Misfire detection apparatus for internal combustion engine

Details Misfire detection apparatus for internal combustion engine Misfire detection apparatus for internal combustion engine

2006-04-19

2009-10-27

Solis, Erick (Department: 3747)

Measuring and testing

Internal combustion engine or related engine system or...

Irregular combustion

C073S114120, C073S114040, C123S406140, C123S406270, C123S436000

Reexamination Certificate

active

07607345

ABSTRACT:
In an internal combustion engine including a flywheel damper, an operation range in which misfire detection is affected by the flywheel damper is set in advance. Whether or not an operation state of the internal combustion engine is within an operation range affected by the flywheel damper is determined. When the operation state is within the operation range affected by the flywheel damper, for example a cylinder specifying process specifying a misfiring cylinder is stopped. By such processing, erroneous detection attributed to irregular rotation fluctuation behavior caused by the flywheel damper can be avoided, and misfire detection performance can be improved.

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