Misfire detection by luts-method

The corrected engine roughness lutsk  is compared to a load and speed dependant threshold lurs  . If the threshold is exceeded, misfire is detected. An example of continuous misfire in cylinder one is shown in Fig 2.

Fig 1: Luts-Method - %DMDLU

Courtesy of BMW OF NORTH AMERICA, INC.

Fig 2: Illustration Of Continuous Misfire

Courtesy of BMW OF NORTH AMERICA, INC.