Methods and system for central fuel injection
US10167806B2 · kind B2 · utility
5Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 3, 2017 |
| Grant date | Jan 1, 2019 |
| Priority date | — |
| Expiry date | Jul 21, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Methods and systems are provided for adjusting engine operating conditions for reduction of NOx emissions. In one example, immediately after a fuel shut-off event, in response to an oxygen content of an exhaust catalyst being higher than a threshold, manifold charge cooling may be increased by increasing the portion of fuel delivered to the engine via manifold injection relative to the portion to fuel delivered via one or more of port and direct injection. By increasing manifold cooling, NOx production may be reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.