Ignition timing control system for internal combustion engines
US4426975A · kind A · utility
8Cited by
3References
4Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Nov 18, 1981 |
| Grant date | Jan 24, 1984 |
| Priority date | — |
| Expiry date | Nov 18, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In response to the occurrence of knocking in an internal combustion engine, the basic ignition timing is corrected in a direction to retard it through the charging and discharging of an integrator circuit. The integrated current output of the integrator circuit is varied in accordance with a voltage corresponding to the speed of the engine so as to limit the maximum amount of ignition timing retard at low speeds or high speeds of the engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.