History of VehicleFitment/TwentyFourPlusOneTrigger
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2007-05-20 20:44:43 . . . . MembersPage/PhatBob [corrected RPM constants]
2007-05-20 20:41:10 . . . . MembersPage/PhatBob [corrected RPM constant]
2007-05-20 08:56:49 . . . . MembersPage/PhatBob [Trigger configs]
2007-05-20 08:53:23 . . . . MembersPage/PhatBob [24+1 trigger configs]


Changes by last author:

Added:
Firmware versions 1.1.xx

The following cofigurations are for 12 crank (24cam) tooth primary trigger, single cam tooth secondary trigger.

As found in Toyota, Honda, Mazda, and Nissan with CAS converter disk ( VehicleFitment/Nissan )

== 4 Cylinder ==

In config.txt

* primary_trigger=07 # coil type, filtering, rising edge.

* secondary_trigger=19 # camsync, rising edge.

* tooth_wheel=18 # decimal 24 tooth (between cam pulses)

* trigger_tooth=01 # or upto 05

* ign_tdcdelay=B4 # 90/0.5 = 180 (half degrees)

* another_trigger_tooth=06 # 24 tooth/4 cylinders

* tooth_wheel_twidth2=00 # No missing tooth

* tooth_wheel_twidth1=78 # decimal 120 (30deg / 0.25)

* rpmk[0]=0B

* rpmk[1]=B8 #RPM constant for 4 cyl = 3000 (=0x0BB8)

* alternate=13 # injgroups 3..0 (fire all banks during cranking)

* ignchmax=03 # ignition 3..0

* cam_sync_r_edge_phase=33

* cam_sync_f_edge_phase=46

* reset_engphase_after=40 # since 720/0.25 = 2880%256 = 64

In tables.txt

h[1]=00 12 0C 06 00 12 0C 06 # another_trigger_tooth=06

h[2]=10 30 20 00 10 30 20 00 # Firing order: 1, 3, 4, 2

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== 6 Cylinder ==

In config.txt

* primary_trigger=07 # coil type, filtering, rising edge. Alternatively 06 would be falling edge (could be suitable for HALL, but not for VR)

* secondary_trigger=19 # camsync, rising edge; alternatively 1d is same, but with filtering

* tooth_wheel=18 # decimal 24 tooth (between cam pulses)

* trigger_tooth=01 # or upto 03

* ign_tdcdelay=C4 # 98 crankdegrees

* another_trigger_tooth=04 # 24 tooth / 6 cylinders

tooth_width is allowed to be higher than 64 degrees. The missing tooth width is the upper byte. (there is no missing tooth anyway). Use 0 if the tooth distance is less than 64 degrees.

* tooth_wheel_twidth2=00

* tooth_wheel_twidth1=78 # decimal 120, that is 30 crankdeg per tooth

* rpmk[0]=07

* rpmk[1]=d0 # RPM constant for 6 cyl = 2000 (=0x07d0)

* alternate=15 # injgroups 5 .. 0 (fire all banks during cranking)

* ignchmax=05 # ignition 5..0

* reset_engphase_after=40 # since camsync is used

In tables.txt

h[1]=00 14 10 0C 08 04 .. ..

h[2]=10 60 50 40 30 20 .. ..

-----

== 8 Cylinder ==

In config.txt

* primary_trigger=07 # coil type, filtering, rising edge.

* secondary_trigger=19 # camsync, rising edge.

* tooth_wheel=18 # decimal 24 tooth (between cam pulses)

* trigger_tooth=01 # or upto 05

* another_trigger_tooth=03 # 24 tooth/8 cylinders

* tooth_wheel_twidth2=00 # No missing tooth

* tooth_wheel_twidth1=78 # decimal 120 (30deg / 0.25)

* cam_sync_r_edge_phase=33

* cam_sync_f_edge_phase=46

* rpmk[0]=05

* rpmk[1]=DC #RPM constant for 8 cyl (12000/8) = 1500 (=0x05DC)

* ign_tdcdelay=B4 # 90/0.5 = 180 (half degrees)

* alternate=17 # injgroups 7...0 (fire all banks during cranking)

* ignchmax=07 # ignition 7...0

* reset_engphase_after=40

In tables.txt

h[1]=15 12 0F 0C 09 06 03 00

h[2]= <depends on firing order>