Post fuel injection of gaseous fuel to reduce exhaust emissions
US9382857B2 · kind B2 · utility
21Cited by
2References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2013 |
| Grant date | Jul 5, 2016 |
| Priority date | — |
| Expiry date | Jul 4, 2034 |
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 delivering gaseous fuel as multiple fuel injections split between an intake stroke, a compression stroke, and/or a power stroke to expedite exhaust catalyst heating during an engine cold-start. Fuel injected in the intake and compression stroke is ignited and combusted. The power stroke fuel injections are combusted in the exhaust port to increase exhaust temperature and pressure for faster catalyst light-off.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.