Ignition timing control system for internal combustion engines
US4539957A · kind A · utility
12Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1982 |
| Grant date | Sep 10, 1985 |
| Priority date | — |
| Expiry date | Sep 3, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a system for retarding an ignition timing of the engine depending on a signal from a knock detector, the knocking intensity and the knocking frequency are discriminated in accordance with the signal of the knock detector. On the basis of the discriminated results, the system provides a small amount of retard angle for ignition timing per one knocking when the knocking frequency is low, that is, the interval between knocking signals is long and the intensity of knocking is light. On the contrary, the system provides a large amount of retard angle when the interval is short and the intensity is heavy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.