Spark advance modifier based on a fuel modifier
US6003494A · kind A · utility
2Cited by
10References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1998 |
| Grant date | Dec 21, 1999 |
| Priority date | — |
| Expiry date | Aug 31, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method is provided for controlling spark advance based on a fuel modifier. Initially, engine fueling is reduced according to a known dynamic crankshaft fuel control (DCFC) methodology. As a result, the engine tends to run rougher. In response, spark advance is varied based on the overall fuel multiplier reduction from the DCFC methodology. For instance, a look-up table, or mathematical function based on the DCFC multiplier can be utilized as the basis for the spark advance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.