##      
 ##      
 #####   
 ##  ##  
 ##  ##  
 ##  ##  
         

 _____ 
/  __ \
| /  \/
| |    
| \__/\
 \____/
       
       

      _ 
     | |
  _  | |
 | |_| |
  \___/ 
        

 _   _ 
( ) ( )
| | | |
| | | |
| (_) |
(_____)
       
       

         
         
  ### ## 
 ##  ##  
 ##  ##  
  #####  
     ##  
 #####   

IMPORTANT: enter the case-INsensitive alphabetic (no numbers) code AND WRITE SOME SHORT summary of changes (below) if you are saving changes. (not required for previewing changes). Wiki-spamming is not tolerated, will be removed, so it does NOT even show up in history. Spammers go away now.


Visit Preferences to set your user name
Summary of change:
'''Ignition (output, ignadv and dwell) page for MembersPage/EricN''' Note that trigger is on MembersPage/EricN/Trigger '''Even-fire 6-cyl''' '''using 6 LS1 coil near plug ignition transformers''' This is what I know so far: 4 wires per coil * 12v * ground * ground to the ecu * trigger wire Factory look is eventually the goal, but for now, I want to practice on this engine the same setup that will be in my racecar when it is actually built, then I will revert back to more simplistic setup. We usually use ignition channel 2 and 5 for these (recent tradition, that assembled ECMs are setup with ign channel 2 and 5 this way unless ECM goes for V8 with COP: very handy when IgnitionPage/TransformerWithAmplifier is to be used), you need 4 more logiclevel channels (for total 6). MembersPage/MarcellGal/EngineSwap also uses similar logic-level ign setup for IgnitionPage/TransformerWithAmplifier ---- '''Ignition sequence''' * cyl order 1 5 3 6 2 4 * wiring ** ch00 EC36pin35 goes to cyl 1 ** ch01 EC36pin33 goes to cyl 2 ** ch02 EC36pin34 goes to cyl 3 ** ch03 EC36pin36 goes to cyl 4 ** ch04 EC36pin11 goes to cyl 5 ** ch05 EC36pin12 goes to cyl 6 The matching channels found on GenBoard/Manual/DigitalOut/Table (remember h[2] is traversed backwards] h[2]=05 0A 05 0A 05 0A 05 0A ---- '''Trigger''' - for LS1 ignition transformers I have measured the trigger signal: (originally measured it as dwell but now realize that I can't measure dwell, it is not accessible. * Trigger signal is a constant 4 volt, logic level signal. * Trigger time varies. ** Start/Idle 1 ms ** 3000 rpm approx 4 ms ** Full throttle/5500 rpm .55 ms ---- '''How to output a logic-level ignition signal''' Use the same driver as the original IGBT is driven from, just solder a jumper wire in place of the IGBT (don't solder IGBT for given channels), between the gate and drain the 2 pins closest to the EC36 connector, and use ign_out=70 in your config /Emil ---- I connected a coil just to see if all works. While my 2 year old turned my "engine" over (drill on a modified distributer) I would change the dwell in MegaTune while measuring the voltage at the trigger signal with a scope. The voltage "on" time is basically exactly half of what I set it to in MegaTune. Is this normal?? I expected them to be the same. I assume there is no simple way to vary the trigger "on" time with RPM so I played with the various settings. To get 5.5 ms I set dwell to 11, very violent spark, don't expect the coils or plugs to last that long at that setting. Set it to 1 ms (2 in megatune) and the spark is ok, will jump a gap of about 1/2 inch, didnt push it any further for fear of arcing to the ecu. Set it to 3 ms and the spark "looks" about right.
Optional: Add document to category:
Wiki formatting: * is Bullet list ** Bullet list subentry ... '''Bold''', ---- is horizontal ruler, <code> preformatted text... </code> See wiki editing HELP for tables and other formatting tips and tricks.