Internal combustion engine misfire detection system
Patent
·
OSTI ID:6465725
An internal combustion engine misfire detection system is described which counts the transitions in the output of an oxygen sensor in a closed loop air/fuel ratio controller over a predetermined time period and compares the transition count with a limit count determined to be the number which would occur at the engine speed during a misfire condition. When the number of transitions exceeds the limit count, a warning lamp is energized and secondary air to an oxidizing converter is diverted to the atmosphere.
- Assignee:
- General Motors Corp.
- Patent Number(s):
- US 4445326
- OSTI ID:
- 6465725
- Country of Publication:
- United States
- Language:
- English
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