COP Ignition Development
I hooked up the engine simulator to the test ECU board, made connections to logic analyzer, and two USB ports to monitor ECU and control simulator. To my surprise it is working !!! Here is a snapshot of my development screen on my notebook.
The back-ground is the logic analyzer screen. It shows at the bottom the CAM CID signal, and above that the timing reference signal TAB, from the shutter wheel, the six signals above are ignition transistor drive signals for coils 1-6. The coil signals on left are for RPM below 1500 showing two ignition strikes, the single ones are for RPM slightly above 1500 RPM. The pulse widths are about 1.6 ms, for first. The small framed screen on the left is the ECU user interface, on the right the engine sensor control screen. I have much more testing to do, but happy with the progress. With the logic analyzer, cursors are used to measure things like timing advance and RPM. It captures every event, and the files can be imported to excel. The software is available free, Downloads . If there is interest, I will post a file, and post how to make timing measurements with calculations. I discovered there is a new version of the software at the link above. It works, but old version was better for visibility. Below is the file that can be opened with software above, it is a test run from 650 RPM to 5100 RPM,over rev happens at 4100 RPM.
I hooked up the engine simulator to the test ECU board, made connections to logic analyzer, and two USB ports to monitor ECU and control simulator. To my surprise it is working !!! Here is a snapshot of my development screen on my notebook.
The back-ground is the logic analyzer screen. It shows at the bottom the CAM CID signal, and above that the timing reference signal TAB, from the shutter wheel, the six signals above are ignition transistor drive signals for coils 1-6. The coil signals on left are for RPM below 1500 showing two ignition strikes, the single ones are for RPM slightly above 1500 RPM. The pulse widths are about 1.6 ms, for first. The small framed screen on the left is the ECU user interface, on the right the engine sensor control screen. I have much more testing to do, but happy with the progress. With the logic analyzer, cursors are used to measure things like timing advance and RPM. It captures every event, and the files can be imported to excel. The software is available free, Downloads . If there is interest, I will post a file, and post how to make timing measurements with calculations. I discovered there is a new version of the software at the link above. It works, but old version was better for visibility. Below is the file that can be opened with software above, it is a test run from 650 RPM to 5100 RPM,over rev happens at 4100 RPM.
