Fuel supply misfire-detecting system for internal combustion engines
US5349299A · kind A · utility
12Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 11, 1992 |
| Grant date | Sep 20, 1994 |
| Priority date | — |
| Expiry date | Dec 11, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02P2017/125
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A misfire-detecting system detects a misfire occurring in an internal combustion engine. A value of sparking voltage for discharging a spark plug of the engine is detected. A differentiating circuit differentiates the detected value of the sparking voltage. A misfire-determining circuit compares the differential value of the sparking voltage with a predetermined value, and determines, based upon a result of the comparison, whether a misfire has occurred in the engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.