Misfire-detecting system for internal combustion engines
US5215067A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1992 |
| Grant date | Jun 1, 1993 |
| Priority date | — |
| Expiry date | Mar 5, 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 after generation of an ignition command signal indicative of ignition timing is detected and compared with a predetermined voltage value, and it is determines based upon the results of the comparison whether or not a misfire has occurred in the engine. The determination as to occurrence of the misfire is based upon at least one of a time period over which the detected value of the sparking voltage exceeds the predetermined voltage value, and an area of a portion of detected values of the sparking voltage exceeding the predetermined voltage value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.