Apparatus for monitoring the cylinders of a multi-cylinder internal combustion engine
US5823166A · kind A · utility
18Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 3, 1997 |
| Grant date | Oct 20, 1998 |
| Priority date | — |
| Expiry date | Feb 3, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/009
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An apparatus for cylinder recognition in an internal combustion engine is described, in which the individual-cylinder rpm fluctuations or variables dependent on them are first stored in memory and then, when the engine is restarted, compared with the rpm fluctuations that result at that time. From the results of the comparison obtained, a cylinder recognition can be performed. Particularly in conjunction with engines in which engine roughness detection is performed, the cylinder recognition can be done on the basis of adaptation values for the engine roughness detection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.