Speeduino: Open-Source Engine Management
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Speeduino: Open-Source Engine Management
1–10 of 58 posts
Re: Speeduino: Open-Source Engine Management
#2While I love that this is possible you have to be very literate in electronics for this to make sense. A lot of car guys just aren't going to rip apart their wiring harnesses and do testing to make sure it'll work with their onboard sensors. That being said I'm currently looking into this for a turbo econobox. Haven't decided whether to go this route or a standalone but I still have plenty of time to source parts.
Re: Speeduino: Open-Source Engine Management
#3> Ever wondered why black box, aftermarket engine management systems can cost thousands of dollars?
There’s actually a pretty good reason. I can’t imagine starting a new engine management project in 2020 without using an FPGA to interface with engine positioning sensors and outputs. Modern engines tend to be way too complicated to coordinate without paying close attention to your modeling of where all the fast moving mechanical bits are currently.
It’s cool they released this as open-source but the tech would have been novel circa 1992.
Re: Speeduino: Open-Source Engine Management
#4> Ever wondered why black box, aftermarket engine management systems can cost thousands of dollars? There’s actually a pretty good reason. I can’t imagine starting a new engine management project in 2020 without using an FPGA to interface with engine positioning sensors and outputs. Modern engines tend to be way too complicated to coordinate without paying close attention to your modeling of where all the fast moving…
Well, My 1999 motorcycle (Kawasaki Concours ZG1000) is still carbureted.. If there is an affordable product to improve fuel efficiency and reduce emissions without giving up my privacy to corporate black boxes I would totally be interested.
Re: Speeduino: Open-Source Engine Management
#5This is neat, I've been daydreaming about this being possible to make for years now. Practical? Probably not, hard to beat a multi million dollar budget, but still, neat.
Re: Speeduino: Open-Source Engine Management
#6> Ever wondered why black box, aftermarket engine management systems can cost thousands of dollars? There’s actually a pretty good reason. I can’t imagine starting a new engine management project in 2020 without using an FPGA to interface with engine positioning sensors and outputs. Modern engines tend to be way too complicated to coordinate without paying close attention to your modeling of where all the fast moving…
I'm not aware of any aftermarket EMS's using FPGAs, and there are quite a lot of them. The engine position sensing isn't something that requires a lot of specialized hardware: The sensors are usually one or two reluctors or hall effect sensors that give, say, 12 to 64 clock edges per engine rotation. Determining engine position is pretty easy with most microcontroller's built-in timers. I know that megasquirt, and freeems use hardware timer capture inputs for this purpose.
It is certainly something that is easy to cause engine damage if you get it wrong, but the application for these is usually offroad vehicles. There is a community of people that do convert their engines to use these systems. I've eyed rusefi for a while, I've personally used freeems, and even started to write my own EMS for fun (https://github.com/via/viaems/).
I don't think engine position sensing has changed even with the most modern engines, though the direct injection engines certainly have more specific timing requirements for fuel injection.
Re: Speeduino: Open-Source Engine Management
#7I believe the Mega Squirt is also Open source and has been around since the early 2000's
Re: Speeduino: Open-Source Engine Management
#8I believe the Mega Squirt is also Open source and has been around since the early 2000's
It may still be open source, but it is not free software anymore, at least for MS3 software and hardware.
Re: Speeduino: Open-Source Engine Management
#9> Ever wondered why black box, aftermarket engine management systems can cost thousands of dollars? There’s actually a pretty good reason. I can’t imagine starting a new engine management project in 2020 without using an FPGA to interface with engine positioning sensors and outputs. Modern engines tend to be way too complicated to coordinate without paying close attention to your modeling of where all the fast moving…
I'm not aware of any aftermarket EMS's using FPGAs, and there are quite a lot of them. The engine position sensing isn't something that requires a lot of specialized hardware: The sensors are usually one or two reluctors or hall effect sensors that give, say, 12 to 64 clock edges per engine rotation. Determining engine position is pretty easy with most microcontroller's built-in timers. I know that megasquirt, and fr…
I'm fairly confident that Motecs line of ECU products all have FPGA's internally. I vaguely remember taking apart an old M400 and it having an FPGA. Thankfully their ECU manager software abstracts that all away from you.
Re: Speeduino: Open-Source Engine Management
#10Earlier quoted context omitted.
I'm not aware of any aftermarket EMS's using FPGAs, and there are quite a lot of them. The engine position sensing isn't something that requires a lot of specialized hardware: The sensors are usually one or two reluctors or hall effect sensors that give, say, 12 to 64 clock edges per engine rotation. Determining engine position is pretty easy with most microcontroller's built-in timers. I know that megasquirt, and fr…
I'm fairly confident that Motecs line of ECU products all have FPGA's internally. I vaguely remember taking apart an old M400 and it having an FPGA. Thankfully their ECU manager software abstracts that all away from you.
Fair enough. Having an FPGA can certainly make various aspects easier (especially for supporting higher precision outputs), but shouldn't be necessary for basic engine running.
As I understand it, most of the difficulty in modern engines is the tuning anyway. No longer is it just a VE and lambda table, there are so many dimensions that need to be taken into account for a stock car (variable valve timing or lift, electronic throttle control, etc), to get excellent emissions.