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Industrial engine electronic management system development - HBA style

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Vigilant1

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The process continues. Now board become more industrial ang got waterproof case and connector.
You keep moving ahead. What is the present architecture (open loop, closed loop with lambda sensor?) and fault-tolerance modes (esp failures of sensors)? I noticed you've tested on various temperatures, have you had a chance to check shielding in an electronic noise environment? Thanks for the update.
 

jbiplane

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320 grammes

You keep moving ahead. What is the present architecture (open loop, closed loop with lambda sensor?) and fault-tolerance modes (esp failures of sensors)? I noticed you've tested on various temperatures, have you had a chance to check shielding in an electronic noise environment? Thanks for the update.
The compact 69x65mm board at functionality close to Megasquirt Extra with some add ons and supports open loop and closed loop modes. I tested it in noise environment where Speeduino hang on without any issues. At moment I dont planned to sell this ECU and going to use with my engines. I'll collects logs and analyze before bring on market "ECU bolt on
kit".

For sensors badly need cranckshaft sensor and TPS. All other sensors provide just corrections.
If something fault, than engine should continue work but less effeciently.
 
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dtnelson

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You keep moving ahead. What is the present architecture (open loop, closed loop with lambda sensor?) and fault-tolerance modes (esp failures of sensors)? I noticed you've tested on various temperatures, have you had a chance to check shielding in an electronic noise environment? Thanks for the update.
YES! This is a fascinating topic to me (as a retired EE). In particular, if you're considering a closed loop system with O2 sensors, are you going to attempt a knock sensor of some type? To me, that's where the toughest problems lie...

Thanks!

Dave
 

Vigilant1

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Almost ready ECU. Missed on-board MAP sensor (delivery delay)
Very nice. When you are ready, please post the documentation that you'll ship with the units/engines. It will be interesting to see the user defaults available in case of degraded operation (failed sensors, etc).
 

AIRCAB

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Picked up on this thread late, and apologize for the next question. There are many after market EFI systems available on the market, so for instance the MicroSquirt at $300 with harness, the user interface together with data logging, and the large user group available at a keystroke, there must be some features in this proposed system that are not available in the MicroSquirt.
 

jbiplane

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knock sensor
We have this option.

MicroSquirt at $300 with harness, the user interface together with data logging
I used before Ecotron, Mictosquirt, Speeduino and some other. They are good in software part but very dissapoint in hardware quality (everything around processor). I was need something more reliable, working immediatelly without spending time on their support forumes learning somebodies bugs and problems.

We have at least all the features of more expensive MegaSquirt 2 Extra in few times smaller waterproof case and connector + stepper idle control for 1/2 price of MicroSquirt.
Please compare with Megasquirt 2 Extra board below...

With our ECU it is possible use the tonns of existing software for tuning and data logging.
User can connect to our ECU wireless by Bluetooth or Wi Fi

For me as engine manufacturer important to be independent of ECU buying and import + software issues. I completely flexible to change any input output to fit my changing objectives :)
 
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dtnelson

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Regarding knock sensors, jbiplane says, "we have that option".

Could you expand? From what I've seen and read, this is a (the?) key problem with closing the loop...

Thanks!

Dave
 

AIRCAB

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Jbiplane, thanks for the response. My experience indicates that most builders who will consider you ECU will have no hardware expierence, so the user interface will need to be good. Seeing you system is being designed for small twins, looking at Suzuki battery-less fuel injection may lend some ideas. Good luck with your project.

Steve
 

jbiplane

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Regarding knock sensors, jbiplane says, "we have that option".
Could you expand? Dave
We have add on knock sensing board, but it cost more than ECU itself, so we designed couple of more advanced boards than shown here. But according my experience on 2-strokes with rather small power density one dont need knock sensing at all.

Seeing you system is being designed for small twins, looking at Suzuki battery-less fuel injection may lend some ideas
Steve
Thanks Steve
The main objective is to install this ECU on my engines, possible make "bolt on kits" for other engines. I will give to user possibility to auto calibration and logging only. Battery less system is easy possible with other types of fuel pumps.
 
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jbiplane

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Choosing existing motorcycle throttle bodies with TPS for small engines below 750cc. For bigger easy use automotive throttles. Possible variants below.


 

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