Ignition range detector for internal combustion engine
US4403505A · kind A · utility
14Cited by
2References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 2, 1981 |
| Grant date | Sep 13, 1983 |
| Priority date | — |
| Expiry date | Nov 2, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The pressure in the cylinder Pi(-.THETA.A) at the fixed angle -.THETA.A preceding to maximum ignition advance at the time of each combustion is determined from the output signal of a pressure detector for detecting the pressure in the cylinder of the internal combustion engine. The pressure in the cylinder Pi(+.THETA.B) at a predetermined angle +.THETA.B during the expansion process is also determined. It is decided whether the ratio Pi(+.THETA.B)/Pi(-.THETA.A) is larger or smaller than a predetermined value .beta. thereby to detect an ignition range always regardless of the running conditions of the internal combustion engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.