Ignition device for internal combustion engine
US11098689B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2019 |
| Grant date | Aug 24, 2021 |
| Priority date | — |
| Expiry date | Jan 11, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02P9/002
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
It is made possible to control ignition appropriately.An ignition device 1 for an internal combustion engine includes a spark coil 50 including: a primary side coil 51 connected to a direct current power supply 40 and a secondary side coil 52 magnetically connected to the primary side coil 51 and connected to an ignition plug 60; a switch element 30 that performs switching between energization and interruption of primary current I1 to the primary side coil 51; and a switch element controlling circuit 20 that controls the switch element 30 on the basis of an ignition controlling signal 51 supplied from an ECU 10. A turn-on delay adjustment circuit 22 that delays a control timing of the switch element 30 is disposed between the ECU 10 and the switch element 30 such that first resonance noise generated due to interruption of the primary current I1 to the primary side coil 51 is reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.