Calculated load and fuel trim determination
The calculated engine load "LOAD_CLC [%]" is based on the calculated mass air flow Speed Density-System - The Air Mass Flow for a suction stroke is a function of the intake system manifold pressure and the air temperature
Strategy:
A 2-dimensional map is used to interpolate the calculated engine load "LOAD_CLC [%]" depending on calculated mass air flow and engine speed. A weighting factor is applied to compensate the altitude influence.
The calculation is performed as follows:
LOAD_CLC [%] = LOAD_CLC_RAW
f (calculated mass air flow, engine speed) x (101.3 kPa / ambient pressure) x 100%
with:
CALCULATION ENGINE LOAD REFERENCE
| LOAD_CLC | calculated engine load in % with altitude correction |
| LOAD_CLC_RAW | calculated engine load in % without altitude correction |