Ignition device for an internal combustion engine
US6705302B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 17, 2001 |
| Grant date | Mar 16, 2004 |
| Priority date | — |
| Expiry date | Apr 1, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2400/16
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An ignition device for an internal combustion engine having multiple cylinders and direct gasoline injection is described, so that the secondary current conduction time of the ignition coil can be prolonged controllably without increasing the primary current. At least one ignition coil is provided for each cylinder of the internal combustion engine. The primary side of the ignition coil is switched over an ignition switch which is triggered by a microprocessor. A spark plug is connected to the secondary side of the ignition coil. An external voltage can be applied to the ignition coil to prolong the secondary current conduction time, thus supplying the power required for the prolonged secondary current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.