering my vehicle instead of a battery, but through 1 Farad of capacitance. This should give me complete control over voltage at which point I can simply adjust until changing voltage doesn't change the wideband reading.