[wnesensohn]

These look like diagrams from Bosch Otto ECUs (ME series).

FWIW, the ECUs in question (EDC17) use much more descriptive names:

Epm_nEng - engine speed; InjCt1_qSetUnBal - set quantity for first injection (roughly); VehV_v - vehicle speed

I much prefer the EDC17 style, but your mileage may vary.

[bri3d]

Oh, you're right! I've never owned a diesel so I've only looked at EDC17 in passing. :)

The variables certainly aren't as cryptic... I think even a native German speaker would have trouble with the ME7 ones.