Hi Folks,

I'm wondering how to monitor for the limits of your injectors when using an Adaptronic ECU ... I'm using the select.

For example, on my PFC I would look at Injector Duty Cycle. I tried to keep it at a max of 80% so that I had some headroom for cold weather.

best,

James

 

This explains the calculation needed.

https://www.rx7club.com/rotary-car-p...ration-834864/

ms of injector on time is in the Adaptronic logs as is (of course) RPM so the question is really what's the easiest way to display duty cycle.

I could load a log in Excel. ... Hmm perhaps there's something in Megalogviewer. I'll have to take a look tonight.

 

Well, "which" duty cycle is the question!

If you're using the staged VE mode, then the ECU will automatically limit the primary injector duty cycle - actually it limits the off time so you have always 0.5ms of off time. This means 95% duty cycle at 6000 RPM. The margin you have then is in the secondary injectors.

You can work it out with some rules of thumb - on the gauges window it shows you two numbers on the injector duration - the first is the primary, second is the secondary. In the log file, all 4 injector outputs are shown.

At 6000 RPM, 10 ms = 100%. So if you're at 9 ms, that's 90% duty cycle.
At 9000 RPM, 100% is 6.66 ms. So 80% duty cycle at 9000 RPM is 5.3 ms.

I could put the primary / secondary duty cycle in the gauges window as well; I'm just worried about cluttering it up. But it sounds like something that people would find useful.

 

It will be nice if we can get a percentage of both pri/sec combined.

 

That's what I was originally thinking as the PFC runs the primary injectors to something like 60% and then drops then to 40% while bringing the secondaries online to 40%. Form here it runs them both up to 100%. My numbers are likely off a bit but the point is an average would make sense here. (looking forward to the day when I don't have to baseline my thinking against the PFC)

Given that the Adaptronic is running the primaries up to 95% and then starting the secondaries from 0% (or close to it?) I'm not so sure that an average is what makes sense.

I want to know when I'm approaching the limit of my fuel system. So, a duty cycle % for the secondaries would do the trick.

I just looked through my last log file. It looks like there's only one column entry for injector ms? I'm assuming that it just switches from primary to secondary when the primaries are at 95%? Another column in the log that recorded duty cycle the same way would work.

 

The current software shows all the injector outputs, but only a duty cycle based on output #1. I'll add that in.

 

All,

It somehow didn't sink in that I was running old software. I just upgraded to 10.108 for reasons unrelated to this post and voila, I have ms for all four injectors.

James

 

10.124 is available now as well - a few more improvements :

10.124 - some improvements - Select FW

Next things I'm working on are the PLX output and then integrating that the PLX input and the Innovate input.