Misfire detection in internal combustion engines
US5345817A · kind A · utility
102Cited by
13References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1993 |
| Grant date | Sep 13, 1994 |
| Priority date | — |
| Expiry date | Feb 22, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M15/11
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Engine combustion malfunctions are detected and the responsible cylinder identified by an approach appropriate to the engine operating point by monitoring change in engine speed in a manner insensitive to engine output shaft tooth-to-tooth spacing variations, substantially linear changes in engine speed, and driveline ringing, such as from rough roads or a previously detected misfire. Multiple misfires may be detected in a single engine cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.