Forum made EFI?

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Lendo

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Perhaps 'Preaching to the enlightened', if In-tank fuel pumps run dry they burn out.
George
 

Vigilant1

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Valery,
Thanks for the update. It is nice to see actual hardware. Looking forward to seeing more details on this system.
 

Vigilant1

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Valery, no rush, but when you can add info about your EFI, I'd be interested. I think for airplane use TPS isn't important, but it would be interesting to know what you are planning (manual mixture control ? Open loop? Backup modes in case of various sensor failures, etc.) I think I'm correct in saying you plan to use the Speeduino code as your software (and Tuner Studio as the user interface for setup). You've had several EFI projects, it is hard to keep track.
Again, no rush at all.
 

rv7charlie

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Would you mind sharing the part number or source for that right-angled filter sock? I've played around with using automotive filter socks instead of 'finger strainers' in wing tanks (actually used one in an RV4 tank), but most of the ones I've found have vertical fuel ports which make them harder to adapt.

On a different subject, triggered by the image above. You probably already know this, but I made the unpleasant discovery that many flexible lines, even ones made for fuel, won't survive inside a fuel tank. I made a fuel pickup for a Kolb using the blue urethane tubing commonly used for fuel lines in the USA, and it rotted off of the steel tank fitting. Fortunately, it happened on the ground, while the plane was not even running. Fuel was ethanol-free premium auto gas, with Walmart 2stroke oil.
 
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jbiplane

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source for that right-angled filter sock
Only know it is for Yamaha Mio

that many flexible lines
Yes, it is for paramotor guys who are lazy modify fuel tank. I going to use neoprene or viton hoses inside the tank and Tygon outside, hope will survive. Most radical is to use PTFE tubing/ Teflon. Had problems with blue urethane tubing as well.

I prefer small assemblies of small scooters like on photo below
11.jpg
 
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jbiplane

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Speeduino50.jpg
Moving to opensource firmware "Powered by Speeduino" board. An initial attempts. Planned fit to 50x50mm universal board with 2 injection and 2 ignition channels. Magnetic TPS, IAT and MAP on board (optionally external for same PCB). ECU can be integrated to throttle body or be standalone.
 

Vigilant1

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Thanks for the update. For what is worth: I suspect that going a little "overboard" on filtering/cleaning up power and sensor inputs etc will go a long way toward making the product more desirable for acft use, and can also set your product apart from a "stock" Speeduino board. The power can be fairly "dirty" with some engines. Likewise, going with the very cheapest components (e.g. capacitors) would probably be a mistake.
Thanks again for the update.
 

jbiplane

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set your product apart from a "stock" Speeduino board
According our previous experience "stock" Speeduino suffers of contact and "antena" issues of Arduino daughter
board located on main board. So we will make standalone board. Related our in house EFI it have some "know hows"
features and algorithms and will be used only on my company engines.
 

AdrianS

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Looks good.

One thought:
From my limited experience with electronics in cars, assume that just about anything can be wired up wrong, and design protection accordingly.
There's nothing more frustrating than troubleshooting something that turns out to have "blown up" due to a simple wiring mistake.
 

jbiplane

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anything can be wired up wrong
So we trying to make very easy to instal fuel injection and instalation kit integrated to throttle body with precalibrated sensors on PCB
= intake air temperature, atmosphere pressure, map pressure, throttle position sensor
User have only attach throttle body and correctly place on engine crankshaft position sensor

New Speeduino powered 50x50mm ( 2x2 inches) PCB design = injection + ignition
for most of 1,2 and 4 Cylinder Motors (2,4takts and wankels almost ready
Top.jpgBottom.jpg
And micro video which explain how setup EFI without expensive equipment and even without O2 sensor
 
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