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russian
russian New Reader
12/18/18 9:11 p.m.
alfadriver said:

I *think* the second pulse is to run the ionization system.  

Nope, this signal originates in combustion detection module and goes into ECU, not to the coil. This is CDM telling ECU whatever it's telling ECU, and I wonder what is it telling ECU under which conditions so that I can use this signal in order to tune engine.

russian
russian New Reader
12/23/18 8:49 p.m.

https://www.youtube.com/watch?v=ZaqVyCWncFc

 

Seem to match a picture from https://www.diva-portal.org/smash/get/diva2:158518/FULLTEXT01.pdf once you flip it - we might be able to have angle of peak cylinder pressure in the logs or on a gauge 

 

russian
russian New Reader
12/31/18 9:25 a.m.

Got it! it was a lot of fun but now I know how to have my Miata knocking while standing still! And ion sense hardware is definitely producing the signal!

https://github.com/rusefi/rusefi_documentation/tree/master/misc/Saab_Trionic_8_Combustion%20Detection%20Module_on_Mazda_Miata_running_rusEfi

https://www.youtube.com/watch?v=g6YsVTBH334

russian
russian New Reader
6/11/19 9:37 p.m.

Someone has just ordered first batch of new microRusEfi board. Need a picture with a banana for scale to highlight that this ECU would be about 3 by 3 inches :)

 

2GRX7
2GRX7 Reader
6/12/19 10:12 a.m.

More info please!

 

alfadriver
alfadriver MegaDork
6/12/19 6:19 p.m.

I missed the replies back at the end of the year- vacation and all.  

Since December, have you figured out what to do with the analog signal?   If there's *any* way you can use that signal to get an idea of percent burn, that can be very useful.  Just one output can be REALLY helpful- crank angle at 50%.  So when it's not knocking (and most modern engines are designed to always be on the hairy edge of knock, BTW)- the best CA50 is 7 deg ATDC.  

Which means that you can use your system to properly self tune the base spark calculation.  And if you went to E85, you could actually spark at the right spot.  Not guessing, but knowing.  

Pretty cool that you got that working.  Instead of being a Patreon, how does one buy a kit?  My needs are very simple...

russian
russian New Reader
6/18/19 9:17 p.m.

To be honest, I've totally switched focus from cool stuff like combustion detection and electronic throttle to boring stuff like usability, usability and usability :)

Please google "rusefi for sale" and you would probably find the answer to your kit question :)

Speaking of usability, I am trying to come up with a way to reflect the state and logic of the ECU in real time. Here's a prototype which shows pieces I am trying but those pieces would probably not make much sense. At the moment the huge obsticale is that we have too little documentation and no one, contributores incuded, remember all the feature and options :) So, I am trying to make software work and explain itself:

 

https://youtu.be/n_pqH-3P3Qc

 

 

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