Misfire detection method and apparatus
US5841025A · kind A · utility
23Cited by
17References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1995 |
| Grant date | Nov 24, 1998 |
| Priority date | — |
| Expiry date | Mar 31, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M15/11
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A misfire detection method and apparatus includes measurement of combustion induced torque in an internal combustion engine and provision of time-ordered first, second, and third acceleration data samples dependent on the torque. A misfire is indicated when a magnitude of the second acceleration data sample has a magnitude less than a misfire threshold, and less than a magnitude of both the first and third acceleration data samples.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.