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Electronic Fuel Injection (EFI) for RC engines.

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Electronic Fuel Injection (EFI) for RC engines.

Old 02-19-2018, 06:20 AM
  #1  
loweheiser
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Default Electronic Fuel Injection (EFI) for RC engines.

Hello,

I am working on an injection system for small engines, mainly two stroke engines.

Originally it was thinked for UAV. In my experience it is almost essential for unmanned because customers have no experience with carburation and many times there is no chance to make a test flight and it is absolutely mandatory if you need to reach high altitude from takeoff.

At first EFI does not provide a clear benefit for RC engines, carburetors works great and are cheap. you don´t need fuel efficency, you don´t need reach high altitude...

Even so I published in another forums and it seems there are people interested, it is possible that it have some advantages:

- maybe an increase in power because you can use a bigger throttle body.
- no needles adjustment
- don't have choke
- no throttle link
...

Advantages or not advantages EFI seems the future, all 2 stroke dirtbikes come with EFI this year, Stihl is making its fuel injected chainsaw...

I would like to know what you think.
In other forums people tell me that the best candidate is the DA120, What engines are you interested?
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Old 11-23-2019, 07:18 PM
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zpeke
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Have you gone forward with this project?? I`m interested, would like to know more and if its available for purchase!!
Old 02-01-2020, 08:54 AM
  #3  
loweheiser
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Yes, it is working!!!
We have tested a lot of hours, and it is really good solution
I update with some pictures of current system

well, I am unable to post pictures or link until i have 10 posts, so I am updating my website with new pictures, my website is same as my nick + .com




Old 02-08-2020, 10:14 PM
  #4  
Evgeny-arm
 
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Originally Posted by loweheiser View Post
- no needles adjustment
- don't have choke
- no throttle link
...
All of course what you listed is interesting.
But you forgot another moment that we get by switching to the EFI system.
Since we can start spraying fuel before the opening of RED Valve, piston skirts and other options.
We will increase engine torque where the carburetor cannot compensate us for this.
------------------------------------------------------
Everything is certainly wonderful.
But here is the problem ->
As we say in Russia - you are a long time to harness their horses.
There are already alternative solutions while you think how and what and when.

The system costing just $ 40
For many, the problem is not an iron solution, but a ready-made controller that can be implemented.
And this solution is already there.
And you didn’t even give us links to your page, only an announcement of your desires.
Old 02-08-2020, 10:35 PM
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Evgeny-arm
 
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The weight of the controller and one of the applications is ignition only, EFI is manufacturing the throttle body.
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Can you still make a happy and give us your version?
Old 02-29-2020, 09:58 AM
  #6  
raydar
 
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What do you use for a fuel pump, a controlled fuel pressure of about a bar would prob be required for good fuel atomization with a injector, that looks like the major hurdle to me yet is not mentioned at all?.
Old 03-28-2020, 07:00 AM
  #7  
loweheiser
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I have seen UAV EFI working at 1 bar, but it is out of specifications and as you said atomization will be poor, i use 2.5bar

I am working on a DLE130 engine with a 25mm throttle body
well i am trying to attach some images but it is not possible , it seems I can not post URLs until i had 10 posts, but attachments are also URLs?



Last edited by loweheiser; 03-28-2020 at 07:04 AM.
Old 04-13-2020, 11:03 PM
  #8  
loweheiser
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wow, I can finally post my photos! you can see pictures of thrttle body and electonic control module here - Loweheiser UAV/RPAS Electronic Fuel Injection

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