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has anyone used an ecu to control and accusump valve?
my theory would be to run a table like the attached. effectively it holds peak oil pressure until it drops below the threshold. (haltech elite 1000)
my concerns are all centered around response time, be it lag in the ecu calculation,valve opening speed etc.
i also think a check valve that bypasses the electric valve positioned so it allows oil into the accusump when ever the pressure is greater than whats in the accusump.
what are peoples thoughts? complicating a simple device with little to no benefit?
I'll be interested to see if others chime in. My current project involves a RB26 built for road course and I just do not have the budget for a dry sump setup. Your idea is exactly what I was thinking, accusump controlled by the ecu (link in my case). I believe it would act quick enough to avoid any engine damage. Again I'm no expert by any means, just learning as I go.
I had an accusump controlled by ECU previosly. I had a manual button for pre start priming and then Link Thunder ECU controlled the solenoid. Which Was basically just RPM controlled. I cant remember the exact logic used, but think it was something pretty basic like : RPM > 100, valve = on.
I would honestly recommend just using a mechanical ball valve operated by the driver. The problem with solenoid valves is they are usually pilot operated, meaning they are only designed to be used with pressure in one direction. The accusump can have pressure in both directions. So you need to instal the valve in such a way that it stores pressure in the accusump. Meaning, when engine oil pressure is greater than accusump, it will want to push the valve open anyways.
And solenoid valves dont flow anywhere near as free as a simple ball valve, so the ball valve wins tgere aswell.
The engine didnt last long with the accusump installed either. And I have since organised a drysump for when tge motor is back together.
There are millions of cars on the road that use two step oil pumps (low oil pressure and high oil pressure) or solenoid switchable piston cooling jets. The question is what exactly do you want it to do and does your control system get it done? Is one speed/manifold pressure table with ON/OFF control of one solenoid going to get the job done? Or does it need some complicated logic?
What I would do if I were you is right down plain english logical statements of how you want it to work. "IF this happens, then THIS should happen" and work from there to figure out what hardware and software meets your goals.
Not with an ECU my my accusump is controlled by the PDM 15, It's programmed to energised the solenoid is the engine rpm is above 1000 and pressure is below 2 bar. or when the starter button is engaged for pre-oiling.(could have a dedicated pre oiling button too.) the joy of pdm+keypads
i am not so much trying to open the valve when starting etc.
i am trying to use a threshold and have it only open when oil pressure is below this threshold.
my biggest concern is the speed in which the accusump valve opens?
Andre do you have an opinion?