1.3.8 Misfire detection by fluts-method (%DMDLUA)

Fig 1: Fluts-Method Communication Diagram

Courtesy of BMW OF NORTH AMERICA, INC.

The function allows the detection of continuous misfire at one or more cylinders. The filtered, cylinder-individual engine roughness values flutsk(cyl) are compared to an accompanying threshold luar. The threshold value is calculated from a load and engine speed dependent offset value, which is added to the lowest flutsk value per working cycle.