Methods and systems for reducing catalyst cooling during fuel cut via pre-chamber ignition system
US11352968B1 · kind B1 · utility
3Cited by
25References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2021 |
| Grant date | Jun 7, 2022 |
| Priority date | — |
| Expiry date | Jun 29, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Methods and systems are provided for transferring hot, compressed gases from one cylinder to another cylinder while fuel injection in both cylinders is deactivated. In one example, a method may include during a fuel shut-off event, opening a first pre-chamber injector of the first cylinder undergoing late compression or early expansion and opening a second pre-chamber injector of the second cylinder undergoing a late expansion and/or exhaust stroke or undergoing an intake stroke to allow a hot, compressed gas from the first cylinder to transfer to the second cylinder through the first and second pre-chamber injectors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.