http://nefariousmotorsports.com/forum/index.php?topic=15018.0title= is making some cool documentation available so we can compare with what we came up with:
FB ESUK 9.70 Description of functions
The transition compensation determines the required increase or decrease in injection quantity for a load change to allow for compensation of wall film effects.
The transition compensation consists of 2 parts:
- long-term share rkukl_w
serves to compensate for slow wall film effects. Derived from the predetermined load signal rlp_w and the rpm
Calculation is carried out synchronously with the segment. (segmentsynchron- no idea what segment refers to)
- Short-term portion rkukk_w
serves to compensate for quick wall film effects. Derived from the predicted load signal rlp_w and the rpm.
Calculation is carried out synchronously with the segment.
The wall film characteristic value WFRL contains the amount of fuel that is stored in the wall film at the respective load. If the load changes during a segment by the value drlp_w = rlp_w (s) - rlp_w (s-1), the wall film difference dwf_w = WFRL (rlp_w (s)) - WFRL (rlp_w (s-1)) must be injected as an additional amount of fuel in order to build up the wall film.
This additional amount must be distributed over time in such a way that lambda remains constant during the transition. For this purpose, the excess amount, using the distribution factor aukk is split into a short-term and a long-term portion and added to the corresponding short-term (sdwfk_w) and long-term (sdwfl_w) storage (assuming storage ECU memory parameter and not to actual fuel on walls)
In each segment the fuel amount sdwfl_w * ZBALM (when accelerating) or sdwfl_w * ZVALM (when decelerating) are decucted from long-term storage and is added to the long-term component rkukl_w of the total value rkukkl_w of the UK. In the following iteration the long-term memory will be reduced by the same amount rkukl_w, provided rkukl_w has been used with at least one ti-initialization or ti was switched off (B_redkl = 1).
The derating factor ZBALM or ZVALM is dependent on the engine temperature, since the evaporation of the wall film is less significant when the engine is cold.