Knocking detection device in diesel engine
US4567751A · kind A · utility
8Cited by
3References
5Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Oct 5, 1983 |
| Grant date | Feb 4, 1986 |
| Priority date | — |
| Expiry date | Oct 5, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A device for detection of knocking in a diesel engine has a pressure sensor including a piezoelectric element and detecting a rate of change in combustion pressure, an angle sensor for detecting the rotation of the engine or engine speed, and a knocking detector for receiving outputs from the pressure and angle sensors. The knocking detector serves to detect a rate of change in combustion pressure per unit angle upon necessary correction by the engine speed and to compare the obtained rate with a reference rate of 5 atm/deg, at which knocking occurs. Knocking is detected when the detected rate exceeds the reference rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.