Apparatus and a method for controlling the ignition timing of a cylinder-injection internal combustion engine
US5909723A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 1997 |
| Grant date | Jun 8, 1999 |
| Priority date | — |
| Expiry date | Nov 10, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An apparatus for controlling an ignition timing of a cylinder-injection gasoline engine includes an electronic control unit (ECU) for controlling the operation of an ignition coil. The ECU advances the ignition timing in accordance with the throttle opening in consideration of a delay in increase of the wall temperature of a combustion chamber when the acceleration of a vehicle is detected by the change of the throttle opening. In order to prevent knocking of the engine attributable to the increase of the wall temperature, the ECU gradually decreases an advance angle for the ignition timing to 0 with the passage of control time. When the engine is reaccelerated during the advance angle correction, the ECU newly sets an advance angle for the ignition timing and a control time, corresponding to the increase of the wall temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.