Device for detecting misfire of internal combustion engine
US5440921A · kind A · utility
13Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1992 |
| Grant date | Aug 15, 1995 |
| Priority date | — |
| Expiry date | Oct 14, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M15/11
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a device for judging of misfire of an internal combustion engine from a variation of crankshaft rotational speed during combustion stroke of each cylinders, a measurement period for measurement of crankshaft rotational speed at a cylinder is set by counting a predetermined number of first signals indicative of a predetermined rotational angle of a crankshaft firstly on the basis of a second signal indicative of a reference position of a camshaft and secondly and onward on the basis of the first signals used for setting the previous measurement section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.