Arduino Electronic Boost Controller Project
#49
I had two different overboost protections systems in the Vitesse system, but had them both turned off to see how far I could push it. Never found the answer, except that 30+psi without any tuning is too much.
#50
#51
Since it's a solenoid valve it's either fully open or fully closed. To regulate boost pressure it cycles faster or slower.
#52
How else will you regulate the pressure electronically with in a split second
#53
Did my first live testing today. Several small problems at this point. The rpm signal is getting noise from the solenoid and occasionally gives a bad rpm reading. This caused some issues. With out the solenoid attached rpm was rock solid. Speed and gear calculations worked great when the rpm readings were correct. Going to have to figure out how to add isolation the rpm signal. I am waiting on my oscilloscope to arrive. Also, when the EBC in not on and the rpm signal is hooked up, the car will not start. Finally, this MAC valve is loud, much louder than my Prospec solenoid. Might have to look at some other solenoid options.
#54
Everything is working perfectly in an open loop mode. I have made several test runs and I have boost by gear. Right now I can quickly change between 10 psi, 15 psi, 18 psi, and 22 psi setting maps (each maps has adjustable individual gear boost). Maps are changed by simply pressing a button.
I have designed a Front Panel Express gauge panel that will accommodate the Arduino LCD Shield. I also have added AFR to the EBC (by way of the wideband linear output) so that the controller is aware of AFR and have built in boost safety based on AFR
Now I am working on some different EBC strategies to optimize spool. Since the EBC is boost and rpm aware, it is interesting to look at when the dual port valve should be closed.
I have designed a Front Panel Express gauge panel that will accommodate the Arduino LCD Shield. I also have added AFR to the EBC (by way of the wideband linear output) so that the controller is aware of AFR and have built in boost safety based on AFR
Now I am working on some different EBC strategies to optimize spool. Since the EBC is boost and rpm aware, it is interesting to look at when the dual port valve should be closed.
#59
The EBC is very simple compared to a complete standalone. As much time as I have spent, I can only imagine the time Rogue has invested in him DME!
Thanks Patrick!
#60
Drifting
Joined: Aug 2009
Posts: 2,239
Likes: 2
From: Bangkok, Thailand, Milpitas, CA & Weeki Wachee, FL
Beyond awesome!!! Can't wait! Might have the car back this weekend. Give me a ring if you get a chance. He refused to "fit" my headlight cover, like to pick your brain on sanding/filing techniques.