MZ - Ignition controlled by CPU

[James]

Hello everyone,

My name is Jakub and I am from Poland. I graduated University of Technology and this topic is about my master thesis I made it 4 years ago as a laboratory station and some time ago implemented it in a motorbike MZ ETZ 250.I would like to present my own electronic ignition unit with programmable map. Let me know if you are interested in such device. I will answer your questions with pleasure.


Ignition cut off at 6500 rpm (do not suggest the value on tachometer):
https://www.youtube.com/watch?v=ewkm1O29rOw

How it looks without cover:
https://www.youtube.com/watch?v=3SpDF1CzT08

regards

[Puffs]

Removed

[James]

Thank you for complex answer. The graph you can see in my first post is from Kanuni factory in Turkey. Someone obtained this graph and put it on the internet.
As I wrote in my first post - tachometer shows inaccurate values. It is really 6500 rpm at the cut off. I changed the map a bit, when crankshaft exceeds 6500 rpm then the controller delays ignition to the same angle as at ~1000 rpm. I will describe some more details at the next weekend.

[Puffs]

Removed

[James]

I use C programming language in my device. I can change the timing of ignition advance from 45 degrees BTDE to 0 degrees. I think it could by user friendly because you can save changes in flash memory up to 10 000 times. You only need to know how to do it. I use excel to convert real times to uC impulses.

[Puffs]

Removed