Search found 45 matches

by jbiplane
Sun Mar 22, 2020 11:01 am
Forum: Hardware
Topic: EFI for small engines
Replies: 100
Views: 19557

Re: EFI for small engines

I hoped it will be usefull project. The idea was somebody of local team will design and sell open source nano boards. I can help in test and make available complete kits (milled and casted parts). Seems nobody are interested, so I'll continue with freelancer (speeduino compatible stand alone board) ...
by jbiplane
Sun Mar 22, 2020 5:12 am
Forum: Hardware
Topic: EFI for small engines
Replies: 100
Views: 19557

Re: EFI for small engines

It would be nice is somebody make "nano EFI" hardware compatible with Tuner Studio...
by jbiplane
Sun Mar 22, 2020 3:28 am
Forum: Hardware
Topic: EFI for small engines
Replies: 100
Views: 19557

Re: EFI for small engines

At moment one engineer makes for me 2 variant of ECU. 4+4 and integrated to throttle. But I dont know schematics...
by jbiplane
Sat Mar 21, 2020 10:27 pm
Forum: Hardware
Topic: EFI for small engines
Replies: 100
Views: 19557

Re: EFI for small engines

Better start with ECU itself. Test platform is secondary...
by jbiplane
Fri Mar 20, 2020 1:38 am
Forum: Hardware
Topic: EFI for small engines
Replies: 100
Views: 19557

Re: EFI for small engines

Then possible use portable electrical generator or water pump. Both adjustable.
by jbiplane
Thu Mar 19, 2020 3:38 pm
Forum: Hardware
Topic: EFI for small engines
Replies: 100
Views: 19557

Re: EFI for small engines

kb1gtt wrote:
Thu Mar 19, 2020 9:14 am
How do I attach an alternator to it? I would need a method for adding a load to it.
I use simple to make load - try to google wooden bar dyno https://www.youtube.com/watch?v=H2KGh3Bm238&t=16s
by jbiplane
Wed Mar 18, 2020 2:10 pm
Forum: Hardware
Topic: EFI for small engines
Replies: 100
Views: 19557

Re: EFI for small engines

Might be best to purchase an engine. https://www.amazon.com/Predator-212cc-Horizontal-Shaft-Engine/dp/B005U31ORU/ref=pd_bxgy_img_2/147-4872417-1923945?_encoding=UTF8&pd_rd_i=B005U31ORU&pd_rd_r=69508cdd-317b-4bee-9253-bf29db4f328b&pd_rd_w=Z60ez&pd_rd_wg=eMjrX&pf_rd_p=9d05ca86-8760-4334-a147-e5d5836a...
by jbiplane
Wed Mar 18, 2020 6:04 am
Forum: Hardware
Topic: EFI for small engines
Replies: 100
Views: 19557

Re: EFI for small engines

All EFI System supply should rely on small onboard generator or small external battery.
We have max 30W or less for whole system, no more than 10w on fuel pump, and about 15w on all remaining...
by jbiplane
Tue Mar 17, 2020 2:55 pm
Forum: Hardware
Topic: EFI for small engines
Replies: 100
Views: 19557

Re: EFI for small engines

Seems the most demanded will be - stationar 4-stroke engines used for emergency electricity generation (yes DIY inverter style generator could be good) - scooter 2-strokes 50cc and 90cc - small outboard engines - rc model gas engines - paramotor engines ... I saw you already have showblower engine t...
by jbiplane
Tue Mar 17, 2020 9:41 am
Forum: Hardware
Topic: EFI for small engines
Replies: 100
Views: 19557

Re: EFI for small engines

We tryed 2 units which get in arduino shop in my city, work fine with rectangular magnet.
by jbiplane
Tue Mar 17, 2020 3:23 am
Forum: Hardware
Topic: EFI for small engines
Replies: 100
Views: 19557

Re: EFI for small engines

AS5030-ATST magnetic sensor gives 1,4% angle error if rotation center of magnet deviate 0,25 mm from ideal. It is very acceptable.
by jbiplane
Sun Mar 15, 2020 6:27 am
Forum: Hardware
Topic: EFI for small engines
Replies: 100
Views: 19557

Re: EFI for small engines

I saw the Stihl links above. I recall they did a version of direct injection. Direct into the cyl, but not while under pressure. No. Stihl inject into crancase. I contacted many prospective customers. The most demanded is 2-strokes. Why. One sample. We easily reach 257 g/(hp⋅h) with MegaSquirt 2 ex...
by jbiplane
Sat Mar 14, 2020 6:47 pm
Forum: Hardware
Topic: EFI for small engines
Replies: 100
Views: 19557

Re: EFI for small engines

>Are there TB's with injector bungs No better be flexible in injector placement At moment external. In development with perfecting batteryless Power connector required FAI injectors are of interest Fai - dosing system permanently spray fuel by micro doses. Dont related to crank rpm. Work MUCH worse ...
by jbiplane
Sat Mar 14, 2020 10:08 am
Forum: Hardware
Topic: EFI for small engines
Replies: 100
Views: 19557

Re: EFI for small engines

Yes, you have very correct understanding. >I see desired sequence like this. >1. turn on engine run switch >2. fuel pump PWM's to some pressure and consumes ?? mJ. Yes, most spread motorcycle fuel pump use 43psi or 3bar pressure. This pressure is comfortable, but in future possible decrease it to sm...
by jbiplane
Fri Mar 13, 2020 1:33 am
Forum: Hardware
Topic: EFI for small engines
Replies: 100
Views: 19557

Re: EFI for small engines

Pull start? Electric start? Crank decoder plan? I need more details. Should work mostly for pull start, electric starter should be supported as well. Decoder. It would be fine if for some users worked with one dent + scooter inductive sensor(existing on most scooters) but it mostly will with geared...
by jbiplane
Thu Mar 12, 2020 4:53 pm
Forum: Hardware
Topic: EFI for small engines
Replies: 100
Views: 19557

Re: EFI for small engines

>How do you EFI with no battery? Exist few solutions, but at moment small battery is OK. In Megasquirt2..3 use few variants of PWM fuel pump regulation the simplest with fuel pressure sensor. At moment small pump eat 24watt. It too much for most scooters. If PWM reduce consumption to max 15w it woul...
by jbiplane
Thu Mar 12, 2020 12:36 am
Forum: Hardware
Topic: EFI for small engines
Replies: 100
Views: 19557

Re: EFI for small engines

Ural motorcycles used a similar idea for a few years that was made by Electro Jet: And Walbro seems to also be doing something similar: Both of this solution non-programable and require battery. You need to buy from those company 1000+ articles to get adopted for you engines. So I thiked someone ca...
by jbiplane
Wed Mar 11, 2020 1:41 pm
Forum: Hardware
Topic: EFI for small engines
Replies: 100
Views: 19557

Re: EFI for small engines

I used Megasquirt Ecotrons and few Speeduino on small engines and they behave worse than carburetors. I have clear vision how make happy this category. If someone help me I will full tests and mechanical part to bring this solution on market. If make good and cheap solutionit will really hit the mar...
by jbiplane
Tue Mar 10, 2020 6:10 pm
Forum: Hardware
Topic: EFI for small engines
Replies: 100
Views: 19557

Re: EFI for small engines

This solution from Stihl works perfectly for small 2-strokes. Without lambda, automatic calibration, bateryless, mechanical fuel pump of crankcase pressure variation. I would be happy produce throttle body if someone will make working board for.
by jbiplane
Fri Jan 03, 2020 2:58 am
Forum: Hardware
Topic: EFI for small engines
Replies: 100
Views: 19557

Re: EFI for small engines

hojnikb wrote:
Thu Jan 02, 2020 10:28 pm
is ecotrons even in any way related to aliexpress kit ?
Yes, they have on ali 2 vriants of kits. For most of cc it is ecotrons, for other simplified ECU taking in accout only 02 sensor.
by jbiplane
Wed Dec 25, 2019 8:18 am
Forum: Hardware
Topic: EFI for small engines
Replies: 100
Views: 19557

Re: EFI for small engines

What specifically was wrong with the units ? Pump faulires, injector issue, ecu... ? Problems are numerous, unpredictable and each time differs. One my friend burn 16 smartcoils with his Econtron. Sometimes ECU can hang up. Sometimes unprotected ECU outputs burn out. Sometimes loosing fuel output s...
by jbiplane
Mon Dec 23, 2019 1:46 pm
Forum: Hardware
Topic: EFI for small engines
Replies: 100
Views: 19557

Re: EFI for small engines

I'm seriously considering converting my gy6-50 to EFI as sort of a test bed for efi tinkering. These aliexpress kits seem to be the only ones ready made for this specific engine. I have ~5 kits from ecotrons abandoned in scrap. A bit more workable is https://aliexpress.ru/item/32767252274.html?spm=...
by jbiplane
Thu Dec 19, 2019 4:25 pm
Forum: Hardware
Topic: microRusEFI
Replies: 276
Views: 85692

Re: microRusEfi

Just curious, are you planning to implement "Returnless Fuel Systems" says by PWM fuel pump regulation or other variant? Says typical moto fuel pump with 35lph eat 26watt what is too much and prevent use fuel injection on old motos. Or may be exist simple third side schematics? Grateful in advance f...
by jbiplane
Mon Nov 25, 2019 5:51 pm
Forum: Hardware
Topic: EFI for small engines
Replies: 100
Views: 19557

Re: EFI for small engines

My engineer made at moment this ECU
Image
Image

One day he will try to place NonoRusEFI to the same case.
by jbiplane
Fri Sep 20, 2019 1:53 am
Forum: Hardware
Topic: EFI for small engines
Replies: 100
Views: 19557

Re: EFI for small engines

russian wrote:
Fri Sep 20, 2019 1:30 am
It looks like no one with KiCad skills is currently interested to spend time on nanoRusEfi.
Is there easy way to transfer microRusEFI to ALTIUM DESIGNER?
by jbiplane
Fri Sep 20, 2019 1:22 am
Forum: Hardware
Topic: EFI for small engines
Replies: 100
Views: 19557

Re: EFI for small engines

Is that a slightly different enclosure? Why do you not like the original MRE enclosure? I looking for smallest possible enclosure with 32 pins. The box I found is much easier got from Chinese suppliers. It is 35% shorter, 2 times lighter and considerably cheaper, below 10 USD including connectors. ...
by jbiplane
Thu Sep 19, 2019 5:23 pm
Forum: Hardware
Topic: EFI for small engines
Replies: 100
Views: 19557

Re: EFI for small engines

Could be a good case for nanoRusEfi is anyone would ever make one! I would be ready to make and test one fitted in this enclosure If I had Gerber and BOM 32pin box.jpg 32pin box1.jpg It is 32 pins. Could be 1. +12V 2. - 3. power ground 4. analog sensors ground 5. IAT 6. CLT 7. O2 8. TPS 9. 5V 10 11...
by jbiplane
Wed Sep 18, 2019 2:37 pm
Forum: Hardware
Topic: microRusEFI
Replies: 276
Views: 85692

Re: microRusEfi

russian wrote:
Tue Sep 17, 2019 10:00 pm
Please attach as .zip file
Attached. PCB connector and bottom part together. Corrected by factory drawings.
by jbiplane
Tue Sep 17, 2019 2:10 pm
Forum: Hardware
Topic: microRusEFI
Replies: 276
Views: 85692

Re: microRusEfi

The error isn't split centrally. I corrected PCB and case bottom part according chinese drawings. Fixing holes moved up to 0.45mm. Cannot drop STEP file here. Can correct upper part of case as well (according drawings). When I get real case I can scan and reconstruct it with precision of 0.02mm. Co...
by jbiplane
Sun Sep 15, 2019 5:12 pm
Forum: Hardware
Topic: microRusEFI
Replies: 276
Views: 85692

Re: microRusEfi

Encountered minor error in connector area of PCB.
The hole pitch = 2.5, not 2.54mm
PCB correction.jpg
PCB correction.jpg (86.95 KiB) Viewed 11496 times
PCB correction 1.jpg
PCB correction 1.jpg (63.5 KiB) Viewed 11496 times