Abnormal combustion detection apparatus and method for internal combustion engine
US6105552A · kind A · utility
34Cited by
2References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 23, 1999 |
| Grant date | Aug 22, 2000 |
| Priority date | — |
| Expiry date | Feb 23, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An abnormal combustion detection apparatus for an internal combustion engine quickly detects the occurrence of preignition by using a knock sensor. When the knock sensor detects an engine knocking, the ignition timing is delayed. If despite the delay of ignition timing, the knocking is not decreased and the air-fuel ratio detected after the delay of ignition timing is less than the air-fuel ratio detected before the delay of ignition timing, it is determined that preignition has occurred.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.