Internal combustion engine
US12146450B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 29, 2022 |
| Grant date | Nov 19, 2024 |
| Priority date | — |
| Expiry date | Jul 24, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A control apparatus for an internal combustion engine carries out lean combustion to cause flame propagation to a homogeneous air-fuel mixture while drifting primary flames on a tumble flow by injecting fuel for ignition from a second fuel injection valve to a vicinity of an electrode portion and igniting an air-fuel mixture for ignition at a primary ignition timing, and to ignite an air-fuel mixture for accelerating combustion at a secondary ignition timing by injecting fuel for accelerating combustion in a squish area from the second fuel injection valve at a timing before an injection timing of the fuel for ignition and drifting the air-fuel mixture for accelerating combustion in a combustion chamber on the tumble flow. The secondary ignition timing is set as a timing allowing secondary flames produced by igniting the air-fuel mixture for accelerating combustion to be drawn into the squish area by a reverse squish flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.