Method and apparatus for misfire detection using engine...

Details Method and apparatus for misfire detection using engine... Method and apparatus for misfire detection using engine...

2009-02-13

2011-10-25

Moulis, Thomas (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C701S106000, C701S115000, C702S185000

Reexamination Certificate

active

08046155

ABSTRACT:
In a method of monitoring for a misfire event in an internal combustion engine signals representative of engine speed are monitored for successive engine revolutions subsequent to each firing event. The monitored signals are stored (e.g., in a buffer) and processed to detect changes in the monitored speed signals. Changes in monitored speed signals that are indicative of an actual misfire event are detected and a misfire count is changed in response thereto.

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