- Sun Oct 06, 2024 6:48 am
#69768
I know this is going to be an issue. Just asking if anyone has worked around it before. I've been reading the forums and researching for days. I've spent a several hours in the code and still trying to get my head around it.
So I will be starting the V-twin engine by hand due to weight limitations. More specifically by flipping a propeller by hand. That means I need to get through intake to TDC without the speeduino losing it's crank position. Here are my assumptions from what I have figured so far.
1) The crank position calculation can not tell if the crank reverses any amount, it will count that as a forward pulse.
2) A slow down or stop could be interpreted as a missing tooth.
Minus any solutions you all have the only things I can think of are to trigger an injector pulse with the MAP sensor pressure drop, and add a separate crank sensor with one tooth that triggers just past TDC. My thinking is that should run well enough to get the crank angle figured out. No idea how much coding that would take yet.
Or maybe putting the missing tooth right before TDC as flipping the prop through compression how it's done. This only works if the system can sync up that fast. Again, not understanding the code well enough yet.
So I will be starting the V-twin engine by hand due to weight limitations. More specifically by flipping a propeller by hand. That means I need to get through intake to TDC without the speeduino losing it's crank position. Here are my assumptions from what I have figured so far.
1) The crank position calculation can not tell if the crank reverses any amount, it will count that as a forward pulse.
2) A slow down or stop could be interpreted as a missing tooth.
Minus any solutions you all have the only things I can think of are to trigger an injector pulse with the MAP sensor pressure drop, and add a separate crank sensor with one tooth that triggers just past TDC. My thinking is that should run well enough to get the crank angle figured out. No idea how much coding that would take yet.
Or maybe putting the missing tooth right before TDC as flipping the prop through compression how it's done. This only works if the system can sync up that fast. Again, not understanding the code well enough yet.