Spark timing control method and device
US4256072A · kind A · utility
6Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 21, 1978 |
| Grant date | Mar 17, 1981 |
| Priority date | — |
| Expiry date | Jul 21, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An optimum spark timing angle, i.e. spark advance or spark advance angle, is computed for an automobile internal combustion engine by a computing unit on the basis of at least two operational parameters of an engine. An intake manifold vacuum signal during an intake stroke of one cylinder of the engine is stored or delayed a given time, and then an intake manifold vacuum signal and a rotational speed signal of the engine are delivered to a computing unit which computes a spark advance for the specific cylinder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.