Ignition control system for internal combustion engine
US9869288B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 29, 2016 |
| Grant date | Jan 16, 2018 |
| Priority date | — |
| Expiry date | Mar 29, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An ECU outputs an ignition signal Si to an ignition apparatus through an ignition communication line. The ignition apparatus performs the closing operation of an ignition switching element, in a period during which the ignition signal Si is input. The ECU outputs a discharge waveform control signal Sc to a waveform control communication line, at a timing that is delayed by a predetermined delay time relative to an output timing of the ignition signal Si. In an input period of the discharge waveform control signal Sc after the stop of the input of the ignition signal Si, the ignition apparatus controls the electric current to flow through a primary coil, to a discharge current command value that is decided depending on the above delay time, by the opening-closing operation of a control switching element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.