ViPEC v44 Trigger Calibration

[johan sv]

Hi!

I've a problem when it comes to calibrating my crank trigger. I have a 6 cyl which I'm running wasted spark. There are 6 pins in my flywheel and the sensor is in a fixed position. I've connected a LED to the 5V signal to the ignition. The problem is that I only get a "spark" when I have the Trigger Mode set up to 1 tooth per TDC. But in this setting I can only adjust timing by moving the sensor, which I can't. I don't get a spark when running Trigger Mode - Multi Tooth. Why is this?

Thanks!

Johan

[Adamw]

Multitooth will be the correct mode. In trigger 2 settings did you set that to "none"?

[johan sv]

Thanks for reply Adam. Problem is that I don't get any signal to the coils in Multitooth. Any thoughts on this? Reluctor or Hall/Optical does not matter. I have even tried to lower the threshold for the signal to minimum. I also have a trigger on the cam so this is set up as Trigger 2.

 

 

[Scott]

Edited:

I just read your last post better. If you have 6 teeth on the crank (Trig 1) and 1 tooth on the cam (Trig 2). You should be able to set the Trig 2 sync to 'Cam pulse 1x'.

Scott

Edited January 9, 2017 by Scott
I wasn't paying attention

[johan sv]

Hi Scott. Thank you. So in this set up the crank trigger should automatically calibrate/synk itself? This is the setting I have used. Trig 2 sync to ´cam pulse 1x´. But the ignition was about 120 degrees of when I checked with my timing light. Also, I still wonder why I don't get a spark as soon as I change Trigger Mode to Multitooth. All other settings are the same but the ignitionsignal disappers.

Johan

[Simon]

Tooth count is 6 teeth not 3 on the crank?

3 teeth would give you 6 pulses for a full engine cycle (two turns of the crank) but this is entered as 3 teeth location crank.

 

 

 

[johan sv]

Tooth count is 6 teeth not 3 on the crank?

3 teeth would give you 6 pulses for a full engine cycle (two turns of the crank) but this is entered as 3 teeth location crank.

 

 

 

6 teeth on the flywheel.

[Simon]

Can you post a image of you trigger settings or copy of the map in the multi tooth mode so we can check them over.

 

[johan sv]

Can you post a image of you trigger settings or copy of the map in the multi tooth mode so we can check them over.

 

Sure. This is the setting that I want to use but with the ignition signal disappears. 

[Simon]

Those are what I would expect to see.

Do you get an RPM reading and no trigger errors in this mode?

 

 

[johan sv]

No trigger errors that I have seen. Haven't checked rpm. You mean in the LOG Analysis? I will have to check this weekend. Car is on another location. Anything else that I can check or try?

[Simon]

Just in the Run times (F12 or R key) then in the triggers limits tab.

 

[johan sv]

Thanks. So I solved the problem. Turned out to be the cam sensor. Now I need to calibrate. I was hoping that it would synk auotomatically but it is 180 degrees off. I seems to be easy but I don't understand what the third box is for (the one in yellow). Do I need to bother with this one? Anybody?

 

 

Edited February 4, 2017 by johan sv

[Adamw]

If you have the ignition timing locked to 10degrees like the image above, then you must adjust the offset number until your timing light shows spark is occurring at 10 deg. If you think it is about 180deg out then try adding or subtracting 180 from the offset number initially. Once you have the offset set correctly so that the engine is idling at 10deg, try revving the engine while watching the mark with a timing light to check that timing does not drift. If it does move with rpm then you adjust the delay number until it is stationary. Most of the time about 50 or 75 microseconds is about right

Edited February 4, 2017 by Adamw

[johan sv]

If you have the ignition timing locked to 10degrees like the image above, then you must adjust the offset number until your timing light shows spark is occurring at 10 deg. If you think it is about 180deg out then try adding or subtracting 180 from the offset number initially. Once you have the offset set correctly so that the engine is idling at 10deg, try revving the engine while watching the mark with a timing light to check that timing does not drift. If it does move with rpm then you adjust the delay number until it is stationary. Most of the time about 50 or 75 microseconds is about right

Thank you! The ignition turned out to be 150 deg off, which surprised me. I thought that the software would synk against the cam sensor, which shoult indicate TDC cyl 1. I was expexting that the ignition would synk itself. But I'm not sure the pin/indicator in the cam is set to TDC cyl 1. Maybe it ws set to an offset co accommodate the old ignition system (early 1990s alfa v6)?

[Adamw]

The cam sensor is only to tell the ecu if the next TDC event is compression stroke or exhaust stroke, its position is not important.  The actual engine position information (i.e. TDC) comes from the crank sensor.