Ignition Setup for MembersPage/MarteleurTim
Tim will describe the engine basics (like cyl-count, etc...) on MembersPage/MarteleurTim page to make it possible to help.
I keep distributor only for distribution. I use Hall sensor on crank as a trigger input for the VEMS.
Q: So actually I have to lock the plate in the distributor and remove the vacuumline in order to lock the vacuumadvance and let the distributor only distribute the spark?
A: With the distributor used only for spark distribution, and not timing advance, none of what you described is necessary. The poles in the rotor cap are fixed, that is all that matters for spark distribution.
I have setup the wheel with two bolts 180° separated and +- 60°BTDC.Picture will follow.
Config see MembersPage/MarteleurTim/Config
- How do I determine the correct amount of degrees the trigger passes the sensor before the crank reaches TDC?
- remove a sparkplug so you can measure the piston height with a screwdriver or micrometer gauge. Rotate the engine slowly
- with wrench, from the crank (not cam!)
- or by moving the car, in gear 5
- remove a sparkplug so you can measure the piston height with a screwdriver or micrometer gauge. Rotate the engine slowly
Measure the white dot (paint one if there is none) position precisely, and the trigger position only roughly. The dot is 0..10 degrees BTDC, quite easy to measure. This allows you to adjust the ign_tdcdelay with a TimingLight.
You can also use permanent marker pen and use length-measuring tool (eg. at the circumference of a wheel) and calculate degrees.
OK thanks I will do that.
Some Q's about the first config based on a similar engine of Mattias volvo
- req_fuel=73# req-fuel for 4cyl engine 1755cc and 149cc injectors
- 0x73=115 = 11.5 msec is awfully lot. Half the req_fuel, so the VE values are doubled: 0..200 is better precision than 0..100
- #req_fuel = 6.49 x (D/N/I) = 6.49 x (1755/4/149)= 19.1ms. This is even worse
- divider=01# 4 injectorbanks
- alternate=03
- kpafac=7D # 250 kPa MAP sensor
- kpaoffs=6B
- injopen=00 # keep this 00
- battfac=10
- injocfuel=15 # 21*24usec is a bit too low, 800..1000 usec is a better starting value
- but it depends on flyback, so you want to write about it (powerflyback, low-voltage, high-voltage) if you really want to finetune (it should not be critical unless with very big injectors)
- injrampup_battfac=FF
- injpwm=FF
- injpwmt=FF # PWM-ing disabled
- injpwm6=00
- iac_step_seq=C9
- iac_conf=10 # disable the air-valve based iac (with precise_idle off bit3=0, iac_sol_channel is simply switched on/off slowly, not PWM-ed; but iac_sol_channel is disabled with FF, so no output is altered), only ignition advance based active (00 disables ignition-adjust as well, use that initially)
- iac_max_steps=E8
- iac_tps_thres=05
- iac_cold_idle_temp=A0
- iac_warm_idle_temp=D0
- iac_cold_rpm=65
- iac_warm_rpm=4F
- iac_cold_start_pos=FF
- iac_warm_start_pos=FF
- iac_afterstart_rpm=0C
- iac_afterstart_duration=FF
- iac_afterstart_steps=00
- iac_kp=25
- iac_ki=10
- iac_kd=30
- iac_integral_speed=C0
- iac_integral_limit_dec=33
- iac_integral_limit_inc=E4
- iac_integral_deadband=0A
- iac_deadband=05
- iac_pid_conf=01
- iac_overclose_interval=FF
- iac_ref_pos[0]=60
- iac_ref_pos[1]=5C
- iac_ref_pos[2]=58
- iac_ref_pos[3]=50
- iac_ref_pos[4]=4C
- iac_ref_pos[5]=48
- iac_ref_pos[6]=38
- iac_ref_pos[7]=31
- iac_ref_pos[8]=2F
- iac_ref_pos[9]=2E
- iac_sol_channel=FF # disable iac solenoid output
- iac_ign_advance_change=10
- iac_ign_retard_change=10
- iac_ign_advance_limit=10
- iac_ign_retard_limit=18
- iac_ign_threshold=08
Tables see MembersPage/MarteleurTim/Tables
I want injector sequence h[0]= 2 8 4 1 0 0 0 0
I have connected FETdrivers A B C D to EC36pin 7 19 8 20
Q: Does this correspond with my config and tables?