I found the settings i can read RPM and i have IGN out drriving , but the RPM is fluctating .
Investigating trigger setting for Lotus 6+1 trigger wheel.
- currently no camsync
Please see MembersPage/CustomExtraTooth
(but also similar to Honda extrapulse and shortgaptrigger below).
Config guidelines
Starting from Honda K20
- Extrapulse = enabled
- strig_validation=08 only extrapulse, nothing else (no cam_check_pol )
- tooth width = 60 (not 30)
- next trigger tooth (distance) = 3 (not 6)
- reference tooth= 0 3 0 3 (not 0 6 0 6)... Neglect VT warning...
- advanced filtering=enabled (1/4 of values below will be effective ??)
- normal rel min=12.5% max=119% (3.1 - 30% for extrapulse case ? So 3.1 ..30% will be considered SHORT, and detected as extrapulse)
- missing rel min=175% max=300% (44-75% for extrapulse case ? So 85..100% normal tooth will look LONG)
Sounds like
- InputTrigger/ShortGapTrigger - The fiatstilo bit must be enabled for both primary_trigger and secondary_trigger.
- multitooth advanced filter (you can tweak these advanced filter tresholds):
- neglect longer gaps (150 .. 200% relative), and trigger on the shorter gap (appr 30 .. 34% relative).
primary_trigger=29 (decimal 41)
tooth_wheel=02
The following seems to be the key to get it work:
toothrel_normal=01 (normal tooth: 16 .. 100% Really tried 40..50% or so ?)
toothrel_missing=F0 (missing tooth: 125 .. 300%)
- nr of tooth on wheel=06 ? (full engine cycle=12 tooth)
- tooth_width = 60 crankdeg (angular width of tooth... NOT 180, of course)
- Next_trigger_tooth=03
- trigger tooth=01 (00 or 02 would likely work also)
---
similar to Honda K20 2005+ but less teeth
I tried the honda k20 12+extra trigger settings but not read RPM, no ignition.
- with what changes ?
- Exact .vemscfg ???
Logs
- http://www.vems.hu/files/Norbitron/noadvfilter.vemslog with advanced filtering
- http://www.vems.hu/files/Norbitron/advfilter.vemslog -without filtering
- http://www.vems.hu/files/Norbitron/adv%20filter.vemscfg -vemscfg
Should be possible to configure (no firmware mod needed)
- InputTrigger/HondaFTwentyTrigger
- says the extrapulse is after the normal (10,20 not 20,10)
- also mentions 120, 120, 40,80, 120, 120, 120 which is similar pattern
- 60, 60, 15, 45, 60, 60, 60 is about right ? Please confirm, check triggerlog.
Or maybe
would be easier starting point ? Either way, just need some tweakinf anyway
To compare the exact position of the extra pulse to TDC is very hard because the engine is rear mounted.