Quote:
Originally Posted by Magister
I tried a lot of things to have a more accurate value, using wideband O2 sensor value, lambda value, etc.
After thousands of logs, I saw that the correction using this PIDs was not really worth it. About all the corrections were between 0.97 and 1.03, so adding time to ask for these PID (some car do not have wideband O2 sensor anyway) was a little bit useless. Especially that at the end, the average was about right.
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This pid is apparently quite different for diesel. I originally overlooked it, but from:
About PID Calculated Load Value that eimix referenced previously:
Quote:
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Compression ignition engines (diesels) shall support this PID using fuel flow in place of airflow for the above calculations.
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So it appears to be the right avenue for my application. I will report back after I've been able to test. Unfortunately I'm struggling with some issues related to ecu polling / reinit which have hindered my progress towards my intended goal. It's been a while since I've dabbled in avr_gcc, and this latest revisit has rewarded me with several new gray hairs.
What I've probably failed to mention about my ordeal with diesel application is that for whatever reason when I tested a default build no consumption was accumulated using the MAF configuration and the gasoline constants for stoich. I believe this is because the MAF for diesel is either not supported or returns erroneous values. Whatever the case, I've found numerous other references stating that CLV is the correct method for diesel. I don't want to open up a can of copyright worms by posting links, but simple google searches will get you there.