MembersPage/RallyeNLD/Questions (2007-07-31 14:09:50)
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Running questions and trouble


I currently have trouble with the triggering, I hope someone can help me with this. I am running batch injection and wasted spark ignition. Relevant config is shown below.


primary_trigger=01

secondary_trigger=02

tooth_wheel=3A

trigger_tooth=02

another_trigger_tooth=1E

crank_minper=EA

tooth_wheel_twidth1=02

tooth_wheel_twidth2=06

ign_tdcdelay=D8

ign_crank_advance=12

ign_out=70

ignchmax=01


h[0]=0F 00 00 00 00 00 00 00

h[2]=00 10 00 10 00 10 00 10


Firmware 1.0.69

The missing tooth occurs 120 degrees or 20 teeth BTDC (60-2 wheel). Therefor I used for ign_tdcdelay 0xD8 (216 * 0.5 = 108 degrees). Together with trigger_tooth 0x02 this makes 12 + 108 = 120 degrees. Right?

Now the engine won't start and will kick back during cranking. For some reason I tried ign_tdcdelay = 0x5A (90 * 0.5 = 45 degrees). Together with trigger_tooth this makes 12 + 45 = +- 60 degrees) which happens to be half the real value of 120 degrees. The engine is running sweet then, especially at increased engine revs.

Q. Although the engine is running I would like to know what mistake I made. Did I use the wrong factor (2 instead of 0.5) or something else is wrong.

Tank you in advance.