When I was testing with EMU Pro8, there would be a fire break at more than 10000 RPM. May I ask what is the maximum speed allowed for this ECU? How to set it?
I run 11000 on v8 cosworth dfr no issues
EMU PRO is tested to 20k rpm.
There is probably another reason, but it is impossible to tell without data.
I responded to your other topic, and you had trigger errors in that log.
Thank you for your answer. I solved the problem in that topic after adjusting the trigger gap, but I tried 10000rpm, and there was still a fire phenomenon. It works normally at 9900rpm, I wonder if it is because my parameters are wrong. Could you please take a look at it?
Uploading: 2025_0311_1513.emuprolog…
Uploading: TEST.emupro…
There is something wrong with the links.
I can’t download the files.
Is it because I use the new version that I can’t open it? Could you please take a look at the following data? The air-fuel ratio will rise/fluctuate after the engine runs for a period of time, which can only be solved by stopping and restarting, and the same problem will occur again for a few minutes.
2025_0330_2012.emuprolog (669.5 KB)
Be on fire.emupro (27.4 KB)
You have misfires at the end of the log.
Trigger looks good at that point.
I think the spark plugs get fouled.
You are running very rich, and the injector’s pulse width is very chaotic.
There are jumps of pulse width from 8.8 ms to 9.8 ms.
That is 13% of fuel change at steady state conditions.
That should not be happening.
Two variables contribute to this.
Manifold pressure and volumetric efficiency.
Since this is a two-cylinder engine, the pulses in the intake are clearly visible. In that situation, I recommend using synchronous MAP sampling. It will sample the manifold pressure at a constant crankshaft angle, which will give a smooth pressure signal.
The volumetric efficiency table needs to be smoothed out. It has many sudden shifts in value, which are not realistic and are creating jumps in fuel amount. You can select a part or the whole table and use the “equalize” function to make it smooth.
You aim to have a minimum pulse width variation at steady state conditions.