Search found 56 matches

by jbiplane
Tue Dec 15, 2020 5:43 pm
Forum: Dev: Hardware
Topic: microRusEFI
Replies: 388
Views: 515227

Re: microRusEFI

ETB moving from 0 to 100% in under 0.1 second is pretty realistic. At this point to be honest please just get yourself an MRE https://www.ebay.com/itm/rusEFI-microRusEfi-assembled-ECU-standalone-engine-management/333532119947 - in order to preserve resources of the community I am considering shield...
by jbiplane
Tue Dec 15, 2020 4:54 pm
Forum: Dev: Hardware
Topic: microRusEFI
Replies: 388
Views: 515227

Re: microRusEFI

Anyone have practical experience with MRE and electronic throttle body driven by wire? My prefered scenario looks realistic? Says I want to have very fast TB with time of open or close below 0.1s by direct shaft bldc motor Then instead of accelerometer pedal it would bel used correct signal of autop...
by jbiplane
Sat Nov 28, 2020 2:57 pm
Forum: Dev: Hardware
Topic: EFI for small engines
Replies: 118
Views: 104464

Re: EFI for small engines

Gepro wrote:
Sat Nov 28, 2020 2:31 pm
What is the ultra low cost of the BlitzboxBL49sp ?! I
I quoted in China 10 pcba and got offer 64usd per unit without connector.
I can find company and quote. Seems if rip out wide band lambda price will be about 40 usd.
by jbiplane
Sat Nov 28, 2020 2:05 pm
Forum: Dev: Hardware
Topic: EFI for small engines
Replies: 118
Views: 104464

Re: EFI for small engines

Why do you want so much CDI ignition coils ? No, I dont like it too much but want to have an option to work with. It benefitiar for very small engines. In some application I have to count each gramm. CDI coil of Honda GY6 50...250cc weight just 37 grammes. At moment I mostly use Nissan Denso smart ...
by jbiplane
Sat Nov 28, 2020 1:55 pm
Forum: Dev: Hardware
Topic: EFI for small engines
Replies: 118
Views: 104464

Re: EFI for small engines

Why do you want so much CDI ignition coils ? No, I dont like it too much but want to have an option to work with. It benefitiar for very small engines. In some application I have to count each gramm. CDI coil of Honda GY6 50...250cc weight just 37 grammes. At moment I mostly use Nissan Denso smart ...
by jbiplane
Sat Nov 28, 2020 12:19 pm
Forum: Dev: Hardware
Topic: EFI for small engines
Replies: 118
Views: 104464

Re: EFI for small engines

(design only, no testing or assembly!), and at current consulting rates for an embedded hardware engineer, that's north of $1000 US. 1. Lets imagine I invest this 1000, make first pcb locally and its fault. How many iteration it can take to make it really working. What is real developing budget for...
by jbiplane
Sat Nov 28, 2020 10:55 am
Forum: Dev: Hardware
Topic: EFI for small engines
Replies: 118
Views: 104464

Re: EFI for small engines

I don't think you'd like the hourly rate for one of us to do that. Exept for PCB itself I have to create remaining hardware kit. At moment I will implement on Speeduino by my engineer. One PCB would cost me 48USD baced on 20unit odrers including delivery tending to be less for bigger batches. I am ...
by jbiplane
Sat Nov 28, 2020 9:34 am
Forum: Dev: Hardware
Topic: EFI for small engines
Replies: 118
Views: 104464

Re: EFI for small engines

Perhaps you are thinking drone so weight is a concern? Is your concern LxWxH or weight No, I have solution for drones, use Russian clone of К1986ВЕ92У. But market for EFI drones is about 0. My oblective is old small carburator engines. And make bolt on kit with minimal modification of engine. I loo...
by jbiplane
Fri Nov 27, 2020 5:47 pm
Forum: Dev: Hardware
Topic: EFI for small engines
Replies: 118
Views: 104464

Re: EFI for small engines

Could someone roughly estimate dimensions for simplest nanoRusEFI board to be integrated to throttle body The board should be reduced MRI to: 2 injectors 2 active ignition coils or 1 passive ignition coil with separate ground plane Primary VR or Hall input (configurable with few resistor changes) Se...
by jbiplane
Fri Oct 16, 2020 3:38 am
Forum: Dev: Hardware
Topic: EFI for small engines
Replies: 118
Views: 104464

Re: EFI for small engines

Have you fabricated this yet? Have you started Speeduino on it yet? Me not. But original creator testing boards at moment and all info available at https://github.com/oelprinz-org/BlitzboxBL49sp . https://speeduino.com/forum/download/file.php?id=7415 I asked for Quote chinese companies. They give t...
by jbiplane
Thu Oct 15, 2020 4:12 pm
Forum: Dev: Hardware
Topic: EFI for small engines
Replies: 118
Views: 104464

Re: EFI for small engines

Speeduino news 2 injection+ 2ignition channels 47x25mm board https://speeduino.com/forum/download/file.php?id=7447 A bit bigger board low-cost and mini-sized ECU for speeduino firmware ( 45 x 55 mm ) 4 high impedance injectors 4 active ignition coils or 1 passive ignition coil with separate ground p...
by jbiplane
Sun Mar 22, 2020 11:01 am
Forum: Dev: Hardware
Topic: EFI for small engines
Replies: 118
Views: 104464

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: Dev: Hardware
Topic: EFI for small engines
Replies: 118
Views: 104464

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: Dev: Hardware
Topic: EFI for small engines
Replies: 118
Views: 104464

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: Dev: Hardware
Topic: EFI for small engines
Replies: 118
Views: 104464

Re: EFI for small engines

Better start with ECU itself. Test platform is secondary...
by jbiplane
Fri Mar 20, 2020 1:38 am
Forum: Dev: Hardware
Topic: EFI for small engines
Replies: 118
Views: 104464

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: Dev: Hardware
Topic: EFI for small engines
Replies: 118
Views: 104464

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: Dev: Hardware
Topic: EFI for small engines
Replies: 118
Views: 104464

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=9d05ca86-876...
by jbiplane
Wed Mar 18, 2020 6:04 am
Forum: Dev: Hardware
Topic: EFI for small engines
Replies: 118
Views: 104464

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: Dev: Hardware
Topic: EFI for small engines
Replies: 118
Views: 104464

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: Dev: Hardware
Topic: EFI for small engines
Replies: 118
Views: 104464

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: Dev: Hardware
Topic: EFI for small engines
Replies: 118
Views: 104464

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: Dev: Hardware
Topic: EFI for small engines
Replies: 118
Views: 104464

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: Dev: Hardware
Topic: EFI for small engines
Replies: 118
Views: 104464

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: Dev: Hardware
Topic: EFI for small engines
Replies: 118
Views: 104464

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: Dev: Hardware
Topic: EFI for small engines
Replies: 118
Views: 104464

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: Dev: Hardware
Topic: EFI for small engines
Replies: 118
Views: 104464

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: Dev: Hardware
Topic: EFI for small engines
Replies: 118
Views: 104464

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: Dev: Hardware
Topic: EFI for small engines
Replies: 118
Views: 104464

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: Dev: Hardware
Topic: EFI for small engines
Replies: 118
Views: 104464

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.