System and method for controlling an ignition timing for an internal combustion engine
US4848299A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1988 |
| Grant date | Jul 18, 1989 |
| Priority date | — |
| Expiry date | Apr 19, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A system and method for controlling an ignition timing for an internal combustion engine, in which a basic ignition timing angle determined according to an engine operating condition is corrected according to an MBT (Minimum Spark Angle for Best Torque) correction quantity within a range of a predetermined limited value set for the MBT correction quantity, and the ignition timing angle is corrected within the predetermined limit range on the basis of one of knock correction quantity (calculated for suppressing the knock correction quantity to fall in a predetermined level) and the MBT correction quantity (calculated for correcting the instantaneous ignition timing angle so that a maximum internal cylinder pressure coincides with a target angular position at which a magnitude of engine output torque becomes maximum) which is placed at a more retardation angle side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.