Apparatus and a method for controlling an engine
US6879905B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2002 |
| Grant date | Apr 12, 2005 |
| Priority date | — |
| Expiry date | Dec 27, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02N2200/063
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Engine cranking control is ended when it is detected that the battery voltage for driving the starter is lowered to at least as low as a starter drive judgment value and thereafter, returns to at least a starter stop judgment value during the engine cranking control that is started on condition that an engine is rotating. A start for driving a starter and a stop of driving the starter can be distinguished based on battery voltage where the battery voltage recovers due to a rapid reduction of consuming current and a rapid increase of a generating current when a driver recognizes an engine combustion completion and stops a starter driving. As a result, on increase of an engine friction, the cranking control is accurately ended, preventing deterioration of a fuel economy and excess exhaust gas emission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.